From 5812a23872e2c522bc10842956f65d1e5101b619 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 20 Aug 2014 18:12:32 -0400
Subject: [PATCH] Limit TNT Detonations per tick

This gives a per-world control on how much TNT will be processed per-tick,
preventing a massive TNT detonation from lagging out the server.

diff --git a/src/main/java/net/minecraft/server/EntityTNTPrimed.java b/src/main/java/net/minecraft/server/EntityTNTPrimed.java
index e467aff..35ed2a6 100644
--- a/src/main/java/net/minecraft/server/EntityTNTPrimed.java
+++ b/src/main/java/net/minecraft/server/EntityTNTPrimed.java
@@ -45,6 +45,7 @@ public class EntityTNTPrimed extends Entity {
     }
 
     public void m() {
+        if (world.spigotConfig.currentPrimedTnt++ > world.spigotConfig.maxTntTicksPerTick) { return; } // Spigot
         this.lastX = this.locX;
         this.lastY = this.locY;
         this.lastZ = this.locZ;
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 0d6f5af..c2ca2df 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -625,6 +625,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
 
         this.worldProvider.r();
         super.tickEntities();
+        spigotConfig.currentPrimedTnt = 0; // Spigot
     }
 
     protected void l() {
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index 4cbcd14..a4d7ebb 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -264,4 +264,15 @@ public class SpigotWorldConfig
         combatExhaustion = (float) getDouble( "hunger.combat-exhaustion", 0.3 );
         regenExhaustion = (float) getDouble( "hunger.regen-exhaustion", 3 );
     }
+
+    public int currentPrimedTnt = 0;
+    public int maxTntTicksPerTick;
+    private void maxTntPerTick() {
+        if ( SpigotConfig.version < 7 )
+        {
+            set( "max-tnt-per-tick", 100 );
+        }
+        maxTntTicksPerTick = getInt( "max-tnt-per-tick", 100 );
+        log( "Max TNT Explosions: " + maxTntTicksPerTick );
+    }
 }
-- 
2.5.0