写一个带图像的贪吃蛇C++

以下是一个简单的带图像的贪吃蛇C++代码。它使用了EasyX图形库来实现图像的绘制和显示。你需要先安装EasyX图形库才能运行此代码。

#include <graphics.h>
#include <conio.h>
#include <time.h>

#define ROWS 30
#define COLS 30
#define BLOCK_SIZE 20

struct Point {
    int x, y;
};

enum Direction {
    UP, DOWN, LEFT, RIGHT
};

Direction dir = RIGHT;
Point snake[ROWS * COLS];
int snake_length = 3;
Point food;

void init() {
    initgraph(COLS * BLOCK_SIZE, ROWS * BLOCK_SIZE, SHOWCONSOLE);
    setbkcolor(WHITE);
    cleardevice();

    // 初始化蛇
    snake[0].x = 2;
    snake[0].y = 0;
    snake[1].x = 1;
    snake[1].y = 0;
    snake[2].x = 0;
    snake[2].y = 0;

    // 随机生成食物位置
    srand((unsigned int)time(NULL));
    food.x = rand() % COLS;
    food.y = rand() % ROWS;
}

void draw_block(int x, int y, COLORREF color) {
    setfillcolor(color);
    setlinecolor(BLACK);
    fillrectangle(x * BLOCK_SIZE, y * BLOCK_SIZE, (x + 1) * BLOCK_SIZE, (y + 1) * BLOCK_SIZE);
}

void draw_snake() {
    for (int i = 0; i < snake_length; i++) {
        draw_block(snake[i].x, snake[i].y, i == 0 ? LIGHTBLUE : YELLOW);
    }
}

void draw_food() {
    draw_block(food.x, food.y, RED);
}

bool is_collide(int x, int y) {
    if (x < 0 || x >= COLS || y < 0 || y >= ROWS) {
        return true;
    }
    for (int i = 1; i < snake_length; i++) {
        if (snake[i].x == x && snake[i].y == y) {
            return true;
        }
    }
    return false;
}

bool move_snake() {
    int x = snake[0].x;
    int y = snake[0].y;
    switch (dir) {
    case UP:
        y--;
        break;
    case DOWN:
        y++;
        break;
    case LEFT:
        x--;
        break;
    case RIGHT:
        x++;
        break;
    }
    if (is_collide(x, y)) {
        return false;
    }
    // 判断是否吃到食物
    if (x == food.x && y == food.y) {
        snake_length++;
        food.x = rand() % COLS;
        food.y = rand() % ROWS;
    }
    // 移动蛇
    for (int i = snake_length - 1; i > 0; i--) {
        snake[i].x = snake[i - 1].x;
        snake[i].y = snake[i - 1].y;
    }
    snake[0].x = x;
    snake[0].y = y;
    return true;
}

void change_direction() {
    if (_kbhit()) {
        int ch = _getch();
        switch (ch) {
        case 'w':
        case 'W':
            if (dir != DOWN) {
                dir = UP;
            }
            break;
        case 's':
        case 'S':
            if (dir != UP) {
                dir = DOWN;
            }
            break;
        case 'a':
        case 'A':
            if (dir != RIGHT) {
                dir = LEFT;
            }
            break;
        case 'd':
        case 'D':
            if (dir != LEFT) {
                dir = RIGHT;
            }
            break;
        }
    }
}

int main() {
    init();
    while (true) {
        cleardevice();
        draw_snake();
        draw_food();
        if (!move_snake()) {
            break;
        }
        change_direction();
        Sleep(200);
    }
    settextstyle(50, 0, _T("Arial"));
    settextcolor(BLACK);
    outtextxy(150, 200, _T("Game Over"));
    _getch();
    closegraph();
    return 0;
}

运行效果如下：