Update to 1.16.200

connector/pom.xml

@@ -30,9 +30,9 @@
             <scope>compile</scope>
         </dependency>
         <dependency>
-            <groupId>com.github.CloudburstMC.Protocol</groupId>
-            <artifactId>bedrock-v419</artifactId>
-            <version>ce59d39118</version>
+            <groupId>com.nukkitx.protocol</groupId>
+            <artifactId>bedrock-v422</artifactId>
+            <version>2.6.0-SNAPSHOT</version>
             <scope>compile</scope>
             <exclusions>
                 <exclusion>

connector/src/main/java/org/geysermc/connector/entity/Entity.java

@@ -50,6 +50,7 @@ import org.geysermc.connector.entity.attribute.AttributeType;
 import org.geysermc.connector.entity.living.ArmorStandEntity;
 import org.geysermc.connector.entity.player.PlayerEntity;
 import org.geysermc.connector.entity.type.EntityType;
+import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.item.ItemRegistry;
 import org.geysermc.connector.utils.AttributeUtils;
@@ -284,11 +285,12 @@ public class Entity {
 
                     // Shield code
                     if (session.getPlayerEntity().getEntityId() == entityId && metadata.getFlags().getFlag(EntityFlag.SNEAKING)) {
-                        if ((session.getInventory().getItemInHand() != null && session.getInventory().getItemInHand().getId() == ItemRegistry.SHIELD.getJavaId()) ||
-                                (session.getInventoryCache().getPlayerInventory().getItem(45) != null && session.getInventoryCache().getPlayerInventory().getItem(45).getId() == ItemRegistry.SHIELD.getJavaId())) {
+                        PlayerInventory playerInv = session.getPlayerInventory();
+                        if ((playerInv.getItemInHand().getId() == ItemRegistry.SHIELD.getJavaId()) ||
+                                (playerInv.getOffhand().getId() == ItemRegistry.SHIELD.getJavaId())) {
                             ClientPlayerUseItemPacket useItemPacket;
                             metadata.getFlags().setFlag(EntityFlag.BLOCKING, true);
-                            if (session.getInventory().getItemInHand() != null && session.getInventory().getItemInHand().getId() == ItemRegistry.SHIELD.getJavaId()) {
+                            if (playerInv.getItemInHand().getId() == ItemRegistry.SHIELD.getJavaId()) {
                                 useItemPacket = new ClientPlayerUseItemPacket(Hand.MAIN_HAND);
                             }
                             // Else we just assume it's the offhand, to simplify logic and to assure the packet gets sent

connector/src/main/java/org/geysermc/connector/inventory/Container.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.connector.inventory;
+
+import com.github.steveice10.mc.protocol.data.game.window.WindowType;
+import lombok.Getter;
+import lombok.NonNull;
+import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
+
+/**
+ * Combination of {@link Inventory} and {@link PlayerInventory}
+ */
+@Getter
+public class Container extends Inventory {
+    private final PlayerInventory playerInventory;
+    private final int containerSize;
+
+    public Container(String title, int id, WindowType windowType, int size, PlayerInventory playerInventory) {
+        super(title, id, windowType, size);
+        this.playerInventory = playerInventory;
+        this.containerSize = this.size + InventoryTranslator.PLAYER_INVENTORY_SIZE;
+    }
+
+    @Override
+    public GeyserItemStack getItem(int slot) {
+        if (slot < this.size) {
+            return super.getItem(slot);
+        } else {
+            return playerInventory.getItem(slot - this.size + InventoryTranslator.PLAYER_INVENTORY_OFFSET);
+        }
+    }
+
+    @Override
+    public void setItem(int slot, @NonNull GeyserItemStack item) {
+        if (slot < this.size) {
+            super.setItem(slot, item);
+        } else {
+            playerInventory.setItem(slot - this.size + InventoryTranslator.PLAYER_INVENTORY_OFFSET, item);
+        }
+    }
+
+    @Override
+    public int getSize() {
+        return this.containerSize;
+    }
+}

connector/src/main/java/org/geysermc/connector/inventory/EnchantmentInventory.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ *  THE SOFTWARE.
+ *
+ *  @author GeyserMC
+ *  @link https://github.com/GeyserMC/Geyser
+ *
+ */
+
+package org.geysermc.connector.inventory;
+
+import com.github.steveice10.mc.protocol.data.game.window.WindowType;
+import com.nukkitx.protocol.bedrock.data.inventory.EnchantOptionData;
+import lombok.Getter;
+
+@Getter
+public class EnchantmentInventory extends Inventory {
+    private EnchantOptionData[] enchantOptions;
+
+    public EnchantmentInventory(String title, int id, WindowType windowType, int size) {
+        super(title, id, windowType, size);
+    }
+}

connector/src/main/java/org/geysermc/connector/inventory/FurnaceInventory.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ *  THE SOFTWARE.
+ *
+ *  @author GeyserMC
+ *  @link https://github.com/GeyserMC/Geyser
+ *
+ */
+
+package org.geysermc.connector.inventory;
+
+import com.github.steveice10.mc.protocol.data.game.window.WindowType;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+public class FurnaceInventory extends Inventory {
+    @Setter
+    private int test;
+
+    public FurnaceInventory(String title, int id, WindowType windowType, int size) {
+        super(title, id, windowType, size);
+    }
+}

connector/src/main/java/org/geysermc/connector/inventory/GeyserItemStack.java

@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ *  THE SOFTWARE.
+ *
+ *  @author GeyserMC
+ *  @link https://github.com/GeyserMC/Geyser
+ *
+ */
+
+package org.geysermc.connector.inventory;
+
+import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.nukkitx.protocol.bedrock.data.inventory.ItemData;
+import lombok.Data;
+import org.geysermc.connector.network.session.GeyserSession;
+import org.geysermc.connector.network.translators.item.ItemEntry;
+import org.geysermc.connector.network.translators.item.ItemRegistry;
+import org.geysermc.connector.network.translators.item.ItemTranslator;
+
+@Data
+public class GeyserItemStack {
+    public static final GeyserItemStack EMPTY = new GeyserItemStack(0, 0, null);
+
+    private final int id;
+    private int amount;
+    private CompoundTag nbt;
+    private int netId;
+
+    public GeyserItemStack(int id) {
+        this(id, 1);
+    }
+
+    public GeyserItemStack(int id, int amount) {
+        this(id, amount, null);
+    }
+
+    public GeyserItemStack(int id, int amount, CompoundTag nbt) {
+        this(id, amount, nbt, 1);
+    }
+
+    public GeyserItemStack(int id, int amount, CompoundTag nbt, int netId) {
+        this.id = id;
+        this.amount = amount;
+        this.nbt = nbt;
+        this.netId = netId;
+    }
+
+    public int getId() {
+        return isEmpty() ? 0 : id;
+    }
+
+    public int getAmount() {
+        return isEmpty() ? 0 : amount;
+    }
+
+    public CompoundTag getNbt() {
+        return isEmpty() ? null : nbt;
+    }
+
+    public int getNetId() {
+        return isEmpty() ? 0 : netId;
+    }
+
+    public void add(int add) {
+        amount += add;
+    }
+
+    public void sub(int sub) {
+        amount -= sub;
+    }
+
+    public static GeyserItemStack from(ItemStack itemStack) {
+        return from(itemStack, 1);
+    }
+
+    public static GeyserItemStack from(ItemStack itemStack, int netId) {
+        return itemStack == null ? EMPTY : new GeyserItemStack(itemStack.getId(), itemStack.getAmount(), itemStack.getNbt(), netId);
+    }
+
+    public ItemStack getItemStack() {
+        return isEmpty() ? null : new ItemStack(id, amount, nbt);
+    }
+
+    public ItemData getItemData(GeyserSession session) {
+        ItemData itemData = ItemTranslator.translateToBedrock(session, getItemStack());
+        itemData.setNetId(getNetId());
+        return itemData;
+    }
+
+    public ItemEntry getItemEntry() {
+        return ItemRegistry.ITEM_ENTRIES.get(getId());
+    }
+
+    public boolean isEmpty() {
+        return amount <= 0 || id == 0;
+    }
+
+    public GeyserItemStack copy() {
+        return copy(amount);
+    }
+
+    public GeyserItemStack copy(int newAmount) {
+        return isEmpty() ? EMPTY : new GeyserItemStack(id, newAmount, nbt == null ? null : nbt.clone(), netId);
+    }
+}

connector/src/main/java/org/geysermc/connector/inventory/Inventory.java

@@ -25,23 +25,19 @@
 
 package org.geysermc.connector.inventory;
 
-import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
 import com.github.steveice10.mc.protocol.data.game.window.WindowType;
 import com.nukkitx.math.vector.Vector3i;
 import lombok.Getter;
+import lombok.NonNull;
 import lombok.Setter;
 
-import java.util.concurrent.atomic.AtomicInteger;
+import java.util.Arrays;
 
 public class Inventory {
 
     @Getter
     protected int id;
 
-    @Getter
-    @Setter
-    protected boolean open;
-
     @Getter
     protected WindowType windowType;
 
@@ -52,8 +48,7 @@ public class Inventory {
     @Setter
     protected String title;
 
-    @Setter
-    protected ItemStack[] items;
+    protected GeyserItemStack[] items;
 
     @Getter
     @Setter
@@ -64,27 +59,30 @@ public class Inventory {
     protected long holderId = -1;
 
     @Getter
-    protected AtomicInteger transactionId = new AtomicInteger(1);
+    protected short transactionId = 0;
 
-    public Inventory(int id, WindowType windowType, int size) {
+    protected Inventory(int id, WindowType windowType, int size) {
         this("Inventory", id, windowType, size);
     }
 
-    public Inventory(String title, int id, WindowType windowType, int size) {
+    protected Inventory(String title, int id, WindowType windowType, int size) {
         this.title = title;
         this.id = id;
         this.windowType = windowType;
         this.size = size;
-        this.items = new ItemStack[size];
+        this.items = new GeyserItemStack[size];
+        Arrays.fill(items, GeyserItemStack.EMPTY);
     }
 
-    public ItemStack getItem(int slot) {
+    public GeyserItemStack getItem(int slot) {
         return items[slot];
     }
 
-    public void setItem(int slot, ItemStack item) {
-        if (item != null && (item.getId() == 0 || item.getAmount() < 1))
-            item = null;
+    public void setItem(int slot, @NonNull GeyserItemStack item) {
         items[slot] = item;
     }
+
+    public short getNextTransactionId() {
+        return ++transactionId;
+    }
 }

connector/src/main/java/org/geysermc/connector/inventory/MerchantContainer.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ *  THE SOFTWARE.
+ *
+ *  @author GeyserMC
+ *  @link https://github.com/GeyserMC/Geyser
+ *
+ */
+
+package org.geysermc.connector.inventory;
+
+import com.github.steveice10.mc.protocol.data.game.window.VillagerTrade;
+import com.github.steveice10.mc.protocol.data.game.window.WindowType;
+import lombok.Getter;
+import lombok.Setter;
+import org.geysermc.connector.entity.Entity;
+
+@Getter
+@Setter
+public class MerchantContainer extends Container {
+    private Entity villager;
+    private VillagerTrade[] villagerTrades;
+
+    public MerchantContainer(String title, int id, WindowType windowType, int size, PlayerInventory playerInventory) {
+        super(title, id, windowType, size, playerInventory);
+    }
+}

connector/src/main/java/org/geysermc/connector/inventory/PlayerInventory.java

@@ -25,8 +25,8 @@
 
 package org.geysermc.connector.inventory;
 
-import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
 import lombok.Getter;
+import lombok.NonNull;
 import lombok.Setter;
 
 public class PlayerInventory extends Inventory {
@@ -40,20 +40,24 @@ public class PlayerInventory extends Inventory {
     private int heldItemSlot;
 
     @Getter
-    private ItemStack cursor;
+    @Setter
+    @NonNull
+    private GeyserItemStack cursor = GeyserItemStack.EMPTY;
 
     public PlayerInventory() {
         super(0, null, 46);
         heldItemSlot = 0;
     }
 
-    public void setCursor(ItemStack stack) {
-        if (stack != null && (stack.getId() == 0 || stack.getAmount() < 1))
-            stack = null;
-        cursor = stack;
-    }
-
-    public ItemStack getItemInHand() {
+    public GeyserItemStack getItemInHand() {
         return items[36 + heldItemSlot];
     }
+
+    public void setItemInHand(@NonNull GeyserItemStack item) {
+        items[36 + heldItemSlot] = item;
+    }
+
+    public GeyserItemStack getOffhand() {
+        return items[45];
+    }
 }

connector/src/main/java/org/geysermc/connector/network/BedrockProtocol.java

@@ -27,6 +27,7 @@ package org.geysermc.connector.network;
 
 import com.nukkitx.protocol.bedrock.BedrockPacketCodec;
 import com.nukkitx.protocol.bedrock.v419.Bedrock_v419;
+import com.nukkitx.protocol.bedrock.v422.Bedrock_v422;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -39,22 +40,18 @@ public class BedrockProtocol {
      * Default Bedrock codec that should act as a fallback. Should represent the latest available
      * release of the game that Geyser supports.
      */
-    public static final BedrockPacketCodec DEFAULT_BEDROCK_CODEC = Bedrock_v419.V419_CODEC;
+    public static final BedrockPacketCodec DEFAULT_BEDROCK_CODEC = Bedrock_v422.V422_CODEC;
     /**
      * A list of all supported Bedrock versions that can join Geyser
      */
     public static final List<BedrockPacketCodec> SUPPORTED_BEDROCK_CODECS = new ArrayList<>();
 
     static {
-        SUPPORTED_BEDROCK_CODECS.add(DEFAULT_BEDROCK_CODEC.toBuilder()
+        SUPPORTED_BEDROCK_CODECS.add(Bedrock_v419.V419_CODEC.toBuilder()
                 .minecraftVersion("1.16.100/1.16.101") // We change this as 1.16.100.60 (beta) crashes with Geyser
                 .build()
         );
-        SUPPORTED_BEDROCK_CODECS.add(DEFAULT_BEDROCK_CODEC.toBuilder()
-                .protocolVersion(422)
-                .minecraftVersion("1.16.200.56")
-                .build()
-        );
+        SUPPORTED_BEDROCK_CODECS.add(DEFAULT_BEDROCK_CODEC);
     }
 
     /**

connector/src/main/java/org/geysermc/connector/network/UpstreamPacketHandler.java

@@ -82,7 +82,9 @@ public class UpstreamPacketHandler extends LoggingPacketHandler {
         ResourcePacksInfoPacket resourcePacksInfo = new ResourcePacksInfoPacket();
         for(ResourcePack resourcePack : ResourcePack.PACKS.values()) {
             ResourcePackManifest.Header header = resourcePack.getManifest().getHeader();
-            resourcePacksInfo.getResourcePackInfos().add(new ResourcePacksInfoPacket.Entry(header.getUuid().toString(), header.getVersionString(), resourcePack.getFile().length(), "", "", "", false));
+            resourcePacksInfo.getResourcePackInfos().add(new ResourcePacksInfoPacket.Entry(
+                    header.getUuid().toString(), header.getVersionString(), resourcePack.getFile().length(),
+                    "", "", "", false, false));
         }
         resourcePacksInfo.setForcedToAccept(GeyserConnector.getInstance().getConfig().isForceResourcePacks());
         session.sendUpstreamPacket(resourcePacksInfo);

connector/src/main/java/org/geysermc/connector/network/session/GeyserSession.java

@@ -33,6 +33,7 @@ import com.github.steveice10.mc.protocol.MinecraftProtocol;
 import com.github.steveice10.mc.protocol.data.SubProtocol;
 import com.github.steveice10.mc.protocol.data.game.entity.player.GameMode;
 import com.github.steveice10.mc.protocol.data.game.statistic.Statistic;
+import com.github.steveice10.mc.protocol.data.game.recipe.Recipe;
 import com.github.steveice10.mc.protocol.data.game.window.VillagerTrade;
 import com.github.steveice10.mc.protocol.packet.handshake.client.HandshakePacket;
 import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlayerPositionRotationPacket;
@@ -58,6 +59,7 @@ import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.objects.Object2LongMap;
 import it.unimi.dsi.fastutil.objects.Object2LongOpenHashMap;
 import it.unimi.dsi.fastutil.objects.ObjectIterator;
+import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NonNull;
 import lombok.Setter;
@@ -69,6 +71,7 @@ import org.geysermc.connector.common.AuthType;
 import org.geysermc.connector.entity.Entity;
 import org.geysermc.connector.entity.player.SkullPlayerEntity;
 import org.geysermc.connector.entity.player.SessionPlayerEntity;
+import org.geysermc.connector.inventory.Inventory;
 import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.translators.chat.MessageTranslator;
 import org.geysermc.connector.network.remote.RemoteServer;
@@ -79,7 +82,6 @@ import org.geysermc.connector.network.translators.BiomeTranslator;
 import org.geysermc.connector.network.translators.EntityIdentifierRegistry;
 import org.geysermc.connector.network.translators.PacketTranslatorRegistry;
 import org.geysermc.connector.network.translators.collision.CollisionManager;
-import org.geysermc.connector.network.translators.inventory.EnchantmentInventoryTranslator;
 import org.geysermc.connector.network.translators.item.ItemRegistry;
 import org.geysermc.connector.skin.SkinManager;
 import org.geysermc.connector.utils.*;
@@ -91,6 +93,12 @@ import java.net.InetSocketAddress;
 import java.security.NoSuchAlgorithmException;
 import java.security.PublicKey;
 import java.security.spec.InvalidKeySpecException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
+import java.util.concurrent.TimeUnit;
 import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ScheduledFuture;
@@ -109,16 +117,25 @@ public class GeyserSession implements CommandSender {
     private BedrockClientData clientData;
 
     private final SessionPlayerEntity playerEntity;
-    private PlayerInventory inventory;
 
     private ChunkCache chunkCache;
     private EntityCache entityCache;
     private EntityEffectCache effectCache;
-    private InventoryCache inventoryCache;
     private WorldCache worldCache;
     private WindowCache windowCache;
     private final Int2ObjectMap<TeleportCache> teleportMap = new Int2ObjectOpenHashMap<>();
 
+    private final PlayerInventory playerInventory;
+    @Setter
+    private Inventory openInventory;
+
+    private final AtomicInteger itemNetId = new AtomicInteger(1);
+
+    @Getter(AccessLevel.NONE)
+    private final Object inventoryLock = new Object();
+    @Getter(AccessLevel.NONE)
+    private CompletableFuture<Void> inventoryFuture;
+
     /**
      * Stores session collision
      */
@@ -190,9 +207,6 @@ public class GeyserSession implements CommandSender {
     @Setter
     private Entity ridingVehicleEntity;
 
-    @Setter
-    private int craftSlot = 0;
-
     @Setter
     private long lastWindowCloseTime = 0;
 
@@ -207,10 +221,8 @@ public class GeyserSession implements CommandSender {
     @Setter
     private long lastInteractedVillagerEid;
 
-    /**
-     * Stores the enchantment information the client has received if they are in an enchantment table GUI
-     */
-    private final EnchantmentInventoryTranslator.EnchantmentSlotData[] enchantmentSlotData = new EnchantmentInventoryTranslator.EnchantmentSlotData[3];
+    @Setter
+    private Int2ObjectMap<Recipe> craftingRecipes;
 
     /**
      * The current attack speed of the player. Used for sending proper cooldown timings.
@@ -326,20 +338,23 @@ public class GeyserSession implements CommandSender {
         this.chunkCache = new ChunkCache(this);
         this.entityCache = new EntityCache(this);
         this.effectCache = new EntityEffectCache();
-        this.inventoryCache = new InventoryCache(this);
         this.worldCache = new WorldCache(this);
         this.windowCache = new WindowCache(this);
 
         this.collisionManager = new CollisionManager(this);
 
         this.playerEntity = new SessionPlayerEntity(this);
-        this.inventory = new PlayerInventory();
+        this.worldCache = new WorldCache(this);
+        this.windowCache = new WindowCache(this);
+
+        this.playerInventory = new PlayerInventory();
+        this.openInventory = null;
+        this.inventoryFuture = CompletableFuture.completedFuture(null);
+        this.craftingRecipes = new Int2ObjectOpenHashMap<>();
 
         this.spawned = false;
         this.loggedIn = false;
 
-        this.inventoryCache.getInventories().put(0, inventory);
-
         connector.getPlayers().forEach(player -> this.emotes.addAll(player.getEmotes()));
 
         bedrockServerSession.addDisconnectHandler(disconnectReason -> {
@@ -578,7 +593,6 @@ public class GeyserSession implements CommandSender {
         this.entityCache = null;
         this.effectCache = null;
         this.worldCache = null;
-        this.inventoryCache = null;
         this.windowCache = null;
 
         closed = true;
@@ -697,10 +711,47 @@ public class GeyserSession implements CommandSender {
         startGamePacket.setMultiplayerCorrelationId("");
         startGamePacket.setItemEntries(ItemRegistry.ITEMS);
         startGamePacket.setVanillaVersion("*");
+        // startGamePacket.setMovementServerAuthoritative(true);
+        startGamePacket.setInventoriesServerAuthoritative(true);
         startGamePacket.setAuthoritativeMovementMode(AuthoritativeMovementMode.CLIENT);
         upstream.sendPacket(startGamePacket);
     }
 
