用自己的main loop替代系统的main loop
#include "ogre/Ogre.h"#include "ois/OIS.h"class MyFrameListener : public Ogre::FrameListener{public: MyFrameListener(Ogre::RenderWindow* win) { size_t winHandle = 0; std::ostringstream winHandleStr; OIS::ParamList pl; win->getCustomAttribute("WINDOW", &winHandle); winHandleStr << winHandle; pl.insert(make_pair("WINDOW", winHandleStr.str())); inputMgr_ = OIS::InputManager::createInputSystem(pl); keyBoard_ = static_cast<OIS::Keyboard*>(inputMgr_->createInputObject(OIS::OISKeyboard, false)); } ~MyFrameListener() { inputMgr_->destroyInputObject(keyBoard_); OIS::InputManager::destroyInputSystem(inputMgr_); } // 返回false则渲染结束 bool frameStarted(const Ogre::FrameEvent& evt) { keyBoard_->capture(); if (keyBoard_->isKeyDown(OIS::KC_ESCAPE)) { return false; } return true; } // 返回false则渲染结束 bool frameRenderingQueued(const Ogre::FrameEvent& evt) { return true; } // 返回false则渲染结束 bool frameEnded(const Ogre::FrameEvent& evt) { return true; }private: OIS::InputManager* inputMgr_; OIS::Keyboard* keyBoard_;};class MyAppliaction{public: MyAppliaction() { root_ = 0; sceneMgr_ = 0; frameListener_ = 0; keepRunning_ = true; } ~MyAppliaction() { delete root_; delete frameListener_; } void LoadResources() { Ogre::ConfigFile cf; cf.load("resources_d.cfg"); Ogre::ConfigFile::SectionIterator ite = cf.getSectionIterator(); Ogre::String sectionName, typeName, dataName; while (ite.hasMoreElements()) { sectionName = ite.peekNextKey(); Ogre::ConfigFile::SettingsMultiMap* setting = ite.getNext(); Ogre::ConfigFile::SettingsMultiMap::iterator i; for (i = setting->begin(); i != setting->end(); ++i) { typeName = i->first; dataName = i->second; Ogre::ResourceGroupManager::getSingleton().addResourceLocation(dataName, typeName, sectionName); } } Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups(); } void CreateScene() { Ogre::Entity* ent = sceneMgr_->createEntity("Sinbad.mesh"); sceneMgr_->getRootSceneNode()->createChildSceneNode()->attachObject(ent); } bool KeepRunning() const { return keepRunning_; } void RenderOneFrame() { // 处理消息 Ogre::WindowEventUtilities::messagePump(); keepRunning_ = root_->renderOneFrame(); } int StartUp() { root_ = new Ogre::Root("plugins_d.cfg"); if (!root_->showConfigDialog()) return -1; Ogre::RenderWindow* window = root_->initialise(true, "HKX"); sceneMgr_ = root_->createSceneManager(Ogre::ST_GENERIC); Ogre::Camera* camera = sceneMgr_->createCamera("camera"); camera->setPosition(Ogre::Vector3(0, 0, 50)); camera->lookAt(0, 0, 0); camera->setNearClipDistance(5); Ogre::Viewport* vp = window->addViewport(camera, 0, 0, 0, 1.0, 1.0); vp->setBackgroundColour(Ogre::ColourValue(0.0, 0.0, 0.0, 0.0)); camera->setAspectRatio(Ogre::Real(vp->getActualWidth()) / Ogre::Real(vp->getActualHeight())); frameListener_ = new MyFrameListener(window); root_->addFrameListener(frameListener_); LoadResources(); CreateScene();// root_->startRendering(); return 0; }private: Ogre::Root* root_; Ogre::SceneManager* sceneMgr_; MyFrameListener* frameListener_; bool keepRunning_;};int main(){ MyAppliaction app; app.StartUp(); while(app.KeepRunning()) { app.RenderOneFrame(); } return 0;}
添加鼠标和键盘WASD控制：
