CSLoader turns all children to Node

cocos2d-x
1

Hello, I’m using cocos2dx-3.10 to load a CSB published by Cocos Studio 3.10 with CSLoader::createNode(std::string filename). In the CSB I put in some widgets like Panel, Label… but in runtime, everything turned out to be Node, and I cannot cast them back to use them. Can you verify this for me, please?

2

You should be able to cast to them fine. It is true that they are of class type node but there should be no problem using static_cast on them. here’s and example. This code wasn’t tested but should work

        #include "HelloWorldScene.h"
        #include "cocostudio/CocoStudio.h"
        #include "ui/CocosGUI.h"
        
        USING_NS_CC;
        
        using namespace cocostudio::timeline;

        // Create an anonymous namespace for you nodes inside the csb file 
       namespace {
            cocos2d::ui:PageView* pageview_ = nullptr;
        }
        
        Scene* HelloWorld::createScene()
        {
            // 'scene' is an autorelease object
            auto scene = Scene::create();
            
            // 'layer' is an autorelease object
            auto layer = HelloWorld::create();
        
            // add layer as a child to scene
            scene->addChild(layer);
        
            // return the scene
            return scene;
        }
        
        // on "init" you need to initialize your instance
        bool HelloWorld::init()
        {
            //////////////////////////////
            // 1. super init first
            if ( !Layer::init() )
            {
                return false;
            }
            
            auto rootNode = CSLoader::createNode("MainScene.csb");
            addChild(rootNode);

            pageview_ = static_cast<cocos2d::ui::PageView*>(rootNode->getChildByName("page_view"));
        
            return true;
        }

if static_cast doesn’t work, you can also use dynamic_cast or reinterpret_cast as a last resort.

PS: A Panel widget in Cocos Studio = cocos2d::ui::Layout*
PSS: A Label Widget in Cocos Studio = cocos2d::ui::Text*

3

Thank you for your reply. I know I should be able to cast them back (used to work on v3.3). But I have run debugged and found that they REAL Node objects, not Node pointer to Widget objects, so any cast will return NULL

4

what do you mean by “real” Node objects? They should be of type cocos2d::Node*

Here a snippit of code from the cocosstudio 3d test:

    CSSceneSkyBoxTest::CSSceneSkyBoxTest() {
    auto node = CSLoader::createNode("SkyBox.csb");

    addChild(node);

    _camera = static_cast<Camera*>(node->getChildByName("UserCamera_0"));

   ...
}

If your not doing somthing similar to this, then I think you maybe doing somthing wrong. Did you forget to call addChild(node);?

5

If your just mainly asking why they don’t come in as thier type from CSLoader::createNode(std::string filename) then I think it’s because it’s easier to manage for them. Also, Most people with a heavy CocosStudio Workflow barely need to edit anything @ run time so you don’t need to full object of to be loaded into memory. That would be my guess anyways.