workss

Fix item amount not refreshing when inserted/extracted

gradle.properties

@@ -4,7 +4,7 @@ aebuild=7
 aegroup=appeng
 aebasename=appliedenergistics2
 extended=extended_life
-extendedversion=v50g
+extendedversion=v52b
 #########################################################
 # Versions                                              #
 #########################################################
@@ -26,6 +26,7 @@ cofhcore_version=1.12.2-4.5.2.19
 crafttweaker_version=4.1.8.9
 inventorytweaks_version=1.63
 ctm_version=MC1.12.2-0.3.1.16
+forestry_version=5.8.2.387
 #########################################################
 # Deployment                                            #
 #########################################################

gradle/scripts/dependencies.gradle

@@ -97,6 +97,8 @@ dependencies {
     compileOnly "inventory-tweaks:InventoryTweaks:${inventorytweaks_version}:api"
     compileOnly "team.chisel.ctm:CTM:${ctm_version}"
     compileOnly "de.ellpeck.actuallyadditions:ActuallyAdditions:1.12.2-r152.16:api"
+    deobfCompile "net.sengir.forestry:forestry_${minecraft_version}:$forestry_version"
+
 
     // at runtime, use the full JEI jar
     runtime "mezz.jei:jei_${minecraft_version}:${jei_version}"

src/main/java/appeng/client/gui/AEBaseGui.java

@@ -33,6 +33,7 @@ import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
 import appeng.container.slot.*;
+import appeng.util.Platform;
 import com.google.common.base.Joiner;
 import com.google.common.base.Stopwatch;
 import com.google.common.collect.Lists;
@@ -159,7 +160,7 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 
 		final List<Slot> slots = this.getInventorySlots();
 		final Iterator<Slot> i = slots.iterator();
-		while( i.hasNext() )
+		while ( i.hasNext() )
 		{
 			if( i.next() instanceof SlotME )
 			{
@@ -208,13 +209,17 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 			}
 		}
 		GlStateManager.enableDepth();
-		bookmarkedJEIghostItem(mouseX,mouseY);
+		if( Platform.isModLoaded( "jei" ) )
+		{
+			bookmarkedJEIghostItem( mouseX, mouseY );
+		}
 		GlStateManager.disableDepth();
 	}
 
-	void bookmarkedJEIghostItem(final int mouseX, final int mouseY) {
-
-		if (!isJeiGhostItem)
+	@Optional.Method( modid = "jei" )
+	void bookmarkedJEIghostItem( final int mouseX, final int mouseY )
+	{
+		if( !isJeiGhostItem )
 		{
 			bookmarkedIngredient = runtime.getBookmarkOverlay().getIngredientUnderMouse();
 		}
@@ -248,7 +253,9 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 			}
 		}
 	}
-	private void drawTargets(int mouseX, int mouseY) {
+
+	private void drawTargets( int mouseX, int mouseY )
+	{
 		GlStateManager.disableLighting();
 		for( IGhostIngredientHandler.Target target : hoveredIngredientTargets )
 		{
@@ -377,17 +384,13 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 					final AppEngSlot aeSlot = (AppEngSlot) slot;
 					if( aeSlot.isSlotEnabled() )
 					{
-						this.drawTexturedModalRect( ox + aeSlot.xPos - 1, oy + aeSlot.yPos - 1, optionalSlot.getSourceX() - 1, optionalSlot.getSourceY() - 1,
-								18,
-								18 );
+						this.drawTexturedModalRect( ox + aeSlot.xPos - 1, oy + aeSlot.yPos - 1, optionalSlot.getSourceX() - 1, optionalSlot.getSourceY() - 1, 18, 18 );
 					}
 					else
 					{
 						GlStateManager.color( 1.0F, 1.0F, 1.0F, 0.4F );
 						GlStateManager.enableBlend();
-						this.drawTexturedModalRect( ox + aeSlot.xPos - 1, oy + aeSlot.yPos - 1, optionalSlot.getSourceX() - 1, optionalSlot.getSourceY() - 1,
-								18,
-								18 );
+						this.drawTexturedModalRect( ox + aeSlot.xPos - 1, oy + aeSlot.yPos - 1, optionalSlot.getSourceX() - 1, optionalSlot.getSourceY() - 1, 18, 18 );
 						GlStateManager.color( 1.0F, 1.0F, 1.0F, 1.0F );
 					}
 				}
@@ -506,7 +509,7 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 	{
 		final EntityPlayer player = Minecraft.getMinecraft().player;
 
-		if( this.isJeiGhostItem && isDraggingJeiGhostItem)
+		if( this.isJeiGhostItem && isDraggingJeiGhostItem )
 		{
 			for( IGhostIngredientHandler.Target target : hoveredIngredientTargets )
 			{
@@ -759,7 +762,8 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 			this.disableShiftClick = false;
 		}
 
-		if (clickType == ClickType.PICKUP && isJeiGhostItem && !isDraggingJeiGhostItem) {
+		if( clickType == ClickType.PICKUP && isJeiGhostItem && !isDraggingJeiGhostItem )
+		{
 			this.isDraggingJeiGhostItem = true;
 			return;
 		}
@@ -879,7 +883,7 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 			if( stack != ItemStack.EMPTY )
 			{
 				InventoryAction direction = wheel > 0 ? InventoryAction.PLACE_SINGLE : InventoryAction.PICKUP_SINGLE;
-				final PacketInventoryAction p = new PacketInventoryAction( direction , slot.slotNumber , 0);
+				final PacketInventoryAction p = new PacketInventoryAction( direction, slot.slotNumber, 0 );
 				NetworkHandler.instance().sendToServer( p );
 			}
 		}
@@ -1032,27 +1036,11 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 							final float f1 = 0.00390625F;
 							final float f = 0.00390625F;
 							final float par6 = 16;
-							vb.pos( par1 + 0, par2 + par6, this.zLevel )
-									.tex( ( par3 + 0 ) * f, ( par4 + par6 ) * f1 )
-									.color( 1.0f, 1.0f, 1.0f,
-											aes.getOpacityOfIcon() )
-									.endVertex();
+							vb.pos( par1 + 0, par2 + par6, this.zLevel ).tex( ( par3 + 0 ) * f, ( par4 + par6 ) * f1 ).color( 1.0f, 1.0f, 1.0f, aes.getOpacityOfIcon() ).endVertex();
 							final float par5 = 16;
-							vb.pos( par1 + par5, par2 + par6, this.zLevel )
-									.tex( ( par3 + par5 ) * f, ( par4 + par6 ) * f1 )
-									.color( 1.0f, 1.0f, 1.0f,
-											aes.getOpacityOfIcon() )
-									.endVertex();
-							vb.pos( par1 + par5, par2 + 0, this.zLevel )
-									.tex( ( par3 + par5 ) * f, ( par4 + 0 ) * f1 )
-									.color( 1.0f, 1.0f, 1.0f,
-											aes.getOpacityOfIcon() )
-									.endVertex();
-							vb.pos( par1 + 0, par2 + 0, this.zLevel )
-									.tex( ( par3 + 0 ) * f, ( par4 + 0 ) * f1 )
-									.color( 1.0f, 1.0f, 1.0f,
-											aes.getOpacityOfIcon() )
-									.endVertex();
+							vb.pos( par1 + par5, par2 + par6, this.zLevel ).tex( ( par3 + par5 ) * f, ( par4 + par6 ) * f1 ).color( 1.0f, 1.0f, 1.0f, aes.getOpacityOfIcon() ).endVertex();
+							vb.pos( par1 + par5, par2 + 0, this.zLevel ).tex( ( par3 + par5 ) * f, ( par4 + 0 ) * f1 ).color( 1.0f, 1.0f, 1.0f, aes.getOpacityOfIcon() ).endVertex();
+							vb.pos( par1 + 0, par2 + 0, this.zLevel ).tex( ( par3 + 0 ) * f, ( par4 + 0 ) * f1 ).color( 1.0f, 1.0f, 1.0f, aes.getOpacityOfIcon() ).endVertex();
 							tessellator.draw();
 
 						}
@@ -1066,8 +1054,7 @@ public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContain
 				{
 					if( ( (AppEngSlot) s ).getIsValid() == hasCalculatedValidness.NotAvailable )
 					{
-						boolean isValid = s.isItemValid(
-								is ) || s instanceof SlotOutput || s instanceof AppEngCraftingSlot || s instanceof SlotDisabled || s instanceof SlotInaccessible || s instanceof SlotFake || s instanceof SlotRestrictedInput || s instanceof SlotDisconnected;
+						boolean isValid = s.isItemValid( is ) || s instanceof SlotOutput || s instanceof AppEngCraftingSlot || s instanceof SlotDisabled || s instanceof SlotInaccessible || s instanceof SlotFake || s instanceof SlotRestrictedInput || s instanceof SlotDisconnected;
 						if( isValid && s instanceof SlotRestrictedInput )
 						{
 							try

src/main/java/appeng/core/AppEng.java

@@ -25,6 +25,7 @@ import java.util.concurrent.TimeUnit;
 
 import javax.annotation.Nonnull;
 
+import appeng.helpers.NonBlockingItems;
 import com.google.common.base.Stopwatch;
 import com.google.common.collect.Lists;
 
@@ -238,6 +239,8 @@ public final class AppEng
 		AppEng.proxy.postInit();
 		AEConfig.instance().save();
 
+		NonBlockingItems.INSTANCE.init();
+
 		NetworkRegistry.INSTANCE.registerGuiHandler( this, GuiBridge.GUI_Handler );
 		NetworkHandler.init( "AE2" );
 

src/main/java/appeng/core/sync/AppEngPacketHandlerBase.java

@@ -24,34 +24,9 @@ import java.lang.reflect.InvocationTargetException;
 import java.util.HashMap;
 import java.util.Map;
 
+import appeng.core.sync.packets.*;
 import io.netty.buffer.ByteBuf;
 
-import appeng.core.sync.packets.PacketAssemblerAnimation;
-import appeng.core.sync.packets.PacketClick;
-import appeng.core.sync.packets.PacketCompassRequest;
-import appeng.core.sync.packets.PacketCompassResponse;
-import appeng.core.sync.packets.PacketCompressedNBT;
-import appeng.core.sync.packets.PacketConfigButton;
-import appeng.core.sync.packets.PacketCraftRequest;
-import appeng.core.sync.packets.PacketFluidSlot;
-import appeng.core.sync.packets.PacketInventoryAction;
-import appeng.core.sync.packets.PacketJEIRecipe;
-import appeng.core.sync.packets.PacketLightning;
-import appeng.core.sync.packets.PacketMEFluidInventoryUpdate;
-import appeng.core.sync.packets.PacketMEInventoryUpdate;
-import appeng.core.sync.packets.PacketMatterCannon;
-import appeng.core.sync.packets.PacketMockExplosion;
-import appeng.core.sync.packets.PacketPaintedEntity;
-import appeng.core.sync.packets.PacketPartPlacement;
-import appeng.core.sync.packets.PacketPatternSlot;
-import appeng.core.sync.packets.PacketProgressBar;
-import appeng.core.sync.packets.PacketSwapSlots;
-import appeng.core.sync.packets.PacketSwitchGuis;
-import appeng.core.sync.packets.PacketTargetFluidStack;
-import appeng.core.sync.packets.PacketTargetItemStack;
-import appeng.core.sync.packets.PacketTransitionEffect;
-import appeng.core.sync.packets.PacketValueConfig;
-
 
 public class AppEngPacketHandlerBase
 {
@@ -107,7 +82,10 @@ public class AppEngPacketHandlerBase
 
 		PACKET_PAINTED_ENTITY( PacketPaintedEntity.class ),
 
-		PACKET_FLUID_TANK( PacketFluidSlot.class );
+		PACKET_FLUID_TANK( PacketFluidSlot.class ),
+
+		PACKET_INFORM_PLAYER( PacketInformPlayer.class );
+
 
 		private final Class<? extends AppEngPacket> packetClass;
 		private final Constructor<? extends AppEngPacket> packetConstructor;

src/main/java/appeng/core/sync/packets/PacketInformPlayer.java

@@ -0,0 +1,89 @@
+package appeng.core.sync.packets;
+
+import appeng.api.storage.data.IAEItemStack;
+import appeng.core.AppEng;
+import appeng.core.sync.AppEngPacket;
+import appeng.core.sync.network.INetworkInfo;
+import appeng.util.item.AEItemStack;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.text.TextComponentString;
+
+import java.io.IOException;
+
+public class PacketInformPlayer extends AppEngPacket
+{
+	private IAEItemStack actualItem = null;
+	private IAEItemStack reportedItem = null;
+	private final InfoType type;
+
+	public PacketInformPlayer( ByteBuf stream ) throws IOException
+	{
+		this.type = InfoType.values()[stream.readInt()];
+		if( type == InfoType.PARTIAL_ITEM_EXTRACTION )
+		{
+			this.reportedItem = AEItemStack.fromPacket( stream );
+			this.actualItem = AEItemStack.fromPacket( stream );
+		}
+		else if( type == InfoType.NO_ITEMS_EXTRACTED )
+		{
+			this.reportedItem = AEItemStack.fromPacket( stream );
+		}
+	}
+
+	public PacketInformPlayer( final IAEItemStack iaeItemStack ) throws IOException
+	{
+		this( iaeItemStack, null );
+	}
+
+	public PacketInformPlayer( IAEItemStack extra, IAEItemStack result ) throws IOException
+	{
+		this.reportedItem = extra;
+		this.actualItem = result;
+		if( actualItem == null )
+		{
+			this.type = InfoType.NO_ITEMS_EXTRACTED;
+		}
+		else
+		{
+			this.type = InfoType.PARTIAL_ITEM_EXTRACTION;
+		}
+
+		final ByteBuf data = Unpooled.buffer();
+
+		data.writeInt( this.getPacketID() );
+
+		data.writeInt( type.ordinal() );
+
+		reportedItem.writeToPacket( data );
+		if( actualItem != null )
+		{
+			actualItem.writeToPacket( data );
+		}
+
+		this.configureWrite( data );
+	}
+
+	@Override
+	public void clientPacketData( final INetworkInfo network, final AppEngPacket packet, final EntityPlayer player )
+	{
+		TextComponentString msg = null;
+
+		if( this.type == InfoType.PARTIAL_ITEM_EXTRACTION )
+		{
+			AppEng.proxy.getPlayers().get( 0 ).sendStatusMessage( new TextComponentString( "System reported " + reportedItem.getStackSize() + " " + reportedItem.getItem().getItemStackDisplayName( reportedItem.getDefinition() ) + " available but could only extract" + actualItem.getStackSize() ), false );
+		}
+		else if( this.type == InfoType.NO_ITEMS_EXTRACTED )
+		{
+			AppEng.proxy.getPlayers().get( 0 ).sendStatusMessage( new TextComponentString( "System reported " + reportedItem.getStackSize() + " " + reportedItem.getItem().getItemStackDisplayName( reportedItem.getDefinition() ) + " available but could not extract anything" ), false );
+		}
+
+	}
+
+	public enum InfoType
+	{
+		PARTIAL_ITEM_EXTRACTION,
+		NO_ITEMS_EXTRACTED
+	}
+}

src/main/java/appeng/core/sync/packets/PacketJEIRecipe.java

@@ -30,7 +30,6 @@ import java.util.List;
 import appeng.api.config.FuzzyMode;
 import appeng.container.implementations.ContainerExpandedProcessingPatternTerm;
 import appeng.container.implementations.ContainerPatternTerm;
-import gregtech.common.items.MetaTool;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 
@@ -41,6 +40,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.CompressedStreamTools;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.nbt.NBTTagList;
+import net.minecraftforge.fml.common.Optional;
 import net.minecraftforge.items.IItemHandler;
 
 import appeng.api.AEApi;
@@ -175,7 +175,8 @@ public class PacketJEIRecipe extends AppEngPacket
 			{
 				ItemStack currentItem = craftMatrix.getStackInSlot( x );
 
-				if (x >= this.recipe.size()) {
+				if( x >= this.recipe.size() )
+				{
 					currentItem = ItemStack.EMPTY;
 				}
 
@@ -228,7 +229,7 @@ public class PacketJEIRecipe extends AppEngPacket
 									out = Platform.poweredExtraction( energy, storage, request, cct.getActionSource() );
 									if( out == null )
 									{
-										if( request.getItem().isDamageable() || ( Platform.isModLoaded( "gregtech" ) && request.getItem() instanceof MetaTool ) )
+										if( request.getItem().isDamageable() || Platform.isGTDamageableItem( request.getItem() ) )
 										{
 											Collection<IAEItemStack> outList = inv.getInventory( AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) ).getStorageList().findFuzzy( request, FuzzyMode.IGNORE_ALL );
 											for( IAEItemStack is : outList )
@@ -261,7 +262,7 @@ public class PacketJEIRecipe extends AppEngPacket
 
 								if( out != null )
 								{
-									if (!cct.useRealItems())
+									if( !cct.useRealItems() )
 									{
 										out.setStackSize( recipe.get( x )[y].getCount() );
 									}
@@ -285,7 +286,7 @@ public class PacketJEIRecipe extends AppEngPacket
 							}
 						}
 					}
-					if (!cct.useRealItems())
+					if( !cct.useRealItems() )
 					{
 						if( currentItem.isEmpty() && recipe.size() > x && this.recipe.get( x ) != null )
 						{
@@ -301,24 +302,25 @@ public class PacketJEIRecipe extends AppEngPacket
 			if( this.output != null && ( ( con instanceof ContainerPatternTerm && !( (ContainerPatternTerm) con ).isCraftingMode() ) || con instanceof ContainerExpandedProcessingPatternTerm ) )
 			{
 				IItemHandler outputSlots = cct.getInventoryByName( "output" );
-
-				for( int i = 0; i < this.output.size(); ++i )
+				for( int i = 0; i < outputSlots.getSlots(); ++i )
 				{
-					if( this.output.get( i ) == null )
+					ItemHandlerUtil.setStackInSlot( outputSlots, i, ItemStack.EMPTY );
+				}
+				for( int i = 0; i < this.output.size() && i < outputSlots.getSlots(); ++i )
+				{
+					if( this.output.get( i ) == null || this.output.get( i ) == ItemStack.EMPTY )
 					{
 						continue;
 					}
 					ItemHandlerUtil.setStackInSlot( outputSlots, i, this.output.get( i ) );
 				}
-
 			}
 		}
 	}
 
 	/**
-	 * 
 	 * @param slot
-	 * @param is itemstack
+	 * @param is   itemstack
 	 * @return is if it can be used, else EMPTY
 	 */
 	private ItemStack canUseInSlot( int slot, ItemStack is )

src/main/java/appeng/crafting/CraftingJob.java

@@ -19,15 +19,6 @@
 package appeng.crafting;
 
