python program: DRN (2x open-ended D6 dice)

[Horst F. JENS]

The manual on page 5 explain very good the DRN (open-ended-dice) system.
So i made a small python script to test it out. Improved my knowlege about the game's random numbers, maybe it is useful for others too.

you need python from http://www.python.org to run this script.

Code:

---

# works like a normal dice, but you can throw the dice again

# if the dice rolls the highest possible number.

# If the dice rolls the highest possible number, the number will be added, then

# 1 will be substracted and the dice rolls again.

# allows (theoretical) extremly highs values, but only in extrem rare situations



import random



def domdice(sides=6):

    "rolls a dice. sides must be > 1"

    if sides < 2:

        raise SystemExit

    sum = 1

    dice = sides

    while dice == sides:

        sum -=1

        dice = random.randint(1,sides)

        sum += dice

    return sum



#-------- try it out ------



results = {}

for x in xrange(10000):

    roll = domdice()+domdice()

    if roll in results:

        results[roll] += 1

    else:

        results[roll] = 1



for key in range(1,max(results),1):

    if key in results:

        print "%d  %d" % (key, results[key])





  

---