x4 = x3;
y4 = y3;
x3 = x2;
y3 = y2;
x2 = x1;
y2 = y1;
x1 = xprevious;
y1 = yprevious;
draw_sprite_ext(sprite_index, image_index, x4, y4, image_xscale, image_yscale, image_angle, image_blend, 0.33);
draw_sprite_ext(sprite_index, image_index, x2, y2, image_xscale, image_yscale, image_angle, image_blend, 0.66);
draw_self();