Start working on 1.19.4

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

@@ -60,7 +60,8 @@ public enum ProtocolVersion {
   MINECRAFT_1_18_2(758, "1.18.2"),
   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_3(761, "1.19.3"),
+  MINECRAFT_1_19_4(762, "1.19.4");
 
   private static final int SNAPSHOT_BIT = 30;
 

proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertyRegistry.java

@@ -19,6 +19,7 @@ package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import static com.velocitypowered.api.network.ProtocolVersion.MINECRAFT_1_19;
 import static com.velocitypowered.api.network.ProtocolVersion.MINECRAFT_1_19_3;
+import static com.velocitypowered.api.network.ProtocolVersion.MINECRAFT_1_19_4;
 import static com.velocitypowered.proxy.protocol.packet.brigadier.ArgumentIdentifier.id;
 import static com.velocitypowered.proxy.protocol.packet.brigadier.ArgumentIdentifier.mapSet;
 import static com.velocitypowered.proxy.protocol.packet.brigadier.DoubleArgumentPropertySerializer.DOUBLE;
@@ -232,8 +233,9 @@ public class ArgumentPropertyRegistry {
     empty(id("minecraft:entity_summon", mapSet(MINECRAFT_1_19_3, -1), mapSet(MINECRAFT_1_19, 40)));
     empty(id("minecraft:dimension", mapSet(MINECRAFT_1_19_3, 38), mapSet(MINECRAFT_1_19, 41)));
     empty(id("minecraft:gamemode", mapSet(MINECRAFT_1_19_3, 39))); // 1.19.3
+
     empty(id("minecraft:time", mapSet(MINECRAFT_1_19_3, 40),
-        mapSet(MINECRAFT_1_19, 42))); // added in 1.14
+        mapSet(MINECRAFT_1_19, 42)), TimeArgumentSerializer.TIME); // added in 1.14
 
     register(
         id("minecraft:resource_or_tag", mapSet(MINECRAFT_1_19_3, 41), mapSet(MINECRAFT_1_19, 43)),
@@ -249,8 +251,9 @@ public class ArgumentPropertyRegistry {
 
     empty(id("minecraft:template_mirror", mapSet(MINECRAFT_1_19, 45))); // 1.19
     empty(id("minecraft:template_rotation", mapSet(MINECRAFT_1_19, 46))); // 1.19
+    empty(id("minecraft:heightmap", mapSet(MINECRAFT_1_19_4, 47))); // 1.19.4
 
-    empty(id("minecraft:uuid", mapSet(MINECRAFT_1_19, 47))); // added in 1.16
+    empty(id("minecraft:uuid", mapSet(MINECRAFT_1_19_4, 48), mapSet(MINECRAFT_1_19, 47))); // added in 1.16
 
     // Crossstitch support
     register(id("crossstitch:mod_argument", mapSet(MINECRAFT_1_19, -256)),

proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/TimeArgumentSerializer.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2018-2023 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.velocitypowered.proxy.protocol.packet.brigadier;
+
+import com.velocitypowered.api.network.ProtocolVersion;
+import io.netty.buffer.ByteBuf;
+
+public class TimeArgumentSerializer implements ArgumentPropertySerializer<Integer> {
+
+  static final TimeArgumentSerializer TIME = new TimeArgumentSerializer();
+
+  @Override
+  public Integer deserialize(ByteBuf buf, ProtocolVersion protocolVersion) {
+    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_19_4) >= 0) {
+      return buf.readInt();
+    }
+    return 0;
+  }
+
+  @Override
+  public void serialize(Integer object, ByteBuf buf, ProtocolVersion protocolVersion) {
+    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_19_4) >= 0) {
+      buf.writeInt(object);
+    }
+  }
+}