 
-import java.util.HashMap;
-import java.util.concurrent.TimeUnit;
-
-import com.google.common.base.Stopwatch;
-
-import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.nbt.NBTTagCompound;
-import net.minecraft.world.World;
-
 import appeng.api.AEApi;
 import appeng.api.config.Actionable;
 import appeng.api.networking.IGrid;
@@ -36,7 +27,6 @@ import appeng.api.networking.IGridNode;
 import appeng.api.networking.crafting.ICraftingCallback;
 import appeng.api.networking.crafting.ICraftingGrid;
 import appeng.api.networking.crafting.ICraftingJob;
-import appeng.api.networking.crafting.ICraftingPatternDetails;
 import appeng.api.networking.security.IActionHost;
 import appeng.api.networking.security.IActionSource;
 import appeng.api.networking.storage.IStorageGrid;
@@ -46,6 +36,14 @@ import appeng.api.storage.data.IItemList;
 import appeng.api.util.DimensionalCoord;
 import appeng.core.AELog;
 import appeng.hooks.TickHandler;
+import appeng.me.cache.GridStorageCache;
+import com.google.common.base.Stopwatch;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.world.World;
+
+import java.util.HashMap;
+import java.util.concurrent.TimeUnit;
 
 
 public class CraftingJob implements Runnable, ICraftingJob
@@ -57,47 +55,45 @@ public class CraftingJob implements Runnable, ICraftingJob
 	private final World world;
 	private final IItemList<IAEItemStack> crafting = AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ).createList();
 	private final IItemList<IAEItemStack> missing = AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ).createList();
-	private final IItemList<IAEItemStack> usedWhileBuilding = AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ).createList();
+	private final IItemList<IAEItemStack> neededForLoop = AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ).createList();
+	private final Object2ObjectOpenHashMap<CraftingTreeNode, IAEItemStack> reserved = new Object2ObjectOpenHashMap<>();
 
 	private final HashMap<String, TwoIntegers> opsAndMultiplier = new HashMap<>();
 	private final Object monitor = new Object();
 	private final Stopwatch tickSpreadingWatch = Stopwatch.createUnstarted();
 	private final Stopwatch craftingTreeWatch = Stopwatch.createUnstarted();
-	private CraftingTreeNode tree;
 	private final IAEItemStack output;
+	private final IActionSource actionSrc;
+	private final ICraftingCallback callback;
+	private CraftingTreeNode tree;
 	private boolean simulate = false;
 	private MECraftingInventory availableCheck;
 	private long bytes = 0;
-	private final IActionSource actionSrc;
-	private final ICraftingCallback callback;
 	private boolean running = false;
 	private boolean done = false;
 	private int time;
 	private int incTime;
 
-	private World wrapWorld( final World w )
-	{
-		return w;
-	}
-
 	public CraftingJob( final World w, final IGrid grid, final IActionSource actionSrc, final IAEItemStack what, final ICraftingCallback callback )
 	{
-		this.world = this.wrapWorld( w );
+		this.world = w;
 		this.output = what.copy();
 		this.actionSrc = actionSrc;
 
 		this.callback = callback;
-		final ICraftingGrid cc = grid.getCache( ICraftingGrid.class );
-		final IStorageGrid sg = grid.getCache( IStorageGrid.class );
-		this.original = new MECraftingInventory( sg.getInventory( AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) ), actionSrc, false, false, false );
 
+		ICraftingGrid cc = grid.getCache( ICraftingGrid.class );
+		final GridStorageCache sg = grid.getCache( IStorageGrid.class );
+		this.original = sg.getExtractableList( actionSrc );
+
+		this.availableCheck = new MECraftingInventory( this.original, false, false, false );
 		this.setTree( this.getCraftingTree( cc, what ) );
 		this.availableCheck = null;
 	}
 
 	private CraftingTreeNode getCraftingTree( final ICraftingGrid cc, final IAEItemStack what )
 	{
-		return new CraftingTreeNode( cc, this, what, null, -1, 0 );
+		return new CraftingTreeNode( cc, this, what, what.getStackSize(), null, -1 );
 	}
 
 	void refund( final IAEItemStack o )
@@ -105,27 +101,17 @@ public class CraftingJob implements Runnable, ICraftingJob
 		this.availableCheck.injectItems( o, Actionable.MODULATE, this.actionSrc );
 	}
 
-	public IItemList<IAEItemStack> getUsedWhileBuilding()
-	{
-		return usedWhileBuilding;
-	}
-
-	public IAEItemStack getOriginal( IAEItemStack request )
-	{
-		return original.getItemList().findPrecise( request );
-	}
-
 	IAEItemStack checkUse( final IAEItemStack available )
 	{
 		return this.availableCheck.extractItems( available, Actionable.MODULATE, this.actionSrc );
 	}
 
-	public void writeToNBT( final NBTTagCompound out )
+	IAEItemStack checkAvailable( final IAEItemStack available )
 	{
-
+		return this.availableCheck.extractItems( available, Actionable.SIMULATE, this.actionSrc );
 	}
 
-	void addTask( IAEItemStack what, final long crafts, final ICraftingPatternDetails details, final int depth )
+	void addTask( IAEItemStack what, final long crafts )
 	{
 		if( crafts > 0 )
 		{
@@ -141,6 +127,22 @@ public class CraftingJob implements Runnable, ICraftingJob
 		this.missing.add( what );
 	}
 
+	public void reserve( CraftingTreeNode node, IAEItemStack stack )
+	{
+		this.checkUse( stack );
+		reserved.put( node, stack );
+	}
+
+	public IItemList<IAEItemStack> getNeededForLoop()
+	{
+		return neededForLoop;
+	}
+
+	public Object2ObjectOpenHashMap<CraftingTreeNode, IAEItemStack> getReserved()
+	{
+		return reserved;
+	}
+
 	@Override
 	public void run()
 	{
@@ -151,13 +153,15 @@ public class CraftingJob implements Runnable, ICraftingJob
 				TickHandler.INSTANCE.registerCraftingSimulation( this.world, this );
 				this.handlePausing();
 
-				craftingTreeWatch.start();
-
 				final MECraftingInventory craftingInventory = new MECraftingInventory( this.original, true, false, true );
-				craftingInventory.ignore( this.output );
 
 				this.availableCheck = new MECraftingInventory( this.original, false, false, false );
+				this.reserved.values().forEach( availableCheck::reserve );
+				this.reserved.values().forEach( craftingInventory::reserve );
+
+				craftingTreeWatch.start();
 				this.getTree().request( craftingInventory, this.output.getStackSize(), this.actionSrc );
+				craftingTreeWatch.stop();
 				this.getTree().dive( this );
 
 				for( final String s : this.opsAndMultiplier.keySet() )
@@ -166,8 +170,14 @@ public class CraftingJob implements Runnable, ICraftingJob
 					AELog.crafting( s + " * " + ti.times + " = " + ( ti.perOp * ti.times ) );
 				}
 
-				craftingTreeWatch.stop();
-				this.logCraftingJob( "real, success", craftingTreeWatch );
+				if( actionSrc.player().isPresent() )
+				{
+					this.logCraftingJob( "simulated, success", craftingTreeWatch );
+				}
+				else
+				{
+					this.logCraftingJob( "real, success", craftingTreeWatch );
+				}
 			}
 			catch( final CraftBranchFailure e )
 			{
@@ -177,14 +187,16 @@ public class CraftingJob implements Runnable, ICraftingJob
 				{
 					if( actionSrc.player().isPresent() )
 					{
-						craftingTreeWatch.reset().start();
 						final MECraftingInventory craftingInventory = new MECraftingInventory( this.original, true, false, true );
-						craftingInventory.ignore( this.output );
+						this.getTree().setSimulate();
 
 						this.availableCheck = new MECraftingInventory( this.original, false, false, false );
+						this.reserved.values().forEach( availableCheck::reserve );
+						this.reserved.values().forEach( craftingInventory::reserve );
 
-						this.getTree().setSimulate();
+						craftingTreeWatch.reset().start();
 						this.getTree().request( craftingInventory, this.output.getStackSize(), this.actionSrc );
+						craftingTreeWatch.stop();
 						this.getTree().dive( this );
 
 						for( final String s : this.opsAndMultiplier.keySet() )
@@ -193,12 +205,10 @@ public class CraftingJob implements Runnable, ICraftingJob
 							AELog.crafting( s + " * " + ti.times + " = " + ( ti.perOp * ti.times ) );
 						}
 
-						craftingTreeWatch.stop();
-						this.logCraftingJob( "simulate", craftingTreeWatch );
+						this.logCraftingJob( "simulated, failed", craftingTreeWatch );
 					}
 					else
 					{
-						craftingTreeWatch.stop();
 						this.logCraftingJob( "real, failed", craftingTreeWatch );
 					}
 				}
@@ -267,7 +277,7 @@ public class CraftingJob implements Runnable, ICraftingJob
 				}
 			}
 		}
-		
+
 		if( Thread.interrupted() )
 		{
 			throw new InterruptedException();

src/main/java/appeng/crafting/CraftingTreeNode.java

@@ -19,15 +19,6 @@
 package appeng.crafting;
 
 
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-
-import com.google.common.collect.Lists;
-
-import net.minecraft.util.text.TextComponentString;
-import net.minecraft.world.World;
-
 import appeng.api.AEApi;
 import appeng.api.config.Actionable;
 import appeng.api.config.FuzzyMode;
@@ -37,9 +28,22 @@ import appeng.api.networking.security.IActionSource;
 import appeng.api.storage.channels.IItemStorageChannel;
 import appeng.api.storage.data.IAEItemStack;
 import appeng.api.storage.data.IItemList;
+import appeng.core.sync.network.NetworkHandler;
+import appeng.core.sync.packets.PacketInformPlayer;
 import appeng.me.cluster.implementations.CraftingCPUCluster;
+import appeng.util.Platform;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.world.World;
+import net.minecraftforge.fml.common.Optional;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
 
 
+@Optional.Interface( iface = "gregtech.api.items.IToolItem", modid = "gregtech" )
 public class CraftingTreeNode
 {
 
@@ -54,22 +58,20 @@ public class CraftingTreeNode
 	private final IAEItemStack what;
 	// what are the crafting patterns for this?
 	private final ArrayList<CraftingTreeProcess> nodes = new ArrayList<>();
+	private final boolean canEmit;
+	private CraftingTreeNode loopHead;
 	private int bytes = 0;
-	private boolean canEmit = false;
 	private long missing = 0;
 	private long howManyEmitted = 0;
 	private boolean exhausted = false;
 
-	private boolean sim;
-
-	public CraftingTreeNode( final ICraftingGrid cc, final CraftingJob job, final IAEItemStack wat, final CraftingTreeProcess par, final int slot, final int depth )
+	public CraftingTreeNode( final ICraftingGrid cc, final CraftingJob job, final IAEItemStack wat, long amount, final CraftingTreeProcess par, final int slot )
 	{
 		this.what = wat;
 		this.parent = par;
 		this.slot = slot;
 		this.world = job.getWorld();
 		this.job = job;
-		this.sim = false;
 
 		this.canEmit = cc.canEmitFor( this.what );
 
@@ -81,114 +83,136 @@ public class CraftingTreeNode
 		for( final ICraftingPatternDetails details : cc.getCraftingFor( this.what, this.parent == null ? null : this.parent.details, slot, this.world ) )// in
 		// order.
 		{
-			if( this.parent == null || this.parent.notRecursive( details ) )
+			int times = 1;
+			for( IAEItemStack o : details.getCondensedOutputs() )
 			{
-				this.nodes.add( new CraftingTreeProcess( cc, job, details, this, depth + 1 ) );
-			}
-		}
-	}
-
-	public CraftingTreeNode( final ICraftingGrid cc, final CraftingJob job, final IAEItemStack wat, final CraftingTreeProcess par, final int slot, final int depth, boolean available )
-	{
-		this.what = wat;
-		this.parent = par;
-		this.slot = slot;
-		this.world = job.getWorld();
-		this.job = job;
-		this.sim = false;
-
-		this.canEmit = cc.canEmitFor( this.what );
-
-		if( this.canEmit )
-		{
-			return; // if you can emit for something, you can't make it with patterns.
-		}
-
-		if( !available )
-		{
-			for( final ICraftingPatternDetails details : cc.getCraftingFor( this.what, this.parent == null ? null : this.parent.details, slot, this.world ) )// in
-			// order.
-			{
-				if( this.parent == null || this.parent.notRecursive( details ) )
+				if( what.equals( o ) )
 				{
-					this.nodes.add( new CraftingTreeProcess( cc, job, details, this, depth + 1 ) );
+					times = (int) ( amount / o.getStackSize() + ( amount % o.getStackSize() != 0 ? 1 : 0 ) );
 				}
 			}
+
+			if( this.parent == null )
+			{
+				this.nodes.add( new CraftingTreeProcess( cc, job, details, times, this ) );
+				continue;
+			}
+			if( details == parent.details )
+			{
+				continue;
+			}
+			CraftingTreeNode recursive = recursiveNode( this );
+			if( recursive == null )
+			{
+				this.nodes.add( new CraftingTreeProcess( cc, job, details, times, this ) );
+			}
+			else
+			{
+				reserveForNode();
+			}
 		}
 	}
 
-	boolean notRecursive( final ICraftingPatternDetails details )
+	void reserveForNode()
 	{
-		IAEItemStack[] o = details.getCondensedOutputs();
-
-		for( final IAEItemStack i : o )
+		if( this.equals( loopHead ) )
 		{
-			if( i.equals( this.what ) )
-			{
-				return false;
-			}
+			return;
 		}
-
-		o = details.getCondensedInputs();
-
-		for( final IAEItemStack i : o )
+		IAEItemStack available = job.checkAvailable( this.what );
+		if( available != null && available.getStackSize() >= this.what.getStackSize() )
 		{
-			if( i.equals( this.what ) )
-			{
-				return false;
-			}
+			this.job.reserve( this, this.what.copy() );
 		}
-
-		if( this.parent == null )
+		else
 		{
-			return true;
+			parent.reserveForNode();
 		}
-
-		return this.parent.notRecursive( details );
 	}
 
 	IAEItemStack request( final MECraftingInventory inv, long l, final IActionSource src ) throws CraftBranchFailure, InterruptedException
 	{
 		this.job.handlePausing();
+		if( this.canEmit )
+		{
+			final IAEItemStack wat = this.what.copy();
+			wat.setStackSize( l );
+
+			this.howManyEmitted = wat.getStackSize();
+			this.bytes += wat.getStackSize();
+
+			return wat;
+		}
+
+		final IItemList<IAEItemStack> inventoryList = inv.getItemList();
+
+		IAEItemStack reserved = job.getReserved().get( this );
+
 		final List<IAEItemStack> thingsUsed = new ArrayList<>();
 
 		this.what.setStackSize( l );
 
 		if( this.getSlot() >= 0 && this.parent != null && this.parent.details.isCraftable() )
 		{
-			final Collection<IAEItemStack> itemList;
-			final IItemList<IAEItemStack> inventoryList = inv.getItemList();
+			Collection<IAEItemStack> itemList = new HashSet<>();
 
-			if( this.parent.details.canSubstitute() )
+			if( this.what.getItem().isDamageable() || Platform.isGTDamageableItem( this.what.getItem() ) )
 			{
-				final List<IAEItemStack> substitutes = this.parent.details.getSubstituteInputs( this.slot );
-				itemList = new ArrayList<>( substitutes.size() );
+				itemList.addAll( inventoryList.findFuzzy( this.what, FuzzyMode.IGNORE_ALL ) );
 
-				for( IAEItemStack stack : substitutes )
+				if( this.parent.details.canSubstitute() )
 				{
-					itemList.addAll( inventoryList.findFuzzy( stack, FuzzyMode.IGNORE_ALL ) );
+					for( IAEItemStack is : inventoryList )
+					{
+						if( is.fuzzyComparison( this.what, FuzzyMode.IGNORE_ALL ) )
+						{
+							itemList.add( is );
+						}
+					}
 				}
 			}
 			else
 			{
-				itemList = Lists.newArrayList();
-
 				final IAEItemStack item = inventoryList.findPrecise( this.what );
-
 				if( item != null )
 				{
 					itemList.add( item );
 				}
+				if( this.parent.details.canSubstitute() )
+				{
+					for( IAEItemStack s : parent.details.getSubstituteInputs( this.slot ) )
+					{
+						if( s != null )
+						{
+							for( IAEItemStack ss : inventoryList.findFuzzy( s, FuzzyMode.IGNORE_ALL ) )
+							{
+								if( ss != null )
+								{
+									itemList.add( ss );
+								}
+							}
+						}
+					}
+				}
 			}
 
 			for( IAEItemStack fuzz : itemList )
 			{
-				if( this.parent.details.isValidItemForSlot( this.getSlot(), fuzz.copy().getCachedItemStack( 1 ), this.world ) )
+				if( this.parent.details.isValidItemForSlot( this.getSlot(), fuzz.getDefinition(), this.world ) )
 				{
 					fuzz = fuzz.copy();
 					fuzz.setStackSize( l );
 
-					final IAEItemStack available = inv.extractItems( fuzz, Actionable.MODULATE, src );
+					final IAEItemStack available;
+
+					if( reserved != null )
+					{
+						available = reserved;
+					}
+					else
+					{
+						available = inv.extractItems( fuzz, Actionable.MODULATE, src );
+					}
 
 					if( available != null )
 					{
@@ -201,6 +225,11 @@ public class CraftingTreeNode
 								thingsUsed.add( is.copy() );
 								this.used.add( is );
 							}
+							else if( reserved != null )
+							{
+								thingsUsed.add( reserved.copy() );
+								this.used.add( reserved );
+							}
 						}
 
 						this.bytes += available.getStackSize();
@@ -216,7 +245,20 @@ public class CraftingTreeNode
 		}
 		else
 		{
-			final IAEItemStack available = inv.extractItems( this.what, Actionable.MODULATE, src );
+			final IAEItemStack available;
+
+			if( parent == null && this.what.equals( job.getOutput() ) )
+			{
+				available = null;
+			}
+			else if( reserved != null )
+			{
+				available = reserved;
+			}
+			else
+			{
+				available = inv.extractItems( this.what, Actionable.MODULATE, src );
+			}
 
 			if( available != null )
 			{
@@ -229,6 +271,11 @@ public class CraftingTreeNode
 						thingsUsed.add( is.copy() );
 						this.used.add( is );
 					}
+					else if( reserved != null )
+					{
+						thingsUsed.add( reserved.copy() );
+						this.used.add( reserved );
+					}
 				}
 
 				this.bytes += available.getStackSize();
@@ -241,17 +288,6 @@ public class CraftingTreeNode
 			}
 		}
 
-		if( this.canEmit )
-		{
-			final IAEItemStack wat = this.what.copy();
-			wat.setStackSize( l );
-
-			this.howManyEmitted = wat.getStackSize();
-			this.bytes += wat.getStackSize();
-
-			return wat;
-		}
-
 		this.exhausted = true;
 
 		if( this.nodes.size() == 1 )
@@ -265,7 +301,6 @@ public class CraftingTreeNode
 				pro.request( inv, pro.getTimes( l, madeWhat.getStackSize() ), src );
 
 				madeWhat.setStackSize( l );
-
 				final IAEItemStack available = inv.extractItems( madeWhat, Actionable.MODULATE, src );
 
 				if( available != null )
@@ -293,7 +328,9 @@ public class CraftingTreeNode
 					while ( pro.possible && l > 0 )
 					{
 						final MECraftingInventory subInv = new MECraftingInventory( inv, true, true, true );
-						pro.request( subInv, 1, src );
+						final IAEItemStack madeWhat = pro.getAmountCrafted( this.what );
+
+						pro.request( subInv, pro.getTimes( l, madeWhat.getStackSize() ), src );
 
 						this.what.setStackSize( l );
 						final IAEItemStack available = subInv.extractItems( this.what, Actionable.MODULATE, src );
@@ -326,10 +363,10 @@ public class CraftingTreeNode
 			}
 		}
 
