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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 448</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"><</span> <span class="ruby-value">3</span>
22 <span class="ruby-identifier">moves</span> <span class="ruby-operator"><<</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"><<</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"><=</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"><</span> <span class="ruby-value">3</span>
36 <span class="ruby-identifier">moves</span> <span class="ruby-operator"><<</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"><<</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>