#include<stdio.h>

#include<time.h>

#include<windows.h>

#include<stdlib.h>

 

#define U 1

#define D 2

#define L 3

#define R 4       //蛇的状态,U:上 ;D:下;L:左 R:右

 

typedef struct SNAKE //蛇身的一个节点

{

    int x;

    int y;

    struct SNAKE *next;

}snake;

 

//全局变量//

int score=0,add=10;//总得分与每次吃食物得分。

int status,sleeptime=200;//每次运行的时间间隔

snake *head, *food;//蛇头指针,食物指针

snake *q;//遍历蛇的时候用到的指针

int endgamestatus=0; //游戏结束的情况,1:撞到墙;2:咬到自己;3:主动退出游戏。

 

//声明全部函数//

void Pos();

void creatMap();

void initsnake();

int biteself();

void createfood();

void cantcrosswall();

void snakemove();

void pause();

void gamecircle();

void welcometogame();

void endgame();

void gamestart();

 

void Pos(int x,int y)//设置光标位置

{

    COORD pos;

HANDLE hOutput;

    pos.X=x;

    pos.Y=y;

    hOutput=GetStdHandle(STD_OUTPUT_HANDLE);

    SetConsoleCursorPosition(hOutput,pos);

}

 

void creatMap()//创建地图

{

    int i;

    for(i=0;i<58;i+=2)//打印上下边框

    {

        Pos(i,0);

        printf("■");

        Pos(i,26);

        printf("■");

    }

    for(i=1;i<26;i++)//打印左右边框

    {

        Pos(0,i);

        printf("■");                        

        Pos(56,i);

        printf("■");        

    }

}

 

void initsnake()//初始化蛇身

{

    snake *tail;

    int i;

    tail=(snake*)malloc(sizeof(snake));//从蛇尾开始,头插法,以x,y设定开始的位置//

    tail->x=24;

    tail->y=5;

    tail->next=NULL;

    for(i=1;i<=4;i++)

    {

        head=(snake*)malloc(sizeof(snake));

        head->next=tail;

        head->x=24+2*i;

        head->y=5;

        tail=head;

    }

    while(tail!=NULL)//从头到为,输出蛇身

    {

        Pos(tail->x,tail->y);

        printf("■");

        tail=tail->next;

    }

}

 

int biteself()//判断是否咬到了自己

{

    snake *self;

    self=head->next;

    while(self!=NULL)

    {

        if(self->x==head->x && self->y==head->y)

        {

            return 1;

        }

        self=self->next;

    }

    return 0;

}

 

void createfood()//随机出现食物

{

    snake *food_1;

    srand((unsigned)time(NULL));

    food_1=(snake*)malloc(sizeof(snake));

    while((food_1->x%2)!=0)    //保证其为偶数,使得食物能与蛇头对其

    {

        food_1->x=rand()%52+2;

    }

    food_1->y=rand()%24+1;

    q=head;

    while(q->next==NULL)

    {

        if(q->x==food_1->x && q->y==food_1->y) //判断蛇身是否与食物重合

        {

            free(food_1);

            createfood();

        }

        q=q->next;

    }

    Pos(food_1->x,food_1->y);

    food=food_1;

    printf("■");

}

 

void cantcrosswall()//不能穿墙

{  

    if(head->x==0 || head->x==56 ||head->y==0 || head->y==26)

    {

        endgamestatus=1;

        endgame();

    }

}

 

void snakemove()//蛇前进,上U,下D,左L,右R

{

snake * nexthead;

    cantcrosswall();

    

    nexthead=(snake*)malloc(sizeof(snake));

    if(status==U)

    {

        nexthead->x=head->x;

        nexthead->y=head->y-1;

        if(nexthead->x==food->x && nexthead->y==food->y)//如果下一个有食物//

        {

            nexthead->next=head;

            head=nexthead;

            q=head;

            while(q!=NULL)

            {

                Pos(q->x,q->y);

                printf("■");

                q=q->next;

            }

            score=score+add;

            createfood();

        }

        else                                               //如果没有食物//

        {

            nexthead->next=head;

            head=nexthead;

            q=head;

            while(q->next->next!=NULL)

            {

                Pos(q->x,q->y);

                printf("■");

                q=q->next;        

            }

            Pos(q->next->x,q->next->y);

            printf("  ");

            free(q->next);

            q->next=NULL;

        }

    }

    if(status==D)

    {

        nexthead->x=head->x;

        nexthead->y=head->y+1;

        if(nexthead->x==food->x && nexthead->y==food->y)  //有食物

        {

            nexthead->next=head;

            head=nexthead;

            q=head;

            while(q!=NULL)

            {

                Pos(q->x,q->y);

                printf("■");

                q=q->next;

            }

            score=score+add;

            createfood();

        }

        else                               //没有食物

        {

            nexthead->next=head;

            head=nexthead;

            q=head;

            while(q->next->next!=NULL)

            {

                Pos(q->x,q->y);

                printf("■");

                q=q->next;        

            }

            Pos(q->next->x,q->next->y);

            printf("  ");

            free(q->next);

            q->next=NULL;

        }

    }

    if(status==L)

