Pattern registration still a work in progress.

helpers/DualityInterface.java

@@ -24,7 +24,7 @@ import appeng.api.networking.crafting.ICraftingPatternDetails;
 import appeng.api.networking.crafting.ICraftingProvider;
 import appeng.api.networking.crafting.ICraftingProviderHelper;
 import appeng.api.networking.energy.IEnergySource;
-import appeng.api.networking.events.MECraftingPatternUpdate;
+import appeng.api.networking.events.MENetworkCraftingPatternChange;
 import appeng.api.networking.security.BaseActionSource;
 import appeng.api.networking.security.MachineSource;
 import appeng.api.networking.ticking.IGridTickable;
@@ -81,7 +81,10 @@ public class DualityInterface implements IGridTickable, ISegmentedInventory, ISt
 
 	public void updateCraftingList()
 	{
-		Boolean accountedFor[] = new Boolean[patterns.getSizeInventory()];
+		Boolean accountedFor[] = new Boolean[] { false, false, false, false, false, false, false, false, false }; // 9...
+
+		assert (accountedFor.length == patterns.getSizeInventory());
+
 		if ( craftingList != null )
 		{
 			Iterator<ICraftingPatternDetails> i = craftingList.iterator();
@@ -109,6 +112,15 @@ public class DualityInterface implements IGridTickable, ISegmentedInventory, ISt
 			if ( accountedFor[x] == false )
 				addToCraftingList( patterns.getStackInSlot( x ) );
 		}
+
+		try
+		{
+			gridProxy.getGrid().postEvent( new MENetworkCraftingPatternChange( this, gridProxy.getNode() ) );
+		}
+		catch (GridAccessException e)
+		{
+			// :P
+		}
 	}
 
 	public void addToCraftingList(ItemStack is)
@@ -460,16 +472,7 @@ public class DualityInterface implements IGridTickable, ISegmentedInventory, ISt
 		if ( inv == config )
 			readConfig();
 		else if ( inv == patterns )
-		{
+			updateCraftingList();
-			try
-			{
-				gridProxy.getGrid().postEvent( new MECraftingPatternUpdate( this ) );
-			}
-			catch (GridAccessException e)
-			{
-				// :P
-			}
-		}
 		else if ( inv == storage && slot >= 0 )
 		{
 			boolean had = hasWorkToDo();
@@ -704,8 +707,11 @@ public class DualityInterface implements IGridTickable, ISegmentedInventory, ISt
 	@Override
 	public void provideCrafting(ICraftingProviderHelper craftingTracker)
 	{
-		for (ICraftingPatternDetails details : craftingList)
+		if ( craftingList != null )
-			craftingTracker.addCraftingOption( this, details );
+		{
+			for (ICraftingPatternDetails details : craftingList)
+				craftingTracker.addCraftingOption( this, details );
+		}
 	}
 
 }

helpers/PatternHelper.java

@@ -114,9 +114,6 @@ public class PatternHelper implements ICraftingPatternDetails
 		isCrafting = encodedValue.getBoolean( "crafting" );
 		patternItem = is;
 
-		if ( isCrafting == false )
-			throw new RuntimeException( "Only crafting recipes supported." );
-
 		List<IAEItemStack> in = new ArrayList();
 		List<IAEItemStack> out = new ArrayList();
 
@@ -134,15 +131,17 @@ public class PatternHelper implements ICraftingPatternDetails
 			testFrame.setInventorySlotContents( x, gs );
 		}
 
-		standardRecipe = Platform.findMatchingRecipe( crafting, w );
-		correctOutput = standardRecipe.getCraftingResult( crafting );
-
 		if ( isCrafting )
 		{
+			standardRecipe = Platform.findMatchingRecipe( crafting, w );
+			correctOutput = standardRecipe.getCraftingResult( crafting );
 			out.add( AEApi.instance().storage().createItemStack( correctOutput ) );
 		}
 		else
 		{
+			standardRecipe = null;
+			correctOutput = null;
+
 			for (int x = 0; x < outTag.tagCount(); x++)
 			{
 				ItemStack gs = ItemStack.loadItemStackFromNBT( inTag.getCompoundTagAt( x ) );
@@ -158,6 +157,9 @@ public class PatternHelper implements ICraftingPatternDetails
 
 	public boolean isValidItemForSlot(int slotIndex, ItemStack i, World w)
 	{
+		if ( isCrafting == false )
+			throw new RuntimeException( "Only crafting recipes supported." );
+
 		TestStatus result = getStatus( slotIndex, i );
 
 		switch (result)
@@ -209,6 +211,9 @@ public class PatternHelper implements ICraftingPatternDetails
 	@Override
 	public ItemStack getOutput(InventoryCrafting craftingInv, World w)
 	{
+		if ( isCrafting == false )
+			throw new RuntimeException( "Only crafting recipes supported." );
+
 		for (int x = 0; x < craftingInv.getSizeInventory(); x++)
 		{
 			if ( !isValidItemForSlot( x, craftingInv.getStackInSlot( x ), w ) )