Hi Bruce,
I recall Brian had a good ladder script. It is as follows:
;Artificial Intelligence Script
;by xplosys
;Header
desc = Ladder (Automatic in range)
;Triggers
:state=0:state=6,coloff,setalphafade=0
:state=1,raycastup=60 80:state=5,unassociateplayer
:state=1:associateplayer,moveup=2
:state=5,raycastup=0 -20:state=6
:state=5:moveup=-2
:state=6,plrdistwithin=40:state=1,associateplayer
;End of Script
The thing with his script was that when you were in front of the ladder, it would "lift you up" to the top and as long as a segment ceiling was in place, you would not shoot straight up. In my WW2 game it worked perfect, but in an open level I'd shoot from layer 5 to 10 shouting "This is going to hurt" LOL That was one method.
The common method now is not using a script. Instead, we model ladders with the "slanted step platform", which is transparent and allows the player to walk up or walk down a ladder.
Currently, we tried to look at making a script for descending a ladder, but found the common method more to be practical. However, if you find an idea and need some help testing it out, I'm more than happy to do so.
Twitter: @NFoxMedia