Use DirectX to move child graphics (Sprite animation)

Use DirectX to move child graphics (Sprite animation)
This is what I learned from this book today, the book is called "Beginning DirectX9" This book is in English. Fortunately, I still can read English. The book gives a lot of DirectX programming beginners How to do DirectX programming. Today I saw a sprite (sub-graphic, also called Sprite Graphic) Chapter, which describes how to use DirectX to draw sprite graphics. The contents of the book are still relatively understandable. But there is a flaw, that is, there is no man who has the CD-ROM of this book. So our domestic readers have to read the PDF file. I was studying this book with some foundation, or 4 months ago, I didn't know how to correct the mistakes in the book. As I said above, there are still many flaws in the book. This will have to be corrected by our readers. On the basis of today's one-hour effort and my basic framework, I finally realized the effect of the book to be shown. Here is my code, the comments I translated and added, very understood. If you still do not understand, you can ask me alone or thread, I will be patient to answer the questions of everyone.

First of all is my MainFrame.cpp file.

  Code:/*---------------------------------------------------------------------------  Shimin production   e-mail:jiangcaiyang123@163.com   file name: MainFrame.cpp   Role: Loading sub-image (Sprite)  ----------------------------- -----------------------------------------------*/  /*----------------------------------------------- ---------------------------*/     //  header files    #include <windows.h>     #include <d3d9.h>    #include <d3dx9.h>    #include <stdio.h>      //  library Files    #pragma  comment ( lib,  "d3d9.lib")    #pragma   Comment ( lib,  "d3dx9.lib")      //  defined macros    #define  jclassname    "optimized program"    #define  JCAPTION   "program demo"    #define  window_width  640    #define &NBSP;WINDOW_HEIGHT&NBSP;480    #define  fullscreen  false//  Full Screen Switch    #define &NBSP;SAVE_RELEASE ( p )  if  ( p )  p->release (); p = null;      //  adjusting compiler settings    #pragma  warning ( disable: 4100 )        #if  FULLSCREEN    //  settings for full screen or not    #define  window_ Style ws_ex_topmost | ws_popup | ws_visible    #else    #define   Window_style ws_caption | ws_sysmenu    #endif      /*--------------- -------------------------------------------------------------*/     //  Global variables     LPDIRECT3D9&NBSP;G_JD3D&NBSP;=&NBSP;NULL;//&NBSP;D3D structural body    Lpdirect3ddevice9 g_jdevice &NBSP;=&NBSP;NULL;//&NBSP;D3D device structure    lpd3dxfont g_fpsfont = null;//  pointer to fps font    Rect g_fpsfontpos = { window_width - 100, window_height - 15,     Window_width, window_height };// fps Rectangle    int g_framecount = 0;//  Frame counter    int g_ lasttime = 0;//  record the time of the previous second    int g_currenttime = 0;//  record the current time     char g_fpsstr[25] = { 0 };//  string that records the current frame rate      /*--------- -------------------------------------------------------------------*/  //  Initialize the sub-graphic header file     #include "Sprite.h"      /*------------------------------------------------------------ ----------------*/  //  Function declaration    bool initialized3d ( HWND hWnd )    {    D3DDISPLAYMODE displayMode;        //creating D3D objects      g_jd3d = direct3dcreate9 ( D3D_SDK_VERSION );     if  ( g_jd3d == null )      return FALSE;        //  Get display mode     if  ( failed ( g_JD3D-> Getadapterdisplaymode ( D3DADAPTER_DEFAULT, &displayMode )  )  )       return FALSE;        // d3d Display parameters     D3DPRESENT_PARAMETERS jd3dpp;     zeromemory ( &jd3dpp, sizeof ( jd3dpp )  );        //  Initialize d3dpresent_parameters     jd3dpp. windowed               = ! fullscreen;    &NBSP;JD3DPP. backbufferwidth    = window_width;    &NBSP;JD3DPP. backbufferheight    = window_height;    &NBSP;JD3DPP. Swapeffect             = d3dswapeffect_discard;    &NBSP;JD3DPP. backbufferformat       = displaymode.format;    &NBSP;JD3DPP. enableautodepthstencil = true;    &NBSP;JD3DPP. autodepthstencilformat = d3dfmt_d16;        //  Create device     if (FAILED ( g_jd3d->createdevice (  d3dadapter_default,       d3ddevtype_hal, hwnd, d3dcreate_software_ vertexprocessing,       &jd3dpp, &g_JDevice )  )         return FALSE;        //  Set rendering status     g_jdevice->setrenderstate ( d3drs_ lighting, false );     g_jdevice->setrenderstate ( D3DRS_ZENABLE, D3DZB_TRUE );        //  Create fonts     if  ( failed ( d3dxcreatefont ( g _jdevice,  15, 0, 1, 1, 0, default_charset,      out_default_precis,  default_quality, default_pitch | ff_dontcare,       "Impact", & g_fpsfont )  )  )  return FALSE;        if  ( initsprites ()  == FALSE )       return false;        return TRUE;   }   /*----------------------------------------------------------------------------*/   //  Release All Resources    void releasememory ( void )    {     Save_release ( g_JD3D );     save_release ( g_JDevice );     save_release ( g_FPSFont );   }   /*----------------------------------------------------------------------------*/   //  Rendering Screen    void renderscene ( void )    {    //  counter start count (in milliseconds)     g_currentTime =  GetTickCount ();     if  ( g_currentTime - g_lastTime > 1000 )     {     sprintf_s ( g_FPSstr, 25,  "Current fps:%d", g_framecount );      g_lastTime = g_currentTime;      g_FrameCount = 0;     }     else g_FrameCount++;        g_jdevice->clear ( 0, NULL, D3DCLEAR_TARGET |  d3dclear_zbuffer,       d3dcolor_xrgb ( 179, 221, 247),  1.0f, 0 );//  Clear Screen        //  render sub-graphics     rendersprite ();        //  Start Rendering     g_jdevice->beginscene ();        g_fpsfont->drawtext (&nbsP Null, g_fpsstr, -1, &g_fpsfontpos, dt_center,      d3dcolor_xrgb (  255, 255, 255 )  );//  display font        //  End Rendering     g_jdevice->endscene ();        g_jdevice->present ( NULL, NULL, NULL, NULL );   }   /*----------------------------------------------------------------------------*/   //  callback function for handling messages    Hresult callback myappproc ( HWND hWnd,  uint msg, wparam wparam, lparam lparam )    {    switch   ( msg )     {    case wm_destroy:       PostQuitMessage ( 0 );      return 0;     case wm_keydown:      if  ( wparam == vk_escape  )  pOstquitmessage ( 0 );      return 0;     }     return  (HRESULT) DefWindowProc ( hwnd, msg, wparam,  lParam );   };   /*----------------------------------------------------------------------------*/  //   Entrance to the program, main functions    Int winapi winmain ( HINSTANCE hInst, HINSTANCE  hprevinst, lpstr cmd, int show )    {    //  settings window  Class structure and register it     wndclassex jwndcls = { sizeof ( jWndCls ),  cs_ classdc, myappproc, 0l, 0l, hinst,       null, loadcursor (  null, idc_arrow)  , 0, NULL, JCLASSNAME, NULL };     registerclassex ( &jWndCls );        //  Setup window and display window     hwnd hwnd = createwindow ( jclassname, jcaption, window_style, 100, 40,      window_width, window_height, getdesktopwindow (),  null, jwndcls.hinstance,  null);     if  ( hWnd == NULL )      return FALSE;     showwindow ( hWnd, SW_SHOWDEFAULT );     updatewindow ( hWnd );        //  Initialization Settings     if  ( initialized3d ( hWnd )  == FALSE )      return FALSE;        //  go to message loop     MSG msg;     zeromemory ( &msg, sizeof ( msg )  );     while ( msg.message != WM_QUIT )     {      if  ( peekmessage ( &msg, null, 0u, 0u, pm_remove )  )      {      translatemessage ( &msg  );       dispatchmessage ( &msg );      }      else     {      //   Rendering Screen       renderscene ();      }     }        //  program end, free memory all resources     releasememory ();        //  Unblock window registration     unregisterclass ( JCLASSNAME,  jwndcls.hinstance );     return  ( INT )  msg.wParam;   }  

