Reject requests that are unavailable spaces; other things

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

@@ -418,8 +418,6 @@ public class GeyserSession implements CommandSender {
         this.spawned = false;
         this.loggedIn = false;
 
-        connector.getPlayers().forEach(player -> this.emotes.addAll(player.getEmotes()));
-
         // Make a copy to prevent ConcurrentModificationException
         final List<GeyserSession> tmpPlayers = new ArrayList<>(connector.getPlayers());
         tmpPlayers.forEach(player -> this.emotes.addAll(player.getEmotes()));

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

@@ -121,7 +121,8 @@ public abstract class InventoryTranslator {
      *
      * @return true if this transfer should be rejected
      */
-    public boolean shouldRejectItemPlace(GeyserSession session, Inventory inventory, int javaSourceSlot, int javaDestinationSlot) {
+    public boolean shouldRejectItemPlace(GeyserSession session, Inventory inventory, ContainerSlotType bedrockSourceContainer,
+                                         int javaSourceSlot, ContainerSlotType bedrockDestinationContainer, int javaDestinationSlot) {
         return false;
     }
 
@@ -201,8 +202,9 @@ public abstract class InventoryTranslator {
                     int sourceSlot = bedrockSlotToJava(transferAction.getSource());
                     int destSlot = bedrockSlotToJava(transferAction.getDestination());
 
-                    if (shouldRejectItemPlace(session, inventory, isCursor(transferAction.getSource()) ? -1 : sourceSlot,
+                    if (shouldRejectItemPlace(session, inventory, transferAction.getSource().getContainer(),
-                            isCursor(transferAction.getDestination()) ? -1 : destSlot)) {
+                            isCursor(transferAction.getSource()) ? -1 : sourceSlot,
+                            transferAction.getDestination().getContainer(), isCursor(transferAction.getDestination()) ? -1 : destSlot)) {
                         // This item would not be here in Java
                         return rejectRequest(request, false);
                     }
@@ -273,7 +275,7 @@ public abstract class InventoryTranslator {
                     }
                     break;
                 }
-                case SWAP: { //TODO
+                case SWAP: {
                     SwapStackRequestActionData swapAction = (SwapStackRequestActionData) action;
                     if (!(checkNetId(session, inventory, swapAction.getSource()) && checkNetId(session, inventory, swapAction.getDestination()))) {
                         session.getConnector().getLogger().error("DEBUG: About to reject SWAP request made by " + session.getName());
@@ -284,23 +286,31 @@ public abstract class InventoryTranslator {
                         return rejectRequest(request);
                     }
 
-                    if (isCursor(swapAction.getSource()) && isCursor(swapAction.getDestination())) { //???
+                    int sourceSlot = bedrockSlotToJava(swapAction.getSource());
+                    int destSlot = bedrockSlotToJava(swapAction.getDestination());
+                    boolean isSourceCursor = isCursor(swapAction.getSource());
+                    boolean isDestCursor = isCursor(swapAction.getDestination());
+
+                    if (shouldRejectItemPlace(session, inventory, swapAction.getSource().getContainer(),
+                            isSourceCursor ? -1 : sourceSlot,
+                            swapAction.getDestination().getContainer(), isDestCursor ? -1 : destSlot)) {
+                        // This item would not be here in Java
+                        return rejectRequest(request, false);
+                    }
+
+                    if (isSourceCursor && isDestCursor) { //???
                         return rejectRequest(request);
-                    } else if (isCursor(swapAction.getSource())) { //swap cursor
+                    } else if (isSourceCursor) { //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
+                    } else if (isDestCursor) { //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);
                         }

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

@@ -43,7 +43,8 @@ public class CartographyInventoryTranslator extends AbstractBlockInventoryTransl
     }
 
     @Override
-    public boolean shouldRejectItemPlace(GeyserSession session, Inventory inventory, int javaSourceSlot, int javaDestinationSlot) {
+    public boolean shouldRejectItemPlace(GeyserSession session, Inventory inventory, ContainerSlotType bedrockSourceContainer,
+                                         int javaSourceSlot, ContainerSlotType bedrockDestinationContainer, int javaDestinationSlot) {
         if (javaDestinationSlot == 0) {
             // Bedrock Edition can use paper in slot 0
             GeyserItemStack itemStack = javaSourceSlot == -1 ? session.getPlayerInventory().getCursor() : inventory.getItem(javaSourceSlot);

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

@@ -100,7 +100,8 @@ public class LoomInventoryTranslator extends AbstractBlockInventoryTranslator {
     }
 
     @Override
-    public boolean shouldRejectItemPlace(GeyserSession session, Inventory inventory, int javaSourceSlot, int javaDestinationSlot) {
+    public boolean shouldRejectItemPlace(GeyserSession session, Inventory inventory, ContainerSlotType bedrockSourceContainer,
+                                         int javaSourceSlot, ContainerSlotType bedrockDestinationContainer, int javaDestinationSlot) {
         if (javaDestinationSlot != 1) {
             return false;
         }

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

@@ -30,7 +30,9 @@ 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.data.inventory.ContainerSlotType;
+import com.nukkitx.protocol.bedrock.data.inventory.ItemStackRequest;
+import com.nukkitx.protocol.bedrock.data.inventory.StackRequestSlotInfoData;
 import com.nukkitx.protocol.bedrock.packet.ItemStackResponsePacket;
 import com.nukkitx.protocol.bedrock.packet.SetEntityLinkPacket;
 import org.geysermc.connector.entity.Entity;
@@ -128,6 +130,7 @@ public class MerchantInventoryTranslator extends BaseInventoryTranslator {
     @Override
     public void openInventory(GeyserSession session, Inventory inventory) {
         //Handled in JavaTradeListTranslator
+        //TODO: send a blank inventory here in case the villager doesn't send a TradeList packet
     }
 
     @Override

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

@@ -41,6 +41,16 @@ public abstract class ChestInventoryTranslator extends BaseInventoryTranslator {
         this.updater = new ChestInventoryUpdater(paddedSize);
     }
 
+    @Override
+    public boolean shouldRejectItemPlace(GeyserSession session, Inventory inventory, ContainerSlotType bedrockSourceContainer,
+                                         int javaSourceSlot, ContainerSlotType bedrockDestinationContainer, int javaDestinationSlot) {
+        // Reject any item placements that occur in the unusable inventory space
+        if (bedrockSourceContainer == ContainerSlotType.CONTAINER && javaSourceSlot >= this.size) {
+            return true;
+        }
+        return bedrockDestinationContainer == ContainerSlotType.CONTAINER && javaDestinationSlot >= this.size;
+    }
+
     @Override
     public void updateInventory(GeyserSession session, Inventory inventory) {
         updater.updateInventory(this, session, inventory);

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

@@ -61,7 +61,7 @@ public class JavaOpenHorseWindowTranslator extends PacketTranslator<ServerOpenHo
         String[] acceptedHorseArmorIdentifiers = new String[] {"minecraft:horsearmorleather", "minecraft:horsearmoriron",
                 "minecraft:horsearmorgold", "minecraft:horsearmordiamond"};
         NbtMapBuilder armorBuilder = NbtMap.builder();
-        List<NbtMap> acceptedArmors = new ArrayList<>();
+        List<NbtMap> acceptedArmors = new ArrayList<>(4);
         for (String identifier : acceptedHorseArmorIdentifiers) {
             NbtMapBuilder acceptedItemBuilder = NbtMap.builder()
                     .putShort("Aux", Short.MAX_VALUE)