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

public class TwoStepBtn : MonoBehaviour {
	public Sprite[] spLeft;
	public Button btnLeft;
	public Sprite[] spRight;
	public Button btnRight;
	public int iDir=0;
	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
		switch (iDir) {
		case 0: //停止不動
			btnLeft.image.sprite=spLeft[0];
			btnRight.image.sprite=spRight[0];
			break;
		case -1: //向左
			btnLeft.image.sprite=spLeft[1];
			btnRight.image.sprite=spRight[0];
			break;
		case 1: //向右
			btnLeft.image.sprite=spLeft[0];
			btnRight.image.sprite=spRight[1];
			break;
		}
	}

	public void LeftPress()
	{
		iDir = -1;
	}

	public void RightPress()
	{
		iDir = 1;
	}


}