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OS3DJS.js
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OS3DJS.js
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const AudioContext = window.AudioContext || window.webkitAudioContext;
const audioCtx = new AudioContext();
var audio_listener;
let Source3D_Emits=[];
function Load3DSound(filename){
var audio = new Audio(filename);
return audio;
}
function CreateListener(entity, rolloff_factor=1, doppler_scale=1, attenuation=1){
let Listener3d = {
ent: 0,
atDummy: 0,
upDummy: 0,
listener: 0,
rolloff_factor: 1,
doppler_scale: 1,
attenuation: 1,
Update: function() {
px = EntityX(this.ent,1);
py = EntityY(this.ent,1);
pz = EntityZ(this.ent,1);
if (this.listener.positionX){
this.listener.positionX.value = px;
this.listener.positionY.value = py;
this.listener.positionZ.value = pz;
}else{
this.listener.setPosition(px,py,pz);
}
atx = px-EntityX(this.atDummy,true);
aty = py-EntityY(this.atDummy,true);
atz = pz-EntityZ(this.atDummy,true);
upx = px-EntityX(this.upDummy,true);
upy = py-EntityY(this.upDummy,true);
upz = pz-EntityZ(this.upDummy,true);
if (this.listener.forwardX){
this.listener.forwardX.value = atx;
this.listener.forwardY.value = aty;
this.listener.forwardZ.value = atz;
this.listener.upX.value = upx;
this.listener.upY.value = upy;
this.listener.upZ.value = upz;
}else{
this.listener.setOrientation(atx,aty,atz,upx,upy,upz);
}
}
}
let new_listener=Object.create(Listener3d);
new_listener.ent=entity;
new_listener.atDummy=CreatePivot(0);
new_listener.upDummy=CreatePivot(0);
EntityParent(new_listener.atDummy , new_listener.ent);
EntityParent(new_listener.upDummy,new_listener.ent);
PositionEntity(new_listener.atDummy , 0 , 0 ,-1);
PositionEntity(new_listener.upDummy , 0 , 1 , 0);
new_listener.listener = audioCtx.listener;
new_listener.rolloff_factor = rolloff_factor;
new_listener.doppler_scale = doppler_scale;
new_listener.attenuation = attenuation;
new_listener.Update();
audio_listener=new_listener;
return new_listener;
}
function EmitSound(sound , entity, loop=false){
let Source3d = {
ent: 0,
panner: 0,
Update: function() {
this.panner.positionX.value = EntityX(this.ent,1);
this.panner.positionY.value = EntityY(this.ent,1);
this.panner.positionZ.value = EntityZ(this.ent,1);
}
}
let new_source=Object.create(Source3d);
let new_sound=sound.cloneNode();
new_sound.loop=loop;
new_source.ent=entity;
new_source.panner = new PannerNode(audioCtx, {
panningModel: "HRTF",
distanceModel: "inverse",
refDistance: 1,
maxDistance: 20_000,
rolloffFactor: 1
});
new_source.Update();
new_source.panner.rolloffFactor=audio_listener.rolloff_factor;
track = new MediaElementAudioSourceNode(audioCtx, {
mediaElement: new_sound,
});
track.connect(new_source.panner).connect(audioCtx.destination);
new_sound.onended = () => {
track.disconnect();
const x=Source3D_Emits.splice(Source3D_Emits.indexOf(new_source),1);
};
new_sound.play();
Source3D_Emits.push(new_source);
return new_sound;
}
function RenderAudio(){
if (audio_listener) audio_listener.Update();
Source3D_Emits.forEach((element) => element.Update());
}