-		if( this.sim )
+		if( job.isSimulation() )
 		{
-			this.missing += l;
 			this.bytes += l;
+			this.missing += l;
 			final IAEItemStack rv = this.what.copy();
 			rv.setStackSize( l );
 			return rv;
@@ -345,6 +382,26 @@ public class CraftingTreeNode
 		throw new CraftBranchFailure( this.what, l );
 	}
 
+	CraftingTreeNode recursiveNode( CraftingTreeNode node )
+	{
+		if( this.parent == null )
+		{
+			return null;
+		}
+		if( node != this )
+		{
+			if( node.what.equals( this.what ) )
+			{
+				if( node.what.getStackSize() == this.what.getStackSize() )
+				{
+					loopHead = this;
+					return node;
+				}
+			}
+		}
+		return this.parent.notRecursive( node );
+	}
+
 	void dive( final CraftingJob job )
 	{
 		if( this.missing > 0 )
@@ -370,7 +427,6 @@ public class CraftingTreeNode
 
 	void setSimulate()
 	{
-		this.sim = true;
 		this.missing = 0;
 		this.bytes = 0;
 		this.used.resetStatus();
@@ -392,7 +448,21 @@ public class CraftingTreeNode
 			{
 				if( src.player().isPresent() )
 				{
-					src.player().get().sendStatusMessage( new TextComponentString( "System reported " + i.getStackSize() + " " + i.getDefinition().getItem().getItemStackDisplayName( i.getDefinition() ) + " available but could not extract anything" ), false );
+					try
+					{
+						if( ex == null )
+						{
+							NetworkHandler.instance().sendTo( new PacketInformPlayer( i ), (EntityPlayerMP) src.player().get() );
+						}
+						else
+						{
+							NetworkHandler.instance().sendTo( new PacketInformPlayer( ex, i ), (EntityPlayerMP) src.player().get() );
+						}
+					}
+					catch( IOException e )
+					{
+						e.printStackTrace();
+					}
 				}
 				throw new CraftBranchFailure( i, i.getStackSize() );
 			}

src/main/java/appeng/crafting/CraftingTreeProcess.java

@@ -19,236 +19,202 @@
 package appeng.crafting;
 
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Map.Entry;
-
-import it.unimi.dsi.fastutil.objects.Object2LongArrayMap;
-import net.minecraft.inventory.InventoryCrafting;
-import net.minecraft.item.ItemStack;
-import net.minecraft.world.World;
-import net.minecraft.world.WorldServer;
-import net.minecraftforge.fml.common.FMLCommonHandler;
-
-import appeng.api.AEApi;
 import appeng.api.config.Actionable;
+import appeng.api.config.FuzzyMode;
 import appeng.api.networking.crafting.ICraftingGrid;
 import appeng.api.networking.crafting.ICraftingPatternDetails;
 import appeng.api.networking.security.IActionSource;
-import appeng.api.storage.channels.IItemStorageChannel;
 import appeng.api.storage.data.IAEItemStack;
 import appeng.api.storage.data.IItemList;
-import appeng.container.ContainerNull;
 import appeng.me.cluster.implementations.CraftingCPUCluster;
 import appeng.util.Platform;
-import org.apache.commons.lang3.tuple.Pair;
+import appeng.util.item.AEItemStack;
+import com.google.common.collect.ImmutableCollection;
+import it.unimi.dsi.fastutil.objects.Object2LongArrayMap;
+import net.minecraft.item.ItemStack;
+import net.minecraft.world.World;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map.Entry;
 
 
 public class CraftingTreeProcess
 {
-
-	private final CraftingTreeNode parent;
 	final ICraftingPatternDetails details;
+	private final CraftingTreeNode parent;
 	private final CraftingJob job;
 	private final Object2LongArrayMap<CraftingTreeNode> nodes = new Object2LongArrayMap<>();
-	private final int depth;
 	boolean possible = true;
-	private World world;
 	private long crafts = 0;
-	private boolean containerItems;
-	private boolean limitQty;
-	private boolean fullSimulation;
 	private long bytes = 0;
+	private boolean hasContainerItem = false;
 
-	public CraftingTreeProcess( final ICraftingGrid cc, final CraftingJob job, final ICraftingPatternDetails details, final CraftingTreeNode craftingTreeNode, final int depth )
+	public CraftingTreeProcess( final ICraftingGrid cc, final CraftingJob job, final ICraftingPatternDetails details, int times, final CraftingTreeNode craftingTreeNode )
 	{
 		this.parent = craftingTreeNode;
 		this.details = details;
 		this.job = job;
-		this.depth = depth;
-		final World world = job.getWorld();
+		World world = job.getWorld();
 
-		if( details.isCraftable() )
+		final IAEItemStack[] list = details.getInputs();
+
+		// this is minor different then below, this slot uses the pattern, but kinda fudges it.
+		for( IAEItemStack part : details.getCondensedInputs() )
 		{
-			final IAEItemStack[] list = details.getInputs();
-
-			for( final IAEItemStack part : details.getCondensedInputs() )
+			if( part == null )
 			{
-				boolean isAnInput = false;
-				for( final IAEItemStack a : details.getCondensedOutputs() )
+				continue;
+			}
+			for( int x = 0; x < list.length; x++ )
+			{
+				final IAEItemStack comparePart = list[x];
+				if( part.equals( comparePart ) )
 				{
-					if( a != null && a.equals( part ) )
+					boolean isPartContainer = false;
+					if( part.getItem().hasContainerItem( part.getDefinition() ) )
+					{
+						part = list[x];
+						isPartContainer = true;
+						this.hasContainerItem = true;
+					}
+
+					long wantedSize = isPartContainer ? part.getStackSize() : part.getStackSize() * times;
+
+					if( details.canSubstitute() && cc.getCraftingFor( part, details, x, world ).isEmpty() )
+					{
+						for( IAEItemStack subs : details.getSubstituteInputs( x ) )
+						{
+							if( subs.fuzzyComparison( part, FuzzyMode.IGNORE_ALL ) )
+							{
+								this.nodes.put( new CraftingTreeNode( cc, job, subs.copy(), wantedSize, this, x ), part.getStackSize() / times );
+								wantedSize = 0;
+								break;
+							}
+						}
+						//try to order the crafting of a substitute
+						ICraftingPatternDetails prioritizedPattern = null;
+						IAEItemStack prioritizedIAE = null;
+						for( IAEItemStack subs : details.getSubstituteInputs( x ) )
+						{
+							if( subs.equals( part ) )
+							{
+								continue;
+							}
+							ImmutableCollection<ICraftingPatternDetails> detailCollection = cc.getCraftingFor( subs, details, x, world );
+
+							for( ICraftingPatternDetails sp : detailCollection )
+							{
+								if( prioritizedPattern == null )
+								{
+									prioritizedPattern = sp;
+									prioritizedIAE = subs;
+								}
+								else
+								{
+									if( sp.getPriority() > prioritizedPattern.getPriority() )
+									{
+										prioritizedPattern = sp;
+									}
+								}
+							}
+							if( prioritizedIAE != null )
+							{
+								this.nodes.put( new CraftingTreeNode( cc, job, prioritizedIAE.copy(), wantedSize, this, x ), part.getStackSize() / times );
+								wantedSize = 0;
+								break;
+							}
+						}
+					}
+					if( wantedSize > 0 )
+					{
+						part = part.copy().setStackSize( wantedSize );
+						// use the first slot...
+						this.nodes.put( new CraftingTreeNode( cc, job, part.copy(), wantedSize, this, x ), part.getStackSize() / times );
+						wantedSize = 0;
+					}
+					if( !isPartContainer && wantedSize == 0 )
 					{
-						isAnInput = true;
 						break;
 					}
 				}
-
-				if( isAnInput )
-				{
-					this.limitQty = true;
-				}
-
-				if( part.getItem().hasContainerItem( part.getDefinition() ) )
-				{
-					this.limitQty = this.containerItems = true;
-					break;
-				}
-			}
-
-			if( this.containerItems )
-			{
-				for( int x = 0; x < list.length; x++ )
-				{
-					final IAEItemStack part = list[x];
-					if( part != null )
-					{
-						job.getUsedWhileBuilding().addStorage( part );
-						IAEItemStack used = job.getUsedWhileBuilding().findPrecise( part );
-						if( job.getOriginal( part ) != null && used.getStackSize() <= job.getOriginal( part ).getStackSize() )
-						{
-							this.nodes.put( new CraftingTreeNode( cc, job, part.copy(), this, x, depth + 1, true ), part.getStackSize() );
-						}
-						else
-						{
-							this.nodes.put( new CraftingTreeNode( cc, job, part.copy(), this, x, depth + 1 ), part.getStackSize() );
-						}
-					}
-				}
-			}
-			else
-			{
-				// this is minor different then below, this slot uses the pattern, but kinda fudges it.
-				for( final IAEItemStack part : details.getCondensedInputs() )
-				{
-					for( int x = 0; x < list.length; x++ )
-					{
-						final IAEItemStack comparePart = list[x];
-						if( part != null && part.equals( comparePart ) )
-						{
-							job.getUsedWhileBuilding().addStorage( part );
-							IAEItemStack used = job.getUsedWhileBuilding().findPrecise( part );
-							if( job.getOriginal( part ) != null && used.getStackSize() <= job.getOriginal( part ).getStackSize() )
-							{
-								this.nodes.put( new CraftingTreeNode( cc, job, part.copy(), this, x, depth + 1, true ), part.getStackSize() );
-							}
-							else
-							{
-								// use the first slot...
-								this.nodes.put( new CraftingTreeNode( cc, job, part.copy(), this, x, depth + 1 ), part.getStackSize() );
-							}
-							break;
-						}
-					}
-				}
-			}
-		}
-		else
-		{
-			for( final IAEItemStack part : details.getCondensedInputs() )
-			{
-				boolean isAnInput = false;
-				for( final IAEItemStack a : details.getCondensedOutputs() )
-				{
-					if( a != null && a.equals( part ) )
-					{
-						isAnInput = true;
-						break;
-					}
-				}
-
-				if( isAnInput )
-				{
-					this.limitQty = true;
-				}
-			}
-
-			for( final IAEItemStack part : details.getCondensedInputs() )
-			{
-				this.nodes.put( new CraftingTreeNode( cc, job, part.copy(), this, -1, depth + 1 ), part.getStackSize() );
 			}
 		}
 	}
 
-	boolean notRecursive( final ICraftingPatternDetails details )
+	CraftingTreeNode notRecursive( CraftingTreeNode node )
 	{
-		return this.parent == null || this.parent.notRecursive( details );
+		if( parent == null )
+		{
+			return null;
+		}
+		return this.parent.recursiveNode( node );
 	}
 
 	long getTimes( final long remaining, final long stackSize )
 	{
-		if( this.limitQty || this.fullSimulation )
+		if( hasContainerItem )
 		{
 			return 1;
 		}
 		return ( remaining / stackSize ) + ( remaining % stackSize != 0 ? 1 : 0 );
 	}
 
-	void request( final MECraftingInventory inv, final long i, final IActionSource src ) throws CraftBranchFailure, InterruptedException
+	void request( final MECraftingInventory inv, final long amountOfTimes, final IActionSource src ) throws CraftBranchFailure, InterruptedException
 	{
 		this.job.handlePausing();
-		if( this.fullSimulation )
+		List<IAEItemStack> containerItems = null;
+
+		// request and remove inputs...
+		for( final Entry<CraftingTreeNode, Long> entry : this.nodes.object2LongEntrySet() )
 		{
-			final InventoryCrafting ic = new InventoryCrafting( new ContainerNull(), 3, 3 );
+			final IAEItemStack stack = entry.getKey().request( inv, details.isCraftable() && hasContainerItem ? 1 : entry.getValue() * amountOfTimes, src );
 
-			for( final Entry<CraftingTreeNode, Long> entry : this.nodes.object2LongEntrySet() )
+			if( stack.equals( job.getOutput() ) )
 			{
-				final IAEItemStack item = entry.getKey().getStack( entry.getValue() );
-				final IAEItemStack stack = entry.getKey().request( inv, item.getStackSize(), src );
-
-				ic.setInventorySlotContents( entry.getKey().getSlot(), stack.createItemStack() );
+				job.getNeededForLoop().add( stack.copy() );
 			}
 
-			for( int x = 0; x < ic.getSizeInventory(); x++ )
+			if( details.isCraftable() && stack.getItem().hasContainerItem( stack.getDefinition() ) )
 			{
-				ItemStack is = ic.getStackInSlot( x );
-				is = Platform.getContainerItem( is );
-
-				final IAEItemStack o = AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ).createStack( is );
+				final ItemStack is = Platform.getContainerItem( stack.createItemStack() );
+				final IAEItemStack o = AEItemStack.fromItemStack( is );
 				if( o != null )
 				{
-					this.bytes++;
-					inv.injectItems( o, Actionable.MODULATE, src );
-				}
-			}
-		}
-		else
-		{
-			// request and remove inputs...
-			for( final Entry<CraftingTreeNode, Long> entry : this.nodes.object2LongEntrySet() )
-			{
-				final IAEItemStack item = entry.getKey().getStack( entry.getValue() );
-				final IAEItemStack stack = entry.getKey().request( inv, item.getStackSize() * i, src );
-
-				if( this.containerItems )
-				{
-					final ItemStack is = Platform.getContainerItem( stack.createItemStack() );
-					final IAEItemStack o = AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ).createStack( is );
-					if( o != null )
+					if( containerItems == null )
 					{
-						this.bytes++;
-						inv.injectItems( o, Actionable.MODULATE, src );
+						containerItems = new ArrayList<>();
+					}
+					this.bytes++;
+					o.setCachedItemStack( is );
+					containerItems.add( o );
+				}
+				if( containerItems != null )
+				{
+					for( IAEItemStack i : containerItems )
+					{
+						inv.injectItems( i, Actionable.MODULATE, src );
 					}
 				}
 			}
 		}
 
+
 		// assume its possible.
 
 		// add crafting results..
 		for( final IAEItemStack out : this.details.getCondensedOutputs() )
 		{
 			final IAEItemStack o = out.copy();
-			o.setStackSize( o.getStackSize() * i );
+			o.setStackSize( o.getStackSize() * amountOfTimes );
 			inv.injectItems( o, Actionable.MODULATE, src );
 		}
-		this.crafts += i;
+		this.crafts += amountOfTimes;
 	}
 
 	void dive( final CraftingJob job )
 	{
-		job.addTask( this.getAmountCrafted( this.parent.getStack( 1 ) ), this.crafts, this.details, this.depth );
+		job.addTask( this.getAmountCrafted( this.parent.getStack( 1 ) ), this.crafts );
 		for( final Entry<CraftingTreeNode, Long> entry : this.nodes.object2LongEntrySet() )
 		{
 			entry.getKey().dive( job );
@@ -318,4 +284,9 @@ public class CraftingTreeProcess
 			entry.getKey().getPlan( plan );
 		}
 	}
+
+	public void reserveForNode()
+	{
+		parent.reserveForNode();
+	}
 }

src/main/java/appeng/crafting/MECraftingInventory.java

@@ -28,10 +28,14 @@ import appeng.api.storage.IStorageChannel;
 import appeng.api.storage.channels.IItemStorageChannel;
 import appeng.api.storage.data.IAEItemStack;
 import appeng.api.storage.data.IItemList;
-import appeng.me.helpers.PlayerSource;
+import appeng.core.sync.network.NetworkHandler;
+import appeng.core.sync.packets.PacketInformPlayer;
 import appeng.util.inv.ItemListIgnoreCrafting;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.util.text.TextComponentString;
 
+import java.io.IOException;
+
 
 public class MECraftingInventory implements IMEInventory<IAEItemStack>
 {
@@ -310,20 +314,23 @@ public class MECraftingInventory implements IMEInventory<IAEItemStack>
 				{
 					if( src.player().isPresent() )
 					{
-						if( result == null )
+						try
 						{
-							src.player().get().sendStatusMessage( new TextComponentString( "System reported " + extra.getStackSize() + " " + extra.getDefinition().getItem().getItemStackDisplayName( extra.getDefinition() ) + " available but could not extract anything" ), false );
+							if( result == null )
+							{
+								NetworkHandler.instance().sendTo( new PacketInformPlayer( extra ), (EntityPlayerMP) src.player().get() );
+							}
+							else
+							{
+								NetworkHandler.instance().sendTo( new PacketInformPlayer( extra, result ), (EntityPlayerMP) src.player().get() );
+							}
 						}
-						else
+						catch( IOException e )
 						{
-							src.player().get().sendStatusMessage( new TextComponentString( "System reported " + extra.getStackSize() + " " + extra.getDefinition().getItem().getItemStackDisplayName( extra.getDefinition() ) + " available but could only extract " + result.getStackSize() ), false );
+							e.printStackTrace();
 						}
 					}
 					failed = true;
-					if( !src.player().isPresent() )
-					{
-						break;
-					}
 				}
 			}
 		}
@@ -354,11 +361,6 @@ public class MECraftingInventory implements IMEInventory<IAEItemStack>
 		return true;
 	}
 
-	private void addMissing( final IAEItemStack extra )
-	{
-		this.missingCache.add( extra );
-	}
-
 	void ignore( final IAEItemStack what )
 	{
 		final IAEItemStack list = this.localCache.findPrecise( what );
@@ -367,4 +369,18 @@ public class MECraftingInventory implements IMEInventory<IAEItemStack>
 			list.setStackSize( 0 );
 		}
 	}
+
+	void reserve( final IAEItemStack what )
+	{
+		final IAEItemStack list = this.localCache.findPrecise( what );
+		if( list != null )
+		{
+			list.decStackSize( what.getStackSize() );
+		}
+	}
+
+	private void addMissing( final IAEItemStack extra )
+	{
+		this.missingCache.add( extra );
+	}
 }

src/main/java/appeng/fluids/container/ContainerFluidTerminal.java

@@ -414,7 +414,7 @@ public class ContainerFluidTerminal extends AEBaseContainer implements IConfigMa
 					}
 				}
 
-				if( notInserted == null )
+				if( notInserted == null || notInserted.getStackSize() == 0 )
 				{
 					if( !player.inventory.addItemStackToInventory( fh.getContainer() ) )
 					{

src/main/java/appeng/helpers/DualityInterface.java

@@ -19,39 +19,6 @@
 package appeng.helpers;
 
