-// 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
// 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"
+#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;
- position.x=0;
- position.y=0;
- distance_factor=0;
- distance_bias=0;
- maximumvolume=1;
- sample="";
+ distance_factor = 0;
+ distance_bias = 0;
+ maximumvolume = 1;
+ sample = "";
+ currentvolume = 0;
if (!(lisp.get("x", position.x)&&lisp.get("y", position.y))) {
- std::cerr << "No Position in ambient_sound" << std::endl;
+ log_warning << "No Position in ambient_sound" << std::endl;
}
+
+ lisp.get("name" , name);
+ lisp.get("width" , dimension.x);
+ lisp.get("height", dimension.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 = 1/distance_factor;
-
+
lisp.get("silence_distance",silence_distance);
- playing=-1; // not playing at the beginning
+ 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() {
void
AmbientSound::stop_playing() {
- if (playing>=0) {
- Mix_HaltChannel(playing);
- playing=-1;
- }
+ delete sound_source;
+ sound_source = 0;
}
void
AmbientSound::start_playing()
{
- playing=sound_manager->play_sound(sample,-1);
- Mix_Volume(playing,0);
- currentvolume=targetvolume=1e-20;
+ 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();
+ }
}
void
-AmbientSound::update(float deltat)
+AmbientSound::update(float deltat)
{
- if (latency--<=0) {
-
- float dx=Sector::current()->player->get_pos().x-position.x;
- float dy=Sector::current()->player->get_pos().y-position.y;
- float sqrdistance=dx*dx+dy*dy;
-
+ 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-30;
+ 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 (playing>=0) {
- Mix_Volume(playing,(int)(currentvolume*maximumvolume*MIX_MAX_VOLUME));
- if (sqrdistance>=silence_distance && currentvolume<0.05)
+ if (sqrdistance>=silence_distance && currentvolume<1e-3)
stop_playing();
latency=0;
} else {
start_playing();
latency=0;
}
- else
- latency=(int)(10*((sqrdistance-silence_distance)/silence_distance));
+ else // set a reasonable latency
+ latency=(int)(0.001/distance_factor);
+ //(int)(10*((sqrdistance-silence_distance)/silence_distance));
}
-
}
- if (latency>0.001/distance_factor)
- latency=(int)(0.001/distance_factor);
+
+ // heuristically measured "good" latency maximum
+
+ // if (latency>0.001/distance_factor)
+ // latency=
}
void
-AmbientSound::draw(DrawingContext &)
+AmbientSound::draw(DrawingContext &)
{
}
+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::set_pos(float x, float y){
+ position.x = x;
+ position.y = y;
+}
+
+float
+AmbientSound::get_pos_x(){;
+ return position.x;
+}
+
+float
+AmbientSound::get_pos_y(){
+ return position.y;
+}
+
IMPLEMENT_FACTORY(AmbientSound, "ambient_sound");
projects / supertux.git / blobdiff