Class: Yahtzee::Scorecard

Inherits:
Object
  • Object
show all
Defined in:
lib/yahtzee.rb

Constant Summary collapse

@@bonus_value = 
35
@@full_house_value = 
25
@@small_straight_value = 
30
@@large_straight_value = 
40
@@yahtzee_value = 
50
@@yahtzee_bonus_value = 
100

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Scorecard

Returns a new instance of Scorecard.



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# File 'lib/yahtzee.rb', line 141

def initialize
  @upper_section = [ :aces, :twos, :threes, :fours, :fives, :sixes ]
  @lower_section = [ :three_of_a_kind, :four_of_a_kind, :full_house, :small_straight,
                     :large_straight, :yahtzee, :chance, :yahtzee_bonus ]
  
  @categories = { 
    :aces   => -1, 
    :twos   => -1,
    :threes => -1,
    :fours  => -1,
    :fives  => -1,
    :sixes  => -1,
    :upper_section_bonus => 0,

    :three_of_a_kind => -1,
    :four_of_a_kind  => -1,
    :full_house      => -1,
    :small_straight  => -1,
    :large_straight  => -1,
    :yahtzee         => -1,
    :chance          => -1,
    :yahtzee_bonus   => 0,
    
    :upper_section_subtotal => 0,
    :upper_section_total    => 0,
    :lower_section_total    => 0,
    
    :grand_total => 0
  }
end

Instance Method Details

#add_section(sect) ⇒ Object 



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# File 'lib/yahtzee.rb', line 275

def add_section sect
  sum = 0

  @categories.each do |key, value|
    if (sect.include? key) && value > -1
      sum += value
    end
  end

  return sum
end

#calculate_dice(dice, joker) ⇒ Object 



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# File 'lib/yahtzee.rb', line 172

def calculate_dice dice, joker
  cats = {
    :aces   => 0,
    :twos   => 0,
    :threes => 0,
    :fours  => 0,
    :fives  => 0,
    :sixes  => 0,
    :three_of_a_kind => 0,
    :four_of_a_kind  => 0,
    :full_house      => 0,
    :small_straight  => 0,
    :large_straight  => 0,
    :yahtzee         => 0,
    :chance          => 0
  }
  
  # upper section
  dice.each do |i|
    case i
    when 1
      cats[:aces]   += 1
    when 2
      cats[:twos]   += 2
    when 3
      cats[:threes] += 3
    when 4
      cats[:fours]  += 4
    when 5
      cats[:fives]  += 5
    when 6
      cats[:sixes]  += 6
    end
  end

  # lower section
  freq = [0,0,0,0,0,0]
  sum  = 0
  dice.size.times do |i|
    sum += dice[i]
    freq[dice[i]-1] += 1
  end
  sfreq = freq.sort.reverse
  max  = sfreq[0] # number of most frequent dice
  smax = sfreq[1] # number of second most frequent
  
  small = false
  large = false
  ssum  = 0
  sdice = dice.sort.uniq
  sdice.size.times do |i|
    ssum += sdice[i]
  end
  large = true if sdice.length >= 5 and (ssum == 15 or ssum == 20)
  small = true if sdice.length >= 4 and (ssum == 10 or ssum == 14 or ssum == 18) or large
  
  
  cats[:three_of_a_kind] = sum if (max >= 3 || joker)
  cats[:four_of_a_kind]  = sum if (max >= 4 || joker)
  cats[:full_house]      = @@full_house_value if ((max == 3 and smax == 2) || joker)
  cats[:small_straight]  = @@small_straight_value if (small || joker)
  cats[:large_straight]  = @@large_straight_value if (large || joker)
  cats[:yahtzee]         = @@yahtzee_value if (max >= 5 || joker)
  cats[:chance]          = sum
  
  return cats
end

#calculate_totals ⇒ Object 



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# File 'lib/yahtzee.rb', line 287

def calculate_totals
  @categories[:upper_section_subtotal] = add_section @upper_section
  
  @categories[:upper_section_total] = @categories[:upper_section_subtotal]
  @categories[:upper_section_bonus] = @@bonus_value if @categories[:upper_section_subtotal] >= 63
  @categories[:upper_section_total] += @categories[:upper_section_bonus]

  @categories[:lower_section_total] = add_section @lower_section

  @categories[:grand_total] = @categories[:upper_section_total] + @categories[:lower_section_total]
end

#get_cats ⇒ Object 



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# File 'lib/yahtzee.rb', line 299

def get_cats
  return @categories
end

#score(cat, dice, joker) ⇒ Object 



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# File 'lib/yahtzee.rb', line 240

def score cat, dice, joker
  pot = calculate_dice dice, joker
  
  case cat
  when (:aces or :twos or :threes or :fours or :fives or :sixes)
    if @categories[cat] == -1
      @categories[cat] = pot[cat]
      calculate_totals
      return 1
    end
  when :yahtzee
    return -1 if joker
    case @categories[:yahtzee]
    when -1
      @categories[:yahtzee] = pot[:yahtzee]
      calculate_totals
      return 1
    when @@yahtzee_value
      @categories[:yahtzee_bonus] += @@yahtzee_bonus_value
    end
    which = @upper_section[dice[0]-1]
    if @categories[which] == -1 
      return score which, dice, joker
    end
    return 0
  else
    if @categories[cat] == -1
      @categories[cat] = pot[cat]
      calculate_totals
      return 1
    end
  end
  return -1
end