Ogre初级教程8

Ogre 基础教程八（翻译 byCatD） Prerequisites 先决条件   This tutorial assumes you have knowledge of C++ programming and are able to set up and compile an Ogre application. 本教程假设你已经拥有一定的 c++程序开发知识并且能够编译一定的 OGRE 程序。

This tutorial also assumes that you have created a project using the Ogre Wiki Tutorial Framework, either manually, using CMake or the Ogre AppWizard see Setting Up An Application for instructions. 本教程同时还假定你已经创建了一个 OGRE 的教程程序框架。

This tutorial builds on the previous basic tutorials, and it assumes you have already worked through them. 此教程建立在之前的教程基础之上，我们假定你已经完成了之前的教程。

  You can find the code for this tutorial here. As you go through the tutorial you should be slowly adding code to your own project and watching the results as we build it. 你可以找到此教程的完整代码，当你学习本教程时，应当慢慢的往你的代码中添加代码并观察 这些代码运行的结果。

Table of contents 目录    Prerequisites 先决条件 Getting Started 开始 o The Initial Code o 最初的代码 o Setting up the Application  Creating the SceneManagers  创建场景管理器  Creating the Cameras  创建摄像头  Creating the Viewports  创建视口  Creating the Scene  创建场景 o Adding Functionality o 增加功能  Dual SceneManagers  双重场景管理器  Swapping SceneManagers  交换场景管理器 o Conclusion o 结论   Overlays 结束 One Last Note 最后一个注意点Getting Started 开始The Initial Code 最初代码Modify your Basic Tutorial 8 class header to look like this: 修改你的 Basic Tutorial8 项目头文件像这样： （文件名为 Basic Tutorial8.h；这是一个头文件，如果你没有，那么你需要在你的项目中新建 一个空白的头文件.h 结尾，然后将下面的代码添加进去并保存。

）#ifndef __BasicTutorial8_h_ #define __BasicTutorial8_h_ #include "BaseApplication.h" class BasicTutorial8 : public BaseApplication { public: BasicTutorial8(void); virtual ~BasicTutorial8(void); protected: virtual virtual virtual virtual virtualvoid void void void voidcreateScene(void); chooseSceneManager(void); createCamera(void); createViewports(void); createFrameListener(void);virtual bool frameRenderingQueued(const Ogre::FrameEvent& evt);// OIS::KeyListener //ois 的键盘监听器 virtual bool keyPressed( const OIS::KeyEvent &arg ); virtual bool keyReleased( const OIS::KeyEvent &arg );// OIS::MouseListener //ois 的鼠标监听器 virtual bool mouseMoved( const OIS::MouseEvent &arg ); virtual bool mousePressed( const OIS::MouseEvent &arg, OIS::MouseButtonID id ); virtual bool mouseReleased( const OIS::MouseEvent &arg, OIS::MouseButtonID id ); private: Ogre::SceneManager* mPrimarySceneMgr; Ogre::SceneManager* mSecondarySceneMgr; bool mDual; virtual void setupViewport(Ogre::SceneManager *curr); virtual void dualViewport(Ogre::SceneManager *primarySceneMgr, Ogre::SceneManager *secondarySceneMgr); }; #endif // #ifndef __BasicTutorial8_h_Make sure that your Basic Tutorial 8 implementation file looks like this: 确保你的 Basic Tutorial 8.cpp 是下面的这个样子：#include "BasicTutorial8.h" #define CAMERA_NAME "SceneCamera" //-----------------------------------------------------------------------------------BasicTutorial8::BasicTutorial8(void) :mPrimarySceneMgr(0), mSecondarySceneMgr(0), mDual(false) { } //-----------------------------------------------------------------------------------BasicTutorial8::~BasicTutorial8(void) {}//-----------------------------------------------------------------------------------//Local Functions void BasicTutorial8::setupViewport(Ogre::SceneManager *curr) { } void BasicTutorial8::dualViewport(Ogre::SceneManager *primarySceneMgr, Ogre::SceneManager *secondarySceneMgr) { } static void swap(Ogre::SceneManager *&first, Ogre::SceneManager *&second) { Ogre::SceneManager *tmp = first; first = second; second = tmp; }//-----------------------------------------------------------------------------------void BasicTutorial8::createScene(void) { }void BasicTutorial8::chooseSceneManager(void) { } void BasicTutorial8::createCamera() { }void BasicTutorial8::createViewports() { }void BasicTutorial8::createFrameListener(void) { Ogre::LogManager::getSingletonPtr()->logMessage("*** Initializing OIS ***"); OIS::ParamList pl; size_t windowHnd = 0; std::ostringstream windowHndStr; mWindow->getCustomAttribute("WINDOW", &windowHnd); windowHndStr << windowHnd; pl.insert(std::make_pair(std::string("WINDOW"), windowHndStr.str())); 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); //Set initial mouse clipping size windowResized(mWindow); //Register as a Window listener Ogre::WindowEventUtilities::addWindowEventListener(mWindo w, this); mRoot->addFrameListener(this); }bool BasicTutorial8::frameRenderingQueued(const Ogre::FrameEvent& evt) { if(mWindow->isClosed()) return false; if(mShutDown) return false; //Need to capture/update each device mKeyboard->capture(); mMouse->capture(); return true; }bool BasicTutorial8::keyPressed( const OIS::KeyEvent &arg ) { if (arg.key == OIS::KC_ESCAPE) { mShutDown = true; } return true; } bool BasicTutorial8::keyReleased( const OIS::KeyEvent &arg ) { return true; } bool BasicTutorial8::mouseMoved( const OIS::MouseEvent &arg ) { return true;} bool BasicTutorial8::mousePressed( const OIS::MouseEvent &arg, OIS::MouseButtonID id ) { return true; } bool BasicTutorial8::mouseReleased( const OIS::MouseEvent &arg, OIS::MouseButtonID id ) { return true; }#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 #define WIN32_LEAN_AND_MEAN #include "windows.h" #endif #ifdef __cplusplus extern "C" { #endif #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT ) #else int main(int argc, char *argv[]) #endif { // Create application object BasicTutorial8 app; try { app.go(); } catch( Ogre::Exception& e ) { #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL); #else std::cerr << "An exception has occured: " << e.getFullDescription().c_str() << std::endl; #endif } return 0; } #ifdef __cplusplus } #endifBe sure you can compile this code before continuing, running the program will only show a black screen. Press Esc to exit. 在咱开始接下来的教程之前确保你能运行这些代码，运行时你只能看到一个全黑的屏幕，按 ESC 键可以退出。