inventory_slot.gd

extends Node2D
class_name InventorySlot

@export var held_item:Item = null
@export var accepted_item_types:Array[Item.Type] = [Item.Type.FOOD, Item.Type.CLOTHING]

@export var normal_color:Color
@export var reject_color:Color
@export var accept_color:Color

signal AcceptedItem(item:Item)
signal RemovedItem(item:Item)

# Called when the node enters the scene tree for the first time.
func _ready():
  $DropArea.will_accept = self.will_accept

func will_accept(draggable:Draggable):
  if not draggable.owner_class is Item:
    return false
  var as_item:Item = draggable.owner_class
  return as_item.item_type in accepted_item_types

func OnHover(draggable:Draggable, accepted:bool):
  if accepted:
    $DropArea.debug_color = accept_color
  else:
    $DropArea.debug_color = reject_color

func OnStopHover(draggable:Draggable, accepted:bool):
  $DropArea.debug_color = normal_color

func RecieveItem(draggable:Draggable):
  if not draggable.owner_class is Item:
    return

  var new_item:Item = draggable.owner_class
  held_item = new_item
  held_item.ChangedInventory.connect(RemoveItem)
  AcceptedItem.emit(held_item)

func RemoveItem(from:InventorySlot, to:InventorySlot):
  if to == self:
    return
  var old_item = held_item
  held_item.ChangedInventory.disconnect(RemoveItem)
  held_item = null
  RemovedItem.emit(old_item)

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
  pass