Then there is my Sprite.h file:
  Code:/*---------------------------------------------------------------------------  Shimin production   e-mail:jiangcaiyang123@163.com   file name: Sprite.h   Role: Loading sub-image (Sprite)  ---------------------------------- ------------------------------------------*/  //  Precompiled    #ifndef  _sprite_h_     #define &NBSP;_SPRITE_H_   /*------------------------------------------------------------------- ---------*/  //  header file    #include <time.h>   /*---------------------------- ------------------------------------------------*/  //  define macros    #define for sub-shapes   sprite_width 48    #define &NBSP;SPRITE_HEIGHT&NBSP;48    #define  SCRN_WIDTH   window_width    #define  scrn_height  window_height   /*----------------- -----------------------------------------------------------*/  //  To customize the structure of a sub-graph &NBSP;&NBsp Struct stsprite    {    stsprite (): MoveX ( 1 ), Movey ( 1 ) {}// Default constructors     RECT srcRect;  //  locations     int posX;            // x coordinates     int posY;            // y coordinates     int moveX;     Specifies how many x pixels to go at a time     int moveY;  //  specifies how many y pixels to walk at once       } spritestruct[10];   /*----------------------------------------------------------------------------*/  //   Global variables    pointers to idirect3dsurface9* surface;//  planes      /*----------------- -----------------------------------------------------------*/  //  Initialization sub-graphic    bool  Initsprites ( void )    {    //  genThe off-screen plane is used to display graphics     if  ( failed ( g_jdevice->createoffscreenplainsurface ( 480,        48,       D3DFMT_X8R8G8B8,        d3dpool_default,       &surface,       NULL )  )  )  return false;        //  Load sub-graphics     if  ( failed (  D3DXLoadSurfaceFromFile ( surface, NULL, NULL,        "Sprite.tga",  null, d3dx_default, 0, null )  )  )  return false;        int i;     srand (  ( unsigned int ) time ( NULL )  );//  generate random numbers         //  Initialize 10 sub-graphs     for  ( i= 0; i< 10;  i++ )     {     spritestruct[i].srcrect.top = 0;      spriteStruct[i].srcRect.left = i * SPRITE_WIDTH;      spriteStruct[i].srcRect.right = spriteStruct[i].srcRect.left +  Sprite_width;      spriteStruct[i].srcRect.bottom = SPRITE_HEIGHT;    &NBSP;&NBSP;SPRITESTRUCT[I].POSX = ABS (rand ()%scrn_width-sprite_width);
Spritestruct[i].posy = ABS (rand ()%scrn_height-sprite_height);    } return true; }/*----------------------------------------------------------------------------*//render sub-shape void Rendersprite (Voi     d) {idirect3dsurface9* backbuffer = NULL;     int i; <