为什么采用"CC_CONSTRUCTOR_ACCESS:"代码导致在用CCSprite是报错，说不可访问：
CC_CONSTRUCTOR_ACCESS:
Sprite(void);
virtual ~Sprite(void);
/* Initializes an empty sprite with nothing init. */
virtual bool init(void);
/**
* Initializes a sprite with a texture.
*
* After initialization, the rect used will be the size of the texture, and the offset will be (0,0).
*
* @param texture A pointer to an existing Texture2D object.
* You can use a Texture2D object for many sprites.
* @return true if the sprite is initialized properly, false otherwise.
*/
virtual bool initWithTexture(Texture2D *texture);
/**
* Initializes a sprite with a texture and a rect.
*
* After initialization, the offset will be (0,0).
*
* @param texture A pointer to an exisiting Texture2D object.
* You can use a Texture2D object for many sprites.
* @param rect Only the contents inside rect of this texture will be applied for this sprite.
* @return true if the sprite is initialized properly, false otherwise.
*/
virtual bool initWithTexture(Texture2D *texture, const Rect& rect);
/**
* Initializes a sprite with a texture and a rect in points, optionally rotated.
*
* After initialization, the offset will be (0,0).
* @note This is the designated initializer.
*
* @param texture A Texture2D object whose texture will be applied to this sprite.
* @param rect A rectangle assigned the contents of texture.
* @param rotated Whether or not the texture rectangle is rotated.
* @return true if the sprite is initialized properly, false otherwise.
*/
virtual bool initWithTexture(Texture2D *texture, const Rect& rect, bool rotated);
/**
* Initializes a sprite with an SpriteFrame. The texture and rect in SpriteFrame will be applied on this sprite
*
* @param pSpriteFrame A SpriteFrame object. It should includes a valid texture and a rect
* @return true if the sprite is initialized properly, false otherwise.
*/
virtual bool initWithSpriteFrame(SpriteFrame *pSpriteFrame);
/**
* Initializes a sprite with an sprite frame name.
*
* A SpriteFrame will be fetched from the SpriteFrameCache by name.
* If the SpriteFrame doesn't exist it will raise an exception.
*
* @param spriteFrameName A key string that can fected a volid SpriteFrame from SpriteFrameCache
* @return true if the sprite is initialized properly, false otherwise.
*/
virtual bool initWithSpriteFrameName(const std::string& spriteFrameName);
/**
* Initializes a sprite with an image filename.
*
* This method will find filename from local file system, load its content to Texture2D,
* then use Texture2D to create a sprite.
* After initialization, the rect used will be the size of the image. The offset will be (0,0).
*
* @param filename The path to an image file in local file system
* @return true if the sprite is initialized properly, false otherwise.
* @js init
* @lua init
*/
virtual bool initWithFile(const std::string& filename);
/**
* Initializes a sprite with an image filename, and a rect.
*
* This method will find filename from local file system, load its content to Texture2D,
* then use Texture2D to create a sprite.
* After initialization, the offset will be (0,0).
*
* @param filename The path to an image file in local file system.
* @param rect The rectangle assigned the content area from texture.
* @return true if the sprite is initialized properly, false otherwise.
* @js init
* @lua init
*/
virtual bool initWithFile(const std::string& filename, const Rect& rect);