Class: Cube

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Cube

New cubes are instantiated in a solved state with a clean history.



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# File 'lib/rubyks.rb', line 5

def initialize
  @cube = [[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[2,2,2,2,2,2,2,2,2],[3,3,3,3,3,3,3,3,3],[4,4,4,4,4,4,4,4,4],[5,5,5,5,5,5,5,5,5]]
  @hist = []
end

Instance Attribute Details

#cube ⇒ Object

Returns the value of attribute cube.



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# File 'lib/rubyks.rb', line 2

def cube
  @cube
end

#hist ⇒ Object

Returns the value of attribute hist.



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# File 'lib/rubyks.rb', line 2

def hist
  @hist
end

Instance Method Details

#b ⇒ Object

Turns back face clockwise



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# File 'lib/rubyks.rb', line 198

def b
  cubetemp = Marshal.load(Marshal.dump(@cube))

  cubetemp[0][2] = @cube[3][2]
  cubetemp[0][3] = @cube[3][3]
  cubetemp[0][4] = @cube[3][4]

  cubetemp[1][2] = @cube[0][2]
  cubetemp[1][3] = @cube[0][3]
  cubetemp[1][4] = @cube[0][4]

  cubetemp[3][2] = @cube[5][6]
  cubetemp[3][3] = @cube[5][7]
  cubetemp[3][4] = @cube[5][8]

  cubetemp[5][6] = @cube[1][2]
  cubetemp[5][7] = @cube[1][3]
  cubetemp[5][8] = @cube[1][4]



  cubetemp[2][1] = @cube[2][7]
  cubetemp[2][2] = @cube[2][8]
  cubetemp[2][3] = @cube[2][1]
  cubetemp[2][4] = @cube[2][2]
  cubetemp[2][5] = @cube[2][3]
  cubetemp[2][6] = @cube[2][4]
  cubetemp[2][7] = @cube[2][5]
  cubetemp[2][8] = @cube[2][6]

  @hist << 'b'
  @cube = Marshal.load(Marshal.dump(cubetemp))
  self
end

#b2 ⇒ Object

Turns back face twice



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# File 'lib/rubyks.rb', line 242

def b2
  self.b.b
  @hist << 'b2'
  self
end

#br ⇒ Object

Turns back face counter-clockwise



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# File 'lib/rubyks.rb', line 233

def br
  3.times do 
    self.b
    @hist.pop
  end
  @hist << "br"
  self
end

#clean_hist ⇒ Object

Removes any 4 of the same move in a row in @hist. Any move repeated four times ends the cube in the state it started in.



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# File 'lib/rubyks.rb', line 11

def clean_hist
  i = 0
  until i == @hist.length
    if @hist[i] == @hist[i+1] && @hist[i] == @hist[i+2] && @hist[i] == @hist[i+3] 
      4.times {@hist.delete_at(i)}
      i = -1
    end
   i += 1
  end

  i = 0
  until i == @hist.length
    if @hist[i] == @hist[i+1] && @hist[i].length < 3
      @hist.delete_at(i)
      @hist[i] = "#{@hist[i]}2"
      i = -1
    end
   i += 1
  end

  @hist.join(', ')
end

#colorize ⇒ Object

Colorizes integers for output to terminal.



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# File 'lib/rubyks.rb', line 777

def colorize
  @cube.each do |this|
    this.collect! do |num|
      if num == 1
        num = "\e[36m#{num}\e[0m"
      elsif num == 2
        num = "\e[33m#{num}\e[0m"
      elsif num ==3
        num = "\e[31m#{num}\e[0m"
      elsif num == 4
        num = "\e[32m#{num}\e[0m"
      elsif num ==5 
        num = "\e[34m#{num}\e[0m"
      else
        num = num
      end
    end
  end
  self
end

#corners_solve ⇒ Object

Solves for corners on first layer without affecting first layer cross.



