c语言小游戏（贪食蛇）
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <graphics.h>
int SCR[10][15];
typedef struct QNode
{int a,b;
struct QNode *next;
}QNode,*QueuePtr;
typedef struct
{QueuePtr front;
QueuePtr rear;
}LinkQueue;
LinkQueue *Q;
QNode *p;
void InitQueue()
{Q->front=Q->rear=(QueuePtr)malloc(sizeof(QNode));
if(!Q->front) exit(0);
Q->front->next=NULL;
}
void EnQueue(int x,int y)
{p=(QueuePtr)malloc(sizeof(QNode));
if(!p) exit(0);
p->a=x;
p->b=y;
p->next=NULL;
Q->rear->next=p;
Q->rear=p;
}
int DeQueue()
{int e;
while(Q->front!=Q->rear)
{p=Q->front->next;
e=p->a;
Q->front->next=p->next;
if(Q->rear==p) Q->rear=Q->front;
free(p);
return e;
}
if(Q->front==Q->rear) printf("The Queue is empty!\n");
}
main()
{int score=0,i,j,RADx,RADy,key,x=100,y=100,X=100,Y=100,gd=DETECT,gm;
randomize();
InitQueue();
initgraph(&gd,&gm,"");
for(i=0;i<10;i++)
for(j=0;j<15;j++)
SCR[i][j]=0;
rectangle(X-1,Y-1,X+301,Y+201);
setfillstyle(1,GREEN);
bar(x,y,x+18,y+18);
EnQueue(x,y);
SCR[0][0]=1;
settextstyle(0,0,2);
outtextxy(10,10,"WELCOME TO PLAY!");
outtextxy(10,400,"exit->Esc");
outtextxy(450,100,"SCORE:");
do{RADx=random(200)+100;
RADy=random(100)+100;
}while((RADx%20)!=0||(RADy%20)!=0);
bar(RADx,RADy,RADx+18,RADy+18);
for(;;)
{key=getch();
setfillstyle(1,BLACK);
bar(x,y,x+18,y+18);
while(key==77&&Q->rear->a<X+280)
{x=Q->rear->a;
y=Q->rear->b;
x+=20;
setfillstyle(1,GREEN);
bar(x,y,x+18,y+18);
EnQueue(x,y);
if(x!=RADx||y!=RADy)
{x=Q->front->next->a;
y=Q->front->next->b;
setfillstyle(1,BLACK);
bar(x,y,x+18,y+18);
DeQueue();
}
else
{do{RADx=random(200)+100;
RADy=random(100)+100;
}while((RADx%20)!=0||(RADy%20)!=0||SCR[(RADx-100)/20][(RADy-100)/20]==1);
bar(RADx,RADy,RADx+18,RADy+18);
SCR[(RADx-100)/20][(RADy-100)/20]=1;
score+=100;
}
delay(1000000000);
if(kbhit())
{key=getch();
if(key==80||key==72) break;
}
}
while(key==80&&Q->rear->b<Y+180)
{x=Q->rear->a;
y=Q->rear->b;
y+=20;
setfillstyle(1,GREEN);
bar(x,y,x+18,y+18);
EnQueue(x,y);
if(x!=RADx||y!=RADy)
{x=Q->front->next->a;
y=Q->front->next->b;
setfillstyle(1,BLACK);
bar(x,y,x+18,y+18);
DeQueue();
}
else
{do{RADx=random(200)+100;
RADy=random(100)+100;
}while((RADx%20)!=0||(RADy%20)!=0||SCR[(RADx-100)/20][(RADy-100)/20]==1);
bar(RADx,RADy,RADx+18,RADy+18);
SCR[(RADx-100)/20][(RADy-100)/20]=1;
}
delay(1000000000);
if(kbhit())
{key=getch();
if(key==77||key==75) break;
}
}
while(key==75&&Q->rear->a>X)
{x=Q->rear->a;
y=Q->rear->b;
x-=20;
setfillstyle(1,GREEN);
bar(x,y,x+18,y+18);
EnQueue(x,y);
if(x!=RADx||y!=RADy)
{x=Q->front->next->a;
y=Q->front->next->b;
setfillstyle(1,BLACK);
bar(x,y,x+18,y+18);
DeQueue();
}
else
{do{RADx=random(200)+100;
RADy=random(100)+100;
}while((RADx%20)!=0||(RADy%20)!=0||SCR[(RADx-100)/20][(RADy-100)/20]==1);
bar(RADx,RADy,RADx+18,RADy+18);
SCR[(RADx-100)/20][(RADy-100)/20]=1;
}
delay(1000000000);
if(kbhit())
{key=getch();
if(key==80||key==72) break;
}
}
while(key==72&&Q->rear->b>Y)
{x=Q->rear->a;
y=Q->rear->b;
y-=20;
setfillstyle(1,GREEN);
bar(x,y,x+18,y+18);
EnQueue(x,y);
if(x!=RADx||y!=RADy)
{x=Q->front->next->a;
y=Q->front->next->b;
setfillstyle(1,BLACK);
bar(x,y,x+18,y+18);
DeQueue();
}
else
{do{RADx=random(200)+100;
RADy=random(100)+100;
}while((RADx%20)!=0||(RADy%20)!=0||SCR[(RADx-100)/20][(RADy-100)/20]==1);
bar(RADx,RADy,RADx+18,RADy+18);
SCR[(RADx-100)/20][(RADy-100)/20]=1;
}
delay(1000000000);
if(kbhit())
{key=getch();
if(key==77||key==75) break;
}
}
if(key==27) break;
}
closegraph();
}