在VC6.0平臺上，通過C語言和EasyX圖形庫編寫的貪喫蛇小遊戲，爲了使用圖形庫函數，建立的文件是.cpp文件，使用的是C語言編寫，遊戲具有背景音樂，代碼長度500行左右，代碼和算法，都是我自己源生的，分享給有興趣的朋友看看。
源代碼：
#include<stdio.h>
#include<graphics.h>
#include<time.h>
#include<conio.h>
#include<easyx.h>
#define MAXLEN 30
#define MAXFOD 6
#define eror 1
#define ok 0
#pragma comment ( lib, "Winmm.lib" )
enum direction
{
left,up,right,down
};
int pos[MAXLEN][2];
int food[MAXFOD][2];
int LENFOD=0;
int LENGTH=0;
int MARK=0;
int HIGHESTM=0;
direction DIT;
int snake();
int drawLine();
int init();
int controlfood();
int saveMark();
boolean isdead();
boolean iswin();
int countmark();
void main()
{
int i=0,count=1;
srand((unsigned)time(0));
initgraph(600,900);
setcolor(YELLOW);
setfont( 30, 0,"楷體");
mciSendString( "open ./source/skycity.mp3 alias skycity", 0, 0, 0 );
mciSendString( "play skycity repeat ", 0, 0, 0 );
start:
cleardevice();
init();
/*for(i=0;i<LENGTH;i++)
printf("\n%d %d",pos[i][0],pos[i][1]);
printf("\n");
pos[0][1] -= 1;
for(i=LENGTH-1;i>0;i--)
{
pos[i][0]=pos[i-1][0];
pos[i][1]=pos[i-1][1];
}
closegraph();
for(i=0;i<LENGTH;i++)
printf("\n%d %d",pos[i][0],pos[i][1]);
Sleep(50000);*/
BeginBatchDraw();
drawLine();
snake();
FlushBatchDraw();
while(true)
{
if(kbhit())
{
switch(getch())
{
case 27:
saveMark();
closegraph();
exit(ok);
break;
case 72:
case 'w':
case 'W':
if(DIT!=down)
{
DIT=up;
for(i=LENGTH-1;i>0;i--)
{
pos[i][0]=pos[i-1][0];
pos[i][1]=pos[i-1][1];
}
pos[0][1] -= 1;
}
break;
case 80:
case 's':
case 'S':
if(DIT!=up)
{
DIT=down;
for(i=LENGTH-1;i>0;i--)
{
pos[i][0]=pos[i-1][0];
pos[i][1]=pos[i-1][1];
}
pos[0][1] += 1;
}
break;
case 75:
case 'a':
case 'A':
if(DIT!=right)
{
DIT=left;
for(i=LENGTH-1;i>0;i--)
{
pos[i][0]=pos[i-1][0];
pos[i][1]=pos[i-1][1];
}
pos[0][0] -= 1;
}
break;
case 77:
case 'd':
case 'D':
if(DIT!=left)
{
DIT=right;
for(i=LENGTH-1;i>0;i--)
{
pos[i][0]=pos[i-1][0];
pos[i][1]=pos[i-1][1];
}
pos[0][0] += 1;
}
break;
}
cleardevice();
controlfood();
drawLine();
countmark();
snake();
count=1;
FlushBatchDraw();
}
if(LENGTH<10)
{
if(count==20)
{
count=0;
}
}
else if(LENGTH<15&&LENGTH>9)
{
if(count==15)
count=0;
}
else if(LENGTH<20&&LENGTH>14)
{
if(count==10)
count=0;
}
else
{
if(count==5)
count=0;
}
if(count==0)
{
for(i=LENGTH-1;i>0;i--)
{
pos[i][0]=pos[i-1][0];
pos[i][1]=pos[i-1][1];
}
switch(DIT)
{
case up:
pos[0][1] -= 1;
break;
case down:
pos[0][1] += 1;
break;
case left:
pos[0][0] -= 1;
break;
case right:
pos[0][0] += 1;
break;
}
cleardevice();
controlfood();
drawLine();
countmark();
snake();
FlushBatchDraw(
);
}
if(isdead())
{
mciSendString( "play Lose ", 0, 0, 0 );
outtextxy(240,275,"LOSSING!");
FlushBatchDraw();
while(true)
{
if(kbhit())
{
switch(getch())
{
case 13:
mciSendString( "close Lose ", 0, 0, 0 );
mciSendString( "close win ", 0, 0, 0 );
goto start;
case 27:
mciSendString( "close skycity ", 0, 0, 0 );
closegraph();
exit(ok);
}
}
}
}
if(iswin())
{
mciSendString( "play win ", 0, 0, 0 );
outtextxy(240,275,"WINNING!");
FlushBatchDraw();
while(true)
{
if(kbhit())
{
switch(getch())
{
case 13:
mciSendString( "close Lose ", 0, 0, 0 );
mciSendString( "close win ", 0, 0, 0 );
goto start;
case 27:
mciSendString( "close skycity ", 0, 0, 0 );
closegraph();
exit(ok);
}
}
}
}
count++;
Sleep(20);
}
}
int snake()
{
int i=0,j=0;
setfillcolor(YELLOW);
for(i=0;i<LENGTH;i++)
solidcircle(pos[i][0]*20+10,pos[i][1]*20+10,10);
setfillcolor(RED);
i=0;
if(DIT==left)
{
solidcircle(pos[i][0]*20+5,pos[i][1]*20+5,3);
solidcircle(pos[i][0]*20+5,pos[i][1]*20+15,3);
