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 fd1937f49312204d38510996a5be43b731f38bde..d905a7a2cf7a820bca8bddbc555c49764e8b7779 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -238,6 +238,7 @@ public class ServerPlayer extends Player {
     public Integer clientViewDistance;
     // CraftBukkit end
     public PlayerNaturallySpawnCreaturesEvent playerNaturallySpawnedEvent; // Paper
+    public boolean purpurClient = false; // Purpur
 
     public final com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> cachedSingleHashSet; // Paper
 
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 7ed73ea4a5f7383c953ee3e28ce8f234d8ff941e..210435ecd44a7f111d2ad78b368f929dbba0fe10 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2865,6 +2865,8 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
     private static final ResourceLocation CUSTOM_REGISTER = new ResourceLocation("register");
     private static final ResourceLocation CUSTOM_UNREGISTER = new ResourceLocation("unregister");
 
+    private static final ResourceLocation PURPUR_CLIENT = new ResourceLocation("purpur", "client"); // Purpur
+
     @Override
     public void handleCustomPayload(ServerboundCustomPayloadPacket packet) {
         PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
@@ -2888,6 +2890,13 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
                 ServerGamePacketListenerImpl.LOGGER.error("Couldn\'t unregister custom payload", ex);
                 this.disconnect("Invalid payload UNREGISTER!");
             }
+        // 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 b415f0760bd1027dcc9cd987d06421cbc50fbfaa..ef1a08a0ce7a58797e9f9c8f9cdb32f7c157087d 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -2413,4 +2413,11 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return this.spigot;
     }
     // Spigot end
+
+    // Purpur start
+    @Override
+    public boolean usesPurpurClient() {
+        return getHandle().purpurClient;
+    }
+    // Purpur end
 }