Ogre嵌入MFC傻瓜完全教程（三）

经过前两两篇博文的讲解，我们已经完成了渲染工作，但只是渲染而没有交互性，本篇博文我们就来加上事件的处理方法。

首先我们需要为项目添加一个帧监听类：CMyFrameListener，为了直观，在这直接贴上代码

头文件

#pragma once
#include "ogre.h"
#include "OgreConfigFile.h"
#include "OgreFrameListener.h"
#include "OgreStringConverter.h"
#include "OIS.h"

#include "MyOgreApp.h"
#include <OISEvents.h>
#include <OISInputManager.h>
#include <OISKeyboard.h>
#include <OISMouse.h>

#include <SdkTrays.h>
#include <SdkCameraMan.h>
using namespace Ogre;
class CMyFrameListener: public FrameListener, public OIS::MouseListener,public Ogre::WindowEventListener, public OIS::KeyListener
{
public:
	CMyFrameListener(RenderWindow* win, Camera* cam, SceneManager *sceneMgr, Light* light);
	~CMyFrameListener(void);
	bool frameRenderingQueued(const Ogre::FrameEvent& evt);
	bool mouseMoved(const OIS::MouseEvent &e);
	bool mousePressed(const OIS::MouseEvent &e, OIS::MouseButtonID id); 
	bool mouseReleased(const OIS::MouseEvent &e, OIS::MouseButtonID id);
	bool keyPressed(const OIS::KeyEvent &e);
	bool keyReleased(const OIS::KeyEvent &e);

protected:

	Ogre::SceneManager *mSceneMgr;//场景管理器
	Ogre::SceneNode* mCamNode;//摄像机节点
	Ogre::Camera* mCamera;//摄像机
	Ogre::RenderWindow* mWindow;//渲染窗口
	Ogre::Light* light;//灯光

	OIS::Keyboard* mKeyboard;//键盘         
	OIS::Mouse* mMouse;      //鼠标    
	OIS::InputManager* mInputManager;//输入管理器 

//	OgreBites::SdkTrayManager* mTrayMgr;
	OgreBites::SdkCameraMan* mCameraMan;     // basic camera controller
	bool mRBtdown;
};

#include "StdAfx.h"
#include "MyFrameListener.h"

CMyFrameListener::CMyFrameListener(RenderWindow* win, Camera* cam, SceneManager *sceneMgr, Light *l): mMouse(0), 
	mKeyboard(0), mInputManager(0), mWindow(win), mCamera(cam), light(l)
{
	mRBtdown = false;
	mCamNode=cam->getParentSceneNode();
	mSceneMgr = sceneMgr;


	size_t windowHnd = 0;
	std::ostringstream windowHndStr;
	OIS::ParamList pl;


	mCameraMan = new OgreBites::SdkCameraMan(mCamera);  


	windowHnd = (size_t )AfxGetMainWnd()->GetSafeHwnd(); // 这里这个窗口句柄就是传入的MFC主窗口
	windowHndStr << windowHnd;
	// OIS的窗口必须要顶层窗口,所以只有传MFC的主窗口给他,传view就不行
	pl.insert(std::make_pair(std::string("WINDOW"), windowHndStr.str()));


	// 设置鼠标显示和非游戏独占,这样鼠标可以显示在屏幕上并可以移动到窗口外
	pl.insert(std::make_pair(std::string("w32_mouse"), std::string("DISCL_FOREGROUND" )));
	pl.insert(std::make_pair(std::string("w32_mouse"), std::string("DISCL_NONEXCLUSIVE")));
	// 键盘非游戏独占
	pl.insert(std::make_pair(std::string("w32_keyboard"), std::string("DISCL_FOREGROUND")));
	pl.insert(std::make_pair(std::string("w32_keyboard"), std::string("DISCL_NONEXCLUSIVE")));
	mInputManager = OIS::InputManager::createInputSystem(pl);


	mKeyboard = static_cast<OIS::Keyboard*>(mInputManager->createInputObject( OIS::OISKeyboard, true ));
	mMouse = static_cast<OIS::Mouse*>(mInputManager->createInputObject( OIS::OISMouse, true ));


	mMouse->setEventCallback(this);
	mKeyboard->setEventCallback(this);
}




CMyFrameListener::~CMyFrameListener(void)
{
	mInputManager->destroyInputObject(mMouse);
	mInputManager->destroyInputObject(mKeyboard);
	OIS::InputManager::destroyInputSystem(mInputManager);
	mInputManager = 0;
}




bool CMyFrameListener::frameRenderingQueued(const Ogre::FrameEvent& e){


	mMouse->capture();
	mKeyboard->capture();
	mCameraMan->frameRenderingQueued(e); 
	return true;
}


bool CMyFrameListener::mouseMoved(const OIS::MouseEvent &e)
{
	if (mRBtdown)
	{
		mCameraMan->injectMouseMove(e);
	}
	
	return true;
}


bool CMyFrameListener::mousePressed(const OIS::MouseEvent &e, OIS::MouseButtonID id)
{
//	mCameraMan->injectMouseDown(e, id);
	if (id == OIS::MB_Right)
	{
		mRBtdown = true;
	}
	
	return true;
}


bool CMyFrameListener::mouseReleased(const OIS::MouseEvent &e, OIS::MouseButtonID id)
{


//	mCameraMan->injectMouseUp(e, id);
	if (id == OIS::MB_Right)
	{
		mRBtdown = false;
	}
	return true;
}
//键盘响应
bool CMyFrameListener::keyPressed(const OIS::KeyEvent &e)
{
	
	mCameraMan->injectKeyDown(e);


	return true;
}


bool CMyFrameListener::keyReleased(const OIS::KeyEvent &e)
{
	 mCameraMan->injectKeyUp(e);
	return true;
}

下面修改CMyOgreApp类其能够响应鼠标和键盘的事件。

1、首先在MyOgreApp.h中添加监听类的引用

#include "MyFrameListener.h"

class CMyFrameListener* mListener;

void createFrameListener(void);

void CMyOgreApp::createFrameListener(void)
{
	mListener= new CMyFrameListener(mWindow, mCamera, mSceneMgr, light);
	mRoot->addFrameListener(mListener);
}

bool CMyOgreApp::go(CRect rt, HWND hWnd)
{
	createRoot();
	setupResources();
	setupRenderSystem();
	createRenderWindow(hWnd, rt.Width(), rt.Height());
	chooseSceneManager();
	createCamera();
	createViewport();
	initializeResourceGroups();
	createScene();
	createFrameListener();//创建侦听
	return true;
}

至此，整个工作就完成了，希望这几篇文章能帮到还在受这个问题困扰的朋友。
 PS：整个项目都在我上传的资源中，配置好环境变量，再按照里面的说明简单配置下就能编译运行

Demo地址：http://download.csdn.net/detail/guoyk1990/7360731

Ogre嵌入MFC傻瓜完全教程（三）,布布扣,bubuko.com

Ogre嵌入MFC傻瓜完全教程（三）

原文：http://blog.csdn.net/guoyk1990/article/details/26060353