Class: BCDice::GameSystem::BattleTech

Inherits:
Base
  • Object
show all
Defined in:
lib/bcdice/game_system/BattleTech.rb

Defined Under Namespace

Classes: HitPart, UnknownXRMError

Constant Summary collapse

ID =

ゲームシステムの識別子

'BattleTech'
NAME =

ゲームシステム名

'バトルテック'
SORT_KEY =

ゲームシステム名の読みがな

'はとるてつく'
HELP_MESSAGE =

ダイスボットの使い方

<<~MESSAGETEXT
  ・判定方法
  　(回数)BT(ダメージ)(部位)+(基本値)>=(目標値)
  　回数は省略時 1固定。
  　部位はC（正面）R（右）、L（左）。省略時はC（正面）固定
  　U（上半身）、L（下半身）を組み合わせ CU/RU/LU/CL/RL/LLも指定可能
  　例）BT3+2>=4
  　　正面からダメージ3の攻撃を技能ベース2目標値4で1回判定
  　例）2BT3RL+5>=8
  　　右下半身にダメージ3の攻撃を技能ベース5目標値8で2回判定
  　ミサイルによるダメージは BT(ダメージ) の代わりに SRM2/4/6, LRM5/10/15/20 を指定
  　例）3SRM6LU+5>=8
  　　左上半身にSRM6連を技能ベース5目標値8で3回判定
    BT(ダメージ) の代わりに PPC を指定するとダメージ10で判定
    例）2PPCR+3>=10
    　右側からPPC（ダメージ10）による攻撃を技能ベース3目標値10で2回判定
  ・CT：致命的命中表
  ・DW：転倒後の向き表
  ・CDx：メック戦士意識維持ロール。ダメージ値x（1〜6）で判定　例）CD3
MESSAGETEXT
NO_CRITICAL_HIT_LIMIT =

致命的命中が発生しない上限値

7
LRM_LIMIT = 
5
TABLES =

表の集合

{
  'CT' => DiceTable::RangeTable.new(
    '致命的命中表',
    '2D6',
    [
      [2..NO_CRITICAL_HIT_LIMIT, '致命的命中はなかった'],
      [8..9,                     '1箇所の致命的命中'],
      [10..11,                   '2箇所の致命的命中'],
      [12,                       'その部位が吹き飛ぶ（腕、脚、頭）または3箇所の致命的命中（胴）'],
    ]
  ),
  'DW' => DiceTable::Table.new(
    '転倒後の向き表',
    '1D6',
    [
      '同じ（前面から転倒） 正面／背面',
      '1ヘクスサイド右（側面から転倒） 右側面',
      '2ヘクスサイド右（側面から転倒） 右側面',
      '180度逆（背面から転倒） 正面／背面',
      '2ヘクスサイド左（側面から転倒） 左側面',
      '1ヘクスサイド左（側面から転倒） 左側面',
    ]
  )
}.freeze
XRM_DAMAGE_TABLES =

ミサイルダメージ表

{
  'SRM2' => DiceTable::RangeTable.new(
    'SRM2ダメージ表',
    '2D6',
    [
      [2..7,  1],
      [8..12, 2],
    ]
  ),
  'SRM4' => DiceTable::RangeTable.new(
    'SRM4ダメージ表',
    '2D6',
    [
      [2,      1],
      [3..6,   2],
      [7..10,  3],
      [11..12, 4],
    ]
  ),
  'SRM6' => DiceTable::RangeTable.new(
    'SRM6ダメージ表',
    '2D6',
    [
      [2..3,   2],
      [4..5,   3],
      [6..8,   4],
      [9..10,  5],
      [11..12, 6],
    ]
  ),
  'LRM5' => DiceTable::RangeTable.new(
    'LRM5ダメージ表',
    '2D6',
    [
      [2,      1],
      [3..4,   2],
      [5..8,   3],
      [9..10,  4],
      [11..12, 5],
    ]
  ),
  'LRM10' => DiceTable::RangeTable.new(
    'LRM10ダメージ表',
    '2D6',
    [
      [2..3,    3],
      [4,       4],
      [5..8,    6],
      [9..10,   8],
      [11..12, 10],
    ]
  ),
  'LRM15' => DiceTable::RangeTable.new(
    'LRM15ダメージ表',
    '2D6',
    [
      [2..3,    5],
      [4,       6],
      [5..8,    9],
      [9..10,  12],
      [11..12, 15],
    ]
  ),
  'LRM20' => DiceTable::RangeTable.new(
    'LRM20ダメージ表',
    '2D6',
    [
      [2..3,    6],
      [4,       9],
      [5..8,   12],
      [9..10,  16],
      [11..12, 20],
    ]
  )
}.freeze

