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

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

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#include "AppDelegate.h"
#include "HelloWorldScene.h"

#define USE_AUDIO_ENGINE 1

#if USE_AUDIO_ENGINE
#    include "audio/AudioEngine.h"
#endif

USING_NS_CC;

static cocos2d::Size designResolutionSize = cocos2d::Size(1280, 720);
static cocos2d::Size smallResolutionSize  = cocos2d::Size(480, 320);
static cocos2d::Size mediumResolutionSize = cocos2d::Size(1024, 768);
static cocos2d::Size largeResolutionSize  = cocos2d::Size(2048, 1536);

AppDelegate::AppDelegate() {}

AppDelegate::~AppDelegate() {}

// if you want a different context, modify the value of glContextAttrs
// it will affect all platforms
void AppDelegate::initGLContextAttrs()
{
    // set OpenGL context attributes: red,green,blue,alpha,depth,stencil,multisamplesCount
    GLContextAttrs glContextAttrs = {8, 8, 8, 8, 24, 8, 0};

    GLView::setGLContextAttrs(glContextAttrs);
}

// if you want to use the package manager to install more packages,
// don't modify or remove this function
static int register_all_packages()
{
    return 0;  // flag for packages manager
}

bool AppDelegate::applicationDidFinishLaunching()
{
    // initialize director
    auto director = Director::getInstance();
    auto glview   = director->getOpenGLView();
    if (!glview)
    {
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32) || (CC_TARGET_PLATFORM == CC_PLATFORM_MAC) || \
    (CC_TARGET_PLATFORM == CC_PLATFORM_LINUX)
        glview = GLViewImpl::createWithRect(
            "HelloCpp", cocos2d::Rect(0, 0, designResolutionSize.width, designResolutionSize.height));
#else
        glview = GLViewImpl::create("HelloCpp");
#endif
        director->setOpenGLView(glview);
    }

    // turn on display FPS
    director->setDisplayStats(true);

    // set FPS. the default value is 1.0/60 if you don't call this
    director->setAnimationInterval(1.0f / 60);

    // Set the design resolution
    glview->setDesignResolutionSize(designResolutionSize.width, designResolutionSize.height,
                                    ResolutionPolicy::NO_BORDER);
    auto frameSize = glview->getFrameSize();
    // if the frame's height is larger than the height of medium size.
    if (frameSize.height > mediumResolutionSize.height)
    {
        director->setContentScaleFactor(MIN(largeResolutionSize.height / designResolutionSize.height,
                                            largeResolutionSize.width / designResolutionSize.width));
    }
    // if the frame's height is larger than the height of small size.
    else if (frameSize.height > smallResolutionSize.height)
    {
        director->setContentScaleFactor(MIN(mediumResolutionSize.height / designResolutionSize.height,
                                            mediumResolutionSize.width / designResolutionSize.width));
    }
    // if the frame's height is smaller than the height of medium size.
    else
    {
        director->setContentScaleFactor(MIN(smallResolutionSize.height / designResolutionSize.height,
                                            smallResolutionSize.width / designResolutionSize.width));
    }

    register_all_packages();

    // create a scene. it's an autorelease object
    auto scene = utils::createInstance<HelloWorld>();

    // run
    director->runWithScene(scene);

    return true;
}

// This function will be called when the app is inactive. Note, when receiving a phone call it is invoked.
void AppDelegate::applicationDidEnterBackground()
{
    Director::getInstance()->stopAnimation();

#if USE_AUDIO_ENGINE
    AudioEngine::pauseAll();
#endif
}

// this function will be called when the app is active again
void AppDelegate::applicationWillEnterForeground()
{
    Director::getInstance()->startAnimation();

#if USE_AUDIO_ENGINE
    AudioEngine::resumeAll();
#endif
}