for(var xx = startx; xx < xmax;xx+=32)
{
    for(var yy = starty; yy < ymax;yy+=32)
    {   
        var expe = string(xx)+string(yy)
        var should_continue = false;
        for(var i = 0; i <= count; i++)
        {
            if(obj_controller_world_gen.generated_areas[i] == expe)
            {
                should_continue = true;
                break;
            }
        }
        if(should_continue)
        {
            continue;
        }
        
        obj_controller_world_gen.generated_areas[obj_controller_world_gen.generated_count] = expe;
        obj_controller_world_gen.generated_count ++;
        
        if(random_range(0,10) > 5)
        {
            instance_create(xx,yy,obj_asteriod);
        }
    }
}