feat: explicit directional movement tracking

packages/entity/traits/directional.js

@@ -14,6 +14,7 @@ class DirectionalBase extends Trait {
   static defaultParams() {
     return {
       directionCount: 1,
+      trackMovement: true,
     };
   }
 
@@ -23,15 +24,19 @@ class DirectionalBase extends Trait {
     };
   }
 
-  listeners() {
-    return {
-      movementRequest: (vector) => {
-        this.entity.direction = Vector.toDirection(
-          vector,
-          this.params.get('directionCount')
-        );
-      },
+  constructor(entity, params, state) {
+    super(...arguments);
+    this.directionCount = this.params.get('directionCount');
   }
+
+  listeners() {
+    const listeners = {};
+    if (this.params.get('trackMovement')) {
+      listeners.movementRequest = (vector) => {
+        this.entity.direction = Vector.toDirection(vector, this.directionCount);
+      };
+    }
+    return listeners;
   }
 
 }