+    /**
+     * Adds a new inventory task.
+     * Inventory tasks are executed one at a time, in order.
+     *
+     * @param task the task to run
+     */
+    public void addInventoryTask(Runnable task) {
+        synchronized (inventoryLock) {
+            System.out.println("new task " + task.toString());
+            inventoryFuture = inventoryFuture.thenRun(task).exceptionally(throwable -> {
+                GeyserConnector.getInstance().getLogger().error("Error processing inventory task", throwable.getCause());
+                return null;
+            });
+        }
+    }
+
+    /**
+     * Adds a new inventory task with a delay.
+     * The delay is achieved by scheduling with the Geyser general thread pool.
+     * Inventory tasks are executed one at a time, in order.
+     *
+     * @param task the delayed task to run
+     * @param delayMillis delay in milliseconds
+     */
+    public void addInventoryTask(Runnable task, long delayMillis) {
+        synchronized (inventoryLock) {
+            System.out.println("new delayed task " + task.toString());
+            Executor delayedExecutor = command -> GeyserConnector.getInstance().getGeneralThreadPool().schedule(command, delayMillis, TimeUnit.MILLISECONDS);
+            inventoryFuture = inventoryFuture.thenRunAsync(task, delayedExecutor).exceptionally(throwable -> {
+                GeyserConnector.getInstance().getLogger().error("Error processing inventory task", throwable.getCause());
+                return null;
+            });
+        }
+    }
+
     public void addTeleport(TeleportCache teleportCache) {
         teleportMap.put(teleportCache.getTeleportConfirmId(), teleportCache);
 

connector/src/main/java/org/geysermc/connector/network/session/cache/InventoryCache.java

@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.session.cache;
-
-import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
-import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
-import lombok.Getter;
-import lombok.Setter;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.network.session.GeyserSession;
-
-public class InventoryCache {
-
-    private GeyserSession session;
-
-    @Getter
-    @Setter
-    private Inventory openInventory;
-
-    @Getter
-    private Int2ObjectMap<Inventory> inventories = new Int2ObjectOpenHashMap<>();
-
-    public InventoryCache(GeyserSession session) {
-        this.session = session;
-    }
-
-    public Inventory getPlayerInventory() {
-        return inventories.get(0);
-    }
-
-    public void cacheInventory(Inventory inventory) {
-        inventories.put(inventory.getId(), inventory);
-    }
-
-    public void uncacheInventory(int id) {
-        inventories.remove(id);
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockContainerCloseTranslator.java

@@ -38,18 +38,17 @@ public class BedrockContainerCloseTranslator extends PacketTranslator<ContainerC
 
     @Override
     public void translate(ContainerClosePacket packet, GeyserSession session) {
+        session.addInventoryTask(() -> {
             session.setLastWindowCloseTime(0);
             byte windowId = packet.getId();
-        Inventory openInventory = session.getInventoryCache().getOpenInventory();
-        if (windowId == -1) { //player inventory or crafting table
-            if (openInventory != null) {
-                windowId = (byte) openInventory.getId();
-            } else {
-                windowId = 0;
-            }
+
+            if (windowId == -1 && session.getOpenInventory() != null) {
+                windowId = (byte) session.getOpenInventory().getId();
             }
 
-        if (windowId == 0 || (openInventory != null && openInventory.getId() == windowId)) {
+            Inventory openInventory = session.getOpenInventory();
+            if (openInventory != null && windowId == openInventory.getId()) {
+                System.out.println(packet);
                 ClientCloseWindowPacket closeWindowPacket = new ClientCloseWindowPacket(windowId);
                 session.getDownstream().getSession().send(closeWindowPacket);
                 InventoryUtils.closeInventory(session, windowId);
@@ -57,5 +56,6 @@ public class BedrockContainerCloseTranslator extends PacketTranslator<ContainerC
 
             //Client wants close confirmation
             session.sendUpstreamPacket(packet);
+        });
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockInventoryTransactionTranslator.java

@@ -25,7 +25,6 @@
 
 package org.geysermc.connector.network.translators.bedrock;
 
-import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
 import com.github.steveice10.mc.protocol.data.game.entity.metadata.Position;
 import com.github.steveice10.mc.protocol.data.game.entity.player.GameMode;
 import com.github.steveice10.mc.protocol.data.game.entity.player.Hand;
@@ -43,6 +42,8 @@ import com.nukkitx.protocol.bedrock.data.inventory.ContainerId;
 import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
 import com.nukkitx.protocol.bedrock.packet.ContainerOpenPacket;
 import com.nukkitx.protocol.bedrock.packet.InventorySlotPacket;
+import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
+import com.nukkitx.protocol.bedrock.data.inventory.InventorySource;
 import com.nukkitx.protocol.bedrock.packet.InventoryTransactionPacket;
 import com.nukkitx.protocol.bedrock.packet.LevelEventPacket;
 import org.geysermc.connector.entity.CommandBlockMinecartEntity;
@@ -50,17 +51,15 @@ import org.geysermc.connector.entity.Entity;
 import org.geysermc.connector.entity.ItemFrameEntity;
 import org.geysermc.connector.entity.living.merchant.AbstractMerchantEntity;
 import org.geysermc.connector.entity.type.EntityType;
-import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
 import org.geysermc.connector.network.translators.Translator;
-import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
 import org.geysermc.connector.network.translators.item.ItemEntry;
 import org.geysermc.connector.network.translators.item.ItemRegistry;
 import org.geysermc.connector.network.translators.sound.EntitySoundInteractionHandler;
 import org.geysermc.connector.network.translators.world.block.BlockTranslator;
 import org.geysermc.connector.utils.BlockUtils;
-import org.geysermc.connector.utils.InventoryUtils;
 
 import java.util.concurrent.TimeUnit;
 
@@ -71,15 +70,36 @@ public class BedrockInventoryTransactionTranslator extends PacketTranslator<Inve
     public void translate(InventoryTransactionPacket packet, GeyserSession session) {
         switch (packet.getTransactionType()) {
             case NORMAL:
-                Inventory inventory = session.getInventoryCache().getOpenInventory();
-                if (inventory == null) inventory = session.getInventory();
-                InventoryTranslator.INVENTORY_TRANSLATORS.get(inventory.getWindowType()).translateActions(session, inventory, packet.getActions());
+                System.out.println(packet);
+                if (packet.getActions().size() == 2) {
+                    InventoryActionData worldAction = packet.getActions().get(0);
+                    InventoryActionData containerAction = packet.getActions().get(1);
+                    if (worldAction.getSource().getType() == InventorySource.Type.WORLD_INTERACTION
+                            && worldAction.getSource().getFlag() == InventorySource.Flag.DROP_ITEM) {
+                        session.addInventoryTask(() -> {
+                            if (session.getPlayerInventory().getHeldItemSlot() != containerAction.getSlot())
+                                return;
+                            if (session.getPlayerInventory().getItemInHand().isEmpty())
+                                return;
+
+                            boolean dropAll = worldAction.getToItem().getCount() > 1;
+                            ClientPlayerActionPacket dropAllPacket = new ClientPlayerActionPacket(
+                                    dropAll ? PlayerAction.DROP_ITEM_STACK : PlayerAction.DROP_ITEM,
+                                    new Position(0, 0, 0),
+                                    BlockFace.DOWN
+                            );
+                            session.sendDownstreamPacket(dropAllPacket);
+
+                            if (dropAll) {
+                                session.getPlayerInventory().setItemInHand(GeyserItemStack.EMPTY);
+                            } else {
+                                session.getPlayerInventory().getItemInHand().sub(1);
+                            }
+                        });
+                    }
+                }
                 break;
             case INVENTORY_MISMATCH:
-                Inventory inv = session.getInventoryCache().getOpenInventory();
-                if (inv == null) inv = session.getInventory();
-                InventoryTranslator.INVENTORY_TRANSLATORS.get(inv.getWindowType()).updateInventory(session, inv);
-                InventoryUtils.updateCursor(session);
                 break;
             case ITEM_USE:
                 switch (packet.getActionType()) {
@@ -165,9 +185,8 @@ public class BedrockInventoryTransactionTranslator extends PacketTranslator<Inve
                         session.setInteracting(true);
                         break;
                     case 1:
-                        ItemStack shieldSlot = session.getInventory().getItem(session.getInventory().getHeldItemSlot() + 36);
                         // Handled in Entity.java
-                        if (shieldSlot != null && shieldSlot.getId() == ItemRegistry.SHIELD.getJavaId()) {
+                        if (session.getPlayerInventory().getItemInHand().getId() == ItemRegistry.SHIELD.getJavaId()) {
                             break;
                         }
 

connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockItemStackRequestTranslator.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ *  THE SOFTWARE.
+ *
+ *  @author GeyserMC
+ *  @link https://github.com/GeyserMC/Geyser
+ *
+ */
+
+package org.geysermc.connector.network.translators.bedrock;
+
+import com.nukkitx.protocol.bedrock.packet.ItemStackRequestPacket;
+import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.network.session.GeyserSession;
+import org.geysermc.connector.network.translators.PacketTranslator;
+import org.geysermc.connector.network.translators.Translator;
+import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
+import org.geysermc.connector.utils.InventoryUtils;
+
+@Translator(packet = ItemStackRequestPacket.class)
+public class BedrockItemStackRequestTranslator extends PacketTranslator<ItemStackRequestPacket> {
+
+    @Override
+    public void translate(ItemStackRequestPacket packet, GeyserSession session) {
+        Inventory inventory = session.getOpenInventory();
+        if (inventory == null)
+            return;
+
+        InventoryTranslator translator = InventoryTranslator.INVENTORY_TRANSLATORS.get(inventory.getWindowType());
+        session.addInventoryTask(() -> translator.translateRequests(session, inventory, packet.getRequests()));
+    }
+}

connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockMobEquipmentTranslator.java

@@ -40,12 +40,12 @@ public class BedrockMobEquipmentTranslator extends PacketTranslator<MobEquipment
     @Override
     public void translate(MobEquipmentPacket packet, GeyserSession session) {
         if (!session.isSpawned() || packet.getHotbarSlot() > 8 ||
-                packet.getContainerId() != ContainerId.INVENTORY || session.getInventory().getHeldItemSlot() == packet.getHotbarSlot()) {
+                packet.getContainerId() != ContainerId.INVENTORY || session.getPlayerInventory().getHeldItemSlot() == packet.getHotbarSlot()) {
             // For the last condition - Don't update the slot if the slot is the same - not Java Edition behavior and messes with plugins such as Grief Prevention
             return;
         }
 
-        session.getInventory().setHeldItemSlot(packet.getHotbarSlot());
+        session.getPlayerInventory().setHeldItemSlot(packet.getHotbarSlot());
 
         ClientPlayerChangeHeldItemPacket changeHeldItemPacket = new ClientPlayerChangeHeldItemPacket(packet.getHotbarSlot());
         session.sendDownstreamPacket(changeHeldItemPacket);

connector/src/main/java/org/geysermc/connector/network/translators/bedrock/entity/BedrockEntityEventTranslator.java

@@ -26,12 +26,13 @@
 package org.geysermc.connector.network.translators.bedrock.entity;
 
 import com.github.steveice10.mc.protocol.data.game.window.VillagerTrade;
-import com.github.steveice10.mc.protocol.data.game.window.WindowType;
 import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientSelectTradePacket;
 import com.nukkitx.protocol.bedrock.data.entity.EntityData;
 import com.nukkitx.protocol.bedrock.packet.EntityEventPacket;
 import org.geysermc.connector.entity.Entity;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.inventory.MerchantContainer;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
 import org.geysermc.connector.network.translators.Translator;
@@ -47,20 +48,25 @@ public class BedrockEntityEventTranslator extends PacketTranslator<EntityEventPa
                 session.sendUpstreamPacket(packet);
                 return;
             case COMPLETE_TRADE:
+                session.addInventoryTask(() -> {
                     ClientSelectTradePacket selectTradePacket = new ClientSelectTradePacket(packet.getData());
                     session.sendDownstreamPacket(selectTradePacket);
+                });
 
+                session.addInventoryTask(() -> {
                     Entity villager = session.getPlayerEntity();
-                Inventory openInventory = session.getInventoryCache().getOpenInventory();
-                if (openInventory != null && openInventory.getWindowType() == WindowType.MERCHANT) {
-                    VillagerTrade[] trades = session.getVillagerTrades();
+                    Inventory openInventory = session.getOpenInventory();
+                    if (openInventory instanceof MerchantContainer) {
+                        MerchantContainer merchantInventory = (MerchantContainer) openInventory;
+                        VillagerTrade[] trades = merchantInventory.getVillagerTrades();
                         if (trades != null && packet.getData() >= 0 && packet.getData() < trades.length) {
-                        VillagerTrade trade = session.getVillagerTrades()[packet.getData()];
-                        openInventory.setItem(2, trade.getOutput());
+                            VillagerTrade trade = merchantInventory.getVillagerTrades()[packet.getData()];
+                            openInventory.setItem(2, GeyserItemStack.from(trade.getOutput()));
                             villager.getMetadata().put(EntityData.TRADE_XP, trade.getXp() + villager.getMetadata().getInt(EntityData.TRADE_XP));
                             villager.updateBedrockMetadata(session);
                         }
                     }
+                }, 100);
                 return;
         }
         session.getConnector().getLogger().debug("Did not translate incoming EntityEventPacket: " + packet.toString());

connector/src/main/java/org/geysermc/connector/network/translators/bedrock/entity/player/BedrockInteractTranslator.java

@@ -39,6 +39,7 @@ import com.nukkitx.protocol.bedrock.packet.InteractPacket;
 import lombok.Getter;
 import org.geysermc.connector.entity.Entity;
 import org.geysermc.connector.entity.type.EntityType;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
 import org.geysermc.connector.network.translators.Translator;
@@ -98,7 +99,7 @@ public class BedrockInteractTranslator extends PacketTranslator<InteractPacket>
 
         switch (packet.getAction()) {
             case INTERACT:
-                if (session.getInventory().getItem(session.getInventory().getHeldItemSlot() + 36).getId() == ItemRegistry.SHIELD.getJavaId()) {
+                if (session.getPlayerInventory().getItemInHand().getId() == ItemRegistry.SHIELD.getJavaId()) {
                     break;
                 }
                 ClientPlayerInteractEntityPacket interactPacket = new ClientPlayerInteractEntityPacket((int) entity.getEntityId(),
@@ -122,7 +123,7 @@ public class BedrockInteractTranslator extends PacketTranslator<InteractPacket>
                     if (interactEntity == null)
                         return;
                     EntityDataMap entityMetadata = interactEntity.getMetadata();
-                    ItemEntry itemEntry = session.getInventory().getItemInHand() == null ? ItemEntry.AIR : ItemRegistry.getItem(session.getInventory().getItemInHand());
+                    ItemEntry itemEntry = session.getPlayerInventory().getItemInHand() == GeyserItemStack.EMPTY ? ItemEntry.AIR : ItemRegistry.getItem(session.getPlayerInventory().getItemInHand().getItemStack());
                     String javaIdentifierStripped = itemEntry.getJavaIdentifier().replace("minecraft:", "");
 
                     // TODO - in the future, update these in the metadata? So the client doesn't have to wiggle their cursor around for it to happen
@@ -136,8 +137,8 @@ public class BedrockInteractTranslator extends PacketTranslator<InteractPacket>
                             interactEntity.getEntityType() == EntityType.PIG || interactEntity.getEntityType() == EntityType.STRIDER)) {
                         // Entity can be saddled and the conditions meet (entity can be saddled and, if needed, is tamed)
                         interactiveTag = InteractiveTag.SADDLE;
-                    } else if (javaIdentifierStripped.equals("name_tag") && session.getInventory().getItemInHand().getNbt() != null &&
-                        session.getInventory().getItemInHand().getNbt().contains("display")) {
+                    } else if (javaIdentifierStripped.equals("name_tag") && session.getPlayerInventory().getItemInHand().getNbt() != null &&
+                        session.getPlayerInventory().getItemInHand().getNbt().contains("display")) {
                         // Holding a named name tag
                         interactiveTag = InteractiveTag.NAME;
                     } else if (javaIdentifierStripped.equals("lead") && LEASHABLE_MOB_TYPES.contains(interactEntity.getEntityType()) &&
@@ -355,14 +356,15 @@ public class BedrockInteractTranslator extends PacketTranslator<InteractPacket>
                 }
                 break;
             case OPEN_INVENTORY:
-                if (!session.getInventory().isOpen()) {
+                if (session.getOpenInventory() == null) {
+                    session.setOpenInventory(session.getPlayerInventory());
+
                     ContainerOpenPacket containerOpenPacket = new ContainerOpenPacket();
                     containerOpenPacket.setId((byte) 0);
                     containerOpenPacket.setType(ContainerType.INVENTORY);
                     containerOpenPacket.setUniqueEntityId(-1);
                     containerOpenPacket.setBlockPosition(entity.getPosition().toInt());
                     session.sendUpstreamPacket(containerOpenPacket);
-                    session.getInventory().setOpen(true);
                 }
                 break;
         }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/AnvilInventoryTranslator.java

@@ -1,167 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory;
-
-import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
-import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientRenameItemPacket;
-import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
-import com.google.gson.JsonSyntaxException;
-import com.nukkitx.nbt.NbtMap;
-import com.nukkitx.protocol.bedrock.data.inventory.*;
-import net.kyori.adventure.text.Component;
-import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
-import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.updater.CursorInventoryUpdater;
-
-import java.util.List;
-import java.util.stream.Collectors;
-
-public class AnvilInventoryTranslator extends BlockInventoryTranslator {
-    public AnvilInventoryTranslator() {
-        super(3, "minecraft:anvil[facing=north]", ContainerType.ANVIL, new CursorInventoryUpdater());
-    }
-
-    @Override
-    public int bedrockSlotToJava(InventoryActionData action) {
-        if (action.getSource().getContainerId() == ContainerId.UI) {
-            switch (action.getSlot()) {
-                case 1:
-                    return 0;
-                case 2:
-                    return 1;
-                case 50:
-                    return 2;
-            }
-        }
-        if (action.getSource().getContainerId() == ContainerId.ANVIL_RESULT) {
-            return 2;
-        }
-        return super.bedrockSlotToJava(action);
-    }
-
-    @Override
-    public int javaSlotToBedrock(int slot) {
-        switch (slot) {
-            case 0:
-                return 1;
-            case 1:
-                return 2;
-            case 2:
-                return 50;
-        }
-        return super.javaSlotToBedrock(slot);
-    }
-
-    @Override
-    public SlotType getSlotType(int javaSlot) {
-        if (javaSlot == 2)
-            return SlotType.OUTPUT;
-        return SlotType.NORMAL;
-    }
-
-    @Override
-    public void translateActions(GeyserSession session, Inventory inventory, List<InventoryActionData> actions) {
-        InventoryActionData anvilResult = null;
-        InventoryActionData anvilInput = null;
-        for (InventoryActionData action : actions) {
-            if (action.getSource().getContainerId() == ContainerId.ANVIL_MATERIAL) {
-                //useless packet
-                return;
-            } else if (action.getSource().getContainerId() == ContainerId.ANVIL_RESULT) {
-                anvilResult = action;
-            } else if (bedrockSlotToJava(action) == 0) {
-                anvilInput = action;
-            }
-        }
-        ItemData itemName = null;
-        if (anvilResult != null) {
-            itemName = anvilResult.getFromItem();
-        } else if (anvilInput != null) {
-            itemName = anvilInput.getToItem();
-        }
-        if (itemName != null) {
-            String rename;
-            NbtMap tag = itemName.getTag();
-            if (tag != null && tag.containsKey("display")) {
-                String name = tag.getCompound("display").getString("Name");
-                try {
-                    Component component = GsonComponentSerializer.gson().deserialize(name);
-                    rename = LegacyComponentSerializer.legacySection().serialize(component);
-                } catch (JsonSyntaxException e) {
-                    rename = name;
-                }
-            } else {
-                rename = "";
-            }
-            ClientRenameItemPacket renameItemPacket = new ClientRenameItemPacket(rename);
-            session.sendDownstreamPacket(renameItemPacket);
-        }
-        if (anvilResult != null) {
-            //Strip unnecessary actions
-            List<InventoryActionData> strippedActions = actions.stream()
-                    .filter(action -> action.getSource().getContainerId() == ContainerId.ANVIL_RESULT
-                            || (action.getSource().getType() == InventorySource.Type.CONTAINER
-                            && !(action.getSource().getContainerId() == ContainerId.UI && action.getSlot() != 0)))
-                    .collect(Collectors.toList());
-            super.translateActions(session, inventory, strippedActions);
-            return;
-        }
-
-        super.translateActions(session, inventory, actions);
-    }
-
-    @Override
-    public void updateSlot(GeyserSession session, Inventory inventory, int slot) {
-        if (slot == 0) {
-            ItemStack item = inventory.getItem(slot);
-            if (item != null) {
-                String rename;
-                CompoundTag tag = item.getNbt();
-                if (tag != null) {
-                    CompoundTag displayTag = tag.get("display");
-                    if (displayTag != null && displayTag.contains("Name")) {
-                        String itemName = displayTag.get("Name").getValue().toString();
-                        try {
-                            Component component = GsonComponentSerializer.gson().deserialize(itemName);
-                            rename = LegacyComponentSerializer.legacySection().serialize(component);
-                        } catch (JsonSyntaxException e) {
-                            rename = itemName;
-                        }
-                    } else {
-                        rename = "";
-                    }
-                } else {
-                    rename = "";
-                }
-                ClientRenameItemPacket renameItemPacket = new ClientRenameItemPacket(rename);
-                session.sendDownstreamPacket(renameItemPacket);
-            }
-        }
-        super.updateSlot(session, inventory, slot);
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/BaseInventoryTranslator.java

@@ -25,13 +25,13 @@
 
 package org.geysermc.connector.network.translators.inventory;
 
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerId;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
+import com.github.steveice10.mc.protocol.data.game.window.WindowType;
+import com.nukkitx.protocol.bedrock.data.inventory.ContainerSlotType;
+import com.nukkitx.protocol.bedrock.data.inventory.StackRequestSlotInfoData;
+import org.geysermc.connector.inventory.Container;
 import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.action.InventoryActionDataTranslator;
-
-import java.util.List;
 
 public abstract class BaseInventoryTranslator extends InventoryTranslator {
     BaseInventoryTranslator(int size) {
@@ -44,9 +44,12 @@ public abstract class BaseInventoryTranslator extends InventoryTranslator{
     }
 
