/**
* very basic integration of SFXR AS3 lib into Flixel, to generate sounds on the fly
* coded by Colin Mitchell (<a href="mailto:colin@muffinlabs.com">colin@muffinlabs.com</a>)
* licensed under WTFPL <a href="http://sam.zoy.org/wtfpl/<br />
" title="http://sam.zoy.org/wtfpl/<br />
">http://sam.zoy.org/wtfpl/<br />
</a> *
* usage:
* embedded sfs files
* [Embed(source = 'explosion.sfs', mimeType="application/octet-stream")] public static var ExplosionSound:Class;
* var explosion:SfxrSound;
* explosion = new SfxrSound();
* explosion.loadEmbedded(ExplosionSound);
*/
package sfxr {
import org.flixel.*;
import flash.events.Event;
import flash.utils.Endian;
import flash.utils.ByteArray;
public class SfxrSound extends FlxSound {
private var _synth:SfxrSynth;
public function SfxrSound():void {
super();
_synth = new SfxrSynth();
}
override public function loadEmbedded(EmbeddedSound:Class, Looped:Boolean=false):FlxSound {
var tmpData:ByteArray = new EmbeddedSound() as ByteArray;
stop();
init();
setSettingsFile(tmpData);
initSound();
return this;
}
private function initSound(Looped:Boolean=false):void {
_synth.cacheSound();
_looped = Looped;
updateTransform();
active = true;
updateSound();
}
public function loadSettings(string:String, looped:Boolean=false):Boolean {
if ( _synth.setSettingsString(string) == false ) {
return false;
}
initSound(looped);
return true;
}
/**
* Call this function to play the sound.
*/
override public function play():void {
_synth.playCached();
}
private function updateTransform():void {
_transform.volume = FlxG.getMuteValue()*FlxG.volume*_volume*_volumeAdjust;
if(_channel != null)
_channel.soundTransform = _transform;
}
/**
* Reads parameters from a ByteArray file
* Compatible with the original Sfxr files
* @param file ByteArray of settings data
*/
public function setSettingsFile(file:ByteArray):void {
_synth.deleteCache();
file.position = 0;
file.endian = Endian.LITTLE_ENDIAN;
var version:int = file.readInt();
if(version != 100 && version != 101 && version != 102) return;
_synth.waveType = file.readInt();
_synth.masterVolume = (version == 102) ? file.readFloat() : 0.5;
_synth.startFrequency = file.readFloat();
_synth.minFrequency = file.readFloat();
_synth.slide = file.readFloat();
_synth.deltaSlide = (version >= 101) ? file.readFloat() : 0.0;
_synth.squareDuty = file.readFloat();
_synth.dutySweep = file.readFloat();
_synth.vibratoDepth = file.readFloat();
_synth.vibratoSpeed = file.readFloat();
var unusedVibratoDelay:Number = file.readFloat();
_synth.attackTime = file.readFloat();
_synth.sustainTime = file.readFloat();
_synth.decayTime = file.readFloat();
_synth.sustainPunch = file.readFloat();
var unusedFilterOn:Boolean = file.readBoolean();
_synth.lpFilterResonance = file.readFloat();
_synth.lpFilterCutoff = file.readFloat();
_synth.lpFilterCutoffSweep = file.readFloat();
_synth.hpFilterCutoff = file.readFloat();
_synth.hpFilterCutoffSweep = file.readFloat();
_synth.phaserOffset = file.readFloat();
_synth.phaserSweep = file.readFloat();
_synth.repeatSpeed = file.readFloat();
_synth.changeSpeed = (version >= 101) ? file.readFloat() : 0.0;
_synth.changeAmount = (version >= 101) ? file.readFloat() : 0.0;
_synth.validate();
}
} // SfxrSound
} // package
