X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fobject%2Fambient_sound.cpp;h=43ffbdeda743eb033b8c4115e188dc4e7366bfa1;hb=ab9eab4c870195c2b60ce76b77044c35b31e8806;hp=31e3f3a0eb1741b98baecc513a021f3b2270eca0;hpb=f1e15f44f709d6b4fa45e858dc12d7d701ae8ddc;p=supertux.git

diff --git a/src/object/ambient_sound.cpp b/src/object/ambient_sound.cpp
index 31e3f3a0e..43ffbdeda 100644
--- a/src/object/ambient_sound.cpp
+++ b/src/object/ambient_sound.cpp
@@ -1,6 +1,7 @@
-// ambient_sound.cpp   basti_
+//  $Id$
 //
 //  SuperTux
+//  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
 //
 //  This program is free software; you can redistribute it and/or
 //  modify it under the terms of the GNU General Public License
@@ -11,52 +12,106 @@
 //  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.
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
 #include <config.h>
 
 #include <math.h>
-
-#include "ambient_sound.h"
-#include "object_factory.h"
-#include "lisp/lisp.h"
-#include "sector.h"
-
-/***
- *  Ambient Sound Source, beta version. Features:
- *
- *  - "disc" like structure. Full volume up to some distance
- *    (distance_bias) to the source, then fading proportional to
- *    inverse square distance
- *  
- *  This is experimental, clicks sometimes and still leaks mem 
- *
- *      basti_ 
- */
+#include <stdexcept>
+#include <iostream>
+
+#include "ambient_sound.hpp"
+#include "object_factory.hpp"
+#include "lisp/lisp.hpp"
+#include "sector.hpp"
+#include "audio/sound_manager.hpp"
+#include "audio/sound_source.hpp"
+#include "log.hpp"
+#include "scripting/squirrel_util.hpp"
 
 AmbientSound::AmbientSound(const lisp::Lisp& lisp)
 {
+  name="";
+  position.x = 0;
+  position.y = 0;
+
+  dimension.x = 0;
+  dimension.y = 0;
+
+  distance_factor = 0;
+  distance_bias = 0;
+  maximumvolume = 1;
+  sample = "";
+  currentvolume = 0;
+
+  if (!(lisp.get("x", position.x)&&lisp.get("y", position.y))) {
+    log_warning << "No Position in ambient_sound" << std::endl;
+  }
+
+  lisp.get("name" , name);
+  lisp.get("width" , dimension.x);
+  lisp.get("height", dimension.y);
 
-  //  position=pos;
-  lisp.get("x", position.x);
-  lisp.get("y", position.y);
   lisp.get("distance_factor",distance_factor);
   lisp.get("distance_bias"  ,distance_bias  );
   lisp.get("sample"         ,sample         );
+  lisp.get("volume"         ,maximumvolume  );
+
+  // set dimension to zero if smaller than 64, which is default size in flexlay
+
+  if ((dimension.x <= 64) || (dimension.y <= 64)) {
+    dimension.x = 0;
+    dimension.y = 0;
+  }
+
+  // square all distances (saves us a sqrt later)
+
+  distance_bias*=distance_bias;
+  distance_factor*=distance_factor;
+
+  // set default silence_distance
 
   if (distance_factor == 0)
     silence_distance = 10e99;
   else
-    silence_distance = distance_factor*10e2;
+    silence_distance = 1/distance_factor;
+
+  lisp.get("silence_distance",silence_distance);
 
-  volume_ptr=NULL;
-  playing=0;
-  startPlaying();
+  sound_source = 0; // not playing at the beginning
+  latency=0;
 }
 
+AmbientSound::AmbientSound(Vector pos, float factor, float bias, float vol, std::string file)
+{
+  position.x=pos.x;
+  position.y=pos.y;
+
+  dimension.x=0;
+  dimension.y=0;
+
+  distance_factor=factor*factor;
+  distance_bias=bias*bias;
+  maximumvolume=vol;
+  sample=file;
+
+  // set default silence_distance
+
+  if (distance_factor == 0)
+    silence_distance = 10e99;
+  else
+    silence_distance = 1/distance_factor;
+
+  sound_source = 0; // not playing at the beginning
+  latency=0;
+}
+
+AmbientSound::~AmbientSound() {
+  stop_playing();
+}
 
 void
 AmbientSound::hit(Player& )
@@ -64,38 +119,124 @@ AmbientSound::hit(Player& )
 }
 
