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Re: how would i make this math.randomseed(tick())

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FlameYeti is not online. FlameYeti
Joined: 14 Jan 2009
Total Posts: 22158
23 Aug 2015 09:55 PM
random = maps[math.random(1,#maps)]

where would i add the tick?
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Ripepperoni is not online. Ripepperoni
Joined: 04 Jul 2010
Total Posts: 5715
23 Aug 2015 09:56 PM
on a different line about it
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mycheeze is not online. mycheeze
Joined: 27 Jun 2011
Total Posts: 6748
23 Aug 2015 10:08 PM
are you serious
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FlameYeti is not online. FlameYeti
Joined: 14 Jan 2009
Total Posts: 22158
23 Aug 2015 10:09 PM
yes im stupid now help me plssssssss
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ironrobot914 is not online. ironrobot914
Joined: 08 Jan 2010
Total Posts: 183
23 Aug 2015 10:09 PM
They're meanies. Here:
http://wiki.roblox.com/index.php?title=Absolute_beginner%27s_guide_to_scripting
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FlameYeti is not online. FlameYeti
Joined: 14 Jan 2009
Total Posts: 22158
23 Aug 2015 10:14 PM
thanks, but that didnt even mention math.randomseed
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ironrobot914 is not online. ironrobot914
Joined: 08 Jan 2010
Total Posts: 183
23 Aug 2015 10:17 PM
frick
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morashsPeasant is not online. morashsPeasant
Joined: 06 Jan 2011
Total Posts: 4944
23 Aug 2015 10:18 PM
@iron lol you;re the bigger minnie
Just put this at the top of your script and no where else
math.randomseed(tick());


while true do the do
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ironrobot914 is not online. ironrobot914
Joined: 08 Jan 2010
Total Posts: 183
23 Aug 2015 10:21 PM
@morashs How can I be mean? I'm an innocent scripter with only 100 posts!
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JarodOfOrbiter is not online. JarodOfOrbiter
Joined: 17 Feb 2011
Total Posts: 20029
23 Aug 2015 11:00 PM
"Just put this at the top of your script and no where else
math.randomseed(tick());"

The only reason I came here to this thread was to tell the OP and majority of everyone who replies that THIS IS USELESS!
This actually makes it LESS random! Roblox does a perfectly fine job of setting the seed on their own. And with this, you are almost 100% guaranteed huge streaks of first values.
Exempli gratia:
Join game, number picked is 7, second number picked is 2, leave game;
Join game, number picked is 7, second number picked is 2, leave game;
Join game, number picked is 7, second number picked is 9, leave game;
Join game, number picked is 7, second number picked is 0, leave game;
Join game, number picked is 7, second number picked is 0, leave game;
Join game, number picked is 7, second number picked is 3, leave game;
Join game, number picked is 7, second number picked is 3, leave game;
Join game, number picked is 7, second number picked is 3, leave game;
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FlameYeti is not online. FlameYeti
Joined: 14 Jan 2009
Total Posts: 22158
23 Aug 2015 11:06 PM
jar

well right now it doesnt even pick a different map, so

any other ideas
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Casualist is not online. Casualist
Joined: 26 Jun 2014
Total Posts: 4443
23 Aug 2015 11:14 PM
Roblox's prng has issues wherein if you seed it with tick() the most significant bits will still control the first few random numbers while successive numbers are influenced more by the least significant bits,

To remove the bias add this at the top of your code
math.randomseed(tick())
for i = 1, math.random(50,100) do
math.random()
end
--//bleeds off the first ~75 numbers to remove MSB biasing.
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cntkillme is not online. cntkillme
Joined: 07 Apr 2008
Total Posts: 44956
23 Aug 2015 11:16 PM
Does Roblox use vanilla Lua's random function (which just calls the C function rand) or its own?

