45 lines
792 B
Go

package arn
import "errors"
// InventorySlot ...
type InventorySlot struct {
ItemID string `json:"itemId"`
Quantity uint `json:"quantity"`
}
// IsEmpty ...
func (slot *InventorySlot) IsEmpty() bool {
return slot.ItemID == ""
}
// Item ...
func (slot *InventorySlot) Item() *ShopItem {
if slot.ItemID == "" {
return nil
}
item, _ := GetShopItem(slot.ItemID)
return item
}
// Decrease reduces the quantity by the given number.
func (slot *InventorySlot) Decrease(count uint) error {
if slot.Quantity < count {
return errors.New("Not enough items")
}
slot.Quantity -= count
if slot.Quantity == 0 {
slot.ItemID = ""
}
return nil
}
// Increase increases the quantity by the given number.
func (slot *InventorySlot) Increase(count uint) {
slot.Quantity += count
}