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soundEffect.js
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soundEffect.js
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goog.provide('pl.SoundEffect');
/**
@constructor
@param {string} name
@param {!Array.<string>} locations
@param {number} simulCount
*/
pl.SoundEffect = function(name, locations, simulCount) {
/**
@private
@type {!Array.<!Element>}
*/
this.m_audios = new Array();
/**
@private
@type {number}
*/
this.m_maxSimul = simulCount;
/**
@private
@type {number}
*/
this.m_currSimul = 0;
var existing = document.getElementsByClassName('audio_' + name);
for (var i = 0; i < existing.length; i++) {
this.m_audios.push(existing[i]);
}
for (var j = existing.length; j < simulCount; j++) {
this.m_audios.push(pl.SoundEffect.create(name, locations));
}
};
/**
@return {Element}
*/
pl.SoundEffect.prototype.play = function() {
// get the next audio
this.m_currSimul++;
this.m_currSimul %= this.m_maxSimul;
var audio = this.m_audios[this.m_currSimul];
if (goog.userAgent.WEBKIT) {
goog.array.forEach(audio.getElementsByTagName('source'), function(element, index, array) {
var location = element.src;
element.src = location;
});
audio.load();
}
audio.play();
return audio;
};
/**
* @param {string} name of the audio being added.
* @param {!Array.<!Array.<string>>} data
* @return {Element}
*/
pl.SoundEffect.create = function(name, data) {
var holder = document.getElementById(pl.SoundEffect.s_audioHolderId);
if (holder === undefined || holder == null) {
holder = document.createElement('div');
holder.id = pl.SoundEffect.s_audioHolderId;
holder.style['display'] = 'none';
document.body.appendChild(holder);
}
var audio = document.createElement('audio');
audio.className = 'audio_' + name;
holder.appendChild(audio);
for (var index in data) {
var source = document.createElement('source');
source.src = data[index][0];
source.type = data[index][1];
audio.appendChild(source);
}
return audio;
};
/**
@private
@type {string}
@const
*/
pl.SoundEffect.s_audioHolderId = '_audios';