Zrób tak:
if keyboard_check_pressed(vk_left)
{move_towards_point(x-5,y,1)} else
if keyboard_check_pressed(vk_right)
{move_towards_point(x+5,y,1)} else
if keyboard_check_pressed(vk_down)
{move_towards_point(x,y+5,1)} else
if keyboard_check_pressed(vk_up)
{move_towards_point(x,y-5,1)}