Jeżeli jóż coś to:
if keyboard_check(vk_up) && place_free(x,y-4) { y-=4 vspeed=0 }
if keyboard_check(vk_down) && place_free(x,y+4) { y+=4 vspeed=0 }
if keyboard_check(vk_left) && place_free(x-4,y) { x-=4 vspeed=0 }
if keyboard_check(vk_right) && place_free(x+4,y) { x+=4 vspeed=0 }