C语言代码：给我一个贪吃蛇游戏代码

以下是一个简单的贪吃蛇游戏的 C 语言代码：

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>

#define WIDTH 20
#define HEIGHT 20

int score;
int gameover;
int speed;
int x, y;
int fruit_x, fruit_y;
int tail_x[100], tail_y[100];
int ntail;

enum direction { STOP = 0, LEFT, RIGHT, UP, DOWN };
enum direction dir;

void Setup()
{
    gameover = 0;
    dir = STOP;
    x = WIDTH / 2;
    y = HEIGHT / 2;
    fruit_x = rand() % WIDTH;
    fruit_y = rand() % HEIGHT;
    score = 0;
    speed = 100;
    ntail = 0;
}

void Draw()
{
    system("cls");

    for (int i = 0; i < HEIGHT + 2; i++)
    {
        for (int j = 0; j < WIDTH + 2; j++)
        {
            if (i == 0 || i == HEIGHT + 1)
                printf("#");
            else if (j == 0 || j == WIDTH + 1)
                printf("#");
            else if (i == y && j == x)
                printf("O");
            else if (i == fruit_y && j == fruit_x)
                printf("F");
            else
            {
                int print_tail = 0;
                for (int k = 0; k < ntail; k++)
                {
                    if (tail_x[k] == j && tail_y[k] == i)
                    {
                        printf("o");
                        print_tail = 1;
                    }
                }

                if (!print_tail)
                    printf(" ");
            }
        }
        printf("\n");
    }

    printf("Score: %d\n", score);
    printf("Speed: %d\n", speed);
}

void Input()
{
    if (_kbhit())
    {
        switch (_getch())
        {
        case 'a':
            dir = LEFT;
            break;
        case 'd':
            dir = RIGHT;
            break;
        case 'w':
            dir = UP;
            break;
        case 's':
            dir = DOWN;
            break;
        case 'x':
            gameover = 1;
            break;
        }
    }
}

void Logic()
{
    int prev_x = tail_x[0];
    int prev_y = tail_y[0];
    int prev2_x, prev2_y;
    tail_x[0] = x;
    tail_y[0] = y;

    for (int i = 1; i < ntail; i++)
    {
        prev2_x = tail_x[i];
        prev2_y = tail_y[i];
        tail_x[i] = prev_x;
        tail_y[i] = prev_y;
        prev_x = prev2_x;
        prev_y = prev2_y;
    }

    switch (dir)
    {
    case LEFT:
        x--;
        break;
    case RIGHT:
        x++;
        break;
    case UP:
        y--;
        break;
    case DOWN:
        y++;
        break;
    }

    if (x < 1 || x > WIDTH || y < 1 || y > HEIGHT)
        gameover = 1;

    for (int i = 0; i < ntail; i++)
    {
        if (tail_x[i] == x && tail_y[i] == y)
            gameover = 1;
    }

    if (x == fruit_x && y == fruit_y)
    {
        score += 10;
        fruit_x = rand() % WIDTH;
        fruit_y = rand() % HEIGHT;
        ntail++;
        speed -= 5;
    }
}

int main()
{
    Setup();

    while (!gameover)
    {
        Draw();
        Input();
        Logic();
        Sleep(speed);
    }

    printf("Game Over!\n");

    return 0;
}

该代码基于控制台，在 Windows 系统下编译运行。游戏规则与经典贪吃蛇游戏相同，玩家通过方向键控制蛇的移动，吃到食物加分并增加蛇的长度，碰到边界或自身游戏结束。