122 lines
3.0 KiB
GDScript
122 lines
3.0 KiB
GDScript
@tool
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class_name ItemGrid
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extends GridContainer
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signal item_selected
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@export var slot_scene:PackedScene
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@export var allow_selection:bool = false
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@export var allow_drag_drop:bool = false
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@export var rows:int:
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get:
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return rows
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set(value):
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if value == rows:
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return
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rows = value
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if slot_scene == null or not is_node_ready():
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return
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resize_grid()
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var _slots:Array = []
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var _item_slot_to_index:Dictionary = {}
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var _highlighted_slot_index = -1
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var _highlighted_slot:ItemSlot = null
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var selected_slot:ItemSlot = null
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var _selected_slot_index:int = -1
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func _ready() -> void:
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resize_grid()
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func resize_grid() -> void:
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_item_slot_to_index.clear()
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for child in get_children():
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child.get_parent().remove_child(child)
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child.queue_free()
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_slots.clear()
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while get_child_count() < rows * columns:
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var slot_instance = slot_scene.instantiate() as ItemSlot
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if allow_drag_drop:
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slot_instance.set_drag_drop_flags(ItemSlot.ALLOW_DRAG | ItemSlot.ALLOW_DROP)
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add_child(slot_instance)
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_slots.append(slot_instance)
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if allow_selection and not Engine.is_editor_hint():
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slot_instance.connect("mouse_entered_slot", _on_slot_mouse_entered)
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slot_instance.connect("mouse_left_pressed", _on_slot_mouse_left_pressed)
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_item_slot_to_index[slot_instance] = _item_slot_to_index.size()
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func clear_slots() -> void:
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for slot:ItemSlot in _slots:
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slot.display(ItemStack.new())
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func get_slot_index(slot:ItemSlot) -> int:
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if _item_slot_to_index.has(slot):
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return _item_slot_to_index[slot]
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return -1
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func _on_slot_mouse_entered(slot:ItemSlot):
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if _highlighted_slot != null:
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_highlighted_slot.highlighted = false
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_highlighted_slot_index = -1
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_highlighted_slot = null
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if _item_slot_to_index.has(slot):
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_highlighted_slot_index = _item_slot_to_index[slot]
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_highlighted_slot = slot
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_highlighted_slot.highlighted = true
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func select_slot(index:int) -> void:
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if index < 0 or index > _slots.size():
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item_selected.emit(null)
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return
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_selected_slot_index = index
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selected_slot = _slots[_selected_slot_index]
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selected_slot.selected = true
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item_selected.emit(selected_slot)
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func _on_slot_mouse_left_pressed(slot:ItemSlot):
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if selected_slot:
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selected_slot.selected = false
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if slot == _highlighted_slot:
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_highlighted_slot.highlighted = false
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select_slot(get_slot_index(slot))
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func displayStacks(item_stacks:Array[ItemStack]):
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var item_stack_index = 0
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for slot:ItemSlot in _slots:
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if item_stack_index < item_stacks.size():
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slot.display(item_stacks[item_stack_index])
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else:
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var item_stack:ItemStack = ItemStack.new()
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item_stack.item = null
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slot.display(item_stack)
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item_stack_index = item_stack_index + 1
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func display(item_stacks:Array[ItemResource]):
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var item_stack_index = 0
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for slot:ItemSlot in _slots:
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var item_stack:ItemStack = ItemStack.new()
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if item_stack_index < item_stacks.size():
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item_stack.item = item_stacks[item_stack_index]
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item_stack.count = 1
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else:
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item_stack.item = null
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item_stack_index = item_stack_index + 1
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slot.display(item_stack)
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