one of my first (good) blitz3d things I programmed was a little bot, it pretty much used the same method Matty was talking about, but I created a second entity (pivot) and attached it to my bot... it was forced to look the same direction as my bot but when checking for floors it used "entitypick" and was pointed a little further down... it also checked not as far down for stairs and things... but anyway... Matty's idea... it's a good one :)