Initial import

2014-04-23 21:59:50 -07:00
commit 2eff2aa3b9
141 changed files with 20827 additions and 0 deletions
--- a/Scripts/RPG/Game_BattlerBase.rb
+++ b/Scripts/RPG/Game_BattlerBase.rb
@@ -0,0 +1,732 @@
+# -*- coding: utf-8 -*-
+#==============================================================================
+# ** Game_BattlerBase
+#------------------------------------------------------------------------------
+#  This base class handles battlers. It mainly contains methods for calculating
+# parameters. It is used as a super class of the Game_Battler class.
+#==============================================================================
+
+class Game_BattlerBase
+  #--------------------------------------------------------------------------
+  # * Constants (Features)
+  #--------------------------------------------------------------------------
+  FEATURE_ELEMENT_RATE  = 11              # Element Rate
+  FEATURE_DEBUFF_RATE   = 12              # Debuff Rate
+  FEATURE_STATE_RATE    = 13              # State Rate
+  FEATURE_STATE_RESIST  = 14              # State Resist
+  FEATURE_PARAM         = 21              # Parameter
+  FEATURE_XPARAM        = 22              # Ex-Parameter
+  FEATURE_SPARAM        = 23              # Sp-Parameter
+  FEATURE_ATK_ELEMENT   = 31              # Atk Element
+  FEATURE_ATK_STATE     = 32              # Atk State
+  FEATURE_ATK_SPEED     = 33              # Atk Speed
+  FEATURE_ATK_TIMES     = 34              # Atk Times+
+  FEATURE_STYPE_ADD     = 41              # Add Skill Type
+  FEATURE_STYPE_SEAL    = 42              # Disable Skill Type
+  FEATURE_SKILL_ADD     = 43              # Add Skill
+  FEATURE_SKILL_SEAL    = 44              # Disable Skill
+  FEATURE_EQUIP_WTYPE   = 51              # Equip Weapon
+  FEATURE_EQUIP_ATYPE   = 52              # Equip Armor
+  FEATURE_EQUIP_FIX     = 53              # Lock Equip
+  FEATURE_EQUIP_SEAL    = 54              # Seal Equip
+  FEATURE_SLOT_TYPE     = 55              # Slot Type
+  FEATURE_ACTION_PLUS   = 61              # Action Times+
+  FEATURE_SPECIAL_FLAG  = 62              # Special Flag
+  FEATURE_COLLAPSE_TYPE = 63              # Collapse Effect
+  FEATURE_PARTY_ABILITY = 64              # Party Ability
+  #--------------------------------------------------------------------------
+  # * Constants (Feature Flags)
+  #--------------------------------------------------------------------------
+  FLAG_ID_AUTO_BATTLE   = 0               # auto battle
+  FLAG_ID_GUARD         = 1               # guard
+  FLAG_ID_SUBSTITUTE    = 2               # substitute
+  FLAG_ID_PRESERVE_TP   = 3               # preserve TP
+  #--------------------------------------------------------------------------
+  # * Constants (Starting Number of Buff/Debuff Icons)
+  #--------------------------------------------------------------------------
+  ICON_BUFF_START       = 64              # buff (16 icons)
+  ICON_DEBUFF_START     = 80              # debuff (16 icons)
+  #--------------------------------------------------------------------------
+  # * Public Instance Variables
+  #--------------------------------------------------------------------------
+  attr_reader   :hp                       # HP
+  attr_reader   :mp                       # MP
+  attr_reader   :tp                       # TP
+  #--------------------------------------------------------------------------
+  # * Access Method by Parameter Abbreviations
+  #--------------------------------------------------------------------------
+  def mhp;  param(0);   end               # MHP  Maximum Hit Points
+  def mmp;  param(1);   end               # MMP  Maximum Magic Points
