From b957945130e1dcd74a709f8335efee886512b17c 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 6ccd700..a45bb02 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -141,4 +141,10 @@ public class PaperWorldConfig {
         waterOverLavaFlowSpeed = getInt("water-over-lava-flow-speed", 5);
         log("Water over lava flow speed: " + waterOverLavaFlowSpeed);
     }
+
+    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 a4a6352..b0834dc 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -299,6 +299,13 @@ public abstract class Entity implements ICommandListener {
         this.U();
     }
 
+    /**
+     * Paper - Checks if the feature is enabled and the entity is above the nether world bedrock height
+     */
+    private boolean paperNetherCheck() {
+        return this.world.paperConfig.netherVoidTopDamage && this.world.getWorld().getEnvironment() == org.bukkit.World.Environment.NETHER && this.locY >= 128.0D;
+    }
+
     public void U() {
         this.world.methodProfiler.a("entityBaseTick");
         if (this.isPassenger() && this.by().dead) {
@@ -379,7 +386,7 @@ public abstract class Entity implements ICommandListener {
             this.fallDistance *= 0.5F;
         }
 
-        if (this.locY < -64.0D) {
+        if (this.locY < -64.0D || paperNetherCheck()) { // Paper - Configurable top-of-nether void damage)
             this.Y();
         }
 
-- 
2.7.2