refactor: controlled instance

app/ecs-components/controlled.js

@@ -1,12 +1,17 @@
 import Component from '@/ecs/component.js';
 
 export default class Controlled extends Component {
+  instanceFromSchema() {
+    return class ControlledInstance extends super.instanceFromSchema() {
+      toJSON() {
+        return {};
+      }
+    }
+  }
   static properties = {
-    locked: {type: 'uint8'},
     moveUp: {type: 'float32'},
     moveRight: {type: 'float32'},
     moveDown: {type: 'float32'},
     moveLeft: {type: 'float32'},
-    changeSlot: {type: 'int8'},
   };
 }