diff --git a/packages/core/event-emitter.js b/packages/core/event-emitter.js
index f65a230..6693a75 100644
--- a/packages/core/event-emitter.js
+++ b/packages/core/event-emitter.js
@@ -60,7 +60,9 @@ export function EventEmitterMixin(Superclass) {
     }
 
     off(typesOrType, fn) {
-      typesOrType = Array.isArray(typesOrType) ? typesOrType : [typesOrType];
+      if (!Array.isArray(typesOrType)) {
+        typesOrType = [typesOrType];
+      }
       for (let i = 0; i < typesOrType.length; i++) {
         const type = typesOrType[i];
         this.offSingleEvent(type, fn);
@@ -91,7 +93,9 @@ export function EventEmitterMixin(Superclass) {
     }
 
     _on(typesOrType, fn, that, once) {
-      typesOrType = Array.isArray(typesOrType) ? typesOrType : [typesOrType];
+      if (!Array.isArray(typesOrType)) {
+        typesOrType = [typesOrType];
+      }
       for (let i = 0; i < typesOrType.length; i++) {
         const type = typesOrType[i];
         this.onSingleEvent(type, fn, that, once);
diff --git a/packages/entity/entity.synchronized.js b/packages/entity/entity.synchronized.js
index 5d976e5..5e7102c 100644
--- a/packages/entity/entity.synchronized.js
+++ b/packages/entity/entity.synchronized.js
@@ -280,7 +280,13 @@ export class Entity extends decorate(Resource) {
     const packets = [];
     const updates = [];
     for (const type in this._traits) {
-      const traitPackets = this._traits[type].packets(informed);
+      let traitPackets = this._traits[type].packets(informed);
+      if (!traitPackets) {
+        continue;
+      }
+      if (!Array.isArray(traitPackets)) {
+        traitPackets = [traitPackets];
+      }
       if (traitPackets.length > 0) {
         updates.push({
           type,
diff --git a/packages/entity/packets/trait-alive.packet.js b/packages/entity/packets/trait-alive.packet.js
index ad278f4..9134acd 100644
--- a/packages/entity/packets/trait-alive.packet.js
+++ b/packages/entity/packets/trait-alive.packet.js
@@ -1,10 +1,12 @@
-// export class TraitAlivePacket extends EntityPacket {
+import {Packet} from '@avocado/net';
 
-//   static get schema() {
-//     const schema = super.schema;
-//     schema.data.life = 'uint16';
-//     schema.data.maxLife = 'uint16';
-//     return schema;
-//   }
+export class TraitAlivePacket extends Packet {
 
-// }
+  static get schema() {
+    const schema = super.schema;
+    schema.data.life = 'uint16';
+    schema.data.maxLife = 'uint16';
+    return schema;
+  }
+
+}
diff --git a/packages/entity/packets/trait-directional.packet.js b/packages/entity/packets/trait-directional.packet.js
deleted file mode 100644
index 0bf9d7a..0000000
--- a/packages/entity/packets/trait-directional.packet.js
+++ /dev/null
@@ -1,9 +0,0 @@
-// export class TraitDirectionalPacket extends EntityPacket {
-
-//   static get schema() {
-//     const schema = super.schema;
-//     schema.data.direction = 'uint8';
-//     return schema;
-//   }
-
-// }
diff --git a/packages/entity/packets/trait-update-directional-direction.packet.js b/packages/entity/packets/trait-update-directional-direction.packet.js
new file mode 100644
index 0000000..779959f
--- /dev/null
+++ b/packages/entity/packets/trait-update-directional-direction.packet.js
@@ -0,0 +1,12 @@
+import {Packet} from '@avocado/net';
+
+export class TraitUpdateDirectionalDirectionPacket extends Packet {
+
+  static get schema() {
+    return {
+      ...super.schema,
+      data: 'uint8',
+    };
+  }
+
+}
diff --git a/packages/entity/traits/directional.trait.js b/packages/entity/traits/directional.trait.js
index 2b9f33a..76362c8 100644
--- a/packages/entity/traits/directional.trait.js
+++ b/packages/entity/traits/directional.trait.js
@@ -2,7 +2,9 @@ import {compose} from '@avocado/core';
 import {Vector} from '@avocado/math';
 
 import {StateProperty, Trait} from '../trait';
-import {TraitDirectionalPacket} from '../packets/trait-directional.packet';
+import {
+  TraitUpdateDirectionalDirectionPacket,
+} from '../packets/trait-update-directional-direction.packet';
 
 const decorate = compose(
   StateProperty('direction', {
@@ -31,21 +33,32 @@ export class Directional extends decorate(Trait) {
 
   constructor(entity, params, state) {
     super(entity, params, state);
+    this._directionChanged = false;
     this.directionCount = this.params.directionCount;
   }
 
   acceptPacket(packet) {
-    if (packet instanceof TraitDirectionalPacket) {
-      this.entity.direction = packet.data.direction;
+    if (packet instanceof TraitUpdateDirectionalDirectionPacket) {
+      this.entity.direction = packet.data;
     }
   }
 
