c语言贪吃蛇游戏代码

下面是一个简单的贪吃蛇游戏的C语言代码：

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <time.h>
#define N 20

int x, y, fx, fy, score, flag;
int bodyx[100], bodyy[100];

void init();
void draw();
void input();
void move();

int main()
{
    init();
    while (1)
    {
        draw();
        input();
        move();
        if (flag == 1)
            break;
    }
    printf("\nGame over! Your score is: %d", score);
    return 0;
}

void init()
{
    srand((unsigned)time(NULL));
    x = N / 2, y = N / 2;
    fx = rand() % N, fy = rand() % N;
    score = 0;
    flag = 0;
}

void draw()
{
    system("cls");
    for (int i = 0; i <= N; i++)
        printf("#");
    printf("\n");
    for (int i = 0; i < N; i++)
    {
        printf("#");
        for (int j = 0; j < N; j++)
        {
            if (i == x && j == y)
                printf("O");
            else if (i == fx && j == fy)
                printf("*");
            else
            {
                int flag = 0;
                for (int k = 0; k < score; k++)
                {
                    if (bodyx[k] == i && bodyy[k] == j)
                    {
                        printf("o");
                        flag = 1;
                        break;
                    }
                }
                if (!flag)
                    printf(" ");
            }
        }
        printf("#\n");
    }
    for (int i = 0; i <= N; i++)
        printf("#");
    printf("\nScore: %d", score);
}

void input()
{
    if (_kbhit())
    {
        switch (_getch())
        {
        case 'a':
            flag = (y == 0);
            y--;
            break;
        case 'd':
            flag = (y == N - 1);
            y++;
            break;
        case 'w':
            flag = (x == 0);
            x--;
            break;
        case 's':
            flag = (x == N - 1);
            x++;
            break;
        case 'x':
            flag = 1;
            break;
        }
    }
}

void move()
{
    if (x == fx && y == fy)
    {
        score++;
        fx = rand() % N;
        fy = rand() % N;
    }
    for (int i = score - 1; i > 0; i--)
    {
        bodyx[i] = bodyx[i - 1];
        bodyy[i] = bodyy[i - 1];
    }
    bodyx[0] = x;
    bodyy[0] = y;
    for (int i = 1; i < score; i++)
    {
        if (bodyx[i] == x && bodyy[i] == y)
            flag = 1;
    }
    if (x < 0 || x >= N || y < 0 || y >= N)
        flag = 1;
}

该代码实现了一个基本的贪吃蛇游戏，玩家通过输入方向键控制蛇的移动，吃到食物可以得分，撞到墙或自己的身体则游戏结束。