lib/plugins/ics/lib/match_handler.rb

   1 # Copyright (c) 2009 Paolo Capriotti <p.capriotti@gmail.com>
   2 #
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 2 of the License, or
   6 # (at your option) any later version.
   7
   8 require 'interaction/match'
   9 require_bundle 'ics', 'icsplayer'
  10
  11 module ICS
  12
  13 #
  14 # Handler for ICS games.
  15 #
  16 # Responds to ICS protocol events creating and updating matches.
  17 # Matches are stored in the @matches instance variable. It is possible to
  18 # have more than one match running on FICS because of the observe feature.
  19 #
  20 class MatchHandler
  21   include Observer
  22
  23   attr_reader :matches
  24
  25   def initialize(user, protocol)
  26     @protocol = protocol
  27     @matches = { }
  28     @user = user
  29
  30     protocol.add_observer(self)
  31   end
  32
  33   def on_creating_game(data)
  34     match = Match.new(data[:game],
  35         :kind => :ics,
  36         :editable => false,
  37         :time_running => true)
  38     @matches[data[:number]] = [match, data.merge(:type => :played)]
  39   end
  40
  41   def on_end_game(data)
  42     entry = @matches.delete(data[:game_number])
  43     if entry
  44       match, info = entry
  45       match.close(data[:result], data[:message])
  46     end
  47   end
  48
  49   def on_end_examination(number)
  50     on_end_game(:game_number => number,
  51                 :result => '',
  52                 :message => '')
  53   end
  54
  55   def on_examination_revert(data)
  56     match, match_info = @matches[data[:game_number]]
  57     if match_info
  58       match_info[:about_to_revert_to] = data[:index]
  59     end
  60   end
  61
  62   def on_style12(style12)
  63     match, match_info = @matches[style12.game_number]
  64     if match.nil?
  65       if style12.relation == Style12::Relation::EXAMINING
  66         # Examined games on ics have no header, so we have to be prepared to
  67         # create a new match on the fly at this point.
  68         # Create an editable Game.dummy match for the moment.
  69         match = Match.new(Game.dummy, :kind => :ics, :editable => true, :navigable => true)
  70         match_info = style12.match_info.merge(:type => :examined)
  71         @matches[style12.game_number] = [match, match_info]
  72
  73         # We want to change the game type at some point, so request the game
  74         # movelist to the server.
  75         @protocol.connection.send_text('moves')
  76         @protocol.observe_limited(:movelist) do |movelist|
  77           puts "movelist = #{movelist.inspect}"
  78           true
  79         end
  80       else
  81         # ignore spurious style12 events
  82         return
  83       end
  84     end
  85
  86     if match.started?
  87       match_info[:icsplayer].on_style12(style12)
  88     else
  89       rel = style12.relation
  90       state = style12.state
  91       turns = [state.turn, state.opposite_turn(state.turn)]
  92       @user.color, opponent_color =
  93         if rel == Style12::Relation::MY_MOVE
  94           turns
  95         elsif rel == Style12::Relation::NOT_MY_MOVE
  96           turns.reverse
  97         else
  98           [nil, turns[1]]
  99         end
 100       opponent = ICSPlayer.new(
 101         lambda {|msg| @protocol.connection.send_text(msg) },
 102         opponent_color,
 103         match,
 104         match_info)
 105       match_info[:icsplayer] = opponent
 106
 107       player = @user
 108
 109       # in examined games, playing moves for the opponent is allowed
 110       if @user.color.nil?
 111         player = DummyPlayer.new(state.turn)
 112         @user.add_controlled_player(player)
 113         @user.add_controlled_player(opponent)
 114         @user.premove = false
 115       else
 116         @user.premove = true
 117       end
 118
 119       player.name = match_info[player.color][:name]
 120
 121       match.register(player)
 122       match.register(opponent)
 123
 124       match.start(player)
 125       match.start(opponent)
 126
 127       raise "couldn't start match" unless match.started?
 128       unless match_info[:icsapi].same_state(match.state, style12.state)
 129         match.history.state = style12.state
 130       end
 131
 132       @user.reset(match)
 133
 134       match.update_time(style12.time)
 135     end
 136
 137
 138   end
 139 end
 140
 141 end