Leaf/leaf-server/minecraft-patches/features/0269-optimize-random-tick.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: hayanesuru <hayanesuru@outlook.jp>
Date: Fri, 6 Jun 2025 20:46:10 +0900
Subject: [PATCH] optimize random tick


diff --git a/net/minecraft/server/level/ServerChunkCache.java b/net/minecraft/server/level/ServerChunkCache.java
index 1c23d82a2034bc4ae61ee9bc6c74b39940d4fc2b..57f45e571b92ff0b4499a97da33c8be746d8abd5 100644
--- a/net/minecraft/server/level/ServerChunkCache.java
+++ b/net/minecraft/server/level/ServerChunkCache.java
@@ -648,7 +648,13 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
             list.clear();
         }
 
-        this.iterateTickingChunksFaster(); // Paper - chunk tick iteration optimisations
+        // Leaf start - optimize random tick
+        if (org.dreeam.leaf.config.modules.opt.OptimizeRandomTick.enabled) {
+            this.level.randomTickSystem.tick(this.level);
+        } else {
+            this.iterateTickingChunksFaster(); // Paper - chunk tick iteration optimisations
+        }
+        // Leaf end - optimize random tick
         if (_boolean) {
             this.level.tickCustomSpawners(this.spawnEnemies, this.spawnFriendlies);
         }
diff --git a/net/minecraft/server/level/ServerLevel.java b/net/minecraft/server/level/ServerLevel.java
index fc61a7083232148397a0b330ce2a4d70ba38543d..d34a7cfa3b923d59ade35ce4c43cfd3f1477e057 100644
--- a/net/minecraft/server/level/ServerLevel.java
+++ b/net/minecraft/server/level/ServerLevel.java
@@ -1114,6 +1114,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
 
     private int currentIceAndSnowTick = 0; protected void resetIceAndSnowTick() { this.currentIceAndSnowTick = this.simpleRandom.nextInt(16); } // Gale - Airplane - optimize random calls in chunk ticking
 
+    public org.dreeam.leaf.world.RandomTickSystem randomTickSystem = new org.dreeam.leaf.world.RandomTickSystem(); // Leaf - optimize random tick
     public void tickChunk(LevelChunk chunk, int randomTickSpeed) {
         final net.minecraft.world.level.levelgen.BitRandomSource simpleRandom = this.simpleRandom; // Paper - optimise random ticking // Leaf - Faster random generator - upcasting
         ChunkPos pos = chunk.getPos();
diff --git a/net/minecraft/world/level/chunk/LevelChunk.java b/net/minecraft/world/level/chunk/LevelChunk.java
index a3674ddb883eecb255279375a5e2eece7e016c0f..c3ecdd80efad340c9fa0ea6913db9a3362b53ad4 100644
--- a/net/minecraft/world/level/chunk/LevelChunk.java
+++ b/net/minecraft/world/level/chunk/LevelChunk.java
@@ -152,6 +152,10 @@ public class LevelChunk extends ChunkAccess implements ca.spottedleaf.moonrise.p
     }
     // Gale end - Airplane - optimize random calls in chunk ticking - instead of using a random every time the chunk is ticked, define when lightning strikes preemptively
 
+    // Leaf start - optimize random tick
+    public boolean leaf$tickingBlocksDirty = true;
+    public int[] leaf$tickingCount = {};
+    // Leaf end - optimize random tick
     public LevelChunk(Level level, ChunkPos pos) {
         this(level, pos, UpgradeData.EMPTY, new LevelChunkTicks<>(), new LevelChunkTicks<>(), 0L, null, null, null);
     }
@@ -416,6 +420,11 @@ public class LevelChunk extends ChunkAccess implements ca.spottedleaf.moonrise.p
             if (blockState == state) {
                 return null;
             } else {
+                // Leaf start - optimize random tick
+                if (blockState.isRandomlyTicking() != state.isRandomlyTicking()) {
+                    leaf$tickingBlocksDirty = true;
+                }
+                // Leaf end - optimize random tick
                 Block block = state.getBlock();
                 this.heightmaps.get(Heightmap.Types.MOTION_BLOCKING).update(i, y, i2, state);
                 this.heightmaps.get(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES).update(i, y, i2, state);