Agitar objeto con Game Maker Studio

Information about object: obj_lego
Sprite: sprite0
Solid: false
Visible: true
Depth: 0
Persistent: false
Parent:
Mask:

Create Event:

execute code:

shake_amount = 0;
shake_decay = 0.25;

alarm[0] = 120;

Alarm Event for alarm 0:

execute code:

shake_amount = 10;
alarm[0] = 120;

Step Event:

execute code:

shake_amount = max(0, shake_amount - shake_decay);

Draw Event:

execute code:

var x1, y1, dir;

dir = irandom_range(0, 359);

x1 = lengthdir_x(round(shake_amount), dir);
y1 = lengthdir_y(round(shake_amount), dir);

draw_sprite_ext(sprite_index, image_index, x + x1, y + y1, image_xscale, image_yscale, image_angle, image_blend, image_alpha);