extends Object

static var start = null

static func calc_swipe(end):
	if start == null:
		return null
	var delta = end - start
	var biggest = max(abs(delta.x), abs(delta.y))
	if biggest < 50:
		return null
	if abs(delta.x) > abs(delta.y):
		if delta.x < 0:
			return Global.DIRS.LEFT
		else:
			return Global.DIRS.RIGHT
	else:
		if delta.y < 0:
			return Global.DIRS.UP
		else:
			return Global.DIRS.DOWN

static func _input(event: InputEvent):
	var d = null
	if event.is_action_pressed('left_mouse_button'):
		start = event.get_position()
	if event.is_action_released('left_mouse_button'):
		d = calc_swipe(event.get_position())
	if event.is_action_released('key_up'):
		d = Global.DIRS.UP
	if event.is_action_released('key_down'):
		d = Global.DIRS.DOWN
	if event.is_action_released('key_left'):
		d = Global.DIRS.LEFT
	if event.is_action_released('key_right'):
		d = Global.DIRS.RIGHT
	return d