Class: Scrambler::RandomState::CubeState

Inherits:
Object
  • Object
show all
Defined in:
lib/scrambler/random_state/cube_state.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CubeState

Returns a new instance of CubeState.



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# File 'lib/scrambler/random_state/cube_state.rb', line 6

def initialize
  @orientation = [0] * 8
  @permutation = [0, 1, 2, 3, 4, 5, 6, 7]
end

Instance Attribute Details

#orientation ⇒ Object (readonly)

Returns the value of attribute orientation.



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# File 'lib/scrambler/random_state/cube_state.rb', line 4

def orientation
  @orientation
end

#permutation ⇒ Object (readonly)

Returns the value of attribute permutation.



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# File 'lib/scrambler/random_state/cube_state.rb', line 4

def permutation
  @permutation
end

Instance Method Details

#turn!(layer) ⇒ Object 



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# File 'lib/scrambler/random_state/cube_state.rb', line 11

def turn!(layer)
  o = @orientation.clone
  p = @permutation.clone
  case layer
  when :R
    @permutation = [p[1], p[5], p[2], p[3], p[0], p[4], p[6], p[7]]
    @orientation = [(o[1] + 1) % 3, (o[5] + 2) % 3, o[2], o[3], (o[0] + 2) % 3, (o[4] + 1) % 3, o[6], o[7]]
  when :F
    @permutation = [p[0], p[2], p[6], p[3], p[4], p[1], p[5], p[7]]
    @orientation = [o[0], (o[2] + 1) % 3, (o[6] + 2) % 3, o[3], o[4], (o[1] + 2) % 3, (o[5] + 1) % 3, o[7]]
  when :U
    @permutation = [p[3], p[0], p[1], p[2], p[4], p[5], p[6], p[7]]
    @orientation = [o[3], o[0], o[1], o[2], o[4], o[5], o[6], o[7]]
  end
end