如何用c语言写一个游戏

请编译前在主目录下建立一个文本文件（xia.txt）内容为：0 0 0 0 0
哈哈
#include<dos.h>
#include<stdio.h>
#include<graphics.h>
#include<math.h>
union REGS regs;
unsigned int zhuan[5];

int Msinit();
void Setmouse(int left,int right,int top,int buttom);
int Msread(int *xp,int *yp,int *bup);
void Draw(int x,int y,int sizex,int sizey);

main()
{int mode=VGAHI,driver=VGA;
unsigned int l;
int i,gi,gj,j,flag=1;/*i,j是循环变量,flag是标记变量,-1:向x负半轴移动,+1:向x正半轴移动*/
double qx,qy,k,b=0.0,speech=0.4,x,y;
double r=2.0,bx=60.0,byy=270.0;
double pianx=100.0,piany=100.0,tx=20.0,ty=10.0,jx=2.0,jy=2.0;
int mx=0,my=0,mb,sum;/*sum纪录砖块的数目*/
FILE * p;
if((p = fopen("xia.txt", "r")) == NULL)
{printf("The file cannot open!\n");
exit(1);}
initgraph(&driver,&mode,"\\tc\\BGI");
Msinit();
Setmouse((int)(pianx+1+bx/2),(int)((tx+jx)*8+pianx-1-bx/2),(int)byy+piany,(int)byy+piany);

star:cleardevice();/*程序重载的介入点*/
sum=0;
qx=100.0+pianx-10;qy=180.0+pianx-10;k=0.33;
setcolor(7);
rectangle((int)(pianx-2),(int)(piany-2),(int)((tx+jx)*8+2+pianx),302+piany);
setcolor(1);
rectangle((int)(pianx-1),(int)(piany-1),(int)((tx+jx)*8+1+pianx),301+piany);
/*读取盘面情况*/
for(i=0;i<5;i++)
fscanf(p,"%x ",&zhuan[i]);
/*画砖块*/
for(i=0;i<5;i++)
{l=1;
for(j=0;j<16;j++)
{if((zhuan[i]&l)==0)
{Draw((int)((jx+tx)*((16*i+j)%8)+pianx+jx),(int)((jy+ty)*((int)((16*i+j)/8))+piany+jy),

(int)tx,(int)ty);
sum+=1;
}
l=l*2;
}
}

for(;;)
{ setfillstyle(1, 0);
bar(mx-bx/2,my,mx+bx/2,my+5);
Msread(&mx, &my, &mb);

Draw(mx-bx/2,my,bx,5);
setcolor(0);
circle(qx,qy,r);
/*判断求是否反弹*/
if(qx-r<=pianx+1 || qx+r>=(tx+jx)*8+pianx-1) {flag=-flag;k=-k;}
if(qy-r<=piany+1) k=-k;

for(gi=0;gi<5;gi++)
{l=1;
for(gj=0;gj<16;gj++)
{
if((zhuan[gi]&l)==0)
{j=(16*gi+gj)/8;
i=(16*gi+gj)%8;
x=(jx+tx)*i+jx+tx/2+pianx;
y=(jy+ty)*j+jy+ty/2+piany;
/*边判断1*/
if(qy>=y-ty/2 && qy<=y+ty/2 &&(pow(qx+r-x+tx/2,2)<1 || pow(qx-r-x-tx/2,2)<1))
{flag=-flag;k=-k;
zhuan[gi]=zhuan[gi]|l;
sum-=1;
if(sum==0) {printf("Win!\n");getch();goto star;}
setfillstyle(1, 0);
bar((jx+tx)*i+pianx+jx,(jy+ty)*j+piany+jy,(jx+tx)*i+pianx+jx+tx,(jy+ty)

*j+piany+jy+ty);
}
else
/*边判断2*/
if(qx>
;=x-tx/2 && qx<=x+tx/2 &&(pow(qy+r-y+ty/2,2)<1 || pow(qy-r-y-ty/2,2)<1))
{k=-k;
zhuan[gi]=zhuan[gi]|l;
sum-=1;
if(sum==0) {printf("Win!\n");getch();goto star;}
setfillstyle(1, 0);
bar((jx+tx)*i+pianx+jx,(jy+ty)*j+piany+jy,(jx+tx)*i+pianx+jx+tx,(jy+ty)

