[Cocos2dx note 013] a class that uses ccrendertexture to create a number for dynamic texture display

The numbers displayed with cclabelttf are not easy to see, so we thought of using images for proxy. Currently, the implementation on the Internet is to make a ccsprite combination of each number. However, I want to dynamically generate textures. If not, you have to manually write one.

Header file

# Ifndef _ x_number_h _ # DEFINE _ x_number_h _ # include <cocos2d. h> # include <xtype. h> namespace cocos2d {// number displayed based on the image/* this class is not a combination of numbers, but rendered into an independent texture ZDH :: xddword is a 64-bit unsigned integer */class ccpicturenumber: Public ccsprite {public: typedef ccsprite inherited; public: ccpicturenumber ();~ Struct (); 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 (numeric); void setnumbertexture (numeric * paramtexture); void setnumbertexture (const char * numeric); interval * getnumbertexture (); ZDH:: xddword getnumber () const; void setnumber (ZDH: xddword paramnumber); int build (); Private: cctexture2d * m_numbertexture; ZDH: xddword m_number;} # endif

Source File

# Include "xpicture_number.h" # include <xstring. h> namespace cocos2d {// construct // build int ccpicturenumber: buildnumber (ZDH: xddword paramnumber, const char * paramnumberresname) from the specified Resource Name) {This-> setnumber (paramnumber); this-> setnumbertexture (cctexturecache: sharedtexturecache ()-> addimage (paramnumberresname); return this-> build ();}// Vertex // build int ccpicturenumber: buildnumber (ZDH: xddword paramnumber, cctexture2d * paramtexture) {This-> setnumber (paramnumber); this-> setnumbertexture (paramtexture ); return this-> build ();} // reset int ccpicturenumber: buildnumber (ZDH: xddw Ord paramnumber) {This-> setnumber (paramnumber); return this-> build ();} // your bool ccpicturenumber: Init (void) {If (! Inherited: Init () return false; return true;} // your ccpicturenumber: ccpicturenumber () {m_numbertexture = nullptr; m_number = 0 ;}// your ccpicturenumber ::~ Else () {If (ZDH: isnotnull (m_numbertexture) {m_numbertexture-> release () ;}// invalid 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 () ;}/// invalid void plaintext: setnumbertexture (const char * paramnumberresname) {This-> setnumbertexture (cctexturecache :: sharedtexturecache ()-> addimage (paramnumberresname);} // specify cctexture2d * values: getnumbertexture () {return m_numbertexture;} // specify int ccpicturenumber: Build () {If (ZDH: isnull (m_numbertexture) return ZDH: err_fail; ZDH: xansistring strnumber (m_number); // convert the integer to the string int inumcount = strnumber. getlength (); // get the number of characters ccsize stsize = m_numbertexture-> getcontentsize (); // get the texture size. Each number in the texture must be of the same width or height, and arrange int inumwidth = (INT) stsize according to 0123456789. width/10; // The width of each number in the texture. Int inumheight = (INT) stsize. height; // The height of each number in the texture. ccrendertexture * PRT = ccrendertexture: Create (inumwidth * inumcount, inumheight); // create a rendering texture object, and number to determine the width of ccsprite * psprite = ccsprite: Create (); // create a Sprite object to draw numbers psprite-> setanchorpoint (0, 0 ); psprite-> settexture (m_numbertexture); ccrect strect; PRT-> begin (); For (INT I = 0; I <inumcount; I ++) {int inumber = strnumber [I]-'0'; // sets the texture area of the number to be displayed, which is the area strect in paramtexture In the parameter. setrect (inumber * inumwidth, 0, inumwidth, inumheight); psprite-> settexturerect (strect, false, strect. size); psprite-> setposition (I * inumwidth, 0); // calculates the displayed offset position psprite-> visit (); // render to PRT} PRT-> end (); // obtain the generated texture this-> settexture (PRT-> getsprite ()-> gettexture ()); // set the displayed content to strect. setrect (0, 0, inumwidth * inumcount, inumheight); this-> settexturerect (strect, false, strect. size); // by default, the texture obtained through ccrendertexture is inverted. here you need to flip this-> setflipy (true); // release the resource Delete psprite; delete PRT; return ZDH: err_ OK;} // export ZDH: xddword ccpicturenumber: getnumber () const {return m_number;} // export void ccpicturenumber: setnumber (ZDH:: xddword paramnumber) {m_number = paramnumber ;}}

Digital Image

Example

        CCPictureNumber * pNum = CCPictureNumber::create();                pNum->BuildNumber(1234567, "ui_play_num05.png");        pNum->setPosition(200, 200);        pNum->setAnchorPoint(0, 0);        this->addChild(pNum, 100);