doc/classes/Potential_player.src/.svn/text-base/M000007.html.svn-base

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   8   <title>best_move (Potential_player)</title>
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  13   <pre><span class="ruby-comment cmt"># File lib/libpplayer.rb, line 34</span>
  14   <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">best_move</span>(<span class="ruby-identifier">game</span>, <span class="ruby-identifier">die_result</span>)
  15     <span class="ruby-identifier">me</span> = <span class="ruby-identifier">game</span>.<span class="ruby-identifier">current_player</span>
  16     <span class="ruby-identifier">possible_moves</span> = <span class="ruby-identifier">game</span>.<span class="ruby-identifier">possible_moves</span>(<span class="ruby-identifier">die_result</span>, <span class="ruby-identifier">me</span>)
  17     <span class="ruby-identifier">scored_moves</span> = <span class="ruby-identifier">possible_moves</span>.<span class="ruby-identifier">collect</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">m</span><span class="ruby-operator">|</span>
  18       <span class="ruby-keyword kw">begin</span>
  19         <span class="ruby-identifier">game</span>.<span class="ruby-identifier">apply_move!</span> <span class="ruby-identifier">m</span>
  20         <span class="ruby-identifier">score</span> = <span class="ruby-identifier">score_position</span>(<span class="ruby-identifier">game</span>, <span class="ruby-identifier">me</span>)
  21 <span class="ruby-comment cmt">#        game.undo_move!</span>
  22       <span class="ruby-keyword kw">rescue</span> <span class="ruby-constant">GameWonNotice</span>
  23         <span class="ruby-identifier">score</span> = <span class="ruby-value">10000</span>
  24       <span class="ruby-keyword kw">ensure</span>
  25         <span class="ruby-identifier">game</span>.<span class="ruby-identifier">undo_move!</span>
  26       <span class="ruby-keyword kw">end</span>
  27       <span class="ruby-identifier">puts</span> <span class="ruby-node">&quot;#{m} scores #{score}&quot;</span> <span class="ruby-keyword kw">if</span> <span class="ruby-ivar">@verbose</span>
  28       [<span class="ruby-identifier">m</span>, <span class="ruby-identifier">score</span>]
  29     <span class="ruby-keyword kw">end</span>
  30     <span class="ruby-identifier">best_move</span> = (<span class="ruby-identifier">scored_moves</span>.<span class="ruby-identifier">max</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">a</span>, <span class="ruby-identifier">b</span><span class="ruby-operator">|</span> <span class="ruby-identifier">a</span>[<span class="ruby-value">1</span>] <span class="ruby-operator">&lt;=&gt;</span> <span class="ruby-identifier">b</span>[<span class="ruby-value">1</span>]})[<span class="ruby-value">0</span>]
  31   <span class="ruby-keyword kw">end</span></pre>
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