控制台贪吃蛇

（不完善，只是实现了基本的操作以及分数的统计）
方法：用一个二维数组保存蛇的坐标，之后依次输出蛇。
蛇的位置每次只移动一下，蛇头坐标改变，则第一个蛇身坐标等于蛇头，依次下去，第二个蛇身等于第一个蛇身 ，··· 。
蛇每次移动的过程中之前的蛇尾用空格来擦除。
以下是代码：代码写得丑，求轻喷！

#include<iostream>
#include<Windows.h>
#include<conio.h>
#include<time.h>
using namespace std;
using std::cout;

typedef enum { UP = 1, DOWN, RIGHT, LEFT } Direct;
Direct Dir = LEFT;  //蛇初始方向
int boundX = 40;int boundY = 20; // 界面大小
int Score = 0;  //分数
short ScoX = 42;short ScoY = 10; //分数输出位置
short FoodX, FoodY;
bool Alive = true;bool NoFood = true;
int LastX;int LastY; //记录要擦除的蛇坐标
int len = 3;    //蛇初始长度
int Snake[200][2];

void Goto_xy(short X, short Y);
void HideCursor();
void paint();
bool logic();
void Getkey();
void GameOver();
void PrintScore();
void init();

void Paint_Map() //画边框
{
    for (int y = 0, x = 0; y < boundY; y++) {
        for (x = 0; x < boundX; x++) {
            if (y == 0 || y == boundY - 1)
                cout << "=";
            else if (x == 0 || x == boundX - 1)
                cout << "#";
            else cout << " ";
        }
        cout << endl;
    }
    return;
}

void Goto_xy(short X,short Y)  //移动光标位置
{
    HANDLE hOut;
    hOut = GetStdHandle(STD_OUTPUT_HANDLE);
    COORD pos = { X,Y};
    SetConsoleCursorPosition(hOut, pos);
}

void HideCursor() //隐藏光标
{
    CONSOLE_CURSOR_INFO cursor_info = { 1,0 };
    SetConsoleCursorInfo(GetStdHandle(STD_OUTPUT_HANDLE), &cursor_info);
}

bool logic()  //游戏大体逻辑
{
    Sleep(150);
    LastX = Snake[len-2][0]; //更新数组中的蛇各个位置坐标
    LastY = Snake[len - 2][1];
    for (int i = len -2; i >0; --i) {
        Snake[i][0] = Snake[i - 1][0];
        Snake[i][1] = Snake[i - 1][1];
    }
    Snake[0][0] = Snake[len - 1][0];
    Snake[0][1] = Snake[len - 1][1];
    switch (Dir) {      //由蛇的方向来改变蛇头的坐标
    case UP:
        Snake[len-1][1]--;
        break;
    case DOWN:
        Snake[len-1][1]++;
        break;
    case RIGHT:
        Snake[len-1][0]++;
        break;
    case LEFT:
        Snake[len-1][0]--;
        break;
    }
    for (int i = 0; i < len - 1; ++i) { //判断蛇头是否撞到自己
        if (Snake[len - 1][0] == Snake[i][0] && Snake[len - 1][1] == Snake[i][1]) {
            Alive = false;
            break;
        }
    }
    if (Snake[len - 1][0] == FoodX && Snake[len - 1][1] == FoodY) { //蛇头坐标等于食物坐标
        ++len;
        Snake[len - 1][0] = FoodX;
        Snake[len - 1][1] = FoodY;
        Score += 10;
        NoFood = true;
    }
    if (NoFood) {   //如果吃到食物，更新坐标
        int tmpX = Snake[len - 2][0];
        int tmpY = Snake[len - 2][1];
        for (int i = len - 2; i > 0; --i) {
            Snake[i][0] = Snake[i - 1][0];
            Snake[i][1] = Snake[i - 1][1];
        }
        Snake[0][0] = tmpX;
        Snake[0][1] = tmpY;
    }
    if (Snake[len - 1][0] < 1 || Snake[len - 1][0] > boundX - 2 || Snake[len - 1][1] < 1 || Snake[len - 1][1]> boundY - 2) //判断蛇撞墙
        Alive = false;
    return Alive;
}

void paint()
{
    Goto_xy(42, 2);
    cout << "W上，A左，S下，D右";  //输出操作方法
    Goto_xy(ScoX,ScoY);
    cout << "您的分数是：" << Score; //输出分数
    Goto_xy(LastX, LastY);  
    cout << " ";    //用空格擦除蛇尾
    for (int i = 0; i < len; ++i) { //遍历数组将蛇打印出来
        Goto_xy(Snake[i][0], Snake[i][1]);
        if (i == len - 1)
            switch (Dir) {
            case UP: cout << "W"; break;
            case DOWN: cout << "S"; break;
            case RIGHT: cout << "D"; break;
            case LEFT: cout << "A"; break;
            }
        else 
            cout << "o";
    }
    if (NoFood) {   //如果食物被吃，则输出新的事物
        srand((unsigned int)time(NULL));
        FoodX = rand() % 38 + 1;
        FoodY = rand() % 18 + 1;
        Goto_xy(FoodX, FoodY);
        cout << "*";
        NoFood = false;
    }
    return;
}

void GameOver() //游戏结束
{
    system("cls");
    for (int i = 0; i < 5;++i)
        cout << endl;
    for (int i = 0; i < 29; ++i)
        cout << " ";
    cout << "Gameover and press any key to quit";
    while (1)
        if (_kbhit())
            break;
    return;
}

void Getkey()
{
    char key;
    if (_kbhit()){ //获得键盘消息更改蛇位置
        key = _getch();
        switch (key) {
        case 'w':
            Dir = UP;
            break;
        case 'a':
            Dir = LEFT;
            break;
        case 's':
            Dir = DOWN;
            break;      
        case 'd':
            Dir = RIGHT;
            break;
        }
    }
}

void init()
{
    len = 3;
    Snake[0][0] = 19;
    Snake[0][1] = 9;
    Snake[1][0] = 20;
    Snake[1][1] = 9;
    Snake[2][0] = 18;
    Snake[2][1] = 9;
}

int main()
{
    init();
    HideCursor();
    Paint_Map();
    while(Alive){
        paint();
        Getkey();
        Alive = logic();
    }
    GameOver();
    return 0;
}