cocos2d-x/cocos/2d/CCScene.h

/****************************************************************************
Copyright (c) 2008-2010 Ricardo Quesada
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2011      Zynga Inc.
Copyright (c) 2013-2014 Chukong Technologies Inc.

http://www.cocos2d-x.org

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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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****************************************************************************/

#ifndef __CCSCENE_H__
#define __CCSCENE_H__

#include <string>
#include "2d/CCNode.h"

NS_CC_BEGIN

class Camera;
class BaseLight;
class Renderer;
class EventListenerCustom;
class EventCustom;
#if CC_USE_PHYSICS
class PhysicsWorld;
#endif
#if CC_USE_3D_PHYSICS
class Physics3DWorld;
#endif
/**
 * @addtogroup _2d
 * @{
 */

/** @class Scene
* @brief Scene is a subclass of Node that is used only as an abstract concept.

Scene and Node are almost identical with the difference that Scene has its
anchor point (by default) at the center of the screen.

For the moment Scene has no other logic than that, but in future releases it might have
additional logic.

It is a good practice to use a Scene as the parent of all your nodes.
 
Scene will create a default camera for you.
*/
class CC_DLL Scene : public Node
{
public:
    /** Creates a new Scene object. 
     *
     * @return An autoreleased Scene object.
     */
    static Scene *create();

    /** Creates a new Scene object with a predefined Size. 
     *
     * @param size The predefined size of scene.
     * @return An autoreleased Scene object.
     * @js NA
     */
    static Scene *createWithSize(const Size& size);

    using Node::addChild;
    virtual std::string getDescription() const override;
    
    /** Get all cameras.
     * 
     * @return The vector of all cameras.
     * @js NA
     */
    const std::vector<Camera*>& getCameras() const { return _cameras; }

    /** Get the default camera.
	 * @js NA
     * @return The default camera of scene.
     */
    Camera* getDefaultCamera() const { return _defaultCamera; }

    /** Get lights.
     * @return The vector of lights.
     * @js NA
     */
    const std::vector<BaseLight*>& getLights() const { return _lights; }
    
    /** Render the scene.
     * @param renderer The renderer use to render the scene.
     * @js NA
     */
    void render(Renderer* renderer);
    
    /** override function */
    virtual void removeAllChildren() override;
    
CC_CONSTRUCTOR_ACCESS:
    Scene();
    virtual ~Scene();
    
    bool init() override;
    bool initWithSize(const Size& size);
    
    void setCameraOrderDirty() { _cameraOrderDirty = true; }
    
    void onProjectionChanged(EventCustom* event);

protected:
    friend class Node;
    friend class ProtectedNode;
    friend class SpriteBatchNode;
    friend class Camera;
    friend class BaseLight;
    friend class Renderer;
    
    std::vector<Camera*> _cameras; //weak ref to Camera
    Camera*              _defaultCamera; //weak ref, default camera created by scene, _cameras[0], Caution that the default camera can not be added to _cameras before onEnter is called
    bool                 _cameraOrderDirty; // order is dirty, need sort
    EventListenerCustom*       _event;

    std::vector<BaseLight *> _lights;
    
private:
    CC_DISALLOW_COPY_AND_ASSIGN(Scene);
    
#if (CC_USE_PHYSICS || CC_USE_3D_PHYSICS)
public:
    virtual void addChild(Node* child, int zOrder, int tag) override;
    virtual void addChild(Node* child, int zOrder, const std::string &name) override;
    
#if CC_USE_PHYSICS
    /** Get the physics world of the scene.
     * @return The physics world of the scene.
     * @js NA
     */
    inline PhysicsWorld* getPhysicsWorld() { return _physicsWorld; }
#endif
    
#if CC_USE_3D_PHYSICS
    /** Get the 3d physics world of the scene.
     * @return The 3d physics world of the scene.
     * @js NA
     */
    inline Physics3DWorld* getPhysics3DWorld() { return _physics3DWorld; }
    
    /** 
     * Set Physics3D debug draw camera.
     */
    void setPhysics3DDebugCamera(Camera* camera);
#endif
    
    /** Create a scene with physics.
     * @return An autoreleased Scene object with physics.
     * @js NA
     */
    static Scene *createWithPhysics();
    
CC_CONSTRUCTOR_ACCESS:
    bool initWithPhysics();
    
protected:
    void addChildToPhysicsWorld(Node* child);

#if CC_USE_PHYSICS
    PhysicsWorld* _physicsWorld;
#endif
    
#if CC_USE_3D_PHYSICS
    Physics3DWorld*            _physics3DWorld;
    Camera*                    _physics3dDebugCamera; //
#endif
#endif // (CC_USE_PHYSICS || CC_USE_3D_PHYSICS)
};

// end of _2d group
/// @}

NS_CC_END

#endif // __CCSCENE_H__