From f845b7da720aa36d828d408aa8dcb63f4b109626 Mon Sep 17 00:00:00 2001
From: Alfie Cleveland <alfeh@me.com>
Date: Fri, 30 Jun 2017 11:17:25 +0100
Subject: [PATCH] Don't check bounding box of air


diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 3acf60ab6..fcf159713 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1348,7 +1348,7 @@ public abstract class World implements IBlockAccess {
                         for ( int y = ystart; y < l; y++ )
                         {
                             Block block = chunk.getType(x - cx, y, z - cz );
-                            if ( block != null )
+                            if ( block != null && block != Blocks.AIR) // MineHQ
                             {
                                 // PaperSpigot start - FallingBlocks and TNT collide with specific non-collidable blocks
                                 if (entity.world.paperSpigotConfig.fallingBlocksCollideWithSigns && (entity instanceof EntityTNTPrimed || entity instanceof EntityFallingBlock) &&
@@ -1407,7 +1407,7 @@ public abstract class World implements IBlockAccess {
                             block = Blocks.BEDROCK;
                         }
 
-                        block.a(this, k1, i2, l1, axisalignedbb, this.L, (Entity) null);
+                        if (block != Blocks.AIR) block.a(this, k1, i2, l1, axisalignedbb, this.L, (Entity) null);
                     }
                 }
             }
-- 
2.13.3