#include "ogre/Ogre.h"#include "ois/OIS.h"class MyFrameListener : public Ogre::FrameListener{public: MyFrameListener(Ogre::RenderWindow* win, Ogre::Camera* cam) { camera_ = cam; movementSpeed_ = 50.0f; size_t winHandle = 0; std::ostringstream winHandleStr; OIS::ParamList pl; win->getCustomAttribute("WINDOW", &winHandle); winHandleStr << winHandle; pl.insert(make_pair("WINDOW", winHandleStr.str())); inputMgr_ = OIS::InputManager::createInputSystem(pl); keyBoard_ = static_cast<OIS::Keyboard*>(inputMgr_->createInputObject(OIS::OISKeyboard, false)); mouse_ = static_cast<OIS::Mouse*>(inputMgr_->createInputObject(OIS::OISMouse, false)); } ~MyFrameListener() { inputMgr_->destroyInputObject(keyBoard_); inputMgr_->destroyInputObject(mouse_); OIS::InputManager::destroyInputSystem(inputMgr_); } // 返回false则渲染结束 bool frameStarted(const Ogre::FrameEvent& evt) { keyBoard_->capture(); if (keyBoard_->isKeyDown(OIS::KC_ESCAPE)) return false; Ogre::Vector3 translate(0, 0, 0); if (keyBoard_->isKeyDown(OIS::KC_W)) translate += Ogre::Vector3(0, 0, -1); if (keyBoard_->isKeyDown(OIS::KC_S)) translate += Ogre::Vector3(0, 0, 1); if (keyBoard_->isKeyDown(OIS::KC_A)) translate += Ogre::Vector3(-1, 0, 0); if (keyBoard_->isKeyDown(OIS::KC_D)) translate += Ogre::Vector3(1, 0, 0); camera_->moveRelative(translate * evt.timeSinceLastFrame * movementSpeed_); mouse_->capture(); float rotX = mouse_->getMouseState().X.rel * evt.timeSinceLastFrame * -1; float rotY = mouse_->getMouseState().Y.rel * evt.timeSinceLastFrame * -1; camera_->yaw(Ogre::Radian(rotX)); camera_->pitch(Ogre::Radian(rotY)); return true; } // 返回false则渲染结束 bool frameRenderingQueued(const Ogre::FrameEvent& evt) { return true; } // 返回false则渲染结束 bool frameEnded(const Ogre::FrameEvent& evt) { return true; }private: OIS::InputManager* inputMgr_; OIS::Keyboard* keyBoard_; OIS::Mouse* mouse_; Ogre::Camera* camera_; float movementSpeed_;};class MyAppliaction{public: MyAppliaction() { root_ = 0; sceneMgr_ = 0; frameListener_ = 0; keepRunning_ = true; } ~MyAppliaction() { delete root_; delete frameListener_; } void LoadResources() { Ogre::ConfigFile cf; cf.load("resources_d.cfg"); Ogre::ConfigFile::SectionIterator ite = cf.getSectionIterator(); Ogre::String sectionName, typeName, dataName; while (ite.hasMoreElements()) { sectionName = ite.peekNextKey(); Ogre::ConfigFile::SettingsMultiMap* setting = ite.getNext(); Ogre::ConfigFile::SettingsMultiMap::iterator i; for (i = setting->begin(); i != setting->end(); ++i) { typeName = i->first; dataName = i->second; Ogre::ResourceGroupManager::getSingleton().addResourceLocation(dataName, typeName, sectionName); } } Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups(); } void CreateScene() { Ogre::Entity* ent = sceneMgr_->createEntity("Sinbad.mesh"); sceneMgr_->getRootSceneNode()->createChildSceneNode()->attachObject(ent); } bool KeepRunning() const { return keepRunning_; } void RenderOneFrame() { // 处理消息 Ogre::WindowEventUtilities::messagePump(); keepRunning_ = root_->renderOneFrame(); } int StartUp() { root_ = new Ogre::Root("plugins_d.cfg"); if (!root_->showConfigDialog()) return -1; Ogre::RenderWindow* window = root_->initialise(true, "HKX"); sceneMgr_ = root_->createSceneManager(Ogre::ST_GENERIC); Ogre::Camera* camera = sceneMgr_->createCamera("camera"); camera->setPosition(Ogre::Vector3(0, 0, 50)); camera->lookAt(0, 0, 0); camera->setNearClipDistance(5); Ogre::Viewport* vp = window->addViewport(camera, 0, 0, 0, 1.0, 1.0); vp->setBackgroundColour(Ogre::ColourValue(0.0, 0.0, 0.0, 0.0)); camera->setAspectRatio(Ogre::Real(vp->getActualWidth()) / Ogre::Real(vp->getActualHeight())); frameListener_ = new MyFrameListener(window, camera); root_->addFrameListener(frameListener_); LoadResources(); CreateScene();// root_->startRendering(); return 0; }private: Ogre::Root* root_; Ogre::SceneManager* sceneMgr_; MyFrameListener* frameListener_; bool keepRunning_;};int main(){ MyAppliaction app; app.StartUp(); while(app.KeepRunning()) { app.RenderOneFrame(); } return 0;}
添加合成器、地面、光照、阴影：
#include "ogre/Ogre.h"#include "ois/OIS.h"class MyFrameListener : public Ogre::FrameListener{public: MyFrameListener(Ogre::RenderWindow* win, Ogre::Camera* cam, Ogre::Viewport* vp) { camera_ = cam; movementSpeed_ = 50.0f; vp_ = vp; size_t winHandle = 0; std::ostringstream winHandleStr; OIS::ParamList pl; win->getCustomAttribute("WINDOW", &winHandle); winHandleStr << winHandle; pl.insert(make_pair("WINDOW", winHandleStr.str())); inputMgr_ = OIS::InputManager::createInputSystem(pl); keyBoard_ = static_cast<OIS::Keyboard*>(inputMgr_->createInputObject(OIS::OISKeyboard, false)); mouse_ = static_cast<OIS::Mouse*>(inputMgr_->createInputObject(OIS::OISMouse, false)); bComp1On_ = false; bComp2On_ = false; bComp3On_ = false; bDown1_ = false; bDown2_ = false; bDown3_ = false; } ~MyFrameListener() { inputMgr_->destroyInputObject(keyBoard_); inputMgr_->destroyInputObject(mouse_); OIS::InputManager::destroyInputSystem(inputMgr_); } // 返回false则渲染结束 bool frameStarted(const Ogre::FrameEvent& evt) { keyBoard_->capture(); if (keyBoard_->isKeyDown(OIS::KC_ESCAPE)) return false; Ogre::Vector3 translate(0, 0, 0); if (keyBoard_->isKeyDown(OIS::KC_W)) translate += Ogre::Vector3(0, 0, -1); if (keyBoard_->isKeyDown(OIS::KC_S)) translate += Ogre::Vector3(0, 0, 1); if (keyBoard_->isKeyDown(OIS::KC_A)) translate += Ogre::Vector3(-1, 0, 0); if (keyBoard_->isKeyDown(OIS::KC_D)) translate += Ogre::Vector3(1, 0, 0); camera_->moveRelative(translate * evt.timeSinceLastFrame * movementSpeed_); mouse_->capture(); float rotX = mouse_->getMouseState().X.rel * evt.timeSinceLastFrame * -1; float rotY = mouse_->getMouseState().Y.rel * evt.timeSinceLastFrame * -1; camera_->yaw(Ogre::Radian(rotX)); camera_->pitch(Ogre::Radian(rotY)); if (keyBoard_->isKeyDown(OIS::KC_1) && !bDown1_) { bDown1_ = true; bComp1On_ = !bComp1On_; Ogre::CompositorManager::getSingleton().setCompositorEnabled(vp_, "Compositor1", bComp1On_); } if (keyBoard_->isKeyDown(OIS::KC_2) && !bDown2_) { bDown2_ = true; bComp2On_ = !bComp2On_; Ogre::CompositorManager::getSingleton().setCompositorEnabled(vp_, "Compositor2", bComp2On_); } if (keyBoard_->isKeyDown(OIS::KC_3) && !bDown3_) { bDown3_ = true; bComp3On_ = !bComp3On_; Ogre::CompositorManager::getSingleton().setCompositorEnabled(vp_, "Compositor3", bComp3On_); } if (!keyBoard_->isKeyDown(OIS::KC_1)) bDown1_ = false; if (!keyBoard_->isKeyDown(OIS::KC_2)) bDown2_ = false; if (!keyBoard_->isKeyDown(OIS::KC_3)) bDown3_ = false; return true; } // 返回false则渲染结束 bool frameRenderingQueued(const Ogre::FrameEvent& evt) { return true; } // 返回false则渲染结束 bool frameEnded(const Ogre::FrameEvent& evt) { return true; }private: