1 /* Basic Ogre life cycle:
2 * 1. Create Root Object.
3 * 2. Define the resources that Ogre will use.
4 * 3. Choose and setup the RenderSystem.
5 * 4. Create the RenderWindow.
6 * 5. Initialise the resources that you are going to use.
7 * 6. Create a scene using those resources.
8 * 7. Set up any third party libraries and plugins.
9 * 8. Create any number of frame listeners.
10 * 9. Start the render loop.
11 *
12 * 以下是按步骤实现的部分代码。
13 */
14
15 Ogre::String mPluginsCfg = "plugins_d.cfg";
16 Ogre::Root mRoot = new Ogre::Root(mPluginsCfg);
17
18 Ogre::String mResourcesCfg = "resources_d.cfg";
19 Ogre::ConfigFile cf;
20 cf.load(mResourcesCfg);
21
22 // 你会在弹出的配置对话框中选择渲染系统，是否全屏等。
23 if(!(mRoot->restoreConfig() || mRoot->showConfigDialog())
24 {return false;}
25
26 // 你可以用 WIN32 的 API 自己创建窗口，不过还是用 OGRE 封装的比较好。
27 Ogre::RenderWindow *mWindow = mRoot->initialise(true, "Game Render Window");
28
29 // 两层 for 循环，即用所谓的迭代器完成资源文件的定位，然后添加进 OGRE 资源管理器，最后初始化
30 Ogre::ConfigFile::Interator seci = cf.getSectionInterator();
31 Ogre::ConfigFile::SettingsMultiMap *settings;
32 Ogre::ConfigFile::SettingsMultiMap::Interator *i;
33 Ogre::String secName, typeName, archName;
34 while(!seci.hasMoreElement())
35 {
36 secName = seci.peekNextKey();
37 settings = seci.getNext();
38 for(i=settings.begin(); i !=settings->end(); ++i)
39 {
40 typeName = i->first;
41 archName = i->second;
42 Ogre::ResourceManager::getSingleton().addResourceLocation(archName, typeName, secName);
43 }
44 }
45 Ogre::TextureManager::getSingleton().setDefaultNumMipmaps(5);
46 Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
47
48 // 创建场景、相机、观察点、怪物头像、场景节点、灯光，完成最简单场景的布置。
49 Ogre::SceneManager *mSceneMgr = mRoot->createSceneManager("defaultSceneManager");
50 mSceneMgr->setAmbientLight(Ogre::Colour(0.5,0.5,0.5));
51 Ogre::Camera *mCamera = mSceneMgr->createCamera("defaultCamera");
52 mCamera->setPosition(Ogre::Vector3(0,0,80));
53 mCamera->lookAt(Ogre::Vector3(0,0,-300));
54 mCamera->setNearClipDistance(5);
55 mCamera->setFarClipDistance(1000);
56 Ogre::Viewport *mViewport = mWindow->addViewport("defaultViewport");
57 mViewport->setBackgroundColour(Ogre::Colour(0,0,0));
58 mCamera->setAspectRatio(Ogre::Real(mViewport->getActualWidth()) / Ogre::Real(mViewport->getActualHeight));
59 Ogre::Entity *ogreHead = mSceneManager->createEntity("ogreHead", "ogrehead.mesh");
60 Ogre::SceneNode *ogreHeadNode = mSceneManager->getRootSceneNode().createChildSceneNode("ogreHeadNode");
61 ogreHeadNode->setPosition(Ogre::Vector3(0,0,0));
62 ogreHeadNode->attachObject(ogreHead);
63 Ogre::Light *mLight = mSceneMgr->createLight("mainLight");
64 mLight->setPosition(Ogre::Vector3(20,100,50));
65
66 // 使用第三方插件 - OIS
67 Ogre::LogManager::getSingletonPtr()->logMessage("*** Initialise OIS ***");
68 OIS::ParamList mParamList;
69 size_t windowHnd = 0;
70 std::ostringstream windowHndStr;
71 mWindow->getCustomAttribute("WINDOW", &windowHnd);
72 windowHndStr << windowHnd;
73 mParamList.insert(std::make_pair(std::string("WINDOW"), windowHndStr.str()));
74 OIS::InputManager *mInputManager = OIS::InputManger::createInputSystem(mParamList);
75 OIS::Mouse *mMouse = static_cast<OIS::Mouse *>(mInputManger->createInputObject(OIS::OISMouse, false));
76 OIS::Keyboard *mKeyboard = static_cast<OIS::Keyboard *>(mInputManger->createInputObject(OIS::OISKeyboard, false));
77
78 // 让本程序（this）接收消息，消息处理程序需要单独写。
79 mRoot->addFrameListener(this);
80
81 // startRendering 是 Root 对象一个简单实现的方法 - 在无限循环中 renderOneFrame()。
82 mRoot->startRendering();
83
View Code
