init

gui/pause/inventory/scripts/inventory_data.gd

@@ -0,0 +1,88 @@
+class_name InventoryData extends Resource
+
+@export var slots: Array[SlotData]
+
+func _init() -> void:
+	connect_slots()
+
+func add_item(item: ItemData, count := 1) -> bool:
+	var slot = get_slot_by_item(item)
+	if slot:
+		slot.quantity += count
+		return true
+	var empty_slot_index = get_empty_slot_index()
+	if empty_slot_index > -1:
+		var new_slot = SlotData.new()
+		new_slot.item_data = item
+		new_slot.quantity = count
+		slots[empty_slot_index] = new_slot
+		new_slot.changed.connect(on_slot_changed)
+		return true
+	print("inventory full")
+	return false
+
+func get_slot_by_item(item: ItemData) -> SlotData: 
+	var index = slots.find_custom(func(slot: SlotData): return slot != null and slot.item_data == item)
+	if index > -1:
+		return slots[index]
+	return null
+
+func get_empty_slot_index() -> int:
+	return slots.find_custom(func(slot: SlotData): return !slot)
+
+func get_valid_slots() -> Array[SlotData]:
+	return slots.filter(func(slot: SlotData): return slot);
+
+func connect_slots() -> void:
+	for slot: SlotData in get_valid_slots():
+		slot.changed.connect(on_slot_changed)
+
+func on_slot_changed() -> void:
+	for slot_index in slots.size():
+		var slot: SlotData = slots[slot_index]
+		if slot and slot.quantity < 1:
+			slot.changed.disconnect(on_slot_changed)
+			slots[slot_index] = null
+			emit_changed()
+
+func get_save_data() -> Array:
+	var item_save := []
+	for slot in slots:
+		item_save.append(item_to_save(slot))
+	return item_save
+
+func item_to_save(slot: SlotData) -> Dictionary:
+	var result := {
+		item = "",
+		quantity = 0
+	}
+	if !slot:
+		return result
+	result.quantity = slot.quantity
+	if !slot.item_data:
+		return result
+	result.item = slot.item_data.resource_path
+	return result
+
+func load_save_date(save_data: Array) -> void:
+	var slots_size = slots.size()
+	slots.clear()
+	slots.resize(slots_size)
+	for save_index in save_data.size():
+		slots[save_index] = save_to_item(save_data[save_index])
+	connect_slots()
+
+func save_to_item(save_item: Dictionary) -> SlotData:
+	if save_item.item == "":
+		return null
+	var new_slot := SlotData.new()
+	new_slot.item_data = load(save_item.item)
+	new_slot.quantity = int(save_item.quantity)
+	return new_slot
+
+func use_item(item: ItemData, count := 1) -> bool:
+	for slot in slots:
+		if slot and slot.item_data == item and slot.quantity >= count:
+			slot.quantity -= count
+			return true
+	return false