From 3d4e01400ff141df97c46c9d70f3f7e1eb455833 Mon Sep 17 00:00:00 2001
From: Aidan Brady <aidancbrady@aol.com>
Date: Mon, 17 Feb 2014 23:46:31 -0500
Subject: [PATCH] Even more Digital Miner optimization

---
 .../common/miner/ThreadMinerSearch.java       | 39 +++++++++++++------
 1 file changed, 28 insertions(+), 11 deletions(-)

diff --git a/common/mekanism/common/miner/ThreadMinerSearch.java b/common/mekanism/common/miner/ThreadMinerSearch.java
index f478723d6..a62e88dee 100644
--- a/common/mekanism/common/miner/ThreadMinerSearch.java
+++ b/common/mekanism/common/miner/ThreadMinerSearch.java
@@ -1,8 +1,11 @@
 package mekanism.common.miner;
 
 import java.util.BitSet;
+import java.util.HashMap;
+import java.util.Map;
 
 import mekanism.api.Coord4D;
+import mekanism.api.ItemInfo;
 import mekanism.common.IBoundingBlock;
 import mekanism.common.tile.TileEntityDigitalMiner;
 import mekanism.common.util.MekanismUtils;
@@ -17,6 +20,8 @@ public class ThreadMinerSearch extends Thread
 	
 	public BitSet oresToMine = new BitSet();
 	
+	public Map<ItemInfo, Boolean> acceptedItems = new HashMap<ItemInfo, Boolean>();
+	
 	public int found = 0;
 	
 	public ThreadMinerSearch(TileEntityDigitalMiner tile)
@@ -70,24 +75,36 @@ public class ThreadMinerSearch extends Thread
 			
 			if(blockID != 0 && blockID != Block.bedrock.blockID)
 			{
-				ItemStack stack = new ItemStack(blockID, 1, meta);
+				ItemInfo info = new ItemInfo(blockID, meta);
+				boolean canFilter = false;
 				
-				if(tileEntity.replaceStack != null && tileEntity.replaceStack.isItemEqual(stack))
+				if(acceptedItems.containsKey(info))
 				{
-					continue;
+					canFilter = acceptedItems.get(info);
 				}
-				
-				boolean hasFilter = false;
-				
-				for(MinerFilter filter : tileEntity.filters)
-				{
-					if(filter.canFilter(stack))
+				else {
+					ItemStack stack = new ItemStack(blockID, 1, meta);
+					
+					if(tileEntity.replaceStack != null && tileEntity.replaceStack.isItemEqual(stack))
 					{
-						hasFilter = true;
+						continue;
 					}
+					
+					boolean hasFilter = false;
+					
+					for(MinerFilter filter : tileEntity.filters)
+					{
+						if(filter.canFilter(stack))
+						{
+							hasFilter = true;
+						}
+					}
+					
+					canFilter = tileEntity.inverse ? !hasFilter : hasFilter;
+					acceptedItems.put(info, canFilter);
 				}
 				
-				if(tileEntity.inverse ? !hasFilter : hasFilter)
+				if(canFilter)
 				{
 					oresToMine.set(i);
 					found++;