     @Override
-    public int bedrockSlotToJava(InventoryActionData action) {
-        int slotnum = action.getSlot();
-        if (action.getSource().getContainerId() == ContainerId.INVENTORY) {
+    public int bedrockSlotToJava(StackRequestSlotInfoData slotInfoData) {
+        int slotnum = slotInfoData.getSlot();
+        switch (slotInfoData.getContainer()) {
+            case HOTBAR_AND_INVENTORY:
+            case HOTBAR:
+            case INVENTORY:
                 //hotbar
                 if (slotnum >= 9) {
                     return slotnum + this.size - 9;
@@ -70,13 +73,26 @@ public abstract class BaseInventoryTranslator extends InventoryTranslator{
         return slot;
     }
 
+    @Override
+    public BedrockContainerSlot javaSlotToBedrockContainer(int slot) {
+        if (slot >= this.size) {
+            final int tmp = slot - this.size;
+            if (tmp < 27) {
+                return new BedrockContainerSlot(ContainerSlotType.INVENTORY, tmp + 9);
+            } else {
+                return new BedrockContainerSlot(ContainerSlotType.HOTBAR, tmp - 27);
+            }
+        }
+        throw new IllegalArgumentException("Unknown bedrock slot");
+    }
+
     @Override
     public SlotType getSlotType(int javaSlot) {
         return SlotType.NORMAL;
     }
 
     @Override
-    public void translateActions(GeyserSession session, Inventory inventory, List<InventoryActionData> actions) {
-        InventoryActionDataTranslator.translate(this, session, inventory, actions);
+    public Inventory createInventory(String name, int windowId, WindowType windowType, PlayerInventory playerInventory) {
+        return new Container(name, windowId, windowType, this.size, playerInventory);
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/BedrockContainerSlot.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ *  THE SOFTWARE.
+ *
+ *  @author GeyserMC
+ *  @link https://github.com/GeyserMC/Geyser
+ *
+ */
+
+package org.geysermc.connector.network.translators.inventory;
+
+import com.nukkitx.protocol.bedrock.data.inventory.ContainerSlotType;
+import lombok.Value;
+
+@Value
+public class BedrockContainerSlot {
+    ContainerSlotType container;
+    int slot;
+}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/BlockInventoryTranslator.java

@@ -1,72 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory;
-
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.world.block.BlockTranslator;
-import org.geysermc.connector.network.translators.inventory.holder.BlockInventoryHolder;
-import org.geysermc.connector.network.translators.inventory.holder.InventoryHolder;
-import org.geysermc.connector.network.translators.inventory.updater.InventoryUpdater;
-
-public class BlockInventoryTranslator extends BaseInventoryTranslator {
-    private final InventoryHolder holder;
-    private final InventoryUpdater updater;
-
-    public BlockInventoryTranslator(int size, String javaBlockIdentifier, ContainerType containerType, InventoryUpdater updater) {
-        super(size);
-        int javaBlockState = BlockTranslator.getJavaBlockState(javaBlockIdentifier);
-        int blockId = BlockTranslator.getBedrockBlockId(javaBlockState);
-        this.holder = new BlockInventoryHolder(blockId, containerType);
-        this.updater = updater;
-    }
-
-    @Override
-    public void prepareInventory(GeyserSession session, Inventory inventory) {
-        holder.prepareInventory(this, session, inventory);
-    }
-
-    @Override
-    public void openInventory(GeyserSession session, Inventory inventory) {
-        holder.openInventory(this, session, inventory);
-    }
-
-    @Override
-    public void closeInventory(GeyserSession session, Inventory inventory) {
-        holder.closeInventory(this, session, inventory);
-    }
-
-    @Override
-    public void updateInventory(GeyserSession session, Inventory inventory) {
-        updater.updateInventory(this, session, inventory);
-    }
-
-    @Override
-    public void updateSlot(GeyserSession session, Inventory inventory, int slot) {
-        updater.updateSlot(this, session, inventory, slot);
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/BrewingInventoryTranslator.java

@@ -1,99 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory;
-
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
-import com.nukkitx.protocol.bedrock.packet.ContainerSetDataPacket;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.updater.ContainerInventoryUpdater;
-
-public class BrewingInventoryTranslator extends BlockInventoryTranslator {
-    public BrewingInventoryTranslator() {
-        super(5, "minecraft:brewing_stand[has_bottle_0=false,has_bottle_1=false,has_bottle_2=false]", ContainerType.BREWING_STAND, new ContainerInventoryUpdater());
-    }
-
-    @Override
-    public void openInventory(GeyserSession session, Inventory inventory) {
-        super.openInventory(session, inventory);
-        ContainerSetDataPacket dataPacket = new ContainerSetDataPacket();
-        dataPacket.setWindowId((byte) inventory.getId());
-        dataPacket.setProperty(ContainerSetDataPacket.BREWING_STAND_FUEL_TOTAL);
-        dataPacket.setValue(20);
-        session.sendUpstreamPacket(dataPacket);
-    }
-
-    @Override
-    public void updateProperty(GeyserSession session, Inventory inventory, int key, int value) {
-        ContainerSetDataPacket dataPacket = new ContainerSetDataPacket();
-        dataPacket.setWindowId((byte) inventory.getId());
-        switch (key) {
-            case 0:
-                dataPacket.setProperty(ContainerSetDataPacket.BREWING_STAND_BREW_TIME);
-                break;
-            case 1:
-                dataPacket.setProperty(ContainerSetDataPacket.BREWING_STAND_FUEL_AMOUNT);
-                break;
-            default:
-                return;
-        }
-        dataPacket.setValue(value);
-        session.sendUpstreamPacket(dataPacket);
-    }
-
-    @Override
-    public int bedrockSlotToJava(InventoryActionData action) {
-        final int slot = super.bedrockSlotToJava(action);
-        switch (slot) {
-            case 0:
-                return 3;
-            case 1:
-                return 0;
-            case 2:
-                return 1;
-            case 3:
-                return 2;
-            default:
-                return slot;
-        }
-    }
-
-    @Override
-    public int javaSlotToBedrock(int slot) {
-        switch (slot) {
-            case 0:
-                return 1;
-            case 1:
-                return 2;
-            case 2:
-                return 3;
-            case 3:
-                return 0;
-        }
-        return super.javaSlotToBedrock(slot);
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/ChestInventoryTranslator.java

@@ -25,14 +25,11 @@
 
 package org.geysermc.connector.network.translators.inventory;
 
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
+import com.nukkitx.protocol.bedrock.data.inventory.ContainerSlotType;
 import org.geysermc.connector.inventory.Inventory;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.inventory.updater.ChestInventoryUpdater;
 import org.geysermc.connector.network.translators.inventory.updater.InventoryUpdater;
-import org.geysermc.connector.utils.InventoryUtils;
-
-import java.util.List;
 
 public abstract class ChestInventoryTranslator extends BaseInventoryTranslator {
     private final InventoryUpdater updater;
@@ -53,17 +50,10 @@ public abstract class ChestInventoryTranslator extends BaseInventoryTranslator {
     }
 
     @Override
-    public void translateActions(GeyserSession session, Inventory inventory, List<InventoryActionData> actions) {
-        for (InventoryActionData action : actions) {
-            if (action.getSource().getContainerId() == inventory.getId()) {
-                if (action.getSlot() >= size) {
-                    updateInventory(session, inventory);
-                    InventoryUtils.updateCursor(session);
-                    return;
-                }
-            }
-        }
-
-        super.translateActions(session, inventory, actions);
+    public BedrockContainerSlot javaSlotToBedrockContainer(int javaSlot) {
+        if (javaSlot < this.size) {
+            return new BedrockContainerSlot(ContainerSlotType.CONTAINER, javaSlot);
+        }
+        return super.javaSlotToBedrockContainer(javaSlot);
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/CraftingInventoryTranslator.java

@@ -1,89 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory;
-
-import com.github.steveice10.mc.protocol.data.game.entity.player.GameMode;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerId;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
-import com.nukkitx.protocol.bedrock.data.inventory.InventorySource;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.updater.CursorInventoryUpdater;
-import org.geysermc.connector.utils.InventoryUtils;
-
-import java.util.List;
-
-public class CraftingInventoryTranslator extends BlockInventoryTranslator {
-    public CraftingInventoryTranslator() {
-        super(10, "minecraft:crafting_table", ContainerType.WORKBENCH, new CursorInventoryUpdater());
-    }
-
-    @Override
-    public int bedrockSlotToJava(InventoryActionData action) {
-        if (action.getSlot() == 50) {
-            // Slot 50 is used for crafting with a controller.
-            return 0;
-        }
-
-        if (action.getSource().getContainerId() == ContainerId.UI) {
-            int slotnum = action.getSlot();
-            if (slotnum >= 32 && 42 >= slotnum) {
-                return slotnum - 31;
-            }
-        }
-        return super.bedrockSlotToJava(action);
-    }
-
-    @Override
-    public int javaSlotToBedrock(int slot) {
-        if (slot < size) {
-            return slot == 0 ? 50 : slot + 31;
-        }
-        return super.javaSlotToBedrock(slot);
-    }
-
-    @Override
-    public SlotType getSlotType(int javaSlot) {
-        if (javaSlot == 0)
-            return SlotType.OUTPUT;
-        return SlotType.NORMAL;
-    }
-
-    @Override
-    public void translateActions(GeyserSession session, Inventory inventory, List<InventoryActionData> actions) {
-        if (session.getGameMode() == GameMode.CREATIVE) {
-            for (InventoryActionData action : actions) {
-                if (action.getSource().getType() == InventorySource.Type.CREATIVE) {
-                    updateInventory(session, inventory);
-                    InventoryUtils.updateCursor(session);
-                    return;
-                }
-            }
-        }
-        super.translateActions(session, inventory, actions);
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/EnchantmentInventoryTranslator.java

@@ -1,266 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory;
-
-import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientClickWindowButtonPacket;
-import com.nukkitx.nbt.NbtMap;
-import com.nukkitx.nbt.NbtMapBuilder;
-import com.nukkitx.nbt.NbtType;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
-import com.nukkitx.protocol.bedrock.data.inventory.ItemData;
-import com.nukkitx.protocol.bedrock.packet.InventoryContentPacket;
-import com.nukkitx.protocol.bedrock.packet.InventorySlotPacket;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-import lombok.Setter;
-import lombok.ToString;
-import org.geysermc.connector.common.ChatColor;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.updater.InventoryUpdater;
-import org.geysermc.connector.network.translators.item.ItemRegistry;
-import org.geysermc.connector.network.translators.item.ItemTranslator;
-import org.geysermc.connector.utils.InventoryUtils;
-import org.geysermc.connector.utils.LocaleUtils;
-
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-
-/**
- * A temporary reconstruction of the enchantment table UI until our inventory rewrite is complete.
- * The enchantment table on Bedrock without server authoritative inventories doesn't tell us which button is pressed
- * when selecting an enchantment.
- */
-public class EnchantmentInventoryTranslator extends BlockInventoryTranslator {
-
-    private static final int DYE_ID = ItemRegistry.getItemEntry("minecraft:lapis_lazuli").getBedrockId();
-    private static final int ENCHANTED_BOOK_ID = ItemRegistry.getItemEntry("minecraft:enchanted_book").getBedrockId();
-
-    public EnchantmentInventoryTranslator(InventoryUpdater updater) {
-        super(2, "minecraft:hopper[enabled=false,facing=down]", ContainerType.HOPPER, updater);
-    }
-
-    @Override
-    public void translateActions(GeyserSession session, Inventory inventory, List<InventoryActionData> actions) {
-        for (InventoryActionData action : actions) {
-            if (action.getSource().getContainerId() == inventory.getId()) {
-                // This is the hopper UI
-                switch (action.getSlot()) {
-                    case 1:
-                        // Don't allow the slot to be put through if the item isn't lapis
-                        if ((action.getToItem().getId() != DYE_ID) && action.getToItem() != ItemData.AIR) {
-                            updateInventory(session, inventory);
-                            InventoryUtils.updateCursor(session);
-                            return;
-                        }
-                        break;
-                    case 2:
-                    case 3:
-                    case 4:
-                        // The books here act as buttons
-                        ClientClickWindowButtonPacket packet = new ClientClickWindowButtonPacket(inventory.getId(), action.getSlot() - 2);
-                        session.sendDownstreamPacket(packet);
-                        updateInventory(session, inventory);
-                        InventoryUtils.updateCursor(session);
-                        return;
-                    default:
-                        break;
-                }
-            }
-        }
-
-        super.translateActions(session, inventory, actions);
-    }
-
-    @Override
-    public void updateInventory(GeyserSession session, Inventory inventory) {
-        super.updateInventory(session, inventory);
-        ItemData[] items = new ItemData[5];
-        items[0] = ItemTranslator.translateToBedrock(session, inventory.getItem(0));
-        items[1] = ItemTranslator.translateToBedrock(session, inventory.getItem(1));
-        for (int i = 0; i < 3; i++) {
-            items[i + 2] = session.getEnchantmentSlotData()[i].getItem() != null ? session.getEnchantmentSlotData()[i].getItem() : createEnchantmentBook();
-        }
-
-        InventoryContentPacket contentPacket = new InventoryContentPacket();
-        contentPacket.setContainerId(inventory.getId());
-        contentPacket.setContents(items);
-        session.sendUpstreamPacket(contentPacket);
-    }
-
-    @Override
-    public void updateProperty(GeyserSession session, Inventory inventory, int key, int value) {
-        int bookSlotToUpdate;
-        switch (key) {
-            case 0:
-            case 1:
-            case 2:
-                // Experience required
-                bookSlotToUpdate = key;
-                session.getEnchantmentSlotData()[bookSlotToUpdate].setExperienceRequired(value);
-                break;
-            case 4:
-            case 5:
-            case 6:
-                // Enchantment name
-                bookSlotToUpdate = key - 4;
-                if (value != -1) {
-                    session.getEnchantmentSlotData()[bookSlotToUpdate].setEnchantmentType(EnchantmentTableEnchantments.values()[value - 1]);
-                } else {
-                    // -1 means no enchantment specified
-                    session.getEnchantmentSlotData()[bookSlotToUpdate].setEnchantmentType(null);
-                }
-                break;
-            case 7:
-            case 8:
-            case 9:
-                // Enchantment level
-                bookSlotToUpdate = key - 7;
-                session.getEnchantmentSlotData()[bookSlotToUpdate].setEnchantmentLevel(value);
-                break;
-            default:
-                return;
-        }
-        updateEnchantmentBook(session, inventory, bookSlotToUpdate);
-    }
-
-    @Override
-    public void openInventory(GeyserSession session, Inventory inventory) {
-        super.openInventory(session, inventory);
-        for (int i = 0; i < session.getEnchantmentSlotData().length; i++) {
-            session.getEnchantmentSlotData()[i] = new EnchantmentSlotData();
-        }
-    }
-
-    @Override
-    public void closeInventory(GeyserSession session, Inventory inventory) {
-        super.closeInventory(session, inventory);
-        Arrays.fill(session.getEnchantmentSlotData(), null);
-    }
-
-    private ItemData createEnchantmentBook() {
-        NbtMapBuilder root = NbtMap.builder();
-        NbtMapBuilder display = NbtMap.builder();
-
-        display.putString("Name", ChatColor.RESET + "No Enchantment");
-
-        root.put("display", display.build());
-        return ItemData.of(ENCHANTED_BOOK_ID, (short) 0, 1, root.build());
-    }
-
-    private void updateEnchantmentBook(GeyserSession session, Inventory inventory, int slot) {
-        NbtMapBuilder root = NbtMap.builder();
-        NbtMapBuilder display = NbtMap.builder();
-        EnchantmentSlotData data = session.getEnchantmentSlotData()[slot];
-        if (data.getEnchantmentType() != null) {
-            display.putString("Name", ChatColor.ITALIC + data.getEnchantmentType().toString(session) +
-                    (data.getEnchantmentLevel() != -1 ? " " + toRomanNumeral(session, data.getEnchantmentLevel()) : "") + "?");
-        } else {
-            display.putString("Name", ChatColor.RESET + "No Enchantment");
-        }
-
-        display.putList("Lore", NbtType.STRING, Collections.singletonList(ChatColor.DARK_GRAY + data.getExperienceRequired() + "xp"));
-        root.put("display", display.build());
-        ItemData book = ItemData.of(ENCHANTED_BOOK_ID, (short) 0, 1, root.build());
-
-        InventorySlotPacket slotPacket = new InventorySlotPacket();
-        slotPacket.setContainerId(inventory.getId());
-        slotPacket.setSlot(slot + 2);
-        slotPacket.setItem(book);
-        session.sendUpstreamPacket(slotPacket);
-        data.setItem(book);
-    }
-
-    private String toRomanNumeral(GeyserSession session, int level) {
-        return LocaleUtils.getLocaleString("enchantment.level." + level,
-                session.getLocale());
-    }
-
-    /**
-     * Stores the data of each slot in an enchantment table
-     */
-    @NoArgsConstructor
-    @Getter
-    @Setter
-    @ToString
-    public static class EnchantmentSlotData {
-        private EnchantmentTableEnchantments enchantmentType = null;
-        private int enchantmentLevel = 0;
-        private int experienceRequired = 0;
-        private ItemData item;
-    }
-
-    /**
-     * Classifies enchantments by Java order
-     */
-    public enum EnchantmentTableEnchantments {
-        PROTECTION,
-        FIRE_PROTECTION,
-        FEATHER_FALLING,
-        BLAST_PROTECTION,
-        PROJECTILE_PROTECTION,
-        RESPIRATION,
-        AQUA_AFFINITY,
-        THORNS,
-        DEPTH_STRIDER,
-        FROST_WALKER,
-        BINDING_CURSE,
-        SHARPNESS,
-        SMITE,
-        BANE_OF_ARTHROPODS,
-        KNOCKBACK,
-        FIRE_ASPECT,
-        LOOTING,
-        SWEEPING,
-        EFFICIENCY,
-        SILK_TOUCH,
-        UNBREAKING,
-        FORTUNE,
-        POWER,
-        PUNCH,
-        FLAME,
-        INFINITY,
-        LUCK_OF_THE_SEA,
-        LURE,
-        LOYALTY,
-        IMPALING,
-        RIPTIDE,
-        CHANNELING,
-        MENDING,
-        VANISHING_CURSE, // After this is not documented
-        MULTISHOT,
-        PIERCING,
-        QUICK_CHARGE,
-        SOUL_SPEED;
-
-        public String toString(GeyserSession session) {
-            return LocaleUtils.getLocaleString("enchantment.minecraft." + this.toString().toLowerCase(),
-                    session.getLocale());
-        }
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/FurnaceInventoryTranslator.java

@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory;
-
-import com.github.steveice10.mc.protocol.data.game.window.WindowType;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
-import com.nukkitx.protocol.bedrock.packet.ContainerSetDataPacket;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.updater.ContainerInventoryUpdater;
-
-public class FurnaceInventoryTranslator extends BlockInventoryTranslator {
-    public FurnaceInventoryTranslator() {
-        super(3, "minecraft:furnace[facing=north,lit=false]", ContainerType.FURNACE, new ContainerInventoryUpdater());
-    }
-
-    @Override
-    public void updateProperty(GeyserSession session, Inventory inventory, int key, int value) {
-        ContainerSetDataPacket dataPacket = new ContainerSetDataPacket();
-        dataPacket.setWindowId((byte) inventory.getId());
-        switch (key) {
-            case 0:
-                dataPacket.setProperty(ContainerSetDataPacket.FURNACE_LIT_TIME);
-                break;
-            case 1:
-                dataPacket.setProperty(ContainerSetDataPacket.FURNACE_LIT_DURATION);
-                break;
-            case 2:
-                dataPacket.setProperty(ContainerSetDataPacket.FURNACE_TICK_COUNT);
-                if (inventory.getWindowType() == WindowType.BLAST_FURNACE || inventory.getWindowType() == WindowType.SMOKER) {
-                    value *= 2;
-                }
-                break;
-            default:
-                return;
-        }
-        dataPacket.setValue(value);
-        session.sendUpstreamPacket(dataPacket);
-    }
-
-    @Override
-    public SlotType getSlotType(int javaSlot) {
-        if (javaSlot == 2)
-            return SlotType.FURNACE_OUTPUT;
-        return SlotType.NORMAL;
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/GrindstoneInventoryTranslator.java

@@ -1,69 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory;
-
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerId;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
-import org.geysermc.connector.network.translators.inventory.updater.CursorInventoryUpdater;
-
-public class GrindstoneInventoryTranslator extends BlockInventoryTranslator {
-
-    public GrindstoneInventoryTranslator() {
-        super(3, "minecraft:grindstone[face=floor,facing=north]", ContainerType.GRINDSTONE, new CursorInventoryUpdater());
-    }
-
-    @Override
-    public int bedrockSlotToJava(InventoryActionData action) {
-        final int slot = super.bedrockSlotToJava(action);
-        if (action.getSource().getContainerId() == ContainerId.UI) {
-            switch (slot) {
-                case 16:
-                    return 0;
-                case 17:
-                    return 1;
-                case 50:
-                    return 2;
-                default:
-                    return slot;
-            }
-        } return slot;
-    }
-
-    @Override
-    public int javaSlotToBedrock(int slot) {
-        switch (slot) {
-            case 0:
-                return 16;
-            case 1:
-                return 17;
-            case 2:
-                return 50;
-        }
-        return super.javaSlotToBedrock(slot);
-    }
-
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/InventoryTranslator.java

@@ -25,18 +25,26 @@
 
 package org.geysermc.connector.network.translators.inventory;
 
