Running out of time - sleep required...

Got sound and some music into the game, which is a first for any gamejam I've been in. Also got a packed build working nicely.

Added some particle effects, and screen shake on explosions. A certain amount of force is imparted when a ship is hit by a shell, and ships break into two when destroyed.

I'm hoping I'll have enough time to add a battleship class with large calibre guns, and an aircraft carrier that is an instant loss if destroyed.

Need to look at implementing enemy waves, and victory/loss screens. No time for fog of war :(

An amusing bug for today was getting the collision masks wrong, so the enemy was hitting itself whenever it started shooting.