 
-import java.util.*;
-
-import javax.annotation.Nullable;
-
-import appeng.util.inv.BlockingInventoryAdaptor;
-import appeng.util.*;
-import appeng.util.inv.*;
-import com.google.common.collect.ImmutableSet;
-
-import com.google.common.primitives.Ints;
-import de.ellpeck.actuallyadditions.api.tile.IPhantomTile;
-import gregtech.api.block.machines.BlockMachine;
-import gregtech.api.metatileentity.MetaTileEntity;
-import net.minecraft.block.Block;
-import net.minecraft.block.state.IBlockState;
-import net.minecraft.init.Items;
-import net.minecraft.inventory.InventoryCrafting;
-import net.minecraft.item.Item;
-import net.minecraft.item.ItemStack;
-import net.minecraft.nbt.NBTTagCompound;
-import net.minecraft.nbt.NBTTagList;
-import net.minecraft.tileentity.TileEntity;
-import net.minecraft.util.EnumFacing;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.RayTraceResult;
-import net.minecraft.util.math.Vec3d;
-import net.minecraft.world.World;
-import net.minecraftforge.common.capabilities.Capability;
-import net.minecraftforge.fml.common.Loader;
-import net.minecraftforge.items.CapabilityItemHandler;
-import net.minecraftforge.items.IItemHandler;
-import net.minecraftforge.items.wrapper.RangedWrapper;
-
 import appeng.api.AEApi;
 import appeng.api.config.Actionable;
 import appeng.api.config.Settings;
@@ -75,11 +42,7 @@ import appeng.api.networking.ticking.IGridTickable;
 import appeng.api.networking.ticking.TickRateModulation;
 import appeng.api.networking.ticking.TickingRequest;
 import appeng.api.parts.IPart;
-import appeng.api.storage.IMEInventory;
-import appeng.api.storage.IMEMonitor;
-import appeng.api.storage.IStorageChannel;
-import appeng.api.storage.IStorageMonitorable;
-import appeng.api.storage.IStorageMonitorableAccessor;
+import appeng.api.storage.*;
 import appeng.api.storage.channels.IFluidStorageChannel;
 import appeng.api.storage.channels.IItemStorageChannel;
 import appeng.api.storage.data.IAEFluidStack;
@@ -101,7 +64,39 @@ import appeng.parts.automation.StackUpgradeInventory;
 import appeng.parts.automation.UpgradeInventory;
 import appeng.tile.inventory.AppEngInternalAEInventory;
 import appeng.tile.inventory.AppEngInternalInventory;
+import appeng.util.ConfigManager;
+import appeng.util.IConfigManagerHost;
+import appeng.util.InventoryAdaptor;
+import appeng.util.Platform;
+import appeng.util.inv.*;
 import appeng.util.item.AEItemStack;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.primitives.Ints;
+import de.ellpeck.actuallyadditions.api.tile.IPhantomTile;
+import gregtech.api.block.machines.BlockMachine;
+import gregtech.api.metatileentity.MetaTileEntity;
+import net.minecraft.block.Block;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.init.Items;
+import net.minecraft.inventory.InventoryCrafting;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.nbt.NBTTagList;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.RayTraceResult;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.World;
+import net.minecraftforge.common.capabilities.Capability;
+import net.minecraftforge.fml.common.Loader;
+import net.minecraftforge.items.CapabilityItemHandler;
+import net.minecraftforge.items.IItemHandler;
+import net.minecraftforge.items.wrapper.RangedWrapper;
+
+import javax.annotation.Nullable;
+import java.util.*;
 
 import static gregtech.api.block.machines.BlockMachine.getMetaTileEntity;
 
@@ -113,9 +108,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 	public static final int NUMBER_OF_PATTERN_SLOTS = 36;
 
 	private static final Collection<Block> BAD_BLOCKS = new HashSet<>( 100 );
-	private final IAEItemStack[] requireWork = {
-			null, null, null, null, null, null, null, null, null
-	};
+	private final IAEItemStack[] requireWork = {null, null, null, null, null, null, null, null, null};
 	private final MultiCraftingTracker craftingTracker;
 	private final AENetworkProxy gridProxy;
 	private final IInterfaceHost iHost;
@@ -128,13 +121,13 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 	private final MEMonitorPassThrough<IAEItemStack> items = new MEMonitorPassThrough<>( new NullInventory<IAEItemStack>(), AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) );
 	private final MEMonitorPassThrough<IAEFluidStack> fluids = new MEMonitorPassThrough<>( new NullInventory<IAEFluidStack>(), AEApi.instance().storage().getStorageChannel( IFluidStorageChannel.class ) );
 	private final UpgradeInventory upgrades;
+	private final Accessor accessor = new Accessor();
 	private boolean hasConfig = false;
 	private int priority;
 	private List<ICraftingPatternDetails> craftingList = null;
 	private List<ItemStack> waitingToSend = null;
 	private IMEInventory<IAEItemStack> destination;
 	private int isWorking = -1;
-	private final Accessor accessor = new Accessor();
 	private EnumSet<EnumFacing> visitedFaces = EnumSet.noneOf( EnumFacing.class );
 	private EnumMap<EnumFacing, List<ItemStack>> waitingToSendFacing = new EnumMap<>( EnumFacing.class );
 	private boolean resetConfigCache = true;
@@ -160,6 +153,11 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 		this.interfaceRequestSource = new InterfaceRequestSource( this.iHost );
 	}
 
+	private static boolean invIsCustomBlocking( BlockingInventoryAdaptor inv )
+	{
+		return ( inv.containsBlockingItems() );
+	}
+
 	@Override
 	public void saveChanges()
 	{
@@ -281,6 +279,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 		final NBTTagCompound waitingListSided = data.getCompoundTag( "sidedWaitList" );
 
 		for( EnumFacing s : EnumFacing.values() )
+		{
 			if( waitingListSided.hasKey( s.name() ) )
 			{
 				NBTTagList w = waitingListSided.getTagList( s.name(), 10 );
@@ -294,6 +293,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 					}
 				}
 			}
+		}
 
 		this.craftingTracker.readFromNBT( data );
 
@@ -464,14 +464,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 		}
 		try
 		{
-			if( removed )
-			{
-				this.gridProxy.getGrid().postEvent( new MENetworkCraftingPatternChange( this, this.gridProxy.getNode() ) );
-			}
-			else if( newPattern )
-			{
-				this.provideCrafting( (ICraftingProviderHelper) this.gridProxy.getCrafting() );
-			}
+			this.gridProxy.getGrid().postEvent( new MENetworkCraftingPatternChange( this, this.gridProxy.getNode() ) );
 		}
 		catch( GridAccessException e )
 		{
@@ -916,10 +909,6 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 					changed = true;
 					throw new GridAccessException();
 				}
-				else
-				{
-					itemStack.setCachedItemStack( inputStack );
-				}
 
 				IAEItemStack storedStack = this.gridProxy.getStorage().getInventory( AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) ).getStorageList().findPrecise( itemStack );
 				if( storedStack != null )
@@ -937,8 +926,13 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 					}
 					else if( storedStack.isCraftable() )
 					{
+						itemStack.setCachedItemStack( inputStack );
 						changed = this.handleCrafting( x, adaptor, itemStack ) || changed;
 					}
+					if( acquired == null )
+					{
+						itemStack.setCachedItemStack( inputStack );
+					}
 				}
 			}
 			// else wtf?
@@ -1111,11 +1105,6 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 		return ( inv.containsItems() );
 	}
 
-	private static boolean invIsCustomBlocking( BlockingInventoryAdaptor inv )
-	{
-		return ( inv.containsBlockingItems() );
-	}
-
 	@Override
 	public boolean pushPattern( final ICraftingPatternDetails patternDetails, final InventoryCrafting table )
 	{
@@ -1165,7 +1154,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 				}
 			}
 
-			final InventoryAdaptor ad = InventoryAdaptor.getAdaptor( te, s.getOpposite() );
+			InventoryAdaptor ad = InventoryAdaptor.getAdaptor( te, s.getOpposite() );
 			if( ad != null )
 			{
 				if( this.isBlocking() )
@@ -1177,7 +1166,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 						if( phantomTE.hasBoundPosition() )
 						{
 							TileEntity phantom = w.getTileEntity( phantomTE.getBoundPosition() );
-							if( NonBlockingItems.INSTANCE.getMap().containsKey( phantom.getBlockType().getRegistryName().getResourceDomain() ) )
+							if( NonBlockingItems.INSTANCE.getMap().containsKey( w.getBlockState( phantomTE.getBoundPosition() ).getBlock().getRegistryName().getResourceDomain() ) )
 							{
 								if( isCustomInvBlocking( phantom, s ) )
 								{
@@ -1187,7 +1176,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 							}
 						}
 					}
-					else if( NonBlockingItems.INSTANCE.getMap().containsKey( te.getBlockType().getRegistryName().getResourceDomain() ) )
+					else if( NonBlockingItems.INSTANCE.getMap().containsKey( w.getBlockState( tile.getPos().offset( s ) ).getBlock().getRegistryName().getResourceDomain() ) )
 					{
 						if( isCustomInvBlocking( te, s ) )
 						{
@@ -1195,7 +1184,6 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 							continue;
 						}
 					}
-
 					else if( invIsBlocked( ad ) )
 					{
 						visitedFaces.remove( s );
@@ -1255,7 +1243,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 						if( phantomTE.hasBoundPosition() )
 						{
 							TileEntity phantom = w.getTileEntity( phantomTE.getBoundPosition() );
-							if( NonBlockingItems.INSTANCE.getMap().containsKey( phantom.getBlockType().getRegistryName().getResourceDomain() ) )
+							if( NonBlockingItems.INSTANCE.getMap().containsKey( w.getBlockState( phantomTE.getBoundPosition() ).getBlock().getRegistryName().getResourceDomain() ) )
 							{
 								if( !isCustomInvBlocking( phantom, s ) )
 								{
@@ -1265,8 +1253,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 							}
 						}
 					}
-
-					else if( NonBlockingItems.INSTANCE.getMap().containsKey( te.getBlockType().getRegistryName().getResourceDomain() ) )
+					else if( NonBlockingItems.INSTANCE.getMap().containsKey( w.getBlockState( tile.getPos().offset( s ) ).getBlock().getRegistryName().getResourceDomain() ) )
 					{
 						if( !isCustomInvBlocking( te, s ) )
 						{
@@ -1274,11 +1261,13 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 							break;
 						}
 					}
-
-					else if( !invIsBlocked( ad ) )
+					else
 					{
-						allAreBusy = false;
-						break;
+						if( !invIsBlocked( ad ) )
+						{
+							allAreBusy = false;
+							break;
+						}
 					}
 				}
 			}
@@ -1604,6 +1593,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 
 	}
 
+
 	private class InterfaceRequestContext implements Comparable<Integer>
 	{
 
@@ -1614,6 +1604,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 		}
 	}
 
+
 	private class InterfaceInventory extends MEMonitorIInventory
 	{
 
@@ -1651,6 +1642,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 		}
 	}
 
+
 	private class Accessor implements IStorageMonitorableAccessor
 	{
 

src/main/java/appeng/helpers/NonBlockingItems.java

@@ -2,6 +2,7 @@ package appeng.helpers;
 
 import appeng.core.AEConfig;
 import appeng.core.AELog;
+import appeng.util.Platform;
 import gregtech.api.items.metaitem.MetaItem;
 import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
 import it.unimi.dsi.fastutil.ints.IntSet;
@@ -50,16 +51,19 @@ public class NonBlockingItems
 							continue;
 						}
 
-						if( ModItemMeta[0].equals( "gregtech" ) )
+						if( ModItemMeta[0].equals( "gregtech" ) && Platform.isModLoaded( "gregtech" ) )
 						{
+							boolean found = false;
 							for( MetaItem<?> metaItem : MetaItem.getMetaItems() )
 							{
 								MetaItem<?>.MetaValueItem metaItem2 = metaItem.getItem( ModItemMeta[1] );
 								if( metaItem.getItem( ModItemMeta[1] ) != null )
 								{
+									found = true;
 									ItemStack itemStack = metaItem2.getStackForm();
 									NON_BLOCKING_MAP.get( modid ).putIfAbsent( itemStack.getItem(), new IntOpenHashSet() );
-									NON_BLOCKING_MAP.get( modid ).computeIfPresent( itemStack.getItem(), ( item, intSet ) -> {
+									NON_BLOCKING_MAP.get( modid ).computeIfPresent( itemStack.getItem(), ( item, intSet ) ->
+									{
 										intSet.add( itemStack.getItemDamage() );
 										return intSet;
 									} );
@@ -70,28 +74,30 @@ public class NonBlockingItems
 									if( !itemStack.isEmpty() )
 									{
 										NON_BLOCKING_MAP.get( modid ).putIfAbsent( itemStack.getItem(), new IntOpenHashSet() );
-										NON_BLOCKING_MAP.get( modid ).computeIfPresent( itemStack.getItem(), ( item, intSet ) -> {
+										NON_BLOCKING_MAP.get( modid ).computeIfPresent( itemStack.getItem(), ( item, intSet ) ->
+										{
 											intSet.add( itemStack.getItemDamage() );
 											return intSet;
 										} );
 									}
-									else
-									{
-										AELog.error( "Item not found on nonBlocking config: " + s );
-									}
 								}
-								break;
+							}
+							if( !found )
+							{
+								AELog.error( "Item not found on nonBlocking config: " + s );
 							}
 						}
 						else if( ModItemMeta[0].equals( "ore" ) )
 						{
-							OreDictionary.getOres( ModItemMeta[1] ).forEach( itemStack -> {
-								NON_BLOCKING_MAP.get( modid ).putIfAbsent( itemStack.getItem(), new IntOpenHashSet() );
-								NON_BLOCKING_MAP.get( modid ).computeIfPresent( itemStack.getItem(), ( item, intSet ) -> {
-									intSet.add( itemStack.getItemDamage() );
-									return intSet;
-								} );
-							} );
+							OreDictionary.getOres( ModItemMeta[1] ).forEach( itemStack ->
+							                                                 {
+								                                                 NON_BLOCKING_MAP.get( modid ).putIfAbsent( itemStack.getItem(), new IntOpenHashSet() );
+								                                                 NON_BLOCKING_MAP.get( modid ).computeIfPresent( itemStack.getItem(), ( item, intSet ) ->
+								                                                 {
+									                                                 intSet.add( itemStack.getItemDamage() );
+									                                                 return intSet;
+								                                                 } );
+							                                                 } );
 						}
 						else
 						{
@@ -99,7 +105,8 @@ public class NonBlockingItems
 							if( !itemStack.isEmpty() )
 							{
 								NON_BLOCKING_MAP.get( modid ).putIfAbsent( itemStack.getItem(), new IntOpenHashSet() );
-								NON_BLOCKING_MAP.get( modid ).computeIfPresent( itemStack.getItem(), ( item, intSet ) -> {
+								NON_BLOCKING_MAP.get( modid ).computeIfPresent( itemStack.getItem(), ( item, intSet ) ->
+								{
 									intSet.add( itemStack.getItemDamage() );
 									return intSet;
 								} );
@@ -119,4 +126,8 @@ public class NonBlockingItems
 	{
 		return NON_BLOCKING_MAP;
 	}
+
+	public void init()
+	{
+	}
 }

src/main/java/appeng/helpers/PatternHelper.java

@@ -40,6 +40,7 @@ import appeng.container.ContainerNull;
 import appeng.util.Platform;
 import appeng.util.item.AEItemStack;
 import net.minecraftforge.common.crafting.IShapedRecipe;
+import net.minecraftforge.fml.common.Optional;
 
 
 public class PatternHelper implements ICraftingPatternDetails, Comparable<PatternHelper>
@@ -247,7 +248,7 @@ public class PatternHelper implements ICraftingPatternDetails, Comparable<Patter
 
 		final TestStatus result = this.getStatus( slotIndex, i );
 
-		switch( result )
+		switch ( result )
 		{
 			case ACCEPT:
 				return true;
@@ -266,9 +267,11 @@ public class PatternHelper implements ICraftingPatternDetails, Comparable<Patter
 		this.testFrame.setInventorySlotContents( slotIndex, i );
 
 		// If we cannot substitute, the items must match exactly
-		if (!canSubstitute && slotIndex < inputs.length) {
-			if (!inputs[slotIndex].isSameType(i)) {
-				this.markItemAs(slotIndex, i, TestStatus.DECLINE);
+		if( ( !( i.getItem().isDamageable() || Platform.isGTDamageableItem( i.getItem() ) ) && !canSubstitute ) && slotIndex < inputs.length )
+		{
+			if( !inputs[slotIndex].isSameType( i ) )
+			{
+				this.markItemAs( slotIndex, i, TestStatus.DECLINE );
 				return false;
 			}
 		}
@@ -326,23 +329,26 @@ public class PatternHelper implements ICraftingPatternDetails, Comparable<Patter
 	}
 
 	@Override
-	public List<IAEItemStack> getSubstituteInputs(int slot) {
-		if (this.inputs[slot] == null) {
+	public List<IAEItemStack> getSubstituteInputs( int slot )
+	{
+		if( this.inputs[slot] == null )
+		{
 			return Collections.emptyList();
 		}
 
-		return this.substituteInputs.computeIfAbsent(slot, value -> {
-			ItemStack[] matchingStacks = getRecipeIngredient(slot).getMatchingStacks();
-			List<IAEItemStack> itemList = new ArrayList<>(matchingStacks.length + 1);
-			for (ItemStack matchingStack : matchingStacks) {
-				itemList.add(AEItemStack.fromItemStack(matchingStack));
+		return this.substituteInputs.computeIfAbsent( slot, value -> {
+			ItemStack[] matchingStacks = getRecipeIngredient( slot ).getMatchingStacks();
+			List<IAEItemStack> itemList = new ArrayList<>( matchingStacks.length + 1 );
+			for( ItemStack matchingStack : matchingStacks )
+			{
+				itemList.add( AEItemStack.fromItemStack( matchingStack ) );
 			}
 
 			// Ensure that the specific item put in by the user is at the beginning,
 			// so that it takes precedence over substitutions
-			itemList.add(0, this.inputs[slot]);
+			itemList.add( 0, this.inputs[slot] );
 			return itemList;
-		});
+		} );
 	}
 
 	/**
@@ -352,31 +358,40 @@ public class PatternHelper implements ICraftingPatternDetails, Comparable<Patter
 	 * ingredient list will be condensed to the actual recipe's grid size. In addition, in our 3x3 grid, the user can
 	 * shift the actual recipe input to the right and down.
 	 */
-	private Ingredient getRecipeIngredient(int slot) {
+	private Ingredient getRecipeIngredient( int slot )
+	{
 
-		if (standardRecipe instanceof IShapedRecipe ) {
+		if( standardRecipe instanceof IShapedRecipe )
+		{
 			IShapedRecipe shapedRecipe = (IShapedRecipe) standardRecipe;
 
-			return getShapedRecipeIngredient(slot, shapedRecipe.getRecipeWidth());
-		} else {
-			return getShapelessRecipeIngredient(slot);
+			return getShapedRecipeIngredient( slot, shapedRecipe.getRecipeWidth() );
+		}
+		else
+		{
+			return getShapelessRecipeIngredient( slot );
 		}
 	}
 
