Start fixing dimension switching and respawning

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

@@ -29,6 +29,7 @@ import com.github.steveice10.mc.auth.data.GameProfile;
 import com.github.steveice10.mc.auth.exception.request.RequestException;
 import com.github.steveice10.mc.protocol.MinecraftProtocol;
 import com.github.steveice10.mc.protocol.data.game.entity.player.GameMode;
+import com.github.steveice10.mc.protocol.packet.ingame.server.ServerRespawnPacket;
 import com.github.steveice10.packetlib.Client;
 import com.github.steveice10.packetlib.event.session.ConnectedEvent;
 import com.github.steveice10.packetlib.event.session.DisconnectedEvent;
@@ -57,6 +58,7 @@ import org.geysermc.connector.inventory.PlayerInventory;
 import org.geysermc.connector.network.session.cache.*;
 import org.geysermc.connector.network.translators.Registry;
 import org.geysermc.connector.network.translators.TranslatorsInit;
+import org.geysermc.connector.utils.DimensionUtils;
 import org.geysermc.connector.utils.Toolbox;
 
 import java.net.InetSocketAddress;
@@ -97,6 +99,11 @@ public class GeyserSession implements Player {
     @Setter
     private GameMode gameMode = GameMode.SURVIVAL;
 
+    @Setter
+    private volatile boolean switchingDim = false;
+    private final Object dimensionLock = new Object();
+    private ServerRespawnPacket lastDimPacket = null;
+
     public GeyserSession(GeyserConnector connector, BedrockServerSession bedrockServerSession) {
         this.connector = connector;
         this.upstream = new UpstreamSession(bedrockServerSession);
@@ -198,6 +205,18 @@ public class GeyserSession implements Player {
                     @Override
                     public void packetReceived(PacketReceivedEvent event) {
                         if (!closed) {
+                            //handle consecutive respawn packets
+                            if (event.getPacket().getClass().equals(ServerRespawnPacket.class)) {
+                                if (lastDimPacket != null) {
+                                    DimensionUtils.switchDimension(GeyserSession.this, lastDimPacket.getDimension(), true);
+                                }
+                                lastDimPacket = event.getPacket();
+                                return;
+                            } else if (lastDimPacket != null) {
+                                Registry.JAVA.translate(lastDimPacket.getClass(), lastDimPacket, GeyserSession.this);
+                                lastDimPacket = null;
+                            }
+
                             Registry.JAVA.translate(event.getPacket().getClass(), event.getPacket(), GeyserSession.this);
                         }
                     }

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

@@ -156,6 +156,7 @@ public class TranslatorsInit {
         Registry.registerBedrock(SetLocalPlayerAsInitializedPacket.class, new BedrockPlayerInitializedTranslator());
         Registry.registerBedrock(InteractPacket.class, new BedrockInteractTranslator());
         Registry.registerBedrock(TextPacket.class, new BedrockTextTranslator());
+        Registry.registerBedrock(RespawnPacket.class, new BedrockRespawnTranslator());
 
         itemTranslator = new ItemTranslator();
         blockTranslator = new BlockTranslator();

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

@@ -34,7 +34,9 @@ import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlaye
 import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlayerPlaceBlockPacket;
 import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlayerStatePacket;
 import com.nukkitx.math.vector.Vector3i;
+import com.nukkitx.protocol.bedrock.packet.ChunkRadiusUpdatedPacket;
 import com.nukkitx.protocol.bedrock.packet.PlayerActionPacket;
+import com.nukkitx.protocol.bedrock.packet.UpdateBlockPacket;
 import org.geysermc.connector.entity.Entity;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
@@ -53,7 +55,7 @@ public class BedrockActionTranslator extends PacketTranslator<PlayerActionPacket
         switch (packet.getAction()) {
             case RESPAWN:
                 // Don't put anything here as respawn is already handled
-                // in JavaPlayerSetHealthTranslator
+                // in BedrockRespawnTranslator
                 break;
             case START_GLIDE:
             case STOP_GLIDE:
@@ -105,6 +107,12 @@ public class BedrockActionTranslator extends PacketTranslator<PlayerActionPacket
             case STOP_BREAK:
                 // Handled in BedrockInventoryTransactionTranslator
                 break;
+            case DIMENSION_CHANGE_SUCCESS:
+                synchronized (session.getDimensionLock()) {
+                    session.setSwitchingDim(false);
+                    session.getDimensionLock().notifyAll();
+                }
+                break;
         }
     }
 }

