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

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

 https://axmolengine.github.io/

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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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_AX;

static ax::Size designResolutionSize = ax::Size(1280, 720);
static ax::Size smallResolutionSize  = ax::Size(480, 320);
static ax::Size mediumResolutionSize = ax::Size(1024, 768);
static ax::Size largeResolutionSize  = ax::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 (AX_TARGET_PLATFORM == AX_PLATFORM_WIN32) || (AX_TARGET_PLATFORM == AX_PLATFORM_MAC) || \
    (AX_TARGET_PLATFORM == AX_PLATFORM_LINUX)
        glView = GLViewImpl::createWithRect(
            "HelloCpp", ax::Rect(0, 0, designResolutionSize.width, designResolutionSize.height));
#else
        glView = GLViewImpl::create("HelloCpp");
#endif
        director->setOpenGLView(glView);
    }

    // turn on display FPS
    director->setStatsDisplay(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
}