When you enter a code, it takes that code and performs a hash on the string*. The output of that is compared to a set of known values that correspond to certain input sequences. If it matches one of them, then it changes a few variables in the code that exploit holes in the game engine to give you superpowers or give you more weapons.

The algorithm is very simple:
1) get character from input string
2) find character in array
3) locate value corresponding to character
4) mix up input string
5) swap values in array
6) compute current iterated value
7) goto step 1 five times
8 ) check for equivalence
9) if the values match, do some action. Else, output(x,y,"Bad Code. Stop Cheating.

I have a cryptographic hash that I want to try out, but it'll take up too much space and it's too slow.

*There are a few differences, such as the output length. "Cipher" might be a better description.

Wow I never managed to implement a cheat code system before, even less a save system based on codes. I remember some NES and SNES games were like that, especially the ones by Capcom. Usually, you couldn't guess passwords to get at a different point in the game, but in some rare occasions, you could manage to guess one. There were also some easter eggs.

Yeah I know, I was just giving an example of code system usage in games

The only important remaining tasks are to finish the game engine and make more maps! Battlefield is well on its way to completion.

Nice to hear it's close to finished. When was the contest ending, btw?

Ah, right. Can't wait to try the entries.

I ditched the menus for selecting units today for the 5 buttons on the top.  So now you send the battalion to attack the enemy base.

EDIT:  wait, why was this post rated down?  was this insulting to anyone, if so, how?

Idk. I fixed