场景对象只需要在源文件中创建就好了,不需要再头文件中添加场景变量,之前没有在WwwScene.cpp中创建场景对象。
但还有另一个问题,在HelloWorldScene.cpp文件中无法同时使用两个按钮菜单里的menuCloseCallback回调函数。诺使用两个就会显示重复。
HelloWorldScene.cpp文件的内容如下,该如何修改?
#include “HelloWorldScene.h”
#include “WwwScene.h”
USING_NS_CC;
Scene* HelloWorld::createScene()
{
return HelloWorld::create();
}
// on “init” you need to initialize your instance
bool HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !Scene::init() )
{
return false;
}
Size visibleSize = Director::getInstance()->getVisibleSize();
Vec2 origin = Director::getInstance()->getVisibleOrigin();
/////////////////////////////
// 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));
closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,
origin.y + closeItem->getContentSize().height/2));
// create menu, it's an autorelease object
auto menu = Menu::create(closeItem, NULL);
menu->setPosition(Vec2::ZERO);
this->addChild(menu, 1);
///////////////////////////////
auto closeItem1 = MenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));
closeItem1->setPosition(Vec2(origin.x + visibleSize.width/2,
origin.y + closeItem1->getContentSize().height/2));
// create menu, it's an autorelease object
auto menu1 = Menu::create(closeItem1, NULL);
menu1->setPosition(Vec2::ZERO);
this->addChild(menu1, 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);
// 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");
// 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);
return true;
}
void HelloWorld::menuCloseCallback(Ref* pSender)
{
this->scheduleOnce(CC_SCHEDULE_SELECTOR(WwwScene::popScene), 2);
}
void HelloWorld::menuCloseCallback(Ref* pSender)
{
this->scheduleOnce(CC_SCHEDULE_SELECTOR(WwwScene::popScene), 2);
}