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Sound.cpp

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/*
CS Senior Project 2003
Team : Leftfield
Project : ModernWarfare
Members :
- Russ Christensen              <rchriste@cs.utah.edu>
- Todd Smith                    <tcsmith@cs.utah.edu>
- Usit Duongsaa                 <duongsaa@cs.utah.edu>
Copyright 2003 Russ Christensen, Usit Duongsaa, and Todd Smith. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 
THIS SOFTWARE IS PROVIDED BY RUSS CHRISTENSEN, USIT DUONGSAA, AND TODD SMITH ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RUSS, USIT, TODD OR OTHER CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "Sound.h"
#include <string>

using namespace std;

static const string TOK_BEGIN_SOUND_CLASSES("BEGIN CLASSES\n");
static const string TOK_END_SOUND_CLASSES("END CLASSES");
static const string TOK_BEGIN_SAMPLES("BEGIN SAMPLES\n");
static const string TOK_END_SAMPLES("END SAMPLES");

static const float VOL_STEP(0.005f);
// pointer to the instance of the sound manager
Sound* Sound::s_pObj;
float Sound::s_masterSongVol(1.0f);
float Sound::s_masterSFXVol(1.0f);
int Sound::s_songHandle;

void Sound::init(istream &in)
{
  s_pObj = &Sound::getObj();

  assert(s_pObj->m_sound.Create(sys_getWindowHandle()) == NDXERR_OK);

  // load the sound classes
  ostringstream dump;
  dump << in.rdbuf();
  string rawdata = dump.str();

  size_t start = rawdata.find(TOK_BEGIN_SOUND_CLASSES)+TOK_BEGIN_SOUND_CLASSES.size();
  size_t len = rawdata.find(TOK_END_SOUND_CLASSES) - start;
  istringstream classData(rawdata.substr(start, len));

  string line;
  while(getline(classData, line))
  {
    // format of the sound class data:
    // CLASS_NUM WAV_FILE_NAME NUMBER_OF_BUFFERS
    istringstream is(line);
    int classNum;
    string s;
    int bc;
    is >> classNum >> s >> bc;
    s_pObj->m_sndClass[classNum].push_back(sampleFromWAV(const_cast<LPSTR>(s.data()), bc));

        for( int i=0; i<NUM_CLASSES; i++ )
                s_pObj->lastRandomSelected.push_back(-1);
  }

  // load the rest of the samples
  start = rawdata.find(TOK_BEGIN_SAMPLES)+TOK_BEGIN_SAMPLES.size();
  len = rawdata.find(TOK_END_SAMPLES) - start;
  istringstream samples(rawdata.substr(start, len));

  while(getline(samples, line))
  {
    // format of the sound samples data:
    // WAV_FILE_NAME NUMBER_OF_BUFFERS
    istringstream is(line);
    string s;
    int bc;
    is >> s >> bc;
    s_pObj->m_samples.push_back(sampleFromWAV(const_cast<LPSTR>(s.data()), bc));
  }

  s_pObj->currentMusic = -1;
}

NDX_Sample* Sound::sampleFromWAV(LPSTR fn, int bufCount)
{
  NDX_Sample *s = new NDX_Sample();
  if( (s->LoadWAV(&s_pObj->m_sound, fn, bufCount)) != NDXERR_OK )
    throw Error(string("Sound::Unable to load: ")+string(fn));
  return s;
}

void Sound::shutdown()
{
  vector<NDX_Sample*>::iterator iter;
  for(int i=0; i<NUM_CLASSES; ++i)
  {
    for(iter = s_pObj->m_sndClass[i].begin(); iter != s_pObj->m_sndClass[i].end(); ++iter)
    {
      (*iter)->StopAll();
      delete *iter;
    }
  }
  for(iter = s_pObj->m_samples.begin(); iter != s_pObj->m_samples.end(); ++iter)
  {
    (*iter)->StopAll();
    delete *iter;
  }
  s_pObj->releaseObj();
}

void Sound::playRandomSound(int soundClass, float volume)
{
        int N = (int)s_pObj->m_sndClass[soundClass].size();
        size_t idx = sys_localRandInt() % N;

        if( N>1 && idx==s_pObj->lastRandomSelected[soundClass] )                        // don't pick the same thing twice
                idx = (idx+1) % N;
        s_pObj->lastRandomSelected[soundClass] = (int)idx;
                
        s_pObj->m_sndClass[soundClass][idx]->Play(NDX_CALCVOLUME(volume));
}

void Sound::play(int sample, float volume) 
{ 
  s_pObj-> m_samples[sample]->Play(NDX_CALCVOLUME(volume)); 
}


void Sound::playMusic(int sample, float volume)
{
        if( s_pObj->currentMusic!=-1 ) s_pObj->stop(s_pObj->currentMusic);
  s_pObj->m_samples[sample]->Loop(NDX_CALCVOLUME(s_masterSongVol), &s_songHandle);
        s_pObj->currentMusic = sample;
}

void Sound::loop(int sample, float volume) 
{ 
  s_pObj->m_samples[sample]->Loop(NDX_CALCVOLUME(volume)); 
}

void Sound::stop(int sample) 
{ 
  s_pObj->m_samples[sample]->StopAll(); 
}

const vector<NDX_Sample*>& Sound::samples() 
{ 
  return s_pObj->m_samples; 
}

void Sound::increaseSongVol()
{
  if(s_masterSongVol < 1.0f)
  {
    s_masterSongVol += VOL_STEP;
    s_pObj->m_samples[s_pObj->currentMusic]->SetVolume(s_songHandle, NDX_CALCVOLUME(s_masterSongVol));
  }
}

void Sound::decreaseSongVol()
{
  if(s_masterSongVol > 0.0f)  
  {
    s_masterSongVol -= VOL_STEP;
    s_pObj->m_samples[s_pObj->currentMusic]->SetVolume(s_songHandle, NDX_CALCVOLUME(s_masterSongVol));
  }
}

void Sound::increaseSFXVol()
{
  if(s_masterSFXVol < 1.0f)
    s_masterSFXVol += VOL_STEP;
}

void Sound::decreaseSFXVol()
{
  if(s_masterSFXVol > 0.0f)  
    s_masterSFXVol -= VOL_STEP;

}

float Sound::getMasterSFXVol()
{
        return s_masterSFXVol;
}

float Sound::getMasterSongVol()
{
        return s_masterSongVol;
}

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