-// 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 "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)
+AmbientSound::AmbientSound(const lisp::Lisp& lisp) :
+ MovingObject(lisp), sample(""), sound_source(0), latency(0),
+ distance_factor(0), distance_bias(0), maximumvolume(1), currentvolume(0)
{
- position.x=0;
- position.y=0;
-
- dimension.x=0;
- dimension.y=0;
-
- distance_factor=0;
- distance_bias=0;
- maximumvolume=1;
- sample="";
-
- if (!(lisp.get("x", position.x)&&lisp.get("y", position.y))) {
- std::cerr << "No Position in ambient_sound" << std::endl;
- }
-
- 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;
+
+ if ((get_width() <= 64) || (get_height() <= 64)) {
+ set_size(0, 0);
}
-
+
// square all distances (saves us a sqrt later)
distance_bias*=distance_bias;
silence_distance = 10e99;
else
silence_distance = 1/distance_factor;
-
- lisp.get("silence_distance",silence_distance);
- sound_source = 0; // not playing at the beginning
- latency=0;
+ lisp.get("silence_distance",silence_distance);
}
-AmbientSound::AmbientSound(Vector pos, float factor, float bias, float vol, std::string file)
+AmbientSound::AmbientSound(Vector pos, float factor, float bias, float vol, std::string file) :
+ sample(file), sound_source(0), latency(0), distance_factor(factor*factor),
+ distance_bias(bias*bias), maximumvolume(vol), currentvolume(0)
{
- position.x=pos.x;
- position.y=pos.y;
-
- dimension.x=0;
- dimension.y=0;
+ bbox.p1 = pos;
+ bbox.p2 = pos;
- 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() {
AmbientSound::start_playing()
{
try {
- std::string filename = "sounds/";
- filename += sample;
- filename += ".wav";
- sound_source = sound_manager->create_sound_source(filename);
+ 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) {
- std::cerr << "Couldn't play '" << sample << "': " << e.what() << "\n";
+ 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) {
-
+ 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);
+ rx=px<bbox.p1.x?bbox.p1.x:
+ (px<bbox.p2.x?px:bbox.p2.x);
+ ry=py<bbox.p1.y?bbox.p1.y:
+ (py<bbox.p2.y?py:bbox.p2.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
+ // 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)
sound_source->set_gain(currentvolume*maximumvolume);
if (sqrdistance>=silence_distance && currentvolume<1e-3)
- stop_playing();
+ stop_playing();
latency=0;
} else {
if (sqrdistance<silence_distance) {
- start_playing();
- latency=0;
+ start_playing();
+ latency=0;
}
else // set a reasonable latency
- latency=(int)(0.001/distance_factor);
+ latency=(int)(0.001/distance_factor);
//(int)(10*((sqrdistance-silence_distance)/silence_distance));
}
- }
+ }
// heuristically measured "good" latency maximum
}
void
-AmbientSound::draw(DrawingContext &)
+AmbientSound::draw(DrawingContext &)
+{
+}
+
+void
+AmbientSound::expose(HSQUIRRELVM vm, SQInteger table_idx)
+{
+ if(name.empty()) return;
+ expose_object(vm, table_idx, dynamic_cast<Scripting::AmbientSound *>(this), name, false);
+}
+
+void
+AmbientSound::unexpose(HSQUIRRELVM vm, SQInteger table_idx)
{
+ if(name.empty()) return;
+ Scripting::unexpose_object(vm, table_idx, name);
}
IMPLEMENT_FACTORY(AmbientSound, "ambient_sound");
projects / supertux.git / blobdiff