Cocos2d-x3.2 iOS下开启多点触控

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iOS下默认是不开启多点触控的，我们要想要使用需要做如下的内容：

iOS文件夹下：AppController.mm

需要加一行代码：

 //  只需要新增这样一行代码就可以使用多点触控啦。    [eaglView setMultipleTouchEnabled:YES];

具体位置见下面：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {        // Override point for customization after application launch.    // Add the view controller's view to the window and display.    window = [[UIWindow alloc] initWithFrame: [[UIScreen mainScreen] bounds]];    // Init the CCEAGLView    CCEAGLView *eaglView = [CCEAGLView viewWithFrame: [window bounds]                                     pixelFormat: kEAGLColorFormatRGBA8                                     depthFormat: GL_DEPTH24_STENCIL8_OES                              preserveBackbuffer: NO                                      sharegroup: nil                                   multiSampling: NO                                 numberOfSamples: 0];    // Use RootViewController manage CCEAGLView     _viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];    _viewController.wantsFullScreenLayout = YES;    _viewController.view = eaglView;                //  只需要新增这样一行代码就可以使用多点触控啦。    [eaglView setMultipleTouchEnabled:YES];            // Set RootViewController to window    if ( [[UIDevice currentDevice].systemVersion floatValue] < 6.0)    {        // warning: addSubView doesn't work on iOS6        [window addSubview: _viewController.view];    }    else    {        // use this method on ios6        [window setRootViewController:_viewController];    }    [window makeKeyAndVisible];    [[UIApplication sharedApplication] setStatusBarHidden:true];    // IMPORTANT: Setting the GLView should be done after creating the RootViewController    cocos2d::GLView *glview = cocos2d::GLView::createWithEAGLView(eaglView);    cocos2d::Director::getInstance()->setOpenGLView(glview);    cocos2d::Application::getInstance()->run();    return YES;}

测试：

 auto listener1 = EventListenerTouchAllAtOnce::create();        listener1->setEnabled(true);        listener1->onTouchesBegan = [ = ](const std::vector<Touch*>& touches, Event* event)        {                        log("%lu",touches.size());                    };                _eventDispatcher->addEventListenerWithFixedPriority(listener1, 1);

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