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 Sprite*>::iterator it; for (it = _arr.begin(); it != _arr.end(); ++it) { Sprite* s = *it; } for (auto 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."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 "key is %s,value is %s",it->first.c_str(),it->second.asstring().c_str()); "............................end"); vm["中文"] = "bbb"; "........start walk over"); //遍历 for (auto it = vm.begin(); it != vm.end();++it) { c_str()); } "..........................end"); 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

__T04Label_H__ #define __T04Label_H__ #include T04Label :public T04Label); bool 编写：T04Label.cpp

"T04Label.h" bool T04Label::init(); { Label* label = Label::createWithCharMap("fonts/Labelatlas.png",24,32,21); font-family:新宋体; font-size:9.5pt">'0'); label->setString("12345"); addChild(label); label->setPosition(winSize.width / 2,winSize.height / 2); } #if 0 createWithBMFont(); createWithSystemFont("aaa",21); font-family:新宋体; font-size:9.5pt">"Arial",24); 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

__T05Touch_H__ #define __T05Touch_H__ #include T05Touch :public Layer { public: T05Touch); bool init(); void TouchEnded(Touch*,Event *); }; #endif

编写：T05Touch.cpp

"T05Touch.h" bool T05Touch::init(); { // 一般使用这种方式，和一个Node相关联 EventListenerTouchOneByOne* ev = EventListenerTouchOneByOne::create(); ev->onTouchBegan = [](Event*){return true; }; // ev->onTouchEnded = [](Touch*,Event*){}; ev->onTouchEnded = CC_CALLBACK_2(TouchEnded,this); _eventdispatcher->addEventListenerWithSceneGraPHPriority(ev,this); } #if 0 { // 固有优先级的方式使用比较少 create(); ev->setSwallowtouches(true); ev->onTouchBegan = [](Event*){"Touch Begin"); return true; }; _eventdispatcher->addEventListenerWithFixedPriority(ev,-128); } #endif { Sprite* node = Sprite::create(); addChild(node); Touch* touch,133); font-family:新宋体; font-size:9.5pt">Event*){ //通过touch->getLocation()的方式获得被选中的点的位置 Vec2 pt = touch->getLocation(); "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->node); } { EventListenerTouchAllAtOnce* ev = EventListenerTouchAllAtOnce::create(); ev->ontouchesBegan = [](const std::vector<Touch*>&,133); font-family:新宋体; font-size:9.5pt">Event*){}; _eventdispatcher->this); } return true; } void Event*){ }