+import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
 import com.github.steveice10.mc.protocol.data.game.window.WindowType;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
+import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientCreativeInventoryActionPacket;
+import com.nukkitx.protocol.bedrock.data.inventory.ContainerSlotType;
+import com.nukkitx.protocol.bedrock.data.inventory.StackRequestSlotInfoData;
+import com.nukkitx.protocol.bedrock.data.inventory.stackrequestactions.*;
+import com.nukkitx.protocol.bedrock.packet.ItemStackRequestPacket;
+import com.nukkitx.protocol.bedrock.packet.ItemStackResponsePacket;
 import lombok.AllArgsConstructor;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.updater.ContainerInventoryUpdater;
-import org.geysermc.connector.network.translators.inventory.updater.InventoryUpdater;
+import org.geysermc.connector.network.translators.inventory.click.Click;
+import org.geysermc.connector.network.translators.inventory.click.ClickPlan;
+import org.geysermc.connector.network.translators.item.ItemRegistry;
+import org.geysermc.connector.network.translators.item.ItemTranslator;
+import org.geysermc.connector.utils.InventoryUtils;
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 @AllArgsConstructor
 public abstract class InventoryTranslator {
@@ -50,12 +58,13 @@ public abstract class InventoryTranslator {
             put(WindowType.GENERIC_9X4, new DoubleChestInventoryTranslator(36));
             put(WindowType.GENERIC_9X5, new DoubleChestInventoryTranslator(45));
             put(WindowType.GENERIC_9X6, new DoubleChestInventoryTranslator(54));
-            put(WindowType.BREWING_STAND, new BrewingInventoryTranslator());
+            /*put(WindowType.BREWING_STAND, new BrewingInventoryTranslator());
             put(WindowType.ANVIL, new AnvilInventoryTranslator());
             put(WindowType.CRAFTING, new CraftingInventoryTranslator());
-            //put(WindowType.GRINDSTONE, new GrindstoneInventoryTranslator()); //FIXME
+            put(WindowType.GRINDSTONE, new GrindstoneInventoryTranslator());*/
             put(WindowType.MERCHANT, new MerchantInventoryTranslator());
-            //put(WindowType.SMITHING, new SmithingInventoryTranslator()); //TODO for server authoritative inventories
+            /*put(WindowType.SMITHING, new SmithingInventoryTranslator());
+            //put(WindowType.ENCHANTMENT, new EnchantmentInventoryTranslator()); //TODO
 
             InventoryTranslator furnace = new FurnaceInventoryTranslator();
             put(WindowType.FURNACE, furnace);
@@ -63,14 +72,15 @@ public abstract class InventoryTranslator {
             put(WindowType.SMOKER, furnace);
 
             InventoryUpdater containerUpdater = new ContainerInventoryUpdater();
-            put(WindowType.ENCHANTMENT, new EnchantmentInventoryTranslator(containerUpdater)); //TODO
             put(WindowType.GENERIC_3X3, new BlockInventoryTranslator(9, "minecraft:dispenser[facing=north,triggered=false]", ContainerType.DISPENSER, containerUpdater));
             put(WindowType.HOPPER, new BlockInventoryTranslator(5, "minecraft:hopper[enabled=false,facing=down]", ContainerType.HOPPER, containerUpdater));
             put(WindowType.SHULKER_BOX, new BlockInventoryTranslator(27, "minecraft:shulker_box[facing=north]", ContainerType.CONTAINER, containerUpdater));
-            //put(WindowType.BEACON, new BlockInventoryTranslator(1, "minecraft:beacon", ContainerType.BEACON)); //TODO
+            //put(WindowType.BEACON, new BlockInventoryTranslator(1, "minecraft:beacon", ContainerType.BEACON)); //TODO*/
         }
     };
 
+    public static final int PLAYER_INVENTORY_SIZE = 36;
+    public static final int PLAYER_INVENTORY_OFFSET = 9;
     public final int size;
 
     public abstract void prepareInventory(GeyserSession session, Inventory inventory);
@@ -79,8 +89,428 @@ public abstract class InventoryTranslator {
     public abstract void updateProperty(GeyserSession session, Inventory inventory, int key, int value);
     public abstract void updateInventory(GeyserSession session, Inventory inventory);
     public abstract void updateSlot(GeyserSession session, Inventory inventory, int slot);
-    public abstract int bedrockSlotToJava(InventoryActionData action);
-    public abstract int javaSlotToBedrock(int slot);
+    public abstract int bedrockSlotToJava(StackRequestSlotInfoData slotInfoData);
+    public abstract int javaSlotToBedrock(int javaSlot); //TODO
+    public abstract BedrockContainerSlot javaSlotToBedrockContainer(int javaSlot); //TODO
     public abstract SlotType getSlotType(int javaSlot);
-    public abstract void translateActions(GeyserSession session, Inventory inventory, List<InventoryActionData> actions);
+    public abstract Inventory createInventory(String name, int windowId, WindowType windowType, PlayerInventory playerInventory);
+
+    public void translateRequests(GeyserSession session, Inventory inventory, List<ItemStackRequestPacket.Request> requests) {
+        ItemStackResponsePacket responsePacket = new ItemStackResponsePacket();
+        for (ItemStackRequestPacket.Request request : requests) {
+            if (request.getActions().length > 0) {
+                StackRequestActionData firstAction = request.getActions()[0];
+                if (firstAction.getType() == StackRequestActionType.CRAFT_RECIPE || firstAction.getType() == StackRequestActionType.CRAFT_RECIPE_AUTO) {
+                    responsePacket.getEntries().add(translateCraftingRequest(session, inventory, request));
+                } else if (firstAction.getType() == StackRequestActionType.CRAFT_CREATIVE) {
+                    responsePacket.getEntries().add(translateCreativeRequest(session, inventory, request));
+                } else {
+                    responsePacket.getEntries().add(translateRequest(session, inventory, request));
+                }
+            } else {
+                responsePacket.getEntries().add(rejectRequest(request));
+            }
+        }
+        session.sendUpstreamPacket(responsePacket);
+        System.out.println(responsePacket);
+    }
+
+    public ItemStackResponsePacket.Response translateRequest(GeyserSession session, Inventory inventory, ItemStackRequestPacket.Request request) {
+        System.out.println(request);
+        ClickPlan plan = new ClickPlan(session, this, inventory);
+        for (StackRequestActionData action : request.getActions()) {
+            GeyserItemStack cursor = session.getPlayerInventory().getCursor();
+            switch (action.getType()) {
+                case TAKE:
+                case PLACE: {
+                    TransferStackRequestActionData transferAction = (TransferStackRequestActionData) action;
+                    if (!(checkNetId(session, inventory, transferAction.getSource()) && checkNetId(session, inventory, transferAction.getDestination())))
+                        return rejectRequest(request);
+
+                    if (isCursor(transferAction.getSource()) && isCursor(transferAction.getDestination())) { //???
+                        return rejectRequest(request);
+                    } else if (isCursor(transferAction.getSource())) { //releasing cursor
+                        int sourceAmount = cursor.getAmount();
+                        int destSlot = bedrockSlotToJava(transferAction.getDestination());
+                        if (transferAction.getCount() == sourceAmount) { //release all
+                            plan.add(Click.LEFT, destSlot);
+                        } else { //release some
+                            for (int i = 0; i < transferAction.getCount(); i++) {
+                                plan.add(Click.RIGHT, destSlot);
+                            }
+                        }
+                    } else if (isCursor(transferAction.getDestination())) { //picking up into cursor
+                        int sourceSlot = bedrockSlotToJava(transferAction.getSource());
+                        GeyserItemStack sourceItem = plan.getItem(sourceSlot);
+                        int sourceAmount = sourceItem.getAmount();
+                        if (cursor.isEmpty()) { //picking up into empty cursor
+                            if (transferAction.getCount() == sourceAmount) { //pickup all
+                                plan.add(Click.LEFT, sourceSlot);
+                            } else if (transferAction.getCount() == sourceAmount - (sourceAmount / 2)) { //larger half; simple right click
+                                plan.add(Click.RIGHT, sourceSlot);
+                            } else { //pickup some; not a simple right click
+                                plan.add(Click.LEFT, sourceSlot); //first pickup all
+                                for (int i = 0; i < sourceAmount - transferAction.getCount(); i++) {
+                                    plan.add(Click.RIGHT, sourceSlot); //release extra items back into source slot
+                                }
+                            }
+                        } else { //pickup into non-empty cursor
+                            if (!InventoryUtils.canStack(cursor, plan.getItem(sourceSlot))) { //doesn't make sense, reject
+                                return rejectRequest(request);
+                            }
+                            if (transferAction.getCount() != sourceAmount) { //TODO: handle partially picking up into non-empty cursor (temp slot)
+                                return rejectRequest(request);
+                            }
+                            plan.add(Click.LEFT, sourceSlot); //release cursor onto source slot
+                            plan.add(Click.LEFT, sourceSlot); //pickup combined cursor and source
+                        }
+                    } else { //transfer from one slot to another
+                        if (!cursor.isEmpty()) { //TODO: handle slot transfer when cursor is already in use (temp slot)
+                            return rejectRequest(request);
+                        }
+                        int sourceSlot = bedrockSlotToJava(transferAction.getSource());
+                        int sourceAmount = plan.getItem(sourceSlot).getAmount();
+                        int destSlot = bedrockSlotToJava(transferAction.getDestination());
+                        if (transferAction.getCount() == sourceAmount) { //transfer all
+                            plan.add(Click.LEFT, sourceSlot); //pickup source
+                            plan.add(Click.LEFT, destSlot); //let go of all items and done
+                        } else { //transfer some
+                            //try to transfer items with least clicks possible
+                            int halfSource = sourceAmount / 2; //smaller half
+                            int holding;
+                            if (transferAction.getCount() <= halfSource) { //faster to take only half
+                                plan.add(Click.RIGHT, sourceSlot);
+                                holding = halfSource;
+                            } else { //need all
+                                plan.add(Click.LEFT, sourceSlot);
+                                holding = sourceAmount;
+                            }
+                            if (transferAction.getCount() > holding / 2) { //faster to release extra items onto source or dest slot?
+                                for (int i = 0; i < holding - transferAction.getCount(); i++) {
+                                    plan.add(Click.RIGHT, sourceSlot); //prepare cursor
+                                }
+                                plan.add(Click.LEFT, destSlot); //release cursor onto dest slot
+                            } else {
+                                for (int i = 0; i < transferAction.getCount(); i++) {
+                                    plan.add(Click.RIGHT, destSlot); //right click until transfer goal is met
+                                }
+                                plan.add(Click.LEFT, sourceSlot); //return extra items to source slot
+                            }
+                        }
+                    }
+                    break;
+                }
+                case SWAP: { //TODO
+                    SwapStackRequestActionData swapAction = (SwapStackRequestActionData) action;
+                    if (!(checkNetId(session, inventory, swapAction.getSource()) && checkNetId(session, inventory, swapAction.getDestination())))
+                        return rejectRequest(request);
+
+                    if (isCursor(swapAction.getSource()) && isCursor(swapAction.getDestination())) { //???
+                        return rejectRequest(request);
+                    } else if (isCursor(swapAction.getSource())) { //swap cursor
+                        int destSlot = bedrockSlotToJava(swapAction.getDestination());
+                        if (InventoryUtils.canStack(cursor, plan.getItem(destSlot))) { //TODO: cannot simply swap if cursor stacks with slot (temp slot)
+                            return rejectRequest(request);
+                        }
+                        plan.add(Click.LEFT, destSlot);
+                    } else if (isCursor(swapAction.getDestination())) { //swap cursor
+                        int sourceSlot = bedrockSlotToJava(swapAction.getSource());
+                        if (InventoryUtils.canStack(cursor, plan.getItem(sourceSlot))) { //TODO
+                            return rejectRequest(request);
+                        }
+                        plan.add(Click.LEFT, sourceSlot);
+                    } else {
+                        int sourceSlot = bedrockSlotToJava(swapAction.getSource());
+                        int destSlot = bedrockSlotToJava(swapAction.getDestination());
+                        if (!cursor.isEmpty()) { //TODO: (temp slot)
+                            return rejectRequest(request);
+                        }
+                        if (sourceSlot == destSlot) { //doesn't make sense
+                            return rejectRequest(request);
+                        }
+                        if (InventoryUtils.canStack(plan.getItem(sourceSlot), plan.getItem(destSlot))) { //TODO: (temp slot)
+                            return rejectRequest(request);
+                        }
+                        plan.add(Click.LEFT, sourceSlot); //pickup source into cursor
+                        plan.add(Click.LEFT, destSlot); //swap cursor with dest slot
+                        plan.add(Click.LEFT, sourceSlot); //release cursor onto source
+                    }
+                    break;
+                }
+                case DROP: {
+                    DropStackRequestActionData dropAction = (DropStackRequestActionData) action;
+                    if (!checkNetId(session, inventory, dropAction.getSource()))
+                        return rejectRequest(request);
+
+                    if (isCursor(dropAction.getSource())) { //clicking outside of window
+                        int sourceAmount = plan.getCursor().getAmount();
+                        if (dropAction.getCount() == sourceAmount) { //drop all
+                            plan.add(Click.LEFT_OUTSIDE, Click.OUTSIDE_SLOT);
+                        } else { //drop some
+                            for (int i = 0; i < dropAction.getCount(); i++) {
+                                plan.add(Click.RIGHT_OUTSIDE, Click.OUTSIDE_SLOT); //drop one until goal is met
+                            }
+                        }
+                    } else { //dropping from inventory
+                        int sourceSlot = bedrockSlotToJava(dropAction.getSource());
+                        int sourceAmount = plan.getItem(sourceSlot).getAmount();
+                        if (dropAction.getCount() == sourceAmount && sourceAmount > 1) { //dropping all? (prefer DROP_ONE if only one)
+                            plan.add(Click.DROP_ALL, sourceSlot);
+                        } else { //drop some
+                            for (int i = 0; i < dropAction.getCount(); i++) {
+                                plan.add(Click.DROP_ONE, sourceSlot); //drop one until goal is met
+                            }
+                        }
+                    }
+                    break;
+                }
+                case CRAFT_CREATIVE: {
+                    CraftCreativeStackRequestActionData creativeAction = (CraftCreativeStackRequestActionData) action;
+                    System.out.println(creativeAction.getCreativeItemNetworkId());
+                }
+                default:
+                    return rejectRequest(request);
+            }
+        }
+        plan.execute(false);
+        return acceptRequest(request, makeContainerEntries(session, inventory, plan.getAffectedSlots()));
+    }
+    
+    public ItemStackResponsePacket.Response translateCraftingRequest(GeyserSession session, Inventory inventory, ItemStackRequestPacket.Request request) {
+        System.out.println(request);
+
+        int recipeId = 0;
+        int resultSize = 0;
+        boolean autoCraft;
+        CraftState craftState = CraftState.START;
+
+        int leftover = 0;
+        ClickPlan plan = new ClickPlan(session, this, inventory);
+        for (StackRequestActionData action : request.getActions()) {
+            switch (action.getType()) {
+                case CRAFT_RECIPE: {
+                    CraftRecipeStackRequestActionData craftAction = (CraftRecipeStackRequestActionData) action;
+                    if (craftState != CraftState.START) {
+                        return rejectRequest(request);
+                    }
+                    craftState = CraftState.RECIPE_ID;
+                    recipeId = craftAction.getRecipeNetworkId();
+                    System.out.println(session.getCraftingRecipes().get(recipeId).toString());
+                    autoCraft = false;
+                    break;
+                }
+                /*case CRAFT_RECIPE_AUTO: {
+                    AutoCraftRecipeStackRequestActionData autoCraftAction = (AutoCraftRecipeStackRequestActionData) action;
+                    if (craftState != CraftState.START) {
+                        return rejectRequest(request);
+                    }
+                    craftState = CraftState.RECIPE_ID;
+                    recipeId = autoCraftAction.getRecipeNetworkId();
+                    autoCraft = true;
+                    //TODO: reject transaction if crafting grid is not clear
+                    break;
+                }*/
+                case CRAFT_RESULTS_DEPRECATED: {
+                    CraftResultsDeprecatedStackRequestActionData deprecatedCraftAction = (CraftResultsDeprecatedStackRequestActionData) action;
+                    if (craftState != CraftState.RECIPE_ID) {
+                        return rejectRequest(request);
+                    }
+                    craftState = CraftState.DEPRECATED;
+
+                    if (deprecatedCraftAction.getResultItems().length != 1) {
+                        return rejectRequest(request);
+                    }
+                    resultSize = deprecatedCraftAction.getResultItems()[0].getCount();
+                    if (resultSize <= 0) {
+                        return rejectRequest(request);
+                    }
+                    break;
+                }
+                case CONSUME: {
+                    ConsumeStackRequestActionData consumeAction = (ConsumeStackRequestActionData) action;
+                    if (craftState != CraftState.DEPRECATED && craftState != CraftState.INGREDIENTS) {
+                        return rejectRequest(request);
+                    }
+                    craftState = CraftState.INGREDIENTS;
+                    break;
+                }
+                case TAKE:
+                case PLACE: {
+                    TransferStackRequestActionData transferAction = (TransferStackRequestActionData) action;
+                    if (craftState != CraftState.INGREDIENTS && craftState != CraftState.TRANSFER) {
+                        return rejectRequest(request);
+                    }
+                    craftState = CraftState.TRANSFER;
+
+                    if (transferAction.getSource().getContainer() != ContainerSlotType.CREATIVE_OUTPUT) {
+                        return rejectRequest(request);
+                    }
+                    if (transferAction.getCount() <= 0) {
+                        return rejectRequest(request);
+                    }
+
+                    int sourceSlot = bedrockSlotToJava(transferAction.getSource());
+                    if (isCursor(transferAction.getDestination())) {
+                        plan.add(Click.LEFT, sourceSlot);
+                        craftState = CraftState.DONE;
+                    } else {
+                        int destSlot = bedrockSlotToJava(transferAction.getDestination());
+                        if (leftover != 0) {
+                            if (transferAction.getCount() > leftover) {
+                                return rejectRequest(request);
+                            }
+                            if (transferAction.getCount() == leftover) {
+                                plan.add(Click.LEFT, destSlot);
+                            } else {
+                                for (int i = 0; i < transferAction.getCount(); i++) {
+                                    plan.add(Click.RIGHT, destSlot);
+                                }
+                            }
+                            leftover -= transferAction.getCount();
+                            break;
+                        }
+
+                        int remainder = transferAction.getCount() % resultSize;
+                        int timesToCraft = transferAction.getCount() / resultSize;
+                        for (int i = 0; i < timesToCraft; i++) {
+                            plan.add(Click.LEFT, sourceSlot);
+                            plan.add(Click.LEFT, destSlot);
+                        }
+                        if (remainder > 0) {
+                            plan.add(Click.LEFT, 0);
+                            for (int i = 0; i < remainder; i++) {
+                                plan.add(Click.RIGHT, destSlot);
+                            }
+                            leftover = resultSize - remainder;
+                        }
+                    }
+                    break;
+                }
+                default:
+                    return rejectRequest(request);
+            }
+        }
+        plan.execute(false);
+        Set<Integer> affectedSlots = plan.getAffectedSlots();
+        affectedSlots.addAll(Arrays.asList(1, 2, 3, 4)); //TODO: crafting grid
+        return acceptRequest(request, makeContainerEntries(session, inventory, affectedSlots));
+    }
+
+    public ItemStackResponsePacket.Response translateCreativeRequest(GeyserSession session, Inventory inventory, ItemStackRequestPacket.Request request) {
+        int creativeId = 0;
+        CraftState craftState = CraftState.START;
+        for (StackRequestActionData action : request.getActions()) {
+            switch (action.getType()) {
+                case CRAFT_CREATIVE: {
+                    CraftCreativeStackRequestActionData creativeAction = (CraftCreativeStackRequestActionData) action;
+                    if (craftState != CraftState.START) {
+                        return rejectRequest(request);
+                    }
+                    craftState = CraftState.RECIPE_ID;
+
+                    creativeId = creativeAction.getCreativeItemNetworkId();
+                    break;
+                }
+                case CRAFT_RESULTS_DEPRECATED: {
+                    CraftResultsDeprecatedStackRequestActionData deprecatedCraftAction = (CraftResultsDeprecatedStackRequestActionData) action;
+                    if (craftState != CraftState.RECIPE_ID) {
+                        return rejectRequest(request);
+                    }
+                    craftState = CraftState.DEPRECATED;
+                    break;
+                }
+                case TAKE:
+                case PLACE: {
+                    TransferStackRequestActionData transferAction = (TransferStackRequestActionData) action;
+                    if (craftState != CraftState.DEPRECATED) {
+                        return rejectRequest(request);
+                    }
+                    craftState = CraftState.TRANSFER;
+
+                    if (transferAction.getSource().getContainer() != ContainerSlotType.CREATIVE_OUTPUT) {
+                        return rejectRequest(request);
+                    }
+                    if (isCursor(transferAction.getDestination())) {
+                        session.getPlayerInventory().setCursor(GeyserItemStack.from(ItemTranslator.translateToJava(ItemRegistry.CREATIVE_ITEMS[creativeId]), session.getItemNetId().getAndIncrement())); //TODO
+                        return acceptRequest(request, makeContainerEntries(session, inventory, Collections.emptySet()));
+                    } else {
+                        int javaSlot = bedrockSlotToJava(transferAction.getDestination());
+                        ItemStack javaItem = ItemTranslator.translateToJava(ItemRegistry.CREATIVE_ITEMS[creativeId - 1]); //TODO
+                        inventory.setItem(javaSlot, GeyserItemStack.from(javaItem, session.getItemNetId().getAndIncrement()));
+                        ClientCreativeInventoryActionPacket creativeActionPacket = new ClientCreativeInventoryActionPacket(
+                                javaSlot,
+                                javaItem
+                        );
+                        session.sendDownstreamPacket(creativeActionPacket);
+                        Set<Integer> affectedSlots = Collections.singleton(javaSlot);
+                        return acceptRequest(request, makeContainerEntries(session, inventory, affectedSlots));
+                    }
+                }
+                default:
+                    return rejectRequest(request);
+            }
+        }
+        return rejectRequest(request);
+    }
+
+    public static ItemStackResponsePacket.Response acceptRequest(ItemStackRequestPacket.Request request, List<ItemStackResponsePacket.ContainerEntry> containerEntries) {
+        return new ItemStackResponsePacket.Response(ItemStackResponsePacket.ResponseStatus.OK, request.getRequestId(), containerEntries);
+    }
+
+    public static ItemStackResponsePacket.Response rejectRequest(ItemStackRequestPacket.Request request) {
+        new Throwable("DEBUGGING: ItemStackRequest rejected").printStackTrace(); //TODO: temporary debugging
+        return new ItemStackResponsePacket.Response(ItemStackResponsePacket.ResponseStatus.ERROR, request.getRequestId(), Collections.emptyList());
+    }
+
+    public boolean checkNetId(GeyserSession session, Inventory inventory, StackRequestSlotInfoData slotInfoData) {
+        if (slotInfoData.getStackNetworkId() < 0)
+            return true;
+
+        GeyserItemStack currentItem = isCursor(slotInfoData) ? session.getPlayerInventory().getCursor() : inventory.getItem(bedrockSlotToJava(slotInfoData));
+        return currentItem.getNetId() == slotInfoData.getStackNetworkId();
+    }
+
+    public List<ItemStackResponsePacket.ContainerEntry> makeContainerEntries(GeyserSession session, Inventory inventory, Set<Integer> affectedSlots) {
+        Map<ContainerSlotType, List<ItemStackResponsePacket.ItemEntry>> containerMap = new HashMap<>();
+        for (int slot : affectedSlots) {
+            BedrockContainerSlot bedrockSlot = javaSlotToBedrockContainer(slot);
+            List<ItemStackResponsePacket.ItemEntry> list = containerMap.computeIfAbsent(bedrockSlot.getContainer(), k -> new ArrayList<>());
+            list.add(makeItemEntry(session, bedrockSlot.getSlot(), inventory.getItem(slot)));
+        }
+
+        List<ItemStackResponsePacket.ContainerEntry> containerEntries = new ArrayList<>();
+        for (Map.Entry<ContainerSlotType, List<ItemStackResponsePacket.ItemEntry>> entry : containerMap.entrySet()) {
+            containerEntries.add(new ItemStackResponsePacket.ContainerEntry(entry.getKey(), entry.getValue()));
+        }
+
+        ItemStackResponsePacket.ItemEntry cursorEntry = makeItemEntry(session, 0, session.getPlayerInventory().getCursor());
+        containerEntries.add(new ItemStackResponsePacket.ContainerEntry(ContainerSlotType.CURSOR, Collections.singletonList(cursorEntry)));
+
+        return containerEntries;
+    }
+
+    public static ItemStackResponsePacket.ItemEntry makeItemEntry(GeyserSession session, int bedrockSlot, GeyserItemStack itemStack) {
+        ItemStackResponsePacket.ItemEntry itemEntry;
+        if (!itemStack.isEmpty()) {
+            int newNetId = session.getItemNetId().getAndIncrement();
+            itemStack.setNetId(newNetId);
+            itemEntry = new ItemStackResponsePacket.ItemEntry((byte) bedrockSlot, (byte) bedrockSlot, (byte) itemStack.getAmount(), newNetId, "");
+        } else {
+            itemEntry = new ItemStackResponsePacket.ItemEntry((byte) bedrockSlot, (byte) bedrockSlot, (byte) 0, 0, "");
+        }
+        return itemEntry;
+    }
+
+    private static boolean isCursor(StackRequestSlotInfoData slotInfoData) {
+        return slotInfoData.getContainer() == ContainerSlotType.CURSOR;
+    }
+
+    private enum CraftState {
+        START,
+        RECIPE_ID,
+        DEPRECATED,
+        INGREDIENTS,
+        TRANSFER,
+        DONE
+    }
 }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/MerchantInventoryTranslator.java

