Cocos2d-x_3.2 Demo ----------SpriteTest(2)

 1 class SpriteTestDemo : public BaseTest
 2 {
 3 protected:
 4     std::string    _title;// 没用到
 5 
 6 public:
 7     SpriteTestDemo(void);
 8     virtual ~SpriteTestDemo(void);
 9 
10     void restartCallback(Ref* sender);    // 重置场景回调
11     void nextCallback(Ref* sender);        // 下一个场景回调
12     void backCallback(Ref* sender);        // 上一个场景回调
13 
14     // overrides
15     virtual std::string title() const override;        // 标题
16     virtual std::string subtitle() const override;    // 副标题
17     virtual void onEnter() override;// 进入层时
18 };

 1 #define MAX_LAYER    (sizeof(createFunctions) / sizeof(createFunctions[0]))// 测试项数
 2 /* 下一个层 */
 3 Layer* nextSpriteTestAction()
 4 {
 5     sceneIdx++;
 6     sceneIdx = sceneIdx % MAX_LAYER;// 值域0到MAX_LAYER-1
 7 
 8     auto layer = (createFunctions[sceneIdx])();// C++11
 9     return layer;
10 }
11 /* 上一个层 */
12 Layer* backSpriteTestAction()
13 {
14     sceneIdx--;
15     int total = MAX_LAYER;
16     if( sceneIdx < 0 )
17         sceneIdx += total;    
18     
19     auto layer = (createFunctions[sceneIdx])();
20     return layer;
21 }
22 /* 重置层 */
23 Layer* restartSpriteTestAction()
24 {
25     auto layer = (createFunctions[sceneIdx])();
26     return layer;
27 } 
28 
29 //------------------------------------------------------------------
30 //
31 // SpriteTestDemo
32 //
33 //------------------------------------------------------------------
34 
35 SpriteTestDemo::SpriteTestDemo(void): BaseTest(){}
36 
37 SpriteTestDemo::~SpriteTestDemo(void){}
38 
39 std::string SpriteTestDemo::title() const
40 {
41     return "No title";
42 }
43 
44 std::string SpriteTestDemo::subtitle() const
45 {
46     return "";
47 }
48 
49 void SpriteTestDemo::onEnter()
50 {
51     BaseTest::onEnter();  
52 }
53 
54 void SpriteTestDemo::restartCallback(Ref* sender)
55 {
56     auto s = new SpriteTestScene();
57     s->addChild(restartSpriteTestAction()); 

58 
59     Director::getInstance()->replaceScene(s);// 替换本场景
60     s->release();
61 }
62 
63 void SpriteTestDemo::nextCallback(Ref* sender)
64 {
65     auto s = new SpriteTestScene();
66     s->addChild( nextSpriteTestAction() );
67     Director::getInstance()->replaceScene(s);
68     s->release();
69 }
70 
71 void SpriteTestDemo::backCallback(Ref* sender)
72 {
73     auto s = new SpriteTestScene();
74     s->addChild( backSpriteTestAction() );
75     Director::getInstance()->replaceScene(s);
76     s->release();
77 }