glowtotal = 0;
for (i = 0; i < instance_number(obj_glowshroom); i++)
{
    q = instance_find(obj_glowshroom, i);
    if (q.glow == 0)
        glowtotal += 1;
}
var i = 1;
repeat (5)
{
    if (glowtotal >= i)
        tile_layer_show(1000000 + i);
    else
        tile_layer_hide(1000000 + i);
    i += 1;
}
if (glowtotal >= 4 && global.flag[270] == 0)
    global.flag[270] = 1;