I would suggest:

How to get randomly-biased dice number.

1. Associate six 8-bit registers with six dice numbers.
2. Init them with 128 values.
3. On each loop subtract 5 from  that register which
   number was hit until it reached 0, of course.
   And add 1 to other registers until they reached 255.
4. Get 16-bit Sum of the registers.
5. Get random value from 0 to the Sum.("White noise"-Jinx
   is a Guru, "Black noise"-Roman is a Master ;-) :o)
6. Summarize register values until this sum reached
   previous "The Sum". Last register's number involved
   with this summarizing is the "randomly-biased dice
   number".
7. Go to "3."

No multiplication. No 32-bit calcs. "Numbers which had
been rolled less often" are of more probability to be hit.

 Mike
---
Sorry, if someone has expressed the idea, I hadn't chance
of reading the thread: summertime seaside matters.



Brendan Moran wrote:
> Has anyone considered making normalized dice?
>
> The problem with truely random dice is that it can make certain
> games
> boring.  For instance:  playing Risk, some of my friends and I have
> discovered that we will occasionally get on streaks of really bad
> rolling, where we should have little or no resistance to our force,
> yet our 30 some armies get devastated by no more than 7 enemy
> armies.
>
> So, one of my friends, who is a computer scientist came up with the
> idea to make dice that biased, not completely altered, but biased
> the
> roll such that there was not equal probability of hitting any number
> after the first roll.  Instead there was a weighting towards numbers
> which had been rolled less often.

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