    {

        nexthead->x=head->x-2;

        nexthead->y=head->y;

        if(nexthead->x==food->x && nexthead->y==food->y)//有食物

        {

            nexthead->next=head;

            head=nexthead;

            q=head;

            while(q!=NULL)

            {

                Pos(q->x,q->y);

                printf("■");

                q=q->next;

            }

            score=score+add;

            createfood();

        }

        else                                //没有食物

        {

            nexthead->next=head;

            head=nexthead;

            q=head;

            while(q->next->next!=NULL)

            {

                Pos(q->x,q->y);

                printf("■");

                q=q->next;        

            }

            Pos(q->next->x,q->next->y);

            printf("  ");

            free(q->next);

            q->next=NULL;

        }

    }

    if(status==R)

    {

        nexthead->x=head->x+2;

        nexthead->y=head->y;

        if(nexthead->x==food->x && nexthead->y==food->y)//有食物

        {

            nexthead->next=head;

            head=nexthead;

            q=head;

            while(q!=NULL)

            {

                Pos(q->x,q->y);

                printf("■");

                q=q->next;

            }

            score=score+add;

            createfood();

        }

        else                                         //没有食物

        {

            nexthead->next=head;

            head=nexthead;

            q=head;

            while(q->next->next!=NULL)

            {

                Pos(q->x,q->y);

                printf("■");

                q=q->next;        

            }

            Pos(q->next->x,q->next->y);

            printf("  ");

            free(q->next);

            q->next=NULL;

        }

    }

    if(biteself()==1)       //判断是否会咬到自己

    {

        endgamestatus=2;

        endgame();

    }

}

 

void pause()//暂停

{

    while(1)

    {

        Sleep(300);

        if(GetAsyncKeyState(VK_SPACE))

        {

            break;

        }

         

    }

}

 

void gamecircle()//控制游戏        

{

 

    Pos(64,15);

    printf("不能穿墙,不能咬到自己\n");

    Pos(64,16);

    printf("用↑.↓.←.→分别控制蛇的移动.");

    Pos(64,17);

    printf("F1 为加速,F2 为减速\n");

    Pos(64,18);

    printf("ESC :退出游戏.space:暂停游戏.");

    Pos(64,20);

printf("C语言研究中心 www.clang.cc");

status=R;

    while(1)

    {

        Pos(64,10);

        printf("得分:%d  ",score);

        Pos(64,11);

        printf("每个食物得分:%d分",add);

        if(GetAsyncKeyState(VK_UP) && status!=D)

        {

            status=U;

        }

        else if(GetAsyncKeyState(VK_DOWN) && status!=U)

        {

            status=D;

        }

        else if(GetAsyncKeyState(VK_LEFT)&& status!=R)

        {

            status=L;

        }

        else if(GetAsyncKeyState(VK_RIGHT)&& status!=L)

        {

            status=R;

        }

        else if(GetAsyncKeyState(VK_SPACE))

        {

            pause();

        }

        else if(GetAsyncKeyState(VK_ESCAPE))

        {

            endgamestatus=3;

            break;

        }

        else if(GetAsyncKeyState(VK_F1))

        {

            if(sleeptime>=50)

            {

                sleeptime=sleeptime-30;

                add=add+2;

                if(sleeptime==320)

                {

                    add=2;//防止减到1之后再加回来有错

                }

            }

        }

        else if(GetAsyncKeyState(VK_F2))

        {

            if(sleeptime<350)

            {

                sleeptime=sleeptime+30;

                add=add-2;

                if(sleeptime==350)

                {

                    add=1;  //保证最低分为1

                }

            }

        }

        Sleep(sleeptime);

        snakemove();

    }

}

 

void welcometogame()//开始界面

{

    Pos(40,12);

 

system("title C语言研究中心   www.clang.cc");

    printf("欢迎来到贪食蛇游戏!");

    Pos(40,25);

    printf("              C语言研究中心  www.clang.cc.\n");

    system("pause");

    system("cls");

    Pos(25,12);

    printf("用↑.↓.←.→分别控制蛇的移动, F1 为加速,2 为减速\n");

    Pos(25,13);

    printf("加速将能得到更高的分数。\n");

    system("pause");

    system("cls");

}

 

void endgame()//结束游戏

{

     

    system("cls");

    Pos(24,12);

    if(endgamestatus==1)

    {

        printf("对不起,您撞到墙了。游戏结束.");

    }

    else if(endgamestatus==2)

    {

        printf("对不起,您咬到自己了。游戏结束.");

    }

    else if(endgamestatus==3)

    {

        printf("您的已经结束了游戏。");

    }

    Pos(24,13);

    printf("您的得分是%d\n",score);

    exit(0);

}

 

void gamestart()//游戏初始化

{

    system("mode con cols=100 lines=30");

    welcometogame();

    creatMap();

    initsnake();

    createfood();

}

 

int main()

{

    gamestart();

    gamecircle();

    endgame();

return 0;

}

从上面来看,我们不难看出,贪吃蛇游戏的源代码可以说是比较复杂的。大家可能都没想到,贪吃蛇看起来是一个简单,易上手的游戏,但在它的研发背后,可以说是要花费不少的时间和精力,由此可见c语言真的是一门博大精深的学问,要想精通它,我们也得不断地努力,实践。