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 8efbbd379244e3ed54d4aba199037cc20ccd096a..86cf69de7a35f1ac8e2c56f988e74832332470d2 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -281,6 +281,7 @@ public class ServerPlayer extends Player {
     public com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent playerNaturallySpawnedEvent; // Paper
     public @Nullable String clientBrandName = null; // Paper - Brand name
     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
 
     // Paper start - replace player chunk loader
     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));
diff --git a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
index 77cd2b73e4d499beca16962a6b3d1fefe279cd87..13e064451c4d48e873061b6dea431a6b101de2ee 100644
--- a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
@@ -55,6 +55,7 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
     private volatile boolean suspendFlushingOnServerThread = false;
     private static final long KEEPALIVE_LIMIT = Long.getLong("paper.playerconnection.keepalive", 30) * 1000; // Paper - provide property to set keepalive limit
     protected static final ResourceLocation MINECRAFT_BRAND = new ResourceLocation("brand"); // Paper - Brand support
+    protected static final ResourceLocation PURPUR_CLIENT = new ResourceLocation("purpur", "client"); // Purpur
 
     public ServerCommonPacketListenerImpl(MinecraftServer minecraftserver, Connection networkmanager, CommonListenerCookie commonlistenercookie, ServerPlayer player) { // CraftBukkit
         this.server = minecraftserver;
@@ -137,6 +138,13 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
                 ServerGamePacketListenerImpl.LOGGER.error("Couldn\'t register custom payload", ex);
                 this.disconnect("Invalid payload REGISTER!", org.bukkit.event.player.PlayerKickEvent.Cause.INVALID_PAYLOAD); // Paper - kick event cause
             }
+        // Purpur start
+        } else if (identifier.equals(PURPUR_CLIENT)) {
+            try {
+                player.purpurClient = true;
+            } catch (Exception ignore) {
+            }
+        // Purpur end
         } else if (identifier.equals(ServerCommonPacketListenerImpl.CUSTOM_UNREGISTER)) {
             try {
                 String channels = payload.toString(com.google.common.base.Charsets.UTF_8);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index ed41decbf0522c516b3608569d5719687105e25b..67bb2541fff19f0a48c7b1289e34749ece632d56 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -3315,4 +3315,11 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return this.spigot;
     }
     // Spigot end
+
+    // Purpur start
+    @Override
+    public boolean usesPurpurClient() {
+        return getHandle().purpurClient;
+    }
+    // Purpur end
 }