AnimationTree should keep track of the amount of a times an animation has looped, to use with Advance Expressions.

[RobertP-McDowell]

This is a video of how it would work

Untitled.video.-.Made.with.Clipchamp.1.mp4

the ChargeUpLoop animation is looping 3 times, the Advance Expression is causing it to loop a few times before moving on to the ChargeUpEnd animation, here is the expression in case you can't see it:

loop count >= 3

So my proposal is that AnimationTree keeps track of the amount a single animation has looped with the loop_count variable.

Why not an addon?

This can be created with a surprisingly convoluted script, and could be an addon. But even so I think it has enough use cases that it should be implemented in the engine itself, I already have many animations that pretty much require this, and I think several other people would too.

I feel this is the cleanest solution to the problem, and takes great advantage of the Advance Expressions already implemented. Besides that I could see the loop_count variable being used for many other things.