这篇文章主要介绍了C语言如何实现弹跳小球动画的相关知识，内容详细易懂，操作简单快捷，具有一定借鉴价值，相信大家阅读完这篇C语言如何实现弹跳小球动画文章都会有所收获，下面我们一起来看看吧。
一、项目描述和最终成果展示
项目描述: 一个球来回的跳动
效果图如下:
二、实现一个移动的球
代码如下:
#include<graphics.h>#include<conio.h>int main(void){ int x; initgraph(640,480); for(x=100;x<540;x=x+20) { setcolor(YELLOW);//绘制黄线，绿色填充的圆 setfillcolor(GREEN); fillcircle(x,100,20); Sleep(320);//延时 cleardevice(); } closegraph(); return 0;}三、弹跳一个小球
代码如下:
#include<graphics.h>#include<conio.h>#define High 480 //游戏画布尺寸#define Width 640int main(void){ float ball_x,ball_y;//小球的坐标 float ball_vx,ball_vy;//小球的速度 float radius;//小球的半径 initgraph(Width,High); ball_x=Width/2; ball_y=High/2; ball_vx=1; ball_vy=1; radius=20; while(1) { setcolor(BLACK);//绘制黑色，黑色填充的圆 //不用清屏函数的好处：不会闪屏 setfillcolor(BLACK); fillcircle(ball_x,ball_y,radius); //更新圆的坐标 ball_x=ball_x+ball_vx; ball_y=ball_y+ball_vy; if( (ball_x<=radius) || (ball_x>=Width-radius) ) ball_vx=-ball_vx; if( (ball_y<=radius) || (ball_y>=High-radius) ) ball_vy=-ball_vy; //绘制黄线,绿色填充的圆 setcolor(YELLOW); setfillcolor(GREEN); fillcircle(ball_x,ball_y,radius); Sleep(3); } closegraph(); return 0;}效果图如下:
四、弹跳一个小球(改进版)
代码如下:
#include<graphics.h>#include<conio.h>#define High 480 //游戏画布尺寸#define Width 640int main(void){ float ball_x,ball_y;//小球的坐标 float ball_vx,ball_vy;//小球的速度 float radius;//小球的半径 initgraph(Width,High); ball_x=Width/2; ball_y=High/2; ball_vx=1; ball_vy=1; radius=20; BeginBatchDraw(); while(1) { setcolor(BLACK);//绘制黑色，黑色填充的圆 //不用清屏函数的好处：不会闪屏 setfillcolor(BLACK); fillcircle(ball_x,ball_y,radius); //更新圆的坐标 ball_x=ball_x+ball_vx; ball_y=ball_y+ball_vy; if( (ball_x<=radius) || (ball_x>=Width-radius) ) ball_vx=-ball_vx; if( (ball_y<=radius) || (ball_y>=High-radius) ) ball_vy=-ball_vy; //绘制黄线,绿色填充的圆 setcolor(YELLOW); setfillcolor(GREEN); fillcircle(ball_x,ball_y,radius); FlushBatchDraw(); Sleep(3); } EndBatchDraw(); closegraph(); return 0;}效果图如下:
五、多个球碰撞
代码如下:
#include<graphics.h>#include<conio.h>#define High 480 //游戏画布尺寸#define Width 640#define BallNum 5 //小球的个数int main(void){ float ball_x[BallNum],ball_y[BallNum];//小球的坐标 float ball_vx[BallNum],ball_vy[BallNum];//小球的速度 float radius=20;//小球的半径 int i; for(i=0;i<BallNum;i++) { ball_x[i]=(i+2)*radius*3; ball_y[i]=High/2; ball_vx[i]=1; ball_vy[i]=1; } initgraph(Width,High); BeginBatchDraw(); while(1) { setcolor(BLACK);//绘制黑色，黑色填充的圆 //不用清屏函数的好处：不会闪屏 setfillcolor(BLACK); for(i=0;i<BallNum;i++) { fillcircle(ball_x[i],ball_y[i],radius); } //更新圆的坐标 for(i=0;i<BallNum;i++) { ball_x[i]=ball_x[i]+ball_vx[i]; ball_y[i]=ball_y[i]+ball_vy[i]; } //判断是否和墙壁碰撞 for(i=0;i<BallNum;i++) { if( (ball_x[i]<=radius) || (ball_x[i]>=Width-radius) ) ball_vx[i]=-ball_vx[i]; if( (ball_y[i]<=radius) || (ball_y[i]>=High-radius) ) ball_vy[i]=-ball_vy[i]; } //绘制黄线,绿色填充的圆 setcolor(YELLOW); setfillcolor(GREEN); for(i=0;i<BallNum;i++) { fillcircle(ball_x[i],ball_y[i],radius); } FlushBatchDraw(); Sleep(3); } EndBatchDraw(); closegraph(); return 0;}效果图如下:
