Hi,
If you need some advanced management, I suggest you look at the arrayMaker system, but if you only start with playmaker, this might be too much too soon.
https://hutonggames.fogbugz.com/default.asp?W715 I suggest however the following approach without any thirdparty things:
Name your splines in a very clean manner ( like "spline_x" with x being the index in order of sequence without miss, 1 2 3 4, etc..), then you can generate a random int using the action "Random int", and compose a string with that int and "spline_" as a prefix using "build string" action. Then you find that gameObject using "findGameObject" with this string you just composed. you'll then have your random spline reference.
Now, in order for it not to select it on its way back, it becomes trickier indeed, one dirty, very dirty solution, is to use the same routine for random int selection, but if the int is the same, then you get a new random int, until you get one different, then you compose your string, find your gameObject, etc etc.
Does that make sense?
now, with ArrayMaker, you could maintain a list of them splines, then delete the entry of the spline you selected, and poll in that list safely because the one you picked has been removed. So all in all you would be able to achieve more complex and clener behavior by using ArrayMaker, but you'll need to get acquainted with it ( if you are coming from scripts, then it's covers the full api, so no surprised or twisted api).
Bye,
Jean