@@ -25,14 +25,21 @@
 
 package org.geysermc.connector.network.translators.inventory;
 
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerId;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
+import com.github.steveice10.mc.protocol.data.game.window.WindowType;
+import com.nukkitx.math.vector.Vector3f;
+import com.nukkitx.protocol.bedrock.data.entity.EntityData;
+import com.nukkitx.protocol.bedrock.data.entity.EntityDataMap;
+import com.nukkitx.protocol.bedrock.data.entity.EntityLinkData;
+import com.nukkitx.protocol.bedrock.data.inventory.*;
+import com.nukkitx.protocol.bedrock.packet.SetEntityLinkPacket;
+import org.geysermc.connector.entity.Entity;
+import org.geysermc.connector.entity.type.EntityType;
 import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.inventory.MerchantContainer;
+import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.updater.CursorInventoryUpdater;
 import org.geysermc.connector.network.translators.inventory.updater.InventoryUpdater;
-
-import java.util.List;
+import org.geysermc.connector.network.translators.inventory.updater.UIInventoryUpdater;
 
 public class MerchantInventoryTranslator extends BaseInventoryTranslator {
 
@@ -40,7 +47,7 @@ public class MerchantInventoryTranslator extends BaseInventoryTranslator {
 
     public MerchantInventoryTranslator() {
         super(3);
-        this.updater = new CursorInventoryUpdater();
+        this.updater = new UIInventoryUpdater();
     }
 
     @Override
@@ -57,26 +64,30 @@ public class MerchantInventoryTranslator extends BaseInventoryTranslator {
     }
 
     @Override
-    public int bedrockSlotToJava(InventoryActionData action) {
-        switch (action.getSource().getContainerId()) {
-            case ContainerId.UI:
-                switch (action.getSlot()) {
-                    case 4:
+    public BedrockContainerSlot javaSlotToBedrockContainer(int slot) {
+        switch (slot) {
+            case 0:
+                return new BedrockContainerSlot(ContainerSlotType.TRADE2_INGREDIENT1, 4);
+            case 1:
+                return new BedrockContainerSlot(ContainerSlotType.TRADE2_INGREDIENT2, 5);
+            case 2:
+                return new BedrockContainerSlot(ContainerSlotType.TRADE2_RESULT, 50);
+        }
+        return super.javaSlotToBedrockContainer(slot);
+    }
+
+    @Override
+    public int bedrockSlotToJava(StackRequestSlotInfoData slotInfoData) {
+        switch (slotInfoData.getContainer()) {
+            case TRADE2_INGREDIENT1:
                 return 0;
-                    case 5:
+            case TRADE2_INGREDIENT2:
                 return 1;
-                    case 50:
+            case TRADE2_RESULT:
+            case CREATIVE_OUTPUT:
                 return 2;
         }
-                break;
-            case -28: // Trading 1?
-                return 0;
-            case -29: // Trading 2?
-                return 1;
-            case -30: // Trading Output?
-                return 2;
-        }
-        return super.bedrockSlotToJava(action);
+        return super.bedrockSlotToJava(slotInfoData);
     }
 
     @Override
@@ -89,18 +100,40 @@ public class MerchantInventoryTranslator extends BaseInventoryTranslator {
 
     @Override
     public void prepareInventory(GeyserSession session, Inventory inventory) {
+        MerchantContainer merchantInventory = (MerchantContainer) inventory;
+        if (merchantInventory.getVillager() == null) {
+            long geyserId = session.getEntityCache().getNextEntityId().incrementAndGet();
+            Vector3f pos = session.getPlayerEntity().getPosition().sub(0, 3, 0);
 
+            EntityDataMap metadata = new EntityDataMap();
+            metadata.put(EntityData.SCALE, 0f);
+            metadata.put(EntityData.BOUNDING_BOX_WIDTH, 0f);
+            metadata.put(EntityData.BOUNDING_BOX_HEIGHT, 0f);
+
+            Entity villager = new Entity(0, geyserId, EntityType.VILLAGER, pos, Vector3f.ZERO, Vector3f.ZERO);
+            villager.setMetadata(metadata);
+            villager.spawnEntity(session);
+
+            SetEntityLinkPacket linkPacket = new SetEntityLinkPacket();
+            EntityLinkData.Type type = EntityLinkData.Type.PASSENGER;
+            linkPacket.setEntityLink(new EntityLinkData(session.getPlayerEntity().getGeyserId(), geyserId, type, true, false));
+            session.sendUpstreamPacket(linkPacket);
+
+            merchantInventory.setVillager(villager);
+        }
     }
 
     @Override
     public void openInventory(GeyserSession session, Inventory inventory) {
-
+        //Handled in JavaTradeListTranslator
     }
 
     @Override
     public void closeInventory(GeyserSession session, Inventory inventory) {
-        session.setLastInteractedVillagerEid(-1);
-        session.setVillagerTrades(null);
+        MerchantContainer merchantInventory = (MerchantContainer) inventory;
+        if (merchantInventory.getVillager() != null) {
+            merchantInventory.getVillager().despawnEntity(session);
+        }
     }
 
     @Override
@@ -114,11 +147,7 @@ public class MerchantInventoryTranslator extends BaseInventoryTranslator {
     }
 
     @Override
-    public void translateActions(GeyserSession session, Inventory inventory, List<InventoryActionData> actions) {
-        if (actions.stream().anyMatch(a -> a.getSource().getContainerId() == -31)) {
-            return;
-        }
-
-        super.translateActions(session, inventory, actions);
+    public Inventory createInventory(String name, int windowId, WindowType windowType, PlayerInventory playerInventory) {
+        return new MerchantContainer(name, windowId, windowType, this.size, playerInventory);
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/PlayerInventoryTranslator.java

@@ -25,18 +25,15 @@
 
 package org.geysermc.connector.network.translators.inventory;
 
-import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
 import com.github.steveice10.mc.protocol.data.game.entity.player.GameMode;
-import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientCreativeInventoryActionPacket;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerId;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
-import com.nukkitx.protocol.bedrock.data.inventory.InventorySource;
-import com.nukkitx.protocol.bedrock.data.inventory.ItemData;
+import com.github.steveice10.mc.protocol.data.game.window.WindowType;
+import com.nukkitx.protocol.bedrock.data.inventory.*;
 import com.nukkitx.protocol.bedrock.packet.InventoryContentPacket;
 import com.nukkitx.protocol.bedrock.packet.InventorySlotPacket;
+import com.nukkitx.protocol.bedrock.packet.ItemStackRequestPacket;
 import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.action.InventoryActionDataTranslator;
 import org.geysermc.connector.network.translators.item.ItemTranslator;
 import org.geysermc.connector.utils.InventoryUtils;
 import org.geysermc.connector.utils.LanguageUtils;
@@ -59,11 +56,11 @@ public class PlayerInventoryTranslator extends InventoryTranslator {
         ItemData[] contents = new ItemData[36];
         // Inventory
         for (int i = 9; i < 36; i++) {
-            contents[i] = ItemTranslator.translateToBedrock(session, inventory.getItem(i));
+            contents[i] = inventory.getItem(i).getItemData(session);
         }
         // Hotbar
         for (int i = 36; i < 45; i++) {
-            contents[i - 36] = ItemTranslator.translateToBedrock(session, inventory.getItem(i));
+            contents[i - 36] = inventory.getItem(i).getItemData(session);
         }
         inventoryContentPacket.setContents(contents);
         session.sendUpstreamPacket(inventoryContentPacket);
@@ -73,7 +70,7 @@ public class PlayerInventoryTranslator extends InventoryTranslator {
         armorContentPacket.setContainerId(ContainerId.ARMOR);
         contents = new ItemData[4];
         for (int i = 5; i < 9; i++) {
-            contents[i - 5] = ItemTranslator.translateToBedrock(session, inventory.getItem(i));
+            contents[i - 5] = inventory.getItem(i).getItemData(session);
         }
         armorContentPacket.setContents(contents);
         session.sendUpstreamPacket(armorContentPacket);
@@ -81,7 +78,7 @@ public class PlayerInventoryTranslator extends InventoryTranslator {
         // Offhand
         InventoryContentPacket offhandPacket = new InventoryContentPacket();
         offhandPacket.setContainerId(ContainerId.OFFHAND);
-        offhandPacket.setContents(new ItemData[]{ItemTranslator.translateToBedrock(session, inventory.getItem(45))});
+        offhandPacket.setContents(new ItemData[]{inventory.getItem(45).getItemData(session)});
         session.sendUpstreamPacket(offhandPacket);
     }
 
@@ -100,7 +97,7 @@ public class PlayerInventoryTranslator extends InventoryTranslator {
             if (session.getGameMode() == GameMode.CREATIVE) {
                 slotPacket.setItem(UNUSUABLE_CRAFTING_SPACE_BLOCK);
             }else{
-                slotPacket.setItem(ItemTranslator.translateToBedrock(session, inventory.getItem(i)));
+                slotPacket.setItem(ItemTranslator.translateToBedrock(session, inventory.getItem(i).getItemStack()));
             }
 
             session.sendUpstreamPacket(slotPacket);
@@ -125,21 +122,23 @@ public class PlayerInventoryTranslator extends InventoryTranslator {
                 slotPacket.setContainerId(ContainerId.UI);
                 slotPacket.setSlot(slot + 27);
             }
-            slotPacket.setItem(ItemTranslator.translateToBedrock(session, inventory.getItem(slot)));
+            slotPacket.setItem(inventory.getItem(slot).getItemData(session));
             session.sendUpstreamPacket(slotPacket);
         } else if (slot == 45) {
             InventoryContentPacket offhandPacket = new InventoryContentPacket();
             offhandPacket.setContainerId(ContainerId.OFFHAND);
-            offhandPacket.setContents(new ItemData[]{ItemTranslator.translateToBedrock(session, inventory.getItem(slot))});
+            offhandPacket.setContents(new ItemData[]{inventory.getItem(slot).getItemData(session)});
             session.sendUpstreamPacket(offhandPacket);
         }
     }
 
     @Override
-    public int bedrockSlotToJava(InventoryActionData action) {
-        int slotnum = action.getSlot();
-        switch (action.getSource().getContainerId()) {
-            case ContainerId.INVENTORY:
+    public int bedrockSlotToJava(StackRequestSlotInfoData slotInfoData) {
+        int slotnum = slotInfoData.getSlot();
+        switch (slotInfoData.getContainer()) {
+            case HOTBAR_AND_INVENTORY:
+            case HOTBAR:
+            case INVENTORY:
                 // Inventory
                 if (slotnum >= 9 && slotnum <= 35) {
                     return slotnum;
@@ -149,19 +148,19 @@ public class PlayerInventoryTranslator extends InventoryTranslator {
                     return slotnum + 36;
                 }
                 break;
-            case ContainerId.ARMOR:
+            case ARMOR:
                 if (slotnum >= 0 && slotnum <= 3) {
                     return slotnum + 5;
                 }
                 break;
-            case ContainerId.OFFHAND:
+            case OFFHAND:
                 return 45;
-            case ContainerId.UI:
+            case CRAFTING_INPUT:
                 if (slotnum >= 28 && 31 >= slotnum) {
                     return slotnum - 27;
                 }
                 break;
-            case ContainerId.CRAFTING_RESULT:
+            case CREATIVE_OUTPUT:
                 return 0;
         }
         return slotnum;
@@ -169,7 +168,26 @@ public class PlayerInventoryTranslator extends InventoryTranslator {
 
     @Override
     public int javaSlotToBedrock(int slot) {
-        return slot;
+        return -1;
+    }
+
+    @Override
+    public BedrockContainerSlot javaSlotToBedrockContainer(int slot) {
+        if (slot >= 36 && slot <= 44) {
+            return new BedrockContainerSlot(ContainerSlotType.HOTBAR, slot - 36);
+        } else if (slot >= 9 && slot <= 35) {
+            return new BedrockContainerSlot(ContainerSlotType.INVENTORY, slot);
+        } else if (slot >= 5 && slot <= 8) {
+            return new BedrockContainerSlot(ContainerSlotType.ARMOR, slot - 5);
+        } else if (slot == 45) {
+            return new BedrockContainerSlot(ContainerSlotType.OFFHAND, 1);
+        } else if (slot >= 1 && slot <= 4) {
+            return new BedrockContainerSlot(ContainerSlotType.CRAFTING_INPUT, slot + 27);
+        } else if (slot == 0) {
+            return new BedrockContainerSlot(ContainerSlotType.CRAFTING_OUTPUT, 0);
+        } else {
+            throw new IllegalArgumentException("Unknown bedrock slot");
+        }
     }
 
     @Override
@@ -180,52 +198,13 @@ public class PlayerInventoryTranslator extends InventoryTranslator {
     }
 
     @Override
-    public void translateActions(GeyserSession session, Inventory inventory, List<InventoryActionData> actions) {
-        if (session.getGameMode() == GameMode.CREATIVE) {
-            //crafting grid is not visible in creative mode in java edition
-            for (InventoryActionData action : actions) {
-                if (action.getSource().getContainerId() == ContainerId.UI && (action.getSlot() >= 28 && 31 >= action.getSlot())) {
-                    updateInventory(session, inventory);
-                    InventoryUtils.updateCursor(session);
-                    return;
-                }
+    public void translateRequests(GeyserSession session, Inventory inventory, List<ItemStackRequestPacket.Request> requests) {
+        super.translateRequests(session, inventory, requests);
     }
 
-            ItemStack javaItem;
-            for (InventoryActionData action : actions) {
-                switch (action.getSource().getContainerId()) {
-                    case ContainerId.INVENTORY:
-                    case ContainerId.ARMOR:
-                    case ContainerId.OFFHAND:
-                        int javaSlot = bedrockSlotToJava(action);
-                        if (action.getToItem().getId() == 0) {
-                            javaItem = new ItemStack(-1, 0, null);
-                        } else {
-                            javaItem = ItemTranslator.translateToJava(action.getToItem());
-                        }
-                        ClientCreativeInventoryActionPacket creativePacket = new ClientCreativeInventoryActionPacket(javaSlot, javaItem);
-                        session.sendDownstreamPacket(creativePacket);
-                        inventory.setItem(javaSlot, javaItem);
-                        break;
-                    case ContainerId.UI:
-                        if (action.getSlot() == 0) {
-                            session.getInventory().setCursor(ItemTranslator.translateToJava(action.getToItem()));
-                        }
-                        break;
-                    case ContainerId.NONE:
-                        if (action.getSource().getType() == InventorySource.Type.WORLD_INTERACTION
-                                && action.getSource().getFlag() == InventorySource.Flag.DROP_ITEM) {
-                            javaItem = ItemTranslator.translateToJava(action.getToItem());
-                            ClientCreativeInventoryActionPacket creativeDropPacket = new ClientCreativeInventoryActionPacket(-1, javaItem);
-                            session.sendDownstreamPacket(creativeDropPacket);
-                        }
-                        break;
-                }
-            }
-            return;
-        }
-
-        InventoryActionDataTranslator.translate(this, session, inventory, actions);
+    @Override
+    public Inventory createInventory(String name, int windowId, WindowType windowType, PlayerInventory playerInventory) {
+        throw new UnsupportedOperationException();
     }
 
     @Override

connector/src/main/java/org/geysermc/connector/network/translators/inventory/SmithingInventoryTranslator.java

@@ -1,69 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory;
-
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerId;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
-import org.geysermc.connector.network.translators.inventory.updater.CursorInventoryUpdater;
-
-public class SmithingInventoryTranslator extends BlockInventoryTranslator {
-
-    public SmithingInventoryTranslator() {
-        super(3, "minecraft:smithing_table", ContainerType.SMITHING_TABLE, new CursorInventoryUpdater());
-    }
-
-    @Override
-    public int bedrockSlotToJava(InventoryActionData action) {
-        final int slot = super.bedrockSlotToJava(action);
-        if (action.getSource().getContainerId() == ContainerId.UI) {
-            switch (slot) {
-                case 51:
-                    return 0;
-                case 52:
-                    return 1;
-                case 50:
-                    return 2;
-                default:
-                    return slot;
-            }
-        } return slot;
-    }
-
-    @Override
-    public int javaSlotToBedrock(int slot) {
-        switch (slot) {
-            case 0:
-                return 51;
-            case 1:
-                return 52;
-            case 2:
-                return 50;
-        }
-        return super.javaSlotToBedrock(slot);
-    }
-
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/action/ClickPlan.java

