帮我使用C语言编写一个贪吃蛇游戏

好的，我可以帮您使用C语言编写一个贪吃蛇游戏。以下是一个简单的示例代码：

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

#define WIDTH 20
#define HEIGHT 20
#define SNAKE_MAX_LENGTH 100

int snakeX[SNAKE_MAX_LENGTH], snakeY[SNAKE_MAX_LENGTH];
int snakeLength = 3;
int foodX, foodY;
int score = 0;
int direction = 0; // 0: up, 1: right, 2: down, 3: left

void initGame() {
    // 初始化蛇的位置
    snakeX[0] = WIDTH / 2;
    snakeY[0] = HEIGHT / 2;
    snakeX[1] = snakeX[0];
    snakeY[1] = snakeY[0] + 1;
    snakeX[2] = snakeX[0];
    snakeY[2] = snakeY[0] + 2;

    // 随机生成食物的位置
    srand(time(NULL));
    foodX = rand() % WIDTH;
    foodY = rand() % HEIGHT;
}

void drawGame() {
    system("cls"); // 清屏

    // 画出地图
    for (int i = 0; i < WIDTH + 2; i++) {
        printf("#");
    }
    printf("\n");
    for (int i = 0; i < HEIGHT; i++) {
        printf("#");
        for (int j = 0; j < WIDTH; j++) {
            if (i == snakeY[0] && j == snakeX[0]) {
                printf("O"); // 画出蛇头
            } else if (i == foodY && j == foodX) {
                printf("*"); // 画出食物
            } else {
                int isBody = 0;
                for (int k = 1; k < snakeLength; k++) {
                    if (i == snakeY[k] && j == snakeX[k]) {
                        printf("o"); // 画出蛇身
                        isBody = 1;
                        break;
                    }
                }
                if (!isBody) {
                    printf(" ");
                }
            }
        }
        printf("#\n");
    }
    for (int i = 0; i < WIDTH + 2; i++) {
        printf("#");
    }
    printf("\n");

    // 显示得分
    printf("Score: %d\n", score);
}

void updateGame() {
    // 移动蛇
    for (int i = snakeLength - 1; i > 0; i--) {
        snakeX[i] = snakeX[i - 1];
        snakeY[i] = snakeY[i - 1];
    }
    switch (direction) {
        case 0: snakeY[0]--; break;
        case 1: snakeX[0]++; break;
        case 2: snakeY[0]++; break;
        case 3: snakeX[0]--; break;
    }

    // 判断是否吃到食物
    if (snakeX[0] == foodX && snakeY[0] == foodY) {
        score++;
        snakeLength++;
        foodX = rand() % WIDTH;
        foodY = rand() % HEIGHT;
    }

    // 判断是否撞墙或撞到自己
    if (snakeX[0] < 0 || snakeX[0] >= WIDTH || snakeY[0] < 0 || snakeY[0] >= HEIGHT) {
        printf("Game over!\n");
        exit(0);
    }
    for (int i = 1; i < snakeLength; i++) {
        if (snakeX[0] == snakeX[i] && snakeY[0] == snakeY[i]) {
            printf("Game over!\n");
            exit(0);
        }
    }
}

int main() {
    initGame();

    while (1) {
        drawGame();
        updateGame();

        // 处理输入
        if (_kbhit()) {
            int key = _getch();
            if (key == 'w' && direction != 2) {
                direction = 0;
            } else if (key == 'd' && direction != 3) {
                direction = 1;
            } else if (key == 's' && direction != 0) {
                direction = 2;
            } else if (key == 'a' && direction != 1) {
                direction = 3;
            }
        }

        // 控制游戏速度
        Sleep(100);
    }

    return 0;
}

希望这个示例代码能够帮到您！