newgrf_sound.cpp

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00001 /* $Id: newgrf_sound.cpp 11719 2007-12-29 09:24:26Z rubidium $ */
00002 
00005 #include "stdafx.h"
00006 #include "openttd.h"
00007 #include "oldpool.h"
00008 #include "engine.h"
00009 #include "newgrf_callbacks.h"
00010 #include "newgrf_engine.h"
00011 #include "newgrf_sound.h"
00012 #include "vehicle_base.h"
00013 #include "sound_func.h"
00014 
00015 static uint _sound_count = 0;
00016 STATIC_OLD_POOL(SoundInternal, FileEntry, 3, 1000, NULL, NULL)
00017 
00018 
00019 /* Allocate a new FileEntry */
00020 FileEntry *AllocateFileEntry()
00021 {
00022   if (_sound_count == GetSoundInternalPoolSize()) {
00023     if (!_SoundInternal_pool.AddBlockToPool()) return NULL;
00024   }
00025 
00026   return GetSoundInternal(_sound_count++);
00027 }
00028 
00029 
00030 void InitializeSoundPool()
00031 {
00032   _SoundInternal_pool.CleanPool();
00033   _sound_count = 0;
00034 
00035   /* Copy original sound data to the pool */
00036   SndCopyToPool();
00037 }
00038 
00039 
00040 FileEntry *GetSound(uint index)
00041 {
00042   if (index >= GetNumSounds()) return NULL;
00043   return GetSoundInternal(index);
00044 }
00045 
00046 
00047 uint GetNumSounds()
00048 {
00049   return _sound_count;
00050 }
00051 
00052 
00053 bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event)
00054 {
00055   const GRFFile *file = GetEngineGRF(v->engine_type);
00056   uint16 callback;
00057 
00058   /* If the engine has no GRF ID associated it can't ever play any new sounds */
00059   if (file == NULL) return false;
00060 
00061   /* Check that the vehicle type uses the sound effect callback */
00062   if (!HasBit(EngInfo(v->engine_type)->callbackmask, CBM_VEHICLE_SOUND_EFFECT)) return false;
00063 
00064   callback = GetVehicleCallback(CBID_VEHICLE_SOUND_EFFECT, event, 0, v->engine_type, v);
00065   if (callback == CALLBACK_FAILED) return false;
00066   if (callback >= GetNumOriginalSounds()) callback += file->sound_offset - GetNumOriginalSounds();
00067 
00068   if (callback < GetNumSounds()) SndPlayVehicleFx((SoundFx)callback, v);
00069   return true;
00070 }
00071 
00072 bool PlayHouseSound(uint16 sound_id, TileIndex tile)
00073 {
00074   if (sound_id < GetNumOriginalSounds()) {
00075     SndPlayTileFx((SoundFx)sound_id, tile);
00076     return true;
00077   }
00078   return false;
00079 }

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