Creating sliders
In this recipe, we will explain the slider. The slider will be used for tasks such as changing the volume of the sound or music. Cocos2d-x has a Slider class for it. If we use this class, we can create a slider easily.
Getting ready
So, let's prepare the images of the slider before we start. Please add these images in the Resouces/res folder.
sliderTrack.png: Background of the slider
sliderThumb.png: Image to move the slider
How to do it...
Let's create a slider by using the Slider class. First, you will generate a slider instance by using the sliderTrack.png image and the sliderThumb.png image. You will also specify the callback function as a lambda expression by using the addEventListener method when the slider value is changed.
auto slider = ui::Slider::create("res/sliderTrack.png",
"res/sliderThumb.png");
slider->setPosition(size/2);
this->addChild(slider);
slider->addEventListener([](Ref* sender, ui::Slider::EventType
type){
auto slider = dynamic_cast<ui...