-	private Ingredient getShapedRecipeIngredient(int slot, int recipeWidth) {
+	private Ingredient getShapedRecipeIngredient( int slot, int recipeWidth )
+	{
 		// Compute the offset of the user's input vs. crafting grid origin
 		// Which is >0 if they have empty rows above or to the left of their input
 		int topOffset = 0;
-		if (inputs[0] == null && inputs[1] == null && inputs[2] == null) {
+		if( inputs[0] == null && inputs[1] == null && inputs[2] == null )
+		{
 			topOffset++; // First row is fully empty
-			if (inputs[3] == null && inputs[4] == null && inputs[5] == null) {
+			if( inputs[3] == null && inputs[4] == null && inputs[5] == null )
+			{
 				topOffset++; // Second row is fully empty
 			}
 		}
 		int leftOffset = 0;
-		if (inputs[0] == null && inputs[3] == null && inputs[6] == null) {
+		if( inputs[0] == null && inputs[3] == null && inputs[6] == null )
+		{
 			leftOffset++; // First column is fully empty
-			if (inputs[1] == null && inputs[4] == null && inputs[7] == null) {
+			if( inputs[1] == null && inputs[4] == null && inputs[7] == null )
+			{
 				leftOffset++; // Second column is fully empty
 			}
 		}
@@ -390,32 +405,37 @@ public class PatternHelper implements ICraftingPatternDetails, Comparable<Patter
 
 		NonNullList<Ingredient> ingredients = standardRecipe.getIngredients();
 
-		if (ingredientIndex < 0 || ingredientIndex > ingredients.size()) {
+		if( ingredientIndex < 0 || ingredientIndex > ingredients.size() )
+		{
 			return Ingredient.EMPTY;
 		}
 
-		return ingredients.get(ingredientIndex);
+		return ingredients.get( ingredientIndex );
 	}
 
-	private Ingredient getShapelessRecipeIngredient(int slot) {
+	private Ingredient getShapelessRecipeIngredient( int slot )
+	{
 		// We map the list of *filled* sparse inputs to the shapeless (ergo unordered)
 		// ingredients. While these do not actually correspond to each other,
 		// since both lists have the same length, the mapping is at least stable.
 		int ingredientIndex = 0;
-		for (int i = 0; i < slot; i++) {
-			if (inputs[i] != null) {
+		for( int i = 0; i < slot; i++ )
+		{
+			if( inputs[i] != null )
+			{
 				ingredientIndex++;
 			}
 		}
 
 		NonNullList<Ingredient> ingredients = standardRecipe.getIngredients();
-		if (ingredientIndex < ingredients.size()) {
-			return ingredients.get(ingredientIndex);
+		if( ingredientIndex < ingredients.size() )
+		{
+			return ingredients.get( ingredientIndex );
 		}
 
 		return Ingredient.EMPTY;
 	}
-	
+
 	@Override
 	public ItemStack getOutput( final InventoryCrafting craftingInv, final World w )
 	{
@@ -517,7 +537,9 @@ public class PatternHelper implements ICraftingPatternDetails, Comparable<Patter
 
 	private enum TestStatus
 	{
-		ACCEPT, DECLINE, TEST
+		ACCEPT,
+		DECLINE,
+		TEST
 	}
 
 	private static final class TestLookup

src/main/java/appeng/me/cache/CraftingGridCache.java

@@ -411,27 +411,6 @@ public class CraftingGridCache implements ICraftingGrid, ICraftingProviderHelper
 		{
 			details.add( medium );
 		}
-
-		if( !updatePatterns )
-		{
-			List<IAEItemStack> newCraftables = new ArrayList<>();
-
-			ObjectSet<ICraftingPatternDetails> b = new ObjectRBTreeSet<>( COMPARATOR );
-			ImmutableList<ICraftingPatternDetails> a = this.craftableItems.get( api.getCondensedOutputs()[0] );
-			if( a != null )
-			{
-				b.addAll( this.craftableItems.get( api.getOutputs()[0] ) );
-			}
-			b.add( api );
-
-			for( IAEItemStack stack : api.getCondensedOutputs() )
-			{
-				IAEItemStack i = stack.copy().reset().setCraftable( true );
-				this.craftableItems.put( i, ImmutableList.copyOf( b ) );
-				newCraftables.add( i );
-			}
-			this.storageGrid.postCraftablesChanges( AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ), newCraftables, new BaseActionSource() );
-		}
 	}
 
 	@Override

src/main/java/appeng/me/cache/GridStorageCache.java

@@ -19,13 +19,12 @@
 package appeng.me.cache;
 
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.IdentityHashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
+import appeng.api.storage.channels.IItemStorageChannel;
+import appeng.crafting.MECraftingInventory;
+import appeng.helpers.IInterfaceHost;
+import appeng.helpers.IPriorityHost;
 import com.google.common.collect.HashMultimap;
 import com.google.common.collect.SetMultimap;
 
@@ -55,6 +54,8 @@ import appeng.me.helpers.GenericInterestManager;
 import appeng.me.helpers.MachineSource;
 import appeng.me.storage.ItemWatcher;
 import appeng.me.storage.NetworkInventoryHandler;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 
 
 public class GridStorageCache implements IStorageGrid
@@ -68,6 +69,8 @@ public class GridStorageCache implements IStorageGrid
 	private final HashMap<IGridNode, IStackWatcher> watchers = new HashMap<>();
 	private final Map<IStorageChannel<? extends IAEStack>, NetworkInventoryHandler<?>> storageNetworks;
 	private final Map<IStorageChannel<? extends IAEStack>, NetworkMonitor<?>> storageMonitors;
+	private MECraftingInventory localCache = null;
+	private final Int2ObjectMap<MECraftingInventory> extractableItemPriorityMap = new Int2ObjectOpenHashMap<>();
 	private int localDepth;
 
 	public GridStorageCache( final IGrid g )
@@ -82,6 +85,8 @@ public class GridStorageCache implements IStorageGrid
 	@Override
 	public void onUpdateTick()
 	{
+		this.localCache = null;
+		this.extractableItemPriorityMap.clear();
 		this.storageMonitors.forEach( ( channel, monitor ) -> monitor.onTick() );
 	}
 
@@ -169,6 +174,28 @@ public class GridStorageCache implements IStorageGrid
 		return (IMEMonitor<T>) this.storageMonitors.get( channel );
 	}
 
+	public MECraftingInventory getExtractableList( IActionSource src )
+	{
+		if( src instanceof MachineSource )
+		{
+			if( src.machine().isPresent() )
+			{
+				IActionHost machine = src.machine().get();
+				if( machine instanceof IInterfaceHost )
+				{
+					extractableItemPriorityMap.putIfAbsent( ( (IPriorityHost) machine ).getPriority(), new MECraftingInventory( getInventory( AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) ), src, false, false, false ) );
+					return extractableItemPriorityMap.get( ( (IPriorityHost) machine ).getPriority() );
+				}
+			}
+		}
+
+		if( localCache == null )
+		{
+			localCache = new MECraftingInventory( getInventory( AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) ), src, false, false, false );
+		}
+		return localCache;
+	}
+
 	private CellChangeTracker addCellProvider( final ICellProvider cc, final CellChangeTracker tracker )
 	{
 		if( this.inactiveCellProviders.contains( cc ) )
@@ -198,8 +225,7 @@ public class GridStorageCache implements IStorageGrid
 
 			final IActionSource actionSrc = cc instanceof IActionHost ? new MachineSource( (IActionHost) cc ) : new BaseActionSource();
 
-			this.storageMonitors.forEach( ( channel, monitor ) ->
-			{
+			this.storageMonitors.forEach( ( channel, monitor ) -> {
 				for( final IMEInventoryHandler<IAEItemStack> h : cc.getCellArray( channel ) )
 				{
 					tracker.postChanges( channel, -1, h, actionSrc );

src/main/java/appeng/me/cluster/implementations/CraftingCPUCluster.java

@@ -19,22 +19,6 @@
 package appeng.me.cluster.implementations;
 
 
-import java.util.*;
-import java.util.Map.Entry;
-import java.util.stream.Collectors;
-
-import appeng.api.config.Upgrades;
-import appeng.helpers.DualityInterface;
-import appeng.helpers.PatternHelper;
-import com.google.common.base.Preconditions;
-import com.google.common.collect.ImmutableList;
-
-import net.minecraft.inventory.InventoryCrafting;
-import net.minecraft.item.ItemStack;
-import net.minecraft.nbt.NBTTagCompound;
-import net.minecraft.nbt.NBTTagList;
-import net.minecraft.world.World;
-
 import appeng.api.AEApi;
 import appeng.api.config.Actionable;
 import appeng.api.config.FuzzyMode;
@@ -43,14 +27,7 @@ import appeng.api.implementations.ICraftingPatternItem;
 import appeng.api.networking.IGrid;
 import appeng.api.networking.IGridHost;
 import appeng.api.networking.IGridNode;
-import appeng.api.networking.crafting.CraftingItemList;
-import appeng.api.networking.crafting.ICraftingCPU;
-import appeng.api.networking.crafting.ICraftingGrid;
-import appeng.api.networking.crafting.ICraftingJob;
-import appeng.api.networking.crafting.ICraftingLink;
-import appeng.api.networking.crafting.ICraftingMedium;
-import appeng.api.networking.crafting.ICraftingPatternDetails;
-import appeng.api.networking.crafting.ICraftingRequester;
+import appeng.api.networking.crafting.*;
 import appeng.api.networking.energy.IEnergyGrid;
 import appeng.api.networking.events.MENetworkCraftingCpuChange;
 import appeng.api.networking.security.IActionSource;
@@ -63,11 +40,8 @@ import appeng.api.storage.data.IItemList;
 import appeng.api.util.WorldCoord;
 import appeng.container.ContainerNull;
 import appeng.core.AELog;
-import appeng.crafting.CraftBranchFailure;
-import appeng.crafting.CraftingJob;
-import appeng.crafting.CraftingLink;
-import appeng.crafting.CraftingWatcher;
-import appeng.crafting.MECraftingInventory;
+import appeng.crafting.*;
+import appeng.helpers.PatternHelper;
 import appeng.me.cache.CraftingGridCache;
 import appeng.me.cluster.IAECluster;
 import appeng.me.helpers.MachineSource;
@@ -75,6 +49,17 @@ import appeng.tile.crafting.TileCraftingMonitorTile;
 import appeng.tile.crafting.TileCraftingTile;
 import appeng.util.Platform;
 import appeng.util.item.AEItemStack;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableList;
+import net.minecraft.inventory.InventoryCrafting;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.nbt.NBTTagList;
+import net.minecraft.world.World;
+
+import java.util.*;
+import java.util.Map.Entry;
+import java.util.stream.Collectors;
 
 
 public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
@@ -102,6 +87,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 	private IAEItemStack finalOutput;
 	private boolean waiting = false;
 	private IItemList<IAEItemStack> waitingFor = AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ).createList();
+	private IItemList<IAEItemStack> neededForLoop = AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ).createList();
 	private long availableStorage = 0;
 	private MachineSource machineSrc = null;
 	private int accelerator = 0;
@@ -224,13 +210,10 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 
 	public boolean canAccept( final IAEItemStack input )
 	{
-		if( input instanceof IAEItemStack )
+		if( input != null )
 		{
 			final IAEItemStack is = this.waitingFor.findPrecise( input );
-			if( is != null && is.getStackSize() > 0 )
-			{
-				return true;
-			}
+			return is != null && is.getStackSize() > 0;
 		}
 		return false;
 	}
@@ -239,7 +222,8 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 	{
 		// also stop accepting items when the job is complete, i.e. to prevent re-insertion when pushing out
 		// items during storeItems
-		if (input == null || isComplete) {
+		if( input == null || isComplete )
+		{
 			return input;
 		}
 
@@ -303,9 +287,28 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 
 					if( this.finalOutput.equals( what ) )
 					{
+						IAEItemStack isLoop = neededForLoop.findPrecise( finalOutput );
 						IAEItemStack leftover = what;
 
-						this.finalOutput.decStackSize( what.getStackSize() );
+						if( isLoop != null && isLoop.getStackSize() > 0 )
+						{
+							if( isLoop.getStackSize() >= what.getStackSize() )
+							{
+								leftover = this.inventory.injectItems( what.copy(), type, src );
+								isLoop.decStackSize( what.getStackSize() );
+							}
+							else
+							{
+								leftover = this.inventory.injectItems( what.copy().setStackSize( what.getStackSize() - isLoop.getStackSize() ), type, src );
+								isLoop.decStackSize( what.getStackSize() - isLoop.getStackSize() );
+							}
+							if( leftover == null )
+							{
+								return null;
+							}
+						}
+
+						this.finalOutput.decStackSize( leftover.getStackSize() );
 
 						if( this.myLastLink != null )
 						{
@@ -335,9 +338,28 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 
 				if( this.finalOutput.equals( insert ) )
 				{
+					IAEItemStack isLoop = neededForLoop.findPrecise( finalOutput );
 					IAEItemStack leftover = input;
 
-					this.finalOutput.decStackSize( insert.getStackSize() );
+					if( isLoop != null && isLoop.getStackSize() > 0 )
+					{
+						if( isLoop.getStackSize() >= insert.getStackSize() )
+						{
+							leftover = this.inventory.injectItems( insert.copy(), type, src );
+							isLoop.decStackSize( insert.getStackSize() );
+						}
+						else
+						{
+							leftover = this.inventory.injectItems( insert.copy().setStackSize( insert.getStackSize() - isLoop.getStackSize() ), type, src );
+							isLoop.decStackSize( insert.getStackSize() - isLoop.getStackSize() );
+						}
+						if( leftover == null )
+						{
+							return null;
+						}
+					}
+
+					this.finalOutput.decStackSize( leftover.getStackSize() );
 
 					if( this.myLastLink != null )
 					{
@@ -375,7 +397,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 		{
 			final ImmutableList<IAEItemStack> single = ImmutableList.of( diff.copy() );
 
-			while( i.hasNext() )
+			while ( i.hasNext() )
 			{
 				final Entry<IMEMonitorHandlerReceiver<IAEItemStack>, Object> o = i.next();
 				final IMEMonitorHandlerReceiver<IAEItemStack> receiver = o.getKey();
@@ -495,15 +517,14 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 		return null;
 	}
 
-	private boolean canCraft(final ICraftingPatternDetails details, final IAEItemStack[] condensedInputs)
+	private boolean canCraft( final ICraftingPatternDetails details, final IAEItemStack[] condensedInputs )
 	{
 		if( !details.isCraftable() )
 		{
 			// Processing patterns are relatively easy
-			for ( IAEItemStack input : condensedInputs )
+			for( IAEItemStack input : condensedInputs )
 			{
-				final IAEItemStack ais = this.inventory.extractItems( input.copy(), Actionable.SIMULATE,
-						this.machineSrc );
+				final IAEItemStack ais = this.inventory.extractItems( input.copy(), Actionable.SIMULATE, this.machineSrc );
 
 				if( ais == null || ais.getStackSize() < input.getStackSize() )
 				{
@@ -516,7 +537,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 			// When substitutions are allowed, we have to keep track of which items we've reserved
 			IAEItemStack[] inputs = details.getInputs();
 			Map<IAEItemStack, Integer> consumedCount = new HashMap<>();
-			for ( int i = 0; i < inputs.length; i++ )
+			for( int i = 0; i < inputs.length; i++ )
 			{
 				List<IAEItemStack> substitutes = details.getSubstituteInputs( i );
 				if( substitutes.isEmpty() )
@@ -525,9 +546,9 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 				}
 
 				boolean found = false;
-				for ( IAEItemStack substitute : substitutes )
+				for( IAEItemStack substitute : substitutes )
 				{
-					for ( IAEItemStack fuzz : this.inventory.getItemList().findFuzzy( substitute, FuzzyMode.IGNORE_ALL ) )
+					for( IAEItemStack fuzz : this.inventory.getItemList().findFuzzy( substitute, FuzzyMode.IGNORE_ALL ) )
 					{
 						int alreadyConsumed = consumedCount.getOrDefault( fuzz, 0 );
 						if( fuzz.getStackSize() - alreadyConsumed <= 0 )
@@ -537,8 +558,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 
 						fuzz = fuzz.copy();
 						fuzz.setStackSize( 1 ); // We're iterating over non condensed inputs which means there's 1 of each needed
-						final IAEItemStack ais = this.inventory.extractItems( fuzz, Actionable.SIMULATE,
-								this.machineSrc );
+						final IAEItemStack ais = this.inventory.extractItems( fuzz, Actionable.SIMULATE, this.machineSrc );
 
 						if( ais != null && ais.getStackSize() > 0 )
 						{
@@ -565,11 +585,11 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 		{
 			// When no substitutions can occur, we can simply check that all items are accounted since
 			// each type of item should only occur once
-			for ( IAEItemStack g : condensedInputs )
+			for( IAEItemStack g : condensedInputs )
 			{
 				boolean found = false;
 
-				for ( IAEItemStack fuzz : this.inventory.getItemList().findFuzzy( g, FuzzyMode.IGNORE_ALL ) )
+				for( IAEItemStack fuzz : this.inventory.getItemList().findFuzzy( g, FuzzyMode.IGNORE_ALL ) )
 				{
 					fuzz = fuzz.copy();
 					fuzz.setStackSize( g.getStackSize() );
@@ -675,8 +695,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 			{
 				this.somethingChanged = false;
 				this.executeCrafting( eg, cc );
-			}
-			while( this.somethingChanged && this.remainingOperations > 0 );
+			} while ( this.somethingChanged && this.remainingOperations > 0 );
 		}
 		this.usedOps[2] = this.usedOps[1];
 		this.usedOps[1] = this.usedOps[0];
@@ -692,7 +711,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 	{
 		final Iterator<Entry<ICraftingPatternDetails, TaskProgress>> i = this.tasks.entrySet().iterator();
 
-		while( i.hasNext() )
+		while ( i.hasNext() )
 		{
 			final Entry<ICraftingPatternDetails, TaskProgress> e = i.next();
 
@@ -708,12 +727,12 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 			{
 				InventoryCrafting ic = null;
 
-				if (!visitedMediums.containsKey( details ) || visitedMediums.get( details ).isEmpty())
+				if( !visitedMediums.containsKey( details ) || visitedMediums.get( details ).isEmpty() )
 				{
-					visitedMediums.put( details, new ArrayDeque<>( cc.getMediums( details ).stream().filter( Objects::nonNull ).collect( Collectors.toList()) ) );
+					visitedMediums.put( details, new ArrayDeque<>( cc.getMediums( details ).stream().filter( Objects::nonNull ).collect( Collectors.toList() ) ) );
 				}
 
-				while (!visitedMediums.get( details ).isEmpty())
+				while ( !visitedMediums.get( details ).isEmpty() )
 				{
 
 					ICraftingMedium m = visitedMediums.get( details ).poll();
@@ -773,52 +792,58 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 											{
 												itemList.addAll( this.inventory.getItemList().findFuzzy( stack, FuzzyMode.IGNORE_ALL ) );
 											}
-										} else {
-											itemList = new ArrayList<>(1);
+										}
+										else
+										{
+											itemList = new ArrayList<>( 1 );
 
-											final IAEItemStack item = this.inventory.getItemList()
-													.findPrecise(input[x]);
+											final IAEItemStack item = this.inventory.getItemList().findPrecise( input[x] );
 
-											if (item != null) {
-												itemList.add(item);
+											if( item != null )
+											{
+												itemList.add( item );
 											}
 										}
 
