GameObject.FindWithTag 查找标签

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	public GameObject respawnPrefab;
	public GameObject respawn = GameObject.FindWithTag("Respawn");
	public void Awake() {
		Instantiate(respawnPrefab, respawn.transform.position, respawn.transform.rotation);
	}
}

//在标签为"Respawn"的游戏物体的位置实例化一个respawnPrefab.

var respawnPrefab : GameObject;
var respawn = GameObject.FindWithTag ("Respawn");
Instantiate (respawnPrefab, respawn.transform.position, respawn.transform.rotation);