-  packetsForUpdate() {
-    return this.createTraitPacketUpdates(TraitDirectionalPacket);
+  cleanPackets() {
+    this._directionChanged = false;
+  }
+
+  packets(informed) {
+    if (this._directionChanged) {
+      return new TraitUpdateDirectionalDirectionPacket(this.entity.direction);
+    }
   }
 
   listeners() {
-    const listeners = {};
+    const listeners = {
+      directionChanged: () => {
+        this._directionChanged = true;
+      },
+    };
     if (this.params.trackMovement) {
       listeners.movementRequest = (vector) => {
         if (Vector.isZero(vector)) {
diff --git a/packages/entity/traits/positioned.trait.js b/packages/entity/traits/positioned.trait.js
index f65cb58..fe32429 100644
--- a/packages/entity/traits/positioned.trait.js
+++ b/packages/entity/traits/positioned.trait.js
@@ -78,18 +78,16 @@ export class Positioned extends decorate(Trait) {
   }
 
   packets(informed) {
-    const packets = [];
     if (this._positionChanged) {
       // Physics slop can end us up with negatives. Don't allow them in the
       // packed representation, even though it means a slight loss in accuracy.
       // The world bounds will (should!) keep things *eventually* correct.
       const x = Math.max(0, this.state.x);
       const y = Math.max(0, this.state.y);
-      packets.push(new TraitUpdatePositionedPositionPacket({
+      return new TraitUpdatePositionedPositionPacket({
         position: [x, y],
-      }, this.entity));
+      });
     }
-    return packets;
   }
 
   set relaxServerPositionConstraintIfNearerThan(nearerThan) {
diff --git a/packages/graphics/packets/trait-visible.packet.js b/packages/graphics/packets/trait-visible.packet.js
index c652bd5..a4d8b03 100644
--- a/packages/graphics/packets/trait-visible.packet.js
+++ b/packages/graphics/packets/trait-visible.packet.js
@@ -1,10 +1,12 @@
-// export class TraitVisiblePacket extends EntityPacket {
+import {Packet} from '@avocado/net';
 
-//   static get schema() {
-//     const schema = super.schema;
-//     schema.data.isVisible = 'bool';
-//     schema.data.opacity = 'uint8';
-//     return schema;
-//   }
+export class TraitVisiblePacket extends Packet {
 
-// }
+  static get schema() {
+    const schema = super.schema;
+    schema.data.isVisible = 'bool';
+    schema.data.opacity = 'uint8';
+    return schema;
+  }
+
+}
diff --git a/packages/net/s13n/synchronized.js b/packages/net/s13n/synchronized.js
index 804ca8a..1b081e1 100644
--- a/packages/net/s13n/synchronized.js
+++ b/packages/net/s13n/synchronized.js
@@ -33,7 +33,9 @@ export function SynchronizedMixin(Superclass) {
       if (!packets) {
         return [];
       }
-      packets = Array.isArray(packets) ? packets : [packets];
+      if (!Array.isArray(packets)) {
+        packets = [packets];
+      }
       if (this.packetsAreIdempotent()) {
         this._idempotentPackets = packets;
       }
diff --git a/packages/timing/packets/trait-animated.packet.js b/packages/timing/packets/trait-animated.packet.js
index a32d150..8f8ea47 100644
--- a/packages/timing/packets/trait-animated.packet.js
+++ b/packages/timing/packets/trait-animated.packet.js
@@ -1,10 +1,12 @@
-// export class TraitAnimatedPacket extends EntityPacket {
+import {Packet} from '@avocado/net';
 
-//   static get schema() {
-//     const schema = super.schema;
-//     schema.data.currentAnimation = 'string';
-//     schema.data.isAnimating = 'bool';
-//     return schema;
-//   }
+export class TraitAnimatedPacket extends Packet {
 
-// }
+  static get schema() {
+    const schema = super.schema;
+    schema.data.currentAnimation = 'string';
+    schema.data.isAnimating = 'bool';
+    return schema;
+  }
+
+}