root/as3/SiOPM/trunk/samples/Tutorials/SyncSequence.as

// Sample for synchronized play (with preset voice).
package {
    import flash.display.Sprite;
    import flash.events.*;
    import org.si.sion.*;
    import org.si.sion.utils.SiONPresetVoice;
    
    
    public class SyncSequence extends Sprite {
        // driver
        public var driver:SiONDriver = new SiONDriver();
        
        // preset voice
        public var presetVoice:SiONPresetVoice = new SiONPresetVoice();
        
        // voice
        public var voiceClick:SiONVoice;
        public var voiceKeyOn:SiONVoice;
        
        // MML data
        public var mainMelody:SiONData;
        public var clickSequence:SiONData;
        
        
        // constructor
        function SyncSequence() {
            // compile
            mainMelody    = driver.compile("t100 l8 [ccggaag4 ffeeddc4 | [ggffeed4]2 ]2")
            clickSequence = driver.compile("l16v8o6cg<c>g1");
            
            // select voice from preset
            voiceClick = presetVoice["valsound.piano8"];
            voiceKeyOn = presetVoice["valsound.wind1"];
            
            // listen click
            stage.addEventListener("click",   _onClick);
            stage.addEventListener("keyDown", _onKeyOn);

            // play main melody
            driver.play(mainMelody);
        }
        
        
        // click to play sequence. with synchronizaion.
        private function _onClick(e:Event) : void {
            // play with length=0(play all of sequence), delay=0(no delay), quantize=2(8th beat)
            driver.sequenceOn(clickSequence, voiceClick, 0, 0, 2);
        }
        
        
        // key down ("1" to "9") to play single note
        private function _onKeyOn(e:KeyboardEvent) : void {
            // calculate note number (60=o5c=key"1")
            var noteNum:int = e.charCode - ("1".charCodeAt()) + 60;
            // key 1-9 to play note
            if (60<=noteNum && noteNum<=68) {
                // play with length=1(8th note), delay=0(no delay), quantize=2(8th beat)
                driver.noteOn(noteNum, voiceKeyOn, 2, 0, 2);
            }
        }
    }
}