Sound.cpp

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/*
    This source file is part of Rigs of Rods
    Copyright 2005-2012 Pierre-Michel Ricordel
    Copyright 2007-2012 Thomas Fischer
 
    For more information, see http://www.rigsofrods.org/
 
    Rigs of Rods is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License version 3, as
    published by the Free Software Foundation.
 
    Rigs of Rods 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 Rigs of Rods. If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifdef USE_OPENAL
 
#include "Sound.h"
#include "SoundManager.h"
 
using namespace Ogre;
using namespace RoR;
 
Sound::Sound(ALuint buffer, SoundManager* soundManager, int sourceIndex) :
    buffer(buffer)
    , sound_manager(soundManager)
    , source_index(sourceIndex)
    , audibility(0.0f)
    , gain(0.0f)
    , pitch(1.0f)
    , position(Vector3::ZERO)
    , velocity(Vector3::ZERO)
    , enabled(true)
    , loop(false)
    , should_play(false)
    , hardware_index(-1)
{
}
Sound::Sound(ALuint buffer, SoundManager* soundManager, int sourceIndex) : {…}
 
void Sound::computeAudibility(Vector3 pos)
{
    // disable sound?
    if (!enabled)
    {
        audibility = 0.0f;
        return;
    }
 
    // first check if the sound is finished!
    if (!loop && should_play && hardware_index != -1)
    {
        int value = 0;
        alGetSourcei((ALuint)sound_manager->getHardwareSource(hardware_index), AL_SOURCE_STATE, &value);
        if (value != AL_PLAYING)
        {
            should_play = false;
        }
    }
 
    // should it play at all?
    if (!should_play || gain == 0.0f)
    {
        audibility = 0.0f;
        return;
    }
 
    float distance = (pos - position).length();
 
    if (distance > sound_manager->MAX_DISTANCE)
    {
        audibility = 0.0f;
    }
    else if (distance < sound_manager->REFERENCE_DISTANCE)
    {
        audibility = gain;
    }
    else
    {
        audibility = gain * (sound_manager->REFERENCE_DISTANCE / (sound_manager->REFERENCE_DISTANCE + (sound_manager->ROLLOFF_FACTOR * (distance - sound_manager->REFERENCE_DISTANCE))));
    }
}
void Sound::computeAudibility(Vector3 pos) {…}
 
bool Sound::isPlaying()
{
    if (hardware_index != -1)
    {
        int value = 0;
        alGetSourcei((ALuint)sound_manager->getHardwareSource(hardware_index), AL_SOURCE_STATE, &value);
        return (value == AL_PLAYING);
    }
    return false;
}
bool Sound::isPlaying() {…}
 
void Sound::setEnabled(bool e)
{
    if (e == this->enabled)
        return;
 
    this->enabled = e;
    sound_manager->recomputeSource(source_index, REASON_PLAY, 0.0f, NULL);
}
void Sound::setEnabled(bool e) {…}
 
bool Sound::getEnabled()
{
    return enabled;
}
bool Sound::getEnabled() {…}
 
void Sound::play()
{
    should_play = true;
    sound_manager->recomputeSource(source_index, REASON_PLAY, 0.0f, NULL);
}
void Sound::play() {…}
 
void Sound::stop()
{
    should_play = false;
    sound_manager->recomputeSource(source_index, REASON_STOP, 0.0f, NULL);
}
void Sound::stop() {…}
 
void Sound::setGain(float gain_)
{
    if (gain_ == this->gain)
        return;
 
    this->gain = gain_;
    sound_manager->recomputeSource(source_index, REASON_GAIN, gain, NULL);
}
void Sound::setGain(float gain_) {…}
 
void Sound::setLoop(bool loop_)
{
    if (loop_ == this->loop)
        return;
 
    this->loop = loop_;
    sound_manager->recomputeSource(source_index, REASON_LOOP, (loop) ? 1.0f : 0.0f, NULL);
}
void Sound::setLoop(bool loop_) {…}
 
void Sound::setPitch(float pitch_)
{
    if (pitch_ == this->pitch)
        return;
 
    this->pitch = pitch_;
    sound_manager->recomputeSource(source_index, REASON_PTCH, pitch, NULL);
}
void Sound::setPitch(float pitch_) {…}
 
void Sound::setPosition(Ogre::Vector3 pos)
{
    if (pos == this->position)
        return;
 
    this->position = pos;
    sound_manager->recomputeSource(source_index, REASON_POSN, 0.0f, &pos);
}
void Sound::setPosition(Ogre::Vector3 pos) {…}
 
void Sound::setVelocity(Ogre::Vector3 vel)
{
    if (vel == this->velocity)
        return;
 
    this->velocity = vel;
    sound_manager->recomputeSource(source_index, REASON_VLCT, 0.0f, &vel);
}
void Sound::setVelocity(Ogre::Vector3 vel) {…}
 
#endif // USE_OPENAL