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SoundEngine.cpp
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SoundEngine.cpp
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/*
* Copyright (C) 1999-2010 Terence M. Welsh
*
* This file is part of Skyrocket.
*
* Skyrocket 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 2 of the License,
* or (at your option) any later version.
*
* Skyrocket 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*#include <Skyrocket/SoundEngine.h>
#include <Skyrocket/launchsound.h>
#include <Skyrocket/boomsound.h>
#include <Skyrocket/poppersound.h>
#include <Skyrocket/sucksound.h>
#include <Skyrocket/nukesound.h>
#include <Skyrocket/whistlesound.h>*/
#include "SoundEngine.h"
/*#include "launchsound.h"
#include "boomsound.h"
#include "poppersound.h"
#include "sucksound.h"
#include "nukesound.h"
#include "whistlesound.h"*/
#include "MacHelperFunctions.h"
// sound is about halfway attenuated at reference distance
static float reference_distance[NUM_BUFFERS] =
{10.0f, // launch sounds
10.0f,
1000.0f, // booms
1000.0f,
1000.0f,
1200.0f,
700.0f, // poppers
1500.0f, // suck
2000.0f, // nuke
700.0f // whistle
};
SoundEngine::SoundEngine(float volume){
ALvoid *launch1SoundData, *launch2SoundData, *boom1SoundData, *boom2SoundData, *boom3SoundData, *boom4SoundData, *popperSoundData, *suckSoundData, *nukeSoundData, *whistleSoundData;
ALenum launch1SoundFormat, launch2SoundFormat, boom1SoundFormat, boom2SoundFormat, boom3SoundFormat, boom4SoundFormat, popperSoundFormat, suckSoundFormat, nukeSoundFormat, whistleSoundFormat;
ALsizei launch1SoundSize, launch2SoundSize, boom1SoundSize, boom2SoundSize, boom3SoundSize, boom4SoundSize, popperSoundSize, suckSoundSize, nukeSoundSize, whistleSoundSize;
ALsizei launch1SoundFreq, launch2SoundFreq, boom1SoundFreq, boom2SoundFreq, boom3SoundFreq, boom4SoundFreq, popperSoundFreq, suckSoundFreq, nukeSoundFreq, whistleSoundFreq;
// Open device
//device = alcOpenDevice(ALubyte*)"DirectSound3D"); // specific device
device = alcOpenDevice(NULL); // default device
if(device == NULL)
return;
// Create context
context = alcCreateContext(device, NULL);
if(context == NULL)
return;
// Set active context
alcMakeContextCurrent(context);
alDistanceModel(AL_INVERSE_DISTANCE);
alDopplerVelocity(1130.0f); // Sound travels at 1130 feet/sec
alListenerf(AL_GAIN, volume); // Volume
alutLoadWAVFile((ALbyte *)PathForResourceOfType("launch1", "wav"), &launch1SoundFormat, &launch1SoundData, &launch1SoundSize, &launch1SoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("launch2", "wav"), &launch2SoundFormat, &launch2SoundData, &launch2SoundSize, &launch2SoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("boom1", "wav"), &boom1SoundFormat, &boom1SoundData, &boom1SoundSize, &boom1SoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("boom2", "wav"), &boom2SoundFormat, &boom2SoundData, &boom2SoundSize, &boom2SoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("boom3", "wav"), &boom3SoundFormat, &boom3SoundData, &boom3SoundSize, &boom3SoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("boom4", "wav"), &boom4SoundFormat, &boom4SoundData, &boom4SoundSize, &boom4SoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("poppers1", "wav"), &popperSoundFormat, &popperSoundData, &popperSoundSize, &popperSoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("sucker", "wav"), &suckSoundFormat, &suckSoundData, &suckSoundSize, &suckSoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("nuke", "wav"), &nukeSoundFormat, &nukeSoundData, &nukeSoundSize, &nukeSoundFreq);
alutLoadWAVFile((ALbyte *)PathForResourceOfType("whistle1", "wav"), &whistleSoundFormat, &whistleSoundData, &whistleSoundSize, &whistleSoundFreq);
// Initialize sound data
alGenBuffers(NUM_BUFFERS, buffers);
/*alBufferData(buffers[LAUNCH1SOUND], AL_FORMAT_MONO16, launch1SoundData, launch1SoundSize, 44100);
alBufferData(buffers[LAUNCH2SOUND], AL_FORMAT_MONO16, launch2SoundData, launch2SoundSize, 44100);
alBufferData(buffers[BOOM1SOUND], AL_FORMAT_MONO16, boom1SoundData, boom1SoundSize, 44100);
alBufferData(buffers[BOOM2SOUND], AL_FORMAT_MONO16, boom2SoundData, boom2SoundSize, 44100);
alBufferData(buffers[BOOM3SOUND], AL_FORMAT_MONO16, boom3SoundData, boom3SoundSize, 44100);
alBufferData(buffers[BOOM4SOUND], AL_FORMAT_MONO16, boom4SoundData, boom4SoundSize, 44100);
alBufferData(buffers[POPPERSOUND], AL_FORMAT_MONO16, popperSoundData, popperSoundSize, 44100);
alBufferData(buffers[SUCKSOUND], AL_FORMAT_MONO16, suckSoundData, suckSoundSize, 44100);
