From d72aac0ac63b4642cbbc18a52998675af8819a37 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 5872e6b171..47f5f8055e 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -246,4 +246,10 @@ 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 9b25fc2f9e..2b19b6754a 100644
--- a/src/main/java/net/minecraft/server/BlockDirtSnowSpreadable.java
+++ b/src/main/java/net/minecraft/server/BlockDirtSnowSpreadable.java
@@ -29,6 +29,7 @@ public abstract class BlockDirtSnowSpreadable extends BlockDirtSnow {
 
     @Override
     public void tick(IBlockData iblockdata, WorldServer worldserver, BlockPosition blockposition, Random random) {
+        if (this instanceof BlockGrass && worldserver.paperConfig.grassUpdateRate != 1 && (worldserver.paperConfig.grassUpdateRate < 1 || (MinecraftServer.currentTick + blockposition.hashCode()) % worldserver.paperConfig.grassUpdateRate != 0)) { return; } // Paper
         if (!b(iblockdata, (IWorldReader) worldserver, blockposition)) {
             // CraftBukkit start
             if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockFadeEvent(worldserver, blockposition, Blocks.DIRT.getBlockData()).isCancelled()) {
-- 
2.25.1