Prevent accidental exits

[hamidsafdari]

Hi Eric,

I can't thank you enough for making this game. I mostly play on my laptop with the remote controller installed on my phone. Since I have edge gestures enabled, quite often, I accidentally pull on the left side of the screen and get out of the controller. I've also found that in the heat of the game, I hit the close button (X) quite often.

I overrode GamePadActivity#onBackPressed() so it doesn't do anything, and made the close button activate on double click. That has improved my experience so much more.

I couldn't find a way to disable pulling from the bottom of the screen. Looks like Android won't let you do that. On my phone, pulling from the bottom shows the recent apps. Also, if you pull up, then swipe, you go to the last app. My workaround, which I absolutely think everyone should know, is to pin the app. You can pin an Android app by holding on the app preview in the recent apps and clicking on the thumbtack icon.

No more exits.

[hamidsafdari]

I made a pull request (#7) but there's not much to it.

Also, I couldn't figure out why there's so much lag when I restart the game. Of course, there's probably no way of fixing the lag from the controller side. Is the bit of code that receives inputs in the ballistica project on Github, or is that private?