side = choose(0, 1, 2);
if (side == prevside)
{
    side += 1;
    if (side > 2)
        side = 0;
}
prevside = side;
if (side == 0)
{
    sidex = x - random(30);
    sidey = (y - legh) + random(40);
}
if (side == 1)
{
    sidex = x + random(140);
    sidey = y - 35 - legh - random(10);
}
if (side == 2)
{
    sidex = x + 110 + random(30);
    sidey = (y - legh) + random(40);
}
if (side == 3)
{
    sidex = x + 100 + random(40);
    sidey = (y - legh) + random(40);
}
instance_create(sidex, sidey, obj_mettshine);