Added GameObject.scale transform property for a unified scale setter

Author: photonstorm

src/gameobjects/components/Transform.js

@@ -95,6 +95,42 @@ var Transform = {
      */
     w: 0,
 
+    /**
+     * This is a special setter that allows you to set both the horizontal and vertical scale of this Game Object
+     * to the same value, at the same time. When reading this value the result returned is `(scaleX + scaleY) / 2`.
+     * 
+     * Use of this property implies you wish the horizontal and vertical scales to be equal to each other. If this
+     * isn't the case, use the `scaleX` or `scaleY` properties instead.
+     *
+     * @name Phaser.GameObjects.Components.Transform#scale
+     * @type {number}
+     * @default 1
+     * @since 3.18.0
+     */
+    scale: {
+
+        get: function ()
+        {
+            return (this._scaleX + this._scaleY) / 2;
+        },
+
+        set: function (value)
+        {
+            this._scaleX = value;
+            this._scaleY = value;
+
+            if (value === 0)
+            {
+                this.renderFlags &= ~_FLAG;
+            }
+            else
+            {
+                this.renderFlags |= _FLAG;
+            }
+        }
+
+    },
+
     /**
      * The horizontal scale of this Game Object.
      *
@@ -114,7 +150,7 @@ var Transform = {
         {
             this._scaleX = value;
 
-            if (this._scaleX === 0)
+            if (value === 0)
             {
                 this.renderFlags &= ~_FLAG;
             }
@@ -145,7 +181,7 @@ var Transform = {
         {
             this._scaleY = value;
 
-            if (this._scaleY === 0)
+            if (value === 0)
             {
                 this.renderFlags &= ~_FLAG;
             }