Search found 22 matches

by Nexuapex
Thu Jul 31, 2008 10:44 pm UTC
Forum: Computer Science
Topic: "Random access" PRNG
Replies: 20
Views: 3725

Re: "Random access" PRNG

Why not let your (i,j)-th pseudo-random number be hash(seed + i + j) or something, + being concatenation? Cryptographic hashes give very good pseudo-randomness, but of course simpler hashes are cheaper computationally if that matters to you. It does matter somewhat. Is there a better site than Wiki...
by Nexuapex
Wed Jul 30, 2008 1:20 am UTC
Forum: Gaming
Topic: If you could combine two(or more) games
Replies: 228
Views: 59345

Re: If you could combine two(or more) games

Hm, I've been out of the SC2-loop for a few months now, but last I heard it would have a "hero system" the same way SC1 did--storyline characters will kick lots of ass. I haven't seen anything saying that it will have the RPG elements and such that wc3 did. Dunno about the campaign, but t...
by Nexuapex
Wed Jul 30, 2008 1:18 am UTC
Forum: Computer Science
Topic: "Random access" PRNG
Replies: 20
Views: 3725

Re: "Random access" PRNG

Well, MD5 and SHA-1 probably won't work straight off the bat, as they aren't really designed for this use (doesn't MD5 need to pad the input to a multiple of 256 bytes or something like that?). But I'll look into those, they're very close to what I want.
by Nexuapex
Thu Jul 17, 2008 4:32 pm UTC
Forum: Computer Science
Topic: "Random access" PRNG
Replies: 20
Views: 3725

Re: "Random access" PRNG

So to rephrase, you want to be able to find the n-th term of a prng without calculating all terms <n? Yep. I could use a hash, I'm betting most hashes would do statistical randomness pretty well. ...but finding a hash function for an array that didn't turn {1} into a hash of 1, and {2} into a hash ...
by Nexuapex
Tue Jul 15, 2008 5:16 am UTC
Forum: Gaming
Topic: If you could combine two(or more) games
Replies: 228
Views: 59345

Re: If you could combine two(or more) games

Starcraft + Warcraft 3 = Starcraft with a world editor that doesn't suck. The Orange Box + <Blizzard game here> = Portal and HL2 on Macs. (Headcrab zombies in TF2 would also be amusing.) (So would GLaDOS chattering happily as you trek through Ravensholm, shearing zombies in half with gravity-gun-pr...
by Nexuapex
Tue Jul 15, 2008 1:02 am UTC
Forum: Computer Science
Topic: "Random access" PRNG
Replies: 20
Views: 3725

Re: "Random access" PRNG

I can't use a machine-specific file, the seed must be machine-independent. Some more detail: imagine the pseudocode that would draw a portion of this generated image: int stored_seed = get_stored_seed(); int x, y; for (y = origin_y; y < viewport_height; y++) { srand(stored_seed ^ y); for (x = 0; x <...
by Nexuapex
Mon Jul 14, 2008 7:19 pm UTC
Forum: Computer Science
Topic: "Random access" PRNG
Replies: 20
Views: 3725

"Random access" PRNG

I've been poking around PRNGs , and am trying to find one that allows random access without a (relatively) time-consuming reseeding process. For example, the Mersenne twister algorithms I've seen regenerate a 624-word internal state every time the seed changes, which is not something you want to do ...
by Nexuapex
Sun Jun 29, 2008 5:12 pm UTC
Forum: Gaming
Topic: Diablo III
Replies: 2188
Views: 383607

Re: I WAITED TILL 5 AM AND ITS HERE DIABLO 3

I see no reason why group-style loot would apply only to bosses. The other source I heard said plainly that "whatever you see on the ground is yours."

Also, if you're expecting awesome graphics, stop expecting awesome graphics and play a game from a company with a shorter development cycle.
by Nexuapex
Fri Feb 29, 2008 3:20 pm UTC
Forum: Movies and TV Shows
Topic: LOST
Replies: 454
Views: 37746

Re: LOST

Jumping-back-and-forth-between-Desmond-and-Penny-each-trying-to-tell-the-other-that-they-won't-give-up: Blah.

Self-referential scripts: Woot. (Past!Faraday: "A time paradox? How uninspired.")
by Nexuapex
Tue Oct 02, 2007 1:50 am UTC
Forum: Coding
Topic: Fizzbuzz!
Replies: 81
Views: 227879

Re: Fizzbuzz!