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

@@ -42,7 +42,7 @@ public class BedrockMovePlayerTranslator extends PacketTranslator<MovePlayerPack
     @Override
     public void translate(MovePlayerPacket packet, GeyserSession session) {
         PlayerEntity entity = session.getPlayerEntity();
-        if (entity == null || !session.isSpawned()) return;
+        if (entity == null || !session.isSpawned() || session.isSwitchingDim()) return;
 
         if (!session.getUpstream().isInitialized()) {
             MoveEntityAbsolutePacket moveEntityBack = new MoveEntityAbsolutePacket();

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

@@ -21,5 +21,9 @@ public class BedrockPlayerInitializedTranslator extends PacketTranslator<SetLoca
                 }
             }
         }
+        synchronized (session.getDimensionLock()) {
+            session.setSwitchingDim(false);
+            session.getDimensionLock().notifyAll();
+        }
     }
 }

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

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2019 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.github.steveice10.mc.protocol.data.game.ClientRequest;
+import com.github.steveice10.mc.protocol.packet.ingame.client.ClientRequestPacket;
+import com.nukkitx.protocol.bedrock.packet.RespawnPacket;
+import org.geysermc.connector.network.session.GeyserSession;
+import org.geysermc.connector.network.translators.PacketTranslator;
+
+public class BedrockRespawnTranslator extends PacketTranslator<RespawnPacket> {
+
+    @Override
+    public void translate(RespawnPacket packet, GeyserSession session) {
+        if (packet.getSpawnState() == RespawnPacket.State.CLIENT_READY) {
+            ClientRequestPacket javaRespawnPacket = new ClientRequestPacket(ClientRequest.RESPAWN);
+            session.getDownstream().getSession().send(javaRespawnPacket);
+        }
+    }
+}

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

@@ -26,22 +26,29 @@
 package org.geysermc.connector.network.translators.java;
 
 import com.github.steveice10.mc.protocol.packet.ingame.server.ServerJoinGamePacket;
-import com.nukkitx.math.vector.Vector3i;
-import com.nukkitx.protocol.bedrock.packet.AdventureSettingsPacket;
-import com.nukkitx.protocol.bedrock.packet.ChunkRadiusUpdatedPacket;
-import com.nukkitx.protocol.bedrock.packet.PlayStatusPacket;
-import com.nukkitx.protocol.bedrock.packet.SetEntityDataPacket;
-import com.nukkitx.protocol.bedrock.packet.SetPlayerGameTypePacket;
 
+import com.nukkitx.protocol.bedrock.packet.*;
 import org.geysermc.connector.entity.PlayerEntity;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
-import org.geysermc.connector.world.chunk.ChunkPosition;
+import org.geysermc.connector.utils.DimensionUtils;
 
 public class JavaJoinGameTranslator extends PacketTranslator<ServerJoinGamePacket> {
 
     @Override
     public void translate(ServerJoinGamePacket packet, GeyserSession session) {
+        PlayerEntity entity = session.getPlayerEntity();
+        entity.setEntityId(packet.getEntityId());
+
+        if (DimensionUtils.javaToBedrock(packet.getDimension()) != entity.getDimension()) {
+            if (!session.getUpstream().isInitialized()) {
+                session.setSwitchingDim(true);
+                DimensionUtils.sendEmptyChunks(session, entity.getPosition().toInt());
+                DimensionUtils.waitForAck(session);
+            }
+            DimensionUtils.switchDimension(session, packet.getDimension(), false);
+        }
+
         AdventureSettingsPacket bedrockPacket = new AdventureSettingsPacket();
         bedrockPacket.setUniqueEntityId(session.getPlayerEntity().getGeyserId());
         bedrockPacket.setPlayerPermission(1);
@@ -51,9 +58,6 @@ public class JavaJoinGameTranslator extends PacketTranslator<ServerJoinGamePacke
         playStatus.setStatus(PlayStatusPacket.Status.LOGIN_SUCCESS);
         // session.getUpstream().sendPacket(playStatus);
 
