Class: Knot::Grid

Inherits:
Matrix
  • Object
show all
Defined in:
lib/knot/grid.rb

Overview

The grid is a Matrix of cells (arranged as rows and columns.)

ruby-doc.org/stdlib-3.0.2/libdoc/matrix/rdoc/Matrix.html

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#position(i, j) ⇒ Object (readonly)

The grid can be navigated with absolute coordinates i, j.



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# File 'lib/knot/grid.rb', line 11

def position
  @position
end

Instance Method Details

#e ⇒ Object 



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# File 'lib/knot/grid.rb', line 29

def e
  rel 0, 1
end

#e2 ⇒ Object 



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# File 'lib/knot/grid.rb', line 61

def e2
  rel 0, 2
end

#n ⇒ Object 



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# File 'lib/knot/grid.rb', line 21

def n
  rel -1, 0
end

#n2 ⇒ Object 



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# File 'lib/knot/grid.rb', line 53

def n2
  rel -2, 0
end

#ne ⇒ Object 



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# File 'lib/knot/grid.rb', line 25

def ne
  rel -1, 1
end

#ne2 ⇒ Object 



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# File 'lib/knot/grid.rb', line 57

def ne2
  rel -2, 2
end

#nw ⇒ Object 



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# File 'lib/knot/grid.rb', line 49

def nw
  rel -1, -1
end

#nw2 ⇒ Object 



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# File 'lib/knot/grid.rb', line 81

def nw2
  rel -2, -2
end

#rel(i, j) ⇒ Object

Nearby cells accessed relatively with i, j.



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# File 'lib/knot/grid.rb', line 17

def rel i, j
  self[*@position + Vector[i, j]]
end

#s ⇒ Object 



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# File 'lib/knot/grid.rb', line 37

def s
  rel 1, 0
end

#s2 ⇒ Object 



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# File 'lib/knot/grid.rb', line 69

def s2
  rel 2, 0
end

#se ⇒ Object 



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# File 'lib/knot/grid.rb', line 33

def se
  rel 1, 1
end

#se2 ⇒ Object 



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# File 'lib/knot/grid.rb', line 65

def se2
  rel 2, 2
end

#sw ⇒ Object 



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# File 'lib/knot/grid.rb', line 41

def sw
  rel 1, -1
end

#sw2 ⇒ Object 



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# File 'lib/knot/grid.rb', line 73

def sw2
  rel 2, -2
end

#w ⇒ Object 



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# File 'lib/knot/grid.rb', line 45

def w
  rel 0, -1
end

#w2 ⇒ Object 



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# File 'lib/knot/grid.rb', line 77

def w2
  rel 0, -2
end