Ladder modifier

[Hoikas]

Implement an avatar ladder modifier using MultiStageBehMod

[Hoikas]

@Deledrius I did some looking through the PRPs today trying to find simple ladders that use MultiStageBehMods, given Brice's "adder" commentary. The only ones that I found tended to be special case ladders with fat rungs or special (dis)mount animations. All the stuff from MOUL (and even PotS) appears to use AvLadderMod. Should our ladder modifier should just use AvLadderMod?

[Deledrius]

Yes, I think we should take advantage of the plAvLadderModifier as our primary ladder mechanism. MultiStageBehMod will still be usable for uncommon circumstances (once those are implemented).

[Hoikas]

Assigned to @Deledrius after discussion in IRC

<Deledrius> Oh, no it's used to test the view angle for the ladder.  Interesting.
<Deledrius> It's just a "normal" for the ladder.
<Deledrius> I'm planning to add some helpers that will create default ladders.  You know how you have creation options when adding primitives in the toolbox?  That sort of thing.  Select the number of rungs, etc, and it gives you a base, lined-up, working ladder.  I want to do that with a few other Plasma Primitives too.
<Deledrius> It's in the spot where you can choose the number of segments for a sphere you're creating, that kind of thing.  I've seen other addons do that, as well as the base primitives, so it seems the best place for it.
<Hoikas> Can I assign ladders to you, then? 
<Deledrius> *sigh* I suppose so,```