Slow Startup

[Jormungandr]

Startup is currently slow (several seconds of black screen), I think primarily because of the terrain generation. That needs to be sped up and/or stored once on generation and loaded thereafter.

[Apreche]

Perhaps we can at least have a loading progress bar of some sort?

[lackofcheese]

Well, now that Andrew has implemented saving/loading, we should have the option of loading the terrain at startup.

[Apreche]

I am going to make a menu system, and that should take care of the problems since the game will launch into a menu.