OpenGL first Mini-game

#include  <windows.h>    /* windows's header file  */#include  <gl/gl.h Header file for >      /* opengl32 library  */#include  <gl/glu.h>  Header files for     /* glu32 library  *//*  #include  <gl/glaux.h>    Header file for  // glaux library  */#include  <gl/glut.h>    /* glut library header file  * /#include  <time.h> #include  <iostream>using namespace std;intaa[20][20];  int xx = 0; int yy = 0;intscreenwidth= 640;intscreenheight= 480; intcc= 0;/*  global variable  */int winwidth ( 500 ),  winheight ( 500 ); #define  max_char 128void initialization () {Glclearcolor ( 1.0f, 1.0f, 1.0f, 1.0f  ); /*  set the background color to white  */}void onreshape ( int w, int h ) {winwidth=  w;winheight= h;glViewport ( 0, 0, w, h );       /*  Setting the viewport size   */glmatrixmode ( GL_PROJECTION );  /*  projection mode  */glloadidentity ();                /*  load the unit matrix to initialize the current matrix  */ Gluortho2d ( 0, w, 0, h );       /*  Sets the current drawing area to two-dimensional orthographic projection  */glmatrixmode ( GL_MODELVIEW );   /*  Model view mode  */ Glloadidentity ();                /*   Initialize current matrix  */}void drawstring ( const char* str )        /*  Screen display Fonts  */{static intisFirstCall = 1;static GLuintlists;if  (  isFirstCall ) {isfirstcall = 0;/*  application Max_char consecutive display list number  */lists =  Glgenlists ( MAX_CHAR );/*  The painting of each characterCommands are loaded into the corresponding display list  */wglusefontbitmaps (&NBSP;WGLGETCURRENTDC (), 0, max_char, lists );} /*  calls each character corresponding to the display list, drawing each character  */for  (; *str !=  '; ++str ) {glcalllist (  lists + *str );}} Void ondisplay () {glclear ( GL_COLOR_BUFFER_BIT ); glcolor3f ( 0.0f, 0.0f, 0.0f  );          /*  Set font color  */glrasterpos2i (  0, winheight - 15 );     /*  start position  */drawstring (  "   hello,opengl. "  );        /*  output String  */glutswapbuffers ();                        /*  before and after buffer  */}void myinit () {Glclearcolor ( 1.0, 1.0, 1.0, 0.0  );/*  set the background color to bright white  */glcolor3f (&NBSP;0.0F,&NBSP;0.0F,&NBSP;0.0F&NBSP;);/*  set the drawing color to Black  */glpointsize ( 4.0 );/*  the size of the set point to 4*4 pixels  */glmatrixmode ( gl_ projection );/*  set the appropriate matrix  */glloadidentity (); gluortho2d ( 0.0, screenwidth, 0.0,  screenHeight );} Void mymouse2 ( int button, int state, int x, int y ) {if   ( state == GLUT_DOWN ) {if  ( button == GLUT_RIGHT_BUTTON ) { Glclearcolor ( 1.0f, 0.0f, 0.0f, 0.0f ); Glclear ( GL_COLOR_BUFFER_BIT ); Glflush ();}} return;} Void drawdot ( int x, int y ) {xx =  (x - 30)  / 20;  yy = y / 20;glbegin ( GL_POINTS ); Glvertex2i ( x, y );/*   Draw some points  */if  ( 30 < x && x < 430 &&  0 < y && y < 400 ) cc++;/* aa[yy][xx] == 0;   thought 1 */cout << cc << endl;if  ( cc  >= 4 ) {glvertex2i ( 450, 450 );/*  ideas 3 */mymouse2 ( glut_right_ button, glut_down, 300, 400 );} Glend ();} Void mymouse ( int button, int state, int x, int y ) {if  ( state == GLUT_DOWN ) {if  ( button == GLUT_LEFT_BUTTON ) {Drawdot ( x, screenheight - y  ); Glflush ();} else if  ( button == GLUT_RIGHT_BUTTON ) {Glclearcolor ( 1.0f, 0.0f,  0.0f, 0.0f ); Glclear ( GL_COLOR_BUFFER_BIT ); Glflush ();}} return;} Void mydisplay () {glclear ( GL_COLOR_BUFFER_BIT );/*  clear screen  */glbegin ( GL_POINTS  );/*  draw some points  */for  ( int i = 0; i < 20; i++ ) {for   ( int j = 0; j < 20; j++ ) {if  ( aa[i][j] == 1 ) glvertex2i (  i * 20 + 33, j * 20 + 5 );}} Glend (); Glfloat cursizeline = 2;gllinewidth ( curSizeLine ); Glbegin ( GL_LINES ); for   ( int i = 0; i <= 400; ) {glvertex3f ( 30, 0.0 +  i, 0.0f );  glvertex3f ( 430, 0.0 + i, 0.0f ); glvertex3f (  30.0 + i, 0, 0.0f );  glvertex3f ( 30.0 + i, 400,  0.0f ); i += 20;} Glend (); Glflush ();/*  send all output to display device  */}void funrand () {int s = 4; int x  = 0; int y = 0;srand ( time ( 0 )  );while  ( s--  ) {X= rand ()  % 20; y = rand ()  % 20;aa[x][y]= 1;}} Int check () {For  ( int i = 0; i < 20; i++ ) {for  ( int j =  0; j < 20; j++ ) {if  ( aa[i][j] == 1 ) return (1);}} return (0);} Void main ( int argc, char **argv ) {Funrand (); Glutinit ( &argc, argv  );                         /*  init kit  */glutinitdisplaymode ( glut_single |  GLUT_RGB );  /*  Set display mode  */glutinitwindowsize ( 640, 480 );                  /*  Set Window Size  */glutinitwindowposition ( 100, 150 );              /*  set the position of the window on the screen  */glutcreatewindow (  "Everyone to find fault, find some"  );                 /*  Open Screen window      //Registration callback function  */initialization (); Glutdisplayfunc ( myDisplay );     Glutmousefunc ( myMouse ); Myinit (); Glutreshapefunc ( OnReshape );                    /*  Redraw functions        Print prompt Information  */glutmainloop ();                                   /*  Enter Loop  */}/******************   implement mouse monitor *   Run effect for the panel dot **bug1   dot out of bounds * Some points can return 1   some points do not * * * fuzzy judgment ****************/

OpenGL first Mini-game