82 lines
2.2 KiB
GDScript
82 lines
2.2 KiB
GDScript
class_name Inventory
|
|
const Item = preload("res://item/Item.gd")
|
|
const ItemStack = preload("res://item/ItemStack.gd")
|
|
|
|
var items:Array[ItemStack] = []
|
|
|
|
enum InventorySortType {
|
|
ITEM_TYPE,
|
|
# ITEM_KEY
|
|
}
|
|
|
|
signal itemAdded(item:Item.Id)
|
|
signal itemRemoved(item:Item.Id)
|
|
signal itemQuantityChanged(item:Item.Id, quantity:int)
|
|
signal inventorySorted(sortBy:InventorySortType, reverse:bool)
|
|
|
|
func setItem(item:Item.Id, quantity:int) -> void:
|
|
if quantity < 0:
|
|
push_error("Cannot set item quantity to negative value, using 0")
|
|
quantity = 0
|
|
|
|
# Is item already in inventory?
|
|
for itemStack in items:
|
|
if itemStack.item != item:
|
|
continue
|
|
|
|
# Item stack already present.
|
|
if quantity == 0:
|
|
items.erase(itemStack)
|
|
itemRemoved.emit(item)
|
|
itemQuantityChanged.emit(item, 0)
|
|
else:
|
|
itemStack.quantity = quantity
|
|
itemQuantityChanged.emit(item, quantity)
|
|
return
|
|
|
|
# Not in stack, create new stack
|
|
var stack:ItemStack = ItemStack.new()
|
|
stack.item = item
|
|
stack.quantity = quantity
|
|
items.append(stack)
|
|
itemAdded.emit(item)
|
|
itemQuantityChanged.emit(item, quantity)
|
|
|
|
func getItemQuantity(item:Item.Id) -> int:
|
|
for itemStack in items:
|
|
if itemStack.item == item:
|
|
return itemStack.quantity
|
|
return 0
|
|
|
|
func addItem(item:Item.Id, quantity:int = 1) -> void:
|
|
# Add can only take positive quantities, otherwise use set or remove
|
|
if quantity <= 0:
|
|
push_error("Cannot add non-positive item quantity")
|
|
return
|
|
self.setItem(item, self.getItemQuantity(item) + quantity)
|
|
|
|
func addStack(stack:ItemStack) -> void:
|
|
self.addItem(stack.item, stack.quantity)
|
|
|
|
func removeItem(item:Item.Id) -> void:
|
|
self.setItem(item, 0)
|
|
|
|
func sort(sortBy:InventorySortType, reverse:bool = false) -> void:
|
|
match sortBy:
|
|
InventorySortType.ITEM_TYPE:
|
|
items.sort_custom(_sortByItemType)
|
|
# InventorySortType.ITEM_KEY:
|
|
# items.sort_custom(_sortByItemKey)
|
|
|
|
if reverse:
|
|
items.reverse()
|
|
|
|
inventorySorted.emit(sortBy, reverse)
|
|
|
|
# Sorters
|
|
func _sortByItemType(a:ItemStack, b:ItemStack) -> int:
|
|
return int(Item.getType(a.item)) - int(Item.getType(b.item))
|
|
|
|
# func _sortByItemKey(a:ItemStack, b:ItemStack) -> int:
|
|
# return Item.getItemById(a.item).key.casecmp_to(Item.getItemById(b.item).key)
|