GemRecipe.java

package matyk.aqarium2.recipes;

import matyk.aqarium2.eventHandler.EventHandler;
import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.IRecipe;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;
import net.minecraftforge.registries.IForgeRegistryEntry;

public class GemRecipe extends IForgeRegistryEntry.Impl<IRecipe> implements IRecipe {
	
	@Override
	public boolean matches(InventoryCrafting inv, World worldIn) {
		inv.getStackInSlot(0).getItem().equals(EventHandler.gem);
		return true;
	}

	@Override
	public ItemStack getCraftingResult(InventoryCrafting inv) {
		ItemStack result = new ItemStack(EventHandler.gem);
		NBTTagCompound cmpd = new NBTTagCompound();
		cmpd.setInteger("red", inv.getStackInSlot(0).getTagCompound().getInteger("red"));
		cmpd.setInteger("green", inv.getStackInSlot(0).getTagCompound().getInteger("green"));
		cmpd.setInteger("blue", inv.getStackInSlot(0).getTagCompound().getInteger("blue"));
		result.setTagCompound(cmpd);
		//result.setTagCompound(inv.getStackInSlot(0).getTagCompound());
		return result;
	}

	@Override
	public boolean canFit(int width, int height) {
		return width >= 1 && height >= 1;
	}

	@Override
	public ItemStack getRecipeOutput() {
		ItemStack stack = new ItemStack(EventHandler.gem);
	    NBTTagCompound cmpd = new NBTTagCompound();
	    cmpd.setInteger("red", 0);
		cmpd.setInteger("green", 0);
		cmpd.setInteger("blue", 0);
		stack.setTagCompound(cmpd);
		return stack;
	}

}