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# File 'lib/rubyks.rb', line 572

def corners_solve
  corners = []

  i = 1

  until @cube[0].uniq == [@cube[0][0]] && @cube[1][4] == @cube[1][0] && @cube[2][6] == @cube[2][0] && @cube[3][2] == @cube[3][0] && @cube[4][2] == @cube[4][0]

    corners = [@cube[1][8],@cube[1][2],@cube[2][4],@cube[2][2],@cube[3][4],@cube[3][6],@cube[4][6],@cube[4][8]]
    until corners.include?(0)
      self.rr.d.r.turn
      corners = [@cube[1][8],@cube[1][2],@cube[2][4],@cube[2][2],@cube[3][4],@cube[3][6],@cube[4][6],@cube[4][8]]
    end
    
    until @cube[3][6] == @cube[0][0] || @cube[4][6] == @cube[0][0] 
      self.d
    end

    if @cube[3][6] == @cube[0][0]
      self.d.turn until @cube[5][4] == @cube[3][0]
      self.rr.dr.r
    end

    if @cube[4][6] == @cube[0][0]
      self.d.turn until @cube[5][4] == @cube[4][0]
      self.f.d.fr
    end
    i += 1
    self.turn

    if i > 50
      self.u until @cube[0][6] != @cube[0][0]
      self.d until @cube[5][4] == @cube[0][0]
      self.lr.d.l
      self.u until @cube[1][5] == @cube[1][0]
      i = 1
    end
  end
  self
end

#cross_shuffle ⇒ Object

Shuffles cross cubies on top, doesn’t affect lower layers but does shuffle top corners.



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# File 'lib/rubyks.rb', line 491

def cross_shuffle
   self.f.u.r.ur.rr.fr
  self
end

#cross_solve ⇒ Object

Solves for cross on first layer. Affects all other layers.



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# File 'lib/rubyks.rb', line 515

def cross_solve 
  downcross = []
  i = 1
  until @cube[0][1] == @cube[0][0] && @cube[0][3] == @cube[0][0]  && @cube[0][5] == @cube[0][0] && @cube[0][7] == @cube[0][0]
       
    until downcross.include?(@cube[0][0]) 
       downcross = []
       self.rr.d.r.l.dr.lr.turn
       downcross = [@cube[5][1],@cube[5][3],@cube[5][5], @cube[5][7]]
       i += 1
       if i > 10
         self.turn until @cube[0][1] != @cube[0][0] 
         self.l.b 
         i = 1
       end
    end

    until @cube[5][3] == cube[0][0]
      i =0
      self.d

      if i > 59 
        self.print
        gets
        end
        i+=1
    end

    until @cube[0][7] != @cube[0][0]
      self.u
    end
   self.f.f
   downcross = []
  end

  until @cube[4][3] == @cube[4][0] && @cube[1][5] == @cube[1][0]
    until @cube[1][5] == @cube[1][0]        
      self.u
    end
    self.turn if @cube[4][3] != @cube[4][0]
    i += 1

    if i > 10   
      self.cross_swap
      i = 1
    end
  end


  if @cube[2][7] != @cube[2][0]
    self.cross_swap
  end

  self
end

#cross_swap ⇒ Object

Swaps [0] and [0]. Doesn’t affect lower layers but does affect top corners.



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# File 'lib/rubyks.rb', line 497

def cross_swap
  self.rr.u.u.r.u.rr.u.r.u
  self
end

#d ⇒ Object

Turns bottom face clockwise



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# File 'lib/rubyks.rb', line 298

def d
  cubetemp = Marshal.load(Marshal.dump(@cube))

  cubetemp[1][8] = @cube[2][2]
  cubetemp[1][1] = @cube[2][3]
  cubetemp[1][2] = @cube[2][4]

  cubetemp[2][2] = @cube[3][4]
  cubetemp[2][3] = @cube[3][5]
  cubetemp[2][4] = @cube[3][6]