-										for (IAEItemStack fuzz : itemList) {
+										for( IAEItemStack fuzz : itemList )
+										{
 											fuzz = fuzz.copy();
-											fuzz.setStackSize(input[x].getStackSize());
+											fuzz.setStackSize( input[x].getStackSize() );
 
-											if (details.isValidItemForSlot(x, fuzz.createItemStack(),
-													this.getWorld())) {
-												final IAEItemStack ais = this.inventory.extractItems(fuzz,
-														Actionable.MODULATE, this.machineSrc);
-												final ItemStack is = ais == null ? ItemStack.EMPTY
-														: ais.createItemStack();
+											if( details.isValidItemForSlot( x, fuzz.createItemStack(), this.getWorld() ) )
+											{
+												final IAEItemStack ais = this.inventory.extractItems( fuzz, Actionable.MODULATE, this.machineSrc );
+												final ItemStack is = ais == null ? ItemStack.EMPTY : ais.createItemStack();
 
-												if (!is.isEmpty()) {
-													this.postChange(AEItemStack.fromItemStack(is), this.machineSrc);
-													ic.setInventorySlotContents(x, is);
+												if( !is.isEmpty() )
+												{
+													this.postChange( AEItemStack.fromItemStack( is ), this.machineSrc );
+													ic.setInventorySlotContents( x, is );
 													found = true;
 													break;
 												}
 											}
 										}
-									} else {
-										final IAEItemStack ais = this.inventory.extractItems(input[x].copy(),
-												Actionable.MODULATE, this.machineSrc);
+									}
+									else
+									{
+										final IAEItemStack ais = this.inventory.extractItems( input[x].copy(), Actionable.MODULATE, this.machineSrc );
 										final ItemStack is = ais == null ? ItemStack.EMPTY : ais.createItemStack();
 
-										if (!is.isEmpty()) {
-											this.postChange(input[x], this.machineSrc);
-											ic.setInventorySlotContents(x, is);
-											if (is.getCount() == input[x].getStackSize()) {
+										if( !is.isEmpty() )
+										{
+											this.postChange( input[x], this.machineSrc );
+											ic.setInventorySlotContents( x, is );
+											if( is.getCount() == input[x].getStackSize() )
+											{
 												found = true;
 												continue;
 											}
 										}
 									}
 
-									if (!found) {
+									if( !found )
+									{
 										break;
 									}
 								}
@@ -902,7 +927,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 
 	private void storeItems()
 	{
-		Preconditions.checkState(isComplete, "CPU should be complete to prevent re-insertion when dumping items");
+		Preconditions.checkState( isComplete, "CPU should be complete to prevent re-insertion when dumping items" );
 		final IGrid g = this.getGrid();
 
 		if( g == null )
@@ -962,10 +987,12 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 		try
 		{
 			this.waitingFor.resetStatus();
+			this.neededForLoop.resetStatus();
 			( (CraftingJob) job ).getTree().setJob( ci, this, src );
 			if( ci.commit( src ) )
 			{
 				this.finalOutput = job.getOutput();
+				this.neededForLoop = ( (CraftingJob) job ).getNeededForLoop();
 				this.waiting = false;
 				this.isComplete = false;
 				this.markDirty();
@@ -1016,8 +1043,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 	public boolean isBusy()
 	{
 
-		this.tasks.entrySet().removeIf(
-				taskProgressEntry -> taskProgressEntry.getValue().value <= 0 );
+		this.tasks.entrySet().removeIf( taskProgressEntry -> taskProgressEntry.getValue().value <= 0 );
 
 		if( !this.waitingFor.isEmpty() || !this.tasks.isEmpty() )
 		{
@@ -1075,8 +1101,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 		final int hash = System.identityHashCode( this );
 		final int hmm = this.finalOutput == null ? 0 : this.finalOutput.hashCode();
 
-		return Long.toString( now, Character.MAX_RADIX ) + '-' + Integer.toString( hash, Character.MAX_RADIX ) + '-' + Integer.toString( hmm,
-				Character.MAX_RADIX );
+		return Long.toString( now, Character.MAX_RADIX ) + '-' + Integer.toString( hash, Character.MAX_RADIX ) + '-' + Integer.toString( hmm, Character.MAX_RADIX );
 	}
 
 	private NBTTagCompound generateLinkData( final String craftingID, final boolean standalone, final boolean req )
@@ -1103,7 +1128,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 
 	public void getListOfItem( final IItemList<IAEItemStack> list, final CraftingItemList whichList )
 	{
-		switch( whichList )
+		switch ( whichList )
 		{
 			case ACTIVE:
 				for( final IAEItemStack ais : this.waitingFor )
@@ -1174,7 +1199,7 @@ public final class CraftingCPUCluster implements IAECluster, ICraftingCPU
 	{
 		IAEItemStack is;
 
-		switch( storage2 )
+		switch ( storage2 )
 		{
 			case STORAGE:
 				is = this.inventory.getItemList().findPrecise( what );

src/main/java/appeng/parts/misc/ItemHandlerAdapter.java

@@ -19,7 +19,6 @@
 package appeng.parts.misc;
 
 
-import javax.annotation.Nullable;
 import appeng.api.AEApi;
 import appeng.api.config.AccessRestriction;
 import appeng.api.config.Actionable;
@@ -147,6 +146,7 @@ class ItemHandlerAdapter implements IMEInventory<IAEItemStack>, IBaseMonitor<IAE
 			}
 
 			ItemStack extracted;
+
 			int stackSizeCurrentSlot = stackInInventorySlot.getCount();
 			int remainingCurrentSlot = Math.min( remainingSize, stackSizeCurrentSlot );
 
@@ -155,9 +155,17 @@ class ItemHandlerAdapter implements IMEInventory<IAEItemStack>, IBaseMonitor<IAE
 			do
 			{
 				extracted = this.itemHandler.extractItem( i, remainingCurrentSlot, simulate );
-
 				if( !extracted.isEmpty() )
 				{
+					// In order to guard against broken IItemHandler implementations, we'll try to guess if the returned
+					// stack (especially in simulate mode) is the same that was returned by getStackInSlot. This is
+					// obviously not a precise science, but it would catch the previous Forge bug:
+					// https://github.com/MinecraftForge/MinecraftForge/pull/6580
+					if( extracted == stackInInventorySlot )
+					{
+						extracted = extracted.copy();
+					}
+
 					if( extracted.getCount() > remainingCurrentSlot )
 					{
 						// Something broke. It should never return more than we requested...
@@ -166,12 +174,17 @@ class ItemHandlerAdapter implements IMEInventory<IAEItemStack>, IBaseMonitor<IAE
 						extracted.setCount( remainingCurrentSlot );
 					}
 
-					// We're just gonna use the first stack we get our hands on as the template for the rest.
-					// In case some stupid itemhandler (aka forge) returns an internal state we have to do a second
-					// expensive copy again.
+					// Heuristic for simulation: looping in case of simulations is pointless, since the state of the
+					// underlying inventory does not change after a simulated extraction. To still support inventories
+					// that report stacks that are larger than maxStackSize, we use this heuristic
+					if( simulate && extracted.getCount() == extracted.getMaxStackSize() && remainingCurrentSlot > extracted.getMaxStackSize() )
+					{
+						extracted.setCount( remainingCurrentSlot );
+					}
+
 					if( gathered.isEmpty() )
 					{
-						gathered = extracted.copy();
+						gathered = extracted;
 					}
 					else
 					{
@@ -179,11 +192,9 @@ class ItemHandlerAdapter implements IMEInventory<IAEItemStack>, IBaseMonitor<IAE
 					}
 					remainingCurrentSlot -= extracted.getCount();
 				}
-			} while ( !extracted.isEmpty() && remainingCurrentSlot > 0 );
+			} while ( !simulate && !extracted.isEmpty() && remainingCurrentSlot > 0 );
 
 			remainingSize -= stackSizeCurrentSlot - remainingCurrentSlot;
-
-			// Done?
 			if( remainingSize <= 0 )
 			{
 				break;

src/main/java/appeng/tile/storage/TileChest.java

@@ -128,7 +128,7 @@ public class TileChest extends AENetworkPowerTile implements IMEChest, ITerminal
 
 	public TileChest()
 	{
-		this.setInternalMaxPower( PowerMultiplier.CONFIG.multiply( 40 ) );
+		this.setInternalMaxPower( PowerMultiplier.CONFIG.multiply( 128 ) );
 		this.getProxy().setFlags( GridFlags.REQUIRE_CHANNEL );
 		this.config.registerSetting( Settings.SORT_BY, SortOrder.NAME );
 		this.config.registerSetting( Settings.VIEW_MODE, ViewItems.ALL );
@@ -541,7 +541,7 @@ public class TileChest extends AENetworkPowerTile implements IMEChest, ITerminal
 			if( this.cellHandler != null && this.cellHandler.getChannel() == AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) )
 			{
 				final IAEItemStack returns = Platform.poweredInsert( this, this.cellHandler,
-						AEItemStack.fromItemStack( this.inputInventory.getStackInSlot( 0 ) ), this.mySrc );
+				                                                     AEItemStack.fromItemStack( this.inputInventory.getStackInSlot( 0 ) ), this.mySrc );
 
 				if( returns == null )
 				{
@@ -698,7 +698,8 @@ public class TileChest extends AENetworkPowerTile implements IMEChest, ITerminal
 				{
 					TileChest.this.getProxy().getStorage().postAlterationOfStoredItems( this.chan, change, TileChest.this.mySrc );
 				}
-			} catch ( final GridAccessException e )
+			}
+			catch( final GridAccessException e )
 			{
 				// :(
 			}
@@ -738,11 +739,11 @@ public class TileChest extends AENetworkPowerTile implements IMEChest, ITerminal
 				return input;
 			}
 			T injected = super.injectItems( input, mode, src );
-			if (mode == Actionable.MODULATE && ( injected == null || injected.getStackSize() != input.getStackSize() ))
+			if( mode == Actionable.MODULATE && ( injected == null || injected.getStackSize() != input.getStackSize() ) )
 			{
-				if( TileChest.this.getProxy().isActive() && this.getInternalHandler().getCellInv() != null )
+				if( TileChest.this.isPowered() && this.getInternalHandler().getCellInv() != null )
 				{
-					TileChest.this.cellHandler.postChangesToListeners(Collections.singletonList( input.copy().setStackSize( input.getStackSize() - ( injected == null ? 0 : injected.getStackSize() ) ) ), TileChest.this.mySrc  );
+					TileChest.this.cellHandler.postChangesToListeners( Collections.singletonList( input.copy().setStackSize( input.getStackSize() - ( injected == null ? 0 : injected.getStackSize() ) ) ), TileChest.this.mySrc );
 				}
 			}
 			return injected;
@@ -792,9 +793,9 @@ public class TileChest extends AENetworkPowerTile implements IMEChest, ITerminal
 			T extracted = super.extractItems( request, mode, src );
 			if( mode == Actionable.MODULATE && extracted != null )
 			{
-				if( TileChest.this.getProxy().isActive() && this.getInternalHandler().getCellInv() != null )
+				if( TileChest.this.isPowered() && this.getInternalHandler().getCellInv() != null )
 				{
-					TileChest.this.cellHandler.postChangesToListeners(Collections.singletonList( request.copy().setStackSize( -extracted.getStackSize() ) ), TileChest.this.mySrc  );
+					TileChest.this.cellHandler.postChangesToListeners( Collections.singletonList( request.copy().setStackSize( -extracted.getStackSize() ) ), TileChest.this.mySrc );
 				}
 			}
 			return extracted;
@@ -848,7 +849,7 @@ public class TileChest extends AENetworkPowerTile implements IMEChest, ITerminal
 
 	private class FluidHandler implements IFluidHandler
 	{
-		private final IFluidTankProperties[] TANK_PROPS = new IFluidTankProperties[] { new FluidTankProperties( null, Fluid.BUCKET_VOLUME ) };
+		private final IFluidTankProperties[] TANK_PROPS = new IFluidTankProperties[]{new FluidTankProperties( null, Fluid.BUCKET_VOLUME )};
 
 		@Override
 		public int fill( final FluidStack resource, final boolean doFill )
@@ -858,7 +859,7 @@ public class TileChest extends AENetworkPowerTile implements IMEChest, ITerminal
 					.getChannel() == AEApi.instance().storage().getStorageChannel( IFluidStorageChannel.class ) )
 			{
 				final IAEFluidStack results = Platform.poweredInsert( TileChest.this, TileChest.this.cellHandler, AEFluidStack.fromFluidStack( resource ),
-						TileChest.this.mySrc, doFill ? Actionable.MODULATE : Actionable.SIMULATE );
+				                                                      TileChest.this.mySrc, doFill ? Actionable.MODULATE : Actionable.SIMULATE );
 
 				if( results == null )
 				{

src/main/java/appeng/util/Platform.java

@@ -36,6 +36,9 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 
+import gregtech.api.items.IToolItem;
+import ic2.api.item.IC2Items;
+import ic2.api.item.ICustomDamageItem;
 import net.minecraft.block.Block;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.Minecraft;
@@ -73,6 +76,7 @@ import net.minecraftforge.fluids.FluidStack;
 import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.Loader;
 import net.minecraftforge.fml.common.ModContainer;
+import net.minecraftforge.fml.common.Optional;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
 import net.minecraftforge.oredict.OreDictionary;
@@ -134,6 +138,8 @@ import appeng.util.prioritylist.IPartitionList;
  * @version rv2
  * @since rv0
  */
+@Optional.Interface( iface = "gregtech.api.items.IToolItem", modid = "gregtech" )
+@Optional.Interface( iface = "ic2.api.item.ICustomDamageItem", modid = "IC2" )
 public class Platform
 {
 
@@ -176,9 +182,8 @@ public class Platform
 	/**
 	 * This displays the value for encoded longs ( double *100 )
 	 *
-	 * @param n to be formatted long value
+	 * @param n      to be formatted long value
 	 * @param isRate if true it adds a /t to the formatted string
-	 *
 	 * @return formatted long value
 	 */
 	public static String formatPowerLong( final long n, final boolean isRate )
@@ -188,12 +193,14 @@ public class Platform
 		final PowerUnits displayUnits = AEConfig.instance().selectedPowerUnit();
 		p = PowerUnits.AE.convertTo( displayUnits, p );
 
-		final String[] preFixes = { "k", "M", "G", "T", "P", "T", "P", "E", "Z", "Y" };
+		final String[] preFixes = {
+				"k", "M", "G", "T", "P", "T", "P", "E", "Z", "Y"
+		};
 		String unitName = displayUnits.name();
 
 		String level = "";
 		int offset = 0;
-		while( p > 1000 && offset < preFixes.length )
+		while ( p > 1000 && offset < preFixes.length )
 		{
 			p /= 1000;
 			level = preFixes[offset];
@@ -210,7 +217,7 @@ public class Platform
 		final int west_y = forward.zOffset * up.xOffset - forward.xOffset * up.zOffset;
 		final int west_z = forward.xOffset * up.yOffset - forward.yOffset * up.xOffset;
 
-		switch( west_x + west_y * 2 + west_z * 3 )
+		switch ( west_x + west_y * 2 + west_z * 3 )
 		{
 			case 1:
 				return AEPartLocation.EAST;
@@ -237,7 +244,7 @@ public class Platform
 		final int west_y = forward.getFrontOffsetZ() * up.getFrontOffsetX() - forward.getFrontOffsetX() * up.getFrontOffsetZ();
 		final int west_z = forward.getFrontOffsetX() * up.getFrontOffsetY() - forward.getFrontOffsetY() * up.getFrontOffsetX();
 
-		switch( west_x + west_y * 2 + west_z * 3 )
+		switch ( west_x + west_y * 2 + west_z * 3 )
 		{
 			case 1:
 				return EnumFacing.EAST;
@@ -271,8 +278,7 @@ public class Platform
 			{
 				ce = nextEnum( ce );
 			}
-		}
-		while( !validOptions.contains( ce ) || isNotValidSetting( ce ) );
+		} while ( !validOptions.contains( ce ) || isNotValidSetting( ce ) );
 
 		return ce;
 	}
@@ -446,7 +452,7 @@ public class Platform
 	{
 		if( upAndDown )
 		{
-			switch( dir )
+			switch ( dir )
 			{
 				case NORTH:
 					return AEPartLocation.SOUTH;
@@ -466,7 +472,7 @@ public class Platform
 		}
 		else
 		{
-			switch( dir )
+			switch ( dir )
 			{
 				case UP:
 					return AEPartLocation.DOWN;
@@ -519,8 +525,7 @@ public class Platform
 						final double offset_x = ( getRandomInt() % 32 - 16 ) / 82;
 						final double offset_y = ( getRandomInt() % 32 - 16 ) / 82;
 						final double offset_z = ( getRandomInt() % 32 - 16 ) / 82;
-						final EntityItem ei = new EntityItem( w, 0.5 + offset_x + pos.getX(), 0.5 + offset_y + pos.getY(), 0.2 + offset_z + pos.getZ(), i
-								.copy() );
+						final EntityItem ei = new EntityItem( w, 0.5 + offset_x + pos.getX(), 0.5 + offset_y + pos.getY(), 0.2 + offset_z + pos.getZ(), i.copy() );
 						w.spawnEntity( ei );
 					}
 				}
@@ -592,8 +597,7 @@ public class Platform
 
 		try
 		{
-			ITooltipFlag.TooltipFlags tooltipFlag = Minecraft
-					.getMinecraft().gameSettings.advancedItemTooltips ? ITooltipFlag.TooltipFlags.ADVANCED : ITooltipFlag.TooltipFlags.NORMAL;
+			ITooltipFlag.TooltipFlags tooltipFlag = Minecraft.getMinecraft().gameSettings.advancedItemTooltips ? ITooltipFlag.TooltipFlags.ADVANCED : ITooltipFlag.TooltipFlags.NORMAL;
 			return itemStack.getTooltip( Minecraft.getMinecraft().player, tooltipFlag );
 		}
 		catch( final Exception errB )
@@ -764,7 +768,7 @@ public class Platform
 
 	public static int MC2MEColor( final int color )
 	{
-		switch( color )
+		switch ( color )
 		{
 			case 4: // "blue"
 				return 0;
@@ -842,10 +846,10 @@ public class Platform
 			return forward;
 		}
 
