Player-only crafting

package fer22f.mods.satcom;

import java.util.ArrayList;
import java.util.List;

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.ShapelessRecipes;
import net.minecraft.world.World;

public class RecipeSeeds extends ShapelessRecipes implements IRecipe {

	public static List items = new ArrayList();

	static
	  {
	    items.add(new ItemStack(Item.sugar));
	    items.add(new ItemStack(Item.seeds));
	  }

	public RecipeSeeds()
	{
	    super(new ItemStack(Item.seeds), items);
	}

	public boolean matches(InventoryCrafting matri, World world) {
		if (matri.getSizeInventory() != 4)
		return false;

		boolean foundSeed = false;
		boolean foundSugar = false;

		for (int i = 0; i < matri.getSizeInventory(); i++) {
			if (matri.getStackInSlot(i) == null)
				continue;

			if (matri.getStackInSlot(i).itemID == Item.seeds.itemID)
			{
				foundSeed = true;
			} else

			if (matri.getStackInSlot(i).itemID == Item.sugar.itemID)
			{
				foundSugar = true;
			}
		}

		return (foundSeed && foundSugar);
	}

}