Large coding update!
The purchasing system has been completed. There are now 15 objects within the game that can either be purchased or earned by completing classes. Each object is found at a certain location (Supply, Garage, Computer).
There's a new way to purchase robots. Once you have enough materials, you go ask the supply officer. You can also by upgrades to your mining gun as well as to your carrying pack. The supply officer can also fix the broken robot out front if you have enough minerals.
We have audio cues being played to tell the players what to do... the volume is just really really low, so we'll increase that for the next update.