if (timer == 5)
{
    heartposx[index] = obj_heart.x + 8;
    heartposy[index] = obj_heart.y + 8;
    index++;
    if (index > totalpoints)
        totalpoints++;
    if (index >= 12)
        index = 0;
    if (totalpoints == 12)
        followindex += 1;
    timer = 0;
}
for (i = 0; i < totalpoints; i++)
{
    var alpha;
    if (i < followindex)
        alpha = ((i + followindex) / 12) + (timer / 60);
    else
        alpha = ((i - followindex) / 12) + (timer / 60);
    draw_sprite_ext(spr_maus_player_trail, 0, heartposx[i], heartposy[i], 1, 1, 0, c_white, alpha);
}