Fixed issue stopping SoundManager.volume from working correctly on a global volume basis (fix # 488)

examples/wip/focus mute.js

@@ -0,0 +1,53 @@
+
+var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render });
+
+function preload() {
+
+    game.load.image('disk', 'assets/sprites/ra_dont_crack_under_pressure.png');
+
+    //  Firefox doesn't support mp3 files, so use ogg
+    game.load.audio('boden', ['assets/audio/bodenstaendig_2000_in_rock_4bit.mp3', 'assets/audio/bodenstaendig_2000_in_rock_4bit.ogg']);
+
+}
+
+var s;
+var music;
+
+function create() {
+
+    game.stage.backgroundColor = '#182d3b';
+    game.input.touch.preventDefault = false;
+
+    music = game.add.audio('boden');
+    music.play();
+
+    s = game.add.sprite(game.world.centerX, game.world.centerY, 'disk');
+    s.anchor.setTo(0.5, 0.5);
+
+    game.input.onDown.add(changeVolume, this);
+
+}
+
+function changeVolume(pointer) {
+
+    if (pointer.y < 300)
+    {
+        game.sound.volume += 0.1;
+        // music.volume += 0.1;
+    }
+    else
+    {
+        game.sound.volume -= 0.1;
+        // music.volume -= 0.1;
+    }
+
+}
+
+function update() {
+    s.rotation += 0.01;
+}
+
+function render() {
+    game.debug.renderSoundInfo(music, 20, 32);
+}
+