Instance Attribute Summary

Attributes inherited from Base

#d66_sort_type, #default_cmp_op, #default_target_number, #randomizer, #reroll_dice_reroll_threshold, #round_type, #sides_implicit_d, #upper_dice_reroll_threshold

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#change_text, #check_result, command_pattern, #enable_debug, #enabled_d9?, #eval, eval, #grich_text, #initialize, prefixes_pattern, register_prefix, register_prefix_from_super_class, #sort_add_dice?, #sort_barabara_dice?

Methods included from Translate

#translate

Constructor Details

This class inherits a constructor from BCDice::Base

Class Method Details

.ppc_parser ⇒ Command::Parser

Returns PPCコマンドの構文解析器.

Returns:



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# File 'lib/bcdice/game_system/BattleTech.rb', line 48

def self.ppc_parser
  return @ppc_parser if defined?(@ppc_parser) && @ppc_parser

  @ppc_parser = Command::Parser.new(/PPC(?:[LCR][LU]?)?/, round_type: RoundType::FLOOR)
  @ppc_parser.enable_prefix_number
  @ppc_parser.restrict_cmp_op_to(:>=)

  @ppc_parser
end

Instance Method Details

#consciousness_roll(damage) ⇒ Result

メック戦士意識維持ロールを行う

damageが6の場合は死亡。damageが5以下の場合は、2d6の結果が意識維持表の値以上かの成功判定。

Parameters:

  • damage (Integer) —

    メック戦士へのダメージ（1〜6）

Returns:

See Also:

  • A Game of Armored Combat」ルールブックp. 44


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# File 'lib/bcdice/game_system/BattleTech.rb', line 315

def consciousness_roll(damage)
  unless (1..6).include?(damage)
    return nil
  end

  command = "CD#{damage}"

  if damage == 6
    return Result.fumble("#{command} ＞ 死亡")
  end

  consciousness_table = {
    1 => 3,
    2 => 5,
    3 => 7,
    4 => 10,
    5 => 11,
  }

  target = consciousness_table[damage]
  expr = "(2D6>=#{target})"

  values = @randomizer.roll_barabara(2, 6)
  sum = values.sum
  values_str = values.join(",")
  sum_and_values = "#{sum}[#{values_str}]"

  success = sum >= target
  result = success ? "成功" : "失敗"

  parts = [
    command,
    expr,
    sum_and_values,
    sum,
    result,
  ]
  text = parts.join(" ＞ ")

  return success ? Result.success(text) : Result.failure(text)
end

#eval_game_system_specific_command(command) ⇒ Object 



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# File 'lib/bcdice/game_system/BattleTech.rb', line 63

def eval_game_system_specific_command(command)
  result = roll_tables(command, TABLES)
  return result if result

  if (ppc_parse_result = ppc_parser.parse(command))
    return execute_ppc(ppc_parse_result)
  end

  count = 1
  if command =~ /^(\d+)(.+)/
    count = Regexp.last_match(1).to_i
    command = Regexp.last_match(2)
  end

  debug('executeCommandCatched count', count)
  debug('executeCommandCatched command', command)

  case command
  when /\ACD([1-6])\z/
    damage = Regexp.last_match(1).to_i
    return consciousness_roll(damage)
  when /^((S|L)RM\d+)(.+)/
    tail = Regexp.last_match(3)
    type = Regexp.last_match(1)
    damageFunc = lambda { getXrmDamage(type) }
    return getHitResult(count, damageFunc, tail)
  when /^BT(\d+)(.+)/
    debug('BT pattern')
    tail = Regexp.last_match(2)
    damageValue = Regexp.last_match(1).to_i
    damageFunc = lambda { damageValue }
    return getHitResult(count, damageFunc, tail)
  end

  return nil
rescue UnknownXRMError
  return nil
end

#execute_ppc(parse_result) ⇒ Result?

