Libs/SoundSystem/SoundSysFMOD3/Channel.cpp

   1 /*
   2 Cafu Engine, http://www.cafu.de/
   3 Copyright (c) Carsten Fuchs and other contributors.
   4 This project is licensed under the terms of the MIT license.
   5 */
   6
   7 #include "Channel.hpp"
   8 #include "SoundImpl.hpp"
   9
  10 #include "../SoundShader.hpp"
  11
  12 #include "fmod.h"           // FMOD
  13 #ifdef _WIN32
  14 #include "fmod_errors.h"    // FMOD Error Messages
  15 #endif
  16
  17 #include <iostream>
  18
  19
  20 ChannelT::ChannelT(int ChannelHandle_, const SoundImplT* Sound_)
  21     : ChannelHandle(ChannelHandle_),
  22       Sound(Sound_)
  23 {
  24 }
  25
  26
  27 void ChannelT::Update()
  28 {
  29     if (ChannelHandle==-1 || Sound==NULL) return;
  30
  31     // Translate volume.
  32     unsigned int Volume=(unsigned int)(Sound->Volume*255);
  33
  34     if(!FSOUND_SetVolume(ChannelHandle, Volume>255 ? 255 : Volume))
  35         std::cout << "FMOD3: Error setting channel volume\n";
  36
  37     // Only make 3D adjustments if the sound really is a 3D sound.
  38     if (!Sound->Is3D()) return;
  39
  40     // Note that y and z coordinate are swapped because FMOD uses another coordinate system than Cafu.
  41     const double METERS_PER_WORLD_UNIT = 0.0254;
  42
  43     float Pos[3]={ float(Sound->Position.x * METERS_PER_WORLD_UNIT),
  44                    float(Sound->Position.z * METERS_PER_WORLD_UNIT),
  45                    float(Sound->Position.y * METERS_PER_WORLD_UNIT) };
  46
  47     float Vel[3]={ float(Sound->Velocity.x * METERS_PER_WORLD_UNIT),
  48                    float(Sound->Velocity.z * METERS_PER_WORLD_UNIT),
  49                    float(Sound->Velocity.y * METERS_PER_WORLD_UNIT) };
  50
  51     // Note that direction and sound cones are ignored because they are not supported by FMOD.
  52
  53     if (!FSOUND_3D_SetAttributes(ChannelHandle, Pos, Vel))
  54         std::cout << "FMOD3: Error setting channel position and velocity\n";
  55
  56     if (!FSOUND_3D_SetMinMaxDistance(ChannelHandle, Sound->MinDistance, Sound->MaxDistance))
  57         std::cout << "FMOD3: Error setting channel min/max distance\n";
  58 }