Hi all. I have to create a class of dots. I have a Dot.h file:

    #include "cocos2d.h"
    USING_NS_CC;
    class Dot : public cocos2d::DrawNode{
    public:
        virtual bool init();
        CREATE_FUNC(Dot);
    private:
        bool circumstanceA = 1;
        bool circumstanceB = 0;
    };

and a Dot.cpp file:

    #include "Dot.h"
    USING_NS_CC;
    
    bool Dot::init()
    {
        if ( !DrawNode::init() )
            return false;
        Size visibleSize = Director::getInstance()->getVisibleSize();
        Vec2 origin = Director::getInstance()->getVisibleOrigin();
        
        drawDot(Vec2((arc4random() % (int)(visibleSize.width - visibleSize.width / 6)) + visibleSize.width / 12, (arc4random() % (int)(visibleSize.width - visibleSize.width / 3.5)) + visibleSize.width / 7), 0, Color4F(1,1,1,1));
            auto scale = ScaleTo::create(0.5, (visibleSize.height / 6) + (arc4random() % (int)(visibleSize.height / 15)) - visibleSize.height /30);
        auto scale_ease = EaseBackOut::create(scale->clone());
        this->runAction(scale_ease);
        
        return true;
    }

But when I try to create a new Dot from the current scene:

    auto newDot = Dot::create();
    this->addChild(newDot, 1);

no dot is displayed in the simulator.
I tried also creating it from the scene, like

    auto prova = DrawNode::create();
    prova->drawDot(Vec2(visibleSize.width / 2, visibleSize.height / 2), 50, Color4F::WHITE);
    this->addChild(prova, 1);

but the result is the same :/

Where am I mistaking?

I tried also with DrawLine, nothing is being displayed.

I'm kinda new to this cocos2d-x syntax, so any help would be very appreciated :)

Many thanks!

ps: Is it correct to use

    this->runAction(scale_ease);

from the object's class init() function?