unity 角色旋转

using UnityEngine;
using System.Collections;

public class Triangle : MonoBehaviour {

	public float speed = 90;
	
	// Update is called once per frame
	void Update () {
		transform.Rotate(Vector3.forward*Time.deltaTime*speed);
	}

	public void ChangeSpeed(float speedNew)
	{
		this.speed = speedNew;
	}
}