Cocos2d-x之KeyboardEvent键盘事件

Cocos2d-x之KeyboardEvent键盘事件

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在游戏所在目录的Classes目录下创建以下两个文件：KeyboardScene.h:

#include "cocos2d.h"class KeyboardScene : public cocos2d::Layer{public: static cocos2d::Scene* createScene(); virtual bool init(); CREATE_FUNC(KeyboardScene);};

KeyboardScene.cpp:

//// Created by kyun on 20-3-19.//#include "KeyboardScene.h"USING_NS_CC;Scene* KeyboardScene::createScene() { auto scene = Scene::create(); auto layer = KeyboardScene::create(); scene->addChild(layer); return scene;}bool KeyboardScene::init() { if( !Layer::init()){ return false; } // 创建一个精灵 auto sprite = Sprite::create("HelloWorld.png"); // 将精灵定位到场景中央 sprite->setPosition(this->getContentSize().width/2,this->getContentSize().height/2); this->addChild(sprite,0); // 创建键盘- auto eventListener = EventListenerKeyboard::create(); // 定义键盘按下处理函数 eventListener->onKeyPressed = [](EventKeyboard::KeyCode keyCode, Event* event){ Vec2 loc = event->getCurrentTarget()->getPosition(); switch (keyCode){ // 按下向左箭头，或A键 case EventKeyboard::KeyCode ::KEY_LEFT_ARROW: case EventKeyboard::KeyCode ::KEY_A: // 将与事件绑定的精灵向左移，按一下，移一下 event->getCurrentTarget()->setPosition(--loc.x,loc.y); break; // 按下向右箭头，或D键 case EventKeyboard::KeyCode ::KEY_RIGHT_ARROW: case EventKeyboard::KeyCode ::KEY_D: // 将与事件绑定的精灵向右移，按一下，移一下 event->getCurrentTarget()->setPosition(++loc.x,loc.y); break; // 按下向上箭头，或W键 case EventKeyboard::KeyCode ::KEY_UP_ARROW: case EventKeyboard::KeyCode ::KEY_W: // 将与事件绑定的精灵向上移，按一下，移一下 event->getCurrentTarget()->setPosition(loc.x,++loc.y); break; // 按下向下箭头，或S键 case EventKeyboard::KeyCode ::KEY_DOWN_ARROW: case EventKeyboard::KeyCode ::KEY_S: // 将与事件绑定的精灵向下移，按一下，移一下 event->getCurrentTarget()->setPosition(loc.x,--loc.y); break; } }; // 将事件-与精灵进行绑定 this->_eventDispatcher->addEventListenerWithSceneGraphPriority(eventListener,sprite);}

修改根目录下的CMakeLists.txt文件：

# add cross-platforms source files and header files list(APPEND GAME_SOURCE Classes/AppDelegate.cpp Classes/KeyboardScene.cpp )list(APPEND GAME_HEADER Classes/AppDelegate.h Classes/KeyboardScene.h )

执行cmake命令：

~/Desktop/Games/MyGame/build/linux-build$ cmake ../..

编译源码：

~/Desktop/Games/MyGame/build/linux-build$ make -j 4

运行游戏：

~/Desktop/Games/MyGame/build/linux-build$ cd bin/MyGame~/Desktop/Games/MyGame/build/linux-build/bin/MyGame$ ./MyGame

测试：

通过键盘WASD四个键或四个方向键来移动精灵。

谢谢阅读！

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