fix: alive trait sync

packages/entity/packets/trait-alive.packet.js

@@ -1,12 +0,0 @@
-import {Packet} from '@avocado/net';
-
-export class TraitAlivePacket extends Packet {
-
-  static get schema() {
-    const schema = super.schema;
-    schema.data.life = 'uint16';
-    schema.data.maxLife = 'uint16';
-    return schema;
-  }
-
-}

packages/entity/packets/trait-update-alive.packet.js

@@ -0,0 +1,15 @@
+import {Packet} from '@avocado/net';
+
+export class TraitUpdateAlivePacket extends Packet {
+
+  static get schema() {
+    return {
+      ...super.schema,
+      data: {
+        life: 'uint16',
+        maxLife: 'uint16',
+      }
+    };
+  }
+
+}

packages/entity/traits/alive.trait.js

@@ -8,7 +8,7 @@ import {
 import {compose} from '@avocado/core';
 
 import {StateProperty, Trait} from '../trait';
-import {TraitAlivePacket} from '../packets/trait-alive.packet';
+import {TraitUpdateAlivePacket} from '../packets/trait-update-alive.packet';
 
 const decorate = compose(
   StateProperty('life', {
@@ -79,7 +79,7 @@ export class Alive extends decorate(Trait) {
   }
 
   acceptPacket(packet) {
-    if (packet instanceof TraitAlivePacket) {
+    if (packet instanceof TraitUpdateAlivePacket) {
       this.entity.life = packet.data.life;
       this.entity.maxLife = packet.data.maxLife;
     }
@@ -89,8 +89,11 @@ export class Alive extends decorate(Trait) {
     return this._deathSound;
   }
 
-  packetsForUpdate() {
+  packets(informed) {
-    return this.createTraitPacketUpdates(TraitAlivePacket);
+    const {life, maxLife} = this.stateDifferences();
+    if (life || maxLife) {
+      return new TraitUpdateAlivePacket(this.state);
+    }
   }
 
   listeners() {