ScenePlugin.run is a new method that will run the given Scene and not change the state of the current Scene at all. If the scene is asleep, it will be woken. If it's paused, it will be resumed. If not running at all, it will be started.

Author: photonstorm

CHANGELOG.md

@@ -87,6 +87,7 @@ TODO - Out of Canvas events
 * Camera has a new property `visible`. An invisible Camera will skip rendering and input tests of everything it can see. This allows you to create say a mini-cam and then toggle it on and off without needing to re-create it each time.
 * Camera has a new method `setVisible` which toggles its visible property.
 * `CameraManager.fromJSON` will now set the visible property is defined in the config.
+* `ScenePlugin.run` is a new method that will run the given Scene and not change the state of the current Scene at all. If the scene is asleep, it will be woken. If it's paused, it will be resumed. If not running at all, it will be started.
 
 ### Updates
 

src/scene/SceneManager.js

@@ -1011,6 +1011,49 @@ var SceneManager = new Class({
         return this;
     },
 
+    /**
+     * Runs the given Scene, but does not change the state of this Scene.
+     * 
+     * If the given Scene is paused, it will resume it. If sleeping, it will wake it.
+     * If not running at all, it will be started.
+     *
+     * Use this if you wish to open a modal Scene by calling `pause` on the current
+     * Scene, then `run` on the modal Scene.
+     *
+     * @method Phaser.Scenes.SceneManager#run
+     * @since 3.10.0
+     *
+     * @param {string} key - The Scene to run.
+     * @param {object} [data] - A data object that will be passed to the Scene that is run _only if the Scene isn't asleep or paused_.
+     *
+     * @return {Phaser.Scenes.SceneManager} This Scene Manager.
+     */
+    run: function (key, data)
+    {
+        var scene = this.getScene(key);
+
+        if (!scene)
+        {
+            return this;
+        }
+
+        if (scene.sys.isSleeping())
+        {
+            //  Sleeping?
+            scene.sys.wake();
+        }
+        else if (scene.sys.isBooted && !scene.sys.isActive())
+        {
+            //  Paused?
+            scene.sys.resume();
+        }
+        else
+        {
+            //  Not actually running?
+            this.start(key, data);
+        }
+    },
+
     /**
      * Starts the given Scene.
      *

src/scene/ScenePlugin.js

@@ -498,6 +498,37 @@ var ScenePlugin = new Class({
         return this;
     },
 
+    /**
+     * Runs the given Scene, but does not change the state of this Scene.
+     * 
+     * If the given Scene is paused, it will resume it. If sleeping, it will wake it.
+     * If not running at all, it will be started.
+     *
+     * Use this if you wish to open a modal Scene by calling `pause` on the current
+     * Scene, then `run` on the modal Scene.
+     *
+     * @method Phaser.Scenes.ScenePlugin#run
+     * @since 3.10.0
+     *
+     * @param {string} key - The Scene to run.
+     * @param {object} [data] - A data object that will be passed to the Scene that is run _only if the Scene isn't asleep or paused_.
+     *
+     * @return {Phaser.Scenes.ScenePlugin} This ScenePlugin object.
+     */
+    run: function (key, data)
+    {
+        if (this.settings.status !== CONST.RUNNING)
+        {
+            this.manager.queueOp('run', key, data);
+        }
+        else
+        {
+            this.manager.run(key, data);
+        }
+
+        return this;
+    },
+
     /**
      * Pause the Scene - this stops the update step from happening but it still renders.
      *