As small as I can figure out how to get it in Lua:

Code: Select all

for i=1,100 do s=(i%3<1 and"Fizz"or"")..(i%5<1 and"Buzz"or"")print(#s<1 and i or s)end
by Nexuapex
Mon Sep 17, 2007 2:53 am UTC
Forum: Coding
Topic: TextWrangler on Mac
Replies: 11
Views: 15230

TextWrangler is, indeed, simply a text editor. You'd have to use the command line to compile and run your program.
by Nexuapex
Sun Sep 09, 2007 12:22 pm UTC
Forum: Coding
Topic: [HTML/CSS] making a div be "attached"
Replies: 4
Views: 2026

ToLazyToThink wrote:Note that that wont work with IE. If you care, there are hacks you can use to fake position fixed with IE.

I don't have the links handy, but google knows all.

I believe it works in IE 7, but not IE 6.
by Nexuapex
Fri Sep 07, 2007 12:36 pm UTC
Forum: Mathematics
Topic: My mathematical speed bump
Replies: 36
Views: 6143

That's part of your problem if you try to put things in your head like THAT, my goodness Well, I don't, really, it just took me a minute to see what was going on. You can always multiply by one, but there are so many different ways of doing so. I'm guessing here that k is nonzero (if k=0 then the e...
by Nexuapex
Thu Sep 06, 2007 3:41 pm UTC
Forum: Mathematics
Topic: My mathematical speed bump
Replies: 36
Views: 6143

Here's another suggestion: make what you're given look like what you know. You know lim ϴ→0 (sin ϴ)/ϴ, so find a way to make h/(sin kh) look like it. That is my general method of solving things. The problem arises when I don't know how . Looking at your solution, I can puzzl...
by Nexuapex
Thu Sep 06, 2007 12:47 pm UTC
Forum: Mathematics
Topic: My mathematical speed bump
Replies: 36
Views: 6143

Try not to use any "facts" to solve problems. Just start from the definitions and apply common sense (no theorems). You'll be amazed at how easy a lot of problems are if you do this. Theorems and useful identities will come to you naturally after a while. There's a famous quote that "...
by Nexuapex
Thu Sep 06, 2007 4:56 am UTC
Forum: Mathematics
Topic: My mathematical speed bump
Replies: 36
Views: 6143

...but go just a little bit in either direction and you basically have x/x(because for small x sin(x) ~ x)the closer you get to 0, the closer sin(x) gets to x, so as you're approaching 0 from either direction, you're approaching x/x, or just 1 In your other example, it's the exact same thing, sin(k...
by Nexuapex
Thu Sep 06, 2007 4:39 am UTC
Forum: Mathematics
Topic: My mathematical speed bump
Replies: 36
Views: 6143

A cheat-sheet that you made yourself is a huge help, I found. Not that I've had any reason to do complex limits or integrations for a few years, since it doesn't exactly come up a lot in day-to-day life. I think that'd be a good idea... Can anyone recommend a good online resource with a logical pro...
by Nexuapex
Thu Sep 06, 2007 4:18 am UTC
Forum: Mathematics
Topic: My mathematical speed bump
Replies: 36
Views: 6143

Well you're learning math theory in that class >_> What you're having trouble with is retaining the theory that you understand just fine in class long enough to use it on a problem, or you understand it just fine but simply haven't practiced enough to KNOW it, both are common symptoms And I think t...
by Nexuapex
Thu Sep 06, 2007 4:11 am UTC
Forum: Mathematics
Topic: My mathematical speed bump
Replies: 36
Views: 6143

My advice is don't constantly add things. Get used to working out how facts are derived from other facts. That's kind of at odds with my five-mornings-a-week class with the problems for a concept due two class periods from when it's explained. :( For instance lim ϴ→0 (sin ϴ)/e...
by Nexuapex
Thu Sep 06, 2007 3:44 am UTC
Forum: General
Topic: I found this really interesting for some morbid reason
Replies: 28
Views: 3086

You know what I thought when reading that?

“Note to self: If I ever get a personal telephone call from the President, be very afraid.â€
by Nexuapex
Thu Sep 06, 2007 3:42 am UTC
Forum: Mathematics
Topic: My mathematical speed bump
Replies: 36
Views: 6143

My mathematical speed bump

So, I'm a computer programmer by nature. And I'm taking Calculus I this semester, and was just reminded of something I've run up against every time I've worked with math in the past. We're on limits now and, while I can handle the concepts just fine (especially given how many times they're repeated ...
by Nexuapex
Thu Sep 06, 2007 3:14 am UTC
Forum: General
Topic: Who the dickens are you?
Replies: 10922
Views: 2347465

NSLog(@"Hello, world.");

Hi. I'm 18. I'm currently a second-semester sophomore in college (a small Christian college in the midwest). I'm mostly into computers, computer programming, and computer science (I'm primarily a Mac person, Linux being pretty sweet and Microsoft only evil every third day). I like reading (mostly fa...

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