-		switch( forward )
+		switch ( forward )
 		{
 			case DOWN:
-				switch( axis )
+				switch ( axis )
 				{
 					case DOWN:
 						return forward;
@@ -864,7 +868,7 @@ public class Platform
 				}
 				break;
 			case UP:
-				switch( axis )
+				switch ( axis )
 				{
 					case NORTH:
 						return AEPartLocation.WEST;
@@ -879,7 +883,7 @@ public class Platform
 				}
 				break;
 			case NORTH:
-				switch( axis )
+				switch ( axis )
 				{
 					case UP:
 						return AEPartLocation.WEST;
@@ -894,7 +898,7 @@ public class Platform
 				}
 				break;
 			case SOUTH:
-				switch( axis )
+				switch ( axis )
 				{
 					case UP:
 						return AEPartLocation.EAST;
@@ -909,7 +913,7 @@ public class Platform
 				}
 				break;
 			case EAST:
-				switch( axis )
+				switch ( axis )
 				{
 					case UP:
 						return AEPartLocation.NORTH;
@@ -923,7 +927,7 @@ public class Platform
 						break;
 				}
 			case WEST:
-				switch( axis )
+				switch ( axis )
 				{
 					case UP:
 						return AEPartLocation.SOUTH;
@@ -944,10 +948,10 @@ public class Platform
 
 	public static EnumFacing rotateAround( final EnumFacing forward, final EnumFacing axis )
 	{
-		switch( forward )
+		switch ( forward )
 		{
 			case DOWN:
-				switch( axis )
+				switch ( axis )
 				{
 					case DOWN:
 						return forward;
@@ -966,7 +970,7 @@ public class Platform
 				}
 				break;
 			case UP:
-				switch( axis )
+				switch ( axis )
 				{
 					case NORTH:
 						return EnumFacing.WEST;
@@ -981,7 +985,7 @@ public class Platform
 				}
 				break;
 			case NORTH:
-				switch( axis )
+				switch ( axis )
 				{
 					case UP:
 						return EnumFacing.WEST;
@@ -996,7 +1000,7 @@ public class Platform
 				}
 				break;
 			case SOUTH:
-				switch( axis )
+				switch ( axis )
 				{
 					case UP:
 						return EnumFacing.EAST;
@@ -1011,7 +1015,7 @@ public class Platform
 				}
 				break;
 			case EAST:
-				switch( axis )
+				switch ( axis )
 				{
 					case UP:
 						return EnumFacing.NORTH;
@@ -1025,7 +1029,7 @@ public class Platform
 						break;
 				}
 			case WEST:
-				switch( axis )
+				switch ( axis )
 				{
 					case UP:
 						return EnumFacing.SOUTH;
@@ -1101,9 +1105,7 @@ public class Platform
 
 		final Vec3d vec31 = vec3.addVector( f7 * d3, f6 * d3, f8 * d3 );
 
-		final AxisAlignedBB bb = new AxisAlignedBB( Math.min( vec3.x, vec31.x ), Math.min( vec3.y, vec31.y ), Math.min( vec3.z,
-				vec31.z ), Math.max( vec3.x, vec31.x ), Math.max( vec3.y, vec31.y ), Math.max( vec3.z, vec31.z ) ).grow(
-						16, 16, 16 );
+		final AxisAlignedBB bb = new AxisAlignedBB( Math.min( vec3.x, vec31.x ), Math.min( vec3.y, vec31.y ), Math.min( vec3.z, vec31.z ), Math.max( vec3.x, vec31.x ), Math.max( vec3.y, vec31.y ), Math.max( vec3.z, vec31.z ) ).grow( 16, 16, 16 );
 
 		Entity entity = null;
 		double closest = 9999999.0D;
@@ -1249,15 +1251,15 @@ public class Platform
 					final T leftover = input.copy();
 					final T split = input.copy();
 
-					leftover.decStackSize(itemToAdd);
-					split.setStackSize(itemToAdd);
-					leftover.add(cell.injectItems(split, Actionable.MODULATE, src));
+					leftover.decStackSize( itemToAdd );
+					split.setStackSize( itemToAdd );
+					leftover.add( cell.injectItems( split, Actionable.MODULATE, src ) );
 
 					src.player().ifPresent( player ->
-					{
-						final long diff = original - leftover.getStackSize();
-						Stats.ItemsInserted.addToPlayer( player, (int) diff );
-					} );
+					                        {
+						                        final long diff = original - leftover.getStackSize();
+						                        Stats.ItemsInserted.addToPlayer( player, (int) diff );
+					                        } );
 
 					return leftover;
 				}
@@ -1265,10 +1267,10 @@ public class Platform
 				final T ret = cell.injectItems( input, Actionable.MODULATE, src );
 
 				src.player().ifPresent( player ->
-				{
-					final long diff = ret == null ? input.getStackSize() : input.getStackSize() - ret.getStackSize();
-					Stats.ItemsInserted.addToPlayer( player, (int) diff );
-				} );
+				                        {
+					                        final long diff = ret == null ? input.getStackSize() : input.getStackSize() - ret.getStackSize();
+					                        Stats.ItemsInserted.addToPlayer( player, (int) diff );
+				                        } );
 
 				return ret;
 			}
@@ -1282,7 +1284,7 @@ public class Platform
 		return input;
 	}
 
-	@SuppressWarnings( { "rawtypes", "unchecked" } )
+	@SuppressWarnings( {"rawtypes", "unchecked"} )
 	public static void postChanges( final IStorageGrid gs, final ItemStack removed, final ItemStack added, final IActionSource src )
 	{
 		for( final IStorageChannel<?> chan : AEApi.instance().storage().storageChannels() )
@@ -1361,8 +1363,7 @@ public class Platform
 			final String locationA = a.getGridBlock().isWorldAccessible() ? a.getGridBlock().getLocation().toString() : "notInWorld";
 			final String locationB = b.getGridBlock().isWorldAccessible() ? b.getGridBlock().getLocation().toString() : "notInWorld";
 
-			AELog.info( "Audit: Node A [isSecure=%b, key=%d, playerID=%d, location={%s}] vs Node B[isSecure=%b, key=%d, playerID=%d, location={%s}]",
-					a_isSecure, a.getLastSecurityKey(), a.getPlayerID(), locationA, b_isSecure, b.getLastSecurityKey(), b.getPlayerID(), locationB );
+			AELog.info( "Audit: Node A [isSecure=%b, key=%d, playerID=%d, location={%s}] vs Node B[isSecure=%b, key=%d, playerID=%d, location={%s}]", a_isSecure, a.getLastSecurityKey(), a.getPlayerID(), locationA, b_isSecure, b.getLastSecurityKey(), b.getPlayerID(), locationB );
 		}
 
 		// can't do that son...
@@ -1423,7 +1424,7 @@ public class Platform
 		float yaw = 0.0f;
 		// player.yOffset = 1.8f;
 
-		switch( side )
+		switch ( side )
 		{
 			case DOWN:
 				pitch = 90.0f;
@@ -1513,16 +1514,14 @@ public class Platform
 				}
 			}
 
-			final boolean checkFuzzy = ae_req.getOre().isPresent() || providedTemplate.getItemDamage() == OreDictionary.WILDCARD_VALUE || providedTemplate
-					.hasTagCompound() || providedTemplate.isItemStackDamageable();
+			final boolean checkFuzzy = ae_req.getOre().isPresent() || providedTemplate.getItemDamage() == OreDictionary.WILDCARD_VALUE || providedTemplate.hasTagCompound() || providedTemplate.isItemStackDamageable();
 
 			if( items != null && checkFuzzy )
 			{
 				for( final IAEItemStack x : items )
 				{
 					final ItemStack sh = x.getDefinition();
-					if( ( Platform.itemComparisons().isEqualItemType( providedTemplate, sh ) || ae_req.sameOre( x ) ) && !ItemStack.areItemsEqual( sh,
-							output ) )
+					if( ( Platform.itemComparisons().isEqualItemType( providedTemplate, sh ) || ae_req.sameOre( x ) ) && !ItemStack.areItemsEqual( sh, output ) )
 					{ // Platform.isSameItemType( sh, providedTemplate )
 						final ItemStack cp = sh.copy();
 						cp.setCount( 1 );
@@ -1681,4 +1680,14 @@ public class Platform
 
 		return isPurified;
 	}
+
+	public static boolean isGTDamageableItem( Item item )
+	{
+		return ( isModLoaded( "gregtech" ) && item instanceof IToolItem );
+	}
+
+	public static boolean isIC2DamageableItem( Item item )
+	{
+		return ( isModLoaded( "IC2" ) && item instanceof ICustomDamageItem );
+	}
 }

src/main/java/appeng/util/inv/BlockingItemHandler.java

@@ -1,20 +1,12 @@
 package appeng.util.inv;
 
-import appeng.api.config.FuzzyMode;
-import appeng.api.storage.data.IAEItemStack;
-import appeng.api.storage.data.IItemList;
 import appeng.helpers.NonBlockingItems;
-import appeng.util.Platform;
-import appeng.util.item.AEItemStack;
-import gregtech.common.items.MetaTool;
 import it.unimi.dsi.fastutil.ints.IntSet;
-import it.unimi.dsi.fastutil.objects.Object2IntMap;
 import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraftforge.items.IItemHandler;
 
-import java.util.Collection;
 import java.util.Iterator;
 
 

src/main/java/appeng/util/item/AEItemStack.java

@@ -18,7 +18,6 @@
 
 package appeng.util.item;
 
-import java.lang.ref.WeakReference;
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
@@ -27,6 +26,8 @@ import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 import com.google.common.primitives.Ints;
+import gregtech.api.items.IToolItem;
+import ic2.api.item.ICustomDamageItem;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
@@ -44,7 +45,7 @@ import appeng.core.Api;
 import appeng.util.Platform;
 
 
-public final class AEItemStack extends AEStack<IAEItemStack> implements IAEItemStack
+public class AEItemStack extends AEStack<IAEItemStack> implements IAEItemStack
 {
 	private static final String NBT_STACKSIZE = "Cnt";
 	private static final String NBT_REQUESTABLE = "Req";
@@ -280,26 +281,17 @@ public final class AEItemStack extends AEStack<IAEItemStack> implements IAEItemS
 	@Override
 	public ItemStack getCachedItemStack( long stackSize )
 	{
-		ItemStack currentCached = null;
 		if( this.cachedItemStack != null )
 		{
-			currentCached = this.cachedItemStack;
+			if( Platform.itemComparisons().isSameItem( this.getDefinition(), this.cachedItemStack ) )
+			{
+				ItemStack currentCached = this.cachedItemStack;
+				this.cachedItemStack = null;
+				currentCached.setCount( Ints.saturatedCast( stackSize ) );
+				return currentCached;
+			}
 		}
-
-		ItemStack itemStack;
-
-		if( currentCached != null )
-		{
-			// Cache is suitable, just update the count
-			itemStack = currentCached;
-			currentCached.setCount( Ints.saturatedCast( stackSize ) );
-		}
-		else
-		{
-			// We need a new stack :-(
-			itemStack = this.createItemStack();
-		}
-		return itemStack;
+		return ItemHandlerHelper.copyStackWithSize( this.getDefinition(), Ints.saturatedCast( stackSize ) );
 	}
 
 	@Override
@@ -370,20 +362,53 @@ public final class AEItemStack extends AEStack<IAEItemStack> implements IAEItemS
 
 	private boolean fuzzyItemStackComparison( ItemStack a, ItemStack b, FuzzyMode mode )
 	{
-		if( a.getItem() == b.getItem() && a.getItem().isDamageable() )
+		if( a.getItem() == b.getItem() && ( a.getItem().isDamageable() || Platform.isGTDamageableItem( a.getItem() ) ) )
 		{
 			if( mode == FuzzyMode.IGNORE_ALL )
 			{
-				return true;
+				if( a.getItem().isDamageable() )
+				{
+					return true;
+				}
+				else if( Platform.isGTDamageableItem( a.getItem() ) )
+				{
+					return a.getItemDamage() == b.getItemDamage();
+				}
 			}
 			else if( mode == FuzzyMode.PERCENT_99 )
 			{
-				return a.getItemDamage() > 1 == b.getItemDamage() > 1;
+				if( Platform.isIC2DamageableItem( a.getItem() ) )
+				{
+					return ( (ICustomDamageItem) a.getItem() ).getCustomDamage( a ) > 1 == ( (ICustomDamageItem) b.getItem() ).getCustomDamage( b ) > 1;
+				}
+				else if( a.getItem().isDamageable() )
+				{
+					return a.getItemDamage() > 1 == b.getItemDamage() > 1;
+				}
+				else if( Platform.isGTDamageableItem( a.getItem() ) )
+				{
+					return ( (IToolItem) a.getItem() ).getItemDamage( a ) > 1 == ( (IToolItem) b.getItem() ).getItemDamage( b ) > 1;
+				}
 			}
 			else
 			{
-				final float percentDamageOfA = (float) a.getItemDamage() / a.getMaxDamage();
-				final float percentDamageOfB = (float) b.getItemDamage() / b.getMaxDamage();
+				float percentDamageOfA = 0;
+				float percentDamageOfB = 0;
+				if( Platform.isIC2DamageableItem( a.getItem() ) )
+				{
+					percentDamageOfA = (float) ( (ICustomDamageItem) a.getItem() ).getCustomDamage( a ) / ( (ICustomDamageItem) a.getItem() ).getMaxCustomDamage( a );
+					percentDamageOfB = (float) ( (ICustomDamageItem) b.getItem() ).getCustomDamage( b ) / ( (ICustomDamageItem) b.getItem() ).getMaxCustomDamage( b );
+				}
+				else if( a.getItem().isDamageable() )
+				{
+					percentDamageOfA = (float) a.getItemDamage() / a.getMaxDamage();
+					percentDamageOfB = (float) b.getItemDamage() / b.getMaxDamage();
+				}
+				else if( Platform.isGTDamageableItem( a.getItem() ) )
+				{
+					percentDamageOfA = (float) ( (IToolItem) a.getItem() ).getItemDamage( a ) / ( (IToolItem) a.getItem() ).getMaxItemDamage( a );
+					percentDamageOfB = (float) ( (IToolItem) b.getItem() ).getItemDamage( b ) / ( (IToolItem) b.getItem() ).getMaxItemDamage( b );
+				}
 
 				return percentDamageOfA > mode.breakPoint == percentDamageOfB > mode.breakPoint;
 			}
@@ -391,4 +416,5 @@ public final class AEItemStack extends AEStack<IAEItemStack> implements IAEItemS
 
 		return false;
 	}
+
 }

src/main/java/appeng/util/item/FuzzyItemVariantList.java

@@ -25,7 +25,8 @@ import java.util.Map;
 import appeng.util.Platform;
 import com.google.common.base.Preconditions;
 
-import gregtech.common.items.MetaTool;
+import gregtech.api.items.IToolItem;
+import ic2.api.item.ICustomDamageItem;
 import net.minecraft.item.ItemStack;
 
 import it.unimi.dsi.fastutil.objects.Object2ObjectAVLTreeMap;
@@ -34,159 +35,210 @@ import it.unimi.dsi.fastutil.objects.Object2ObjectSortedMap;
 import appeng.api.config.FuzzyMode;
 import appeng.api.storage.data.IAEItemStack;
 
+
 /**
  * This variant list is optimized for damageable items, and supports selecting durability ranges with
  * {@link #findFuzzy(IAEItemStack, FuzzyMode)}.
  */
-class FuzzyItemVariantList extends ItemVariantList {
+class FuzzyItemVariantList extends ItemVariantList
+{
 
-    static final SharedStackComparator COMPARATOR = new SharedStackComparator();
+	static final SharedStackComparator COMPARATOR = new SharedStackComparator();
 
-    // NOTE: We only use Object as they key here so we can pass our special DamageBounds to the subMap method.
-    // We NEVER put any keys in this map that are not AESharedItemStacks.
-    private final Object2ObjectSortedMap<Object, IAEItemStack> records = new Object2ObjectAVLTreeMap<>(COMPARATOR);
+	// NOTE: We only use Object as they key here so we can pass our special DamageBounds to the subMap method.
+	// We NEVER put any keys in this map that are not AESharedItemStacks.
+	private final Object2ObjectSortedMap<Object, IAEItemStack> records = new Object2ObjectAVLTreeMap<>( COMPARATOR );
 
-    @Override
-    public Collection<IAEItemStack> findFuzzy(final IAEItemStack filter, final FuzzyMode fuzzy) {
-        ItemStack itemStack = filter.getDefinition();
+	@Override
+	public Collection<IAEItemStack> findFuzzy( final IAEItemStack filter, final FuzzyMode fuzzy )
+	{
+		ItemStack itemStack = filter.getDefinition();
 
-        ItemDamageBound lowerBound = makeLowerBound(itemStack, fuzzy);
-        ItemDamageBound upperBound = makeUpperBound(itemStack, fuzzy);
-        Preconditions.checkState(lowerBound.itemDamage > upperBound.itemDamage);
+		ItemDamageBound lowerBound = makeLowerBound( itemStack, fuzzy );
+		ItemDamageBound upperBound = makeUpperBound( itemStack, fuzzy );
+		Preconditions.checkState( lowerBound.itemDamage > upperBound.itemDamage );
 
-        return this.records.subMap(lowerBound, upperBound).values();
-    }
+		return this.records.subMap( lowerBound, upperBound ).values();
+	}
 
-    @SuppressWarnings("unchecked")
-    @Override
-    Map<AESharedItemStack, IAEItemStack> getRecords() {
-        // We ensure on our end that we NEVER use anything but AESharedItemStack as the key in this map
-        return (Map<AESharedItemStack, IAEItemStack>) (Object) this.records;
-    }
+	@SuppressWarnings( "unchecked" )
+	@Override
+	Map<AESharedItemStack, IAEItemStack> getRecords()
+	{
+		// We ensure on our end that we NEVER use anything but AESharedItemStack as the key in this map
+		return (Map<AESharedItemStack, IAEItemStack>) (Object) this.records;
+	}
 
-    static class ItemDamageBound {
-        final int itemDamage;
+	static class ItemDamageBound
+	{
+		final int itemDamage;
 
-        public ItemDamageBound(int itemDamage) {
-            this.itemDamage = itemDamage;
-        }
-    }
+		public ItemDamageBound( int itemDamage )
+		{
+			this.itemDamage = itemDamage;
+		}
+	}
 
-    /**
-     * This comparator creates a strict and total ordering over all {@link AESharedItemStack} of the same item. To
-     * support selecting ranges of durability, it is defined for type {@link Object} and also accepts
-     * {@link ItemDamageBound} as an argument to compare against.
-     */
-    static class SharedStackComparator implements Comparator<Object> {
-        @Override
-        public int compare(Object a, Object b) {
-            // Either argument can either be a damage bound or a shared item stack
-            // Since we never put damage bounds into the map as keys, only one
-            // of the two arguments can possibly be a bound
-            ItemDamageBound boundA = null;
-            AESharedItemStack stackA = null;
-            int itemDamageA;
-            if (a instanceof ItemDamageBound) {
-                boundA = (ItemDamageBound) a;
-                itemDamageA = boundA.itemDamage;
-            } else {
-                stackA = (AESharedItemStack) a;
-                itemDamageA = stackA.getItemDamage();
-            }
-            ItemDamageBound boundB = null;
-            AESharedItemStack stackB = null;
-            int itemDamageB;
-            if (b instanceof ItemDamageBound) {
-                boundB = (ItemDamageBound) b;
-                itemDamageB = boundB.itemDamage;
-            } else {
-                stackB = (AESharedItemStack) b;
-                itemDamageB = stackB.getItemDamage();
-            }
+	/**
+	 * This comparator creates a strict and total ordering over all {@link AESharedItemStack} of the same item. To
+	 * support selecting ranges of durability, it is defined for type {@link Object} and also accepts
+	 * {@link ItemDamageBound} as an argument to compare against.
+	 */
+	static class SharedStackComparator implements Comparator<Object>
+	{
+		@Override
+		public int compare( Object a, Object b )
+		{
+			// Either argument can either be a damage bound or a shared item stack
+			// Since we never put damage bounds into the map as keys, only one
+			// of the two arguments can possibly be a bound
+			ItemDamageBound boundA = null;
+			AESharedItemStack stackA = null;
+			int itemDamageA;
+			if( a instanceof ItemDamageBound )
+			{
+				boundA = (ItemDamageBound) a;
+				itemDamageA = boundA.itemDamage;
+			}
+			else
+			{
+				stackA = (AESharedItemStack) a;
+				itemDamageA = stackA.getItemDamage();
+			}
+			ItemDamageBound boundB = null;
+			AESharedItemStack stackB = null;
+			int itemDamageB;
+			if( b instanceof ItemDamageBound )
+			{
+				boundB = (ItemDamageBound) b;
+				itemDamageB = boundB.itemDamage;
+			}
+			else
+			{
+				stackB = (AESharedItemStack) b;
+				itemDamageB = stackB.getItemDamage();
+			}
 
