From d7cd2aa94ac35ab602e58484a14ae747b2a68240 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 3 Apr 2016 16:28:17 -0400
Subject: [PATCH] Configurable Grass Spread Tick Rate


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 69ac43d9a9..6b74f810a9 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -252,4 +252,10 @@ public class PaperWorldConfig {
         }
         fixedInhabitedTime = getInt("fixed-chunk-inhabited-time", -1);
     }
+
+    public int grassUpdateRate = 1;
+    private void grassUpdateRate() {
+        grassUpdateRate = Math.max(0, getInt("grass-spread-tick-rate", grassUpdateRate));
+        log("Grass Spread Tick Rate: " + grassUpdateRate);
+    }
 }
diff --git a/src/main/java/net/minecraft/server/BlockDirtSnowSpreadable.java b/src/main/java/net/minecraft/server/BlockDirtSnowSpreadable.java
index da6182deb1..f1174825c2 100644
--- a/src/main/java/net/minecraft/server/BlockDirtSnowSpreadable.java
+++ b/src/main/java/net/minecraft/server/BlockDirtSnowSpreadable.java
@@ -21,6 +21,7 @@ public abstract class BlockDirtSnowSpreadable extends BlockDirtSnow {
     }
 
     public void a(IBlockData iblockdata, World world, BlockPosition blockposition, Random random) {
+        if (this instanceof BlockGrass && world.paperConfig.grassUpdateRate != 1 && (world.paperConfig.grassUpdateRate < 1 || (MinecraftServer.currentTick + blockposition.hashCode()) % world.paperConfig.grassUpdateRate != 0)) { return; } // Paper
         if (!world.isClientSide) {
             if (!a((IWorldReader) world, blockposition)) {
                 // CraftBukkit start
-- 
2.21.0