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00001 
00007 /* Copyright, 2001 Nevrax Ltd.
00008  *
00009  * This file is part of NEVRAX NEL.
00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
00011  * it under the terms of the GNU General Public License as published by
00012  * the Free Software Foundation; either version 2, or (at your option)
00013  * any later version.
00014 
00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00018  * General Public License for more details.
00019 
00020  * You should have received a copy of the GNU General Public License
00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
00023  * MA 02111-1307, USA.
00024  */
00025 
00026 #ifndef NL_BACKGROUND_SOURCE_H
00027 #define NL_BACKGROUND_SOURCE_H
00028 
00029 #include "nel/misc/types_nl.h"
00030 //#include "nel/sound/u_source.h"
00031 #include "source_common.h"
00032 #include "background_sound.h"
00033 
00034 
00035 namespace NLSOUND {
00036 
00037 class CBackgroundSound;
00038 
00044 class CBackgroundSource : public CSourceCommon, public CAudioMixerUser::IMixerEvent, public CAudioMixerUser::IMixerUpdate
00045 {
00046 public:
00048         CBackgroundSource       (CBackgroundSound *backgroundSource=NULL, bool spawn=false, TSpawnEndCallback cb=0, void *cbUserParam = 0);
00050         ~CBackgroundSource      ();
00051 
00053         void                                                    setSound( TSoundId id, CSoundContext *context = 0);
00055         virtual TSoundId                                getSound();
00056 
00057         virtual void                                    play();
00059         virtual void                                    stop();
00060 
00061         TSOURCE_TYPE                                    getType() const                                                         {return SOURCE_BACKGROUND;}
00062 
00063         void                                                    setGain( float gain );
00064         void                                                    setRelativeGain( float gain );
00065 
00066         void                                                    setPos( const NLMISC::CVector& pos );
00067         void                                                    setVelocity( const NLMISC::CVector& vel );
00068         void                                                    setDirection( const NLMISC::CVector& dir );
00069 
00070 
00071 private:
00072 
00074         bool    checkFilter(const UAudioMixer::TBackgroundFlags &filter);
00075 
00077         void onUpdate();
00079         void onEvent();
00080 
00082         enum TSubSourceStatus
00083         {
00085                 SUB_STATUS_PLAY,
00087                 SUB_STATUS_STOP,
00089                 SUB_STATUS_FADEOUT,
00091                 SUB_STATUS_FADEIN
00092         };
00093 
00095         struct TSubSource
00096         {
00098                 USource                         *Source;
00100                 TSubSourceStatus        Status;
00102                 NLMISC::TTime           FadeStart;
00104                 uint32                          FilterFadeIn;
00106                 uint32                          FilterFadeOut;
00108                 UAudioMixer::TBackgroundFlags   Filter;
00109         };
00110 
00112         CBackgroundSound                        *_BackgroundSound;
00113 
00115         std::vector<TSubSource>         _Sources;
00116 
00118         NLMISC::TTime                           _LastCheck;
00119 };
00120 
00121 
00122 
00123 } // NLSOOUND
00124 
00125 #endif // NL_BACKGROUND_SOURCE_H
background_source.h
