SiON practice2

by k2syndrome_g 15 Feb 2011

Tags

SiON
Embed

/**
 * Copyright k2syndrome_g ( http://wonderfl.net/user/k2syndrome_g )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/2jKy
 */

// forked from k2syndrome_g's SiON practice1
package {
    import flash.events.Event;
    import flash.display.*
    import org.si.sion.*;
    import org.si.sion.events.*;
    public class ABCSong extends Sprite {
        //ドライバ
        public var driver:SiONDriver=new SiONDriver();
        //MML data
        public var mainMelody:SiONData;
        public function ABCSong() {
            mainMelody=driver.compile("%t0,1,1 t100 l8 [ccggaag4 ffeeddc4 | [ggffeed4]2 ]2");
            driver.addEventListener(SiONTrackEvent.NOTE_ON_FRAME,onNoteOn);
            driver.addEventListener(SiONTrackEvent.NOTE_OFF_FRAME,onNoteOff);
            addEventListener(Event.ENTER_FRAME,onEnterFrame);
            driver.play(mainMelody);
        }
        private function onNoteOn(e:SiONTrackEvent):void{
            createNote(e.note);
        }
        private function onNoteOff(e:SiONTrackEvent):void{
        }
        private function createNote(num:int):Shape{
            var shape:Shape=new Shape();
            shape.graphics.beginFill([0xFF8080,0x80FF80,0x8080FF,0xFFFF80][int(Math.random()*4)]);
            shape.graphics.drawCircle(0,0,Math.random()*20+10);
            shape.graphics.endFill();
            shape.x=(num-60)*30;
            shape.y=300;
            addChild(shape);
            return shape;
        }
        private function onEnterFrame(e:Event):void{
            var imax:int=numChildren;
            for(var i:int=0;i<imax;i++){
                var child:DisplayObject=getChildAt(i);
                child.y-=2;
                child.alpha*=0.98;
                if(child.y<-30||child.alpha<0.1){
                    removeChild(child);
                    imax--;
                    i--;
                }
            }
        }
    }
}