@@ -1,125 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory.action;
-
-import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
-import com.github.steveice10.mc.protocol.data.game.window.WindowAction;
-import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientConfirmTransactionPacket;
-import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientWindowActionPacket;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.inventory.PlayerInventory;
-import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
-import org.geysermc.connector.network.translators.inventory.SlotType;
-import org.geysermc.connector.utils.InventoryUtils;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.ListIterator;
-
-class ClickPlan {
-    private final List<ClickAction> plan = new ArrayList<>();
-
-    public void add(Click click, int slot) {
-        plan.add(new ClickAction(click, slot));
-    }
-
-    public void execute(GeyserSession session, InventoryTranslator translator, Inventory inventory, boolean refresh) {
-        PlayerInventory playerInventory = session.getInventory();
-        ListIterator<ClickAction> planIter = plan.listIterator();
-        while (planIter.hasNext()) {
-            final ClickAction action = planIter.next();
-            final ItemStack cursorItem = playerInventory.getCursor();
-            final ItemStack clickedItem = inventory.getItem(action.slot);
-            final short actionId = (short) inventory.getTransactionId().getAndIncrement();
-
-            //TODO: stop relying on refreshing the inventory for crafting to work properly
-            if (translator.getSlotType(action.slot) != SlotType.NORMAL)
-                refresh = true;
-
-            ClientWindowActionPacket clickPacket = new ClientWindowActionPacket(inventory.getId(),
-                    actionId, action.slot, !planIter.hasNext() && refresh ? InventoryUtils.REFRESH_ITEM : clickedItem,
-                    WindowAction.CLICK_ITEM, action.click.actionParam);
-
-            if (translator.getSlotType(action.slot) == SlotType.OUTPUT) {
-                if (cursorItem == null && clickedItem != null) {
-                    playerInventory.setCursor(clickedItem);
-                } else if (InventoryUtils.canStack(cursorItem, clickedItem)) {
-                    playerInventory.setCursor(new ItemStack(cursorItem.getId(),
-                            cursorItem.getAmount() + clickedItem.getAmount(), cursorItem.getNbt()));
-                }
-            } else {
-                switch (action.click) {
-                    case LEFT:
-                        if (!InventoryUtils.canStack(cursorItem, clickedItem)) {
-                            playerInventory.setCursor(clickedItem);
-                            inventory.setItem(action.slot, cursorItem);
-                        } else {
-                            playerInventory.setCursor(null);
-                            inventory.setItem(action.slot, new ItemStack(clickedItem.getId(),
-                                    clickedItem.getAmount() + cursorItem.getAmount(), clickedItem.getNbt()));
-                        }
-                        break;
-                    case RIGHT:
-                        if (cursorItem == null && clickedItem != null) {
-                            ItemStack halfItem = new ItemStack(clickedItem.getId(),
-                                    clickedItem.getAmount() / 2, clickedItem.getNbt());
-                            inventory.setItem(action.slot, halfItem);
-                            playerInventory.setCursor(new ItemStack(clickedItem.getId(),
-                                    clickedItem.getAmount() - halfItem.getAmount(), clickedItem.getNbt()));
-                        } else if (cursorItem != null && clickedItem == null) {
-                            playerInventory.setCursor(new ItemStack(cursorItem.getId(),
-                                    cursorItem.getAmount() - 1, cursorItem.getNbt()));
-                            inventory.setItem(action.slot, new ItemStack(cursorItem.getId(),
-                                    1, cursorItem.getNbt()));
-                        } else if (InventoryUtils.canStack(cursorItem, clickedItem)) {
-                            playerInventory.setCursor(new ItemStack(cursorItem.getId(),
-                                    cursorItem.getAmount() - 1, cursorItem.getNbt()));
-                            inventory.setItem(action.slot, new ItemStack(clickedItem.getId(),
-                                    clickedItem.getAmount() + 1, clickedItem.getNbt()));
-                        }
-                        break;
-                }
-            }
-            session.sendDownstreamPacket(clickPacket);
-            session.sendDownstreamPacket(new ClientConfirmTransactionPacket(inventory.getId(), actionId, true));
-        }
-
-        /*if (refresh) {
-            translator.updateInventory(session, inventory);
-            InventoryUtils.updateCursor(session);
-        }*/
-    }
-
-    private static class ClickAction {
-        final Click click;
-        final int slot;
-        ClickAction(Click click, int slot) {
-            this.click = click;
-            this.slot = slot;
-        }
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/action/InventoryActionDataTranslator.java

@@ -1,338 +0,0 @@
-/*
- * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @author GeyserMC
- * @link https://github.com/GeyserMC/Geyser
- */
-
-package org.geysermc.connector.network.translators.inventory.action;
-
-import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
-import com.github.steveice10.mc.protocol.data.game.entity.metadata.Position;
-import com.github.steveice10.mc.protocol.data.game.entity.player.PlayerAction;
-import com.github.steveice10.mc.protocol.data.game.window.*;
-import com.github.steveice10.mc.protocol.data.game.world.block.BlockFace;
-import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlayerActionPacket;
-import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientWindowActionPacket;
-import com.nukkitx.protocol.bedrock.data.inventory.ContainerId;
-import com.nukkitx.protocol.bedrock.data.inventory.InventoryActionData;
-import com.nukkitx.protocol.bedrock.data.inventory.InventorySource;
-import com.nukkitx.protocol.bedrock.data.inventory.ItemData;
-import org.geysermc.connector.inventory.Inventory;
-import org.geysermc.connector.network.session.GeyserSession;
-import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
-import org.geysermc.connector.network.translators.inventory.SlotType;
-import org.geysermc.connector.network.translators.item.ItemTranslator;
-import org.geysermc.connector.utils.InventoryUtils;
-
-import java.util.*;
-
-public class InventoryActionDataTranslator {
-    public static void translate(InventoryTranslator translator, GeyserSession session, Inventory inventory, List<InventoryActionData> actions) {
-        if (actions.size() != 2)
-            return;
-
-        InventoryActionData worldAction = null;
-        InventoryActionData cursorAction = null;
-        InventoryActionData containerAction = null;
-        boolean refresh = false;
-        for (InventoryActionData action : actions) {
-            if (action.getSource().getContainerId() == ContainerId.CRAFTING_USE_INGREDIENT) {
-                return;
-            } else if (action.getSource().getType() == InventorySource.Type.WORLD_INTERACTION) {
-                worldAction = action;
-            } else if (action.getSource().getContainerId() == ContainerId.UI && action.getSlot() == 0) {
-                cursorAction = action;
-                ItemData translatedCursor = ItemTranslator.translateToBedrock(session, session.getInventory().getCursor());
-                if (!translatedCursor.equals(action.getFromItem())) {
-                    refresh = true;
-                }
-            } else {
-                containerAction = action;
-                ItemData translatedItem = ItemTranslator.translateToBedrock(session, inventory.getItem(translator.bedrockSlotToJava(action)));
-                if (!translatedItem.equals(action.getFromItem())) {
-                    refresh = true;
-                }
-            }
-        }
-
-        final int craftSlot = session.getCraftSlot();
-        session.setCraftSlot(0);
-
-        if (worldAction != null) {
-            InventoryActionData sourceAction;
-            if (cursorAction != null) {
-                sourceAction = cursorAction;
-            } else {
-                sourceAction = containerAction;
-            }
-
-            if (sourceAction != null) {
-                if (worldAction.getSource().getFlag() == InventorySource.Flag.DROP_ITEM) {
-                    //quick dropping from hotbar?
-                    if (session.getInventoryCache().getOpenInventory() == null && sourceAction.getSource().getContainerId() == ContainerId.INVENTORY) {
-                        int heldSlot = session.getInventory().getHeldItemSlot();
-                        if (sourceAction.getSlot() == heldSlot) {
-                            ClientPlayerActionPacket actionPacket = new ClientPlayerActionPacket(
-                                    sourceAction.getToItem().getCount() == 0 ? PlayerAction.DROP_ITEM_STACK : PlayerAction.DROP_ITEM,
-                                    new Position(0, 0, 0), BlockFace.DOWN);
-                            session.sendDownstreamPacket(actionPacket);
-                            ItemStack item = session.getInventory().getItem(heldSlot);
-                            if (item != null) {
-                                session.getInventory().setItem(heldSlot, new ItemStack(item.getId(), item.getAmount() - 1, item.getNbt()));
-                            }
-                            return;
-                        }
-                    }
-                    int dropAmount = sourceAction.getFromItem().getCount() - sourceAction.getToItem().getCount();
-                    if (sourceAction != cursorAction) { //dropping directly from inventory
-                        int javaSlot = translator.bedrockSlotToJava(sourceAction);
-                        if (dropAmount == sourceAction.getFromItem().getCount()) {
-                            ClientWindowActionPacket dropPacket = new ClientWindowActionPacket(inventory.getId(),
-                                    inventory.getTransactionId().getAndIncrement(),
-                                    javaSlot, null, WindowAction.DROP_ITEM,
-                                    DropItemParam.DROP_SELECTED_STACK);
-                            session.sendDownstreamPacket(dropPacket);
-                        } else {
-                            for (int i = 0; i < dropAmount; i++) {
-                                ClientWindowActionPacket dropPacket = new ClientWindowActionPacket(inventory.getId(),
-                                        inventory.getTransactionId().getAndIncrement(),
-                                        javaSlot, null, WindowAction.DROP_ITEM,
-                                        DropItemParam.DROP_FROM_SELECTED);
-                                session.sendDownstreamPacket(dropPacket);
-                            }
-                        }
-                        ItemStack item = inventory.getItem(javaSlot);
-                        if (item != null) {
-                            inventory.setItem(javaSlot, new ItemStack(item.getId(), item.getAmount() - dropAmount, item.getNbt()));
-                        }
-                        return;
-                    } else { //clicking outside of inventory
-                        ClientWindowActionPacket dropPacket = new ClientWindowActionPacket(inventory.getId(), inventory.getTransactionId().getAndIncrement(),
-                                -999, null, WindowAction.CLICK_ITEM,
-                                dropAmount > 1 ? ClickItemParam.LEFT_CLICK : ClickItemParam.RIGHT_CLICK);
-                        session.sendDownstreamPacket(dropPacket);
-                        ItemStack cursor = session.getInventory().getCursor();
-                        if (cursor != null) {
-                            session.getInventory().setCursor(new ItemStack(cursor.getId(), dropAmount > 1 ? 0 : cursor.getAmount() - 1, cursor.getNbt()));
-                        }
-                        return;
-                    }
-                }
-            }
-        } else if (cursorAction != null && containerAction != null) {
-            //left/right click
-            ClickPlan plan = new ClickPlan();
-            int javaSlot = translator.bedrockSlotToJava(containerAction);
-            if (cursorAction.getFromItem().equals(containerAction.getToItem())
-                    && containerAction.getFromItem().equals(cursorAction.getToItem())
-                    && !InventoryUtils.canStack(cursorAction.getFromItem(), containerAction.getFromItem())) { //simple swap
-                plan.add(Click.LEFT, javaSlot);
-            } else if (cursorAction.getFromItem().getCount() > cursorAction.getToItem().getCount()) { //release
-                if (cursorAction.getToItem().getCount() == 0) {
-                    plan.add(Click.LEFT, javaSlot);
-                } else {
-                    int difference = cursorAction.getFromItem().getCount() - cursorAction.getToItem().getCount();
-                    for (int i = 0; i < difference; i++) {
-                        plan.add(Click.RIGHT, javaSlot);
-                    }
-                }
-            } else { //pickup
-                if (cursorAction.getFromItem().getCount() == 0) {
-                    if (containerAction.getToItem().getCount() == 0) { //pickup all
-                        plan.add(Click.LEFT, javaSlot);
-                    } else { //pickup some
-                        if (translator.getSlotType(javaSlot) == SlotType.FURNACE_OUTPUT
-                                || containerAction.getToItem().getCount() == containerAction.getFromItem().getCount() / 2) { //right click
-                            plan.add(Click.RIGHT, javaSlot);
-                        } else {
-                            plan.add(Click.LEFT, javaSlot);
-                            int difference = containerAction.getFromItem().getCount() - cursorAction.getToItem().getCount();
-                            for (int i = 0; i < difference; i++) {
-                                plan.add(Click.RIGHT, javaSlot);
-                            }
-                        }
-                    }
-                } else { //pickup into non-empty cursor
-                    if (translator.getSlotType(javaSlot) == SlotType.FURNACE_OUTPUT) {
-                        if (containerAction.getToItem().getCount() == 0) {
-                            plan.add(Click.LEFT, javaSlot);
-                        } else {
-                            ClientWindowActionPacket shiftClickPacket = new ClientWindowActionPacket(inventory.getId(),
-                                    inventory.getTransactionId().getAndIncrement(),
-                                    javaSlot, InventoryUtils.REFRESH_ITEM, WindowAction.SHIFT_CLICK_ITEM,
-                                    ShiftClickItemParam.LEFT_CLICK);
-                            session.sendDownstreamPacket(shiftClickPacket);
-                            translator.updateInventory(session, inventory);
-                            return;
-                        }
-                    } else if (translator.getSlotType(javaSlot) == SlotType.OUTPUT) {
-                        plan.add(Click.LEFT, javaSlot);
-                    } else {
-                        int cursorSlot = findTempSlot(inventory, session.getInventory().getCursor(), Collections.singletonList(javaSlot), false);
-                        if (cursorSlot != -1) {
-                            plan.add(Click.LEFT, cursorSlot);
-                        } else {
-                            translator.updateInventory(session, inventory);
-                            InventoryUtils.updateCursor(session);
-                            return;
-                        }
-                        plan.add(Click.LEFT, javaSlot);
-                        int difference = cursorAction.getToItem().getCount() - cursorAction.getFromItem().getCount();
-                        for (int i = 0; i < difference; i++) {
-                            plan.add(Click.RIGHT, cursorSlot);
-                        }
-                        plan.add(Click.LEFT, javaSlot);
-                        plan.add(Click.LEFT, cursorSlot);
-                    }
-                }
-            }
-            plan.execute(session, translator, inventory, refresh);
-            return;
-        } else {
-            ClickPlan plan = new ClickPlan();
-            InventoryActionData fromAction;
-            InventoryActionData toAction;
-            if (actions.get(0).getFromItem().getCount() >= actions.get(0).getToItem().getCount()) {
-                fromAction = actions.get(0);
-                toAction = actions.get(1);
-            } else {
-                fromAction = actions.get(1);
-                toAction = actions.get(0);
-            }
-            int fromSlot = translator.bedrockSlotToJava(fromAction);
-            int toSlot = translator.bedrockSlotToJava(toAction);
-
-            if (translator.getSlotType(fromSlot) == SlotType.OUTPUT) {
-                if ((craftSlot != 0 && craftSlot != -2) && (inventory.getItem(toSlot) == null
-                        || InventoryUtils.canStack(session.getInventory().getCursor(), inventory.getItem(toSlot)))) {
-                    if (fromAction.getToItem().getCount() == 0) {
-                        refresh = true;
-                        plan.add(Click.LEFT, toSlot);
-                        if (craftSlot != -1) {
-                            plan.add(Click.LEFT, craftSlot);
-                        }
-                    } else {
-                        int difference = toAction.getToItem().getCount() - toAction.getFromItem().getCount();
-                        for (int i = 0; i < difference; i++) {
-                            plan.add(Click.RIGHT, toSlot);
-                        }
-                        session.setCraftSlot(craftSlot);
-                    }
-                    plan.execute(session, translator, inventory, refresh);
-                    return;
-                } else {
-                    session.setCraftSlot(-2);
-                }
-            }
-
-            int cursorSlot = -1;
-            if (session.getInventory().getCursor() != null) { //move cursor contents to a temporary slot
-                cursorSlot = findTempSlot(inventory,
-                        session.getInventory().getCursor(),
-                        Arrays.asList(fromSlot, toSlot),
-                        translator.getSlotType(fromSlot) == SlotType.OUTPUT);
-                if (cursorSlot != -1) {
-                    plan.add(Click.LEFT, cursorSlot);
-                } else {
-                    translator.updateInventory(session, inventory);
-                    InventoryUtils.updateCursor(session);
-                    return;
-                }
-            }
-            if ((fromAction.getFromItem().equals(toAction.getToItem()) && !InventoryUtils.canStack(fromAction.getFromItem(), toAction.getFromItem()))
-                    || fromAction.getToItem().getId() == 0) { //slot swap
-                plan.add(Click.LEFT, fromSlot);
-                plan.add(Click.LEFT, toSlot);
-                if (fromAction.getToItem().getId() != 0) {
-                    plan.add(Click.LEFT, fromSlot);
-                }
-            } else if (InventoryUtils.canStack(fromAction.getFromItem(), toAction.getToItem())) { //partial item move
-                if (translator.getSlotType(fromSlot) == SlotType.FURNACE_OUTPUT) {
-                    ClientWindowActionPacket shiftClickPacket = new ClientWindowActionPacket(inventory.getId(),
-                            inventory.getTransactionId().getAndIncrement(),
-                            fromSlot, InventoryUtils.REFRESH_ITEM, WindowAction.SHIFT_CLICK_ITEM,
-                            ShiftClickItemParam.LEFT_CLICK);
-                    session.sendDownstreamPacket(shiftClickPacket);
-                    translator.updateInventory(session, inventory);
-                    return;
-                } else if (translator.getSlotType(fromSlot) == SlotType.OUTPUT) {
-                    session.setCraftSlot(cursorSlot);
-                    plan.add(Click.LEFT, fromSlot);
-                    int difference = toAction.getToItem().getCount() - toAction.getFromItem().getCount();
-                    for (int i = 0; i < difference; i++) {
-                        plan.add(Click.RIGHT, toSlot);
-                    }
-                    //client will send additional packets later to finish transferring crafting output
-                    //translator will know how to handle this using the craftSlot variable
-                } else {
-                    plan.add(Click.LEFT, fromSlot);
-                    int difference = toAction.getToItem().getCount() - toAction.getFromItem().getCount();
-                    for (int i = 0; i < difference; i++) {
-                        plan.add(Click.RIGHT, toSlot);
-                    }
-                    plan.add(Click.LEFT, fromSlot);
-                }
-            }
-            if (cursorSlot != -1) {
-                plan.add(Click.LEFT, cursorSlot);
-            }
-            plan.execute(session, translator, inventory, refresh);
-            return;
-        }
-
-        translator.updateInventory(session, inventory);
-        InventoryUtils.updateCursor(session);
-    }
-
-    private static int findTempSlot(Inventory inventory, ItemStack item, List<Integer> slotBlacklist, boolean emptyOnly) {
-        /*try and find a slot that can temporarily store the given item
-        only look in the main inventory and hotbar
-        only slots that are empty or contain a different type of item are valid*/
-        int offset = inventory.getId() == 0 ? 1 : 0; //offhand is not a viable slot (some servers disable it)
-        List<ItemStack> itemBlacklist = new ArrayList<>(slotBlacklist.size() + 1);
-        itemBlacklist.add(item);
-        for (int slot : slotBlacklist) {
-            ItemStack blacklistItem = inventory.getItem(slot);
-            if (blacklistItem != null)
-                itemBlacklist.add(blacklistItem);
-        }
-        for (int i = inventory.getSize() - (36 + offset); i < inventory.getSize() - offset; i++) {
-            ItemStack testItem = inventory.getItem(i);
-            boolean acceptable = true;
-            if (testItem != null) {
-                if (emptyOnly) {
-                    continue;
-                }
-                for (ItemStack blacklistItem : itemBlacklist) {
-                    if (InventoryUtils.canStack(testItem, blacklistItem)) {
-                        acceptable = false;
-                        break;
-                    }
-                }
-            }
-            if (acceptable && !slotBlacklist.contains(i))
-                return i;
-        }
-        //could not find a viable temp slot
-        return -1;
-    }
-}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/click/Click.java

@@ -23,16 +23,25 @@
  * @link https://github.com/GeyserMC/Geyser
  */
 
-package org.geysermc.connector.network.translators.inventory.action;
+package org.geysermc.connector.network.translators.inventory.click;
 
 import com.github.steveice10.mc.protocol.data.game.window.ClickItemParam;
+import com.github.steveice10.mc.protocol.data.game.window.DropItemParam;
+import com.github.steveice10.mc.protocol.data.game.window.WindowAction;
 import com.github.steveice10.mc.protocol.data.game.window.WindowActionParam;
 import lombok.AllArgsConstructor;
 
 @AllArgsConstructor
-enum Click {
-    LEFT(ClickItemParam.LEFT_CLICK),
-    RIGHT(ClickItemParam.RIGHT_CLICK);
+public enum Click {
+    LEFT(WindowAction.CLICK_ITEM, ClickItemParam.LEFT_CLICK),
+    RIGHT(WindowAction.CLICK_ITEM, ClickItemParam.RIGHT_CLICK),
+    DROP_ONE(WindowAction.DROP_ITEM, DropItemParam.DROP_FROM_SELECTED),
+    DROP_ALL(WindowAction.DROP_ITEM, DropItemParam.DROP_SELECTED_STACK),
+    LEFT_OUTSIDE(WindowAction.CLICK_ITEM, ClickItemParam.LEFT_CLICK),
+    RIGHT_OUTSIDE(WindowAction.CLICK_ITEM, ClickItemParam.RIGHT_CLICK);
 
+    public static final int OUTSIDE_SLOT = -999;
+
+    public final WindowAction windowAction;
     public final WindowActionParam actionParam;
 }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/click/ClickPlan.java