  cubetemp[3][4] = @cube[4][6]
  cubetemp[3][5] = @cube[4][7]
  cubetemp[3][6] = @cube[4][8]

  cubetemp[4][6] = @cube[1][8]
  cubetemp[4][7] = @cube[1][1]
  cubetemp[4][8] = @cube[1][2]

  cubetemp[5][1] = @cube[5][7]
  cubetemp[5][2] = @cube[5][8]
  cubetemp[5][3] = @cube[5][1]
  cubetemp[5][4] = @cube[5][2]
  cubetemp[5][5] = @cube[5][3]
  cubetemp[5][6] = @cube[5][4]
  cubetemp[5][7] = @cube[5][5]
  cubetemp[5][8] = @cube[5][6]

  @hist << 'd'
  @cube = Marshal.load(Marshal.dump(cubetemp))
  self
end

#d2 ⇒ Object

Turns bottom face twice



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# File 'lib/rubyks.rb', line 340

def d2
  self.d.d
  @hist << 'l2'
  self
end

#decolorize ⇒ Object

Converts colorized cube back to integers



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# File 'lib/rubyks.rb', line 799

def decolorize
  if @cube.flatten.include?(5) == false
    @cube.each do |this|
      this.collect! do |num|
        if num == 0
          num = num
        else
          num = num.gsub(/[^\d]/, '')[2].to_i if num.class == String
        end
      end
    end
  end
end

#dr ⇒ Object

Turns bottom face counter-clockwise



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# File 'lib/rubyks.rb', line 331

def dr
  3.times do 
    self.d
    @hist.pop
  end
  @hist << "dr"
  self
end

#f ⇒ Object

Turns front face clockwise



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# File 'lib/rubyks.rb', line 149

def f
  cubetemp = Marshal.load(Marshal.dump(@cube))

  cubetemp[0][6] = @cube[1][6]
  cubetemp[0][7] = @cube[1][7]
  cubetemp[0][8] = @cube[1][8]

  cubetemp[1][6] = @cube[5][2]
  cubetemp[1][7] = @cube[5][3]
  cubetemp[1][8] = @cube[5][4]

  cubetemp[5][2] = @cube[3][6]
  cubetemp[5][3] = @cube[3][7]
  cubetemp[5][4] = @cube[3][8]

  cubetemp[3][8] = @cube[0][8]
  cubetemp[3][7] = @cube[0][7]
  cubetemp[3][6] = @cube[0][6]

  cubetemp[4][1] = @cube[4][7]
  cubetemp[4][2] = @cube[4][8]
  cubetemp[4][3] = @cube[4][1]
  cubetemp[4][4] = @cube[4][2]
  cubetemp[4][5] = @cube[4][3]
  cubetemp[4][6] = @cube[4][4]
  cubetemp[4][7] = @cube[4][5]
  cubetemp[4][8] = @cube[4][6]

  @hist << 'f'
  @cube = Marshal.load(Marshal.dump(cubetemp))
  self
end

#f2 ⇒ Object

Turns front face twice



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# File 'lib/rubyks.rb', line 191

def f2
  self.f.f
  @hist << 'f2'
  self
end

#fr ⇒ Object

Turns front face counter-clockwise



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# File 'lib/rubyks.rb', line 182

def fr
  3.times do 
    self.f
    @hist.pop
  end
  @hist << "fr"
  self
end

#invert ⇒ Object

Turns cube over TWICE, swapping top and bottom faces. Like “f2” but rest of cube moves too.



