Re-do Blocking mode logic

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

@@ -46,6 +46,7 @@ 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;
@@ -900,8 +901,10 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 	}
 
 	private static boolean invIsBlocked(InventoryAdaptor inv) {
-		if (AEConfig.instance().isFeatureEnabled(AEFeature.INSANE_BLOCKING_MODE))
-			return !inv.simulateRemove( 1, ItemStack.EMPTY, null ).isEmpty();
+		if (AEConfig.instance().isFeatureEnabled(AEFeature.INSANE_BLOCKING_MODE)) {
+			if (Loader.isModLoaded("gregtech")) return !inv.canRemoveAllExceptCircuits();
+			else return !inv.simulateRemove( 1, ItemStack.EMPTY, null ).isEmpty();
+		}
 		else
 			return inv.containsItems();
 	}

src/main/java/appeng/util/InventoryAdaptor.java

@@ -69,6 +69,8 @@ public abstract class InventoryAdaptor implements Iterable<ItemSlot>
 
 	public abstract ItemStack simulateRemove( int amount, ItemStack filter, IInventoryDestination destination );
 
+	public abstract boolean canRemoveAllExceptCircuits();
+
 	// return what was extracted.
 	public abstract ItemStack removeSimilarItems( int amount, ItemStack filter, FuzzyMode fuzzyMode, IInventoryDestination destination );
 

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

@@ -21,6 +21,7 @@ package appeng.util.inv;
 
 import java.util.Iterator;
 
+import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraftforge.items.IItemHandler;
 
@@ -31,6 +32,7 @@ import appeng.util.Platform;
 
 public class AdaptorItemHandler extends InventoryAdaptor
 {
+	final static ItemStack integratedCircuit = new ItemStack((Item.getByNameOrId("gregtech:meta_item_1")),1,32766); // Gregtech Community Edition Integrated Circuit
 	protected final IItemHandler itemHandler;
 
 	public AdaptorItemHandler( IItemHandler itemHandler )
@@ -264,4 +266,18 @@ public class AdaptorItemHandler extends InventoryAdaptor
 	{
 		return new ItemHandlerIterator( this.itemHandler );
 	}
+
+	@Override
+	public boolean canRemoveAllExceptCircuits()
+	{
+		int slots = this.itemHandler.getSlots();
+		for( int slot = 0; slot < slots; slot++ )
+		{
+			ItemStack is = this.itemHandler.getStackInSlot( slot );
+			if ( is.isEmpty() || is.isItemEqual(integratedCircuit)) continue;
+			return false;
+		}
+		return true;
+	}
+
 }

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

@@ -225,4 +225,10 @@ public class AdaptorList extends InventoryAdaptor
 	{
 		return new StackToSlotIterator( this.i.iterator() );
 	}
+
+	@Override
+	public boolean canRemoveAllExceptCircuits() {
+		return false;
+	}
+
 }

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

@@ -203,4 +203,10 @@ public class IMEAdaptor extends InventoryAdaptor
 	{
 		this.maxSlots = maxSlots;
 	}
+
+	@Override
+	public boolean canRemoveAllExceptCircuits() {
+		return false;
+	}
+
 }