From 0000000000000000000000000000000000000000 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 a0688ef7eb38e7c156193db3d94c44a3c290d8f2..53692c9a72a75cb5280165a99c95667928eec753 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -289,4 +289,10 @@ 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/world/level/block/SpreadingSnowyDirtBlock.java b/src/main/java/net/minecraft/world/level/block/SpreadingSnowyDirtBlock.java
index 954defe131bdcd81178e3bd31755eb18b9aef026..be5ad056571f6522a205b8e9de8940ad1fe8c988 100644
--- a/src/main/java/net/minecraft/world/level/block/SpreadingSnowyDirtBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/SpreadingSnowyDirtBlock.java
@@ -3,6 +3,7 @@ package net.minecraft.world.level.block;
 import java.util.Random;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
+import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.tags.FluidTags;
 import net.minecraft.tags.Tag;
@@ -40,7 +41,8 @@ public abstract class SpreadingSnowyDirtBlock extends SnowyDirtBlock {
 
     @Override
     public void randomTick(BlockState state, ServerLevel world, BlockPos pos, Random random) {
-        if (!SpreadingSnowyDirtBlock.canBeGrass(state, world, pos)) {
+        if (this instanceof GrassBlock && world.paperConfig.grassUpdateRate != 1 && (world.paperConfig.grassUpdateRate < 1 || (MinecraftServer.currentTick + pos.hashCode()) % world.paperConfig.grassUpdateRate != 0)) { return; } // Paper
+        if (!SpreadingSnowyDirtBlock.canBeGrass(state, (LevelReader) world, pos)) {
             // CraftBukkit start
             if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockFadeEvent(world, pos, Blocks.DIRT.defaultBlockState()).isCancelled()) {
                 return;