1.Cocos2dx 3.2中vector,ValueMap,Touch触摸时间的使用.iconv字符编解码



1. Cocos2dx3.2以后使用Vector<T>代替了CCArray。案例如下：

头文件：T02Vector.h

#ifndef __T02Vector_H__ #define __T02Vector_H__   #include "T32.h"   class T02Vector : public Layer { public:     CREATE_FUNC(T02Vector);       //Cocos2dx3.2以后使用Vector代替了CCArray     Vector<Sprite*> _arr;       bool init(); };   #endif

编写：T02Vector.cpp

#include "T02Vector.h"   //in cocos3.2 Vector代替CCArray //如果不是Ref的子类，那不能用Vector，应该用std::vector bool T02Vector::init() {     Layer::init();     Sprite* sprite = Sprite::create();         //增加元素     _arr.pushBack(sprite);       //遍历     Vector<Sprite*>::iterator it;     for (it = _arr.begin(); it != _arr.end(); ++it)     {         Sprite* s = *it;     }     for (auto it = _arr.begin(); it != _arr.end();++it)     {          }       for (auto it: _arr)     {       }       //从后往前遍历     for (auto it = _arr.rbegin(); it != _arr.rend();++it)     {       }       //删除     _arr.eraseObject(sprite);       return true; }

2 Map的用法（注意字符编解码的第三方库有：iconv，cocos中集成的有这方面的功能）

头文件：T03Map.h

#ifndef __T03Map_H__ #define __T03Map_H__   #include "T32.h" class T03Map : public Layer{ public:     CREATE_FUNC(T03Map);     bool init(); };   #endif

编写：T03Map.cpp

#include "T03Map.h"   /*      ValueMap是用来代替cocos2d.x的CCDictionary */ bool T03Map::init() {     Layer::init();       //内容的加载     ValueMap& vm = FileUtils::getInstance()->getValueMapFromFile("about.xml");         //CCDictionary* dict = CCDictionary::createWithContentsOfFile("about.xml");     //const CCString* x = dict->valueForKey("x");     //x->intValue();       //查找     auto it = vm.find("aaa");     if (it == vm.end())     {         CCLog("can not find aaa");     }       it = vm.find("people3");     it->first;   //key:的类型是std::string     it->second;  //value:的类型是Value，相对cocos3.2.3的CCString     CCLog("key is %s, value is %s", it->first.c_str(), it->second.asString().c_str());       CCLog("............................end");       vm["中文"] = "bbb";       CCLog("........start walk over");     //遍历     for (auto it = vm.begin(); it != vm.end();++it)     {         CCLog("key is %s,value is %s",it->first.c_str(),it->second.asString().c_str());     }     CCLog("..........................end");       FileUtils::getInstance()->writeToFile(vm, "new.xml");   #if 0     // C++11     for (auto it : vm)     {         it.first;         it.second;     }       // 插入     vm["aa"] = 10;       // 访问，这种访问有副作用，如果bb节点不存在，它会创建一个bb节点     Value& v = vm["bb"];     v = 100;       vm["bb"] = false; #endif     return true; }

用到的about.xml如下：

<?xml version="1.0" encoding="UTF-8" ?> <plist> <dict> <key>people1</key> <string>许佳音工作室出品</string> <key>people2</key> <string>总监：许佳音</string> <key>people3</key> <string>程序：姜博</string> <key>people4</key> <string>美术：马俊</string> <key>people5</key> <string>改编：班级</string> </dict> </plist>

3  T04Label的用法

头文件：T04Label.h

#ifndef __T04Label_H__ #define __T04Label_H__   #include "T32.h" class T04Label :public Layer{ public:     CREATE_FUNC(T04Label);       bool init(); };   #endif

编写：T04Label.cpp

#include "T04Label.h"   bool T04Label::init() {     Layer::init();       {         Label* label = Label::createWithCharMap("fonts/Labelatlas.png", 24, 32, '0');         label->setString("12345");         addChild(label);         label->setPosition(winSize.width / 2, winSize.height / 2);     }   #if 0     Label* label = Label::createWithBMFont();     Label* label = Label::createWithSystemFont("aaa", "Arial", 24);     Label* label = Label::createWithTTF(""); #endif     //Label* label = Label::createWithTexture()     return true; }

运行结果：

3  T05Touch触摸事件的用法

头文件：T05Touch.h

#ifndef __T05Touch_H__ #define __T05Touch_H__   #include "T32.h" class T05Touch :public Layer { public:     CREATE_FUNC(T05Touch);       bool init();     void TouchEnded(Touch*,Event *); };   #endif

编写：T05Touch.cpp

#include "T05Touch.h"   bool T05Touch::init() {     Layer::init();       {         // 一般使用这种方式，和一个Node相关联         EventListenerTouchOneByOne* ev = EventListenerTouchOneByOne::create();         ev->onTouchBegan = [](Touch*, Event*){return true; };         //  ev->onTouchEnded = [](Touch*, Event*){};         ev->onTouchEnded = CC_CALLBACK_2(T05Touch::TouchEnded, this);           _eventDispatcher->addEventListenerWithSceneGraphPriority(ev, this);     }   #if 0     {         // 固有优先级的方式使用比较少         EventListenerTouchOneByOne* ev = EventListenerTouchOneByOne::create();         ev->setSwallowTouches(true);           ev->onTouchBegan = [](Touch*, Event*){CCLog("Touch Begin"); return true; };           _eventDispatcher->addEventListenerWithFixedPriority(ev, -128);     } #endif       {         Sprite* node = Sprite::create();         addChild(node);           EventListenerTouchOneByOne* ev = EventListenerTouchOneByOne::create();         ev->onTouchBegan = [](Touch* touch, Event*){             //通过touch->getLocation()的方式获得被选中的点的位置             Vec2 pt = touch->getLocation();             CCLog("Sprite is touched, pt.x=%f, pt.y=%f", pt.x, pt.y);             return true;           };         //  ev->onTouchEnded = [](Touch*, Event*){};         // ev->onTouchEnded = CC_CALLBACK_2(T05Touch::TouchEnded, this);           _eventDispatcher->addEventListenerWithSceneGraphPriority(ev, node);       }       {         EventListenerTouchAllAtOnce* ev = EventListenerTouchAllAtOnce::create();         ev->onTouchesBegan = [](const std::vector<Touch*>&, Event*){};         _eventDispatcher->addEventListenerWithSceneGraphPriority(ev, this);     }       return true; }   void T05Touch::TouchEnded(Touch*, Event*){ }