追跡対象が揃うまで待つ

FollowAgent.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class FollowAgent : MonoBehaviour {

	[SerializeField] ExposeCharacterScene characterScene;
	private UnityEngine.AI.NavMeshAgent agent;
	private Animator animator;
	private static int IDSpeed = Animator.StringToHash("Speed");

	void Awake()
	{
		agent = GetComponent<UnityEngine.AI.NavMeshAgent>();
		animator = GetComponent<Animator>();
	}

	IEnumerator Start()
	{
		enabled = false;
		yield return new WaitWhile( ()=> characterScene.player == null);
		enabled = true;
	}

	void Update () 
	{
		agent.SetDestination(characterScene.player.transform.position);

		animator.SetFloat(IDSpeed, agent.velocity.magnitude, 0.13f, Time.deltaTime);
	}
}