Thread: codes

Originally Posted by Govtcheez

There's only one B A? That's a little disappointing. I've been remembering it wrong this whole time.

Paul, I'm ashamed in you.

I always remembered that code coming from Contra on the NES. There might have been a similar one for Super Contra/Contra 2 but I can't remember.

I also don't know what the trendy vintage shirt sold at hot topic and other places had for that code(there was a shirt with that code printed on the front).

I remember few codes from games. I remember how to do the infinite guy trick in Mario Brothers 1 on stage 3-1 but you can only do it on the exact and original NES catridge-based data(weather the new versions are NES emulations are not might prove this). The Mario 1 featured in Mario All Stars was so not even close. The bug doesn't work.

Hacks are a lot more fun for me. I like the Rainbow Set hacks for Street Fighter 2's original arcade engine(The World Warrior, Champion Edition and Hyper Fighting). That was crazy stuff. Air moves for everyone. 12 fireballs on the screen at once and morphing into anyone you want VIA cycling through the cast with the start button.

> I also don't know what the trendy vintage shirt sold at hot topic and other places had for that code(there was a shirt with that code printed on the front).

Yeah, I've seen that too.

To be fair, I never actually owned a Nintendo.

Originally Posted by Govtcheez

> I also don't know what the trendy vintage shirt sold at hot topic and other places had for that code(there was a shirt with that code printed on the front).

Yeah, I've seen that too.

To be fair, I never actually owned a Nintendo.

I have 2. The original front loader and rare top loader.

Code:

aren't you guys being a little harsh

We are if it's an honest mistake. But personally I think they do it on purpose. If u no wat I mean.

I like the errors found here: http://engrish.com

Ok, I have a question for PJYelton.

About somes codes that I wrote.

No joke. I am currently wasting time writing a connect four game, and I have run into a problem, and I figure you're the guy to ask since you won the C4 tournament some time back.
The game is pretty far along. It plays pretty well. I have an MFC GUI for it. Right now it only plays the black pieces (moves second). I implemented using minimax & alpha-beta pruning. My board representation uses bitboards.

Here is the problem: It plays best when I set the depth to 1. The larger I set the search depth to, the worse it plays. I'm not sure how to account for this. I'm fairly certain that the minimax/alphabeta algorithm is correct.

Any ideas?

Well...

I'm working on it at the minute. Not sure about the evaluation function entirely but so far I've found two bugs. They are related to implicit type conversions. You see, the bitboards are 64 bit ints (__int64 type), and so I get these types of problems:

Code:

bool game_state::min_occupies(int column, int row) const
{
# if OLD_BROKEN_CODE
        int n  = (row * 8) + column;
        return (min_ & (1<<n)) != 0;
# else
	int n = (row * 8) + column;
	bitboard_t shl = 1;
	shl <<= n;
	bitboard_t res = min_ & shl;
	return res != 0;
# endif
}

So what happens in the broken code is that (1<<n) gets converted to a 32 bit integer type (native size for my processor), and an overflow occurs, so min_ & 0 == 0, etc. This wasn't the only case of this stuff. It's all over the place, and not exactly easy to spot.

Anyway, there are probably other problems as well...

But I would like to challenge your engine when I am finished. If that is somehow possible.

I swear that NES code is up-up-down-down-left-right-left-right-B-A-B-A-start (or select start for two players.)
I don't have Contra anymore, but I think a friend does; I'll have him check it. IIRC, it works for pretty much every Konami game for the NES.

I have gained a new appriciation of assert(). I think I've found all the bugs; I can't beat my program anymore. Actually it kicks my butt every single time. I have the search depth at 7. And I haven't even added a heuristic for ordering the candidate moves, which is supposed to make alpha-beta perform much faster. I'm afraid to see what will happen if I can speed it up and set the search depth even larger. Stay tuned for progress on my codes.

Originally Posted by Decrypt

I swear that NES code is up-up-down-down-left-right-left-right-B-A-B-A-start (or select start for two players.)
I don't have Contra anymore, but I think a friend does; I'll have him check it. IIRC, it works for pretty much every Konami game for the NES.

THANK YOU

And likewise, I'm 99% positive it's either 99 or 90 guys, not 30.

well, from searching, I find Shadow's results ALOT more, but I did find govt's results, always alongside Shadow's... my conclusion: You're both right, but govt's is the lesser-known (or doesn't work in all versions of the game:

http://www.gamewinners.com/nes/Contra.htm