CUAssetManager.h

//
//  CUAssetManager.h
//  Cornell Extensions to Cocos2D
//
//  This module provides a singleton class to support asset management. Assets
//  should always be managed by a central loader.  Cocos2D appears to have these
//  things all over the place. This is a way to centralize everything.
//
//  More importantly, this asset loader allows for scene management, which is not
//  something available in the various asset loaders in Cocos2D.  Scene management
//  allows you to attach assets to a scene, and load and unload them for that scene.
//
//  Author: Walker White
//  Version: 12/3/15
//
#ifndef __CU_ASSET_MANAGER_H__
#define __CU_ASSET_MANAGER_H__

#include <vector>
#include <cocos2d.h>
#include "CUSceneManager.h"

using namespace std;

NS_CC_BEGIN

#pragma mark -
#pragma mark Asset Manager

class CC_DLL AssetManager {
protected:
    static AssetManager* _gManager;
    
    std::vector<SceneManager*> _managers;

    int _scene;
    
public:
#pragma Singleton Access

    static void init();
    
    static void shutdown();
    
    static AssetManager* getInstance() { return _gManager; }

    
#pragma Scene Management

    int createScene();

    void startScene(int scene);
    
    void startAll();
    
    void stopScene(int scene);
    
    void stopAll();

    void deleteScene(int scene);

    void deleteAll();

    bool hasScene(int scene) const { return scene < _managers.size() && _managers[scene] != nullptr; }
    
    
#pragma Scene Access

    int getCurrentIndex() const         { return _scene; }

    void setCurrentIndex(int scene)     { _scene = scene; }

    SceneManager* getCurrent() const    { return (_scene >= 0 ? _managers.at(_scene) : nullptr); }

    SceneManager* at(int scene) const { return _managers.at(scene); }
    
    SceneManager* operator[](int scene) const { return _managers.at(scene); }

private:
    CC_DISALLOW_COPY_AND_ASSIGN(AssetManager);

    AssetManager() : _scene(-1) {}
    
    ~AssetManager() { stopAll(); deleteAll();}
};

NS_CC_END
#endif /* defined(__CU_ASSET_MANAGER_H__) */