Split into base class and plugin extension so other classes can use them too

Author: photonstorm

src/CoreScenePlugins.js

@@ -11,8 +11,8 @@ var CoreScenePlugins = [
     'GameObjectCreator',
     'GameObjectFactory',
     'ScenePlugin',
-    'DisplayList',
-    'UpdateList'
+    'DisplayListPlugin',
+    'UpdateListPlugin'
 
 ];
 

src/gameobjects/DisplayList.js

@@ -1,23 +1,12 @@
 var Class = require('../utils/Class');
 var StableSort = require('../utils/array/StableSort');
-var PluginManager = require('../plugins/PluginManager');
 
 var DisplayList = new Class({
 
     initialize:
 
-    function DisplayList (scene)
+    function DisplayList ()
     {
-        //  The Scene that owns this plugin
-        this.scene = scene;
-
-        this.systems = scene.sys;
-
-        if (!scene.sys.settings.isBooted)
-        {
-            scene.sys.events.once('boot', this.boot, this);
-        }
-
         //  The objects that belong to this collection.
         //  The equivalent of the old `Sprite.children` array.
         this.list = [];
@@ -27,14 +16,6 @@ var DisplayList = new Class({
         this.position = 0;
     },
 
-    boot: function ()
-    {
-        var eventEmitter = this.systems.events;
-
-        eventEmitter.on('shutdown', this.shutdown, this);
-        eventEmitter.on('destroy', this.destroy, this);
-    },
-
     process: function ()
     {
         if (this.sortChildrenFlag)
@@ -725,6 +706,4 @@ var DisplayList = new Class({
 
 });
 
-PluginManager.register('DisplayList', DisplayList, 'displayList');
-
 module.exports = DisplayList;

src/gameobjects/DisplayListPlugin.js

@@ -0,0 +1,48 @@
+var Class = require('../utils/Class');
+var DisplayList = require('./DisplayList');
+var PluginManager = require('../plugins/PluginManager');
+
+var DisplayListPlugin = new Class({
+
+    Extends: DisplayList,
+
+    initialize:
+
+    function DisplayListPlugin (scene)
+    {
+        //  The Scene that owns this plugin
+        this.scene = scene;
+
+        this.systems = scene.sys;
+
+        if (!scene.sys.settings.isBooted)
+        {
+            scene.sys.events.once('boot', this.boot, this);
+        }
+
+        DisplayList.call(this);
+    },
+
+    boot: function ()
+    {
+        var eventEmitter = this.systems.events;
+
+        eventEmitter.on('shutdown', this.shutdown, this);
+        eventEmitter.on('destroy', this.destroy, this);
+    },
+
+    shutdown: function ()
+    {
+        this.removeAll();
+    },
+
+    destroy: function ()
+    {
+        this.shutdown();
+    }
+
+});
+
+PluginManager.register('DisplayListPlugin', DisplayListPlugin, 'displayList');
+
+module.exports = DisplayListPlugin;

src/gameobjects/UpdateList.js

@@ -1,36 +1,16 @@
 var Class = require('../utils/Class');
-var PluginManager = require('../plugins/PluginManager');
 
 var UpdateList = new Class({
 
     initialize:
 
-    function UpdateList (scene)
+    function UpdateList ()
     {
-        this.scene = scene;
-
-        this.systems = scene.sys;
-
-        if (!scene.sys.settings.isBooted)
-        {
-            scene.sys.events.once('boot', this.boot, this);
-        }
-
         this._list = [];
         this._pendingInsertion = [];
         this._pendingRemoval = [];
     },
 
-    boot: function ()
-    {
-        var eventEmitter = this.systems.events;
-
-        eventEmitter.on('preupdate', this.preUpdate, this);
-        eventEmitter.on('update', this.update, this);
-        eventEmitter.on('shutdown', this.shutdown, this);
-        eventEmitter.on('destroy', this.destroy, this);
-    },
-
     add: function (child)
     {
         //  Is child already in this list?
@@ -130,12 +110,8 @@ var UpdateList = new Class({
     destroy: function ()
     {
         this.shutdown();
-
-        this.scene = undefined;
     }
 
 });
 
-PluginManager.register('UpdateList', UpdateList, 'updateList');
-
 module.exports = UpdateList;

src/gameobjects/UpdateListPlugin.js

@@ -0,0 +1,46 @@
+var Class = require('../utils/Class');
+var PluginManager = require('../plugins/PluginManager');
+var UpdateList = require('./UpdateList');
+
+var UpdateListPlugin = new Class({
+
+    Extends: UpdateList,
+
+    initialize:
+
+    function UpdateListPlugin (scene)
+    {
+        this.scene = scene;
+
+        this.systems = scene.sys;
+
+        if (!scene.sys.settings.isBooted)
+        {
+            scene.sys.events.once('boot', this.boot, this);
+        }
+
+        UpdateList.call(this);
+    },
+
+    boot: function ()
+    {
+        var eventEmitter = this.systems.events;
+
+        eventEmitter.on('preupdate', this.preUpdate, this);
+        eventEmitter.on('update', this.update, this);
+        eventEmitter.on('shutdown', this.shutdown, this);
+        eventEmitter.on('destroy', this.destroy, this);
+    },
+
+    destroy: function ()
+    {
+        this.shutdown();
+
+        this.scene = undefined;
+    }
+
+});
+
+PluginManager.register('UpdateListPlugin', UpdateListPlugin, 'updateList');
+
+module.exports = UpdateListPlugin;

src/gameobjects/index.js

@@ -3,7 +3,9 @@
 var GameObjects = {
 
     DisplayList: require('./DisplayList'),
+    DisplayListPlugin: require('./DisplayListPlugin'),
     UpdateList: require('./UpdateList'),
+    UpdateListPlugin: require('./UpdateListPlugin'),
     GameObjectCreator: require('./GameObjectCreator'),
     GameObjectFactory: require('./GameObjectFactory'),