index.coffee

_ = require("underscore");

# https://github.com/BinaryMuse/trie-hard
dictionary = require "./dictionary"

letters = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']
scores  = [ 1,  3,  3,  2,  1,  4,  2,  4,  1,  8,  5,  1,  3,  1,  1,  3,  10, 1,  1,  1,  1,  4,  4,  8,  4,  10]
scoresByLetter = _.object(letters, scores)

class ScrabbleGame
  @RIGHT = 1
  @DOWN = 2

  playWord: (word, row, column, direction) =>

module.exports = ScrabbleGame

package.json

{
  "name": "scrabble-scoring",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "mocha --compilers coffee:coffee-script/register test/**_test.coffee"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "chai": "^2.1.2",
    "mocha": "^2.2.1",
    "prefix-dictionary": "0.0.2",
    "sinon": "^1.14.1",
    "sinon-chai": "^2.7.0",
    "trie-hard": "^0.1.0",
    "underscore": "^1.8.2"
  },
  "devDependencies": {
    "coffee-script": "^1.10.0"
  }
}

scrabble_test.coffee

{ expect}  = require "chai"

ScrabbleGame = require "../index.coffee"

describe "Scrabble", ->
  game = move = null

  describe "with no bonus tiles", ->
    beforeEach ->
      game = new ScrabbleGame()

    it "scores the first word", ->
      move = game.playWord("button", 7, 7, ScrabbleGame.RIGHT)
      expect(move).to.eql({valid: true, score: 8})

    # it "doesn't score invalid words", ->
    #   move = game.playWord("asdf", 7, 7, ScrabbleGame.RIGHT)
    #   expect(move).to.eql({valid: false, score: 0})
    #
    # it "requires subsequent moves to share existing tiles", ->
    #   move = game.playWord("button", 7, 7, ScrabbleGame.RIGHT)
    #   expect(move).to.eql({valid: true, score: 8})

    #   move = game.playWord("home", 9, 7, ScrabbleGame.DOWN)
    #   expect(move).to.eql({valid: false, score: 0})
    #
    # it "allows and scores crossed words", ->
    #   move = game.playWord("button", 7, 7, ScrabbleGame.RIGHT)
    #   expect(move).to.eql({valid: true, score: 8})
    #
    #   move = game.playWord("snow", 6, 12, ScrabbleGame.DOWN)
    #   expect(move).to.eql({valid: true, score: 7})
    #
    # it "doesn't allow playing off the edge of the board", ->
    #   move = game.playWord("button", 7, 7, ScrabbleGame.RIGHT)
    #   expect(move).to.eql({valid: true, score: 8})
    #
    #   move = game.playWord("snow", 6, 12, ScrabbleGame.DOWN)
    #   expect(move).to.eql({valid: true, score: 7})
    #
    #   move = game.playWord("winning", 9, 12, ScrabbleGame.RIGHT)
    #   expect(move).to.eql({valid: false, score: 0})
    #
    # it "scores correctly when multiple words are crossed", ->
    #   move = game.playWord("button", 7, 7, ScrabbleGame.RIGHT)
    #   expect(move).to.eql({valid: true, score: 8})
    #
    #   move = game.playWord("bad", 7, 7, ScrabbleGame.DOWN)
    #   expect(move).to.eql({valid: true, score: 6})
    #
    #   move = game.playWord("apian", 8, 7, ScrabbleGame.RIGHT)
    #   expect(move).to.eql({valid: true, score: 17})

  describe "with bonus tiles", ->
    beforeEach ->
      game = new ScrabbleGame
        doubleWord: [[ ]]