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/************************************************************************************
AstroMenace (Hardcore 3D space shooter with spaceship upgrade possibilities)
Copyright © 2006-2013 Michael Kurinnoy, Viewizard
AstroMenace 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, either version 3 of the License, or
(at your option) any later version.
AstroMenace 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with AstroMenace. If not, see <http://www.gnu.org/licenses/>.
Web Site: http://www.viewizard.com/
Project: http://sourceforge.net/projects/openastromenace/
E-mail: viewizard@viewizard.com
*************************************************************************************/
#include "Sound.h"
#include "Buffer.h"
#include "../System/System.h"
ALboolean CheckALError();
ALboolean CheckALUTError();
//------------------------------------------------------------------------------------
// Проигрывание звука
//------------------------------------------------------------------------------------
bool eSound::Play(const char *Name, float fVol, float fMainVol, float x, float y, float z, bool Relative, bool Loop, bool NeedReleaseStatus, int AtType)
{
Source = 0;
Age = 0.0f;
LastUpdateTime = vw_GetTime();
Group = 0;
GroupCount = 0;
SubGroup = 0;
SubGroupCount = 0;
Priority = 0;
FileName = new char[strlen(Name)+1];
strcpy(FileName,Name);
DestroyTime = -1.0f;
DestroyTimeStart = -1.0f;
NeedRelease = NeedReleaseStatus;
// находим существующий или делаем новый буфер
ALuint Buffer = vw_FindBufferIDByName(Name);
// у нас еще нет такого буфера, его надо попытаться создать
if (Buffer == 0)
{
if( vw_TestFileExtension( Name, "wav" ) || vw_TestFileExtension( Name, "WAV" ))
{
Buffer = vw_CreateSoundBufferFromWAV(Name);
}
else
{
if( vw_TestFileExtension( Name, "ogg" ) || vw_TestFileExtension( Name, "OGG" ))
Buffer = vw_CreateSoundBufferFromOGG(Name);
}
}
if (Buffer == 0) return AL_FALSE;
Volume = fVol;
MainVolume = fMainVol;
// Position of the source sound.
ALfloat SourcePos[] = { x, y, z }; // -1.0 1.0 по иксам это баланс
// Velocity of the source sound.
ALfloat SourceVel[] = { 0.0f, 0.0f, 0.0f };
// Bind the buffer with the source.
alGenSources(1, &Source);
if(!CheckALError())return AL_FALSE;
alSourcei (Source, AL_BUFFER, Buffer );
alSourcef (Source, AL_GAIN, fVol*fMainVol ); // фактически громкость
alSourcefv(Source, AL_POSITION, SourcePos);
alSourcefv(Source, AL_VELOCITY, SourceVel);
alSourcei (Source, AL_LOOPING, Loop );
alSourcei (Source, AL_SOURCE_RELATIVE, Relative);
alGetError(); // сброс ошибок
// параметры затухания сигнала от источника
if (AtType == 1)
{
alSourcef (Source, AL_REFERENCE_DISTANCE, 30.0f );
alSourcef (Source, AL_MAX_DISTANCE, 250.0f );
alSourcef (Source, AL_ROLLOFF_FACTOR, 0.5f );
alGetError(); // сброс ошибок
}
else
if (AtType == 2)
{
alSourcef (Source, AL_REFERENCE_DISTANCE, 150.0f );
alSourcef (Source, AL_MAX_DISTANCE, 600.0f );
alSourcef (Source, AL_ROLLOFF_FACTOR, 0.2f );
alGetError(); // сброс ошибок
}
alSourcePlay(Source);
if(!CheckALError()) return AL_FALSE;
return AL_TRUE;
}
//------------------------------------------------------------------------------------
// перезапуск
//------------------------------------------------------------------------------------
void eSound::Replay()
{
// если это не источник, уходим
if (!alIsSource(Source)) return;
alSourceRewind(Source);
alSourcePlay(Source);
}
//------------------------------------------------------------------------------------
// остановка
//------------------------------------------------------------------------------------
void eSound::Stop(float StopDelay)
{
// если это не источник, уходим
if (!alIsSource(Source)) return;
if (StopDelay < 0.0f) StopDelay = 0.0f;
if (StopDelay == 0.0f)
{
alSourceStop(Source);
alGetError(); // сброс ошибок
}
else
{
DestroyTimeStart = DestroyTime = StopDelay;
}
}
//------------------------------------------------------------------------------------
// для 3д звука установка положения (баланса)
//------------------------------------------------------------------------------------
void eSound::SetLocation(float x, float y, float z)
{
// если это не источник, уходим
if (!alIsSource(Source)) return;
ALfloat SourcePos[] = { x, y, z };
alSourcefv(Source, AL_POSITION, SourcePos);
alGetError(); // сброс ошибок
}
//------------------------------------------------------------------------------------
// установка громкости
//------------------------------------------------------------------------------------
void eSound::SetMainVolume(float NewMainVolume)
{
// если это не источник, уходим
if (!alIsSource(Source)) return;
MainVolume = NewMainVolume;
alSourcef (Source, AL_GAIN, MainVolume*Volume );
alGetError(); // сброс ошибок
}
//------------------------------------------------------------------------------------
// установка информации о звуке
//------------------------------------------------------------------------------------
void eSound::SetInfo(int NewGroup, int NewGroupCount, int NewSubGroup, int NewSubGroupCount, int NewPriority)
{
Group = NewGroup;
GroupCount = NewGroupCount;
SubGroup = NewSubGroup;
SubGroupCount = NewSubGroupCount;
Priority = NewPriority;
}
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