// Improvments can be made. We cant take the .7 iron bars leftover from recipe and use them in another recipie. Thats what this assumes.
// We should actually be able to calculate waste.
// Handle the case where both products are used in the main thinkg being built
private void Calculate(string item, PartsList shoppingList, IRecipeFilter filter, decimal q = 1)
{
// Take from our unused first
q = shoppingList.Consume(item, q);
if (q == 0)
{
return;
}
var recipes = _gameContext.Recipes.GetRecipes(item, filter);
if (!recipes.Any())
{
return; // Item cant be crafted with a recipe.. Iron Ore etc..
}
if (recipes.Count() > 1)
{
throw new Exception($"Multiple recipes were found that produce {item}.");
}
var recipe = recipes.Single();
var principal = recipe.Products.Single(p => p.Name == item);
// q = how many we need, count = how many times this recipe must be executed.
var count = q / principal.Quantity.Compute(_gameContext.Player);
foreach (var product in recipe.Products)
{
// This recipe has additional products, all will be considered unused
if (product != principal)
{
shoppingList.IncrementUnused(product.Name, product.Quantity.Compute(_gameContext.Player) * count);
continue;
}
// Portion of principal that will be unused
var unused = q - (count * principal.Quantity.Compute(_gameContext.Player));
if (unused > 0)
{
shoppingList.IncrementUnused(product.Name, unused);
}
foreach (var ingredient in recipe.Ingredients)
{
var quantity = ingredient.Quantity.Compute(_gameContext.Player) * count;
shoppingList.Increment(ingredient.Name, quantity);
Calculate(ingredient.Name, shoppingList, filter, quantity);
}
}
}
public PartsList Calculate(string item, decimal quantity = 1, IRecipeFilter filter = null)
{
if (filter != null)
{
filter = new CompositeFilter(new ProductFilter(), filter);
}
else
{
filter = new ProductFilter();
}
var partsList = new PartsList();
Calculate(item, partsList, filter, quantity);
return(partsList);
}
public IEnumerable <Recipe> GetRecipes(string itemName, IRecipeFilter filter)
{
return(filter.Execute(itemName, _recipes));
}