I don't think I ever had problems like this in vanilla Lua but I can't be too sure.
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Casualist is not online. Casualist
Joined: 26 Jun 2014
Total Posts: 4443
23 Aug 2015 11:19 PM
@cnt Depends on how you bind it//what language you bind it with.
I didn't notice anything with rbx.lua's math.random until this year, so it may have been messed up when they implemented math.noise (don't even get me started on everything wrong with math.noise).
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cntkillme is not online. cntkillme
Joined: 07 Apr 2008
Total Posts: 44956
23 Aug 2015 11:21 PM
Just regular 'ol Lua 5.1.5 (from the lua.org site).
I wonder if LuaJIT has this problem

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Casualist is not online. Casualist
Joined: 26 Jun 2014
Total Posts: 4443
23 Aug 2015 11:25 PM
Haven't played much with lua standalone. Probably a non-issue. If you really wanted to make sure you could implement PCG as your prng and that'll pretty much eliminate any issues the standard LCG has.
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JarodOfOrbiter is not online. JarodOfOrbiter
Joined: 17 Feb 2011
Total Posts: 20029
23 Aug 2015 11:27 PM
"prng"
What flavor?
I might like them.
I do enjoy some prngles from time to time.
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cntkillme is not online. cntkillme
Joined: 07 Apr 2008
Total Posts: 44956
23 Aug 2015 11:27 PM
I rarely have a need for random numbers anyways, but that really does sound something that is too good to be true (pcg-random org)
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Casualist is not online. Casualist
Joined: 26 Jun 2014
Total Posts: 4443
23 Aug 2015 11:30 PM
@cnt It blows pretty much every non csprng out of the water, but the jury is still out on whether or not it is (or can be adapted to be) cryptographically secure.
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cooldude999921 is not online. cooldude999921
Joined: 13 Aug 2011
Total Posts: 3702
23 Aug 2015 11:31 PM
hi cnt :o


i'm studying z80 asm and 86-64 asm.

I started z80 because I found an old TI-85 and I heard that if you use this hack, it allows the user to code with memory-efficient z80 asm.


just wanted to put that out there

ʏᴏᴜ ᴛʜᴏᴜɢʜᴛ ʏᴏᴜ ᴄᴏᴜʟᴅ ᴅʀᴀɢ ᴍᴇ ᴛᴏ ᴛʜᴇ ʙᴏᴛᴛᴏᴍ ᴏғ ᴛʜᴇ ʟᴀᴋᴇ sᴏ ʏᴏᴜ ᴄᴏᴜʟᴅ ᴇᴀᴛ ᴍᴇ ʟᴀᴛᴇʀ... ᴡᴇʟʟ ɢᴜᴇss ᴡʜᴀᴛ ᴘᴜɴᴋ... ɪᴍ ᴀ ғɪsʜ... ᴡɪᴛʜ ʟᴇɢs
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JarodOfOrbiter is not online. JarodOfOrbiter
Joined: 17 Feb 2011
Total Posts: 20029
23 Aug 2015 11:32 PM
Can't they just test it to see if it's cryptographically secure?
What was the testing method... I think one of the steps was making sure that given a megabit, it must be impossible or very difficult to determine the next bit?
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cntkillme is not online. cntkillme
Joined: 07 Apr 2008
Total Posts: 44956
23 Aug 2015 11:35 PM
Hi, also the TI-85 should have the Asm, AsmPrgm, and AsmComp functions built-in, so no need to hack it to run assembly.

Just create a program, go to Catalog -> AsmPrgm then after a new line, type the program. So something like (pseudo-code, this will most likely crash your calc.):

: AsmPrgm
: 001F3C
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JarodOfOrbiter is not online. JarodOfOrbiter
Joined: 17 Feb 2011
Total Posts: 20029
23 Aug 2015 11:35 PM
I had a TI-85 once. That was for a little while though. My Dad gave it to my when my TI-83's display broke. Then, after two or so years since the TI-85's display broke (Second display, second calculator), we finally found a TI-86. So far, the screen is fine. But they sure seem to have problems with these displays after a while.
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FlameYeti is not online. FlameYeti
Joined: 14 Jan 2009
Total Posts: 22158
23 Aug 2015 11:35 PM
my thread turned into nerd talk aaaaaaa help
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cntkillme is not online. cntkillme
Joined: 07 Apr 2008
Total Posts: 44956
23 Aug 2015 11:36 PM
Oh wait, nvm I lied.

My TI-84 has it built-in and so does my cousin's TI-83, so I assumed the TI-85 would since it's a newer? brand.
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