lib/interaction/match.rb

   1 require 'observer_utils'
   2 require 'history'
   3
   4 module Player
   5   include Observer
   6 end
   7
   8 class Match
   9   include Observable
  10
  11   attr_reader :game
  12   attr_reader :history
  13   attr_reader :kind
  14
  15   def initialize(game, kind = :local)
  16     @game = game
  17     @players = { } # player => ready
  18     @history = nil
  19     @kind = kind
  20   end
  21
  22   def register(player)
  23     return false if @history
  24     return false if @players.has_key?(player)
  25     return false if complete?
  26     return false unless @game.players.include?(player.color)
  27
  28     @players[player] = false
  29     fire :complete if complete?
  30     true
  31   end
  32
  33   def start(player)
  34     return false if @history
  35     return false unless complete?
  36     return false unless @players[player] == false
  37
  38     @players[player] = true
  39     if @players.values.all?
  40       state = @game.state.new
  41       state.setup
  42       @history = History.new(state)
  43       fire :started
  44     end
  45
  46     true
  47   end
  48
  49   def move(player, move, state = nil)
  50     return false unless @history
  51     # if player is nil, assume the current player is moving
  52     if player == nil
  53       player = current_player
  54     else
  55       return false unless @players.has_key?(player)
  56       return false unless player.color == @history.state.turn
  57     end
  58
  59     validate = @game.validator.new(@history.state)
  60     valid = validate[move]
  61     return false unless valid
  62
  63     old_state = @history.state
  64     state = old_state.dup
  65     state.perform! move
  66     @history.add_move(state, move)
  67
  68     broadcast player, :move => {
  69       :player => player,
  70       :move => move,
  71       :state => state,
  72       :old_state => old_state }
  73     true
  74   end
  75
  76   def complete?
  77     @game.players.all? do |c|
  78       @players.keys.find {|p| p.color == c }
  79     end
  80   end
  81
  82   def started?
  83     ! ! @history
  84   end
  85
  86   def state
  87     @history.state
  88   end
  89
  90   def index
  91     @history.current
  92   end
  93
  94   private
  95
  96   def broadcast(player, event)
  97     fire event
  98     @players.each_key do |p|
  99       p.update any_to_event(event) unless p == player
 100     end
 101   end
 102
 103   def current_player
 104     @players.keys.find {|p| p.color == state.turn }
 105   end
 106 end