c++台球程序（结课大作业），采用easyx和面向对象编写，有简单的图形界面

#include<easyx.h> #include <conio.h> #include <graphics.h> #include <math.h> #include "ball.h" //重载acos float acos(const float cost,const float y) { if(y>0)return acos(cost); if(y<0)return 2*pi-acos(cost); if(y==0&&cost>=0)return 0; if(y==0&&cost<0)return pi; } //重载atan float atan(const float y,const float x) { if(x>0&&y>=0)return atan(y/x); if(x>0&&y<0)return 2*pi+atan(y/x); if(x==0&&y==0)return 0; if(x==0&&y>0)return pi/2; if(x==0&&y<0)return 3*pi/2; if(x<0)return pi+atan(y/x); } //ball类成员实现*********************************************************************************** //构造函数 ball::ball(float xput=200,float yput=200,COLORREF colorset=RGB(255,255,255)) { x=xput; y=yput; v=0; r=15; t=0; color=colorset; acc=0.0006; check=false; } //重设变量 void ball::setagain(float v0,float t0) { v=v0; t=t0; } //画小球 void ball::draw() { setlinecolor(color); setfillcolor(color); fillcircle(x,y,r); } //小球移动并判断边界 void ball::move(float l,float w) { if((fabs(x-r)<50&&fabs(y-r)<50)|| //check判断是否进洞 (fabs(x-r)<50&&y+r+50>w)|| (x+r+50>l&&fabs(y-r)<50)|| (x+r+50>l&&y+r+50>w)) { v=0; check=true; } if(fabs(x-l/2)<20&&fabs(y-r)<50) { v=0; check=true; } if(fabs(x-l/2)<20&&y+r+50>w) { v=0; check=true; } x=x+v*cos(t); //和桌边相撞 y=y+v*sin(t); if(x+r+40>l||x-r<40)t=pi-t; if(y+r+40>w||y-r<40)t=-t; v=v-acc; if(v<0)v=0; } //ballarm类成员实现*********************************************************************************** //构造函数 ballarm::ballarm() { mouse1=GetMouseMsg(); pointx2=mouse1.x; pointy2=mouse1.y; } //重设参数 void ballarm::reset(ball &ball10) { mouse1=GetMouseMsg(); pointx1=ball10.getx(); pointy1=ball10.gety(); pointx2=mouse1.x; pointy2=mouse1.y; } //获得鼠标信息并计算力的大小 bool ballarm::hit(ball &ball10) { for(int k=0;;k++) { mouse1=GetMouseMsg(); pointx1=ball10.getx(); pointy1=ball10.gety(); pointx2=mouse1.x; pointy2=mouse1.y; if(mouse1.uMsg==WM_LBUTTONDOWN) { vset=sqrt((pointx2-pointx1)*(pointx2-pointx1)+(pointy2-pointy1)*(pointy2-pointy1))/400; tset=atan(pointy2-pointy1,pointx2-pointx1); return true; } else return false; } } //画杆 void ballarm::draw() { setlinecolor(WHITE); setlinestyle(PS_DASH); line(pointx1,pointy1,pointx2,pointy2); } //background类成员实现*********************************************************************************** //画背景 void background::drawbackground() { putimage(0,0,&img); } //开始界面 int background::initial() { putimage(0,0,&img2); MOUSEMSG m; while(true) { m=GetMouseMsg(); if(m.uMsg==WM_LBUTTONDOWN)return 1; } } //show函数实现****************************************************************************************** void show(ball *balls,ballarm &arm,background &back1) { float distance=30; //小球恰好相碰时间距 float dis[11][2]; //数组存放距离和小球的标号 int k1,k2; while(1) { BeginBatchDraw(); //开始画图 cleardevice(); back1.drawbackground(); for(int i1=0;i1<11;i1++) { //小球开始运动 balls[i1].move(back1.Getl(),back1.Getw()); } for(int i=0;i<11;i++) { dis[i][0]=10000; dis[i][1]=-1; } //记录最近的小球的标号和距离 for(k1=0;k1<11;k1++) for(k2=0;k2<11;k2++) { if(k1!=k2) { float dist; dist=(balls[k2].getx()-balls[k1].getx())*(balls[k2].getx()-balls[k1].getx())+(balls[k2].gety()-balls[k1].gety())*(balls[k2].gety()-balls[k1].gety()); if(dist<dis[k1][0]) { dis[k1][0]=dist; dis[k1][1]=k2; } } } //和最近的小球碰撞 for(k1=0;k1<11;k1++) { if(dis[k1][0]<distance*distance) { /*设球k1，球k2，以球k1为原点，k1k2方向建立平面直角坐标系， k1k2方向交换速度，法向速度不变*/ k2=dis[k1][1]; if(balls[k1].numcheck()==false&&balls[k2].numcheck()==false) { float a=acos((balls[k2].getx()-balls[k1].getx())/distance,balls[k2].gety()-balls[k1].gety()); float a_t1=balls[k1].gett()-a; float a_t2=balls[k2].gett()-a; float a_vx1=balls[k1].getv()*cos(a_t1); float a_vx2=balls[k2].getv()*cos(a_t2); float a_vy1=balls[k1].getv()*sin(a_t1); float a_vy2=balls[k2].getv()*sin(a_t2); setfillcolor(BLACK); fillcircle(balls[k2].getx(),balls[k2].gety(),15); float ballsk1_v=sqrt(a_vx2*a_vx2+a_vy1*a_vy1); //碰撞之后坐标系转回原坐标系 float ballsk2_v=sqrt(a_vx1*a_vx1+a_vy2*a_vy2); float ballsk1_t=atan(a_vy1,a_vx2)+a; float ballsk2_t=atan(a_vy2,a_vx1)+a; float ballsk2_x=balls[k1].getx()+(distance)*cos(a); float ballsk2_y=balls[k1].gety()+(distance)*sin(a); balls[k1].setagain(ballsk1_v,ballsk1_t); balls[k2].setagain(ballsk2_v,ballsk2_t); balls[k2].setxy(ballsk2_x,ballsk2_y); dis[k2][0]=10000; //重设数组避免二次交换速度 dis[k2][1]=-1; balls[k2].draw(); } } } bool checkmove=true; for(int j=0;j<11;j++) //小球全停止才能实施打击 if(balls[j].getv()!=0) { checkmove=false; break; } if(checkmove==true) { if(arm.hit(balls[10])==true) { balls[10].setagain(arm.getvset(),arm.gettset()); } arm.draw(); } int numcal=0; //小球个数清零 for(i=0;i<11;i++) { if(balls[i].numcheck()==false) //画没有进洞的小球 { numcal++; balls[i].draw(); } } if(balls[10].numcheck()==false)numcal--; char s[5]; //输出得分 settextstyle(25,0,_T("黑体")); outtext("Your Score: "); sprintf(s, "%d", 10-numcal); outtext(s); if(balls[10].numcheck()==true) //检测输赢 { RECT r = {0, 0, 1000, 500}; drawtext(_T("You Lose"), &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE); } if(numcal==0&&balls[10].numcheck()==false) { RECT r = {0, 0, 1000, 500}; drawtext(_T("You Win"), &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE); } FlushBatchDraw(); EndBatchDraw(); } }