Purpur/patches/server/0003-Purpur-client-support.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Fri, 30 Jul 2021 14:31:25 -0500
Subject: [PATCH] Purpur client support


diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 5fad40fa88f697108e42461c41012d5964ed7d75..a808c7bb143dc8c5f60bf8eacdb6e45f73da69fb 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -277,6 +277,7 @@ public class ServerPlayer extends Player {
     public final com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> cachedSingleHashSet; // Paper
     public PlayerNaturallySpawnCreaturesEvent playerNaturallySpawnedEvent; // Paper
     public org.bukkit.event.player.PlayerQuitEvent.QuitReason quitReason = null; // Paper - there are a lot of changes to do if we change all methods leading to the event
+    public boolean purpurClient = false; // Purpur
 
     private final java.util.concurrent.atomic.AtomicReference<io.papermc.paper.chunk.system.RegionizedPlayerChunkLoader.ViewDistances> viewDistances = new java.util.concurrent.atomic.AtomicReference<>(new io.papermc.paper.chunk.system.RegionizedPlayerChunkLoader.ViewDistances(-1, -1, -1));
     public io.papermc.paper.chunk.system.RegionizedPlayerChunkLoader.PlayerChunkLoaderData chunkLoader;
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 705181a7cc203b7f60d7038d1f341c2d52cec6b1..67a71b0d04cc3c8239dce26c7022b18a6ff3a58c 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -3501,6 +3501,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
     private static final ResourceLocation CUSTOM_UNREGISTER = new ResourceLocation("unregister");
 
     private static final ResourceLocation MINECRAFT_BRAND = new ResourceLocation("brand"); // Paper - Brand support
+    private static final ResourceLocation PURPUR_CLIENT = new ResourceLocation("purpur", "client"); // Purpur
 
     @Override
     public void handleCustomPayload(ServerboundCustomPayloadPacket packet) {
@@ -3525,6 +3526,13 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
                 ServerGamePacketListenerImpl.LOGGER.error("Couldn\'t unregister custom payload", ex);
                 this.disconnect("Invalid payload UNREGISTER!", org.bukkit.event.player.PlayerKickEvent.Cause.INVALID_PAYLOAD); // Paper - kick event cause
             }
+        // Purpur start
+        } else if (packet.identifier.equals(PURPUR_CLIENT)) {
+            try {
+                player.purpurClient = true;
+            } catch (Exception ignore) {
+            }
+        // Purpur end
         } else {
             try {
                 byte[] data = new byte[packet.data.readableBytes()];
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index be933acd3004e7e092be3688d0d9ee97b159ab5a..09d2f1586d19d0d5c9c78cde5263f30e7a7d0647 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -3143,4 +3143,11 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return this.spigot;
     }
     // Spigot end
+
+    // Purpur start
+    @Override
+    public boolean usesPurpurClient() {
+        return getHandle().purpurClient;
+    }
+    // Purpur end
 }