-        PlayerEntity entity = session.getPlayerEntity();
-        entity.setEntityId(packet.getEntityId());
-
         SetPlayerGameTypePacket playerGameTypePacket = new SetPlayerGameTypePacket();
         playerGameTypePacket.setGamemode(packet.getGameMode().ordinal());
         session.getUpstream().sendPacket(playerGameTypePacket);
@@ -70,7 +74,5 @@ public class JavaJoinGameTranslator extends PacketTranslator<ServerJoinGamePacke
         ChunkRadiusUpdatedPacket chunkRadiusPacket = new ChunkRadiusUpdatedPacket();
         chunkRadiusPacket.setRadius(session.getRenderDistance());
         session.getUpstream().sendPacket(chunkRadiusPacket);
-
-        session.setSpawned(true);
     }
 }

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

@@ -26,12 +26,11 @@
 package org.geysermc.connector.network.translators.java;
 
 import com.github.steveice10.mc.protocol.packet.ingame.server.ServerRespawnPacket;
-import com.nukkitx.protocol.bedrock.packet.ChangeDimensionPacket;
+import com.nukkitx.protocol.bedrock.packet.*;
-import com.nukkitx.protocol.bedrock.packet.PlayStatusPacket;
-import com.nukkitx.protocol.bedrock.packet.SetPlayerGameTypePacket;
 import org.geysermc.connector.entity.Entity;
 import org.geysermc.connector.network.session.GeyserSession;
 import org.geysermc.connector.network.translators.PacketTranslator;
+import org.geysermc.connector.utils.DimensionUtils;
 
 public class JavaRespawnTranslator extends PacketTranslator<ServerRespawnPacket> {
 
@@ -41,37 +40,16 @@ public class JavaRespawnTranslator extends PacketTranslator<ServerRespawnPacket>
         if (entity == null)
             return;
 
-        if (entity.getDimension() == getDimension(packet.getDimension()))
-            return;
-
-        entity.setDimension(getDimension(packet.getDimension()));
-
-        ChangeDimensionPacket changeDimensionPacket = new ChangeDimensionPacket();
-        changeDimensionPacket.setDimension(getDimension(packet.getDimension()));
-        changeDimensionPacket.setRespawn(false);
-        changeDimensionPacket.setPosition(entity.getPosition());
-        session.getUpstream().sendPacket(changeDimensionPacket);
-
         SetPlayerGameTypePacket playerGameTypePacket = new SetPlayerGameTypePacket();
         playerGameTypePacket.setGamemode(packet.getGamemode().ordinal());
         session.getUpstream().sendPacket(playerGameTypePacket);
         session.setGameMode(packet.getGamemode());
 
-        /*
+        if (entity.getDimension() != DimensionUtils.javaToBedrock(packet.getDimension())) {
-        PlayStatusPacket playStatusPacket = new PlayStatusPacket();
+            DimensionUtils.switchDimension(session, packet.getDimension(), false);
-        playStatusPacket.setStatus(PlayStatusPacket.Status.PLAYER_SPAWN);
+        } else {
-        session.getUpstream().sendPacket(playStatusPacket);
+            // Handled in JavaPlayerPositionRotationTranslator
-        */
+            session.setSpawned(false);
-    }
-
-    private int getDimension(int javaDimension) {
-        switch (javaDimension) {
-            case -1:
-                return 1;
-            case 1:
-                return 2;
         }
-
-        return javaDimension;
     }
 }

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

@@ -25,11 +25,7 @@
 
 package org.geysermc.connector.network.translators.java.entity.player;
 