OIS::InputManager* inputMgr_; OIS::Keyboard* keyBoard_; OIS::Mouse* mouse_; Ogre::Camera* camera_; float movementSpeed_; Ogre::Viewport* vp_; // which compositor on bool bComp1On_; bool bComp2On_; bool bComp3On_; bool bDown1_; bool bDown2_; bool bDown3_;};class MyAppliaction{public: MyAppliaction() { root_ = 0; sceneMgr_ = 0; frameListener_ = 0; keepRunning_ = true; } ~MyAppliaction() { delete root_; delete frameListener_; } void LoadResources() { Ogre::ConfigFile cf; cf.load("resources_d.cfg"); Ogre::ConfigFile::SectionIterator ite = cf.getSectionIterator(); Ogre::String sectionName, typeName, dataName; while (ite.hasMoreElements()) { sectionName = ite.peekNextKey(); Ogre::ConfigFile::SettingsMultiMap* setting = ite.getNext(); Ogre::ConfigFile::SettingsMultiMap::iterator i; for (i = setting->begin(); i != setting->end(); ++i) { typeName = i->first; dataName = i->second; Ogre::ResourceGroupManager::getSingleton().addResourceLocation(dataName, typeName, sectionName); } } Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups(); } void CreateScene() { Ogre::Plane plane(Ogre::Vector3::UNIT_Y, -5); Ogre::MeshManager::getSingleton().createPlane("plane", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, plane, 1500, 1500, 200, 200, true, 1, 5, 5, Ogre::Vector3::UNIT_Z); Ogre::Entity* ground = sceneMgr_->createEntity("planeEntity", "plane"); sceneMgr_->getRootSceneNode()->createChildSceneNode()->attachObject(ground); ground->setMaterialName("Examples/BeachStones"); Ogre::Light* light = sceneMgr_->createLight("light1"); light->setType(Ogre::Light::LT_DIRECTIONAL); light->setDirection(Ogre::Vector3(1, -1, 0)); sceneMgr_->setShadowTechnique(Ogre::SHADOWTYPE_STENCIL_ADDITIVE); Ogre::Entity* ent = sceneMgr_->createEntity("Sinbad.mesh"); sceneMgr_->getRootSceneNode()->createChildSceneNode()->attachObject(ent); } bool KeepRunning() const { return keepRunning_; } void RenderOneFrame() { // 处理消息 Ogre::WindowEventUtilities::messagePump(); keepRunning_ = root_->renderOneFrame(); } int StartUp() { root_ = new Ogre::Root("plugins_d.cfg"); if (!root_->showConfigDialog()) return -1; Ogre::RenderWindow* window = root_->initialise(true, "HKX"); sceneMgr_ = root_->createSceneManager(Ogre::ST_GENERIC); Ogre::Camera* camera = sceneMgr_->createCamera("camera"); camera->setPosition(Ogre::Vector3(0, 0, 50)); camera->lookAt(0, 0, 0); camera->setNearClipDistance(5); Ogre::Viewport* vp = window->addViewport(camera, 0, 0, 0, 1.0, 1.0); vp->setBackgroundColour(Ogre::ColourValue(0.0, 0.0, 0.0, 0.0)); camera->setAspectRatio(Ogre::Real(vp->getActualWidth()) / Ogre::Real(vp->getActualHeight())); frameListener_ = new MyFrameListener(window, camera, vp); root_->addFrameListener(frameListener_); // 添加三个合成器 Ogre::CompositorManager::getSingleton().addCompositor(vp, "Compositor1"); Ogre::CompositorManager::getSingleton().addCompositor(vp, "Compositor2"); Ogre::CompositorManager::getSingleton().addCompositor(vp, "Compositor3"); LoadResources(); CreateScene();// root_->startRendering(); return 0; }private: Ogre::Root* root_; Ogre::SceneManager* sceneMgr_; MyFrameListener* frameListener_; bool keepRunning_;};int main(){ MyAppliaction app; app.StartUp(); while(app.KeepRunning()) { app.RenderOneFrame(); } return 0;}
来源：https://www.cnblogs.com/kex1n/archive/2011/12/06/2277943.html