surprise_dungeon/objects/oPlayer/Step_0.gml

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"));


// Déplacement du joueur

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

if ((deplaceHorizontal > 0 && !place_meeting(x+1, y, oWall))
		|| (deplaceHorizontal < 0 && !place_meeting(x-1, y, oWall))) {
	x += deplaceHorizontal;
}

if ((deplaceVertical > 0 && !place_meeting(x, y+1, oWall))
		|| (deplaceVertical < 0 && !place_meeting(x, y-1, oWall))) {
	y += deplaceVertical;
}

seDeplace = (deplaceHorizontal != 0 or deplaceVertical != 0); 

// Animation des sprites

if (seDeplace) {
	if (deplaceHorizontal = 0) {
		if (deplaceVertical = 1) image_index = 0;
		else image_index = 2;
	}	
	else if (deplaceHorizontal = 1) image_index = 1;
	else image_index = 3;
}