+  def atk;  param(2);   end               # ATK  ATtacK power
+  def def;  param(3);   end               # DEF  DEFense power
+  def mat;  param(4);   end               # MAT  Magic ATtack power
+  def mdf;  param(5);   end               # MDF  Magic DeFense power
+  def agi;  param(6);   end               # AGI  AGIlity
+  def luk;  param(7);   end               # LUK  LUcK
+  def hit;  xparam(0);  end               # HIT  HIT rate
+  def eva;  xparam(1);  end               # EVA  EVAsion rate
+  def cri;  xparam(2);  end               # CRI  CRItical rate
+  def cev;  xparam(3);  end               # CEV  Critical EVasion rate
+  def mev;  xparam(4);  end               # MEV  Magic EVasion rate
+  def mrf;  xparam(5);  end               # MRF  Magic ReFlection rate
+  def cnt;  xparam(6);  end               # CNT  CouNTer attack rate
+  def hrg;  xparam(7);  end               # HRG  Hp ReGeneration rate
+  def mrg;  xparam(8);  end               # MRG  Mp ReGeneration rate
+  def trg;  xparam(9);  end               # TRG  Tp ReGeneration rate
+  def tgr;  sparam(0);  end               # TGR  TarGet Rate
+  def grd;  sparam(1);  end               # GRD  GuaRD effect rate
+  def rec;  sparam(2);  end               # REC  RECovery effect rate
+  def pha;  sparam(3);  end               # PHA  PHArmacology
+  def mcr;  sparam(4);  end               # MCR  Mp Cost Rate
+  def tcr;  sparam(5);  end               # TCR  Tp Charge Rate
+  def pdr;  sparam(6);  end               # PDR  Physical Damage Rate
+  def mdr;  sparam(7);  end               # MDR  Magical Damage Rate
+  def fdr;  sparam(8);  end               # FDR  Floor Damage Rate
+  def exr;  sparam(9);  end               # EXR  EXperience Rate
+  #--------------------------------------------------------------------------
+  # * Object Initialization
+  #--------------------------------------------------------------------------
+  def initialize
+    @hp = @mp = @tp = 0
+    @hidden = false
+    clear_param_plus
+    clear_states
+    clear_buffs
+  end
+  #--------------------------------------------------------------------------
+  # * Clear Values Added to Parameter
+  #--------------------------------------------------------------------------
+  def clear_param_plus
+    @param_plus = [0] * 8
+  end
+  #--------------------------------------------------------------------------
+  # * Clear State Information
+  #--------------------------------------------------------------------------
+  def clear_states
+    @states = []
+    @state_turns = {}
+    @state_steps = {}
+  end
+  #--------------------------------------------------------------------------
+  # * Erase States
+  #--------------------------------------------------------------------------
+  def erase_state(state_id)
+    @states.delete(state_id)
+    @state_turns.delete(state_id)
+    @state_steps.delete(state_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Clear Buff Information
+  #--------------------------------------------------------------------------
+  def clear_buffs
+    @buffs = Array.new(8) { 0 }
+    @buff_turns = {}
+  end
+  #--------------------------------------------------------------------------
+  # * Check State
+  #--------------------------------------------------------------------------
+  def state?(state_id)
+    @states.include?(state_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Check K.O. State
+  #--------------------------------------------------------------------------
+  def death_state?
+    state?(death_state_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get State ID of K.O.
