keyLeft = keyboard_check(vk_left) or keyboard_check(ord("Q"));
keyRight = keyboard_check(vk_right) or keyboard_check(ord("D"));;
keyUp = keyboard_check(vk_up) or keyboard_check(ord("Z"));;
keyDown = keyboard_check(vk_down) or keyboard_check(ord("S"));;
keyAttack = keyboard_check_pressed(vk_shift);

deplaceHorizontal = keyRight - keyLeft;
deplaceVertical = keyDown - keyUp;

x += deplaceHorizontal;
y += deplaceVertical;