Initial revision of fg_fx.[ch]xx

src/Sound/Makefile.am

@@ -2,6 +2,7 @@ noinst_LIBRARIES = libSound.a
 
 libSound_a_SOURCES = \
 	beacon.cxx beacon.hxx \
+	fg_fx.cxx fg_fx.hxx \
 	morse.cxx morse.hxx \
 	soundmgr.cxx soundmgr.hxx
 

src/Sound/fg_fx.cxx

@@ -0,0 +1,228 @@
+// fgfx.cxx -- Sound effect management class implementation
+//
+// Started by David Megginson, October 2001
+// (Reuses some code from main.cxx, probably by Curtis Olson)
+//
+// Copyright (C) 2001  Curtis L. Olson - curt@flightgear.org
+//
+// This program 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.
+//
+// This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+#include "fg_fx.hxx"
+
+// FIXME: remove direct dependencies
+#include <Controls/controls.hxx>
+#include <FDM/flight.hxx>
+#include <Main/fg_props.hxx>
+
+
+FGFX::FGFX ()
+  : _is_cranking(false),
+    _is_stalling(false),
+    _is_rumbling(false),
+    _engine(0),
+    _crank(0),
+    _wind(0),
+    _stall(0),
+    _rumble(0),
+    _flaps(0),
+    _squeal(0),
+    _click(0)
+{
+}
+
+FGFX::~FGFX ()
+{
+				// FIXME: is this right, or does the
+				// sound manager assume pointer ownership?
+  delete _engine;
+  delete _crank;
+  delete _wind;
+  delete _stall;
+  delete _rumble;
+
+  delete _flaps;
+  delete _squeal;
+  delete _click;
+}
+
+
+void
+FGFX::init ()
+{
+  FGSoundMgr * mgr = globals->get_soundmgr();
+
+  //
+  // Create and add the engine sound
+  //
+  _engine =
+    new FGSimpleSound(fgGetString("/sim/sounds/engine", "Sounds/wasp.wav"));
+  mgr->add(_engine, "engine loop");
+  mgr->play_looped("engine loop");
+
+  SG_LOG( SG_GENERAL, SG_INFO,
+	  "Rate = " << _engine->get_sample()->getRate()
+	  << "  Bps = " << _engine->get_sample()->getBps()
+	  << "  Stereo = " << _engine->get_sample()->getStereo() );
+
+
+  //
+  // Create and add the cranking sound.
+  //
+  _crank =
+    new FGSimpleSound(fgGetString("/sim/sounds/cranking",
+				  "Sounds/cranking.wav"));
+  mgr->add(_crank, "crank");
+  _crank->set_pitch(1.5);
+  _crank->set_volume(0.25);
+
+
+  //
+  // Create and add the wind noise.
+  //
+  _wind =
+    new FGSimpleSound(fgGetString("/sim/sounds/wind", "Sounds/wind.wav"));
+  mgr->add(_wind, "wind");
+  mgr->play_looped("wind");
+
+
+  //
+  // Create and add the stall noise.
+  //
+  _stall = new FGSimpleSound(fgGetString("/sim/sounds/stall",
+					 "Sounds/stall.wav"));
+  mgr->add(_stall, "stall");
+
+  //
+  // Create and add the rumble noise.
+  //
+  _rumble = new FGSimpleSound(fgGetString("/sim/sounds/rumble",
+					  "Sounds/rumble.wav"));
+  mgr->add(_rumble, "rumble");
+
+  //
+  // Create and add the squeal noise.
+  //
+  _squeal = new FGSimpleSound(fgGetString("/sim/sounds/squeal",
+					  "Sounds/squeal.wav"));
+  mgr->add(_squeal, "squeal");
+
+  //
+  // Create and add the click noise.
+  _click = new FGSimpleSound(fgGetString("/sim/sounds/click",
+					 "Sounds/click.wav"));
+  mgr->add(_click, "click");
+}
+
+void
+FGFX::bind ()
+{
+}
+
+void
+FGFX::unbind ()
+{
+}
+
+void
+FGFX::update ()
+{
+  FGSoundMgr * mgr = globals->get_soundmgr();
+
+
+  ////////////////////////////////////////////////////////////////////
+  // Update the engine sound.
+  ////////////////////////////////////////////////////////////////////
+
+  if (fgGetBool("/engines/engine[0]/running")) { // FIXME
+	  // pitch corresponds to rpm
+	  // volume corresponds to manifold pressure
+
+    double rpm_factor;
+    if (cur_fdm_state->get_engine(0) != NULL)
+      rpm_factor = cur_fdm_state->get_engine(0)->get_RPM() / 2500.0;
+    else
+      rpm_factor = 1.0;
+
+    double pitch = 0.3 + rpm_factor * 3.0;
+
+    // don't run at absurdly slow rates -- not realistic
+    // and sounds bad to boot.  :-)
+    if (pitch < 0.7)
+      pitch = 0.7;
+    if (pitch > 5.0)
+      pitch = 5.0;
+
+    double mp_factor;
+    if (cur_fdm_state->get_engine(0) != NULL)
+      mp_factor = cur_fdm_state->get_engine(0)->get_Manifold_Pressure() / 100;
+    else
+      mp_factor = 0.3;
+
+    double volume = 0.15 + mp_factor / 2.0;
+
+    if (volume < 0.15)
+      volume = 0.15;
+    if (volume > 0.5)
+      volume = 0.5;
+
+    _engine->set_pitch( pitch );
+    _engine->set_volume( volume );
+  } else {
+    _engine->set_pitch(0.0);
+    _engine->set_volume(0.0);
+  }
+
+
+  ////////////////////////////////////////////////////////////////////
+  // Update the cranking sound.
+  ////////////////////////////////////////////////////////////////////
+
+  if (fgGetBool("/engines/engine[0]/cranking")) { // FIXME
+    if(!_is_cranking) {
+      globals->get_soundmgr()->play_looped("crank");
+      _is_cranking = true;
+    }
+  } else {
+    if(_is_cranking) {
+      globals->get_soundmgr()->stop("crank");
+      _is_cranking = false;
+    }
+  }
+
+
+  ////////////////////////////////////////////////////////////////////
+  // Update the wind noise.
+  ////////////////////////////////////////////////////////////////////
+
+  float rel_wind = cur_fdm_state->get_V_rel_wind();
+  float volume = rel_wind/300.0;	// FIXME!!!
+  _wind->set_volume(volume);
+
+
+  // TODO: stall
+
+  // TODO: rumble
+
+  // TODO: flaps
+
+  // TODO: squeal
+
+  // TODO: click
+
+}
+
+// end of fg_fx.cxx

