LeavesMC/patches/server/0055-Appleskin-Protocol.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Wed, 25 Jan 2023 11:03:53 +0800
Subject: [PATCH] Appleskin Protocol


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index e7f1e2440c067ebf8c1c2d175d413de6d27f5ff7..c358f6de2947e16da54acdc7809c70ffae331944 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1602,6 +1602,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         this.profiler.popPush("server gui refresh");
 
         top.leavesmc.leaves.protocol.BBORProtocol.tick(); // Leaves - bbor
+        top.leavesmc.leaves.protocol.AppleSkinProtocol.tick(); // Leaves - appleskin
 
         MinecraftTimings.tickablesTimer.startTiming(); // Spigot // Paper
         for (int i = 0; i < this.tickables.size(); ++i) {
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 3994583f24bd558e7b0f7649e27fcea79da32026..dc1c9c106593aed9ede4ea4a09dc085c89758cde 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -363,6 +363,7 @@ public abstract class PlayerList {
         top.leavesmc.leaves.protocol.PcaSyncProtocol.onJoin(player); // Leaves - pca
         top.leavesmc.leaves.protocol.BBORProtocol.onPlayerLoggedIn(player); // Leaves - bbor
         top.leavesmc.leaves.protocol.JadeProtocol.onPlayerJoin(player); // Leaves - Jade
+        top.leavesmc.leaves.protocol.AppleSkinProtocol.onPlayerLoggedIn(player); // Leaves - appleskin
 
         final net.kyori.adventure.text.Component jm = playerJoinEvent.joinMessage();
 
@@ -607,6 +608,7 @@ public abstract class PlayerList {
     }
     public net.kyori.adventure.text.Component remove(ServerPlayer entityplayer, net.kyori.adventure.text.Component leaveMessage) {
         top.leavesmc.leaves.protocol.BBORProtocol.onPlayerLoggedOut(entityplayer); // Leaves - bbor
+        top.leavesmc.leaves.protocol.AppleSkinProtocol.onPlayerLoggedOut(entityplayer); // Leaves - appleskin
         // Paper end
         ServerLevel worldserver = entityplayer.serverLevel();
 
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 9fba7105b7e70ad05c243ee6cec27a8ebe875d83..75c4b20c1637f4b2e1a77450d30a21b4d2db5af0 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1080,6 +1080,13 @@ public final class CraftServer implements Server {
             top.leavesmc.leaves.protocol.JadeProtocol.enableAllPlayer();
         }
         // Leaves end - Jade
+        // Leaves start - appleskin
+        if (top.leavesmc.leaves.LeavesConfig.appleskinProtocol) {
+            top.leavesmc.leaves.protocol.AppleSkinProtocol.enableAllPlayer();
+        } else {
+            top.leavesmc.leaves.protocol.AppleSkinProtocol.disableAllPlayer();
+        }
+        // Leaves end - appleskin
         for (ServerLevel world : this.console.getAllLevels()) {
             // world.serverLevelData.setDifficulty(config.difficulty); // Paper - per level difficulty
             world.setSpawnSettings(world.serverLevelData.getDifficulty() != Difficulty.PEACEFUL && config.spawnMonsters, config.spawnAnimals); // Paper - per level difficulty (from MinecraftServer#setDifficulty(ServerLevel, Difficulty, boolean))
diff --git a/src/main/java/top/leavesmc/leaves/protocol/AppleSkinProtocol.java b/src/main/java/top/leavesmc/leaves/protocol/AppleSkinProtocol.java
new file mode 100644
index 0000000000000000000000000000000000000000..6f0b2140df822dc86e360837780768f2f5203041
--- /dev/null
+++ b/src/main/java/top/leavesmc/leaves/protocol/AppleSkinProtocol.java
@@ -0,0 +1,95 @@
+package top.leavesmc.leaves.protocol;
+
+import io.netty.buffer.Unpooled;
+import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.food.FoodData;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+import top.leavesmc.leaves.LeavesConfig;
+import top.leavesmc.leaves.util.ProtocolUtils;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+
+public class AppleSkinProtocol {
+
+    public static final String PROTOCOL_ID = "appleskin";
+
+    private static final ResourceLocation SATURATION_KEY = id("saturation_sync");
+    private static final ResourceLocation EXHAUSTION_KEY = id("exhaustion_sync");
+
+    private static final Map<UUID, Float> previousSaturationLevels = new HashMap<>();
+    private static final Map<UUID, Float> previousExhaustionLevels = new HashMap<>();
+
+    private static final float MINIMUM_EXHAUSTION_CHANGE_THRESHOLD = 0.01F;
+
+    private static final Set<ServerPlayer> players = new HashSet<>();
+
+    @Contract("_ -> new")
+    public static @NotNull ResourceLocation id(String path) {
+        return new ResourceLocation(PROTOCOL_ID, path);
+    }
+
+    public static void enableAllPlayer() {
+        for (ServerPlayer player : MinecraftServer.getServer().getPlayerList().getPlayers()) {
+            onPlayerLoggedIn(player);
+        }
+    }
+
+    public static void disableAllPlayer() {
+        for (ServerPlayer player : MinecraftServer.getServer().getPlayerList().getPlayers()) {
+            onPlayerLoggedOut(player);
+        }
+    }
+
+    public static void onPlayerLoggedIn(@NotNull ServerPlayer player) {
+        if (LeavesConfig.appleskinProtocol) {
+            players.add(player);
+            resetPlayerData(player);
+        }
+    }
+
+    public static void onPlayerLoggedOut(@NotNull ServerPlayer player) {
+        if (LeavesConfig.appleskinProtocol) {
+            players.remove(player);
+            resetPlayerData(player);
+        }
+    }
+
+    private static void resetPlayerData(@NotNull ServerPlayer player) {
+        previousExhaustionLevels.remove(player.getUUID());
+        previousSaturationLevels.remove(player.getUUID());
+    }
+
+    public static void tick() {
+        if (LeavesConfig.appleskinProtocol) {
+            for (ServerPlayer player : players) {
+                FoodData data = player.getFoodData();
+
+                float saturation = data.getSaturationLevel();
+                Float previousSaturation = previousSaturationLevels.get(player.getUUID());
+                if (previousSaturation == null || saturation != previousSaturation) {
+                    FriendlyByteBuf buf = new FriendlyByteBuf(Unpooled.buffer());
+                    buf.writeFloat(saturation);
+                    ProtocolUtils.sendPayloadPacket(player, SATURATION_KEY, buf);
+                    previousSaturationLevels.put(player.getUUID(), saturation);
+                }
+
+                float exhaustion = data.getExhaustionLevel();
+                Float previousExhaustion = previousExhaustionLevels.get(player.getUUID());
+                if (previousExhaustion == null || Math.abs(exhaustion - previousExhaustion) >= MINIMUM_EXHAUSTION_CHANGE_THRESHOLD) {
+                    FriendlyByteBuf buf = new FriendlyByteBuf(Unpooled.buffer());
+                    buf.writeFloat(exhaustion);
+                    ProtocolUtils.sendPayloadPacket(player, EXHAUSTION_KEY, buf);
+                    previousExhaustionLevels.put(player.getUUID(), exhaustion);
+                }
+            }
+        }
+    }
+}