ios - Cocos2d-x ReplaceScene 导致应用程序崩溃

Question

我正在将我的 iOS 游戏从 Cocos2d 移植到 Cocos2d-x。 我还不是最擅长 C++，所以我无法自己调试它!

我所拥有的是两个场景的简单场景，一个在运行时加载以显示介绍，然后加载另一个场景，第一个介绍场景由以下方式加载:

//Create a scene. it's an autorelease object
CCScene *pScene = landingScene::scene();
// Run intro scene
pDirector->runWithScene(pScene);

现在加载后，一切都很好，直到我尝试通过运行替换该场景:

CCDirector::sharedDirector()->replaceScene(mainScene::scene());

一旦我调用此方法，应用程序就会断言并给出以下消息:

Assertion failed: (index<=arr->num),functionccArrayInsertObjectAtIndex, xxx/libs/cocos2dx/support/data_support/ccCArray.cpp, line 153.

我去线路查看了一下，内容是这样的:

/** Inserts an object at index */
void ccArrayInsertObjectAtIndex(ccArray *arr, CCObject* object, unsigned int index){
    CCAssert(index<=arr->num, "Invalid index. Out of bounds");
    CCAssert(object != NULL, "Invalid parameter!");
...
}

这是我的介绍(登陆)场景 .h 文件的内容:

#ifndef __LANDING_SCENE_H__
#define __LANDING_SCENE_H__

// When you import this file, you import all the cocos2d classes
#include "cocos2d.h"
#include "GameState.h"

class landingScene : public cocos2d::CCLayer {
public:
    landingScene();
    ~landingScene();
    void loadGame();
    static cocos2d::CCScene* scene();
private:
    //The game state Singleton
    GameState *sharedGameState;
};

以及 .cpp 文件:

#include "landingScene.h"
#include "SimpleAudioEngine.h"
#include "mainScene.h"
#include "introScene.h"

using namespace cocos2d;
using namespace CocosDenshion;

landingScene::landingScene(){
    setTouchEnabled( true );

    //Load some sprites here, removed it for simplicity

    //This is where the app crashes
    landingScene::loadGame();
}

landingScene::~landingScene(){
}

CCScene* landingScene::scene(){
    // 'scene' is an autorelease object
    CCScene *scene = CCScene::create();

    // add layer as a child to scene
    CCLayer *layer = new landingScene();
    scene->addChild(layer);

    return scene;
}

void landingScene::loadGame(){
    CCDirector::sharedDirector()->replaceScene(mainScene::scene());
}

这是我想要展示的主场景的内容:

#ifndef _MAIN_SCENE_H_
#define _MAIN_SCENE_H_

//When you import this file, you import all the cocos2d classes
#include "cocos2d.h"
#include "GameState.h"

class mainScene : public cocos2d::CCLayer {
public:
    ~mainScene();
    mainScene();
    static cocos2d::CCScene* scene();
private:
    GameState *sharedGameState;
};
#endif // _MAIN_SCENE_H_

以及 .cpp 文件:

#include "mainScene.h"
#include "cocos2d.h"
#include "SimpleAudioEngine.h"

using namespace cocos2d;
using namespace CocosDenshion;

mainScene::mainScene(){
}

mainScene::~mainScene(){
}

CCScene* mainScene::scene(){
    // 'Scene' is an autorelease object
    CCScene *scene = new CCScene();

    // Add layer as a child to scene
    CCLayer* layer = new mainScene();
    scene->addChild(layer);
    layer->release();

    return scene;
}

Answer 1

原因是您在第一个场景创建完成之前就替换了场景。尝试在onEnter()或onTransitionDidfFinished()中调用replace函数