Things Done And Things To Do

Things Done:
+ Created a "delta formation" wave pattern
+ Implemented a spreader powerup which will randomly be dropped by killed enemies
+ Scrolling, single-image background (thanks to TP :) )
+ Horizontal background scroll based on ships position

Things to Do:
+ Add support for animated and tile-based background
+ Create a "layer manager" which would manage a multi-layered background
+ Get in-game cutscenes working
+ Create final copies of level 1 and 2