From b8fafeba3b1e7cd98e3847f52b3de3cf25d50f0a 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/world/entity/item/EntityTNTPrimed.java b/src/main/java/net/minecraft/world/entity/item/EntityTNTPrimed.java
index 62ca85f3c..5ea5333bf 100644
--- a/src/main/java/net/minecraft/world/entity/item/EntityTNTPrimed.java
+++ b/src/main/java/net/minecraft/world/entity/item/EntityTNTPrimed.java
@@ -72,6 +72,7 @@ public class EntityTNTPrimed extends Entity implements TraceableEntity {
 
     @Override
     public void tick() {
+        if (this.level().spigotConfig.maxTntTicksPerTick > 0 && ++this.level().spigotConfig.currentPrimedTnt > this.level().spigotConfig.maxTntTicksPerTick) { return; } // Spigot
         if (!this.isNoGravity()) {
             this.setDeltaMovement(this.getDeltaMovement().add(0.0D, -0.04D, 0.0D));
         }
diff --git a/src/main/java/net/minecraft/world/level/World.java b/src/main/java/net/minecraft/world/level/World.java
index a23fdd702..879422b16 100644
--- a/src/main/java/net/minecraft/world/level/World.java
+++ b/src/main/java/net/minecraft/world/level/World.java
@@ -663,6 +663,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
         timings.tileEntityTick.stopTiming(); // Spigot
         this.tickingBlockEntities = false;
         gameprofilerfiller.pop();
+        spigotConfig.currentPrimedTnt = 0; // Spigot
     }
 
     public <T extends Entity> void guardEntityTick(Consumer<T> consumer, T t0) {
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index 1b5d1e283..8411f9e57 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -356,4 +356,15 @@ public class SpigotWorldConfig
         sprintMultiplier = (float) getDouble( "hunger.sprint-multiplier", 0.1 );
         otherMultiplier = (float) getDouble( "hunger.other-multiplier", 0.0 );
     }
+
+    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 );
+    }
 }
-- 
2.43.0