timer += 1;
if (type == 0)
{
    draw_sprite(sprite_index, image_index, x, y);
    draw_sprite_ext(spr_icecavewall_2, abs(sin(timer / 15) * 2.8), x + sin(timer / 7), y + cos(timer / 8), 1, 1, 0, c_white, al);
}
else
{
    draw_sprite(sprite_index, image_index, x, y);
    draw_sprite_ext(spr_icecavewall_2b, abs(sin(timer / 15) * 2.8), x + sin(timer / 7), y + cos(timer / 8), 1, 1, 0, c_white, al);
}
if (timer >= 100 && timer < 150)
    al += 0.02;
if (timer >= 300)
{
    al -= 0.02;
    if (al <= 0)
    {
        al = 0;
        timer = 0;
    }
}