C语言贪吃蛇代码

以下是一个简单的C语言贪吃蛇的代码，仅供参考：

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

#define MAX_X 20
#define MAX_Y 20

int map[MAX_X][MAX_Y];
int snake[MAX_X * MAX_Y][2];
int length = 3;

int direction = 2;
int score = 0;
int speed = 200;

void initMap();
void initSnake();
void drawMap();
void drawSnake();
void updateMap();
void updateSnake();
void move();
int checkGameOver();
int checkEatFood();
void generateFood();

int main()
{
    srand((unsigned)time(NULL));
    initMap();
    initSnake();
    generateFood();
    drawMap();
    drawSnake();

    while (1) {
        if (_kbhit()) {
            char ch = _getch();
            if (ch == 'w' || ch == 'W') {
                if (direction != 1) {
                    direction = 0;
                }
            }
            else if (ch == 's' || ch == 'S') {
                if (direction != 0) {
                    direction = 1;
                }
            }
            else if (ch == 'a' || ch == 'A') {
                if (direction != 3) {
                    direction = 2;
                }
            }
            else if (ch == 'd' || ch == 'D') {
                if (direction != 2) {
                    direction = 3;
                }
            }
        }

        move();
        if (checkGameOver()) {
            break;
        }
        if (checkEatFood()) {
            score++;
            length++;
            generateFood();
            speed -= 10;
        }

        _sleep(speed);
    }

    printf("Game Over!\n");
    printf("Your score is %d\n", score);

    return 0;
}

void initMap()
{
    for (int i = 0; i < MAX_X; i++) {
        for (int j = 0; j < MAX_Y; j++) {
            if (i == 0 || i == MAX_X - 1 || j == 0 || j == MAX_Y - 1) {
                map[i][j] = -1;
            }
            else {
                map[i][j] = 0;
            }
        }
    }
}

void initSnake()
{
    for (int i = 0; i < length; i++) {
        snake[i][0] = 3 + i;
        snake[i][1] = 3;
        map[snake[i][0]][snake[i][1]] = 1;
    }
}

void drawMap()
{
    for (int i = 0; i < MAX_X; i++) {
        for (int j = 0; j < MAX_Y; j++) {
            if (map[i][j] == -1) {
                printf("#");
            }
            else if (map[i][j] == 0) {
                printf(" ");
            }
            else if (map[i][j] == 1) {
                printf("o");
            }
            else if (map[i][j] == 2) {
                printf("*");
            }
        }
        printf("\n");
    }
}

void drawSnake()
{
    for (int i = 0; i < length; i++) {
        printf("%d, %d\n", snake[i][0], snake[i][1]);
    }
}

void updateMap()
{
    for (int i = 0; i < MAX_X; i++) {
        for (int j = 0; j < MAX_Y; j++) {
            if (map[i][j] == 1) {
                map[i][j] = 0;
            }
        }
    }

    for (int i = 0; i < length; i++) {
        map[snake[i][0]][snake[i][1]] = 1;
    }

    map[snake[length - 1][0]][snake[length - 1][1]] = 0;
}

void updateSnake()
{
    int tail[2];
    tail[0] = snake[length - 1][0];
    tail[1] = snake[length - 1][1];

    for (int i = length - 1; i > 0; i--) {
        snake[i][0] = snake[i - 1][0];
        snake[i][1] = snake[i - 1][1];
    }

    if (direction == 0) {
        snake[0][1] -= 1;
    }
    else if (direction == 1) {
        snake[0][1] += 1;
    }
    else if (direction == 2) {
        snake[0][0] -= 1;
    }
    else if (direction == 3) {
        snake[0][0] += 1;
    }

    snake[length - 1][0] = tail[0];
    snake[length - 1][1] = tail[1];
}

void move()
{
    updateMap();
    updateSnake();
    system("cls");
    drawMap();
}

int checkGameOver()
{
    int head_x = snake[0][0];
    int head_y = snake[0][1];

    if (head_x == 0 || head_x == MAX_X - 1 || head_y == 0 || head_y == MAX_Y - 1) {
        return 1;
    }

    for (int i = 1; i < length; i++) {
        if (snake[i][0] == head_x && snake[i][1] == head_y) {
            return 1;
        }
    }

    return 0;
}

int checkEatFood()
{
    int head_x = snake[0][0];
    int head_y = snake[0][1];

    if (map[head_x][head_y] == 2) {
        return 1;
    }

    return 0;
}

void generateFood()
{
    int x, y;
    do {
        x = rand() % (MAX_X - 2) + 1;
        y = rand() % (MAX_Y - 2) + 1;
    } while (map[x][y] != 0);

    map[x][y] = 2;
}

该代码使用了Windows API的一些函数，因此只能在Windows环境下编译运行。如果你想在其他操作系统下运行，需要将这些函数替换为相应的函数。另外，该代码只是一个简单的示例，还有很多改进的空间。