Finally... a set unit size to work with (all of the values are in meters, so multiplying the meter values by 50 seems to work (that is the unit scale variable)). oh and movement will be next update. let me know if I need to make a tutorial once I'm done in case anyone is interested in doing this sort of thing themselves. (turn on turbo mode by pressing shift and pressing the green flag, it will help with performance issues.) variables and effects:. -size: the pen size. best performance is 20+, best graphics is les than 10. -distance: distance in meters from the wall -angle: the rotation of the wall in degrees relative to the player -height: the height of the wall in meters -player level: the height of the player's eye level in meters width: the width of the wall in meters