oasisframelistenersystembase.cpp

使用stl技术,(还没看,是听说的)

/******************************************************************************
 * This source file is part of Bad Camel Gaming
 * Copyright (C) 2003  Zephie Greyvenstein
 * See Readme.html for acknowledgements
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *****************************************************************************/

/******************************************************************************
 * FILENAME    : oasisFramelistenerSystemBase.cpp
 * DESCRIPTION : Real framelistener system class
 * AUTHOR      : Zephie Greyvenstein
 *****************************************************************************/

#include "oasisFrameListenerSystemBase.h"
#include "oasisFrameListener.h"
#include "oasisConfiguration.h"

/// Include Ogre stuff
#include "OgreRoot.h"
#include "OgreControllerManager.h"

/// Include optional profiler
#if USE_PROFILER == 1
#include "OgreProfiler.h"
#endif

namespace Oasis {
  
  frameListenerSystemBase::frameListenerSystemBase( ) {  
    // Register as a framelistener  
    Ogre::Root::getSingleton( ).addFrameListener( this ); 
       
    setTimeScale( 1 );
    listeners.clear( );
  }
  
  frameListenerSystemBase::~frameListenerSystemBase( ) {
    // Unregister as a framelistener
    Ogre::Root::getSingleton( ).removeFrameListener( this );
    
    listeners.clear( );
  }
  
  void frameListenerSystemBase::setTimeScale( real scale ) {
    if ( scale < 0 ) {
      scale = 0;
    }
  
    timeScale = scale;
    Ogre::ControllerManager::getSingleton( ).setTimeFactor( scale );
  }

  const real frameListenerSystemBase::getTimeScale( void ) const {
    return timeScale;
  }

  void frameListenerSystemBase::addFrameListener( frameListener *newFrameListener ) {
    listeners.insert( newFrameListener );
  }
  
  void frameListenerSystemBase::removeFrameListener( frameListener *oldFrameListener ) {
    listeners.erase( oldFrameListener );
  }
  
  bool frameListenerSystemBase::frameStarted( const Ogre::FrameEvent &evt ) {
#if USE_PROFILER == 1
    OgreProfileBegin( "Oasis Main Loop" );  
#endif

    frameListenerSet::iterator it;
    
    for( it = listeners.begin( ); it != listeners.end( ); ++it ) {
      if ( !( *it )->frameStarted( evt.timeSinceLastFrame * timeScale ) ) {
  return false;
      }
    }
    
    return true;
  }
  
  bool frameListenerSystemBase::frameEnded( const Ogre::FrameEvent &evt ) {
    frameListenerSet::iterator it;
    
    for( it = listeners.begin( ); it != listeners.end( ); ++it ) {
      if ( !( *it )->frameEnded( evt.timeSinceLastFrame * timeScale ) ) {
  return false;
      }
    }

#if USE_PROFILER == 1
    OgreProfileEnd( "Oasis Main Loop" );  
#endif    

    return true;
  }
}