chore: reorganize project structure

scenes/window/draggable.gd

@@ -0,0 +1,44 @@
+extends Control
+
+
+var dragging: bool = false
+var dragging_start_position: Vector2i = Vector2i()
+
+@onready var dragon: Dragon = $".."
+
+
+func _ready() -> void:
+	set_process_input(true)
+
+
+func _input(event) -> void:
+	if event is not InputEventMouseButton:
+		return
+	if event.button_index != MOUSE_BUTTON_LEFT:
+		return
+		
+	if event.pressed:
+		dragging = true
+		dragging_start_position = Vector2i(get_global_mouse_position())
+	else:
+		dragging = false
+		if _is_inside_main_window():
+			_destroy_dragon()
+
+
+func _process(_delta) -> void:
+	if dragging:
+		dragon.position = dragon.position + Vector2i(get_global_mouse_position()) - dragging_start_position
+
+
+func _is_inside_main_window() -> bool:
+	var id: int = get_window().get_window_id()
+	var window_position: Vector2i = DisplayServer.window_get_position(id)
+	var window_size: Vector2i = DisplayServer.window_get_size(id)
+	var rect: Rect2i = Rect2i(window_position, window_size)
+	
+	return rect.intersects(dragon.main_window_rect)
+
+
+func _destroy_dragon() -> void:
+	dragon.queue_free()