src/.svn/text-base/clockwise-p1.rb.netbeans-base

   1 #!/usr/bin/ruby
   2 #
   3 # == Synopsis
   4 #
   5 # Play one move of a Trap the Cap game
   6 #
   7 # == Usage
   8 # clockwise-p1
   9 #  Game state file read on STDIN
  10 #  Move produced on STDOUT
  11 #
  12 # == Author
  13 # Neil Smith
  14
  15
  16 require 'libttc'
  17 require 'rdoc/usage'
  18
  19 def more_clockwise(this, other)
  20   here = this.destination.place
  21   there = other.destination.place
  22
  23   # if both are on a spoke, choose the one with the lowest number (nearer the rim)
  24   if here =~ /.c./ and there =~ /.c./
  25     # break ties by preferring the most clockwise arc
  26     if here[-1] == there[-1]
  27       return here[0] <=> there[0]
  28     else
  29       return -1 * (here[-1] <=> there[-1])
  30     end
  31     # If one is one a spoke and the other is on the rim, choose the one on the rim
  32   elsif here =~ /.c./ or there =~ /.c./
  33     return -1 * (here.length <=> there.length)
  34     # If one is in the 'f' rim section and the other in the 'a' rim section, choose the 'a'
  35   elsif here[0,1] == 'a' and there[0,1] == 'f'
  36     return +1
  37   elsif here[0,1] == 'f' and there[0,1] == 'a'
  38     return -1
  39     # Otherwise, choose the one with highest arc code
  40   else
  41     return here <=> there
  42   end
  43
  44 end
  45
  46 # Get the current game state
  47 game_lines = readlines
  48 game, moves, next_roll = Game.read_game(game_lines)
  49 game.apply_moves moves
  50
  51 # The piece to move is the uncaptured one of mine with the lowest number
  52 my_pieces = game.pieces.values.select {|p| p.colour == game.current_player and not p.captured}
  53 piece_to_move = (my_pieces.sort_by {|p| p.name})[0]
  54
  55 # find the most clockwise move
  56 potential_moves = game.possible_moves(next_roll).select {|m| m.piece == piece_to_move}
  57 sorted_moves = potential_moves.sort {|x, y| more_clockwise x, y}
  58 best_move = sorted_moves[-1]
  59
  60 # return that move
  61 puts best_move
  62
  63