The RandomDataGenerator will now create a default random seed if you instantiate your own version of the class (instead of using Phaser.Math.RND) and don't provide a seed for it

Author: photonstorm

CHANGELOG.md

@@ -147,6 +147,7 @@ The Tile Sprite Game Object has been given an internal overhaul to make it more
 * The `changedata` event dispatched by the Data Manager now includes the previous value as the 4th argument to the callback, so the event signature is now: `parent, key, value, previousValue` (thanks @iamchristopher)
 * The call to `gl.clearColor` is now skipped when `clearBeforeRender` is set to `false` (thanks @goldfire)
 * The calls to `DistanceBetween` have been replaced with `DistanceSquared` in the `closest` and `furthest` functions within Arcade Physics (thanks @Mursaat)
+* The RandomDataGenerator will now create a default random seed if you instantiate your own version of the class (instead of using `Phaser.Math.RND`) and don't provide a seed for it (thanks michaeld)
 
 ### Game Config Resolution Specific Bug Fixes
 

src/math/random-data-generator/RandomDataGenerator.js

@@ -13,22 +13,27 @@ var Class = require('../../utils/Class');
  * Access via `Phaser.Math.RND` which is an instance of this class pre-defined
  * by Phaser. Or, create your own instance to use as you require.
  * 
- * The generator is seeded by the Game Config property value `seed`.
+ * The `Math.RND` generator is seeded by the Game Config property value `seed`.
  * If no such config property exists, a random number is used.
+ * 
+ * If you create your own instance of this class you should provide a seed for it.
+ * If no seed is given it will use a 'random' one based on Date.now.
  *
  * @class RandomDataGenerator
  * @memberOf Phaser.Math
  * @constructor
  * @since 3.0.0
  *
- * @param {string[]} [seeds] - The seeds.
+ * @param {(string|string[])} [seeds] - The seeds to use for the random number generator.
  */
 var RandomDataGenerator = new Class({
 
     initialize:
 
     function RandomDataGenerator (seeds)
     {
+        if (seeds === undefined) { seeds = [ (Date.now() * Math.random()).toString() ]; }
+
         /**
          * Internal var.
          *