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# File 'lib/rubyks.rb', line 484

def invert
  self.turn_over.turn_over
  @hist << "invert" 
  self
end

#l ⇒ Object

Turns left face clockwise



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# File 'lib/rubyks.rb', line 50

def l
  cubetemp = Marshal.load(Marshal.dump(@cube))

  cubetemp[0][1] = @cube[2][1]
  cubetemp[0][2] = @cube[2][2]
  cubetemp[0][8] = @cube[2][8]

  cubetemp[2][1] = @cube[5][1]
  cubetemp[2][2] = @cube[5][2]
  cubetemp[2][8] = @cube[5][8]

  cubetemp[5][1] = @cube[4][1]
  cubetemp[5][2] = @cube[4][2]
  cubetemp[5][8] = @cube[4][8]

  cubetemp[4][1] = @cube[0][1]
  cubetemp[4][2] = @cube[0][2]
  cubetemp[4][8] = @cube[0][8]


  cubetemp[1][1] = @cube[1][7]
  cubetemp[1][2] = @cube[1][8]
  cubetemp[1][3] = @cube[1][1]
  cubetemp[1][4] = @cube[1][2]
  cubetemp[1][5] = @cube[1][3]
  cubetemp[1][6] = @cube[1][4]
  cubetemp[1][7] = @cube[1][5]
  cubetemp[1][8] = @cube[1][6]

  @cube = Marshal.load(Marshal.dump(cubetemp))
  @hist << 'l'
  self
end

#l2 ⇒ Object

Turns left face twice



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# File 'lib/rubyks.rb', line 93

def l2
  self.l.l
  @hist << 'l2'
  self
end

#last_move ⇒ Object

Re-orients cubies of [0], [0], and [0] without affecting anything else.



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# File 'lib/rubyks.rb', line 509

def last_move
  self.rr.d.d.r.f.d.d.fr.ur.f.d.d.fr.rr.d.d.r.u
  self
end

#lr ⇒ Object

Turns left face counter-clockwise



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# File 'lib/rubyks.rb', line 84

def lr
  3.times do 
    self.l
    @hist.pop
  end
  @hist << 'lr'
  self
end

#print ⇒ Object

Outputs an ascii representation of the cube arrays



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# File 'lib/rubyks.rb', line 814

def print
  puts "                    ---------"
  puts "                    |#{@cube[1][8]}||#{@cube[1][1]}||#{@cube[1][2]}|"
  puts "                    ---------"
  puts "                    |#{@cube[1][7]}||#{@cube[1][0]}||#{@cube[1][3]}|"
  puts "                    ---------"
  puts "                    |#{@cube[1][6]}||#{@cube[1][5]}||#{@cube[1][4]}|"
  puts "                    ---------"
  puts "--------- --------- --------- ---------"
  puts "|#{@cube[5][8]}||#{@cube[5][1]}||#{@cube[5][2]}| |#{@cube[4][8]}||#{@cube[4][1]}||#{@cube[4][2]}| |#{@cube[0][8]}||#{@cube[0][1]}||#{@cube[0][2]}| |#{@cube[2][8]}||#{@cube[2][1]}||#{@cube[2][2]}|"
  puts "--------- --------- --------- ---------"
  puts "|#{@cube[5][7]}||#{@cube[5][0]}||#{@cube[5][3]}| |#{@cube[4][7]}||#{@cube[4][0]}||#{@cube[4][3]}| |#{@cube[0][7]}||#{@cube[0][0]}||#{@cube[0][3]}| |#{@cube[2][7]}||#{@cube[2][0]}||#{@cube[2][3]}|"
  puts "--------- --------- --------- ---------"
  puts "|#{@cube[5][6]}||#{@cube[5][5]}||#{@cube[5][4]}| |#{@cube[4][6]}||#{@cube[4][5]}||#{@cube[4][4]}| |#{@cube[0][6]}||#{@cube[0][5]}||#{@cube[0][4]}| |#{@cube[2][6]}||#{@cube[2][5]}||#{@cube[2][4]}|"
  puts "--------- --------- --------- ---------"
  puts "                    ---------"
  puts "                    |#{@cube[3][8]}||#{@cube[3][1]}||#{@cube[3][2]}|"
  puts "                    ---------"
  puts "                    |#{@cube[3][7]}||#{@cube[3][0]}||#{@cube[3][3]}|"
  puts "                    ---------"
  puts "                    |#{@cube[3][6]}||#{@cube[3][5]}||#{@cube[3][4]}|"
  puts "                    ---------"
end