*j+piany+jy+ty);
}
else
/*角判断*/
if(pow(qx-x+tx/2,2)+pow(qy-y+ty/2,2)<=r*r || pow(qx-x-tx/2,2)+pow(qy-y+ty/2,2)<=r*r ||

pow(qx-x+tx/2,2)+pow(qy-y-ty/2,2)<=r*r || pow(qx-x-tx/2,2)+pow(qy-y-ty/2,2)<=r*r)
{flag=-flag;
zhuan[gi]=zhuan[gi]|l;
sum-=1;
if(sum==0) {printf("Win!\n");getch();goto star;}
setfillstyle(1, 0);
bar((jx+tx)*i+pianx+jx,(jy+ty)*j+piany+jy,(jx+tx)*i+pianx+jx+tx,(jy+ty)

*j+piany+jy+ty);
}
}l=l*2;}}
/*棍棒的反弹*/
if(qx<=mx+bx/2 && qx>=mx-bx/2 && pow(qy+r-my,2)<1) {k=-(k/pow(k*k,0.5))*(0.3*bx/(pow(pow

(qx-mx,2),0.5)+0.000001));}
if((int)(qy+r)>my+0.5) {printf("DEAD!");Setmouse(0,0,640,480);getch();exit(1);}
b=qy-qx*k;
if(flag==1) qx=qx+speech/pow(1.0+k*k,0.5);
if(flag==-1) qx=qx-speech/pow(1.0+k*k,0.5);
qy=qx*k+b;/*计算球心坐标*/
setcolor(14);
circle((int)qx,(int)qy,r);
delay(1);
if(mb==1) {Setmouse(0,0,640,480);exit(1);}
}
}

/*这个函数用于实现鼠标的初始化*/
int Msinit()
{int recored;
regs.x.ax=0;
int86 (0x33, & regs, & regs);
recored=regs.x.ax;
if(recored==0)
{printf("Mouse not foundd or Mouse driver not installed.\n");
return 0;
}
else
return recored;
}

/*下面的函数用于实现设置鼠标的移动范围*/
void Setmouse(int left,int right,int top,int buttom)
{
regs.x.ax=7;
regs.x.cx=left;
regs.x.dx=right;
int86(0x33,& regs,& regs);
regs.x.ax=8;
regs.x.cx=top;
regs.x.dx=buttom;
int86(0x33,& regs,& regs);
}

/*下面这个函数用于实现鼠标的读取*/
int Msread(int *xp,int *yp,int *bup)
{int xnew,ynew,ch;
if(kbhit()) return getch();
regs.x.ax=3;
int86(0x33,& regs,& regs);
xnew=regs.x.cx;
ynew=regs.x.dx;
*bup=regs.x.bx;
*xp=xnew;
*yp=ynew;
return -1;
}

/*下面这个子程序是完成描绘一个按钮*/
void Draw(int x,int y,int sizex,int sizey)/* x, y为左上角坐标sizex,sizey为长和宽*/
{int sizx=sizex-1;
int sizy=sizey-1;
setcolor(15);/*这里最好用白色*/
line(x,y,x+sizx-1,y);
line(x,y+1,x+sizx-2,y+1);
line(x,y,x,y+sizy-1);
line(x+1,y,x+1,y+sizy-2);
setcolor(8);/*这里最好用深灰色*/
line(x+1,y+sizy,x+sizx,y+sizy);
line(x+2,y+sizy-1,x+sizx,y+sizy-1);
line(x+sizx-1,y+1,x+sizx-1,y+sizy);
line(x+sizx,y+2,x+sizx,y+sizy);
setcolor(7);/*这里最好用灰色*/
putpixel(x,y+sizy,3);
putpixel(x+1,y+sizy-1,3);
putpixel(x+sizx,y,3);
putpixel(x+sizx-1,y+1,3);
setfillstyle(1, 7);/*这里最好用灰色,设置填充模式*/
bar(x+2,y+2,x+sizx-2,y+sizy-2);
}
参考资料：http://www.qqgb.com/Program/Clanguage/Cgame/Program_54283.html

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