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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">"#{m} scores #{score}
"</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"><=
></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>