Input Snake

func _input(event) :
	if Input.is_action_just_pressed("ui_right") :
		snake_direction = Vector2(1,0)
	if Input.is_action_just_pressed("ui_left") :
		snake_direction = Vector2(-1,0)
	if Input.is_action_just_pressed("ui_down") :
		snake_direction = Vector2(0,1)
	if Input.is_action_just_pressed("ui_up") :
		snake_direction = Vector2(0,-1)