-            // When either argument is a damage bound, we just compare the damage values because it is used
-            // only to get a certain damage range out of the map.
-            if (boundA != null || boundB != null) {
-                return Integer.compare(itemDamageB, itemDamageA);
-            }
+			// When either argument is a damage bound, we just compare the damage values because it is used
+			// only to get a certain damage range out of the map.
+			if( boundA != null || boundB != null )
+			{
+				return Integer.compare( itemDamageB, itemDamageA );
+			}
 
-            ItemStack itemStackA = stackA.getDefinition();
-            ItemStack itemStackB = stackB.getDefinition();
-            Preconditions.checkState(itemStackA.getCount() == 1, "ItemStack#getCount() has to be 1");
-            Preconditions.checkArgument(itemStackB.getCount() == 1, "ItemStack#getCount() has to be 1");
+			ItemStack itemStackA = stackA.getDefinition();
+			ItemStack itemStackB = stackB.getDefinition();
+			Preconditions.checkState( itemStackA.getCount() == 1, "ItemStack#getCount() has to be 1" );
+			Preconditions.checkArgument( itemStackB.getCount() == 1, "ItemStack#getCount() has to be 1" );
 
-            if (itemStackA == itemStackB) {
-                return 0;
-            }
+			if( itemStackA == itemStackB )
+			{
+				return 0;
+			}
 
-            // Damaged items are sorted before undamaged items
-            final int damageValue = Integer.compare(itemDamageB, itemDamageA);
-            if (damageValue != 0) {
-                return damageValue;
-            }
+			// Damaged items are sorted before undamaged items
+			final int damageValue = Integer.compare( itemDamageB, itemDamageA );
+			if( damageValue != 0 )
+			{
+				return damageValue;
+			}
 
-            // As a final tie breaker, order by the object identity of the item stack
-            // While this will order seemingly at random, we only need the order of
-            // damage values to be predictable, while still having to satisfy the
-            // complete order requirements of the sorted map
-            return Long.compare(System.identityHashCode(itemStackA), System.identityHashCode(itemStackB));
-        }
-    }
+			// As a final tie breaker, order by the object identity of the item stack
+			// While this will order seemingly at random, we only need the order of
+			// damage values to be predictable, while still having to satisfy the
+			// complete order requirements of the sorted map
+			return Long.compare( System.identityHashCode( itemStackA ), System.identityHashCode( itemStackB ) );
+		}
+	}
 
-    /**
-     * Minecraft reverses the damage values. So anything with a damage of 0 is undamaged and increases the more damaged
-     * the item is.
-     * <p>
-     * Further the used subMap follows [MAX_DAMAGE, MIN_DAMAGE), so to include undamaged items, we have to start with a
-     * lower damage value than 0, while it is fine to use {@link ItemStack#getMaxDamage()} for the upper bound.
-     */
-    private static final int MIN_DAMAGE_VALUE = -1;
+	/**
+	 * Minecraft reverses the damage values. So anything with a damage of 0 is undamaged and increases the more damaged
+	 * the item is.
+	 * <p>
+	 * Further the used subMap follows [MAX_DAMAGE, MIN_DAMAGE), so to include undamaged items, we have to start with a
+	 * lower damage value than 0, while it is fine to use {@link ItemStack#getMaxDamage()} for the upper bound.
+	 */
+	private static final int MIN_DAMAGE_VALUE = -1;
 
-    /*
-     * Keep in mind that the stack order is from most damaged to least damaged, so this lower bound will actually be a
-     * higher number than the upper bound.
-     */
-    static ItemDamageBound makeLowerBound(final ItemStack stack, final FuzzyMode fuzzy)
-    {
-        Preconditions.checkState( stack.getItem().isDamageable() , "Item#isDamageable() has to be true" );
+	/*
+	 * Keep in mind that the stack order is from most damaged to least damaged, so this lower bound will actually be a
+	 * higher number than the upper bound.
+	 */
+	static ItemDamageBound makeLowerBound( final ItemStack stack, final FuzzyMode fuzzy )
+	{
+		Preconditions.checkState( stack.getItem().isDamageable() || ( Platform.isGTDamageableItem( stack.getItem() ) ), "Item#isDamageable() has to be true" );
 
-        int damage;
-        if( fuzzy == FuzzyMode.IGNORE_ALL )
-        {
-            if( stack.getMaxDamage() == 0 )
-            {
-                damage = stack.getItemDamage();
-            }
-            else
-            {
-                damage = stack.getMaxDamage();
-            }
-        }
-        else
-        {
-            final int breakpoint = fuzzy.calculateBreakPoint( stack.getMaxDamage() );
-            damage = stack.getItemDamage() <= breakpoint ? breakpoint : stack.getMaxDamage();
-        }
+		int damage;
+		int maxDamage;
+		if( Platform.isIC2DamageableItem( stack.getItem() ) )
+		{
+			maxDamage = ( (ICustomDamageItem) stack.getItem() ).getMaxCustomDamage( stack );
+			damage = ( (ICustomDamageItem) stack.getItem() ).getCustomDamage( stack );
+		}
+		else if( Platform.isGTDamageableItem( stack.getItem() ) )
+		{
+			maxDamage = ( (IToolItem) stack.getItem() ).getMaxItemDamage( stack );
+			damage = ( (IToolItem) stack.getItem() ).getItemDamage( stack );
+		}
+		else
+		{
+			maxDamage = stack.getMaxDamage();
+			damage = stack.getItemDamage();
+		}
 
-        return new ItemDamageBound( damage );
-    }
+		if( fuzzy == FuzzyMode.IGNORE_ALL )
+		{
+			if( maxDamage != 0 )
+			{
+				damage = maxDamage;
+			}
+		}
+		else
+		{
+			final int breakpoint = fuzzy.calculateBreakPoint( maxDamage );
+			damage = damage <= breakpoint ? breakpoint : maxDamage;
+		}
 
-    /*
-     * Keep in mind that the stack order is from most damaged to least damaged, so this upper bound will actually be a
-     * lower number than the lower bound. It also is exclusive.
-     */
-    static ItemDamageBound makeUpperBound(final ItemStack stack, final FuzzyMode fuzzy) {
-        Preconditions.checkState(stack.getItem().isDamageable() , "Item#isDamageable() has to be true");
+		return new ItemDamageBound( damage );
+	}
 
-        int damage;
-        if (fuzzy == FuzzyMode.IGNORE_ALL) {
-            damage = MIN_DAMAGE_VALUE;
-        } else {
-            final int breakpoint = fuzzy.calculateBreakPoint(stack.getMaxDamage());
-            damage = stack.getItemDamage() <= breakpoint ? MIN_DAMAGE_VALUE : breakpoint;
-        }
+	/*
+	 * Keep in mind that the stack order is from most damaged to least damaged, so this upper bound will actually be a
+	 * lower number than the lower bound. It also is exclusive.
+	 */
+	static ItemDamageBound makeUpperBound( final ItemStack stack, final FuzzyMode fuzzy )
+	{
+		Preconditions.checkState( stack.getItem().isDamageable() || ( Platform.isGTDamageableItem( stack.getItem() ) ), "Item#isDamageable() has to be true" );
 
-        return new ItemDamageBound(damage);
-    }
+		int damage;
+		if( fuzzy == FuzzyMode.IGNORE_ALL )
+		{
+			damage = MIN_DAMAGE_VALUE;
+		}
+		else
+		{
+			int maxDamage;
+			if( Platform.isIC2DamageableItem( stack.getItem() ) )
+			{
+				maxDamage = ( (ICustomDamageItem) stack.getItem() ).getMaxCustomDamage( stack );
+				damage = ( (ICustomDamageItem) stack.getItem() ).getCustomDamage( stack );
+			}
+			else if( Platform.isGTDamageableItem( stack.getItem() ) )
+			{
+				maxDamage = ( (IToolItem) stack.getItem() ).getMaxItemDamage( stack );
+				damage = ( (IToolItem) stack.getItem() ).getItemDamage( stack );
+			}
+			else
+			{
+				maxDamage = stack.getMaxDamage();
+				damage = stack.getItemDamage();
+			}
+
+			final int breakpoint = fuzzy.calculateBreakPoint( maxDamage );
+			damage = damage <= breakpoint ? MIN_DAMAGE_VALUE : breakpoint;
+		}
+
+		return new ItemDamageBound( damage );
+	}
 
 }

src/main/java/appeng/util/item/ItemList.java

@@ -26,7 +26,6 @@ import java.util.NoSuchElementException;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import appeng.util.Platform;
-import gregtech.common.items.MetaTool;
 import net.minecraft.item.Item;
 
 import it.unimi.dsi.fastutil.objects.Reference2ObjectMap;
@@ -36,180 +35,217 @@ import appeng.api.config.FuzzyMode;
 import appeng.api.storage.data.IAEItemStack;
 import appeng.api.storage.data.IItemList;
 
-public final class ItemList implements IItemList<IAEItemStack> {
 
-    private final Reference2ObjectMap<Item, ItemVariantList> records = new Reference2ObjectOpenHashMap<>();
-    /**
-     * We increment this version field everytime an attempt to mutate this item list (or potentially one of its
-     * sub-lists) is made. Iterators will copy the version when they are created and compare it against the current
-     * version whenever they advance to trigger a {@link ConcurrentModificationException}.
-     */
-    private final AtomicInteger version = new AtomicInteger(0);
+public final class ItemList implements IItemList<IAEItemStack>
+{
 
-    @Override
-    public IAEItemStack findPrecise(final IAEItemStack itemStack) {
-        if (itemStack == null) {
-            return null;
-        }
+	private final Reference2ObjectMap<Item, ItemVariantList> records = new Reference2ObjectOpenHashMap<>();
+	/**
+	 * We increment this version field everytime an attempt to mutate this item list (or potentially one of its
+	 * sub-lists) is made. Iterators will copy the version when they are created and compare it against the current
+	 * version whenever they advance to trigger a {@link ConcurrentModificationException}.
+	 */
+	private final AtomicInteger version = new AtomicInteger( 0 );
 
-        ItemVariantList record = this.records.get(itemStack.getItem());
-        return record != null ? record.findPrecise(itemStack) : null;
-    }
+	@Override
+	public IAEItemStack findPrecise( final IAEItemStack itemStack )
+	{
+		if( itemStack == null )
+		{
+			return null;
+		}
 
-    @Override
-    public Collection<IAEItemStack> findFuzzy(final IAEItemStack filter, final FuzzyMode fuzzy) {
-        if (filter == null) {
-            return Collections.emptyList();
-        }
+		ItemVariantList record = this.records.get( itemStack.getItem() );
+		return record != null ? record.findPrecise( itemStack ) : null;
+	}
 
-        ItemVariantList record = this.records.get(filter.getItem());
-        return record != null ? record.findFuzzy(filter, fuzzy) : Collections.emptyList();
-    }
+	@Override
+	public Collection<IAEItemStack> findFuzzy( final IAEItemStack filter, final FuzzyMode fuzzy )
+	{
+		if( filter == null )
+		{
+			return Collections.emptyList();
+		}
 
-    @Override
-    public boolean isEmpty() {
-        return !this.iterator().hasNext();
-    }
+		ItemVariantList record = this.records.get( filter.getItem() );
+		return record != null ? record.findFuzzy( filter, fuzzy ) : Collections.emptyList();
+	}
 
-    @Override
-    public void add(final IAEItemStack itemStack) {
-        version.incrementAndGet();
+	@Override
+	public boolean isEmpty()
+	{
+		return !this.iterator().hasNext();
+	}
 
-        if (itemStack == null) {
-            return;
-        }
+	@Override
+	public void add( final IAEItemStack itemStack )
+	{
+		version.incrementAndGet();
 
-        this.getOrCreateRecord(itemStack.getItem()).add(itemStack);
-    }
+		if( itemStack == null )
+		{
+			return;
+		}
 
-    @Override
-    public void addStorage(final IAEItemStack itemStack) {
-        version.incrementAndGet();
+		this.getOrCreateRecord( itemStack.getItem() ).add( itemStack );
+	}
 
-        if (itemStack == null) {
-            return;
-        }
+	@Override
+	public void addStorage( final IAEItemStack itemStack )
+	{
+		version.incrementAndGet();
 
-        this.getOrCreateRecord(itemStack.getItem()).addStorage(itemStack);
-    }
+		if( itemStack == null )
+		{
+			return;
+		}
 
-    @Override
-    public void addCrafting(final IAEItemStack itemStack) {
-        version.incrementAndGet();
+		this.getOrCreateRecord( itemStack.getItem() ).addStorage( itemStack );
+	}
 
-        if (itemStack == null) {
-            return;
-        }
+	@Override
+	public void addCrafting( final IAEItemStack itemStack )
+	{
+		version.incrementAndGet();
 
-        this.getOrCreateRecord(itemStack.getItem()).addCrafting(itemStack);
-    }
+		if( itemStack == null )
+		{
+			return;
+		}
 
-    @Override
-    public void addRequestable(final IAEItemStack itemStack) {
-        version.incrementAndGet();
+		this.getOrCreateRecord( itemStack.getItem() ).addCrafting( itemStack );
+	}
 
-        if (itemStack == null) {
-            return;
-        }
+	@Override
+	public void addRequestable( final IAEItemStack itemStack )
+	{
+		version.incrementAndGet();
 
-        this.getOrCreateRecord(itemStack.getItem()).addRequestable(itemStack);
-    }
+		if( itemStack == null )
+		{
+			return;
+		}
 
-    @Override
-    public IAEItemStack getFirstItem() {
-        for (final IAEItemStack stackType : this) {
-            return stackType;
-        }
+		this.getOrCreateRecord( itemStack.getItem() ).addRequestable( itemStack );
+	}
 
-        return null;
-    }
+	@Override
+	public IAEItemStack getFirstItem()
+	{
+		for( final IAEItemStack stackType : this )
+		{
+			return stackType;
+		}
 
-    @Override
-    public int size() {
-        int size = 0;
-        for (ItemVariantList entry : records.values()) {
-            size += entry.size();
-        }
+		return null;
+	}
 
-        return size;
-    }
+	@Override
+	public int size()
+	{
+		int size = 0;
+		for( ItemVariantList entry : records.values() )
+		{
+			size += entry.size();
+		}
 
-    @Override
-    public Iterator<IAEItemStack> iterator() {
-        return new ChainedIterator(this.records.values().iterator(), version);
-    }
+		return size;
+	}
 
-    @Override
-    public void resetStatus() {
-        for (final IAEItemStack i : this) {
-            i.reset();
-        }
-    }
+	@Override
+	public Iterator<IAEItemStack> iterator()
+	{
+		return new ChainedIterator( this.records.values().iterator(), version );
+	}
 
-    private ItemVariantList getOrCreateRecord(Item item) {
-        return this.records.computeIfAbsent(item, this::makeRecordMap);
-    }
+	@Override
+	public void resetStatus()
+	{
+		for( final IAEItemStack i : this )
+		{
+			i.reset();
+		}
+	}
 
-    private ItemVariantList makeRecordMap(Item item) {
-        if (item.isDamageable() ) {
-            return new FuzzyItemVariantList();
-        } else {
-            return new NormalItemVariantList();
-        }
-    }
+	private ItemVariantList getOrCreateRecord( Item item )
+	{
+		return this.records.computeIfAbsent( item, this::makeRecordMap );
+	}
 
-    /**
-     * Iterates over multiple item lists as if they were one list.
-     */
-    private static class ChainedIterator implements Iterator<IAEItemStack> {
+	private ItemVariantList makeRecordMap( Item item )
+	{
+		if( item.isDamageable() || Platform.isGTDamageableItem( item ) )
+		{
+			return new FuzzyItemVariantList();
+		}
+		else
+		{
+			return new NormalItemVariantList();
+		}
+	}
 
-        private final AtomicInteger parentVersion;
-        private final int version;
-        private final Iterator<ItemVariantList> parent;
-        private Iterator<IAEItemStack> next;
+	/**
+	 * Iterates over multiple item lists as if they were one list.
+	 */
+	private static class ChainedIterator implements Iterator<IAEItemStack>
+	{
 
-        public ChainedIterator(Iterator<ItemVariantList> iterator, AtomicInteger parentVersion) {
-            this.parent = iterator;
-            this.parentVersion = parentVersion;
-            this.version = parentVersion.get();
-            this.ensureItems();
-        }
+		private final AtomicInteger parentVersion;
+		private final int version;
+		private final Iterator<ItemVariantList> parent;
+		private Iterator<IAEItemStack> next;
 
-        @Override
-        public boolean hasNext() {
-            return next != null && next.hasNext();
-        }
+		public ChainedIterator( Iterator<ItemVariantList> iterator, AtomicInteger parentVersion )
+		{
+			this.parent = iterator;
+			this.parentVersion = parentVersion;
+			this.version = parentVersion.get();
+			this.ensureItems();
+		}
 
-        @Override
-        public IAEItemStack next() {
-            if (this.next == null) {
-                throw new NoSuchElementException();
-            }
-            if (this.version != this.parentVersion.get()) {
-                throw new ConcurrentModificationException();
-            }
+		@Override
+		public boolean hasNext()
+		{
+			return next != null && next.hasNext();
+		}
 
-            IAEItemStack result = this.next.next();
-            this.ensureItems();
-            return result;
-        }
+		@Override
+		public IAEItemStack next()
+		{
+			if( this.next == null )
+			{
+				throw new NoSuchElementException();
+			}
+			if( this.version != this.parentVersion.get() )
+			{
+				throw new ConcurrentModificationException();
+			}
 
-        private void ensureItems() {
-            if (hasNext()) {
-                return; // Still items left in the current one
-            }
+			IAEItemStack result = this.next.next();
+			this.ensureItems();
+			return result;
+		}
 
-            // Find the next iterator willing to return some items...
-            while (this.parent.hasNext()) {
-                this.next = this.parent.next().iterator();
+		private void ensureItems()
+		{
+			if( hasNext() )
+			{
+				return; // Still items left in the current one
+			}
 
-                if (this.next.hasNext()) {
-                    return; // Found one!
-                }
-            }
+			// Find the next iterator willing to return some items...
+			while ( this.parent.hasNext() )
+			{
+				this.next = this.parent.next().iterator();
 
-            // No more items
-            this.next = null;
-        }
-    }
+				if( this.next.hasNext() )
+				{
+					return; // Found one!
+				}
+			}
+
+			// No more items
+			this.next = null;
+		}
+	}
 }