null_m.h

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00001 /* $Id: null_m.h 17788 2009-10-17 15:15:00Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD 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.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #ifndef MUSIC_NULL_H
00013 #define MUSIC_NULL_H
00014 
00015 #include "music_driver.hpp"
00016 
00017 class MusicDriver_Null: public MusicDriver {
00018 public:
00019   /* virtual */ const char *Start(const char * const *param) { return NULL; }
00020 
00021   /* virtual */ void Stop() { }
00022 
00023   /* virtual */ void PlaySong(const char *filename) { }
00024 
00025   /* virtual */ void StopSong() { }
00026 
00027   /* virtual */ bool IsSongPlaying() { return true; }
00028 
00029   /* virtual */ void SetVolume(byte vol) { }
00030   /* virtual */ const char *GetName() const { return "null"; }
00031 };
00032 
00033 class FMusicDriver_Null: public MusicDriverFactory<FMusicDriver_Null> {
00034 public:
00035   static const int priority = 1;
00036   /* virtual */ const char *GetName() { return "null"; }
00037   /* virtual */ const char *GetDescription() { return "Null Music Driver"; }
00038   /* virtual */ Driver *CreateInstance() { return new MusicDriver_Null(); }
00039 };
00040 
00041 #endif /* MUSIC_NULL_H */

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