src/nSoundListener.cpp

   1 #include "nSoundListener.h"
   2 #include "nSoundSystem.h"
   3 #ifdef NEIA
   4 #include "../scene/nSceneCamera.h"
   5 #include "OgreCamera.h"
   6 #endif
   7
   8 #include "AL/al.h"
   9
  10 nSoundListener::nSoundListener(nSoundSystem * parent) :
  11     QObject(parent)
  12 {
  13 #ifdef NEIA
  14     m_camera = 0;
  15 #endif
  16     m_updating = true;
  17 }
  18
  19 #ifdef NEIA
  20 void nSoundListener::setSourceCamera(nSceneCamera * cam)
  21 {
  22     if(m_camera)
  23     {
  24         disconnect(this, SLOT(cameraDestroyed()));
  25     }
  26     m_camera = cam;
  27     if(m_camera) //camera can be set to null
  28     {
  29         m_camLastPos = m_camera->ogreCamera()->getPosition();
  30         connect(m_camera, SIGNAL(destroyed()), SLOT(cameraDestroyed()));
  31     }
  32 }
  33 void nSoundListener::cameraDestroyed()
  34 {
  35     disconnect(this, SLOT(cameraDestroyed()));
  36     m_camera = 0;
  37 }
  38 #endif
  39
  40 void nSoundListener::update(qreal frameTime)
  41 {
  42 #ifdef NEIA
  43     if(m_updating && m_camera)
  44     {
  45         nVec3 pos(m_camera->ogreCamera()->getRealPosition()),
  46                 dir(m_camera->ogreCamera()->getRealDirection()),
  47                 up(m_camera->ogreCamera()->getRealUp());
  48         nVec3 vel = pos - m_camLastPos;
  49         m_camLastPos = pos;
  50         vel/=frameTime;
  51
  52
  53         updateManual(QVector3D());
  54     }
  55 #endif
  56
  57 }
  58
  59 void nSoundListener::updateManual(QVector3D pos, QVector3D dir, QVector3D up, QVector3D vel)
  60 {
  61     float orient[6];
  62     orient[0] = dir[0];
  63     orient[1] = dir[1];
  64     orient[2] = dir[2];
  65     orient[3] = up[0];
  66     orient[4] = up[1];
  67     orient[5] = up[2];
  68
  69     alGetError();
  70     alListener3f(AL_POSITION, pos[0], pos[1], pos[2]);
  71     alListenerfv(AL_ORIENTATION, orient);
  72     alListener3f(AL_VELOCITY, vel[0], vel[1], vel[2]);
  73
  74     if(alGetError()!=AL_NO_ERROR)
  75         throw QString("nSoundListener: Failed to update listener transformations.");
  76 }