Purpur/patches/server/0005-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 ca5291a9573a62cb5c19539cf5c7aceff11f9829..98d92f6d6a98d66e369286b079db2c4db0bd5298 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -274,6 +274,7 @@ 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
 
     public ServerPlayer(MinecraftServer server, ServerLevel world, GameProfile profile) {
         super(world, world.getSharedSpawnPos(), world.getSharedSpawnAngle(), profile);
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 24d48fb4a63c2db19c7f957ad2260415fe1db9fe..56b9a7059e3b9c2bc66961cb50bc6be3d02cf41c 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -3525,6 +3525,7 @@ 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) {
@@ -3549,6 +3550,13 @@ 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 1bada55af5d16437da4d16f9ded55f88a6121eb4..18a32f55727283f73f8d0089a4b1784ae8248076 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -3148,4 +3148,11 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return this.spigot;
     }
     // Spigot end
+
+    // Purpur start
+    @Override
+    public boolean usesPurpurClient() {
+        return getHandle().purpurClient;
+    }
+    // Purpur end
 }