WorldSim v0.0.159-dev

It's been ages since I've released so there are a lot of changes:

• Most biomes now visible during world generation.
• Rivers added.
• World generation is faster
• Rendering seems to be faster
• Local map generation now generates unique maps
• Caves (stand on top of a hole in the ground and press q to enter/exit subterranean layer, beware of bats, which can attack and kill you)
• Various basic items can be found
• After entering World Simulator, press Tab to spawn in as a random Human.
• You can now use WASD as well as arrow keys in adventure mode
• Rain (it also doesn't render indoors)
• Line of sight
• Collision
• Time and day/night
• Inventory system (press I while standing on top of something)
• Hotbar (press number or CTRL+mousewheel to select items)
• Press SPACE next to an NPC to see the non-functional conversation menu.
• Press ESC to get out of most menus/submenus.
• Press E to enter interact menu. Click on a nearby tile and a context-sensitive menu will pop up. Use mousewheel to select an action and left-click to perform it. Unarmed actions seem to be buggy. Some actions you can perform are:
  ** Chop tree with axe
  ** Use sword to stab things
  ** Use fishing rod on water to catch fish
  ** Use fish on campfire to cook fish
  ** Use fish on self to eat fish
  ** Use floor on ground to build floor (and roof which blocks rain)
  ** Use wall on ground to build wall (which will block line of sight but not movement atm)
  ** Use bow on deer to shoot them. Line of sight is displayed and required for a hit.
  ** Use knife on dead deer to get hides and meat (but you can't cook deer meat yet)
  ** Etc etc. Some actions might be buggy or not implemented.
• Some items such as campfires work by being dropped on the ground. You can then use items on them.
• Thirst and hunger can occur but won't kill you yet
• Deers spawn and wander around, they leave tracks you can follow. I believe you can also kill them
• There is a sneaking mode which I think improves line of sight and halves speed.
• There is a basic crafting menu which has partial functionality.

Game is still very barebones, and lots of work left to do before a 0.1 release.