Dobble ·

Description

A set of helper utilites for symbol configurations of the Dobble card game

API documentation

generate(n, checkSanity)

Generates Dobble card configurations.

Parameters

     n {number} Number of symbols per card

     [checkSanity=true] {boolean} Whether to run a sanity check on results

Returns

    {Array.<Array.<number>>} List of generated cards (which are lists of symbol indices)

Example

> import { generate } from 'dobble';
> generate(3)
[ [ 0, 1, 2 ],
  [ 0, 3, 4 ],
  [ 0, 5, 6 ],
  [ 1, 3, 5 ],
  [ 1, 4, 6 ],
  [ 2, 3, 6 ],
  [ 2, 4, 5 ] ]

isCardSymbolCountValid(n)

Returns whether the count of symbols per card is valid. It has to be a prime number + 1.

Parameters

     n {number} Desired number of symbols per card

Returns

    {boolean}

Example

> const { isCardSymbolCountValid } = require('dobble');
> isCardSymbolCountValid(8)
true
> isCardSymbolCountValid(9)
false

getTotalSymbolCount(n)

Returns the total number of symbols needed to provide n symbols per card.

Parameters

     n {number} Desired number of symbols per card

Returns

    {number} Total number of symbols needed

Example

> import { getTotalSymbolCount } from 'dobble';
> getTotalSymbolCount(8);
57

getCardSymbolCount(n)

Returns the number of symbols per card that can be generated with n total symbols.

Parameters

     n {number} Total number of symbols

Returns

    {number} Number of symbols per card

Example

> import { getCardSymbolCount } from 'dobble';
> getCardSymbolCount(57);
8

checkDeckSanity(deck)

Returns whether each card has exactly 1 symbol in common with any other card.

Parameters

     deck {Array.<Array.<number>>} Value returned from generate

Returns

    {boolean}

Example

> import { checkDeckSanity } from 'dobble';
> checkDeckSanity([
  [ 0, 1, 2 ],
  [ 0, 3, 4 ],
  [ 0, 5, 6 ],
  [ 1, 3, 5 ],
  [ 1, 4, 6 ],
  [ 2, 3, 6 ],
  [ 2, 4, 5 ]
]);
true
> checkDeckSanity([
  [0, 1, 2],
  [0, 1, 3]
]);
false