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History: IntermediateTutorial2Source
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Source of version: 8
(current)
This is the source code for ((Intermediate Tutorial 2)). {CODE(caption="ITutorial02 header",wrap="1", colors="c++")} #ifndef __ITutorial02_h_ #define __ITutorial02_h_ #include "BaseApplication.h" //Note: You probably do not need the following 3 lines: #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 #include "../res/resource.h" #endif class ITutorial02 : public BaseApplication { public: ITutorial02(void); virtual ~ITutorial02(void); protected: virtual void createScene(void); virtual void chooseSceneManager(void); virtual void createFrameListener(void); //frame listener virtual bool frameRenderingQueued(const Ogre::FrameEvent &evt); //mouse listener 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); protected: Ogre::RaySceneQuery *mRaySceneQuery;// The ray scene query pointer bool mLMouseDown, mRMouseDown; // True if the mouse buttons are down int mCount; // The number of robots on the screen Ogre::SceneNode *mCurrentObject; // The newly created object CEGUI::Renderer *mGUIRenderer; // CEGUI renderer float mRotateSpeed; }; #endif // #ifndef __ITutorial02_h_ {CODE} {CODE(caption="ITutorial02 implementation",wrap="1", colors="c++")} #include <CEGUISystem.h> #include <CEGUISchemeManager.h> #include <RendererModules/Ogre/CEGUIOgreRenderer.h> #include "ITutorial02.h" //------------------------------------------------------------------------------------- ITutorial02::ITutorial02(void) { } //------------------------------------------------------------------------------------- ITutorial02::~ITutorial02(void) { mSceneMgr->destroyQuery(mRaySceneQuery); } //------------------------------------------------------------------------------------- void ITutorial02::createScene(void) { // Set ambient light mSceneMgr->setAmbientLight(Ogre::ColourValue(0.5, 0.5, 0.5)); mSceneMgr->setSkyDome(true, "Examples/CloudySky", 5, 8); // World geometry mSceneMgr->setWorldGeometry("terrain.cfg"); // Set camera look point mCamera->setPosition(40, 100, 580); mCamera->pitch(Ogre::Degree(-30)); mCamera->yaw(Ogre::Degree(-45)); // CEGUI setup mGUIRenderer = &CEGUI::OgreRenderer::bootstrapSystem(); // Mouse CEGUI::SchemeManager::getSingleton().create((CEGUI::utf8*)"TaharezLook.scheme"); CEGUI::MouseCursor::getSingleton().setImage("TaharezLook", "MouseArrow"); } void ITutorial02::createFrameListener(void) { BaseApplication::createFrameListener(); // Setup default variables mCount = 0; mCurrentObject = NULL; mLMouseDown = false; mRMouseDown = false; // Reduce move speed //mMoveSpeed = 50; mRotateSpeed = .1; // Create RaySceneQuery mRaySceneQuery = mSceneMgr->createRayQuery(Ogre::Ray()); } void ITutorial02::chooseSceneManager(void) { // Use the terrain scene manager. mSceneMgr = mRoot->createSceneManager(Ogre::ST_EXTERIOR_CLOSE); } bool ITutorial02::frameRenderingQueued(const Ogre::FrameEvent &evt) { if (!BaseApplication::frameRenderingQueued(evt)) return false; // Setup the scene query Ogre::Vector3 camPos = mCamera->getPosition(); Ogre::Ray cameraRay(Ogre::Vector3(camPos.x, 5000.0f, camPos.z), Ogre::Vector3::NEGATIVE_UNIT_Y); mRaySceneQuery->setRay(cameraRay); // Perform the scene query Ogre::RaySceneQueryResult &result = mRaySceneQuery->execute(); Ogre::RaySceneQueryResult::iterator itr = result.begin(); // Get the results, set the camera height if (itr != result.end() && itr->worldFragment) { Ogre::Real terrainHeight = itr->worldFragment->singleIntersection.y; if ((terrainHeight + 10.0f) > camPos.y) mCamera->setPosition( camPos.x, terrainHeight + 10.0f, camPos.z ); } return true; } bool ITutorial02::mouseMoved(const OIS::MouseEvent &arg) { // Update CEGUI with the mouse motion CEGUI::System::getSingleton().injectMouseMove(arg.state.X.rel, arg.state.Y.rel); // If we are dragging the left mouse button. if (mLMouseDown) { CEGUI::Point mousePos = CEGUI::MouseCursor::getSingleton().getPosition(); Ogre::Ray mouseRay = mCamera->getCameraToViewportRay(mousePos.d_x/float(arg.state.width),mousePos.d_y/float(arg.state.height)); mRaySceneQuery->setRay(mouseRay); Ogre::RaySceneQueryResult &result = mRaySceneQuery->execute(); Ogre::RaySceneQueryResult::iterator itr = result.begin(); if (itr != result.end() && itr->worldFragment) mCurrentObject->setPosition(itr->worldFragment->singleIntersection); } // if // If we are dragging the right mouse button. else if (mRMouseDown) { mCamera->yaw(Ogre::Degree(-arg.state.X.rel * mRotateSpeed)); mCamera->pitch(Ogre::Degree(-arg.state.Y.rel * mRotateSpeed)); } // else if return true;} bool ITutorial02::mousePressed(const OIS::MouseEvent &arg, OIS::MouseButtonID id) { // Left mouse button down if (id == OIS::MB_Left) { // Setup the ray scene query, use CEGUI's mouse position CEGUI::Point mousePos = CEGUI::MouseCursor::getSingleton().getPosition(); Ogre::Ray mouseRay = mCamera->getCameraToViewportRay(mousePos.d_x/float(arg.state.width), mousePos.d_y/float(arg.state.height)); mRaySceneQuery->setRay(mouseRay); // Execute query Ogre::RaySceneQueryResult &result = mRaySceneQuery->execute(); Ogre::RaySceneQueryResult::iterator itr = result.begin( ); // Get results, create a node/entity on the position if (itr != result.end() && itr->worldFragment) { char name[16]; sprintf( name, "Robot%d", mCount++ ); Ogre::Entity *ent = mSceneMgr->createEntity(name, "robot.mesh"); mCurrentObject = mSceneMgr->getRootSceneNode()->createChildSceneNode(std::string(name)+ "Node", itr->worldFragment->singleIntersection); mCurrentObject->attachObject(ent); mCurrentObject->setScale(0.1f, 0.1f, 0.1f); } // if mLMouseDown = true; } // if // Right mouse button down else if (id == OIS::MB_Right) { CEGUI::MouseCursor::getSingleton().hide(); mRMouseDown = true; } // else if return true; } bool ITutorial02::mouseReleased(const OIS::MouseEvent &arg, OIS::MouseButtonID id) { // Left mouse button up if (id == OIS::MB_Left) { mLMouseDown = false; } // if // Right mouse button up else if (id == OIS::MB_Right) { CEGUI::MouseCursor::getSingleton().show(); mRMouseDown = false; } // else if 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 ITutorial02 app; try { app.go(); } catch( Ogre::Exception& e ) { #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 MessageBox( 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 } #endif {CODE}
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