Thursday, August 18, 2022
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random – Methods for “fairer” cube rolls?


Suppose I’ve a recreation with 6 gamers, every of which will get a payout on a unique aspect of a D6 roll. The D6 is rolled many instances over the course of the sport.

This yields a fair payout in the long term, utilizing an unbiased D6. Nevertheless, my recreation is just not lengthy sufficient for the payouts to revert to the imply. Due to this fact, I wish to make a biased cube mechanism, the place rolls that haven’t come up just lately are extra seemingly.

One strategy I can consider is to simulate a deck of playing cards:

  1. Take a listing [ 1, 2, 3, 4, 5, 6 ]
  2. Repeat the checklist n instances (the place n is a few a number of of the everyday recreation size)
  3. Shuffle the checklist
  4. To make a “roll”, pop a quantity off of the checklist

The issue with this strategy is selecting n… too low and we threat working out of rolls; too excessive and the rolls usually are not biased sufficient.

What algorithms / methods can be found right here?

Additionally it is helpful if the algorithm may be simply defined to the participant.

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