From 35478e5d1a29397305e7c48247c5fe853074d2a2 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Tue, 1 Mar 2016 23:58:50 -0600
Subject: [PATCH] Configurable top of nether void damage


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 1ed58f4bb..39d565db1 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -124,4 +124,10 @@ public class PaperWorldConfig {
         if (fallingBlockHeightNerf != 0) log("Falling Block Height Limit set to Y: " + fallingBlockHeightNerf);
         if (entityTNTHeightNerf != 0) log("TNT Entity Height Limit set to Y: " + entityTNTHeightNerf);
     }
+
+    public boolean netherVoidTopDamage;
+    private void netherVoidTopDamage() {
+        netherVoidTopDamage = getBoolean( "nether-ceiling-void-damage", false );
+        log("Top of the nether void damage: " + netherVoidTopDamage);
+    }
 }
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index ca5212f20..f57c5b6a4 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -461,9 +461,15 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
             this.fallDistance *= 0.5F;
         }
 
+        // Paper start - Configurable nether ceiling damage
+        // Extracted to own function
+        /*
         if (this.locY < -64.0D) {
             this.aa();
         }
+        */
+        this.checkAndDoHeightDamage();
+        // Paper end
 
         if (!this.world.isClientSide) {
             this.setFlag(0, this.fireTicks > 0);
@@ -473,6 +479,14 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         this.world.methodProfiler.exit();
     }
 
+    // Paper start
+    protected void checkAndDoHeightDamage() {
+        if (this.locY < -64.0D || (this.world.paperConfig.netherVoidTopDamage && this.world.getWorld().getEnvironment() == org.bukkit.World.Environment.NETHER && this.locY >= 128.0D)) {
+            this.kill();
+        }
+    }
+    // Paper end
+
     protected void E() {
         if (this.portalCooldown > 0) {
             --this.portalCooldown;
@@ -524,6 +538,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         this.fireTicks = 0;
     }
 
+    protected final void kill() { this.aa(); } // Paper - OBFHELPER
     protected void aa() {
         this.die();
     }
diff --git a/src/main/java/net/minecraft/server/EntityMinecartAbstract.java b/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
index 9000d2d7b..a8a64d054 100644
--- a/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
+++ b/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
@@ -193,9 +193,15 @@ public abstract class EntityMinecartAbstract extends Entity implements INamableT
             this.setDamage(this.getDamage() - 1.0F);
         }
 
+        // Paper start - Configurable nether ceiling damage
+        // Extracted to own function
+        /*
         if (this.locY < -64.0D) {
             this.aa();
         }
+        */
+        this.checkAndDoHeightDamage();
+        // Paper end
 
         int i;
 
-- 
2.20.1