#r ⇒ Object

Turns right face clockwise



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# File 'lib/rubyks.rb', line 100

def r
  cubetemp = Marshal.load(Marshal.dump(@cube))

  cubetemp[0][4] = @cube[4][4]
  cubetemp[0][5] = @cube[4][5]
  cubetemp[0][6] = @cube[4][6]

  cubetemp[4][4] = @cube[5][4]
  cubetemp[4][5] = @cube[5][5]
  cubetemp[4][6] = @cube[5][6]

  cubetemp[5][4] = @cube[2][4]
  cubetemp[5][5] = @cube[2][5]
  cubetemp[5][6] = @cube[2][6]

  cubetemp[2][4] = @cube[0][4]
  cubetemp[2][5] = @cube[0][5]
  cubetemp[2][6] = @cube[0][6]

  cubetemp[3][1] = @cube[3][7]
  cubetemp[3][2] = @cube[3][8]
  cubetemp[3][3] = @cube[3][1]
  cubetemp[3][4] = @cube[3][2]
  cubetemp[3][5] = @cube[3][3]
  cubetemp[3][6] = @cube[3][4]
  cubetemp[3][7] = @cube[3][5]
  cubetemp[3][8] = @cube[3][6]

  @hist << 'r'
  @cube = Marshal.load(Marshal.dump(cubetemp))
  self
end

#r2 ⇒ Object

Turns right face twice



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# File 'lib/rubyks.rb', line 142

def r2
  self.r.r
  @hist << 'r2'
  self
end

#rr ⇒ Object

Turns right face counter-clockwise



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# File 'lib/rubyks.rb', line 133

def rr
  3.times do 
    self.r
    @hist.pop
  end
  @hist << "rr"
  self
end

#scramble ⇒ Object

Scrambles cube with 100 random moves and clears history



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# File 'lib/rubyks.rb', line 35

def scramble
  100.times do 
    turn = rand(5)
    self.l if turn == 0
    self.r if turn == 1
    self.u if turn == 2
    self.d if turn == 3
    self.f if turn == 4
    self.b if turn == 5
  end
  @hist = []
  self 
end

#second_layer_solve ⇒ Object

Solves for middle layer when first layer is solved without affecting first layer.



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# File 'lib/rubyks.rb', line 613

def second_layer_solve
  self.invert
  mids = []
  x = @cube[0][0]

  until mids.include?(x) == false && @cube[1][7] == @cube[1][0] && @cube[1][3] == @cube[1][0] && @cube[3][3] == @cube[3][0] && @cube[3][7] == @cube[3][0] && @cube[2][1] == @cube[2][0] && @cube[2][5] == @cube[2][0] && @cube[4][1] == @cube[4][0] && @cube[4][5] == @cube[4][0]

    until @cube[4][5] == @cube[4][0] && @cube[3][7] == @cube[3][0]
    i = 0

      until @cube[4][3] != @cube[0][0] && @cube[0][7] != @cube[0][0] 
        self.u
        i += 1

        if i > 50
          self.cross_swap
          self.u.r.ur.rr.ur.fr.u.f
          i = 1
        end
      end

      until @cube[4][3] == @cube[4][0]
        self.ur.turn
      end

      if @cube[0][7] != @cube[3][0]
        self.cross_swap
      end
      self.u.r.ur.rr.ur.fr.u.f
    end
    self.turn
    mids = [@cube[1][3],@cube[1][7],@cube[2][1],@cube[2][5],@cube[3][3],@cube[3][7],@cube[4][1],@cube[4][5]]
  end

  self
end

#show ⇒ Object

outputs each side as an array on its own line



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# File 'lib/rubyks.rb', line 767

def show
  p @cube[0]
  p @cube[1]
  p @cube[2]
  p @cube[3]
  p @cube[4]
  p @cube[5]
end

#simple_solve ⇒ Object

solve invokes all layer solving methods in sequence, solving from any legal state



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# File 'lib/rubyks.rb', line 755

def simple_solve
  testarray = [] 
  @cube.each {|side| testarray << side.uniq}
  return self if testarray.flatten.length == 6

  self.cross_solve.corners_solve.second_layer_solve.top_cross.top_corners
  self.clean_hist
  self.invert
  self
end

#top_corner_shuffle ⇒ Object

Shuffles top corners without affecting lower layers or top cross.