 void
-AmbientSound::startPlaying()
-{
-  playing=sound_manager->play_sound(sample,-1);
-  volume_ptr=new float[2];
-  volume_ptr[0]=0;
-  volume_ptr[1]=0;
-  sound_manager->register_effect(playing,&SoundManager::volume_adjust,
-				 NULL,(void *)volume_ptr);
+AmbientSound::stop_playing() {
+  delete sound_source;
+  sound_source = 0;
 }
 
 void
-AmbientSound::action(float) 
+AmbientSound::start_playing()
 {
-  float dx=Sector::current()->player->get_pos().x-position.x;
-  float dy=Sector::current()->player->get_pos().y-position.y;
-  float distance=sqrt(dx*dx+dy*dy);
+  try {
+    sound_source = sound_manager->create_sound_source(sample);
+    if(!sound_source)
+      throw std::runtime_error("file not found");
+
+    sound_source->set_gain(0);
+    sound_source->set_looping(true);
+    currentvolume=targetvolume=1e-20;
+    sound_source->play();
+  } catch(std::exception& e) {
+    log_warning << "Couldn't play '" << sample << "': " << e.what() << "" << std::endl;
+    delete sound_source;
+    sound_source = 0;
+    remove_me();
+  }
+}
 
-  distance-=distance_bias;
+void
+AmbientSound::update(float deltat)
+{
+  if (latency-- <= 0) {
+    float px,py;
+    float rx,ry;
+
+    // Player position
+    px=Sector::current()->player->get_pos().x;
+    py=Sector::current()->player->get_pos().y;
+
+    // Relate to which point in the area
+    rx=px<position.x?position.x:
+      (px<position.x+dimension.x?px:position.x+dimension.x);
+    ry=py<position.y?position.y:
+      (py<position.y+dimension.y?py:position.y+dimension.y);
+
+    // calculate square of distance
+    float sqrdistance=(px-rx)*(px-rx)+(py-ry)*(py-ry);
+    sqrdistance-=distance_bias;
+
+    // inside the bias: full volume (distance 0)
+    if (sqrdistance<0)
+      sqrdistance=0;
+
+    // calculate target volume - will never become 0
+    targetvolume=1/(1+sqrdistance*distance_factor);
+    float rise=targetvolume/currentvolume;
+
+    // rise/fall half life?
+    currentvolume*=pow(rise,deltat*10);
+    currentvolume += 1e-6; // volume is at least 1e-6 (0 would never rise)
+
+    if (sound_source != 0) {
+
+      // set the volume
+      sound_source->set_gain(currentvolume*maximumvolume);
+
+      if (sqrdistance>=silence_distance && currentvolume<1e-3)
+	stop_playing();
+      latency=0;
+    } else {
+      if (sqrdistance<silence_distance) {
+	start_playing();
+	latency=0;
+      }
+      else // set a reasonable latency
+	latency=(int)(0.001/distance_factor);
+      //(int)(10*((sqrdistance-silence_distance)/silence_distance));
+    }
+  }
+
+  // heuristically measured "good" latency maximum
+
+  //  if (latency>0.001/distance_factor)
+  // latency=
+}
 
-  if (distance<0)
-    distance=0;
+void
+AmbientSound::draw(DrawingContext &)
+{
+}
 
-  volume_ptr[0]=1/(1+distance*distance_factor); // inverse square of distance
+void
+AmbientSound::expose(HSQUIRRELVM vm, SQInteger table_idx)
+{
+  Scripting::AmbientSound* interface = static_cast<Scripting::AmbientSound*> (this);
+  expose_object(vm, table_idx, interface, name, false);
+}
 
+void
+AmbientSound::unexpose(HSQUIRRELVM vm, SQInteger table_idx)
+{
+  Scripting::unexpose_object(vm, table_idx, name);
 }
 
 void
-AmbientSound::draw(DrawingContext &dc) 
+AmbientSound::set_pos(float x, float y)
 {
-  return;
-  sprite->draw(dc,position,1);
+  position.x = x;
+  position.y = y;
+}
 
+float
+AmbientSound::get_pos_x() const
+{
+  return position.x;
+}
+
+float
+AmbientSound::get_pos_y() const
+{
+  return position.y;
 }
 
 IMPLEMENT_FACTORY(AmbientSound, "ambient_sound");