From 8a2a12231d353beb66545da4fd35bcb90a3a6173 Mon Sep 17 00:00:00 2001
From: Iceee <andrew@opticgaming.tv>
Date: Fri, 28 Nov 2014 12:11:03 -0600
Subject: [PATCH] Remove specific entities that fly through an unloaded chunk


diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 1e5f057..bf9dfbf 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -119,6 +119,7 @@ public abstract class Entity implements ICommandListener {
     private final CommandObjectiveExecutor as;
     public boolean valid; // CraftBukkit
     public org.bukkit.projectiles.ProjectileSource projectileSource; // CraftBukkit - For projectiles only
+    public boolean inUnloadedChunk = false; // PaperSpigot - Remove entities in unloaded chunks
 
     // Spigot start
     public CustomTimingsHandler tickTimer = org.bukkit.craftbukkit.SpigotTimings.getEntityTimings(this); // Spigot
diff --git a/src/main/java/net/minecraft/server/EntityEnderPearl.java b/src/main/java/net/minecraft/server/EntityEnderPearl.java
index 1658cb0..63d88e6 100644
--- a/src/main/java/net/minecraft/server/EntityEnderPearl.java
+++ b/src/main/java/net/minecraft/server/EntityEnderPearl.java
@@ -19,6 +19,12 @@ public class EntityEnderPearl extends EntityProjectile {
             movingobjectposition.entity.damageEntity(DamageSource.projectile(this, entityliving), 0.0F);
         }
 
+        // PaperSpigot start - Remove entities in unloaded chunks
+        if (inUnloadedChunk && world.paperSpigotConfig.removeUnloadedEnderPearls) {
+            die();
+        }
+        // PaperSpigot end
+
         for (int i = 0; i < 32; ++i) {
             this.world.addParticle(EnumParticle.PORTAL, this.locX, this.locY + this.random.nextDouble() * 2.0D, this.locZ, this.random.nextGaussian(), 0.0D, this.random.nextGaussian(), new int[0]);
         }
diff --git a/src/main/java/net/minecraft/server/EntityFallingBlock.java b/src/main/java/net/minecraft/server/EntityFallingBlock.java
index 81a5dc9..336e575 100644
--- a/src/main/java/net/minecraft/server/EntityFallingBlock.java
+++ b/src/main/java/net/minecraft/server/EntityFallingBlock.java
@@ -70,6 +70,12 @@ public class EntityFallingBlock extends Entity {
             this.motY -= 0.03999999910593033D;
             this.move(this.motX, this.motY, this.motZ);
 
+            // PaperSpigot start - Remove entities in unloaded chunks
+            if (this.inUnloadedChunk && world.paperSpigotConfig.removeUnloadedFallingBlocks) {
+                this.die();
+            }
+            // PaperSpigot end
+
             // PaperSpigot start - Drop falling blocks above the specified height
             if (this.world.paperSpigotConfig.fallingBlockHeightNerf != 0 && this.locY > this.world.paperSpigotConfig.fallingBlockHeightNerf) {
                 if (this.dropItem) {
diff --git a/src/main/java/net/minecraft/server/EntityTNTPrimed.java b/src/main/java/net/minecraft/server/EntityTNTPrimed.java
index 4823698..7b856ef 100644
--- a/src/main/java/net/minecraft/server/EntityTNTPrimed.java
+++ b/src/main/java/net/minecraft/server/EntityTNTPrimed.java
@@ -47,6 +47,14 @@ public class EntityTNTPrimed extends Entity {
         this.lastZ = this.locZ;
         this.motY -= 0.03999999910593033D;
         this.move(this.motX, this.motY, this.motZ);
+
+        // PaperSpigot start - Remove entities in unloaded chunks
+        if (this.inUnloadedChunk && world.paperSpigotConfig.removeUnloadedTNTEntities) {
+            this.die();
+            this.fuseTicks = 2;
+        }
+        // PaperSpigot end
+
         this.motX *= 0.9800000190734863D;
         this.motY *= 0.9800000190734863D;
         this.motZ *= 0.9800000190734863D;
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index bdb4a1b..d860a1b 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1152,6 +1152,7 @@ public abstract class World implements IBlockAccess {
             {
                 if ( !this.isChunkLoaded( chunkx, chunkz, true ) )
                 {
+                    entity.inUnloadedChunk = true; // PaperSpigot - Remove entities in unloaded chunks
                     continue;
                 }
                 int cz = chunkz << 4;
@@ -1569,6 +1570,14 @@ public abstract class World implements IBlockAccess {
         if (!org.spigotmc.ActivationRange.checkIfActive(entity)) {
             entity.ticksLived++;
             entity.inactiveTick();
+            // PaperSpigot start - Remove entities in unloaded chunks
+            if (entity instanceof EntityEnderPearl || (!this.isChunkLoaded(i, j, true) &&
+                    (entity instanceof EntityFallingBlock && this.paperSpigotConfig.removeUnloadedFallingBlocks) ||
+                    (entity instanceof EntityTNTPrimed && this.paperSpigotConfig.removeUnloadedTNTEntities))) {
+                 entity.inUnloadedChunk = true;
+                entity.die();
+            }
+            // PaperSpigot end
         } else {
             entity.tickTimer.startTiming(); // Spigot
             // CraftBukkit end
diff --git a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
index 0642f12..9507ab5 100644
--- a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
+++ b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
@@ -170,4 +170,14 @@ public class PaperSpigotWorldConfig
         removeInvalidMobSpawnerTEs = getBoolean( "remove-invalid-mob-spawner-tile-entities", true );
         log( "Remove invalid mob spawner tile entities: " + removeInvalidMobSpawnerTEs );
     }
+
+    public boolean removeUnloadedEnderPearls;
+    public boolean removeUnloadedTNTEntities;
+    public boolean removeUnloadedFallingBlocks;
+    private void removeUnloaded()
+    {
+        removeUnloadedEnderPearls = getBoolean( "remove-unloaded.enderpearls", true );
+        removeUnloadedTNTEntities = getBoolean( "remove-unloaded.tnt-entities", true );
+        removeUnloadedFallingBlocks = getBoolean( "remove-unloaded.falling-blocks", true );
+    }
 }
-- 
1.9.1