功夫小子实践开发-菜单场景之游戏秘籍场景的分析和实现

秘籍场景相对来说就比较简单，没有新的知识点。 有一点不好理解的就是代码里面有用到 lambda表达式的使用，如果有什么问题可以参考上一篇。
MijiLayer.h

#ifndef __MijiLayer_H__
#define __MijiLayer_H__

#include "cocos2d.h"
USING_NS_CC;

class MijiLayer: public Layer
{
public:
static Scene* createScene();
virtual bool init();
CREATE_FUNC(MijiLayer);

Sprite* spriteBG;
Sprite* interface_1;
Sprite* interface_2;

bool flag;
};

#endif

MijiLayer.cpp

#include "MijiLayer.h"
#include "StartLayer.h"
#include "GlobalDefine.h"
#include "SplashLayer.h"

Scene* MijiLayer::createScene()
{
Scene* scene = Scene::create();
MijiLayer* layer = MijiLayer::create();
scene->addChild(layer);
return scene;
}

bool MijiLayer::init()
{
if(!Layer::init())
{
return false;
}
flag = true;//判断是否翻页
// 背景
spriteBG = Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("CheatsBackground.png"));
spriteBG->setPosition(WINSIZE.width / 2, WINSIZE.height / 2);
this->addChild(spriteBG);

// 秘籍技能界面
interface_1 = Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("CheatsInterface1.png"));
interface_2 = Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("CheatsInterface2.png"));
interface_1->setPosition(WINSIZE.width / 2, WINSIZE.height / 2 - 10);
interface_1->setVisible(true);
interface_2->setPosition(WINSIZE.width / 2, WINSIZE.height / 2 - 10);
interface_2->setVisible(false);
spriteBG->addChild(interface_1);
spriteBG->addChild(interface_2);

// 关闭按钮
auto closeItem = MenuItemSprite::create(
Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("OffNormal.png")),
Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("offSelected.png")),
[](Ref * ref){
// 切换主界面场景
PLAYEFFECT;
Director::getInstance()->replaceScene(StartLayer::createScene()); });
closeItem->setPosition(WINSIZE.width-164, WINSIZE.height-132);

// 点击切换按钮
auto nextRightItem = MenuItemSprite::create(
Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("PageTurnNormal.png")),
Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("PageTurnSelected.png")),
[&](Ref * ref){
PLAYEFFECT;
// 切换秘籍
if (flag)
{
interface_2->setVisible(true);
flag = false;
}
else
{
interface_2->setVisible(false);
flag = true;
}
 });
nextRightItem->setPosition(WINSIZE.width - 55, WINSIZE.height / 2 - 14);

// 点击切换按钮
auto nor = Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("PageTurnNormal.png"));
nor->setFlippedX(true);
auto sel = Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->getSpriteFrameByName("PageTurnSelected.png"));
sel->setFlippedX(true);
auto nextLeftItem = MenuItemSprite::create(nor, sel,
[&](Ref * ref){
PLAYEFFECT;
// 切换秘籍
if (flag)
{
interface_2->setVisible(true);
flag = false;
}
else
{
interface_2->setVisible(false);
flag = true;
}
});
nextLeftItem->setPosition(55, WINSIZE.height / 2 - 14);

auto menu = Menu::create(closeItem, nextRightItem, nextLeftItem, NULL);
menu->setPosition(Point::ZERO);

spriteBG->addChild(menu);

return true;
}