[NanimonaiMura]なにもない村の追加 (#867)

* [NanimonaiMura]なにもない村の追加

* [NanimonaiMura] Fix RuboCop Style/WordArray

Author: mrrlll

lib/bcdice/game_system.rb

@@ -183,6 +183,7 @@
 require "bcdice/game_system/MonotoneMuseum"
 require "bcdice/game_system/MonotoneMuseum_Korean"
 require "bcdice/game_system/MorkBorg"
+require "bcdice/game_system/NanimonaiMura"
 require "bcdice/game_system/Nechronica"
 require "bcdice/game_system/Nechronica_Korean"
 require "bcdice/game_system/NegikureNegimaki"

lib/bcdice/game_system/NanimonaiMura.rb

@@ -0,0 +1,112 @@
+# frozen_string_literal: true
+
+module BCDice
+  module GameSystem
+    class NanimonaiMura < Base
+      # ゲームシステムの識別子
+      ID = "NanimonaiMura"
+
+      # ゲームシステム名
+      NAME = "なにもない村"
+
+      # ゲームシステム名の読みがな
+      SORT_KEY = "なにもないむら"
+
+      # ダイスボットの使い方
+      HELP_MESSAGE = <<~INFO_MESSAGE_TEXT
+        ・行為判定 xNMy
+        　x個のD10を振り、2つの出目から達成値を作成して判定します。
+        　達成値は成功度が最も高くなる組み合わせを自動選択し、同値なら低い値を優先します。
+        　x: ダイス数（1以上）
+        　y: 判定値（0以上）
+        　例）4NM55 6NM199 2NM35
+      INFO_MESSAGE_TEXT
+
+      register_prefix('\d+NM\d+')
+
+      ResultData = Struct.new(:score, :success, :critical, :result_text, :success_level)
+
+      STAGE_NAMES = ['ノーマル', 'エピック', 'レジェンダリ', 'ミシック'].freeze
+      BASE_SUCCESS_LEVELS = [1, 11, 21, 31].freeze
+
+      def eval_game_system_specific_command(command)
+        roll_action(command)
+      end
+
+      private
+
+      def roll_action(command)
+        m = /\A(\d+)NM(\d+)\z/.match(command)
+        return nil unless m
+
+        dice_count = m[1].to_i
+        target = m[2].to_i
+        return nil if dice_count < 1
+
+        dice_list = @randomizer.roll_barabara(dice_count, 10).map { |value| normalize_d10(value) }
+        result = select_best_result(dice_list, target)
+
+        Result.new.tap do |r|
+          r.text = "#{command} (#{dice_count}D10) ＞ [#{dice_list.join(',')}] ＞ #{result.score} ＞ #{result.result_text} ＞ 成功度#{result.success_level}"
+          r.condition = result.success
+          r.critical = result.critical
+        end
+      end
+
+      def normalize_d10(value)
+        value == 10 ? 0 : value
+      end
+
+      def select_best_result(dice_list, target)
+        candidates =
+          if dice_list.size == 1
+            [build_result(dice_list.first * 10, target)]
+          else
+            [].tap do |results|
+              dice_list.each_index do |i|
+                dice_list.each_index do |j|
+                  next if i == j
+
+                  results << build_result(dice_list[i] * 10 + dice_list[j], target)
+                end
+              end
+            end
+          end
+
+        best_result = candidates.first
+
+        candidates.drop(1).each do |candidate|
+          next if candidate.success_level < best_result.success_level
+          next if candidate.success_level == best_result.success_level && candidate.score > best_result.score
+
+          best_result = candidate
+        end
+
+        best_result
+      end
+
+      def build_result(score, target)
+        if score > target
+          return ResultData.new(score, false, false, "失敗", 0)
+        end
+
+        diff = target - score
+        stage_index = [diff.div(100), STAGE_NAMES.size - 1].min
+        critical_bonus = zoro_bonus(score)
+        critical = !critical_bonus.nil?
+        success_level = BASE_SUCCESS_LEVELS[stage_index] + (critical_bonus || 0)
+        result_text = "#{STAGE_NAMES[stage_index]}#{critical ? '大成功' : '成功'}"
+
+        ResultData.new(score, true, critical, result_text, success_level)
+      end
+
+      def zoro_bonus(score)
+        tens = score.div(10)
+        ones = score % 10
+        return nil unless tens == ones
+
+        ones
+      end
+    end
+  end
+end

test/data/NanimonaiMura.toml

@@ -0,0 +1,95 @@
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "4NM55"
+output = "4NM55 (4D10) ＞ [3,0,6,9] ＞ 3 ＞ ノーマル成功 ＞ 成功度1"
+success = true
+rands = [
+  { sides = 10, value = 3 },
+  { sides = 10, value = 10 },
+  { sides = 10, value = 6 },
+  { sides = 10, value = 9 },
+]
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "6NM199"
+output = "6NM199 (6D10) ＞ [0,6,1,1,5,5] ＞ 55 ＞ エピック大成功 ＞ 成功度16"
+success = true
+critical = true
+rands = [
+  { sides = 10, value = 10 },
+  { sides = 10, value = 6 },
+  { sides = 10, value = 1 },
+  { sides = 10, value = 1 },
+  { sides = 10, value = 5 },
+  { sides = 10, value = 5 },
+]
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "2NM33"
+output = "2NM33 (2D10) ＞ [5,7] ＞ 57 ＞ 失敗 ＞ 成功度0"
+failure = true
+rands = [
+  { sides = 10, value = 5 },
+  { sides = 10, value = 7 },
+]
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "1NM35"
+output = "1NM35 (1D10) ＞ [3] ＞ 30 ＞ ノーマル成功 ＞ 成功度1"
+success = true
+rands = [
+  { sides = 10, value = 3 },
+]
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "2NM50"
+output = "2NM50 (2D10) ＞ [0,0] ＞ 0 ＞ ノーマル大成功 ＞ 成功度1"
+success = true
+critical = true
+rands = [
+  { sides = 10, value = 10 },
+  { sides = 10, value = 10 },
+]
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "3NM156"
+output = "3NM156 (3D10) ＞ [4,5,6] ＞ 45 ＞ エピック成功 ＞ 成功度11"
+success = true
+rands = [
+  { sides = 10, value = 4 },
+  { sides = 10, value = 5 },
+  { sides = 10, value = 6 },
+]
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "2NM30"
+output = "2NM30 (2D10) ＞ [4,4] ＞ 44 ＞ 失敗 ＞ 成功度0"
+failure = true
+rands = [
+  { sides = 10, value = 4 },
+  { sides = 10, value = 4 },
+]
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "0NM55"
+output = ""
+rands = []
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "NM55"
+output = ""
+rands = []
+
+[[ test ]]
+game_system = "NanimonaiMura"
+input = "4NM"
+output = ""
+rands = []