Nape get collision points plus effects

Package {ImportNape.phys.Body; ImportNape.shape.Shape; Importnape.shape.Circle; ImportFlash.display.MovieClip; ImportFlash.utils.getDefinitionByName; ImportNape.callbacks.CbType; ImportNape.callbacks.PreListener; ImportNape.callbacks.InteractionType; ImportNape.callbacks.PreCallback; ImportNape.dynamics.CollisionArbiter; Importnape.geom.Vec2; ImportNape.callbacks.InteractionListener; Importnape.callbacks.CbEvent; ImportNape.callbacks.InteractionCallback; ImportNape.phys.BodyType; ImportNape.shape.Polygon; Importnape.dynamics.Contact; Importnape.dynamics.ContactList;  Public classMainextendsBasemain { Public functionMain () {Super({gravity:{x:0,y:0}}); }                Private var_ccbtype:cbtype=NewCbtype (); Private var_rcbtype:cbtype=NewCbtype (); Override protectedfunctionCreatebodies ():void {            //some rigid bodies for collisions             for(vari:int=0;i<20;i++){                varB:body; if(Math.random () >0.5) B=createbox (50,2,stage.stagewidth*math.random (), stage.stageheight*math.random ()); ElseB=createcircle (25,stage.stagewidth*math.random (), stage.stageheight*math.random ()); B.rotation= 2*math.pi*Math.random (); B.type=bodytype.static; B.space=_space; }                        //round            varC:body = Createcircle (20,stage.stagewidth>>1,stage.stageheight>>1);            C.cbtypes.add (_ccbtype); C.space=_space; C.velocity.setxy (500,500); _space.listeners.add (NewInteractionlistener (Cbevent.begin,interactiontype.collision,_ccbtype,cbtype.any_body,circlehitbeginhandler                        )); //Rectangle            varR:body = Createbox (40,40,stage.stagewidth>>1-100,stage.stageheight>>1);            R.cbtypes.add (_rcbtype); R.space=_space; R.velocity.setxy (-500,-500); _space.listeners.add (NewInteractionlistener (Cbevent.begin,interactiontype.collision,_rcbtype,cbtype.any_body,boxhitbeginhandler)); }                Private functionCirclehitbeginhandler (Cb:interactioncallback):void{            varColarb:collisionarbiter = cb.arbiters.length>0?cb.arbiters.at (0) as Collisionarbiter:NULL; if(!colarb)return; //Trace ("Circle Collision point:" +colarb.contacts.length);//always have only one bump            varHITPOS:VEC2 = colArb.contacts.at (0). Position;            AddEffect (HITPOS.X,HITPOS.Y); //Bounce            varNORMAL:VEC2 =Colarb.normal; Cb.int1.castBody.velocity.Set(Normal.mul (500)); }                Private functionBoxhitbeginhandler (Cb:interactioncallback):void{            varColarb:collisionarbiter = cb.arbiters.length>0?cb.arbiters.at (0) as Collisionarbiter:NULL; if(!colarb)return; //Trace ("Rectangle Collision point:" +colarb.contacts.length);//Multiple collision points appear            varShape2:nape.shape.Shape = ColArb.shape2.body = = Cb.int2.castBody?ColArb.shape2:colArb.shape1; //find the point of a real collision            varContact:contact =gethitshapecontact (colarb.contacts,shape2); if(Contact) {varHITPOS:VEC2 =contact.position; if(Hitpos) AddEffect (HITPOS.X,HITPOS.Y); }            //Bounce            varNORMAL:VEC2 =Colarb.normal; Cb.int1.castBody.velocity.Set(Normal.mul (500)); }                Private functiongethitshapecontact (contacts:contactlist,shape:nape.shape.shape): contact{varI:int =contacts.length;  while(--i>=0){                if(Shape.contains (contacts.at (i). Position))returncontacts.at (i); }            return NULL; }                Private functionAddEffect (x: NumberY: Number):void{            var_class:class = Flash.utils.getDefinitionByName ("Effect") as Class; varEffMovieClip= (New_class ()) asMovieClip; Eff.x=x; Eff.y=y;  This. AddChild (EFF); }    }    }

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Nape get collision points plus effects