axmol/templates/cpp-template-default/Classes/HelloWorldScene.cpp

/****************************************************************************
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
 Copyright (c) 2021 Bytedance Inc.

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#include "HelloWorldScene.h"

USING_NS_CC;

// Print useful error message instead of segfaulting when files are not there.
static void problemLoading(const char* filename)
{
    printf("Error while loading: %s\n", filename);
    printf(
        "Depending on how you compiled you might have to add 'Resources/' in front of filenames in "
        "HelloWorldScene.cpp\n");
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if (!Scene::init())
    {
        return false;
    }

    auto visibleSize = Director::getInstance()->getVisibleSize();
    auto origin      = Director::getInstance()->getVisibleOrigin();
    auto safeArea    = Director::getInstance()->getSafeAreaRect();
    auto safeOrigin  = safeArea.origin;

    /////////////////////////////
    // 2. add a menu item with "X" image, which is clicked to quit the program
    //    you may modify it.

    // add a "close" icon to exit the progress. it's an autorelease object
    auto closeItem = MenuItemImage::create("CloseNormal.png", "CloseSelected.png",
                                           CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));

    if (closeItem == nullptr || closeItem->getContentSize().width <= 0 || closeItem->getContentSize().height <= 0)
    {
        problemLoading("'CloseNormal.png' and 'CloseSelected.png'");
    }
    else
    {
        float x = safeOrigin.x + safeArea.size.width - closeItem->getContentSize().width / 2;
        float y = safeOrigin.y + closeItem->getContentSize().height / 2;
        closeItem->setPosition(Vec2(x, y));
    }

    // create menu, it's an autorelease object
    auto menu = Menu::create(closeItem, NULL);
    menu->setPosition(Vec2::ZERO);
    this->addChild(menu, 1);

    /////////////////////////////
    // 3. add your codes below...

    // add a label shows "Hello World"
    // create and initialize a label

    auto label = Label::createWithTTF("Hello World", "fonts/Marker Felt.ttf", 24);
    if (label == nullptr)
    {
        problemLoading("'fonts/Marker Felt.ttf'");
    }
    else
    {
        // position the label on the center of the screen
        label->setPosition(
            Vec2(origin.x + visibleSize.width / 2, origin.y + visibleSize.height - label->getContentSize().height));

        // add the label as a child to this layer
        this->addChild(label, 1);
    }

    // add "HelloWorld" splash screen"
    auto sprite = Sprite::create("HelloWorld.png"sv);
    if (sprite == nullptr)
    {
        problemLoading("'HelloWorld.png'");
    }
    else
    {
        // position the sprite on the center of the screen
        sprite->setPosition(Vec2(visibleSize.width / 2 + origin.x, visibleSize.height / 2 + origin.y));

        // add the sprite as a child to this layer
        this->addChild(sprite, 0);
        auto drawNode = DrawNode::create();
        drawNode->setPosition(Vec2(0, 0));
        addChild(drawNode);

        drawNode->drawRect(safeArea.origin, safeArea.origin + safeArea.size, Color4F::BLUE);
    }

    return true;
}

void HelloWorld::menuCloseCallback(Ref* sender)
{
    // Close the cocos2d-x game scene and quit the application
    Director::getInstance()->end();

    /*To navigate back to native iOS screen(if present) without quitting the application  ,do not use
     * Director::getInstance()->end() as given above,instead trigger a custom event created in RootViewController.mm
     * as below*/

    // EventCustom customEndEvent("game_scene_close_event");
    //_eventDispatcher->dispatchEvent(&customEndEvent);
}