src/Sound/fg_fx.hxx

@@ -0,0 +1,80 @@
+// fgfx.hxx -- Sound effect management class
+//
+// Started by David Megginson, October 2001
+// (Reuses some code from main.cxx, probably by Curtis Olson)
+//
+// Copyright (C) 2001  Curtis L. Olson - curt@flightgear.org
+//
+// This program 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.
+//
+// This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+#ifndef __FGFX_HXX
+#define __FGFX_HXX 1
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <simgear/compiler.h>
+#include <Main/fgfs.hxx>
+#include <Main/globals.hxx>
+
+#include "soundmgr.hxx"
+
+
+/**
+ * Generator for FlightGear sound effects.
+ *
+ * This module uses FGSoundMgr to generate sound effects based
+ * on current flight conditions.  The sound manager must be initialized
+ * before this object is.
+ */
+class FGFX : public FGSubsystem
+{
+
+public:
+
+  FGFX ();
+  virtual ~FGFX ();
+
+  virtual void init ();
+  virtual void bind ();
+  virtual void unbind ();
+  virtual void update ();
+
+private:
+  bool _is_cranking;
+  bool _is_stalling;
+  bool _is_rumbling;
+
+				// looped sounds
+  FGSimpleSound * _engine;
+  FGSimpleSound * _crank;
+  FGSimpleSound * _wind;
+  FGSimpleSound * _stall;
+  FGSimpleSound * _rumble;
+
+				// one-off sounds
+  FGSimpleSound * _flaps;
+  FGSimpleSound * _squeal;
+  FGSimpleSound * _click;
+
+};
+
+
+#endif
+
+// end of fgfx.hxx