RecipeVerifier.java 文件源码

/**
 * Returns true if the recipe contained in this verifier matches the given
 * {@link ShapelessRecipe}.
 * 
 * @param recipe
 * @return True if the recipe was verified.
 */
boolean verify(ShapelessRecipe recipe) {
    List<ItemStack> ingredients = recipe.getIngredientList();
    for (int i = 0; i < rows; i++) {
        RECIPEITEM: for (int j = 0; j < columns; j++) {
            ItemStack recipeItem = matrix[i][j];
            if (recipeItem == null)
                continue;
            for (Iterator<ItemStack> it = ingredients.iterator(); it.hasNext();) {
                ItemStack ingredient = it.next();

                if (ItemUtils.recipeIngredientEqualsTypeAndData(ingredient, recipeItem)) {
                    int amount = ingredient.getAmount();
                    if (amount == 1)
                        it.remove();
                    else
                        ingredient.setAmount(amount - 1);
                    continue RECIPEITEM;
                }
            }
            // An item in the matrix is not on the ingredient list.
            return false;
        }
    }

    // If the list of ingredients was exhausted, recipe verified.
    if (ingredients.size() == 0)
        return true;

    // Unsatisfied ingredients remain.
    return false;
}