Unfinished work

Firstly, let me say thank you so much for porting Tyrian to iOS.

There are a few errors, however.

1) Get rid of the sidebar for the levels and implement the gesture APIs instead. Im thinking, 1 touch for movement and hold 2 touches for firing the main gun. The port is honestly unplayable without a more discretionary way to shoot, as shields wear down, and timing kills for bonuses become impossible. More touches for sidekicks and switching the rear will work well, too, or maybe a pinch to switch.

2) Finish the menu system so it is all touch based, instead of the left bar with buttons for changing items and up/downgrading weapons.

intrepidsg about Tyrian