cocos2d-x 键盘事件 EventListenerKeyboard 吞噬问题

发布网友 发布时间：2022-05-04 23:18

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懂视网 时间：2022-05-05 03:40

1、触摸事件：定义NewEventDispatcher类，用于声明触摸事件 （1）单点触摸事件，在NewEventDispatcher.h中添加如下代码： //NewEventDispatcher.h#include cocos2d.hUSING_NS_CC;using namespace cocos2d;class TouchableSpriteTest : public Scene{public:

1、触摸事件：定义NewEventDispatcher类，用于声明触摸事件

（1）单点触摸事件，在NewEventDispatcher.h中添加如下代码：

//NewEventDispatcher.h
#include "cocos2d.h"
USING_NS_CC;
using namespace cocos2d;

class TouchableSpriteTest : public Scene
{
public:
 CREATE_FUNC(TouchableSpriteTest);//首先执行new操作，然后执行init函数
 virtual bool init();
 
};

//NewEventDispatcher.cpp
bool TouchableSpriteTest::init()
{
 bool bRet = false;
 do{
 CC_BREAK_IF(!Scene::init());
 auto origin = Director::getInstance()->getVisibleOrigin();
 log("origin.x = %f, origin.y = %f",origin.x,origin.y);
 auto size = Director::getInstance()->getVisibleSize();
 log("size.w = %f, size.h = %f",size.width,size.height);
 
 auto containerForSprite1 = Node::create();
 
 auto sprite1 = Sprite::create("CyanSquare.png");
 sprite1->setPosition(origin+Vec2(size.width/2,size.height/2) + Vec2(-80,80));
 containerForSprite1->addChild(sprite1,10);
 addChild(containerForSprite1,11);
 
 auto sprite2 = Sprite::create("MagentaSquare.png");
 sprite2->setPosition(origin + Vec2(size.width/2, size.height/2));
 addChild(sprite2,20);
 
 auto sprite3 = Sprite::create("YellowSquare.png");
 sprite3->setPosition(Vec2(0,0));
 addChild(sprite3,1);
 //1.创建侦听事件
 auto listener1 = EventListenerTouchOneByOne::create();
 listener1->setSwallowTouches(true);
 //2.重载onTouch*函数，使用的时lambda方法，如果使用函数重载，需要在.h文件中声明。        //或者在TouchableTest的头文件中声明onTouchBegan的函数重载；          //listener1->onTouchBegan = CC_CALLBACK_2(TouchableSpriteTest::onTouchBegan,this);      //在TouchableTest的cpp文件中重新定义。
 listener1->onTouchBegan = [](Touch* touch, Event* event)          {
  auto target = static_cast(event->getCurrentTarget());
  log("target.Tag = %d",target->getTag());
  auto locationInNode = target->convertToNodeSpace(touch->getLocation());
  auto s = target->getContentSize();
  auto rect = Rect(0,0,s.width,s.height);
  
  if(rect.containsPoint(locationInNode))
  {
  log("sprite begin...x = %f,y = %f",locationInNode.x,locationInNode.y);
  target->setOpacity(180);
  return true;
  }
  return false;
 };
 
 listener1->onTouchMoved = [](Touch* touch,Event* event){
  auto target = static_cast(event->getCurrentTarget());
  log("target.Tag = %d",target->getTag());
  target->setPosition(target->getPosition() + touch->getDelta());
  log("target.x = %lf, target.y = %lf
 touch.x = %lf,touch.y = %lf",target->getPosition().x,target->getPosition().y,touch->getDelta().x,touch->getDelta().y);
 };
 
 listener1->onTouchEnded = [=](Touch* touch,Event* event){
  auto target = static_cast(event->getCurrentTarget());
  log("sprite onTouchedEnded..");
  target->setOpacity(255);
  if(target == sprite2)
  {
  containerForSprite1->setLocalZOrder(100);
  }
  else if(target == sprite1)
  {
  containerForSprite1->setLocalZOrder(0);
  }
 };
 //3.加入事件侦听序列
 _eventDispatcher->addEventListenerWithSceneGraphPriority(listener1, sprite1);
 _eventDispatcher->addEventListenerWithSceneGraphPriority(listener1->clone(), sprite2);
 _eventDispatcher->addEventListenerWithSceneGraphPriority(listener1->clone(), sprite3);
 bRet = true;
 }while(0);
 return bRet;
}

