scratchfoundation/scratch-audio
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loading all sounds on project load

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This commit is contained in:
Eric Rosenbaum 2016-10-14 10:26:08 -04:00
parent 037166dbc9
commit 1f4ef3fd19
1 changed files with 12 additions and 9 deletions
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21
src/index.js
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@ -1,7 +1,7 @@
var Tone = require('tone'); var Tone = require('tone');
var Soundfont = require('soundfont-player'); var Soundfont = require('soundfont-player');
function AudioEngine () { function AudioEngine (sounds) {
// tone setup // tone setup
@ -25,8 +25,9 @@ function AudioEngine () {
// sound urls - map each url to its tone.sampler // sound urls - map each url to its tone.sampler
this.soundSamplers = []; this.soundSamplers = [];
this.loadSounds(sounds);
// soundfont setup // soundfont setup
// instrument names used by Musyng Kite soundfont, in order to // instrument names used by Musyng Kite soundfont, in order to
// match scratch instruments // match scratch instruments
@ -42,6 +43,15 @@ function AudioEngine () {
); );
} }
AudioEngine.prototype.loadSounds = function (sounds) {
for (var i=0; i<sounds.length; i++) {
var url = sounds[i].fileUrl;
var sampler = new Tone.Sampler(url, function () {
this.soundSamplers[url] = sampler;
}.bind(this)).toMaster();
}
};
AudioEngine.prototype.playSound = function (soundNum) { AudioEngine.prototype.playSound = function (soundNum) {
this.soundSamplers[soundNum].triggerAttack(); this.soundSamplers[soundNum].triggerAttack();
}; };
@ -144,13 +154,6 @@ AudioEngine.prototype.clearEffects = function () {
// }; // };
AudioEngine.prototype.loadSounds = function (sounds) {
for (var sound in sounds) {
var sampler = new Tone.Sampler(sound.fileUrl).toMaster();
this.soundSamplers[sound.fileUrl] = sampler;
}
};
AudioEngine.prototype._clamp = function (input, min, max) { AudioEngine.prototype._clamp = function (input, min, max) {
return Math.min(Math.max(input, min), max); return Math.min(Math.max(input, min), max);
}; };