From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Tue, 26 Sep 2023 19:00:41 +0800
Subject: [PATCH] Leaves: Protocol Core

TODO: Check whether Leaves's Return-nether-portal-fix.patch improves performance
and change store way to sql maybe?

Original license: GPLv3
Original project: https://github.com/LeavesMC/Leaves

Commit: 99b3aafce1f162c68a771fe56d77f33648636b7d

diff --git a/net/minecraft/network/protocol/common/custom/CustomPacketPayload.java b/net/minecraft/network/protocol/common/custom/CustomPacketPayload.java
index fb263fa1f30a7dfcb7ec2656abfb38e5fe88eac9..7e19dfe90a63ff26f03b95891dacb7360bba5a3c 100644
--- a/net/minecraft/network/protocol/common/custom/CustomPacketPayload.java
+++ b/net/minecraft/network/protocol/common/custom/CustomPacketPayload.java
@@ -40,13 +40,23 @@ public interface CustomPacketPayload {
 
             @Override
             public void encode(B buffer, CustomPacketPayload value) {
+                // Leaves start - protocol core
+                if (value instanceof org.leavesmc.leaves.protocol.core.LeavesCustomPayload<?> payload) {
+                    buffer.writeResourceLocation(payload.id());
+                    payload.write(buffer);
+                    return;
+                }
+                // Leaves end - protocol core
                 this.writeCap(buffer, value.type(), value);
             }
 
             @Override
             public CustomPacketPayload decode(B buffer) {
                 ResourceLocation resourceLocation = buffer.readResourceLocation();
-                return (CustomPacketPayload)this.findCodec(resourceLocation).decode(buffer);
+                // Leaves start - protocol core
+                var payload = org.leavesmc.leaves.protocol.core.LeavesProtocolManager.decode(resourceLocation, buffer);
+                return java.util.Objects.requireNonNullElseGet(payload, () -> this.findCodec(resourceLocation).decode(buffer));
+                // Leaves end - protocol core
             }
         };
     }
diff --git a/net/minecraft/server/MinecraftServer.java b/net/minecraft/server/MinecraftServer.java
index 047a09cf4a2c32e714aacedeccb0928ef2c7dfa9..dddbb18992348fb7e8a6552423d134809cd7fdbc 100644
--- a/net/minecraft/server/MinecraftServer.java
+++ b/net/minecraft/server/MinecraftServer.java
@@ -1747,6 +1747,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
             GameTestTicker.SINGLETON.tick();
         }
 
+        org.leavesmc.leaves.protocol.core.LeavesProtocolManager.handleTick(); // Leaves - protocol
+
         for (int i = 0; i < this.tickables.size(); i++) {
             this.tickables.get(i).run();
         }
diff --git a/net/minecraft/server/network/ServerCommonPacketListenerImpl.java b/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
index b72b3fdfad0be25f6ece6b934c47a748509de5d6..3b15b80512834686ffa48b97d3e133d71bf27d82 100644
--- a/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
@@ -151,6 +151,11 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
 
     @Override
     public void handleCustomPayload(ServerboundCustomPayloadPacket packet) {
+        // Leaves start - protocol
+        if (packet.payload() instanceof org.leavesmc.leaves.protocol.core.LeavesCustomPayload<?> leavesPayload) {
+            org.leavesmc.leaves.protocol.core.LeavesProtocolManager.handlePayload(player, leavesPayload);
+        }
+        // Leaves end - protocol
         // Paper start
         if (packet.payload() instanceof net.minecraft.network.protocol.common.custom.BrandPayload(String brand)) {
             this.player.clientBrandName = brand;
@@ -209,6 +214,7 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
         final String channel = new String(data, from, length, java.nio.charset.StandardCharsets.US_ASCII);
         if (register) {
             this.getCraftPlayer().addChannel(channel);
+            org.leavesmc.leaves.protocol.core.LeavesProtocolManager.handleMinecraftRegister(channel, player); // Leaves - protocol
         } else {
             this.getCraftPlayer().removeChannel(channel);
         }
diff --git a/net/minecraft/server/players/PlayerList.java b/net/minecraft/server/players/PlayerList.java
index 9a2f2dc1eb471776de6049590cb16e8a061aa24e..e0dbafdbf36ab8597827ac7a828981013ec16bde 100644
--- a/net/minecraft/server/players/PlayerList.java
+++ b/net/minecraft/server/players/PlayerList.java
@@ -341,6 +341,8 @@ public abstract class PlayerList {
 
         player.didPlayerJoinEvent = true; // Gale - EMC - do not process chat/commands before player has joined
 
+        org.leavesmc.leaves.protocol.core.LeavesProtocolManager.handlePlayerJoin(player); // Leaves - protocol
+
         final net.kyori.adventure.text.Component jm = playerJoinEvent.joinMessage();
 
         if (jm != null && !jm.equals(net.kyori.adventure.text.Component.empty())) { // Paper - Adventure
@@ -518,6 +520,7 @@ public abstract class PlayerList {
         return this.remove(player, net.kyori.adventure.text.Component.translatable("multiplayer.player.left", net.kyori.adventure.text.format.NamedTextColor.YELLOW, io.papermc.paper.configuration.GlobalConfiguration.get().messages.useDisplayNameInQuitMessage ? player.getBukkitEntity().displayName() : io.papermc.paper.adventure.PaperAdventure.asAdventure(player.getDisplayName())));
     }
     public net.kyori.adventure.text.Component remove(ServerPlayer player, net.kyori.adventure.text.Component leaveMessage) {
+        org.leavesmc.leaves.protocol.core.LeavesProtocolManager.handlePlayerLeave(player); // Leaves - protocol
         // Paper end - Fix kick event leave message not being sent
         org.purpurmc.purpur.task.BossBarTask.removeFromAll(player.getBukkitEntity()); // Purpur - Implement TPSBar
         ServerLevel serverLevel = player.serverLevel();