1.20

api/src/main/java/com/velocitypowered/api/network/ProtocolVersion.java

@@ -61,7 +61,8 @@ public enum ProtocolVersion {
   MINECRAFT_1_19(759, "1.19"),
   MINECRAFT_1_19_1(760, "1.19.1", "1.19.2"),
   MINECRAFT_1_19_3(761, "1.19.3"),
-  MINECRAFT_1_19_4(762, "1.19.4");
+  MINECRAFT_1_19_4(762, "1.19.4"),
+  MINECRAFT_1_20(763, "1.20");
 
   private static final int SNAPSHOT_BIT = 30;
 

proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/JoinGame.java

@@ -49,6 +49,7 @@ public class JoinGame implements MinecraftPacket {
   private short previousGamemode; // 1.16+
   private int simulationDistance; // 1.18+
   private @Nullable Pair<String, Long> lastDeathPosition; // 1.19+
+  private int portalCooldown; // 1.20+
 
   public int getEntityId() {
     return entityId;
@@ -162,6 +163,14 @@ public class JoinGame implements MinecraftPacket {
     this.lastDeathPosition = lastDeathPosition;
   }
 
+  public int getPortalCooldown() {
+    return portalCooldown;
+  }
+
+  public void setPortalCooldown(int portalCooldown) {
+    this.portalCooldown = portalCooldown;
+  }
+
   public CompoundBinaryTag getRegistry() {
     return registry;
   }
@@ -187,6 +196,7 @@ public class JoinGame implements MinecraftPacket {
         + ", previousGamemode=" + previousGamemode
         + ", simulationDistance=" + simulationDistance
         + ", lastDeathPosition='" + lastDeathPosition + '\''
+        + ", portalCooldown=" + portalCooldown
         + '}';
   }
 
@@ -279,6 +289,10 @@ public class JoinGame implements MinecraftPacket {
     if (version.compareTo(ProtocolVersion.MINECRAFT_1_19) >= 0 && buf.readBoolean()) {
       this.lastDeathPosition = Pair.of(ProtocolUtils.readString(buf), buf.readLong());
     }
+
+    if (version.compareTo(ProtocolVersion.MINECRAFT_1_20) >= 0) {
+      this.portalCooldown = ProtocolUtils.readVarInt(buf);
+    }
   }
 
   @Override
@@ -376,6 +390,10 @@ public class JoinGame implements MinecraftPacket {
         buf.writeBoolean(false);
       }
     }
+
+    if (version.compareTo(ProtocolVersion.MINECRAFT_1_20) >= 0) {
+      ProtocolUtils.writeVarInt(buf, portalCooldown);
+    }
   }
 
   @Override

proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Respawn.java

@@ -40,6 +40,7 @@ public class Respawn implements MinecraftPacket {
   private short previousGamemode; // 1.16+
   private CompoundBinaryTag currentDimensionData; // 1.16.2+
   private @Nullable Pair<String, Long> lastDeathPosition; // 1.19+
+  private int portalCooldown; // 1.20+
 
   public Respawn() {
   }
@@ -47,7 +48,7 @@ public class Respawn implements MinecraftPacket {
   public Respawn(int dimension, long partialHashedSeed, short difficulty, short gamemode,
       String levelType, byte dataToKeep, DimensionInfo dimensionInfo,
       short previousGamemode, CompoundBinaryTag currentDimensionData,
-      @Nullable Pair<String, Long> lastDeathPosition) {
+      @Nullable Pair<String, Long> lastDeathPosition, int portalCooldown) {
     this.dimension = dimension;
     this.partialHashedSeed = partialHashedSeed;
     this.difficulty = difficulty;
@@ -58,13 +59,14 @@ public class Respawn implements MinecraftPacket {
     this.previousGamemode = previousGamemode;
     this.currentDimensionData = currentDimensionData;
     this.lastDeathPosition = lastDeathPosition;
+    this.portalCooldown = portalCooldown;
   }
 
   public static Respawn fromJoinGame(JoinGame joinGame) {
     return new Respawn(joinGame.getDimension(), joinGame.getPartialHashedSeed(),
         joinGame.getDifficulty(), joinGame.getGamemode(), joinGame.getLevelType(),
         (byte) 0, joinGame.getDimensionInfo(), joinGame.getPreviousGamemode(),
-        joinGame.getCurrentDimensionData(), joinGame.getLastDeathPosition());
+        joinGame.getCurrentDimensionData(), joinGame.getLastDeathPosition(), joinGame.getPortalCooldown());
   }
 
   public int getDimension() {
@@ -123,12 +125,20 @@ public class Respawn implements MinecraftPacket {
     this.previousGamemode = previousGamemode;
   }
 
+  public Pair<String, Long> getLastDeathPosition() {
+    return lastDeathPosition;
+  }
+
   public void setLastDeathPosition(Pair<String, Long> lastDeathPosition) {
     this.lastDeathPosition = lastDeathPosition;
   }
 
-  public Pair<String, Long> getLastDeathPosition() {
-    return lastDeathPosition;
+  public int getPortalCooldown() {
+    return portalCooldown;
+  }
+
+  public void setPortalCooldown(int portalCooldown) {
+    this.portalCooldown = portalCooldown;
   }
 
   @Override
@@ -144,6 +154,7 @@ public class Respawn implements MinecraftPacket {
         + ", dimensionInfo=" + dimensionInfo
         + ", previousGamemode=" + previousGamemode
         + ", dimensionData=" + currentDimensionData
+        + ", portalCooldown=" + portalCooldown
         + '}';
   }
 
@@ -188,6 +199,9 @@ public class Respawn implements MinecraftPacket {
     if (version.compareTo(ProtocolVersion.MINECRAFT_1_19) >= 0 && buf.readBoolean()) {
       this.lastDeathPosition = Pair.of(ProtocolUtils.readString(buf), buf.readLong());
     }
+    if (version.compareTo(ProtocolVersion.MINECRAFT_1_20) >= 0) {
+      this.portalCooldown = ProtocolUtils.readVarInt(buf);
+    }
   }
 
   @Override
@@ -234,6 +248,10 @@ public class Respawn implements MinecraftPacket {
         buf.writeBoolean(false);
       }
     }
+
+    if (version.compareTo(ProtocolVersion.MINECRAFT_1_20) >= 0) {
+      ProtocolUtils.writeVarInt(buf, portalCooldown);
+    }
   }
 
   @Override