doc/classes/Game.src/.svn/text-base/M000025.html.svn-base

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   8   <title>possible_moves (Game)</title>
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  13   <pre><span class="ruby-comment cmt"># File lib/libttc.rb, line 430</span>
  14   <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">possible_moves</span>(<span class="ruby-identifier">die_result</span>, <span class="ruby-identifier">player</span> = <span class="ruby-ivar">@current_player</span>)
  15     <span class="ruby-identifier">moves</span> = []
  16     <span class="ruby-ivar">@pieces</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">key</span>, <span class="ruby-identifier">piece</span><span class="ruby-operator">|</span>
  17       <span class="ruby-comment cmt"># only move current player's pieces, and only if they're not captured</span>
  18       <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">piece</span>.<span class="ruby-identifier">colour</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">player</span> <span class="ruby-keyword kw">and</span> (<span class="ruby-keyword kw">not</span> <span class="ruby-identifier">piece</span>.<span class="ruby-identifier">captured</span>)
  19         (<span class="ruby-ivar">@board</span>.<span class="ruby-identifier">valid_moves</span>[<span class="ruby-identifier">piece</span>.<span class="ruby-identifier">position</span>.<span class="ruby-identifier">place</span>][<span class="ruby-identifier">die_result</span>]).<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">destination</span><span class="ruby-operator">|</span>
  20           <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">destination</span>.<span class="ruby-identifier">safe?</span>
  21             <span class="ruby-keyword kw">if</span> (<span class="ruby-ivar">@pieces</span>.<span class="ruby-identifier">find_all</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">k</span>, <span class="ruby-identifier">p</span><span class="ruby-operator">|</span> <span class="ruby-identifier">p</span>.<span class="ruby-identifier">position</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">destination</span>}).<span class="ruby-identifier">length</span> <span class="ruby-operator">&lt;</span> <span class="ruby-value">3</span>
  22               <span class="ruby-identifier">moves</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-constant">Move</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">piece</span>, <span class="ruby-identifier">destination</span>, <span class="ruby-keyword kw">false</span>)
  23             <span class="ruby-keyword kw">end</span>
  24           <span class="ruby-keyword kw">else</span>
  25             <span class="ruby-identifier">moves</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-constant">Move</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">piece</span>, <span class="ruby-identifier">destination</span>, <span class="ruby-keyword kw">false</span>) <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">destination</span>.<span class="ruby-identifier">base?</span>
  26           <span class="ruby-keyword kw">end</span>
  27         <span class="ruby-keyword kw">end</span>
  28         <span class="ruby-comment cmt"># if we can move to our base (but not already on it), add moves via that...</span>
  29         <span class="ruby-keyword kw">if</span> <span class="ruby-ivar">@board</span>.<span class="ruby-identifier">distance_between</span>[<span class="ruby-identifier">piece</span>.<span class="ruby-identifier">position</span>.<span class="ruby-identifier">place</span>][<span class="ruby-identifier">player</span>] <span class="ruby-operator">&lt;=</span> <span class="ruby-identifier">die_result</span> <span class="ruby-keyword kw">and</span>
  30             <span class="ruby-keyword kw">not</span> <span class="ruby-identifier">piece</span>.<span class="ruby-identifier">position</span>.<span class="ruby-identifier">place</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">player</span> <span class="ruby-keyword kw">and</span>
  31             <span class="ruby-keyword kw">not</span> <span class="ruby-identifier">piece</span>.<span class="ruby-identifier">contains</span>.<span class="ruby-identifier">empty?</span>
  32           <span class="ruby-identifier">distance_after_base</span> = <span class="ruby-identifier">die_result</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">board</span>.<span class="ruby-identifier">distance_between</span>[<span class="ruby-identifier">piece</span>.<span class="ruby-identifier">position</span>.<span class="ruby-identifier">place</span>][<span class="ruby-identifier">player</span>]
  33           (<span class="ruby-ivar">@board</span>.<span class="ruby-identifier">valid_moves</span>[<span class="ruby-identifier">player</span>][<span class="ruby-identifier">distance_after_base</span>]).<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">destination</span><span class="ruby-operator">|</span>
  34             <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">destination</span>.<span class="ruby-identifier">safe?</span>
  35               <span class="ruby-keyword kw">if</span> (<span class="ruby-ivar">@pieces</span>.<span class="ruby-identifier">find_all</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">k</span>, <span class="ruby-identifier">p</span><span class="ruby-operator">|</span> <span class="ruby-identifier">p</span>.<span class="ruby-identifier">position</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">destination</span>}).<span class="ruby-identifier">length</span> <span class="ruby-operator">&lt;</span> <span class="ruby-value">3</span>
  36                 <span class="ruby-identifier">moves</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-constant">Move</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">piece</span>, <span class="ruby-identifier">destination</span>, <span class="ruby-keyword kw">true</span>)
  37               <span class="ruby-keyword kw">end</span>
  38             <span class="ruby-keyword kw">else</span>
  39               <span class="ruby-identifier">moves</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-constant">Move</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">piece</span>, <span class="ruby-identifier">destination</span>, <span class="ruby-keyword kw">true</span>)
  40             <span class="ruby-keyword kw">end</span>
  41           <span class="ruby-keyword kw">end</span>
  42         <span class="ruby-keyword kw">end</span>
  43       <span class="ruby-keyword kw">end</span>
  44     <span class="ruby-keyword kw">end</span>
  45     <span class="ruby-identifier">moves</span>
  46   <span class="ruby-keyword kw">end</span></pre>
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