Looping animations in code

Unity Engine
,
1

Hey,
I wanted to let an animation play once from the start and the loop the last 20% a few times.

I use the following line.
animator.Play(“myAnimation”, 0, 0.80f);

This is causing issues because the States OnStateEnter() function gets called each time it loops.
I try get around this by doing the at the top of OnStateEnter()

if (currAnimLoop != 0)
return;//skip OnStateEnter while you are looping.

However this just seems very hacky.

Is there a better way to do this?

Thanks!

2

I’d recommend not using state machine behaviours’ OnStateEnter/OnStateExit, because them getting called has very little to do with if the state’s getting entered and exited, as you’ve discovered.

3

So how do I loop the end of the animation?

4

I think you’re better off solving this in the Animator/State Machine itself, rather than trying to hack it through code. Create a state that is just the last 20% of the animation and one that is the first 80%. Transition straight from the 80% to the 20% in normal case, but have that 20% state loop under whatever circumstances you deem fit.

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5

Agree with Praetor, but let me add this: on import you can import the animation as two separate clips, one from 0 to 80%, the other from 80% to 100%… make 2 mecanim states, one for the first part, one for the last part and loop the last part, and put no transition time or overlap between them. If there’s a hiccup, play with the import boundaries until it works smoothly.

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6

I just refamiliarized myself with this because I am planning to use it in the very near future… it works flawlessly, but it can be touchy to set up. I set it up with a Blender3D object so I included that example below. You’d need to install Blender3D if you wanna import it.

Here’s the Blender3D timeline view of the animation span, and it loops at frame 50:

6398655--713715--Screen Shot 2020-10-08 at 1.44.32 PM.png

Here’s the Unity3D model importer view, which is zero-based instead of 1-based like Blender:

6398655--713718--Screen Shot 2020-10-08 at 1.44.45 PM.png

And the project is attached as a .unitypackage and scene and controller and all the animation setup.

Again, you will NEED Blender3D if you want to see this, otherwise nothing will import.

Video:
https://www.youtube.com/watch?v=33MRgmbphNE

6398655–713730–AnimLooper.unitypackage (79.6 KB)

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