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upsilon_maze.rb
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upsilon_maze.rb
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require 'theseus/maze'
module Theseus
# An upsilon maze is one in which the field is tesselated into octogons and
# squares:
#
# _ _ _ _
# / \_/ \_/ \_/ \
# | |_| |_| |_| |
# \_/ \_/ \_/ \_/
# |_| |_| |_| |_|
# / \_/ \_/ \_/ \
# | |_| |_| |_| |
# \_/ \_/ \_/ \_/
#
# Upsilon mazes in Theseus support weaving, but not symmetry (yet).
#
# maze = Theseus::UpsilonMaze.generate(width: 10)
# puts maze
class UpsilonMaze < Maze
def potential_exits_at(x, y) #:nodoc:
if (x+y) % 2 == 0 # octogon
[N, S, E, W, NW, NE, SW, SE]
else # square
[N, S, E, W]
end
end
def perform_weave(from_x, from_y, to_x, to_y, direction) #:nodoc:
apply_move_at(to_x, to_y, direction << UNDER_SHIFT)
apply_move_at(to_x, to_y, opposite(direction) << UNDER_SHIFT)
nx, ny = move(to_x, to_y, direction)
[nx, ny, direction]
end
end
end