feat: Mobile updates

packages/entity/src/packets/trait-update-mobile.js

@@ -0,0 +1,12 @@
+import {Packet} from '@latus/socket';
+
+export default () => class TraitUpdateMobilePacket extends Packet {
+
+  static get data() {
+    return {
+      isMobile: 'bool',
+      speed: 'uint16',
+    };
+  }
+
+};

packages/entity/src/traits/mobile.js

@@ -12,6 +12,16 @@ export default () => class Mobile extends decorate(Trait) {
 
   #appliedMovement = [0, 0];
 
+  acceptPacket(packet) {
+    switch (packet.constructor.type) {
+      case 'TraitUpdateMobile':
+        this.entity.isMobile = packet.data.isMobile;
+        this.entity.speed = packet.data.speed;
+        break;
+      default:
+    }
+  }
+
   static defaultState() {
     return {
       isMobile: true,
@@ -108,7 +118,7 @@ export default () => class Mobile extends decorate(Trait) {
       },
 
       requestMovement: (vector) => {
-        if (!this.isMobile) {
+        if (!this.entity.isMobile) {
           return;
         }
         this.entity.applyMovement(Vector.scale(
@@ -121,6 +131,20 @@ export default () => class Mobile extends decorate(Trait) {
     };
   }
 
+  packets() {
+    const {isMobile, speed} = this.stateDifferences();
+    if (isMobile || speed) {
+      return [[
+        'TraitUpdateMobile',
+        {
+          isMobile: this.state.isMobile,
+          speed: this.state.speed,
+        },
+      ]];
+    }
+    return [];
+  }
+
   tick(elapsed) {
     if (Vector.isZero(this.#appliedMovement)) {
       return;