アニメーションの終了を待つ奴

Sample.cs

using UnityEngine;
using System.Collections;

public class Sample : MonoBehaviour  
{
	private static readonly int hashAttack = Animator.StringToHash("Attack");
	private static readonly int hashIdle = Animator.StringToHash("Idle");

	[SerializeField]
	UnityEngine.UI.Text text;

	IEnumerator AttackAnimationFlow()
	{
		text.text = "攻撃中";
		var animator = GetComponent<Animator> ();
		animator.Play (hashAttack);
		yield return null; // ステートの反映に1フレームいる。解せぬ
		yield return new WaitForAnimation (animator, 0);

		text.text = "待機中";
	}
}

WaitForAnimation.cs

public class WaitForAnimation : CustomYieldInstruction
	{
		Animator m_animator;
		int m_lastStateHash = 0;
		int m_layerNo = 0;

		public WaitAnimation(Animator animator, int layerNo)
		{
			Init(animator, layerNo, animator.GetCurrentAnimatorStateInfo(layerNo).nameHash);
		}

		void Init(Animator animator, int layerNo, int hash)
		{
			m_layerNo = layerNo;
			m_animator = animator;
			m_lastStateHash = hash;
		}

		public override bool keepWaiting {
			get {
				var currentAnimatorState = m_animator.GetCurrentAnimatorStateInfo (m_layerNo);
				return currentAnimatorState.fullPathHash == m_lastStateHash &&
					(currentAnimatorState.normalizedTime < 1 );
			}
		}
	}

public WaitAnimation(Animator animator, int layerNo)
		{
			Init(animator, layerNo, animator.GetCurrentAnimatorStateInfo(layerNo).nameHash);
		}

みすってますよ