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# File 'lib/rubyks.rb', line 503

def top_corner_shuffle
  self.rr.u.l.ur.r.u.lr.ur
  self
end

#top_corners ⇒ Object

Solves last layer corners when all other layers and cross have been completed.



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# File 'lib/rubyks.rb', line 703

def top_corners
  stay_corner = [@cube[0][2], @cube[1][4],@cube[2][8]]
  i = 1

  until stay_corner.sort == [@cube[1][0],@cube[2][0],@cube[0][0]].sort
    self.turn
    stay_corner = [@cube[0][2], @cube[1][4],@cube[2][8]]
    i += 1

    if i > 4
      self.top_corner_shuffle
      i = 0
      stay_corner = [@cube[0][2], @cube[1][4],@cube[2][8]]
    end
  end
  
  until @cube[0][2] == @cube[0][0]
    self.turn.turn.last_move.turn.turn
  end

  stay4 = [@cube[0][4], @cube[2][6],@cube[3][2]]
  until stay4.sort == [@cube[2][0],@cube[3][0],@cube[0][0]].sort
    
  self.top_corner_shuffle
    stay4 = [@cube[0][4], @cube[2][6],@cube[3][2]]
  end

  self.turn.last_move.turn.turn.turn until @cube[0][4] == @cube[0][0]

  if @cube[0][4] == @cube[0][0] && @cube[0][6] != @cube[0][0]
    i = 1


    testarray = [] 
    until testarray.flatten.uniq.length == 6

      @cube.each {|side| testarray << side.uniq}

      self.last_move
      i += 1
      if i > 100
        i = 1
      end
    end
  end

  if @cube[0][6] != @cube[0][0]
    self.last_move
  end
end

#top_cross ⇒ Object

Solves for last layer cross when first two layers are completed



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# File 'lib/rubyks.rb', line 651

def top_cross
   topcross = [@cube[0][1],@cube[0][3],@cube[0][5],@cube[0][7]]
  i = 1
  bigi = 0
  until topcross.count(@cube[0][0]) >= 2
    self.cross_shuffle
    bigi += 1
    i += 1

    if i > 15
      self.turn
      i = 1
    end

    if bigi > 100
      puts "derp"
      p topcross
    gets
    end
  topcross = [@cube[0][1],@cube[0][3],@cube[0][5],@cube[0][7]]
  end

  if (topcross[0] == @cube[0][0] && topcross[2] == @cube[0][0]) || (topcross[1] == @cube[0][0] && topcross[3] == @cube[0][0])
    self.turn until @cube[0][7] == @cube[0][0] 
    self.cross_swap
  end
  
  self.turn until @cube[0][1] == @cube[0][0] && @cube[0][3] == @cube[0][0]

  i = 1
  until topcross.uniq == [@cube[0][0]]
    self.cross_shuffle

    if i > 20
      self.turn
    end
    topcross = [@cube[0][1],@cube[0][3],@cube[0][5],@cube[0][7]]
  end
  i = 1
  until @cube[1][5] == @cube[1][0] && @cube[4][3] == @cube[4][0]
    self.u
    i += 1
    if i >17 
      self.cross_swap.turn.cross_swap
      i = 1
    end
  end
  self.cross_swap if @cube[3][1] != @cube[3][0]
  self
end

#turn ⇒ Object

Turns cube clockwise ONCE, like “u” but rest of cube moves too.



