專職C++

#ifndef _X_NUMBER_H_
#define _X_NUMBER_H_
#include <cocos2d.h>
#include <xtype.h>
namespace cocos2d
{
    //基于圖片顯示的數(shù)字
    /*
        這個類不是用一個一個數(shù)字拼起來，而是渲染成一個獨(dú)立的紋理
        zdh::XDDWord是一個64位無符號整數(shù)
    */
    class CCPictureNumber : public CCSprite
    {
    public:
        typedef CCSprite Inherited;
    public:
        CCPictureNumber();
        ~CCPictureNumber();
        virtual bool init(void);
        int BuildNumber(zdh::XDDWord paramNumber, const char * paramNumberResName);
        int BuildNumber(zdh::XDDWord paramNumber, CCTexture2D * paramTexture);
        int BuildNumber(zdh::XDDWord paramNumber);
        CREATE_FUNC(CCPictureNumber);

        void setNumberTexture(CCTexture2D * paramTexture);
        void setNumberTexture(const char * paramNumberResName);
        CCTexture2D * getNumberTexture();

        zdh::XDDWord getNumber() const;
        void setNumber(zdh::XDDWord paramNumber);
        int Build();
    private:
        CCTexture2D * m_NumberTexture;
        zdh::XDDWord m_Number;
    };
}
#endif

#include "xpicture_number.h"
#include <xstring.h>
namespace cocos2d
{
    //--------------------------------------------------------------------------------------
    //從指定資源名稱構(gòu)建
    int CCPictureNumber::BuildNumber(zdh::XDDWord paramNumber, const char * paramNumberResName)
    {
        this->setNumber(paramNumber);
        this->setNumberTexture(CCTextureCache::sharedTextureCache()->addImage(paramNumberResName));
        return this->Build();
    }

    //--------------------------------------------------------------------------------------
    //從指定紋理構(gòu)建
    int CCPictureNumber::BuildNumber(zdh::XDDWord paramNumber, CCTexture2D * paramTexture)
    {
        this->setNumber(paramNumber);
        this->setNumberTexture(paramTexture);
        return this->Build();
    }
    //--------------------------------------------------------------------------------------
    int CCPictureNumber::BuildNumber(zdh::XDDWord paramNumber)
    {
        this->setNumber(paramNumber);
        return this->Build();
    }

    //--------------------------------------------------------------------------------------
    bool CCPictureNumber::init(void)
    {
        if (!Inherited::init()) return false;
        return true;
    }
    //--------------------------------------------------------------------------------------
    CCPictureNumber::CCPictureNumber()
    {
        m_NumberTexture = nullptr;
        m_Number = 0;
    }
    //--------------------------------------------------------------------------------------
    CCPictureNumber::~CCPictureNumber()
    {
        if (zdh::isNotNULL(m_NumberTexture))
        {
            m_NumberTexture->release();
        }
    }
    //--------------------------------------------------------------------------------------
    void CCPictureNumber::setNumberTexture(CCTexture2D * paramTexture)
    {
        if (m_NumberTexture == paramTexture) return;
        if (zdh::isNotNULL(m_NumberTexture))
        {
            m_NumberTexture->release();
        }
        m_NumberTexture = paramTexture;
        if (zdh::isNotNULL(m_NumberTexture))
        {
            m_NumberTexture->retain();
        }
    }
    //--------------------------------------------------------------------------------------
    void CCPictureNumber::setNumberTexture(const char * paramNumberResName)
    {
        this->setNumberTexture(CCTextureCache::sharedTextureCache()->addImage(paramNumberResName));
    }

    //--------------------------------------------------------------------------------------
    CCTexture2D * CCPictureNumber::getNumberTexture()
    {
        return m_NumberTexture;
    }
    //--------------------------------------------------------------------------------------
    int CCPictureNumber::Build()
    {
        if (zdh::isNULL(m_NumberTexture)) return zdh::ERR_FAIL;

        zdh::XAnsiString strNumber(m_Number); //將整數(shù)轉(zhuǎn)換為字符串
        int iNumCount = strNumber.getLength();   //取得字符個數(shù)
        CCSize stSize = m_NumberTexture->getContentSize(); //取得紋理大小，要求紋理中每個數(shù)字都是等寬等高，并依照0123456789排列
        int iNumWidth = (int)stSize.width / 10;    //紋理中每個數(shù)字的寬度
        int iNumHeight = (int)stSize.height;    //紋理中每個數(shù)字的高度

        CCRenderTexture * pRT = CCRenderTexture::create(iNumWidth * iNumCount, iNumHeight); //創(chuàng)建渲染紋理對象，并數(shù)字確定寬度
        CCSprite * pSprite    = CCSprite::create(); //創(chuàng)建精靈對象，用于繪制數(shù)字
        pSprite->setAnchorPoint(0, 0);
        pSprite->setTexture(m_NumberTexture);
        CCRect stRect;
        pRT->begin();
        for (int i = 0; i < iNumCount; i++)
        {
            int iNumber = strNumber[i] - '0';
            //設(shè)置要顯示數(shù)字的紋理區(qū)域，這個區(qū)域是指參數(shù)中paramTexture中區(qū)域
            stRect.setRect(iNumber * iNumWidth, 0, iNumWidth, iNumHeight);
            pSprite->setTextureRect(stRect, false, stRect.size);
            pSprite->setPosition(i * iNumWidth, 0);                  //計(jì)算顯示的偏移位置
            pSprite->visit(); //渲染到pRT中
        }
        pRT->end();
        //取得生成的紋理
        this->setTexture(pRT->getSprite()->getTexture());
        //設(shè)置顯示的內(nèi)容
        stRect.setRect(0, 0, iNumWidth * iNumCount, iNumHeight);
        this->setTextureRect(stRect, false, stRect.size);
        //默認(rèn)的情況下，通過CCRenderTexture得到的紋理是倒立的，這里需要做一下翻轉(zhuǎn)
        this->setFlipY(true);
        //釋放資源
        delete pSprite;
        delete pRT;
        return zdh::ERR_OK;
    }
    //--------------------------------------------------------------------------------------
    zdh::XDDWord CCPictureNumber::getNumber() const
    {
        return m_Number;
    }
    //--------------------------------------------------------------------------------------
    void CCPictureNumber::setNumber(zdh::XDDWord paramNumber)
    {
        m_Number = paramNumber;
    }

}

        CCPictureNumber * pNum = CCPictureNumber::create();
        
        pNum->BuildNumber(1234567, "ui_play_num05.png");
        pNum->setPosition(200, 200);
        pNum->setAnchorPoint(0, 0);

        this->addChild(pNum, 100);