Leaf/leaf-server/minecraft-patches/features/0250-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 2721b999dcfcf1cd5a0919221f2d94da4c93a6e7..2a1a6a0306b781e9ae5c0e3261cb740f37be4a8c 100644
--- a/net/minecraft/server/level/ServerChunkCache.java
+++ b/net/minecraft/server/level/ServerChunkCache.java
@@ -664,7 +664,13 @@ 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 8c8aee9762a08de19e88f0f557ce8ccaaefaa523..65b35ab2348e139727296ed27ce59c1b7eb2d5c7 100644
--- a/net/minecraft/server/level/ServerLevel.java
+++ b/net/minecraft/server/level/ServerLevel.java
@@ -1093,6 +1093,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
 
     public final org.dreeam.leaf.world.DespawnMap despawnMap = new org.dreeam.leaf.world.DespawnMap(paperConfig()); // Leaf - optimize despawn
     public final org.dreeam.leaf.world.NatureSpawnChunkMap natureSpawnChunkMap = new org.dreeam.leaf.world.NatureSpawnChunkMap(); // Leaf - optimize mob spawning
+    public final 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);