D:/Papagan/490.2006/490.2006/korsan/Papagan/490.2006/korsan/Papagan/ExampleApplication.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2005 The OGRE Team
Also see acknowledgements in Readme.html

You may use this sample code for anything you like, it is not covered by the
LGPL like the rest of the engine.
-----------------------------------------------------------------------------
*/
/*
-----------------------------------------------------------------------------
Filename:    ExampleApplication.h
Description: Base class for all the OGRE examples
-----------------------------------------------------------------------------
*/

#ifndef __ExampleApplication_H__
#define __ExampleApplication_H__

#include "Ogre.h"
#include "OgreConfigFile.h"
#include "ExampleFrameListener.h"


using namespace Ogre;

class ExampleApplication
{
public:
    ExampleApplication()
    {
        mFrameListener = 0;
        mRoot = 0;
    }
    virtual ~ExampleApplication()
    {
        if (mFrameListener)
            delete mFrameListener;
        if (mRoot)
            delete mRoot;
    }

    virtual void go(void)
    {
        if (!setup())
            return;

        mRoot->startRendering();

        // clean up
        destroyScene();
    }

protected:
    Root *mRoot;
    Camera* mCamera;
    SceneManager* mSceneMgr;
    ExampleFrameListener* mFrameListener;
    RenderWindow* mWindow;

    // These internal methods package up the stages in the startup process
    virtual bool setup(void)
    {
        mRoot = new Root();

        setupResources();

        bool carryOn = configure();
        if (!carryOn) return false;

        chooseSceneManager();
        createCamera();
        createViewports();

        // Set default mipmap level (NB some APIs ignore this)
        TextureManager::getSingleton().setDefaultNumMipmaps(5);

                // Create any resource listeners (for loading screens)
                createResourceListener();
                // Load resources
                loadResources();

                // Create the scene
        createScene();

        createFrameListener();

        return true;

    }
    virtual bool configure(void)
    {
        // Show the configuration dialog and initialise the system
        // You can skip this and use root.restoreConfig() to load configuration
        // settings if you were sure there are valid ones saved in ogre.cfg
        if(mRoot->showConfigDialog())
        {
            // If returned true, user clicked OK so initialise
            // Here we choose to let the system create a default rendering window by passing 'true'
            mWindow = mRoot->initialise(true);
            return true;
        }
        else
        {
            return false;
        }
    }

    virtual void chooseSceneManager(void)
    {
        // Get the SceneManager, in this case a generic one
        mSceneMgr = mRoot->getSceneManager(ST_GENERIC);
    }
    virtual void createCamera(void)
    {
        // Create the camera
        mCamera = mSceneMgr->createCamera("PlayerCam");

        // Position it at 500 in Z direction
        mCamera->setPosition(Vector3(0,0,500));
        // Look back along -Z
        mCamera->lookAt(Vector3(0,0,-300));
        mCamera->setNearClipDistance(5);

    }
    virtual void createFrameListener(void)
    {
        mFrameListener= new ExampleFrameListener(mWindow, mCamera);
        //mFrameListener->showDebugOverlay(true);
        mRoot->addFrameListener(mFrameListener);
    }

    virtual void createScene(void) = 0;    // pure virtual - this has to be overridden

    virtual void destroyScene(void){}    // Optional to override this

    virtual void createViewports(void)
    {
        // Create one viewport, entire window
        Viewport* vp = mWindow->addViewport(mCamera);
        vp->setBackgroundColour(ColourValue(0,0,0));

        // Alter the camera aspect ratio to match the viewport
        mCamera->setAspectRatio(
            Real(vp->getActualWidth()) / Real(vp->getActualHeight()));
    }

    virtual void setupResources(void)
    {
        // Load resource paths from config file
        ConfigFile cf;
        cf.load("resources.cfg");

        // Go through all sections & settings in the file
        ConfigFile::SectionIterator seci = cf.getSectionIterator();

        String secName, typeName, archName;
        while (seci.hasMoreElements())
        {
            secName = seci.peekNextKey();
            ConfigFile::SettingsMultiMap *settings = seci.getNext();
            ConfigFile::SettingsMultiMap::iterator i;
            for (i = settings->begin(); i != settings->end(); ++i)
            {
                typeName = i->first;
                archName = i->second;
                ResourceGroupManager::getSingleton().addResourceLocation(
                    archName, typeName, secName);
            }
        }
    }

        virtual void createResourceListener(void)
        {

        }

        virtual void loadResources(void)
        {
                // Initialise, parse scripts etc
                ResourceGroupManager::getSingleton().initialiseAllResourceGroups();

        }



};


#endif

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