PPCコマンドを実行する

Parameters:

Returns:



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# File 'lib/bcdice/game_system/BattleTech.rb', line 360

def execute_ppc(parse_result)
  count = parse_result.prefix_number || 1

  # getHitResult() の引数tailの形に合わせる
  # TODO: 攻撃を表すクラスに変える

  # "PPC" 以降の部位指定
  side = parse_result.command[3..-1]

  modifier = Format.modifier(parse_result.modify_number)
  target = parse_result.target_number

  tail = "#{side}#{modifier}>=#{target}"

  # ダメージ10固定で命中判定を行う
  return getHitResult(count, lambda { 10 }, tail)
end

#getBaseValue(baseString) ⇒ Object 



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# File 'lib/bcdice/game_system/BattleTech.rb', line 163

def getBaseValue(baseString)
  base = 0
  return base if baseString.nil?

  base = ArithmeticEvaluator.eval(baseString)
  return base
end

#getDamageInfo(dice, damage, isLrm, index) ⇒ Object 



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# File 'lib/bcdice/game_system/BattleTech.rb', line 223

def getDamageInfo(dice, damage, isLrm, index)
  return damage, damage.to_s if dice.nil?
  return damage, "[#{dice}] #{damage}" unless isLrm

  currentDamage = damage - (LRM_LIMIT * index)
  if currentDamage > LRM_LIMIT
    currentDamage = LRM_LIMIT
  end

  return currentDamage, currentDamage.to_s
end

#getDamages(damageFunc, partTable, damages) ⇒ Object

Parameters:

  • damageFunc (Proc) —

    ダメージを返す手続き

  • partTable (RangeTable) —

    命中部位表

  • damages (Hash) —

    蓄積したダメージの情報



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# File 'lib/bcdice/game_system/BattleTech.rb', line 192

def getDamages(damageFunc, partTable, damages)
  resultText = ''
  damage, dice, isLrm = damageFunc.call()

  damagePartCount = 1
  if isLrm
    damagePartCount = (1.0 * damage / LRM_LIMIT).ceil
    resultText += "[#{dice}] #{damage}点"
  end

  damagePartCount.times do |damageIndex|
    currentDamage, damageText = getDamageInfo(dice, damage, isLrm, damageIndex)

    text, part, criticalText = getHitResultOne(damageText, partTable)
    resultText += " " if isLrm
    resultText += text

    if damages[part].nil?
      damages[part] = {
        partDamages: [],
        criticals: [],
      }
    end

    damages[part][:partDamages] << currentDamage
    damages[part][:criticals] << criticalText unless criticalText.empty?
  end

  return damages, resultText
end

#getHitResult(count, damageFunc, tail) ⇒ Object 



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# File 'lib/bcdice/game_system/BattleTech.rb', line 119

def getHitResult(count, damageFunc, tail)
  m = /\A([LCR][LU]?)?(\+\d+)?>=(\d+)/.match(tail)
  return nil unless m

  side = m[1] || 'C'
  baseString = m[2]
  target = m[3].to_i
  base = getBaseValue(baseString)
  debug("side, base, target", side, base, target)

  partTable = HitPart::TABLES[side]

  resultLines = []
  damages = {}
  hitCount = 0

  count.times do
    isHit, hitResult = getHitText(base, target)
    if isHit
      hitCount += 1

      damages, damageText = getDamages(damageFunc, partTable, damages)
      hitResult += damageText
    end
    resultLines << hitResult
  end

