feat: camera-based state diff!

server/create-entity-for-connection.js

@@ -24,6 +24,7 @@ export function createEntityForConnection(socket) {
         },
       },
       existent: {},
+      followed: {},
       graphical: {},
       mobile: {
         state: {

traits/informed.js

@@ -2,19 +2,12 @@ import * as I from 'immutable';
 import isPlainObject from 'is-plain-object';
 
 import {compose} from '@avocado/core';
-import {StateProperty, Trait} from '@avocado/entity';
+import {Trait} from '@avocado/entity';
 
 const decorate = compose(
-  StateProperty('informSize'),
 );
 
-class InformedBase extends Trait {
-
-  static defaultState() {
-    return {
-      informSize: [640, 360],
-    };
-  }
+export class Informed extends decorate(Trait) {
 
   initialize() {
     this.entityReducer = this.createIndexedReducer();
@@ -81,11 +74,12 @@ class InformedBase extends Trait {
       return diff
     }
     const room = this.entity.room;
+    const camera = this.entity.camera;
     for (const index in diff.room.layers) {
       // Index entities.
       const layer = room.layer(index);
       const visibleEntities = layer.visibleEntities(
-        [0, 0, 320, 180]
+        camera.rectangle
       );
       const indexedEntities = {};
       for (const entity of visibleEntities) {
@@ -135,5 +129,3 @@ class InformedBase extends Trait {
   }
 
 }
-
-export class Informed extends decorate(InformedBase) {}