-import com.github.steveice10.mc.protocol.data.game.ClientRequest;
-import com.github.steveice10.mc.protocol.packet.ingame.client.ClientRequestPacket;
 import com.github.steveice10.mc.protocol.packet.ingame.server.entity.player.ServerPlayerHealthPacket;
-import com.nukkitx.math.vector.Vector3f;
-import com.nukkitx.protocol.bedrock.packet.RespawnPacket;
 import com.nukkitx.protocol.bedrock.packet.SetHealthPacket;
 import org.geysermc.connector.entity.Entity;
 import org.geysermc.connector.entity.attribute.AttributeType;
@@ -60,14 +56,8 @@ public class JavaPlayerHealthTranslator extends PacketTranslator<ServerPlayerHea
         entity.updateBedrockAttributes(session);
 
         if (packet.getHealth() <= 0) {
-            RespawnPacket respawnPacket = new RespawnPacket();
+            entity.getAttributes().remove(AttributeType.HEALTH);
-            respawnPacket.setRuntimeEntityId(entity.getGeyserId());
+            entity.updateBedrockAttributes(session);
-            respawnPacket.setPosition(Vector3f.from(0, 72, 0));
-            respawnPacket.setSpawnState(RespawnPacket.State.SERVER_SEARCHING);
-            session.getUpstream().sendPacket(respawnPacket);
-
-            ClientRequestPacket javaRespawnPacket = new ClientRequestPacket(ClientRequest.RESPAWN);
-            session.getDownstream().getSession().send(javaRespawnPacket);
         }
     }
 }

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

@@ -28,8 +28,7 @@ package org.geysermc.connector.network.translators.java.entity.player;
 import com.github.steveice10.mc.protocol.packet.ingame.client.world.ClientTeleportConfirmPacket;
 import com.github.steveice10.mc.protocol.packet.ingame.server.entity.player.ServerPlayerPositionRotationPacket;
 import com.nukkitx.math.vector.Vector3f;
-import com.nukkitx.protocol.bedrock.packet.MovePlayerPacket;
+import com.nukkitx.protocol.bedrock.packet.*;
-import com.nukkitx.protocol.bedrock.packet.SetEntityDataPacket;
 import org.geysermc.connector.console.GeyserLogger;
 import org.geysermc.connector.entity.Entity;
 import org.geysermc.connector.entity.type.EntityType;
@@ -48,7 +47,26 @@ public class JavaPlayerPositionRotationTranslator extends PacketTranslator<Serve
             return;
 
         if (!session.isSpawned()) {
-            entity.moveAbsolute(Vector3f.from(packet.getX(), packet.getY() + EntityType.PLAYER.getOffset() + 0.1f, packet.getZ()), packet.getYaw(), packet.getPitch());
+            Vector3f pos = Vector3f.from(packet.getX(), packet.getY() + EntityType.PLAYER.getOffset() + 0.1f, packet.getZ());
+            entity.moveAbsolute(pos, packet.getYaw(), packet.getPitch());
+
+            RespawnPacket respawnPacket = new RespawnPacket();
+            respawnPacket.setRuntimeEntityId(0);
+            respawnPacket.setPosition(Vector3f.from(0, 32767, 0));
+            respawnPacket.setSpawnState(RespawnPacket.State.SERVER_SEARCHING);
+            session.getUpstream().sendPacket(respawnPacket);
+
+            respawnPacket = new RespawnPacket();
+            respawnPacket.setRuntimeEntityId(0);
+            respawnPacket.setPosition(pos);
+            respawnPacket.setSpawnState(RespawnPacket.State.SERVER_READY);
+            session.getUpstream().sendPacket(respawnPacket);
+
+            EntityEventPacket eventPacket = new EntityEventPacket();
+            eventPacket.setRuntimeEntityId(entity.getGeyserId());
+            eventPacket.setEvent(EntityEventPacket.Event.RESPAWN);
+            eventPacket.setData(0);
+            session.getUpstream().sendPacket(eventPacket);
 
             SetEntityDataPacket entityDataPacket = new SetEntityDataPacket();
             entityDataPacket.setRuntimeEntityId(entity.getGeyserId());
@@ -57,7 +75,7 @@ public class JavaPlayerPositionRotationTranslator extends PacketTranslator<Serve
 
