Perlin noise generator

Code taken from:

http://devmag.org.za/2009/04/25/perlin-noise/
Map interpreter interprets gradients

Gradients can be applied at the interpreter.
Added gradient tiles
Center map key

Also game is not in godmode anymore. Was needed to test level design.
Minor safety mechanism
AI back online
Space background improved, Item images added.

Sexy.
Item icons and updated indices
Doors open and close!

use A and S to open.
Drop, eat, and pickup updates tiles correctly.
Item in door blocking mechanism.
Added monster check on doors.
Changed open/close keys

Changed the open key to O and close key to C
Nullpointer protection on image grabbing.
Weapons added

Weapons are now implemented and a lightsaber can be spawned, though you
can't do anything except pick them up yet.
Wield action

Can use W to wield a weapon, and changed close door to S for shut so it
doesn't conflict with centering.
Intro text shows up
Intro text dialog fixed.
Display damage

When attacking it now displays the damage done.
Added tag field for Maps, easier for text.