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# File 'lib/rubyks.rb', line 347

def turn 
  cubetemp = [[],[],[],[],[],[]]

  cubetemp[0][0] = @cube[0][0]
  cubetemp[0][1] = @cube[0][7]
  cubetemp[0][2] = @cube[0][8]
  cubetemp[0][3] = @cube[0][1]
  cubetemp[0][4] = @cube[0][2]
  cubetemp[0][5] = @cube[0][3]
  cubetemp[0][6] = @cube[0][4]
  cubetemp[0][7] = @cube[0][5]
  cubetemp[0][8] = @cube[0][6]

  cubetemp[1][0] = @cube[4][0]
  cubetemp[1][1] = @cube[4][7]
  cubetemp[1][2] = @cube[4][8]
  cubetemp[1][3] = @cube[4][1]
  cubetemp[1][4] = @cube[4][2]
  cubetemp[1][5] = @cube[4][3]
  cubetemp[1][6] = @cube[4][4]
  cubetemp[1][7] = @cube[4][5]
  cubetemp[1][8] = @cube[4][6]

  cubetemp[2][0] = @cube[1][0]
  cubetemp[2][1] = @cube[1][7]
  cubetemp[2][2] = @cube[1][8]
  cubetemp[2][3] = @cube[1][1]
  cubetemp[2][4] = @cube[1][2]
  cubetemp[2][5] = @cube[1][3]
  cubetemp[2][6] = @cube[1][4]
  cubetemp[2][7] = @cube[1][5]
  cubetemp[2][8] = @cube[1][6]

  cubetemp[3][0] = @cube[2][0]
  cubetemp[3][1] = @cube[2][7]
  cubetemp[3][2] = @cube[2][8]
  cubetemp[3][3] = @cube[2][1]
  cubetemp[3][4] = @cube[2][2]
  cubetemp[3][5] = @cube[2][3]
  cubetemp[3][6] = @cube[2][4]
  cubetemp[3][7] = @cube[2][5]
  cubetemp[3][8] = @cube[2][6]

  cubetemp[4][0] = @cube[3][0]
  cubetemp[4][1] = @cube[3][7]
  cubetemp[4][2] = @cube[3][8]
  cubetemp[4][3] = @cube[3][1]
  cubetemp[4][4] = @cube[3][2]
  cubetemp[4][5] = @cube[3][3]
  cubetemp[4][6] = @cube[3][4]
  cubetemp[4][7] = @cube[3][5]
  cubetemp[4][8] = @cube[3][6]

  cubetemp[5][0] = @cube[5][0]
  cubetemp[5][1] = @cube[5][3]
  cubetemp[5][2] = @cube[5][4]
  cubetemp[5][3] = @cube[5][5]
  cubetemp[5][4] = @cube[5][6]
  cubetemp[5][5] = @cube[5][7]
  cubetemp[5][6] = @cube[5][8]
  cubetemp[5][7] = @cube[5][1]
  cubetemp[5][8] = @cube[5][2]

  @hist << 'turn'
  @cube = cubetemp
  self
end

#turn_over ⇒ Object

Turns cube over ONCE, like “fr” but rest of cube moves too.



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# File 'lib/rubyks.rb', line 416

def turn_over 
  cubetemp = [[],[],[],[],[],[]]

  cubetemp[0][0] = @cube[3][0]
  cubetemp[0][1] = @cube[3][1]
  cubetemp[0][2] = @cube[3][2]
  cubetemp[0][3] = @cube[3][3]
  cubetemp[0][4] = @cube[3][4]
  cubetemp[0][5] = @cube[3][5]
  cubetemp[0][6] = @cube[3][6]
  cubetemp[0][7] = @cube[3][7]
  cubetemp[0][8] = @cube[3][8]

