Shoot em up

Alright - slow progress again, but got turrets implemented on the ships.

They rotate towards and track targets. As soon as a target is designated, the ship starts firing. It should really wait until its within a certain cone so it will hit the target.

Changed the look and feel with a dithered radar type screen, which I'm happier with. The waypoints still aren't quite correct asor I haven't got the ship sprite centered properly.

Next I'll implement collisions / damage modelling.

I'm hoping I'll make lots of progress on Saturday instead of trying to fit this is after work!