Migrating position notification into the User class

back/src/Model/User.ts

@@ -3,6 +3,7 @@ import { PointInterface } from "./Websocket/PointInterface";
 import {Zone} from "_Model/Zone";
 import {Movable} from "_Model/Movable";
 import {PositionInterface} from "_Model/PositionInterface";
+import {PositionNotifier} from "_Model/PositionNotifier";
 
 export class User implements Movable {
     public listenedZones: Set<Zone>;
@@ -10,14 +11,22 @@ export class User implements Movable {
 
     public constructor(
         public id: number,
-        public position: PointInterface,
+        private position: PointInterface,
         public silent: boolean,
-
+        private positionNotifier: PositionNotifier
     ) {
         this.listenedZones = new Set<Zone>();
+
+        this.positionNotifier.enter(this);
     }
 
-    public getPosition(): PositionInterface {
+    public getPosition(): PointInterface {
         return this.position;
     }
+
+    public setPosition(position: PointInterface): void {
+        const oldPosition = this.position;
+        this.position = position;
+        this.positionNotifier.updatePosition(this, position, oldPosition);
+    }
 }