14 lines
376 B
CoffeeScript
14 lines
376 B
CoffeeScript
elo = require('elo-rank')()
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createPlayer = ->
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{rating: 1000}
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calculate = (player, matches, options = {}) ->
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playerRating = player.rating
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for {opponent, score} in matches
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expected = elo.getExpected(playerRating, opponent.rating)
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playerRating = elo.updateRating(expected, score, playerRating)
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{rating: playerRating}
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module.exports = {createPlayer, calculate}
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