用cocos2d-x 3.9.0写植物大战僵尸

写植物大战僵尸游戏需要掌握cocos2d-x引擎的基础知识，包括场景、图层、精灵、动画等，同时还需要了解游戏的规则和逻辑。下面是一个简单的植物大战僵尸游戏的实现思路：

1. 创建游戏场景和游戏图层
2. 加载游戏背景、植物、僵尸等资源
3. 实现植物的种植和僵尸的出现
4. 实现植物攻击僵尸和僵尸攻击植物
5. 实现游戏结束和胜利的判定

具体实现细节可以参考下面的代码示例：

1. 创建游戏场景和游戏图层

auto scene = Scene::create();
auto layer = Layer::create();
scene->addChild(layer);

2. 加载游戏资源

auto bg = Sprite::create("bg.png");
auto sunflower = Sprite::create("sunflower.png");
auto zombie = Sprite::create("zombie.png");

3. 实现植物的种植和僵尸的出现

auto addSunflower = CallFunc::create([&](){
    auto sunflower = Sprite::create("sunflower.png");
    sunflower->setPosition(Vec2(100, 100));
    layer->addChild(sunflower);
});
auto addZombie = CallFunc::create([&](){
    auto zombie = Sprite::create("zombie.png");
    zombie->setPosition(Vec2(500, 100));
    layer->addChild(zombie);
});
auto sequence = Sequence::create(addSunflower, DelayTime::create(5.0f), addZombie, nullptr);
layer->runAction(RepeatForever::create(sequence));

4. 实现植物攻击僵尸和僵尸攻击植物

auto sunflowerAttack = CallFunc::create([&](){
    // 植物攻击
    auto bullet = Sprite::create("bullet.png");
    bullet->setPosition(sunflower->getPosition());
    layer->addChild(bullet);
    auto move = MoveTo::create(1.0f, zombie->getPosition());
    auto remove = RemoveSelf::create();
    bullet->runAction(Sequence::create(move, remove, nullptr));
});
auto zombieAttack = CallFunc::create([&](){
    // 僵尸攻击
    auto attack = Sprite::create("attack.png");
    attack->setPosition(zombie->getPosition());
    layer->addChild(attack);
    auto remove = RemoveSelf::create();
    attack->runAction(Sequence::create(DelayTime::create(1.0f), remove, nullptr));
});
auto sunflowerSequence = Sequence::create(sunflowerAttack, DelayTime::create(1.0f), nullptr);
sunflower->runAction(RepeatForever::create(sunflowerSequence));
auto zombieSequence = Sequence::create(zombieAttack, DelayTime::create(1.0f), nullptr);
zombie->runAction(RepeatForever::create(zombieSequence));

5. 实现游戏结束和胜利的判定

bool isGameOver = false;
bool isGameWin = false;
auto checkGameOver = CallFunc::create([&](){
    if (isGameOver) {
        // 游戏结束
        // ...
    }
});
auto checkGameWin = CallFunc::create([&](){
    if (isGameWin) {
        // 游戏胜利
        // ...
    }
});
auto gameOverSequence = Sequence::create(DelayTime::create(10.0f), checkGameOver, nullptr);
auto gameWinSequence = Sequence::create(DelayTime::create(10.0f), checkGameWin, nullptr);
layer->runAction(gameOverSequence);
layer->runAction(gameWinSequence);

以上就是一个简单的植物大战僵尸游戏的实现思路，具体实现还需要根据自己的需求进行调整和完善。