Behavior Designer Animation Action sample.

AnimationAction.cs

using System.Collections;
using System.Linq;
using System.Reflection;
using BehaviorDesigner.Runtime.Tasks;
using UnityEngine;

internal class DamageAction : Action
{
    private Animator animator;
    private bool isCoroutineRunning;
    private bool isAnimationRunning;

    public override void OnStart()
    {
        animator = GetComponent<Animator>();
        StartCoroutine(PlayAnimation());
    }

    public override TaskStatus OnUpdate()
    {
        return isCoroutineRunning ? TaskStatus.Running : TaskStatus.Success;
    }

    private IEnumerator PlayAnimation()
    {
        isCoroutineRunning = true;

        // start playing animation
        {
            var hash = AnimatorSettingConst.Alicia.StateHashes.Body_Damage;
            animator.Play(hash);
            isAnimationRunning = true;
        }

        // wait until end of the Body_Damage animation
        while (isAnimationRunning)
        {
            yield return null;
            yield return new WaitAnimation(animator, 0);
            isAnimationRunning = false;
        }

        // Body_Damage以外への、何らかのstateへの移行を「開始」しない限り、
        // currentAnimatorState.normalizedTime が１を超えて増え続け、
        // normalizedTimeが常に１を超えているので、次回のWaitAnimationが即終了することになる。
        // 移行を開始することで、normalizedTimeをリセットできる...らしい。(CrossFade中で問題ないらしい)
        {
            var hash = AnimatorSettingConst.Alicia.StateHashes.Body_Idle;
            animator.CrossFade(hash, 100f);
        }

        isCoroutineRunning = false;
    }
}