refactor: always use Trait::initialize

packages/entity/traits/animated.js

@@ -27,8 +27,7 @@ class AnimatedBase extends Trait {
     };
   }
 
-  constructor(entity, params, state) {
-    super(...arguments);
+  initialize() {
     this.sprite = undefined;
     this.frameCount = this.params.get('frameCount');
     this.frameRate = this.params.get('frameRate');
@@ -49,7 +48,7 @@ class AnimatedBase extends Trait {
   }
 
   loadSpriteImageIfPossible() {
-    if (!('container' in this.entity)) {
+    if (!this.entity.container) {
       return;
     }
     if (!this.image) {

packages/entity/traits/directional.js

@@ -24,8 +24,7 @@ class DirectionalBase extends Trait {
     };
   }
 
-  constructor(entity, params, state) {
-    super(...arguments);
+  initialize() {
     this.directionCount = this.params.get('directionCount');
   }
 

packages/entity/traits/existent.js

@@ -8,11 +8,6 @@ const decorate = compose(
 
 class ExistentBase extends Trait {
 
-  constructor(...args) {
-    super(...args);
-    this._isTicking = this.params.get('isTicking');
-  }
-
   static defaultParams() {
     return {
       isTicking: true,
@@ -25,6 +20,10 @@ class ExistentBase extends Trait {
     };
   }
 
+  initialize() {
+    this._isTicking = this.params.get('isTicking');
+  }
+
   get isTicking() {
     return this._isTicking;
   }

packages/entity/traits/graphical.js

@@ -14,15 +14,11 @@ class GraphicalBase extends Trait {
     };
   }
 
-  constructor(...args) {
-    super(...args);
+  initialize() {
     if (hasGraphics) {
       this._container = new Container();
     }
     this.trackPosition = this.params.get('trackPosition');
-  }
-
-  initialize() {
     if (this.shouldSynchronizePosition()) {
       this.synchronizePosition();
     }
@@ -33,11 +29,13 @@ class GraphicalBase extends Trait {
   }
 
   shouldSynchronizePosition() {
-    return hasGraphics && this.trackPosition && 'position' in this.entity;
+    return hasGraphics && this.trackPosition;
   }
 
   synchronizePosition() {
-    this.entity.container.position = this.entity.position;
+    if ('position' in this.entity) {
+      this.entity.container.position = this.entity.position;
+    }
   }
 
   listeners() {

packages/entity/traits/mobile.js

@@ -17,8 +17,7 @@ class MobileBase extends Trait {
     };
   }
 
-  constructor(...args) {
-    super(...args);
+  initialize() {
     this.requestedMovement = [0, 0];
   }