From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Sat, 13 Aug 2022 17:27:18 +0800
Subject: [PATCH] Optimize mob spawning

This patch is Powered by Pufferfish(https://github.com/pufferfish-gg/Pufferfish)

diff --git a/src/main/java/net/minecraft/world/level/NaturalSpawner.java b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
index 15d266fc97eb73338f4f6fb2cfe25d6861e79810..70773c525bcf33d4d4764ce4a16dedddc423b02b 100644
--- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
@@ -173,7 +173,7 @@ public final class NaturalSpawner {
                 }
                 difference = (minDiff == Integer.MAX_VALUE) ? 0 : minDiff;
             }
-            if ((spawnAnimals || !enumcreaturetype.isFriendly()) && (spawnMonsters || enumcreaturetype.isFriendly()) && (rareSpawn || !enumcreaturetype.isPersistent()) && difference > 0) {
+            if ((spawnAnimals || !enumcreaturetype.isFriendly()) && (spawnMonsters || enumcreaturetype.isFriendly()) && (rareSpawn || !enumcreaturetype.isPersistent()) && difference > 0 && (!world.paperConfig().entities.spawning.perPlayerMobSpawns || info.canSpawnForCategory(enumcreaturetype, chunk.getPos(), limit))) { // Leaves - be vanilla
                 // Paper end
                 // CraftBukkit end
                 Objects.requireNonNull(info);
diff --git a/src/main/java/top/leavesmc/leaves/LeavesConfig.java b/src/main/java/top/leavesmc/leaves/LeavesConfig.java
index 937e84214223e978b3b6bc6107974c61e2d0f558..af84cbaf93392d90b4c74ef5a0eb7bd163b76ce5 100644
--- a/src/main/java/top/leavesmc/leaves/LeavesConfig.java
+++ b/src/main/java/top/leavesmc/leaves/LeavesConfig.java
@@ -226,7 +226,21 @@ public final class LeavesConfig {
         }
         noChatSign = getBoolean("settings.misc.no-chat-sign", noChatSign);
     }
-    
+
+    public static boolean asyncMobSpawning = false;
+    private static boolean asyncMobSpawningLock = false;
+    private static void asyncMobSpawning() {
+        if (!asyncMobSpawningLock) {
+            asyncMobSpawning = getBoolean("settings.performance.async-mob-spawning", asyncMobSpawning);
+            asyncMobSpawningLock = true;
+        }
+        
+        if (asyncMobSpawning) {
+            asyncMobSpawning = false;
+            LeavesLogger.LOGGER.severe("Async MobSpawning is updating, it can't work");
+        }
+    }
+
     public static final class WorldConfig {
 
         public final String worldName;