一个opengl实现的很简陋的双人对战五子棋

开始自学openGL

对着红宝书撸了几天后做的，这书看着真心累，像个API手册一样

#include <GL/glut.h>#include <stdio.h>#include <string.h>#include <math.h>#include <stack>GLint length=600;GLboolean isBlack;//轮到黑棋GLboolean isStart;//是否开始GLint chessboard[15][15];//记录棋盘棋子,0表示没有棋子,1表示黑子,-1表示白子std::stack<int> steps;//记录下子步骤，用于悔棋GLfloat rData[360][2];//保存一个圆的顶点信息，画棋子用//判断是否五子连珠bool isWin(int x,int y){int dir[][2]={0,1,1,0,1,1,1,-1};for(int i=0;i<4;++i){int len=1;for(int j=1;chessboard[x][y]==chessboard[x+j*dir[i][0]][y+j*dir[i][1]];++j)++len;for(int j=1;chessboard[x][y]==chessboard[x-j*dir[i][0]][y-j*dir[i][1]];++j)++len;if(len>=5) return 1;}return 0;}//把屏幕坐标转换成棋盘上的坐标void trans(int &x,int &y){y=length-y;x=(int)((x<<4)/(length*1.0)-0.5);y=(int)((y<<4)/(length*1.0)-0.5);}//画棋子(即画一个圆)void drawChess(int x,int y,int color){if(color==1) glColor3f(0,0,0);else glColor3f(1,1,1);glBegin(GL_TRIANGLE_FAN);for(int i=1;i<=360;i++)glVertex2f(rData[i-1][0]+x+1,rData[i-1][1]+y+1);glEnd();}//开始新一局游戏时用来初始化数据void newGame(){while(!steps.empty())steps.pop();isBlack=1;isStart=1;memset(chessboard,0,sizeof(chessboard));}void processMenu(int opt){switch(opt){case 1:newGame();break;case 2:if(steps.empty()) break;int temp=steps.top();steps.pop();chessboard[temp>>4][temp&15]=0;isBlack=!isBlack;break;}glutPostRedisplay();}void init(){glClearColor(0.5,0.5,0.5,0);//保存画圆时的各个顶点for(int i=0;i<360;++i){rData[i][0]=0.37*cos(1.0*i);rData[i][1]=0.37*sin(1.0*i);}glMatrixMode(GL_PROJECTION);glLoadIdentity();glOrtho(0,16,0,16,-1,1);//画棋盘的线static GLint vertices[120];for(int i=0;i<15;++i){int j=i<<2;vertices[j]=i+1;vertices[j+1]=1;vertices[j+2]=i+1;vertices[j+3]=15;vertices[j+60]=1;vertices[j+61]=i+1;vertices[j+62]=15;vertices[j+63]=i+1;}glEnableClientState(GL_VERTEX_ARRAY);glVertexPointer(2,GL_INT,0,vertices);int newGameMenu = glutCreateMenu(processMenu);glutAddMenuEntry("start a new game",1);glutAddMenuEntry("go back",2);glutAttachMenu(GLUT_RIGHT_BUTTON);newGame();}void display(){glClear(GL_COLOR_BUFFER_BIT);glColor3f(1,1,1);//画棋盘glDrawArrays(GL_LINES,0,60);//画棋子for(int i=0;i<15;++i)for(int j=0;j<15;++j)if(chessboard[i][j])drawChess(i,j,chessboard[i][j]);glFlush();}void keyboard(unsigned char key, int x, int y){switch(key){case 27:exit(0);}}void mouse(int button, int state, int x, int y){switch(button){case GLUT_LEFT_BUTTON:if(GLUT_DOWN==state&&1==isStart){trans(x,y);if(chessboard[x][y]) break;chessboard[x][y]=isBlack*2-1;steps.push((x<<4)+y);if(isWin(x,y)){isStart=0;if(isBlack)glClearColor(0.7,0.7,0.7,0);elseglClearColor(0.1,0.1,0.1,0);}isBlack=!isBlack;glutPostRedisplay();}break;case GLUT_RIGHT_BUTTON:newGame();glutPostRedisplay();break;}}void reshape(int x, int y){//为了使棋盘保持正方形，用x,y较小的那个作为视口(棋盘）边长if(x>y) x=y;else y=x;length=x;glViewport(0,0,(GLsizei)x,(GLsizei)y);glMatrixMode(GL_PROJECTION);glLoadIdentity();glOrtho(0,16,0,16,-1,1);}int main(int argc, char **argv){glutInit(&argc,argv);glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);glutInitWindowSize(length,length);glutInitWindowPosition(100,100);glutCreateWindow("Gobang");init();glutDisplayFunc(display);glutKeyboardFunc(keyboard);glutMouseFunc(mouse);glutReshapeFunc(reshape);glutMainLoop();return 0;}