function scr_orbity(arg0, arg1, arg2, arg3, arg4)
{
    if (arg4 == 0)
        return arg3;
    var __theta = point_direction(arg0, arg1, arg2, arg3);
    var __radius = point_distance(arg0, arg1, arg2, arg3);
    __theta += arg4;
    return arg1 + lengthdir_y(__radius, __theta);
}