root/as3/SiOPM/trunk/samples/Tutorials/SyncSequence2.as

// Sample for synchronized play 2 (start and stop)
package {
    import flash.display.*;
    import flash.events.*;
    import org.si.sion.*;
    import org.si.sion.events.*;
    
    
    public class SyncSequence2 extends Sprite {
        // driver
        public var driver:SiONDriver = new SiONDriver();
        
        // voice (%5,0(sine wave) with attackRate=63 and releaseRate=32)
        public var sinVoice:SiONVoice = new SiONVoice(5,0,63,32);
        
        // MML data
        public var mainMelody:SiONData;
        public var arpegio:SiONData;
        

        // constructor
        function SyncSequence2() {
            // compile with event trigger command (%t)
            mainMelody = driver.compile("t100 l8 [ccggaag4 ffeeddc4 | [ggffeed4]2 ]2");
            // loops infinitly by "$" command
            arpegio = driver.compile("o6q1l16$c<c>g<g>;o4l4s28,-32q0$c");
            
            // listen triggers
            stage.addEventListener("mouseDown", _onMouseDown);
            stage.addEventListener("mouseUp",   _onMouseUp);
            
            // play main melody
            driver.play(mainMelody);
        }
        
        
        private function _onMouseDown(e:MouseEvent) : void {
            // play sequence with track id of 1. And you can get delay time from returned value.
            var delay:Number = driver.sequenceOn(arpegio, sinVoice, 0, 0, 4, 1)/44.1;
        }
        
        
        private function _onMouseUp(e:MouseEvent) : void {
            // stop track with the id of 1. stop without synchronization.
            driver.sequenceOff(1);
        }
    }
}