             MovePlayerPacket movePlayerPacket = new MovePlayerPacket();
             movePlayerPacket.setRuntimeEntityId(entity.getGeyserId());
-            movePlayerPacket.setPosition(Vector3f.from(packet.getX(), packet.getY() + EntityType.PLAYER.getOffset() + 0.1f, packet.getZ()));
+            movePlayerPacket.setPosition(pos);
             movePlayerPacket.setRotation(Vector3f.from(packet.getPitch(), packet.getYaw(), 0));
             movePlayerPacket.setMode(MovePlayerPacket.Mode.RESET);
             movePlayerPacket.setOnGround(true);

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

@@ -0,0 +1,102 @@
+package org.geysermc.connector.utils;
+
+import com.nukkitx.math.vector.Vector3i;
+import com.nukkitx.protocol.bedrock.packet.*;
+import org.geysermc.connector.entity.Entity;
+import org.geysermc.connector.network.session.GeyserSession;
+import org.geysermc.connector.network.translators.TranslatorsInit;
+
+public class DimensionUtils {
+    public static void switchDimension(GeyserSession session, int javaDimension, boolean fake) {
+        int bedrockDimension = javaToBedrock(javaDimension);
+        Entity player = session.getPlayerEntity();
+        if (bedrockDimension == player.getDimension())
+            return;
+
+        Vector3i pos = Vector3i.from(0, 32767, 0);
+
+        //FIXME: chance of exception while iterating
+        try {
+            for (Entity entity : session.getEntityCache().getEntities().values()) {
+                session.getEntityCache().removeEntity(entity, false);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        ChangeDimensionPacket changeDimensionPacket = new ChangeDimensionPacket();
+        changeDimensionPacket.setDimension(bedrockDimension);
+        changeDimensionPacket.setRespawn(true);
+        changeDimensionPacket.setPosition(pos.toFloat());
+        session.getUpstream().sendPacket(changeDimensionPacket);
+        player.setDimension(bedrockDimension);
+
+        //let java server handle portal travel sound
+        StopSoundPacket stopSoundPacket = new StopSoundPacket();
+        stopSoundPacket.setStoppingAllSound(true);
+        stopSoundPacket.setSoundName("");
+        session.getUpstream().sendPacket(stopSoundPacket);
+
+        EntityEventPacket eventPacket = new EntityEventPacket();
+        eventPacket.setRuntimeEntityId(player.getGeyserId());
+        eventPacket.setEvent(EntityEventPacket.Event.RESPAWN);
+        eventPacket.setData(0);
+        session.getUpstream().sendPacket(eventPacket);
+
+        session.setSpawned(false);
+        session.setSwitchingDim(true);
+
+        if (fake) {
+            try {
+                Thread.sleep(250);
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+            }
+            sendEmptyChunks(session, pos.toInt());
+            waitForAck(session);
+        }
+    }
+
+    public static void waitForAck(GeyserSession session) {
+        synchronized (session.getDimensionLock()) {
+            try {
+                while (session.isSwitchingDim())
+                    session.getDimensionLock().wait();
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+            }
+        }
+    }
+
+    public static void sendEmptyChunks(GeyserSession session, Vector3i position) {
+        int chunkX = position.getX() >> 4;
+        int chunkZ = position.getZ() >> 4;
+        NetworkChunkPublisherUpdatePacket chunkPublisherUpdatePacket = new NetworkChunkPublisherUpdatePacket();
+        chunkPublisherUpdatePacket.setPosition(position);
+        chunkPublisherUpdatePacket.setRadius(session.getRenderDistance() << 4);
+        session.getUpstream().sendPacket(chunkPublisherUpdatePacket);
+        session.setLastChunkPosition(null);
+        for (int x = -5; x < 5; x++) {
+            for (int z = -5; z < 5; z++) {
+                LevelChunkPacket data = new LevelChunkPacket();
+                data.setChunkX(chunkX + x);
+                data.setChunkZ(chunkZ + z);
+                data.setSubChunksLength(0);
+                data.setData(TranslatorsInit.EMPTY_LEVEL_CHUNK_DATA);
+                data.setCachingEnabled(false);
+                session.getUpstream().sendPacket(data);
+            }
+        }
+    }
+
+    public static int javaToBedrock(int javaDimension) {
+        switch (javaDimension) {
+            case -1:
+                return 1;
+            case 1:
+                return 2;
+            default:
+                return javaDimension;
+        }
+    }
+}