Optimize getBlockData

Spigot-Server-Patches/0088-Optimize-getBlockData.patch

@@ -0,0 +1,33 @@
+From 114866a0d3665b3f45a5e3e5b95d9ba34ec895fa Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sat, 13 Feb 2016 19:28:50 -0600
+Subject: [PATCH] Optimize getBlockData
+
+Hot method, so reduce # of instructions for the method.
+
+diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
+index 7efacfa..c636da3 100644
+--- a/src/main/java/net/minecraft/server/Chunk.java
++++ b/src/main/java/net/minecraft/server/Chunk.java
+@@ -489,7 +489,18 @@ public class Chunk {
+         }
+     }
+ 
++    // PaperSpigot start - Optimize getBlockData
+     public IBlockData getBlockData(final BlockPosition blockposition) {
++        if (blockposition.getY() >= 0 && blockposition.getY() >> 4 < this.sections.length) {
++            ChunkSection chunksection = this.sections[blockposition.getY() >> 4];
++            if (chunksection != null) {
++                return chunksection.getType(blockposition.getX() & 15, blockposition.getY() & 15, blockposition.getZ() & 15);
++            }
++        }
++        return Blocks.AIR.getBlockData();
++    }
++    public IBlockData getBlockDataSlow(final BlockPosition blockposition) {
++        // PaperSpigot end
+         if (this.world.G() == WorldType.DEBUG_ALL_BLOCK_STATES) {
+             IBlockData iblockdata = null;
+ 
+-- 
+2.7.1
+