用手指在Cocos2d中旋转精灵

// 创建精灵
auto sprite = Sprite::create("sprite.png");

// 设置精灵位置
sprite->setPosition(Vec2(200, 200));

// 添加精灵到场景
auto scene = Scene::create();
scene->addChild(sprite);

// 监听触摸事件
auto listener = EventListenerTouchOneByOne::create();
listener->onTouchBegan = [](Touch* touch, Event* event) {
    auto target = static_cast<Sprite*>(event->getCurrentTarget());
    auto location = target->convertToNodeSpace(touch->getLocation());
    
    // 判断是否点击到精灵
    if (target->getBoundingBox().containsPoint(location)) {
        return true;
    }
    return false;
};
listener->onTouchMoved = [](Touch* touch, Event* event) {
    auto target = static_cast<Sprite*>(event->getCurrentTarget());
    auto location = target->convertToNodeSpace(touch->getLocation());
    
    // 计算旋转角度
    auto angle = atan2(location.y, location.x) * 180 / M_PI;
    
    // 设置精灵旋转角度
    target->setRotation(angle);
};
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, sprite);