History: IntermediateTutorial2SdkTraysSource

Source of version: 2 (current)

This is SdkTrays version of the source code for ((Intermediate Tutorial 2)).
{CODE(caption="ITutorial02.h",wrap="1", colors="c++")}

#ifndef __ITutorial02_h_
#define __ITutorial02_h_

//SdkTray-version
 
#include "BaseApplication.h"
 
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;	// Not needed since we are using SdkTrays
	float mRotateSpeed;		
 
};
 
#endif // #ifndef __ITutorial02_h_

{CODE}

{CODE(caption="ITutorial02.cpp",wrap="1", colors="c++")}
//SdkTray-version

//Following includes are not needed since we are using SdkTrays
//#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));
 
	// Following lines are not needed since we are using SdkTrays
	// CEGUI setup
	//mGUIRenderer = &CEGUI::OgreRenderer::bootstrapSystem();
	// Mouse
	//CEGUI::SchemeManager::getSingleton().create((CEGUI::utf8*)"TaharezLook.scheme");
	//CEGUI::MouseCursor::getSingleton().setImage("TaharezLook", "MouseArrow");

	//SdkTray - version:
	//Must come in createFrameListener, since the BaseApplication initializes the mTrayMgr there
 
}
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());

	//SdkTray - version - to get the mouse cursor on the screen:
	mTrayMgr->showCursor();
 
}
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 SdkTrays with the mouse motion
	mTrayMgr->injectMouseMove(arg);
	
	//Not needed, since we are using SdkTrays
	// 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)
	{
		//Not needed, since we are using SdkTrays
		//CEGUI::Point mousePos = CEGUI::MouseCursor::getSingleton().getPosition();
		//mCamera->getCameraToViewportRay(mousePos.d_x/float(arg.state.width),mousePos.d_y/float(arg.state.height));
		
		//SdkTray - version:
		Ogre::Ray mouseRay = mTrayMgr->getCursorRay(mCamera);
		
		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)
	{
		//Not needed, since we are using SdkTrays:
		// 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));
		
		//SdkTray - version:
		Ogre::Ray mouseRay = mTrayMgr->getCursorRay(mCamera);
		
		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)
	{
		//Not needed, since we are using SdkTrays:
		//CEGUI::MouseCursor::getSingleton().hide();

		//SdkTray - version:
		mTrayMgr->hideCursor();
		
		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)
        {
            //Not needed, since we are using SdkTrays:
			//CEGUI::MouseCursor::getSingleton().show();

			//SdkTray - version:
			mTrayMgr->showCursor();

            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}
History: IntermediateTutorial2SdkTraysSource

Source of version: 2 (current)

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