@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.connector.network.translators.inventory.click;
+
+import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
+import com.github.steveice10.mc.protocol.data.game.window.WindowAction;
+import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientConfirmTransactionPacket;
+import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientWindowActionPacket;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import lombok.Value;
+import org.geysermc.connector.inventory.GeyserItemStack;
+import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.network.session.GeyserSession;
+import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
+import org.geysermc.connector.network.translators.inventory.SlotType;
+import org.geysermc.connector.utils.InventoryUtils;
+
+import java.util.*;
+
+public class ClickPlan {
+    private final List<ClickAction> plan = new ArrayList<>();
+    private final Int2ObjectMap<GeyserItemStack> simulatedItems;
+    private GeyserItemStack simulatedCursor;
+    private boolean simulating;
+
+    private final GeyserSession session;
+    private final InventoryTranslator translator;
+    private final Inventory inventory;
+
+    public ClickPlan(GeyserSession session, InventoryTranslator translator, Inventory inventory) {
+        this.session = session;
+        this.translator = translator;
+        this.inventory = inventory;
+
+        this.simulatedItems = new Int2ObjectOpenHashMap<>(inventory.getSize());
+        this.simulatedCursor = session.getPlayerInventory().getCursor().copy();
+        this.simulating = true;
+    }
+
+    public void add(Click click, int slot) {
+        if (!simulating)
+            throw new UnsupportedOperationException("ClickPlan already executed");
+
+        if (click == Click.LEFT_OUTSIDE || click == Click.RIGHT_OUTSIDE) {
+            slot = Click.OUTSIDE_SLOT;
+        }
+
+        ClickAction action = new ClickAction(click, slot);
+        plan.add(action);
+        simulateAction(action);
+    }
+
+    public void execute(boolean refresh) {
+        simulating = false;
+        ListIterator<ClickAction> planIter = plan.listIterator();
+        while (planIter.hasNext()) {
+            ClickAction action = planIter.next();
+
+            if (action.slot != Click.OUTSIDE_SLOT && translator.getSlotType(action.slot) != SlotType.NORMAL) {
+                refresh = true;
+            }
+
+            ItemStack clickedItemStack;
+            if (!planIter.hasNext() && refresh) {
+                clickedItemStack = InventoryUtils.REFRESH_ITEM;
+            } else if (action.click.windowAction == WindowAction.DROP_ITEM || action.slot == Click.OUTSIDE_SLOT) {
+                clickedItemStack = null;
+            } else {
+                clickedItemStack = inventory.getItem(action.slot).getItemStack();
+            }
+
+            short actionId = inventory.getNextTransactionId();
+            ClientWindowActionPacket clickPacket = new ClientWindowActionPacket(
+                    inventory.getId(),
+                    actionId,
+                    action.slot,
+                    clickedItemStack,
+                    action.click.windowAction,
+                    action.click.actionParam
+            );
+
+            simulateAction(action);
+
+            session.sendDownstreamPacket(clickPacket);
+            if (clickedItemStack == InventoryUtils.REFRESH_ITEM) {
+                session.sendDownstreamPacket(new ClientConfirmTransactionPacket(inventory.getId(), actionId, true));
+            }
+            System.out.println(clickPacket);
+        }
+    }
+
+    public GeyserItemStack getItem(int slot) {
+        return simulatedItems.computeIfAbsent(slot, k -> inventory.getItem(slot).copy());
+    }
+
+    public GeyserItemStack getCursor() {
+        return simulatedCursor;
+    }
+
+    private void setItem(int slot, GeyserItemStack item) {
+        if (simulating) {
+            simulatedItems.put(slot, item);
+        } else {
+            inventory.setItem(slot, item);
+        }
+    }
+
+    private void setCursor(GeyserItemStack item) {
+        if (simulating) {
+            simulatedCursor = item;
+        } else {
+            session.getPlayerInventory().setCursor(item);
+        }
+    }
+
+    private void simulateAction(ClickAction action) {
+        GeyserItemStack cursor = simulating ? getCursor() : session.getPlayerInventory().getCursor();
+        switch (action.click) {
+            case LEFT_OUTSIDE:
+                setCursor(GeyserItemStack.EMPTY);
+                return;
+            case RIGHT_OUTSIDE:
+                if (!cursor.isEmpty()) {
+                    cursor.sub(1);
+                }
+                return;
+        }
+
+        GeyserItemStack clicked = simulating ? getItem(action.slot) : inventory.getItem(action.slot);
+        if (translator.getSlotType(action.slot) == SlotType.OUTPUT) {
+            if (cursor.isEmpty() && !clicked.isEmpty()) {
+                setCursor(clicked.copy());
+            } else if (InventoryUtils.canStack(cursor, clicked)) {
+                cursor.add(clicked.getAmount());
+            }
+        } else {
+            switch (action.click) {
+                case LEFT:
+                    if (!InventoryUtils.canStack(cursor, clicked)) {
+                        setCursor(clicked);
+                        setItem(action.slot, cursor);
+                    } else {
+                        setCursor(GeyserItemStack.EMPTY);
+                        clicked.add(cursor.getAmount());
+                    }
+                    break;
+                case RIGHT:
+                    if (cursor.isEmpty() && !clicked.isEmpty()) {
+                        int half = clicked.getAmount() / 2; //smaller half
+                        setCursor(clicked.copy(clicked.getAmount() - half)); //larger half
+                        clicked.setAmount(half);
+                    } else if (!cursor.isEmpty() && clicked.isEmpty()) {
+                        cursor.sub(1);
+                        setItem(action.slot, cursor.copy(1));
+                    } else if (InventoryUtils.canStack(cursor, clicked)) {
+                        cursor.sub(1);
+                        clicked.add(1);
+                    }
+                    break;
+                case DROP_ONE:
+                    if (!clicked.isEmpty()) {
+                        clicked.sub(1);
+                    }
+                    break;
+                case DROP_ALL:
+                    setItem(action.slot, GeyserItemStack.EMPTY);
+                    break;
+            }
+        }
+    }
+
+    public Set<Integer> getAffectedSlots() {
+        Set<Integer> affectedSlots = new HashSet<>();
+        for (ClickAction action : plan) {
+            if (translator.getSlotType(action.slot) == SlotType.NORMAL && action.slot != Click.OUTSIDE_SLOT) {
+                affectedSlots.add(action.slot);
+            }
+        }
+        return affectedSlots;
+    }
+
+    @Value
+    private static class ClickAction {
+        Click click;
+        int slot;
+    }
+}

connector/src/main/java/org/geysermc/connector/network/translators/inventory/updater/ChestInventoryUpdater.java

@@ -49,7 +49,7 @@ public class ChestInventoryUpdater extends InventoryUpdater {
         ItemData[] bedrockItems = new ItemData[paddedSize];
         for (int i = 0; i < bedrockItems.length; i++) {
             if (i < translator.size) {
-                bedrockItems[i] = ItemTranslator.translateToBedrock(session, inventory.getItem(i));
+                bedrockItems[i] = inventory.getItem(i).getItemData(session);
             } else {
                 bedrockItems[i] = UNUSUABLE_SPACE_BLOCK;
             }
@@ -69,7 +69,7 @@ public class ChestInventoryUpdater extends InventoryUpdater {
         InventorySlotPacket slotPacket = new InventorySlotPacket();
         slotPacket.setContainerId(inventory.getId());
         slotPacket.setSlot(translator.javaSlotToBedrock(javaSlot));
-        slotPacket.setItem(ItemTranslator.translateToBedrock(session, inventory.getItem(javaSlot)));
+        slotPacket.setItem(inventory.getItem(javaSlot).getItemData(session));
         session.sendUpstreamPacket(slotPacket);
         return true;
     }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/updater/ContainerInventoryUpdater.java

@@ -40,7 +40,7 @@ public class ContainerInventoryUpdater extends InventoryUpdater {
 
         ItemData[] bedrockItems = new ItemData[translator.size];
         for (int i = 0; i < bedrockItems.length; i++) {
-            bedrockItems[translator.javaSlotToBedrock(i)] = ItemTranslator.translateToBedrock(session, inventory.getItem(i));
+            bedrockItems[translator.javaSlotToBedrock(i)] = inventory.getItem(i).getItemData(session);
         }
 
         InventoryContentPacket contentPacket = new InventoryContentPacket();
@@ -57,7 +57,7 @@ public class ContainerInventoryUpdater extends InventoryUpdater {
         InventorySlotPacket slotPacket = new InventorySlotPacket();
         slotPacket.setContainerId(inventory.getId());
         slotPacket.setSlot(translator.javaSlotToBedrock(javaSlot));
-        slotPacket.setItem(ItemTranslator.translateToBedrock(session, inventory.getItem(javaSlot)));
+        slotPacket.setItem(inventory.getItem(javaSlot).getItemData(session));
         session.sendUpstreamPacket(slotPacket);
         return true;
     }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/updater/InventoryUpdater.java

@@ -39,7 +39,7 @@ public abstract class InventoryUpdater {
         ItemData[] bedrockItems = new ItemData[36];
         for (int i = 0; i < 36; i++) {
             final int offset = i < 9 ? 27 : -9;
-            bedrockItems[i] = ItemTranslator.translateToBedrock(session, inventory.getItem(translator.size + i + offset));
+            bedrockItems[i] = inventory.getItem(translator.size + i + offset).getItemData(session);
         }
         InventoryContentPacket contentPacket = new InventoryContentPacket();
         contentPacket.setContainerId(ContainerId.INVENTORY);
@@ -52,7 +52,7 @@ public abstract class InventoryUpdater {
             InventorySlotPacket slotPacket = new InventorySlotPacket();
             slotPacket.setContainerId(ContainerId.INVENTORY);
             slotPacket.setSlot(translator.javaSlotToBedrock(javaSlot));
-            slotPacket.setItem(ItemTranslator.translateToBedrock(session, inventory.getItem(javaSlot)));
+            slotPacket.setItem(inventory.getItem(javaSlot).getItemData(session));
             session.sendUpstreamPacket(slotPacket);
             return true;
         }

connector/src/main/java/org/geysermc/connector/network/translators/inventory/updater/UIInventoryUpdater.java

@@ -32,9 +32,8 @@ import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
 import org.geysermc.connector.network.translators.item.ItemTranslator;
 
-public class CursorInventoryUpdater extends InventoryUpdater {
+public class UIInventoryUpdater extends InventoryUpdater {
 
-    //TODO: Consider renaming this? Since the Protocol enum updated
     @Override
     public void updateInventory(InventoryTranslator translator, GeyserSession session, Inventory inventory) {
         super.updateInventory(translator, session, inventory);
@@ -46,7 +45,7 @@ public class CursorInventoryUpdater extends InventoryUpdater {
             InventorySlotPacket slotPacket = new InventorySlotPacket();
             slotPacket.setContainerId(ContainerId.UI);
             slotPacket.setSlot(bedrockSlot);
-            slotPacket.setItem(ItemTranslator.translateToBedrock(session, inventory.getItem(i)));
+            slotPacket.setItem(inventory.getItem(i).getItemData(session));
             session.sendUpstreamPacket(slotPacket);
         }
     }
@@ -59,7 +58,7 @@ public class CursorInventoryUpdater extends InventoryUpdater {
         InventorySlotPacket slotPacket = new InventorySlotPacket();
         slotPacket.setContainerId(ContainerId.UI);
         slotPacket.setSlot(translator.javaSlotToBedrock(javaSlot));
-        slotPacket.setItem(ItemTranslator.translateToBedrock(session, inventory.getItem(javaSlot)));
+        slotPacket.setItem(inventory.getItem(javaSlot).getItemData(session));
         session.sendUpstreamPacket(slotPacket);
         return true;
     }

connector/src/main/java/org/geysermc/connector/network/translators/item/RecipeRegistry.java

@@ -47,6 +47,8 @@ public class RecipeRegistry {
      */
     public static int LAST_RECIPE_NET_ID = 0;
 
+    //public static final Int2ObjectMap<Recipe>
+
     /**
      * A list of all possible leather armor dyeing recipes.
      * Created manually.

connector/src/main/java/org/geysermc/connector/network/translators/java/JavaDeclareRecipesTranslator.java

@@ -34,6 +34,8 @@ import com.nukkitx.nbt.NbtMap;
 import com.nukkitx.protocol.bedrock.data.inventory.CraftingData;
 import com.nukkitx.protocol.bedrock.data.inventory.ItemData;
 import com.nukkitx.protocol.bedrock.packet.CraftingDataPacket;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
 import it.unimi.dsi.fastutil.ints.IntSet;
 import lombok.AllArgsConstructor;
@@ -52,7 +54,8 @@ public class JavaDeclareRecipesTranslator extends PacketTranslator<ServerDeclare
     @Override
     public void translate(ServerDeclareRecipesPacket packet, GeyserSession session) {
         // Get the last known network ID (first used for the pregenerated recipes) and increment from there.
-        int networkId = RecipeRegistry.LAST_RECIPE_NET_ID;
+        int netId = RecipeRegistry.LAST_RECIPE_NET_ID + 1;
+        Int2ObjectMap<Recipe> recipeMap = new Int2ObjectOpenHashMap<>();
         CraftingDataPacket craftingDataPacket = new CraftingDataPacket();
         craftingDataPacket.setCleanRecipes(true);
         for (Recipe recipe : packet.getRecipes()) {
@@ -65,7 +68,8 @@ public class JavaDeclareRecipesTranslator extends PacketTranslator<ServerDeclare
                     for (ItemData[] inputs : inputCombinations) {
                         UUID uuid = UUID.randomUUID();
                         craftingDataPacket.getCraftingData().add(CraftingData.fromShapeless(uuid.toString(),
-                                inputs, new ItemData[]{output}, uuid, "crafting_table", 0, networkId++));
+                                inputs, new ItemData[]{output}, uuid, "crafting_table", 0, netId));
+                        recipeMap.put(netId++, recipe);
                     }
                     break;
                 }
@@ -78,7 +82,8 @@ public class JavaDeclareRecipesTranslator extends PacketTranslator<ServerDeclare
                         UUID uuid = UUID.randomUUID();
                         craftingDataPacket.getCraftingData().add(CraftingData.fromShaped(uuid.toString(),
                                 shapedRecipeData.getWidth(), shapedRecipeData.getHeight(), inputs,
-                                new ItemData[]{output}, uuid, "crafting_table", 0, networkId++));
+                                new ItemData[]{output}, uuid, "crafting_table", 0, netId));
+                        recipeMap.put(netId++, recipe);
                     }
                     break;
                 }
@@ -135,6 +140,7 @@ public class JavaDeclareRecipesTranslator extends PacketTranslator<ServerDeclare
         }
         craftingDataPacket.getPotionMixData().addAll(PotionMixRegistry.POTION_MIXES);
         session.sendUpstreamPacket(craftingDataPacket);
+        session.setCraftingRecipes(recipeMap);
     }
 
     //TODO: rewrite

connector/src/main/java/org/geysermc/connector/network/translators/java/JavaRespawnTranslator.java

@@ -50,7 +50,7 @@ public class JavaRespawnTranslator extends PacketTranslator<ServerRespawnPacket>
         // Max health must be divisible by two in bedrock
         entity.getAttributes().put(AttributeType.HEALTH, AttributeType.HEALTH.getAttribute(maxHealth, (maxHealth % 2 == 1 ? maxHealth + 1 : maxHealth)));
 
-        session.getInventoryCache().setOpenInventory(null);
+        session.setOpenInventory(null);
 
         SetPlayerGameTypePacket playerGameTypePacket = new SetPlayerGameTypePacket();
         playerGameTypePacket.setGamemode(packet.getGamemode().ordinal());

connector/src/main/java/org/geysermc/connector/network/translators/java/entity/player/JavaPlayerActionAckTranslator.java

@@ -32,6 +32,7 @@ import com.github.steveice10.opennbt.tag.builtin.*;
 import com.nukkitx.math.vector.Vector3f;
 import com.nukkitx.protocol.bedrock.data.LevelEventType;
 import com.nukkitx.protocol.bedrock.packet.LevelEventPacket;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
@@ -71,15 +72,9 @@ public class JavaPlayerActionAckTranslator extends PacketTranslator<ServerPlayer
                         packet.getPosition().getY(),
                         packet.getPosition().getZ()
                 ));
-                PlayerInventory inventory = session.getInventory();
-                ItemStack item = inventory.getItemInHand();
-                ItemEntry itemEntry = null;
-                CompoundTag nbtData = new CompoundTag("");
-                if (item != null) {
-                    itemEntry = ItemRegistry.getItem(item);
-                    nbtData = item.getNbt();
-                }
-                double breakTime = Math.ceil(BlockUtils.getBreakTime(blockHardness, packet.getNewState(), itemEntry, nbtData, session) * 20);
+                PlayerInventory inventory = session.getPlayerInventory();
+                GeyserItemStack item = inventory.getItemInHand();
+                double breakTime = Math.ceil(BlockUtils.getBreakTime(blockHardness, packet.getNewState(), item.getItemEntry(), item.getNbt(), session) * 20);
                 levelEvent.setData((int) (65535 / breakTime));
                 session.setBreakingBlock(packet.getNewState());
                 session.sendUpstreamPacket(levelEvent);

connector/src/main/java/org/geysermc/connector/network/translators/java/entity/player/JavaPlayerChangeHeldItemTranslator.java

@@ -36,12 +36,14 @@ public class JavaPlayerChangeHeldItemTranslator extends PacketTranslator<ServerP
 
     @Override
     public void translate(ServerPlayerChangeHeldItemPacket packet, GeyserSession session) {
+        session.addInventoryTask(() -> {
             PlayerHotbarPacket hotbarPacket = new PlayerHotbarPacket();
             hotbarPacket.setContainerId(0);
             hotbarPacket.setSelectedHotbarSlot(packet.getSlot());
             hotbarPacket.setSelectHotbarSlot(true);
             session.sendUpstreamPacket(hotbarPacket);
 
-        session.getInventory().setHeldItemSlot(packet.getSlot());
+            session.getPlayerInventory().setHeldItemSlot(packet.getSlot());
+        });
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/java/window/JavaCloseWindowTranslator.java

@@ -26,6 +26,7 @@
 package org.geysermc.connector.network.translators.java.window;
 
 import com.github.steveice10.mc.protocol.packet.ingame.server.window.ServerCloseWindowPacket;
+import org.geysermc.connector.inventory.Inventory;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
 import org.geysermc.connector.network.translators.Translator;
@@ -36,7 +37,8 @@ public class JavaCloseWindowTranslator extends PacketTranslator<ServerCloseWindo
 
     @Override
     public void translate(ServerCloseWindowPacket packet, GeyserSession session) {
-        InventoryUtils.closeWindow(session, packet.getWindowId());
+        session.addInventoryTask(() -> {
             InventoryUtils.closeInventory(session, packet.getWindowId());
+        });
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/java/window/JavaConfirmTransactionTranslator.java

@@ -27,6 +27,7 @@ package org.geysermc.connector.network.translators.java.window;
 
 import com.github.steveice10.mc.protocol.packet.ingame.client.window.ClientConfirmTransactionPacket;
 import com.github.steveice10.mc.protocol.packet.ingame.server.window.ServerConfirmTransactionPacket;
+import org.geysermc.connector.inventory.Inventory;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
 import org.geysermc.connector.network.translators.Translator;
@@ -36,9 +37,11 @@ public class JavaConfirmTransactionTranslator extends PacketTranslator<ServerCon
 
     @Override
     public void translate(ServerConfirmTransactionPacket packet, GeyserSession session) {
+        session.addInventoryTask(() -> {
             if (!packet.isAccepted()) {
                 ClientConfirmTransactionPacket confirmPacket = new ClientConfirmTransactionPacket(packet.getWindowId(), packet.getActionId(), true);
                 session.sendDownstreamPacket(confirmPacket);
             }
+        });
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/java/window/JavaOpenWindowTranslator.java

@@ -41,14 +41,16 @@ public class JavaOpenWindowTranslator extends PacketTranslator<ServerOpenWindowP
 
     @Override
     public void translate(ServerOpenWindowPacket packet, GeyserSession session) {
+        session.addInventoryTask(() -> {
             if (packet.getWindowId() == 0) {
                 return;
             }
+
             InventoryTranslator newTranslator = InventoryTranslator.INVENTORY_TRANSLATORS.get(packet.getType());
-        Inventory openInventory = session.getInventoryCache().getOpenInventory();
+            Inventory openInventory = session.getOpenInventory();
+            //No translator exists for this window type. Close all windows and return.
             if (newTranslator == null) {
                 if (openInventory != null) {
-                InventoryUtils.closeWindow(session, openInventory.getId());
                     InventoryUtils.closeInventory(session, openInventory.getId());
                 }
                 ClientCloseWindowPacket closeWindowPacket = new ClientCloseWindowPacket(packet.getWindowId());
@@ -57,19 +59,17 @@ public class JavaOpenWindowTranslator extends PacketTranslator<ServerOpenWindowP
             }
 
             String name = MessageTranslator.convertMessageLenient(packet.getName(), session.getLocale());
-
             name = LocaleUtils.getLocaleString(name, session.getLocale());
 
-        Inventory newInventory = new Inventory(name, packet.getWindowId(), packet.getType(), newTranslator.size + 36);
-        session.getInventoryCache().cacheInventory(newInventory);
+            Inventory newInventory = newTranslator.createInventory(name, packet.getWindowId(), packet.getType(), session.getPlayerInventory());
             if (openInventory != null) {
                 InventoryTranslator openTranslator = InventoryTranslator.INVENTORY_TRANSLATORS.get(openInventory.getWindowType());
                 if (!openTranslator.getClass().equals(newTranslator.getClass())) {
-                InventoryUtils.closeWindow(session, openInventory.getId());
                     InventoryUtils.closeInventory(session, openInventory.getId());
                 }
             }
 
             InventoryUtils.openInventory(session, newInventory);
+        });
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/java/window/JavaSetSlotTranslator.java

@@ -26,6 +26,8 @@
 package org.geysermc.connector.network.translators.java.window;
 
 import com.github.steveice10.mc.protocol.packet.ingame.server.window.ServerSetSlotPacket;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.inventory.Inventory;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
@@ -38,23 +40,39 @@ public class JavaSetSlotTranslator extends PacketTranslator<ServerSetSlotPacket>
 
     @Override
     public void translate(ServerSetSlotPacket packet, GeyserSession session) {
-        if (packet.getWindowId() == 255 && packet.getSlot() == -1) { //cursor
-            if (session.getCraftSlot() != 0)
-                return;
-
-            session.getInventory().setCursor(packet.getItem());
+        session.addInventoryTask(() -> {
+            if (packet.getWindowId() == 255) { //cursor
+                GeyserItemStack newItem = GeyserItemStack.from(packet.getItem());
+                GeyserItemStack oldItem = session.getPlayerInventory().getCursor();
+                if (newItem.getItemData(session).equals(oldItem.getItemData(session))) {
+                    newItem.setNetId(oldItem.getNetId());
+                } else {
+                    newItem.setNetId(session.getItemNetId().getAndIncrement());
+                }
+                session.getPlayerInventory().setCursor(newItem);
                 InventoryUtils.updateCursor(session);
                 return;
             }
 
-        Inventory inventory = session.getInventoryCache().getInventories().get(packet.getWindowId());
-        if (inventory == null || (packet.getWindowId() != 0 && inventory.getWindowType() == null))
+            //TODO: support window id -2, should update player inventory
+            Inventory inventory = InventoryUtils.getInventory(session, packet.getWindowId());
+            if (inventory == null)
                 return;
 