  # 命中したか？
  hit = hitCount > 0

  hitCountText = " ＞ #{hitCount}回命中"
  hitDetails =
    if hit
      "#{hitCountText} 命中箇所：#{getTotalDamage(damages)}"
    else
      hitCountText
    end
  resultLines.push(hitDetails)

  resultText = resultLines.join("\n")

  return hit ? Result.success(resultText) : Result.failure(resultText)
end

#getHitResultOne(damage_text, hit_part_table) ⇒ Object

攻撃を1回行い、その結果を返す

Parameters:

  • damage_text (String) —

    ダメージを表す文字列

  • hit_part_table (RangeTable) —

    命中部位表



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# File 'lib/bcdice/game_system/BattleTech.rb', line 276

def getHitResultOne(damage_text, hit_part_table)
  hit_part_roll_result = hit_part_table.roll(@randomizer)
  hit_part = hit_part_roll_result.content

  critical_hit_may_occur_str =
    hit_part.critical_hit_may_occur ? '（致命的命中）' : ''

  result_parts = [
    [
      "[#{hit_part_roll_result.sum}]",
      "#{hit_part.name}#{critical_hit_may_occur_str}",
      "#{damage_text}点",
    ].join(' ')
  ]

  criticalText = ''
  if hit_part.critical_hit_may_occur
    ct_roll_result = TABLES['CT'].roll(@randomizer)

    # 致命的命中が発生したか
    if ct_roll_result.sum > NO_CRITICAL_HIT_LIMIT
      criticalText = ct_roll_result.content
    end

    result_parts.push("[#{ct_roll_result.sum}] #{ct_roll_result.content}")
  end

  # TODO: 構造体で表現する
  return result_parts.join(' ＞ '), hit_part.name, criticalText
end

#getHitText(base, target) ⇒ Object 



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# File 'lib/bcdice/game_system/BattleTech.rb', line 171

def getHitText(base, target)
  dice1 = @randomizer.roll_once(6)
  dice2 = @randomizer.roll_once(6)
  total = dice1 + dice2 + base
  isHit = (total >= target)
  baseString = (base > 0 ? "+#{base}" : "")

  result = "#{total}[#{dice1},#{dice2}#{baseString}]>=#{target} ＞ "

  if isHit
    result += "命中 ＞ "
  else
    result += "外れ"
  end

  return isHit, result
end

#getTotalDamage(damages) ⇒ Object 



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# File 'lib/bcdice/game_system/BattleTech.rb', line 235

def getTotalDamage(damages)
  parts = ['頭',
           '胴中央',
           '右胴',
           '左胴',
           '右脚',
           '左脚',
           '右腕',
           '左腕',]

  allDamage = 0
  damageTexts = []
  parts.each do |part|
    damageInfo = damages.delete(part)
    next if  damageInfo.nil?

    damage = damageInfo[:partDamages].inject(0) { |sum, i| sum + i }
    allDamage += damage
    damageCount = damageInfo[:partDamages].size
    criticals = damageInfo[:criticals]

    text = ""
    text += "#{part}(#{damageCount}回) #{damage}点"
    text += " #{criticals.join(' ')}" unless criticals.empty?

    damageTexts << text
  end

  unless damages.empty?
    raise "damages rest!! #{damages.inspect()}"
  end

  result = damageTexts.join(" ／ ")
  result += " ＞ 合計ダメージ #{allDamage}点"

  return result
end

#getXrmDamage(type) ⇒ Object

Raises:



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# File 'lib/bcdice/game_system/BattleTech.rb', line 104

def getXrmDamage(type)
  raise UnknownXRMError, "unknown XRM: #{type}" unless XRM_DAMAGE_TABLES.key?(type)

  table = XRM_DAMAGE_TABLES[type]
  roll_result = table.roll(@randomizer)

  lrm = type.start_with?('L')
  damage = roll_result.content
  modified_damage = lrm ? damage : (2 * damage)

  return modified_damage, roll_result.sum, lrm
end

#ppc_parser ⇒ Command::Parser

Returns PPCコマンドの構文解析器.

Returns:



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# File 'lib/bcdice/game_system/BattleTech.rb', line 59

def ppc_parser
  self.class.ppc_parser
end