actionscript 3 - Organizing Long Scripts In Separate Files? -

in attempt organize code, i'm trying split (lengthy) main controller class separate files, but new files must still have access variables , functions of main controller class.

i'm trying cut , paste code controller class new class/file, allowing controller class call new class, , allowing new class have access controller class's properties , function.

assuming i'm not totally bludgeoning appropriate design patterns, below unsuccessful attempt @ accomplishing task:

package {    import flash.display.sprite; import flash.events.event;  public class test extends sprite     {     public var mystring:string;      public function test()         {         if  (stage)             init(null);             else             addeventlistener(event.added_to_stage, init);         }      private function init(evt:event):void         {         if  (haseventlistener(event.added_to_stage))             removeeventlistener(event.added_to_stage, init);  /////////////// move commented code new file /////////////////////// //       //      //assign string value //      mystring = "hello world"; //       //      //draw blue square //      var sq:sprite = new sprite(); //      sq.graphics.beginfill(0x0000ff); //      sq.graphics.drawrect(10, 10, 100, 100); //      sq.graphics.endfill(); //      super.addchild(sq); //       //      //call tracer function //      tracer(); // //////////////////////////////////////////////////////////////////////          //call pasted method in newfile.as         newfile.mynewfunction();     // <- doesn't work         }      public function tracer():void         {         trace(mystring);         }     } } 

new file doesn't have access controller class - doesn't work. how can write new file have access properties, functions, stage, etc. of controller class, if code never removed , still in original place.

package {    public class newfile     {     public static function mynewfuntion():void         {         //assign string value         mystring = "hello world";          //draw blue square         var sq:sprite = new sprite();         sq.graphics.beginfill(0x0000ff);         sq.graphics.drawrect(10, 10, 100, 100);         sq.graphics.endfill();         super.addchild(sq);          //call tracer function         tracer();         }     } } 

 public class mainclass extends sprite {     private var subclass:subclass;      public function mainclass     {        var controller:controller = new controller();         subclass = new subclass(controller);        addchild( subclass );     }      private function init():void     {        subclass.dowhatever();     } }  public class controller {      public function dothis():void     {      }     public function dothat():void     {          trace("controller that...");      }     public function dosomethingelse():void     {      } }  public class subclass extends sprite {      private var controller:controller;       public function subclass(controller:controller)      {          this.controller = controller;          trace( "new subclass instance!" );      }       public function dowhatever():void      {          controller.dothat();      } }