Twelfth Demo of OGRE

#include <CEGUI/CEGUISystem.h> #include <CEGUI/CEGUISchemeManager.h> #include <OgreCEGUIRenderer.h> #include "ExampleApplication.h" class MouseQueryListener : public ExampleFrameListener, public OIS::MouseListener { public: MouseQueryListener(RenderWindow* win, Camera* cam, SceneManager *sceneManager, CEGUI::Renderer *renderer) : ExampleFrameListener(win, cam, false, true), mGUIRenderer(renderer) { // Setup default variables mCount = 0; mCurrentObject = NULL; mLMouseDown = false; mRMouseDown = false; mSceneMgr = sceneManager; // Reduce move speed mMoveSpeed = 50; mRotateSpeed /= 500; mMouse->setEventCallback(this); // Create RaySceneQuery mRaySceneQuery = mSceneMgr->createRayQuery(Ray()); } // MouseQueryListener ~MouseQueryListener() { // We created the query, and we are also responsible for deleting it. mSceneMgr->destroyQuery(mRaySceneQuery); } bool frameStarted(const FrameEvent &evt) { // Process the base frame listener code. Since we are going to be // manipulating the translate vector, we need this to happen first. if (!ExampleFrameListener::frameStarted(evt)) { return false; } Vector3 camPos = mCamera->getPosition(); Ray cameraRay(Vector3(camPos.x, 5000.0f, camPos.z), Vector3::NEGATIVE_UNIT_Y); mRaySceneQuery->setRay(cameraRay); // Perform the scene query RaySceneQueryResult &result = mRaySceneQuery->execute(); RaySceneQueryResult::iterator itr = result.begin(); // Get the results, set the camera height if (itr != result.end() && itr->worldFragment) { Real terrainHeight = itr->worldFragment->singleIntersection.y; if ((terrainHeight + 10.0f) > camPos.y) { mCamera->setPosition( camPos.x, terrainHeight + 10.0f, camPos.z ); } } return true; } /* MouseListener callbacks. */ bool mouseMoved(const OIS::MouseEvent &arg) { //move the curor when mouse move CEGUI::System::getSingleton().injectMouseMove(arg.state.X.rel,arg.state.Y.rel); // If we are dragging the left mouse button. if (mLMouseDown) { } // if // If we are dragging the right mouse button. else if (mRMouseDown) { mCamera->yaw(Degree(-arg.state.X.rel * mRotateSpeed)); mCamera->pitch(Degree(-arg.state.Y.rel * mRotateSpeed)); } // else if return true; } bool mousePressed(const OIS::MouseEvent &arg, OIS::MouseButtonID id) { // Left mouse button down if (id == OIS::MB_Left) { mLMouseDown = true; // Setup the ray scene query, use CEGUI's mouse position CEGUI::Point mousePos = CEGUI::MouseCursor::getSingleton().getPosition(); Ray mouseRay = mCamera->getCameraToViewportRay(mousePos.d_x/float(arg.state.width), mousePos.d_y/float(arg.state.height)); mRaySceneQuery->setRay(mouseRay); // Execute query RaySceneQueryResult &result = mRaySceneQuery->execute(); 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++ ); Entity *ent = mSceneMgr->createEntity(name, "robot.mesh"); mCurrentObject = mSceneMgr->getRootSceneNode()->createChildSceneNode(String(name) + "Node", itr->worldFragment->singleIntersection); mCurrentObject->attachObject(ent); mCurrentObject->setScale(0.3f, 0.3f, 0.3f); } // if if (mLMouseDown) { CEGUI::Point mousePos = CEGUI::MouseCursor::getSingleton().getPosition(); Ray mouseRay = mCamera->getCameraToViewportRay(mousePos.d_x/float(arg.state.width),mousePos.d_y/float(arg.state.height)); mRaySceneQuery->setRay(mouseRay); RaySceneQueryResult &result = mRaySceneQuery->execute(); RaySceneQueryResult::iterator itr = result.begin(); if (itr != result.end() && itr->worldFragment) mCurrentObject->setPosition(itr->worldFragment->singleIntersection); } // if } // if // Right mouse button down else if (id == OIS::MB_Right) { CEGUI::MouseCursor::getSingleton().hide(); mRMouseDown = true; } // else if return true; } bool mouseReleased(const OIS::MouseEvent &arg, OIS::MouseButtonID id) { if(id == OIS::MB_Left) { mLMouseDown = true; } else if(id == OIS::MB_Right) { CEGUI::MouseCursor::getSingleton().show(); } return true; } protected: 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 SceneManager *mSceneMgr; // A pointer to the scene manager SceneNode *mCurrentObject; // The newly created object CEGUI::Renderer *mGUIRenderer; // CEGUI renderer }; class MouseQueryApplication : public ExampleApplication { protected: CEGUI::OgreCEGUIRenderer *mGUIRenderer; CEGUI::System *mGUISystem; // cegui system public: MouseQueryApplication() { } ~MouseQueryApplication() { } protected: void chooseSceneManager(void) { // Use the terrain scene manager. mSceneMgr = mRoot->createSceneManager(ST_EXTERIOR_CLOSE); } void createScene(void) { // Set ambient light mSceneMgr->setAmbientLight(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(Degree(-30)); mCamera->yaw(Degree(-45)); // CEGUI setup mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY, false, 3000, mSceneMgr); mGUISystem = new CEGUI::System(mGUIRenderer); // Mouse CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLookSkin.scheme"); CEGUI::MouseCursor::getSingleton().setImage("TaharezLook", "MouseArrow"); } void createFrameListener(void) { mFrameListener = new MouseQueryListener(mWindow, mCamera, mSceneMgr, mGUIRenderer); mFrameListener->showDebugOverlay(true); mRoot->addFrameListener(mFrameListener); } }; INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT ) { // Create application object MouseQueryApplication app; try { app.go(); } catch( Ogre::Exception& e ) { MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL); } return 0; }