  cubetemp[1][0] = @cube[0][0]
  cubetemp[1][1] = @cube[0][1]
  cubetemp[1][2] = @cube[0][2]
  cubetemp[1][3] = @cube[0][3]
  cubetemp[1][4] = @cube[0][4]
  cubetemp[1][5] = @cube[0][5]
  cubetemp[1][6] = @cube[0][6]
  cubetemp[1][7] = @cube[0][7]
  cubetemp[1][8] = @cube[0][8]

  cubetemp[2][0] = @cube[2][0]
  cubetemp[2][1] = @cube[2][7]
  cubetemp[2][2] = @cube[2][8]
  cubetemp[2][3] = @cube[2][1]
  cubetemp[2][4] = @cube[2][2]
  cubetemp[2][5] = @cube[2][3]
  cubetemp[2][6] = @cube[2][4]
  cubetemp[2][7] = @cube[2][5]
  cubetemp[2][8] = @cube[2][6]

  cubetemp[3][0] = @cube[5][0]
  cubetemp[3][1] = @cube[5][5]
  cubetemp[3][2] = @cube[5][6]
  cubetemp[3][3] = @cube[5][7]
  cubetemp[3][4] = @cube[5][8]
  cubetemp[3][5] = @cube[5][1]
  cubetemp[3][6] = @cube[5][2]
  cubetemp[3][7] = @cube[5][3]
  cubetemp[3][8] = @cube[5][4]

  cubetemp[4][0] = @cube[4][0]
  cubetemp[4][1] = @cube[4][3]
  cubetemp[4][2] = @cube[4][4]
  cubetemp[4][3] = @cube[4][5]
  cubetemp[4][4] = @cube[4][6]
  cubetemp[4][5] = @cube[4][7]
  cubetemp[4][6] = @cube[4][8]
  cubetemp[4][7] = @cube[4][1]
  cubetemp[4][8] = @cube[4][2]

  cubetemp[5][0] = @cube[1][0]
  cubetemp[5][1] = @cube[1][5]
  cubetemp[5][2] = @cube[1][6]
  cubetemp[5][3] = @cube[1][7]
  cubetemp[5][4] = @cube[1][8]
  cubetemp[5][5] = @cube[1][1]
  cubetemp[5][6] = @cube[1][2]
  cubetemp[5][7] = @cube[1][3]
  cubetemp[5][8] = @cube[1][4]

  @cube = cubetemp
  self
end

#u ⇒ Object

Turns top face clockwise



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# File 'lib/rubyks.rb', line 249

def u
  cubetemp = Marshal.load(Marshal.dump(@cube))

  cubetemp[1][4] = @cube[4][2]
  cubetemp[1][5] = @cube[4][3]
  cubetemp[1][6] = @cube[4][4]

  cubetemp[4][2] = @cube[3][8]
  cubetemp[4][3] = @cube[3][1]
  cubetemp[4][4] = @cube[3][2]

  cubetemp[3][8] = @cube[2][6]
  cubetemp[3][1] = @cube[2][7]
  cubetemp[3][2] = @cube[2][8]

  cubetemp[2][6] = @cube[1][4]
  cubetemp[2][7] = @cube[1][5]
  cubetemp[2][8] = @cube[1][6]

  cubetemp[0][1] = @cube[0][7]
  cubetemp[0][2] = @cube[0][8]
  cubetemp[0][3] = @cube[0][1]
  cubetemp[0][4] = @cube[0][2]
  cubetemp[0][5] = @cube[0][3]
  cubetemp[0][6] = @cube[0][4]
  cubetemp[0][7] = @cube[0][5]
  cubetemp[0][8] = @cube[0][6]

  @hist << 'u'
  @cube = Marshal.load(Marshal.dump(cubetemp))
  self  
end

#u2 ⇒ Object

turns top face twice



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# File 'lib/rubyks.rb', line 291

def u2
  self.u.u
  @hist << 'u2'
  self
end

#ur ⇒ Object

turns top face counter-clockwise



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# File 'lib/rubyks.rb', line 282

def ur
  3.times do 
    self.u
    @hist.pop
  end
  @hist << "ur"
  self
end