Unity的游戏目录和游戏界面的切换

using UnityEngine;
using System.Collections;
public enum GameGrade{
    EASE,
    NORMAL,
    DIFFCULTY
}
public enum ControlType {
    KEYBOARD,
    TOUCH,
    MOUSE
}

public class GameSeeting : MonoBehaviour {
    public  float volume=1;
    public GameGrade grade = GameGrade.NORMAL;
    public  ControlType controlType=ControlType.KEYBOARD;
    public  bool isFullscreen=false;
    public TweenPosition startPanelTween;
    public TweenPosition optionPaneTween;

    public void OnVolumeGameChanged() {
        volume=UIProgressBar.current.value;

    }
    public void OnGameGradeChanged() {
       print("onControlType:"+UIPopupList.current.value);
        switch (UIPopupList.current.value.Trim()) {
            case "一般":
                grade = GameGrade.NORMAL;
                break;
            case "简单":
                grade = GameGrade.EASE;
                break;
            case "困难":
                grade = GameGrade.DIFFCULTY;
                break;
        }
    }
    public void OnControlTypeChanged() {
      //  print("onControlType"+UIPopupList.current.value);
        switch (UIPopupList.current.value.Trim())
        {
            case "键盘":
                controlType = ControlType.KEYBOARD;
                break;
            case "触摸":
                controlType=ControlType.TOUCH;
                break;
            case "鼠标":
                controlType=ControlType.MOUSE;
                break;
        }

   }
    public void OnIsFullscreenChanged() {
        print("OnIsFullscreen:"+UIToggle.current.value);
        isFullscreen = UIToggle.current.value;

    }
    public void OnOptionClick() {
        startPanelTween.PlayForward();
        optionPaneTween.PlayForward();

    }

    public void OnCompleteSettingButtonClick() {
        startPanelTween.PlayReverse();
        optionPaneTween.PlayReverse();
    }

}