Animations resume in future on page visibility change

[merixstudio]

If we're not doing something wrong, then this is a bug, but we are not really sure, so please investigate further.

When game loses focus and then gains it back, all animations skip frames (as if they have never paused). They pause correctly, but they use Game.time.now to check for next frame and it seems that Game.time.now is not reset after page focus gain.

We think that this code in time/Time.js should be corrected:

    gameResumed: function () {
        ...
        //  Level out the elapsed timer to avoid spikes
        this.time = Date.now();
        ...
    },

And this seems to work:

    gameResumed: function () {
        ...
        //  Level out the elapsed timer to avoid spikes
        this.time = this.now = Date.now();  // Reseting this.now also.
        ...
    },

Thanks for your time!

[photonstorm]

Thanks for this. The fix is now in the 2.0.4 dev branch.