強羅で温泉に浸かりながらカードゲームのルールエンジンについて考えてみた

http://regional.rubykaigi.org/oedo05/

Transcript

1. ڧཏͰԹઘʹਁ͔Γͳ͕ΒΧʔυήʔϜͷϧʔϧΤϯδϯʹ͍ͭͯ ߟ͑ͯΈͨ @youchan
2. ୭ʁ • େ࡚ ᘯ(Α͏) • גࣜձࣾϢϏϨδ • Meta programming love
5. ͳͥڧཏʁ ։ൃ߹॓ʹߦ͖ͬͯ·ͨ͠ɻ
7. ϩϚϯεΧʔ
8. େ෋߽ • େ෋߽ͱ͍͏τϥϯϓήʔϜΛ͝ଘ஌Ͱ͔͢ʁ • ϝϯόʔʹେ෋߽Λ஌Βͳ͍ਓ͕͍͚ͨͲઆ໌͙ͯ࢝͢͠ΊΒ ΕΔ͘Β͍γϯϓϧͳϧʔϧ • ϩʔΧϧϧʔϧ͕ͨ͘͞Μ͋Δ • –̏ > δϣʔΧʔ • ֊ஈ • 11όοΫ • ֵ໋
9. χϜτ
10. ϫΠϯόϧͰχϜτͰ༡Μ ͰౖΒΕΔ • ҿ৯ళͰΧʔυήʔϜΛ΍ΔͱౖΒΕΔ • ΧʔυήʔϜ͸γϯϓϧͰ໘ന͍ • ͳΜͱͳ͘ΧʔυήʔϜͷϓϩάϥϜϞ σϧ͕Ͱ͖ͦ͏ͳؾ͕͖ͯͨ͠
11. ήʔϜͷঢ়ଶ
12. ήʔϜͷঢ়ଶ͕ࠁʑͱมԽ
13. ঢ়ଶͱϧʔϧ(+ ϓϨΠϠʔ)
14. ՝୊͕Θ͔ͬͨ • ঢ়ଶͱঢ়ଶΛมԽͤ͞Δϧʔϧ • UIΛఏڙ͢Δ
15. RubyͷDSL͸ϧʔϧهड़ʹ͏͚ͬͯͭ
16. ·ͣ͸େ෋߽Ͱͭͬͯ͘ΈΔ
17. ঢ়ଶ • ঢ়ଶͱͯ͠ଊ͑Δ͜ͱͷͰ͖Δ΋ͷ͸͢΂ͯঢ়ଶͱͯ͠هड़ • ৔ࡳɺϢʔβʔຖͷखࡳͳͲΧʔυͷঢ়ଶ • Ϣʔβʔͷॱ൪ɺύεΛ͔ͨ͠ͳͲ
18. ঢ়ଶͷDSL state :tableau, :cards, :any state :used, :cards, :any state :turns, :players
19. ϓϨΠϠʔ͝ͱͷঢ়ଶ player do state :hand, :cards, :any state :choice, :cards, 1..4 state :up, :number state :pass, :flag, 1, false end
20. ϧʔϧ • ϧʔϧ͸ঢ়ଶΛผͷঢ়ଶʹભҠͤ͞Δ΋ͷ
21. ϧʔϧͷDSL rule(:put_player_choice_on_tableau) do |player| used << tableau self.tableau = player.choice.value end rule(:turn_break?) do |player| players.except(player).all? {|p| p.pass.value } end rule(:last_one_player?) do players.select(&:is_up?).count == (players.count - 1) end
22. όϦσʔγϣϯϧʔϧ rule(:validate_choice) do |cards| same_number_of cards next true if tableau.empty? same_count_of cards greater_than cards true end rule(:same_number_of) do |cards| validate_error cards if cards.count > 1 && cards.any? {|c| cards[0].number != c.number } end rule(:same_count_of) do |cards| validate_error cards unless tableau.count == cards.count end
23. ਐߦ • ͍ͭϧʔϧ͕ద༻͞ΕΔ͔ • ϢʔβʔͱͷΠϯλϥΫγϣϯ
24. progression progression do deck.shuffle ... turns.cycle do |player| next if player.is_up? if turn_break?(player) clear_tableau end_of_game if last_one_player? end player.choose_from_hand notify :player_choosed, player put_player_choice_on_tableau(player) end end
25. ϢʔβʔΠϯλʔϑΣʔε • ࠓճ͸Slack
26. Πϕϯτۦಈ • Ruleͷద༻લޙ • Stateͷߋ৽ • όϦσʔγϣϯΤϥʔ • ͦͷଞ໌ࣔతʹnotify
27. Ruleͷద༻લޙ after_rule :turn_break? do |params| if params[:result] @slack_user.puts "All other player passed. This turn is break." end end
28. Demo or Die
29. ల๬ • େ޷͖ͳຑ੃ήʔϜΛ࡞Γ͍ͨ • WebΠϯλϑΣʔε
30. RubyKaigi 2015
31. ·ͱΊ • Թઘʹਁ͔Γͳ͕ΒͰ͸ͳ͘ɺԹઘͷؼΓͷಓதʹߟ͑·ͨ͠ɻ • ҿ৯ళͰΧʔυήʔϜͩΊʂઈରʂ • ΧʔυήʔϜ͸ঢ়ଶͱϧʔϧͦͯ͠UI • Web UI ͸RubyKaigiʹͯࢩ͏͝ظ଴ʂ
32. https://github.com/youchan/gohra ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
33. ͓·͚ ΞϧΰϦζϜ + σʔλߏ଄ = ϓϩάϥϜ ঢ়ଶ ϧʔϧ