在NewEventDispatcher.h中添加如下代码：

//.h
class CustomEvent : public Scene
{
public:
 CREATE_FUNC(CustomEvent);
 virtual bool init();
private:
 EventListenerCustom* _listener1;//自定义事件
 EventListenerCustom* _listener2;
};

//.cpp
bool CustomEvent::init()
{
 bool bRet = false;
 do{
 CC_BREAK_IF(!Scene::init());
 
 auto origin = Director::getInstance()->getVisibleOrigin();
 auto size = Director::getInstance()->getVisibleSize();
 
 MenuItemFont::setFontSize(20);
 
 auto statusLabel = Label::createWithSystemFont("No custom event 1 received!", "", 20);
 statusLabel->setPosition(origin + Vec2(size.width/2, size.height-90));
 addChild(statusLabel);
 //1.创建侦听事件及回调函数，该自定义事件监听的时game_custom_event1事件
 _listener1 = EventListenerCustom::create("game_custom_event1", [=](EventCustom* event){
  std::string str("Custom event 1 received, ");
  char* buf = static_cast(event->getUserData());
  str += buf;
  str += " times";
  statusLabel->setString(str.c_str());
 });
 //2.将侦听事件加入事件侦听序列
 _eventDispatcher->addEventListenerWithFixedPriority(_listener1, 1);
 //设置MenuItem，名字叫Send Custom Event 1，触发的事件是lambda函数，点击“Send Custom Event 1”，触发
 auto sendItem = MenuItemFont::create("Send Custom Event 1", [=](Ref* sender){
  static int count = 0;
  ++count;
  char* buf = new char[10];
  sprintf(buf, "%d", count);
  EventCustom event("game_custom_event1");//创建自定义事件，名字为“game_custom_event1”
  event.setUserData(buf);
  _eventDispatcher->dispatchEvent(&event);//将自定义事件加入侦听，触发事件，
  CC_SAFE_DELETE_ARRAY(buf);
 });
 sendItem->setPosition(origin + Vec2(size.width/2, size.height/2));

 
 auto statusLabel2 = Label::createWithSystemFont("No custom event 2 received!", "", 20);
 statusLabel2->setPosition(origin + Vec2(size.width/2, size.height-120));
 addChild(statusLabel2);
 //同_listener1
 _listener2 = EventListenerCustom::create("game_custom_event2", [=](EventCustom* event){
  std::string str("Custom event 2 received, ");
  char* buf = static_cast(event->getUserData());
  str += buf;
  str += " times";
  statusLabel2->setString(str.c_str());
 });
 //同_listener1
 _eventDispatcher->addEventListenerWithFixedPriority(_listener2, 1);
 
 auto sendItem2 = MenuItemFont::create("Send Custom Event 2", [=](Ref* sender){
  static int count = 0;
  ++count;
  char* buf = new char[10];
  sprintf(buf, "%d", count);
  EventCustom event("game_custom_event2");
  event.setUserData(buf);
  _eventDispatcher->dispatchEvent(&event);
  CC_SAFE_DELETE_ARRAY(buf);
 });
 sendItem2->setPosition(origin + Vec2(size.width/2, size.height/2 - 40));
 
 auto menu = Menu::create(sendItem, sendItem2, nullptr);
 menu->setPosition(Vec2(0, 0));
 menu->setAnchorPoint(Vec2(0, 0));
 addChild(menu, -1);
 
 bRet = true;
 }while(0);
 return bRet;
}

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