Problem by using custom crafting recipe

[#ÖCT]

Hey,

I wanna to remove more than one item, out of the crafting grid. 

All works fine, only when the input is smaler than 2 x remove stack, it doesn`t work...

 

Here is my code:

Spoiler

//RECIPE
package oect.lwaltens.luckyblockoect.recipe;

import net.minecraft.client.renderer.texture.Stitcher.Slot;
import net.minecraft.init.Items;
import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.IRecipe;
import net.minecraft.item.crafting.Ingredient;
import net.minecraft.item.crafting.ShapedRecipes;
import net.minecraft.util.NonNullList;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.registry.RegistrySimple;
import net.minecraft.world.World;
import oect.lwaltens.luckyblockoect.LuckyBlockOect;
import oect.lwaltens.luckyblockoect.registeries.LuckyBlockOect_Items;
import oect.lwaltens.luckyblockoect.registeries.LuckyBlockOect_Shop;

public class Shop_Slot_0 implements IRecipe
{


	@Override
	public ResourceLocation getRegistryName() {
		return new ResourceLocation("slot_0");
	}


	@Override
	public ItemStack getCraftingResult(InventoryCrafting craftMatrix) {
	
		return new ItemStack(LuckyBlockOect_Items.blendgrenate, 1);
	}

	@Override
	public boolean canFit(int width, int height) {
		
		return true;
	}

	@Override
	public ItemStack getRecipeOutput() 
	{
		return new ItemStack(LuckyBlockOect_Items.blendgrenate, 1);
	}

	@Override
	public Class<IRecipe> getRegistryType() {

		return IRecipe.class;
	}
	
	@Override
	public boolean matches(InventoryCrafting craftMatrix, World worldIn) {
		if (craftMatrix.getSizeInventory() != 15) return false;
		boolean matches = false;
		for (int i = 0; i < 1; i++) {
			matches = craftMatrix.getStackInSlot(i) != null && craftMatrix.getStackInSlot(i).getItem() == Items.DIAMOND && 	craftMatrix.getStackInSlot(i).getCount() > 4;
			if (!matches) break;
		}
		return matches;
		 
	}

	@Override
	public IRecipe setRegistryName(ResourceLocation name) {
		return LuckyBlockOect_Shop.slot_0;
	}
}
      
      
//Item Crafted Event (EventHandler is regitered both Sides with the EVENT_BUS
      
      	@SubscribeEvent
	public void onCraft(ItemCraftedEvent event) 
	{
		IInventory craftMatrix = event.craftMatrix;
		Item i = event.crafting.getItem();
		
		
		if(i == LuckyBlockOect_Items.blendgrenate)
		{
			ItemStack size = craftMatrix.getStackInSlot(0);
			size.shrink(4);
		}
      
      

 

 

[Draco18s]

2 minutes ago, #ÖCT said:

only when the input is smaler than 2 x remove stack, it doesn`t work

Vanilla is not set up to handle recipe stacks being anything other than 1.

So don't do that.