D:/simple_rts/src/Game.cpp

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#include "Game.h"

#include "Level.h"
#include "GameListener.h"
#include "Updater.h"

#include "OgreRoot.h"
#include "OgreException.h"
using Ogre::Root;
using Ogre::Exception;


// ----------------------------------------------------------------------------
template<> ASR::Game* Singleton<ASR::Game>::ms_Singleton = 0;


namespace ASR
{
        // ----------------------------------------------------------------------------
        Game::Game ( SceneManager* sceneMgr, RenderWindow* win )
                : mSceneMgr ( sceneMgr ), mWindow ( win )
        {
                mLevel = NULL;
                mListener = NULL;
        }


        // ----------------------------------------------------------------------------
        Game::~Game ()
        {
                destroyLevel ();
        }


        // ----------------------------------------------------------------------------
        Game* Game::getSingletonPtr(void)
        {
                return ms_Singleton;
        }
        Game& Game::getSingleton(void)
        {
                assert( ms_Singleton );  return ( *ms_Singleton );
        }


        // ----------------------------------------------------------------------------
        Level* Game::createLevel ()
        {
                if ( mLevel != NULL )
                        throw Exception ( Exception::ERR_DUPLICATE_ITEM, "Level already created", "Game::createLevel" );

                if ( mListener != NULL )
                        throw Exception ( Exception::ERR_DUPLICATE_ITEM, "There is already an existing Listener", "Game::createLevel" );

                mListener = new GameListener ( mWindow );
                Ogre::Root::getSingleton().addFrameListener( mListener );

                mLevel = new Level ();
                return mLevel;
        }


        // ----------------------------------------------------------------------------
        SceneManager* Game::getSceneManager() const
        {
                return mSceneMgr;
        }


        // ----------------------------------------------------------------------------
        Level* Game::getLevel () const
        {
                if ( mLevel == NULL )
                        throw Exception ( Exception::ERR_ITEM_NOT_FOUND, "Level does not exist", "Game::getLevel" );

                return mLevel;
        }


        // ----------------------------------------------------------------------------
        void Game::destroyLevel ()
        {
                if ( mLevel == NULL )
                        throw Exception ( Exception::ERR_ITEM_NOT_FOUND, "Level does not exist", "Game::getLevel" );

                Ogre::Root::getSingleton().removeFrameListener ( mListener );
                delete mListener;
                mListener = NULL;

                delete mLevel;
                mLevel = NULL;
        }


        // ----------------------------------------------------------------------------
        void Game::addUpdater ( Updater* updater )
        {
                OgreAssert ( mListener != NULL, "Listener has not been created - Game::addUpdater" );
                mListener->addUpdater ( updater );
        }
}

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