写一段可以在DEVC++上跑的贪吃蛇代码

以下是一个简单的贪吃蛇代码，可以在DEVC++上运行。代码注释较详细，希望能帮助到你。

#include <iostream>
#include <conio.h> //用于获取键盘输入
#include <windows.h> //用于调整控制台窗口大小和光标位置
using namespace std;

//定义游戏界面大小
const int width = 20;
const int height = 20;

//定义蛇和食物的坐标
int snakeX, snakeY, foodX, foodY;

//定义蛇的长度和分数
int snakeLength = 1;
int score = 0;

//定义蛇的移动方向
enum Direction { STOP = 0, LEFT, RIGHT, UP, DOWN };
Direction dir;

//定义蛇的身体坐标数组
int tailX[100], tailY[100];
int nTail = 0;

//定义绘制游戏界面的函数
void Draw()
{
    system("cls"); //清空控制台

    //绘制上边框
    for (int i = 0; i < width + 2; i++)
        cout << "#";
    cout << endl;

    //绘制游戏界面
    for (int i = 0; i < height; i++)
    {
        for (int j = 0; j < width; j++)
        {
            if (j == 0)
                cout << "#"; //绘制左边框
            if (i == snakeY && j == snakeX)
                cout << "O"; //绘制蛇头
            else if (i == foodY && j == foodX)
                cout << "F"; //绘制食物
            else
            {
                bool print = false;
                for (int k = 0; k < nTail; k++)
                {
                    if (tailX[k] == j && tailY[k] == i)
                    {
                        cout << "o"; //绘制蛇身体
                        print = true;
                    }
                }
                if (!print)
                    cout << " "; //绘制空格
            }
            if (j == width - 1)
                cout << "#"; //绘制右边框
        }
        cout << endl;
    }

    //绘制下边框
    for (int i = 0; i < width + 2; i++)
        cout << "#";
    cout << endl;

    //输出分数和游戏说明
    cout << "Score: " << score << endl;
    cout << "Use arrow keys to move the snake. Press X to quit." << endl;
}

//定义初始化游戏的函数
void Setup()
{
    //初始化蛇的位置和方向
    snakeX = width / 2;
    snakeY = height / 2;
    dir = STOP;

    //随机生成食物的位置
    foodX = rand() % width;
    foodY = rand() % height;

    //初始化分数和身体长度
    score = 0;
    snakeLength = 1;
}

//定义蛇移动的函数
void Move()
{
    //更新蛇的身体坐标数组
    int prevX = tailX[0];
    int prevY = tailY[0];
    int prev2X, prev2Y;
    tailX[0] = snakeX;
    tailY[0] = snakeY;
    for (int i = 1; i < nTail; i++)
    {
        prev2X = tailX[i];
        prev2Y = tailY[i];
        tailX[i] = prevX;
        tailY[i] = prevY;
        prevX = prev2X;
        prevY = prev2Y;
    }

    //移动蛇的头部
    switch (dir)
    {
    case LEFT:
        snakeX--;
        break;
    case RIGHT:
        snakeX++;
        break;
    case UP:
        snakeY--;
        break;
    case DOWN:
        snakeY++;
        break;
    }

    //判断是否吃到食物
    if (snakeX == foodX && snakeY == foodY)
    {
        score += 10;
        snakeLength++;
        nTail++;
        foodX = rand() % width;
        foodY = rand() % height;
    }

    //判断是否撞墙或撞到自己的身体
    if (snakeX < 0 || snakeX >= width || snakeY < 0 || snakeY >= height)
    {
        cout << "Game Over!" << endl;
        Sleep(2000); //暂停2秒
        exit(0);
    }
    for (int i = 0; i < nTail; i++)
    {
        if (tailX[i] == snakeX && tailY[i] == snakeY)
        {
            cout << "Game Over!" << endl;
            Sleep(2000); //暂停2秒
            exit(0);
        }
    }
}

//定义获取键盘输入的函数
void Input()
{
    if (_kbhit()) //如果有键盘输入
    {
        switch (_getch()) //获取键盘输入的字符
        {
        case 'a':
            dir = LEFT;
            break;
        case 'd':
            dir = RIGHT;
            break;
        case 'w':
            dir = UP;
            break;
        case 's':
            dir = DOWN;
            break;
        case 'x':
            cout << "Game Over!" << endl;
            Sleep(2000); //暂停2秒
            exit(0);
            break;
        }
    }
}

//主函数
int main()
{
    Setup(); //初始化游戏

    while (true)
    {
        Draw(); //绘制游戏界面
        Input(); //获取键盘输入
        Move(); //移动蛇
        Sleep(100); //暂停100毫秒，控制蛇的移动速度
    }

    return 0;
}