六、多个球碰撞(升级版)
增加了球与球之间的碰撞
代码如下:
#include<graphics.h>#include<conio.h>#include<math.h>#define High 480 //游戏画面大小#define Width 640#define BallNum 15//小球的个数int main(void){ float ball_x[BallNum],ball_y[BallNum];//小球的坐标 float ball_vx[BallNum],ball_vy[BallNum];//小球的速度 float radius;//小球的半径 int i,j; radius=20; for(i=0;i<BallNum;i++)//数据的初始化 { ball_x[i]=rand()%int(Width-4*radius)+2*radius; ball_y[i]=rand()%int(High-4*radius)+2*radius; ball_vx[i]=(rand()%2)*2-1; ball_vy[i]=(rand()%2)*2-1; } initgraph(Width,High); BeginBatchDraw(); while(1) { setcolor(BLACK);//绘制黑色，黑色填充的圆 //不用清屏函数的好处：不会闪屏 setfillcolor(BLACK); for(i=0;i<BallNum;i++) { fillcircle(ball_x[i],ball_y[i],radius); } //更新小球的坐标 for(i=0;i<BallNum;i++) { ball_x[i]=ball_x[i]+ball_vx[i]; ball_y[i]=ball_y[i]+ball_vx[i]; //把超出边界的小球拉回来 if(ball_x[i]<radius) ball_x[i]=radius; if(ball_y[i]<radius) ball_y[i]=radius; if(ball_x[i]>Width-radius) ball_x[i]=Width-radius; if(ball_y[i]>High-radius) ball_y[i]=High-radius; } //判断是否和墙壁碰撞 for(i=0;i<BallNum;i++) { if( (ball_x[i]<=radius) || (ball_x[i]>=Width-radius) ) ball_vx[i]=-ball_vx[i]; if( (ball_y[i]<=radius) || (ball_y[i]>=High-radius) ) ball_vy[i]=-ball_vy[i]; } float minDistances2[BallNum][2]; //记录某个小球和与它最近小球的距离，以及这个小球的坐标 for(i=0;i<BallNum;i++) { minDistances2[i][0]=999999; minDistances2[i][1]=-1; } //求所有小球两两之间的距离的平方 for(i=0;i<BallNum;i++) { for(j=0;j<BallNum;j++) { if(i!=j)//和自己不比 { float dist2; dist2=(ball_x[i]-ball_x[j])*(ball_x[i]-ball_x[j]) +(ball_y[i]-ball_y[j])*(ball_y[i]-ball_y[j]); if(dist2<minDistances2[i][0]) { minDistances2[i][0]=dist2; minDistances2[i][1]=j; } } } } //判断小球之间是否碰撞 for(i=0;i<BallNum;i++) { if(minDistances2[i][0]<=4*radius*radius) //若最小距离小于阈值，发生碰撞 { j=minDistances2[i][1]; //交换速度 int temp; temp=ball_vx[i];ball_vx[i]=ball_vx[j];ball_vx[j]=temp; temp=ball_vy[i];ball_vy[i]=ball_vy[j];ball_vy[j]=temp; minDistances2[j][0]=9999999;//避免交换两次速度，又回去了 minDistances2[j][1]=-1; } } //绘制黄线,绿色填充的圆 setcolor(YELLOW); setfillcolor(GREEN); for(i=0;i<BallNum;i++) { fillcircle(ball_x[i],ball_y[i],radius); } FlushBatchDraw(); Sleep(3); } EndBatchDraw(); closegraph(); return 0;}效果图如下:
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