public void Sell(ITradeableItem item, int desiredQuantity)
{
if (_inventoryModel is ITradeInventory)
{
tradeInterface.Sell((_inventoryModel as ITradeInventory), _buyerInventoryModel, item, desiredQuantity);
}
}
public override void Sell(ITradeInventory seller, ITradeInventory buyer, ITradeableItem item, int desiredQuantity)
{
Trade(seller, buyer, item, desiredQuantity, item.CustomerSellPrice);
}
public override void Buy(ITradeInventory seller, ITradeInventory buyer, ITradeableItem item, int desiredQuantity)
{
//Note: Buy and Sell will both call Trade with different parameters
//i.e:
Trade(seller, buyer, item, desiredQuantity, item.CustomerBuyPrice);
}
protected override void Trade(ITradeInventory shop, ITradeInventory customer, ITradeableItem item, int desiredQuantity, float unitPrice)
{
int availableQuantity = 0;
if (shop.Items.Contains(item.InventoryItem))//Only do the trade if the item is in the shop's inventory
{
//1. Get the actual available qunatity
if (item.InventoryItem.Stock >= desiredQuantity)
{
availableQuantity = desiredQuantity;
}
else
{
availableQuantity = item.InventoryItem.Stock;
}
//2. From the qunatity available, get the amount the buyer can carry
int quantityBuyerCanCarry = customer.QuantityCanAdd(item.InventoryItem, availableQuantity);
float totalBuyPrice = unitPrice * quantityBuyerCanCarry;
int quantityBuyerCanAfford = 0;
//3. From the amount the buyer can carry, get the amount the buyer can afford
if (customer.Currency >= totalBuyPrice)
{
quantityBuyerCanAfford = quantityBuyerCanCarry;
}
else
{
quantityBuyerCanAfford = (int)(customer.Currency / unitPrice);
if (customer.Currency <= 0)
{
quantityBuyerCanAfford = 0;
}
}
float actualBuyPrice = unitPrice * quantityBuyerCanAfford;
if (customer.Currency >= actualBuyPrice && quantityBuyerCanCarry > 0)
{
customer.Currency -= actualBuyPrice;
shop.Currency += actualBuyPrice;
InventoryItem buyerItem = item.InventoryItem.SplitStack(quantityBuyerCanAfford);
customer.AddItem(buyerItem);
}
}
}
protected abstract void Trade(ITradeInventory shop, ITradeInventory customer, ITradeableItem item, int desiredQuantity, float unitPrice);
public abstract void Sell(ITradeInventory shop, ITradeInventory customer, ITradeableItem item, int desiredQuantity);