在Windows环境下的C语言小项目——贪吃蛇

#include 
#include 
#include 
#include 

#define U 1
#define D 2
#define L 3
#define R 4 // status of snake

typedef struct SNAKE //蛇身的一个节点
{
    int x;
    int y;
    struct SNAKE *next;
} snake;

// global variable
int score = 0, add = 10;     //总得分与每次吃食物得分
int status, sleeptime = 200; //每次运行时间间隔
snake *head, *food;          //蛇头指针，食物指针
snake *q;                    //遍历蛇的时候用到的临时指针
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

void Pos();
void CreatMap();
void InitSnake();
int BiteSelf();
void CreateFood();
void CantCrossWall();
void SnakeMove();
void Pause();
void RunGame();
void InitGame();
void EndGame();
void GameStart();

int main()     //主函数
{
    GameStart();
    RunGame();
    return 1;
}
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); //返回标准输入、输出
    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("■"); //一个方块占两个位置
        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++) //初始长度为5
    {
        head = (snake *)malloc(sizeof(snake));
        head->next = tail;
        head->x = 24 + 2 * i; //修改
        head->y = 5;
        tail = head;
    }
    while (tail != NULL) //从头到尾，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)); //为了防止每次产生的随机数相同，种子设置为time
    food_1 = (snake *)malloc(sizeof(snake));
    while (1)
    {
        food_1->x = 3;
        while ((food_1->x % 2) != 0) //保证食物能与蛇头对其
        {
            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)
            {        //判断刷新点与蛇身重合
                break;
            }
            q = q->next;
        }
        if(q->next ==NULL) break; 
    }
    Pos(food_1->x, food_1->y);
    food = food_1;
    //*****************************************************
    HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
    WORD wOldColorAttrs;
    CONSOLE_SCREEN_BUFFER_INFO csbiInfo;

    // Save the current color
    GetConsoleScreenBufferInfo(h, &csbiInfo);
    wOldColorAttrs = csbiInfo.wAttributes;

    // Set the new color
    SetConsoleTextAttribute(h, FOREGROUND_RED | FOREGROUND_INTENSITY | BACKGROUND_BLUE); //| BACKGROUND_GREEN
    printf("●");
    SetConsoleTextAttribute(h, wOldColorAttrs);
    //****************************************************
    // 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)
        {
            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)
        {
            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 == L)
    {
        nexthead->x = head->x - 2;
        nexthead->y = head->y;
        if (nexthead->x == food->x && nexthead->y == food->y)
        {
            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 == R)
    {
        nexthead->x = head->x + 2;
        nexthead->y = head->y;
        if (nexthead->x == food->x && nexthead->y == food->y)
        {
            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 (BiteSelf() == 1)
    {
        endGamestatus = 2;
        EndGame();
    }
}

void Pause() //暂停
{
    while (1)
    {
        Sleep(300);
        if (GetAsyncKeyState(VK_SPACE))
        {
            break;
        }
    }
}

void RunGame() //控制游戏
{
    Pos(64, 14);
    printf("================================");
    Pos(64, 15);
    printf("|   不能穿墙，不能咬到自己     |");
    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         |");
    Pos(64, 18);
    printf("|ESC:退出游戏,spare:暂停游戏.  |");
    Pos(64, 19);
    printf("================================");
    status = R;
    while (1)
    {
        Pos(64, 10);
        printf("得分:%d", score);
        Pos(64, 11);
        printf("每个食物得分为:%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 -= 30;
                add += 2;
                if (sleeptime == 320)
                    add = 2;
            }
        }
        else if (GetAsyncKeyState(VK_F2))
        {
            if (sleeptime < 350)
            {
                sleeptime += 30;
                add -= 2;
                if (sleeptime == 350)
                    add = 1;
            }
        }
        Sleep(sleeptime);
        SnakeMove();
    }
}

void InitGame() //开始界面
{
    Pos(30, 5);
    printf("欢迎");
    // Pos(40,25);
    system("pause");
    system("cls");
    Pos(25, 12);
    printf("↑↓←→控制蛇的移动，F1 为加速，F2 为减速nn");
    printf("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。Game Over");
    }
    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%dn", score);
    while (getchar() != 'y')
        printf("close?[y]");
    exit(0);
}

void GameStart() //游戏初始化
{
    system("mode con cols=100 lines=30");
    InitGame();
    CreatMap();
    InitSnake();
    CreateFood();
}