Progress! 2 2

Progress!

After Game Center match making, I now have some interactivity: choose your ship's heading and thrust.

• It's a lockstep setup with input delay (currently two steps). Only input is synchronized between clients;
• Simulation updates every 0.1s (and waits if input doesn't come in);
• The "physics simulation" should be deterministic if Double acts the same on all iPhones/iPads.

Improvements:

• It's not a game yet: no win/lose condition;
• When it comes to network: current implementation uses tcp/ip and sends input as JSON to other clients. This should probably be optimized;
• There is no graceful end of game: only stop the process.