unity3d游戏开发——新手引导

GUI实现，如下：

按“G”键开始新手引导

代码如下：

using UnityEngine;
using System.Collections;

public class OkButton : GUIBase {
    /// <summary>
    /// 按钮图片
    /// </summary>
    public Texture2D OKBTN_a;
    public Texture2D OKBTN_b;
    /// <summary>
    /// 引导图片
    /// </summary>
    public Texture2D HoleTexture;

    private GUIStyle OKBTNStyle;
    private GUIStyle _defaultStyle;
    // Use this for initialization
    public override void Start () {
        base.Start();
        OKBTNStyle = new GUIStyle();
        _defaultStyle = new GUIStyle();
        _defaultStyle.padding = new RectOffset(0, 0, 0, 0);
        _defaultStyle.border = new RectOffset(0, 0, 0, 0);
        if (OKBTN_a == null)
        {
            OKBTN_a = Resources.Load("OKBTN/OK_a") as Texture2D;
            OKBTNStyle.normal.background = OKBTN_a;
        }
        if (OKBTN_b == null)
        {
            OKBTN_b = Resources.Load("OKBTN/OK_b") as Texture2D;
            OKBTNStyle.active.background = OKBTN_b;
        }
        if (HoleTexture == null)
            HoleTexture = Resources.Load("OKBTN/okfight") as Texture2D;
    }
    
    // Update is called once per frame
    public override    void Update () {
        base.Update();
    }
    private bool _isGuider = false;
    void LateUpdate()
    {
        if (Input.GetKeyDown(KeyCode.G))
        {
            _isGuider = true;
        }
    }
    public override void OnGUI()
    {
        base.OnGUI();     
        if (_isGuider) //引导
        {
            GUI.DrawTexture(new Rect(0, 0, 800, 480), HoleTexture);
            Rect rect = new Rect(674, 355, 128, 128);
            OkButton.AddHole(rect, _defaultStyle);
            if (Event.current.type == EventType.MouseUp)
            {
                if (rect.Contains(Event.current.mousePosition))
                {
                    StartCoroutine(disCatch());
                }
            }
        }
        if (GUI.Button(new Rect(674, 355, 128, 128), "", OKBTNStyle))
        {
            print("Click OKBTN");
            _isGuider = false;
        }
        if (GUI.Button(new Rect(0, 0, 128, 128), "", OKBTNStyle))
        {
            print("Click Other");
        }

    }
    /// <summary>
    /// 另外线程处理
    /// </summary>
    /// <returns></returns>
    IEnumerator disCatch()
    {
        //开一个线程处理要处理的事
        yield return 1;
    }
    /// <summary>
    /// 在界面上面开孔，只有此处可以点击，其余的地方屏蔽用户点击，即在该按钮四周加其他按钮，先加的按钮会在上层。后加的按钮被屏蔽。
    /// </summary>
    /// <param name="rect"></param>
    public static void AddHole(Rect rect, GUIStyle style)
    {
        GUI.Button(new Rect(0, 0, GUIBase.DesignStageWidth, rect.y), "", style);//上面的button
        GUI.Button(new Rect(0, rect.yMax, GUIBase.DesignStageWidth, GUIBase.DesignStageHeight - rect.yMax), "", style); //下边的button
        GUI.Button(new Rect(0, rect.y, rect.x, rect.height), "", style);//左边
        GUI.Button(new Rect(rect.xMax, rect.y, GUIBase.DesignStageWidth - rect.xMax, rect.height), "", style);//右边
    }
}