oo = 0;
if (spec < 2)
    blocktimer += 1;
if (blocktimer == 20)
{
    xv = x + (sprite_width / 4) + random(sprite_width / 2);
    yv = y + (sprite_height / 4) + random(sprite_height / 4);
    block = scr_dark_marker(xv, yv, spr_blocktree_block);
    with (block)
    {
        hspeed = 0.4 + random(1);
        vspeed = 0.7 + random(1.5);
        gravity_direction = 0;
        gravity = 0.1;
        image_alpha = 0;
        friction = -0.1;
    }
    block.depth = depth - 1;
    block.image_blend = merge_color(c_white, c_black, oo);
    if (oo >= 0.8)
    {
        with (block)
            instance_destroy();
    }
}
if (blocktimer >= 20 && blocktimer <= 30)
{
    with (block)
    {
        if (image_alpha < 1)
            image_alpha += 0.2;
    }
}
if (blocktimer >= 38)
{
    with (block)
        image_alpha -= 0.1;
}
if (blocktimer >= 48)
{
    blocktimer = 0;
    with (block)
        instance_destroy();
}