}
else if(DIT==right)
{
solidcircle(pos[i][0]*20+15,pos[i][1]*20+5,3);
solidcircle(pos[i][0]*20+15,pos[i][1]*20+15,3);
}
else if(DIT==down)
{
solidcircle(pos[i][0]*20+5,pos[i][1]*20+15,3);
solidcircle(pos[i][0]*20+15,pos[i][1]*20+15,3);
}
else
{
solidcircle(pos[i][0]*20+5,pos[i][1]*20+5,3);
solidcircle(pos[i][0]*20+15,pos[i][1]*20+5,3);
}
setfillcolor(GREEN);
//setfont( 18, 0,"楷體");
for(i=0;i<LENFOD;i++)
{
solidcircle(food[i][0]*20+10,food[i][1]*20+10,7);
/*j=rand()%2;
if(j==0)
{
outtextxy(food[i][0]*20+1,food[i][1]*20+1,"");
}
else if(j==1)
{
outtextxy(food[i][0]*20+1,food[i][1]*20+1,"");
}
else
{
outtextxy(food[i][0]*20+1,food[i][1]*20+1,"");
}*/
}
//setfont( 30, 0,"楷體");
//solidcircle(food[i][0]*20+10,food[i][1]*20+10,7);
setfillcolor(GREEN);
return ok;
}
int drawLine()
{
int i;
for(i=20;i<600;i+=20)
{
line(0,i,600,i);
line(i,0,i,600);
}
line(0,i,600,i);
line(0,i+5,600,i+5);
return ok;
}
int init()
{
int i,j,k,l;
FILE * fp;
mciSendString( "open ./source/Lose.mp3 alias Lose", 0, 0, 0 );
mciSendString( "open ./source/win.mp3 alias win", 0, 0, 0 );
LENGTH=0;
LENFOD=0;
MARK=0;
if((fp=fopen("highestscore.txt","r"))==NULL)
{
printf("File open eror!\n");
exit(eror);
}
else
{
fscanf(fp,"%d",&HIGHESTM);
if(fclose(fp))
{
printf("file close eror\n");
exit(eror);
}
}
setlinecolor(GREEN);
setfillcolor(YELLOW);
i=rand()%10+10;
j=rand()%10+10;
k=rand()%4;
pos[0][0] = i;
pos[0][1] = j;
if(k==0)
{
for(i=1;i<5;i++)
{
pos[i][1]=pos[i-1][1]+1;
pos[i][0]=pos[i-1][0];
DIT=up;
}
}
else if(k==1)
{
for(i=1;i<5;i++)
{
pos[i][0]=pos[i-1][0]-1;
pos[i][1]=pos[i-1][1];
DIT=right;
}
}
else if(k==2)
{
for(i=1;i<5;i++)
{
pos[i][1]=pos[i-1][1]-1;
pos[i][0]=pos[i-1][0];
DIT=down;
}
}
else
{
for(i=1;i<5;i++)
{
pos[i][0]=pos[i-1][0]+1;
pos[i][1]=pos[i-1][1];
DIT=left;
}
}
LENGTH=5;
k=rand()%4+1;
for(l=0;l<k;l++)
{
i=rand()%30;
j=rand()%30;
food[LENFOD][0]=i;
food[LENFOD++][1]=j;
for(int m=0;m<LENGTH;m++)
if(i==pos[m][0]&&j==pos[m][1])
{
l--;
LENFOD--;
break;
}
}
return ok;
}
int controlfood()
{
int i=0,j,k,l;
for(i=0;i<LENFOD;i++)
{
if(pos[0][0]==food[i][0]&&pos[0][1]==food[i][1])
{
if(LENGTH<10)
{
MARK+=5;
}
else if(LENGTH<15)
{
MARK+=10;
}
else if(LENGTH<20)
{
MARK+=15;
}
else if(LENGTH<25)
{
MARK+=20;
}
else
{
MARK+=25;
}
break;
}
}
if(i<LENFOD)
{
for(j=i;j<LENFOD-1;j++)
{
food[j][0]=food[j+1][0];
food[j][1]=food[j+1][1];
}
LENFOD--;
LENGTH++;
pos[LENGTH-1][0]=pos[LENGTH-2][0]*2-pos[LENGTH-3][0];
pos[LENGTH-1][1]=pos[LENGTH-2][1]*2-pos[LENGTH-3][1];
}
if(LENFOD<2)
{
k=rand()%4+1;
for(l=0;l<k;l++)
{
i=rand()%30;
j=rand()%30;
food[LENFOD][0]=i;
food[LENFOD++][1]=j;
for(int m=0;m<LENGTH;m++)
if(i==pos[m][0]&&j==pos[m][1])
{
l--;
LENFOD--;
break;
}
}
}
return ok;
}
boolean isdead()
{
int i;
if(pos[0][0]<0||pos[0][0]>30||pos[0][1]<0||pos[0][1]>30)
{
saveMark();
return true;
}
for(i=3;i<LENGTH;i++)
if(pos[0][0]==pos[i][0]&&pos[0][1]==pos[i][1])
return true;
return false;
}
boolean iswin()
{
if(LENGTH==MAXLEN&&!isdead())
{
saveMark();
return true;
}
else
return false;
}
int countmark()
{
char num[10];
sprintf(num, "%d", HIGHESTM);
outtextxy(60,610,"Highest:");
outtextxy(200,610,num);
outtextxy(350,610,"YouScore:");
sprintf(num, "%d", MARK);
outtextxy(490,610,num);
return ok;
}
int saveMark()
{
FILE * fp;
if(MARK>HIGHESTM)
{
if((fp=fopen("highestscore.txt","w"))==NULL)
{
printf("File open eror!\n");
exit(eror);
}
else
{
fprintf(fp,"%d",MARK);
if(fclose(fp))
{
printf("file close eror\n");
exit(eror);
}
}
}
return ok;
}