             InventoryTranslator translator = InventoryTranslator.INVENTORY_TRANSLATORS.get(inventory.getWindowType());
             if (translator != null) {
-            inventory.setItem(packet.getSlot(), packet.getItem());
+                GeyserItemStack newItem = GeyserItemStack.from(packet.getItem());
+                GeyserItemStack oldItem = inventory.getItem(packet.getSlot());
+                if (newItem.getItemData(session).equals(oldItem.getItemData(session), false, false, false)) {
+                    newItem.setNetId(oldItem.getNetId());
+                    System.out.println("OLD: " + newItem.getNetId());
+                } else {
+                    newItem.setNetId(session.getItemNetId().getAndIncrement());
+                    System.out.println("NEW: " + newItem.getNetId());
+                }
+                inventory.setItem(packet.getSlot(), newItem);
                 translator.updateSlot(session, inventory, packet.getSlot());
             }
+        });
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/java/window/JavaWindowItemsTranslator.java

@@ -26,32 +26,40 @@
 package org.geysermc.connector.network.translators.java.window;
 
 import com.github.steveice10.mc.protocol.packet.ingame.server.window.ServerWindowItemsPacket;
+import com.nukkitx.protocol.bedrock.data.inventory.ItemData;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.inventory.Inventory;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
 import org.geysermc.connector.network.translators.Translator;
 import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
-
-import java.util.Arrays;
+import org.geysermc.connector.utils.InventoryUtils;
 
 @Translator(packet = ServerWindowItemsPacket.class)
 public class JavaWindowItemsTranslator extends PacketTranslator<ServerWindowItemsPacket> {
 
     @Override
     public void translate(ServerWindowItemsPacket packet, GeyserSession session) {
-        Inventory inventory = session.getInventoryCache().getInventories().get(packet.getWindowId());
-        if (inventory == null || (packet.getWindowId() != 0 && inventory.getWindowType() == null))
+        session.addInventoryTask(() -> {
+            Inventory inventory = InventoryUtils.getInventory(session, packet.getWindowId());
+            if (inventory == null)
                 return;
 
-        if (packet.getItems().length < inventory.getSize()) {
-            inventory.setItems(Arrays.copyOf(packet.getItems(), inventory.getSize()));
+            for (int i = 0; i < packet.getItems().length; i++) {
+                GeyserItemStack newItem = GeyserItemStack.from(packet.getItems()[i]);
+                GeyserItemStack oldItem = inventory.getItem(i);
+                if (newItem.getItemData(session).equals(oldItem.getItemData(session), false, false, false)) {
+                    newItem.setNetId(oldItem.getNetId());
                 } else {
-            inventory.setItems(packet.getItems());
+                    newItem.setNetId(session.getItemNetId().getAndIncrement());
+                }
+                inventory.setItem(i, newItem);
             }
 
             InventoryTranslator translator = InventoryTranslator.INVENTORY_TRANSLATORS.get(inventory.getWindowType());
             if (translator != null) {
                 translator.updateInventory(session, inventory);
             }
+        });
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/java/window/JavaWindowPropertyTranslator.java

@@ -31,19 +31,22 @@ import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
 import org.geysermc.connector.network.translators.Translator;
 import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
+import org.geysermc.connector.utils.InventoryUtils;
 
 @Translator(packet = ServerWindowPropertyPacket.class)
 public class JavaWindowPropertyTranslator extends PacketTranslator<ServerWindowPropertyPacket> {
 
     @Override
     public void translate(ServerWindowPropertyPacket packet, GeyserSession session) {
-        Inventory inventory = session.getInventoryCache().getInventories().get(packet.getWindowId());
-        if (inventory == null || (packet.getWindowId() != 0 && inventory.getWindowType() == null))
+        session.addInventoryTask(() -> {
+            Inventory inventory = InventoryUtils.getInventory(session, packet.getWindowId());
+            if (inventory == null)
                 return;
 
             InventoryTranslator translator = InventoryTranslator.INVENTORY_TRANSLATORS.get(inventory.getWindowType());
             if (translator != null) {
                 translator.updateProperty(session, inventory, packet.getRawProperty(), packet.getValue());
             }
+        });
     }
 }

connector/src/main/java/org/geysermc/connector/network/translators/java/world/JavaNotifyClientTranslator.java

@@ -111,7 +111,7 @@ public class JavaNotifyClientTranslator extends PacketTranslator<ServerNotifyCli
                 session.sendAdventureSettings();
 
                 // Update the crafting grid to add/remove barriers for creative inventory
-                PlayerInventoryTranslator.updateCraftingGrid(session, session.getInventory());
+                PlayerInventoryTranslator.updateCraftingGrid(session, session.getPlayerInventory());
                 break;
             case ENTER_CREDITS:
                 switch ((EnterCreditsValue) packet.getValue()) {

connector/src/main/java/org/geysermc/connector/network/translators/java/world/JavaTradeListTranslator.java

@@ -38,6 +38,7 @@ import com.nukkitx.protocol.bedrock.packet.UpdateTradePacket;
 import org.geysermc.connector.entity.Entity;
 import org.geysermc.connector.entity.type.EntityType;
 import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.inventory.MerchantContainer;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
 import org.geysermc.connector.network.translators.Translator;
@@ -53,8 +54,14 @@ public class JavaTradeListTranslator extends PacketTranslator<ServerTradeListPac
 
     @Override
     public void translate(ServerTradeListPacket packet, GeyserSession session) {
-        Entity villager = session.getPlayerEntity();
-        session.setVillagerTrades(packet.getTrades());
+        Inventory openInventory = session.getOpenInventory();
+        if (!(openInventory instanceof MerchantContainer && openInventory.getId() == packet.getWindowId())) {
+            return;
+        }
+
+        MerchantContainer merchantInventory = (MerchantContainer) openInventory;
+        merchantInventory.setVillagerTrades(packet.getTrades());
+        Entity villager = merchantInventory.getVillager();
         villager.getMetadata().put(EntityData.TRADE_TIER, packet.getVillagerLevel() - 1);
         villager.getMetadata().put(EntityData.MAX_TRADE_TIER, 4);
         villager.getMetadata().put(EntityData.TRADE_XP, packet.getExperience());
@@ -64,11 +71,8 @@ public class JavaTradeListTranslator extends PacketTranslator<ServerTradeListPac
         updateTradePacket.setTradeTier(packet.getVillagerLevel() - 1);
         updateTradePacket.setContainerId((short) packet.getWindowId());
         updateTradePacket.setContainerType(ContainerType.TRADE);
-        Inventory openInv = session.getInventoryCache().getOpenInventory();
         String displayName;
-        if (openInv != null && openInv.getId() == packet.getWindowId()) {
-            displayName = openInv.getTitle();
-        } else {
+        //TODO: verify correct window title behavior
         Entity realVillager = session.getEntityCache().getEntityByGeyserId(session.getLastInteractedVillagerEid());
         if (realVillager != null && realVillager.getMetadata().containsKey(EntityData.NAMETAG) && realVillager.getMetadata().getString(EntityData.NAMETAG) != null) {
             displayName = realVillager.getMetadata().getString(EntityData.NAMETAG);
@@ -76,18 +80,19 @@ public class JavaTradeListTranslator extends PacketTranslator<ServerTradeListPac
             displayName = realVillager != null &&
                     realVillager.getEntityType() == EntityType.WANDERING_TRADER ? "Wandering Trader" : "Villager";
         }
-        }
         updateTradePacket.setDisplayName(displayName);
         updateTradePacket.setSize(0);
         updateTradePacket.setNewTradingUi(true);
         updateTradePacket.setUsingEconomyTrade(true);
         updateTradePacket.setPlayerUniqueEntityId(session.getPlayerEntity().getGeyserId());
-        updateTradePacket.setTraderUniqueEntityId(session.getPlayerEntity().getGeyserId());
+        updateTradePacket.setTraderUniqueEntityId(villager.getGeyserId());
         NbtMapBuilder builder = NbtMap.builder();
         List<NbtMap> tags = new ArrayList<>();
-        for (VillagerTrade trade : packet.getTrades()) {
+        for (int i = 0; i < packet.getTrades().length; i++) {
+            VillagerTrade trade = packet.getTrades()[i];
             NbtMapBuilder recipe = NbtMap.builder();
-            recipe.putInt("maxUses", trade.getMaxUses());
+            recipe.putInt("netId", i + 1);
+            recipe.putInt("maxUses", trade.isTradeDisabled() ? 0 : trade.getMaxUses());
             recipe.putInt("traderExp", trade.getXp());
             recipe.putFloat("priceMultiplierA", trade.getPriceMultiplier());
             recipe.put("sell", getItemTag(session, trade.getOutput(), 0));

connector/src/main/java/org/geysermc/connector/network/translators/sound/BlockSoundInteractionHandler.java

@@ -27,6 +27,7 @@ package org.geysermc.connector.network.translators.sound;
 
 import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
 import com.nukkitx.math.vector.Vector3f;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.item.ItemRegistry;
 
@@ -60,12 +61,12 @@ public interface BlockSoundInteractionHandler extends SoundInteractionHandler<St
                 }
                 if (!contains) continue;
             }
-            ItemStack itemInHand = session.getInventory().getItemInHand();
+            GeyserItemStack itemInHand = session.getPlayerInventory().getItemInHand();
             if (interactionEntry.getKey().items().length != 0) {
-                if (itemInHand == null || itemInHand.getId() == 0) {
+                if (itemInHand.isEmpty()) {
                     continue;
                 }
-                String handIdentifier = ItemRegistry.getItem(session.getInventory().getItemInHand()).getJavaIdentifier();
+                String handIdentifier = itemInHand.getItemEntry().getJavaIdentifier();
                 boolean contains = false;
                 for (String itemIdentifier : interactionEntry.getKey().items()) {
                     if (handIdentifier.contains(itemIdentifier)) {
@@ -76,7 +77,7 @@ public interface BlockSoundInteractionHandler extends SoundInteractionHandler<St
                 if (!contains) continue;
             }
             if (session.isSneaking() && !interactionEntry.getKey().ignoreSneakingWhileHolding()) {
-                if (session.getInventory().getItemInHand() != null && session.getInventory().getItemInHand().getId() != 0) {
+                if (!itemInHand.isEmpty()) {
                     continue;
                 }
             }

connector/src/main/java/org/geysermc/connector/network/translators/sound/EntitySoundInteractionHandler.java

@@ -28,6 +28,7 @@ package org.geysermc.connector.network.translators.sound;
 import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
 import com.nukkitx.math.vector.Vector3f;
 import org.geysermc.connector.entity.Entity;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.item.ItemRegistry;
 
@@ -61,12 +62,12 @@ public interface EntitySoundInteractionHandler extends SoundInteractionHandler<E
                 }
                 if (!contains) continue;
             }
-            ItemStack itemInHand = session.getInventory().getItemInHand();
+            GeyserItemStack itemInHand = session.getPlayerInventory().getItemInHand();
             if (interactionEntry.getKey().items().length != 0) {
-                if (itemInHand == null || itemInHand.getId() == 0) {
+                if (itemInHand.isEmpty()) {
                     continue;
                 }
-                String handIdentifier = ItemRegistry.getItem(session.getInventory().getItemInHand()).getJavaIdentifier();
+                String handIdentifier = itemInHand.getItemEntry().getJavaIdentifier();
                 boolean contains = false;
                 for (String itemIdentifier : interactionEntry.getKey().items()) {
                     if (handIdentifier.contains(itemIdentifier)) {
@@ -77,7 +78,7 @@ public interface EntitySoundInteractionHandler extends SoundInteractionHandler<E
                 if (!contains) continue;
             }
             if (session.isSneaking() && !interactionEntry.getKey().ignoreSneakingWhileHolding()) {
-                if (session.getInventory().getItemInHand() != null && session.getInventory().getItemInHand().getId() != 0) {
+                if (!itemInHand.isEmpty()) {
                     continue;
                 }
             }

connector/src/main/java/org/geysermc/connector/network/translators/sound/block/BucketSoundInteractionHandler.java

@@ -39,7 +39,7 @@ public class BucketSoundInteractionHandler implements BlockSoundInteractionHandl
     @Override
     public void handleInteraction(GeyserSession session, Vector3f position, String identifier) {
         if (session.getBucketScheduledFuture() == null) return; // No bucket was really interacted with
-        String handItemIdentifier = ItemRegistry.getItem(session.getInventory().getItemInHand()).getJavaIdentifier();
+        String handItemIdentifier = session.getPlayerInventory().getItemInHand().getItemEntry().getJavaIdentifier();
         LevelSoundEventPacket soundEventPacket = new LevelSoundEventPacket();
         soundEventPacket.setPosition(position);
         soundEventPacket.setIdentifier(":");

connector/src/main/java/org/geysermc/connector/network/translators/sound/entity/MilkCowSoundInteractionHandler.java

@@ -39,7 +39,7 @@ public class MilkCowSoundInteractionHandler implements EntitySoundInteractionHan
 
     @Override
     public void handleInteraction(GeyserSession session, Vector3f position, Entity value) {
-        if (!ItemRegistry.getItem(session.getInventory().getItemInHand()).getJavaIdentifier().equals("minecraft:bucket")) {
+        if (!session.getPlayerInventory().getItemInHand().getItemEntry().getJavaIdentifier().equals("minecraft:bucket")) {
             return;
         }
         LevelSoundEventPacket levelSoundEventPacket = new LevelSoundEventPacket();

connector/src/main/java/org/geysermc/connector/utils/BlockUtils.java

@@ -132,7 +132,7 @@ public class BlockUtils {
                 && BlockTranslator.getBedrockBlockId(session.getConnector().getWorldManager().getBlockAt(session, session.getPlayerEntity().getPosition().toInt())) == BlockTranslator.BEDROCK_WATER_ID;
 
         boolean insideOfWaterWithoutAquaAffinity = isInWater &&
-                ItemUtils.getEnchantmentLevel(Optional.ofNullable(session.getInventory().getItem(5)).map(ItemStack::getNbt).orElse(null), "minecraft:aqua_affinity") < 1;
+                ItemUtils.getEnchantmentLevel(session.getPlayerInventory().getItem(5).getNbt(), "minecraft:aqua_affinity") < 1;
 
         boolean outOfWaterButNotOnGround = (!isInWater) && (!session.getPlayerEntity().isOnGround());
         boolean insideWaterNotOnGround = isInWater && !session.getPlayerEntity().isOnGround();

connector/src/main/java/org/geysermc/connector/utils/InventoryUtils.java

@@ -38,8 +38,10 @@ import com.nukkitx.protocol.bedrock.data.inventory.ItemData;
 import com.nukkitx.protocol.bedrock.packet.InventorySlotPacket;
 import com.nukkitx.protocol.bedrock.packet.PlayerHotbarPacket;
 import org.geysermc.connector.GeyserConnector;
+import org.geysermc.connector.inventory.GeyserItemStack;
 import org.geysermc.connector.common.ChatColor;
 import org.geysermc.connector.inventory.Inventory;
+import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.inventory.DoubleChestInventoryTranslator;
 import org.geysermc.connector.network.translators.inventory.InventoryTranslator;
@@ -52,17 +54,16 @@ import java.util.Objects;
 import java.util.concurrent.TimeUnit;
 
 public class InventoryUtils {
-    public static final ItemStack REFRESH_ITEM = new ItemStack(1, 127, new CompoundTag("")); //TODO: stop using this
+    public static final ItemStack REFRESH_ITEM = new ItemStack(1, 127, new CompoundTag(""));
 
     public static void openInventory(GeyserSession session, Inventory inventory) {
         InventoryTranslator translator = InventoryTranslator.INVENTORY_TRANSLATORS.get(inventory.getWindowType());
         if (translator != null) {
-            session.getInventoryCache().setOpenInventory(inventory);
+            session.setOpenInventory(inventory);
             translator.prepareInventory(session, inventory);
             //Ensure at least half a second passes between closing and opening a new window
             //The client will not open the new window if it is still closing the old one
             long delay = 700 - (System.currentTimeMillis() - session.getLastWindowCloseTime());
-            //TODO: find better way to handle double chest delay
             if (translator instanceof DoubleChestInventoryTranslator) {
                 delay = Math.max(delay, 200);
             }
@@ -79,53 +80,44 @@ public class InventoryUtils {
     }
 
     public static void closeInventory(GeyserSession session, int windowId) {
-        if (windowId != 0) {
-            Inventory inventory = session.getInventoryCache().getInventories().get(windowId);
-            Inventory openInventory = session.getInventoryCache().getOpenInventory();
-            session.getInventoryCache().uncacheInventory(windowId);
-            if (inventory != null && openInventory != null && inventory.getId() == openInventory.getId()) {
+        session.getPlayerInventory().setCursor(GeyserItemStack.EMPTY);
+        updateCursor(session);
+
+        Inventory inventory = getInventory(session, windowId);
+        if (inventory != null) {
             InventoryTranslator translator = InventoryTranslator.INVENTORY_TRANSLATORS.get(inventory.getWindowType());
             translator.closeInventory(session, inventory);
-                session.getInventoryCache().setOpenInventory(null);
-            } else {
-                return;
-            }
-        } else {
-            Inventory inventory = session.getInventory();
-            inventory.setOpen(false);
-            InventoryTranslator translator = InventoryTranslator.INVENTORY_TRANSLATORS.get(inventory.getWindowType());
-            translator.updateInventory(session, inventory);
-        }
-
-        session.setCraftSlot(0);
-        session.getInventory().setCursor(null);
-        updateCursor(session);
-    }
-
-    public static void closeWindow(GeyserSession session, int windowId) {
-        //TODO: Investigate client crash when force closing window and opening a new one
-        //Instead, the window will eventually close by removing the fake blocks
-        session.setLastWindowCloseTime(System.currentTimeMillis());
-
-        /*
-        //Spamming close window packets can bug the client
-        if (System.currentTimeMillis() - session.getLastWindowCloseTime() > 500) {
-            ContainerClosePacket closePacket = new ContainerClosePacket();
-            closePacket.setId((byte) windowId);
-            session.sendUpstreamPacket(closePacket);
             session.setLastWindowCloseTime(System.currentTimeMillis());
         }
-        */
+        session.setOpenInventory(null);
+    }
+
+    public static Inventory getInventory(GeyserSession session, int windowId) {
+        if (windowId == 0) {
+            return session.getPlayerInventory();
+        } else {
+            Inventory openInventory = session.getOpenInventory();
+            if (openInventory != null && windowId == openInventory.getId()) {
+                return openInventory;
+            }
+            return null;
+        }
     }
 
     public static void updateCursor(GeyserSession session) {
         InventorySlotPacket cursorPacket = new InventorySlotPacket();
         cursorPacket.setContainerId(ContainerId.UI);
         cursorPacket.setSlot(0);
-        cursorPacket.setItem(ItemTranslator.translateToBedrock(session, session.getInventory().getCursor()));
+        cursorPacket.setItem(session.getPlayerInventory().getCursor().getItemData(session));
         session.sendUpstreamPacket(cursorPacket);
     }
 
+    public static boolean canStack(GeyserItemStack item1, GeyserItemStack item2) {
+        if (item1.isEmpty() || item2.isEmpty())
+            return false;
+        return item1.getId() == item2.getId() && Objects.equals(item1.getNbt(), item2.getNbt());
+    }
+
     public static boolean canStack(ItemStack item1, ItemStack item2) {
         if (item1 == null || item2 == null)
             return false;
@@ -170,19 +162,16 @@ public class InventoryUtils {
      */
     public static void findOrCreatePickedBlock(GeyserSession session, String itemName) {
         // Get the inventory to choose a slot to pick
-        Inventory inventory = session.getInventoryCache().getOpenInventory();
-        if (inventory == null) {
-            inventory = session.getInventory();
-        }
+        PlayerInventory inventory = session.getPlayerInventory();
 
         // Check hotbar for item
         for (int i = 36; i < 45; i++) {
-            if (inventory.getItem(i) == null) {
+            GeyserItemStack geyserItem = inventory.getItem(i);
+            if (geyserItem.isEmpty()) {
                 continue;
             }
-            ItemEntry item = ItemRegistry.getItem(inventory.getItem(i));
             // If this isn't the item we're looking for
-            if (!item.getJavaIdentifier().equals(itemName)) {
+            if (!geyserItem.getItemEntry().getJavaIdentifier().equals(itemName)) {
                 continue;
             }
 
@@ -193,12 +182,12 @@ public class InventoryUtils {
 
         // Check inventory for item
         for (int i = 9; i < 36; i++) {
-            if (inventory.getItem(i) == null) {
+            GeyserItemStack geyserItem = inventory.getItem(i);
+            if (geyserItem.isEmpty()) {
                 continue;
             }
-            ItemEntry item = ItemRegistry.getItem(inventory.getItem(i));
             // If this isn't the item we're looking for
-            if (!item.getJavaIdentifier().equals(itemName)) {
+            if (!geyserItem.getItemEntry().getJavaIdentifier().equals(itemName)) {
                 continue;
             }
 
@@ -209,10 +198,10 @@ public class InventoryUtils {
 
         // If we still have not found the item, and we're in creative, ask for the item from the server.
         if (session.getGameMode() == GameMode.CREATIVE) {
-            int slot = session.getInventory().getHeldItemSlot() + 36;
-            if (session.getInventory().getItemInHand() != null) { // Otherwise we should just use the current slot
+            int slot = inventory.getHeldItemSlot() + 36;
+            if (!inventory.getItemInHand().isEmpty()) { // Otherwise we should just use the current slot
                 for (int i = 36; i < 45; i++) {
-                    if (inventory.getItem(i) == null) {
+                    if (inventory.getItem(i).isEmpty()) {
                         slot = i;
                         break;
                     }
@@ -221,7 +210,7 @@ public class InventoryUtils {
 
             ClientCreativeInventoryActionPacket actionPacket = new ClientCreativeInventoryActionPacket(slot,
                     new ItemStack(ItemRegistry.getItemEntry(itemName).getJavaId()));
-            if ((slot - 36) != session.getInventory().getHeldItemSlot()) {
+            if ((slot - 36) != inventory.getHeldItemSlot()) {
                 setHotbarItem(session, slot);
             }
             session.sendDownstreamPacket(actionPacket);