alBufferData(buffers[NUKESOUND], AL_FORMAT_MONO16, nukeSoundData, nukeSoundSize, 44100);
alBufferData(buffers[WHISTLESOUND], AL_FORMAT_MONO16, whistleSoundData, whistleSoundSize, 44100);*/
alEnable(ALC_MAC_OSX_CONVERT_DATA_UPON_LOADING); // if you're getting a build error on this line, it means you need to upgrade to Xcode 2.4
alBufferData(buffers[LAUNCH1SOUND], launch1SoundFormat, launch1SoundData, launch1SoundSize, launch1SoundFreq);
alBufferData(buffers[LAUNCH2SOUND], launch2SoundFormat, launch2SoundData, launch2SoundSize, launch2SoundFreq);
alBufferData(buffers[BOOM1SOUND], boom1SoundFormat, boom1SoundData, boom1SoundSize, boom1SoundFreq);
alBufferData(buffers[BOOM2SOUND], boom2SoundFormat, boom2SoundData, boom2SoundSize, boom2SoundFreq);
alBufferData(buffers[BOOM3SOUND], boom3SoundFormat, boom3SoundData, boom3SoundSize, boom3SoundFreq);
alBufferData(buffers[BOOM4SOUND], boom4SoundFormat, boom4SoundData, boom4SoundSize, boom4SoundFreq);
alBufferData(buffers[POPPERSOUND], popperSoundFormat, popperSoundData, popperSoundSize, popperSoundFreq);
alBufferData(buffers[SUCKSOUND], suckSoundFormat, suckSoundData, suckSoundSize, suckSoundFreq);
alBufferData(buffers[NUKESOUND], nukeSoundFormat, nukeSoundData, nukeSoundSize, nukeSoundFreq);
alBufferData(buffers[WHISTLESOUND], whistleSoundFormat, whistleSoundData, whistleSoundSize, whistleSoundFreq);
alutUnloadWAV(launch1SoundFormat, launch1SoundData, launch1SoundSize, launch1SoundFreq);
alutUnloadWAV(launch2SoundFormat, launch2SoundData, launch2SoundSize, launch2SoundFreq);
alutUnloadWAV(boom1SoundFormat, boom1SoundData, boom1SoundSize, boom1SoundFreq);
alutUnloadWAV(boom2SoundFormat, boom2SoundData, boom2SoundSize, boom2SoundFreq);
alutUnloadWAV(boom3SoundFormat, boom3SoundData, boom3SoundSize, boom3SoundFreq);
alutUnloadWAV(boom4SoundFormat, boom4SoundData, boom4SoundSize, boom4SoundFreq);
alutUnloadWAV(popperSoundFormat, popperSoundData, popperSoundSize, popperSoundFreq);
alutUnloadWAV(suckSoundFormat, suckSoundData, suckSoundSize, suckSoundFreq);
alutUnloadWAV(nukeSoundFormat, nukeSoundData, nukeSoundSize, nukeSoundFreq);
alutUnloadWAV(whistleSoundFormat, whistleSoundData, whistleSoundSize, whistleSoundFreq);
alGenSources(NUM_SOURCES, sources);
for(int i=0; i<NUM_SOURCES; ++i){
alSourcef(sources[i], AL_GAIN, 1.0f);
alSourcef(sources[i], AL_ROLLOFF_FACTOR, 1.0f);
alSourcei(sources[i], AL_LOOPING, AL_FALSE);
}
}
SoundEngine::~SoundEngine(){
alDeleteBuffers(NUM_BUFFERS, buffers);
alDeleteSources(NUM_SOURCES, sources);
//Release context
alcDestroyContext(context);
//Close device
alcCloseDevice(device);
}
void SoundEngine::insertSoundNode(int sound, rsVec source, rsVec observer){
rsVec dir = observer - source;
// find an available SoundNode
int index = -1;
int i = 0;
while(index < 0 && i < NUM_SOUNDNODES){
if(soundnodes[i].active == false)
index = i;
++i;
}
// escape if no SoundNode is available
if(index == -1)
return;
soundnodes[index].sound = sound;
if(soundnodes[index].sound == POPPERSOUND) // poppers have a little delay
soundnodes[index].time += 2.5f;
soundnodes[index].pos[0] = source[0];
soundnodes[index].pos[1] = source[1];
soundnodes[index].pos[2] = source[2];
// distance to sound
soundnodes[index].dist = sqrtf(dir[0] * dir[0] + dir[1] * dir[1] + dir[2] * dir[2]);
// Sound travels at 1130 feet/sec
soundnodes[index].time = soundnodes[index].dist * 0.000885f;
soundnodes[index].active = true;
}
void SoundEngine::update(float* listenerPos, float* listenerVel, float* listenerOri, float frameTime, bool slowMotion){
if(device == NULL || context == NULL)
return;
// Set current listener attributes
alListenerfv(AL_POSITION, listenerPos);
alListenerfv(AL_VELOCITY, listenerVel);
alListenerfv(AL_ORIENTATION, listenerOri);
for(int i=0; i<NUM_SOUNDNODES; ++i){
if(soundnodes[i].active == true){
soundnodes[i].time -= frameTime;
if(soundnodes[i].time <= 0.0f){
// find an available source
ALint value;
int src_index = -1;
int si = 0;
while(si < NUM_SOURCES && src_index == -1){
alGetSourcei(sources[si], AL_SOURCE_STATE, &value);
if(value != AL_PLAYING)
src_index = si;
++si;
}
// play sound if a source is available
if(src_index > -1){
alSourcei(sources[src_index], AL_BUFFER, buffers[soundnodes[i].sound]);
alSourcef(sources[src_index], AL_REFERENCE_DISTANCE, reference_distance[soundnodes[i].sound]);
alSourcefv(sources[src_index], AL_POSITION, soundnodes[i].pos);
if(slowMotion) // Slow down the sound
alSourcef(sources[src_index], AL_PITCH, 0.5f);
else // Sound at regular speed
alSourcef(sources[src_index], AL_PITCH, 1.0f);
alSourcePlay(sources[src_index]);
}
// deactivate the SoundNode
soundnodes[i].active = false;
}
}
}
}