c语言写一个贪吃蛇游戏代码

以下是一个基本的C语言贪吃蛇游戏代码示例：

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

#define WIDTH 30 // 游戏界面宽度
#define HEIGHT 20 // 游戏界面高度

int snake[WIDTH * HEIGHT][2]; // 蛇身
int food[2]; // 食物
int score = 0; // 得分
int direction = 2; // 蛇头方向，初始向右
int speed = 200; // 蛇移动速度，单位毫秒

void gotoxy(int x, int y) {
    COORD c;
    c.X = x;
    c.Y = y;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), c);
}

void draw() {
    system("cls");
    for (int i = 0; i <= WIDTH + 1; i++) {
        gotoxy(i, 0);
        printf("#");
        gotoxy(i, HEIGHT + 1);
        printf("#");
    }
    for (int i = 0; i <= HEIGHT + 1; i++) {
        gotoxy(0, i);
        printf("#");
        gotoxy(WIDTH + 1, i);
        printf("#");
    }
    for (int i = 1; i <= score; i++) {
        gotoxy(snake[i][0], snake[i][1]);
        printf("*");
    }
    gotoxy(food[0], food[1]);
    printf("@");
    gotoxy(WIDTH + 3, 2);
    printf("Score: %d", score);
}

void init() {
    srand(time(NULL));
    snake[1][0] = 5;
    snake[1][1] = 5;
    snake[2][0] = 4;
    snake[2][1] = 5;
    food[0] = rand() % (WIDTH - 2) + 2;
    food[1] = rand() % (HEIGHT - 2) + 2;
    draw();
}

void move() {
    for (int i = score; i >= 2; i--) {
        snake[i][0] = snake[i - 1][0];
        snake[i][1] = snake[i - 1][1];
    }
    switch (direction) {
        case 1: // 上
            snake[1][1]--;
            break;
        case 2: // 右
            snake[1][0]++;
            break;
        case 3: // 下
            snake[1][1]++;
            break;
        case 4: // 左
            snake[1][0]--;
            break;
    }
    if (snake[1][0] == food[0] && snake[1][1] == food[1]) {
        score++;
        food[0] = rand() % (WIDTH - 2) + 2;
        food[1] = rand() % (HEIGHT - 2) + 2;
    }
}

int main() {
    init();
    while (1) {
        if (_kbhit()) {
            int ch = _getch();
            if (ch == 224) {
                ch = _getch();
                if ((ch == 72 && direction != 3) || (ch == 80 && direction != 1)
                    || (ch == 77 && direction != 4) || (ch == 75 && direction != 2)) {
                    direction = ch == 72 ? 1 : (ch == 80 ? 3 : (ch == 77 ? 2 : 4));
                }
            } else if (ch == ' ') {
                while (_getch() != ' ');
            } else {
                break;
            }
        }
        move();
        draw();
        Sleep(speed);
    }
    return 0;
}

这里使用了Windows API函数`gotoxy`实现控制光标位置输出字符，同时使用了`_kbhit`和`_getch`函数实现键盘输入检测和读取。游戏的核心逻辑在`move`函数中实现，包括蛇的移动、食物的生成和得分的更新。