+  #--------------------------------------------------------------------------
+  def death_state_id
+    return 1
+  end
+  #--------------------------------------------------------------------------
+  # * Get Current States as an Object Array
+  #--------------------------------------------------------------------------
+  def states
+    @states.collect {|id| $data_states[id] }
+  end
+  #--------------------------------------------------------------------------
+  # * Get Current States as an Array of Icon Numbers
+  #--------------------------------------------------------------------------
+  def state_icons
+    icons = states.collect {|state| state.icon_index }
+    icons.delete(0)
+    icons
+  end
+  #--------------------------------------------------------------------------
+  # * Get Current Buffs/Debuffs as an Array of Icon Numbers
+  #--------------------------------------------------------------------------
+  def buff_icons
+    icons = []
+    @buffs.each_with_index {|lv, i| icons.push(buff_icon_index(lv, i)) }
+    icons.delete(0)
+    icons
+  end
+  #--------------------------------------------------------------------------
+  # * Get Icon Number Corresponding to Buff/Debuff
+  #--------------------------------------------------------------------------
+  def buff_icon_index(buff_level, param_id)
+    if buff_level > 0
+      return ICON_BUFF_START + (buff_level - 1) * 8 + param_id
+    elsif buff_level < 0
+      return ICON_DEBUFF_START + (-buff_level - 1) * 8 + param_id 
+    else
+      return 0
+    end
+  end
+  #--------------------------------------------------------------------------
+  # * Get Array of All Objects Retaining Features
+  #--------------------------------------------------------------------------
+  def feature_objects
+    states
+  end
+  #--------------------------------------------------------------------------
+  # * Get Array of All Feature Objects
+  #--------------------------------------------------------------------------
+  def all_features
+    feature_objects.inject([]) {|r, obj| r + obj.features }
+  end
+  #--------------------------------------------------------------------------
+  # * Get Feature Object Array (Feature Codes Limited)
+  #--------------------------------------------------------------------------
+  def features(code)
+    all_features.select {|ft| ft.code == code }
+  end
+  #--------------------------------------------------------------------------
+  # * Get Feature Object Array (Feature Codes and Data IDs Limited)
+  #--------------------------------------------------------------------------
+  def features_with_id(code, id)
+    all_features.select {|ft| ft.code == code && ft.data_id == id }
+  end
+  #--------------------------------------------------------------------------
+  # * Calculate Complement of Feature Values
+  #--------------------------------------------------------------------------
+  def features_pi(code, id)
+    features_with_id(code, id).inject(1.0) {|r, ft| r *= ft.value }
+  end
+  #--------------------------------------------------------------------------
+  # * Calculate Sum of Feature Values (Specify Data ID)
+  #--------------------------------------------------------------------------
+  def features_sum(code, id)
+    features_with_id(code, id).inject(0.0) {|r, ft| r += ft.value }
+  end
+  #--------------------------------------------------------------------------
+  # * Calculate Sum of Feature Values (Data ID Unspecified)
+  #--------------------------------------------------------------------------
+  def features_sum_all(code)
+    features(code).inject(0.0) {|r, ft| r += ft.value }
+  end
+  #--------------------------------------------------------------------------
+  # * Calculate Set Sum of Features
+  #--------------------------------------------------------------------------
+  def features_set(code)
+    features(code).inject([]) {|r, ft| r |= [ft.data_id] }
+  end
+  #--------------------------------------------------------------------------
+  # * Get Base Value of Parameter
+  #--------------------------------------------------------------------------
+  def param_base(param_id)
+    return 0
+  end
+  #--------------------------------------------------------------------------
+  # * Get Added Value of Parameter
+  #--------------------------------------------------------------------------
+  def param_plus(param_id)
+    @param_plus[param_id]
+  end
+  #--------------------------------------------------------------------------
+  # * Get Reduced Value of Parameter
+  #--------------------------------------------------------------------------
+  def param_min(param_id)
+    return 0 if param_id == 1  # MMP
+    return 1
+  end
+  #--------------------------------------------------------------------------
+  # * Get Maximum Value of Parameter
+  #--------------------------------------------------------------------------
+  def param_max(param_id)
+    return 999999 if param_id == 0  # MHP
+    return 9999   if param_id == 1  # MMP
+    return 999
+  end
+  #--------------------------------------------------------------------------
+  # * Get Rate of Parameter Change
+  #--------------------------------------------------------------------------
+  def param_rate(param_id)
+    features_pi(FEATURE_PARAM, param_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Rate of Change Due to Parameter Buff/Debuff
+  #--------------------------------------------------------------------------
+  def param_buff_rate(param_id)
+    @buffs[param_id] * 0.25 + 1.0
+  end
+  #--------------------------------------------------------------------------
+  # * Get Parameter
+  #--------------------------------------------------------------------------
+  def param(param_id)
+    value = param_base(param_id) + param_plus(param_id)
+    value *= param_rate(param_id) * param_buff_rate(param_id)
+    [[value, param_max(param_id)].min, param_min(param_id)].max.to_i
+  end
+  #--------------------------------------------------------------------------
+  # * Get Ex-Parameter
+  #--------------------------------------------------------------------------
+  def xparam(xparam_id)
+    features_sum(FEATURE_XPARAM, xparam_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Sp-Parameter
+  #--------------------------------------------------------------------------
+  def sparam(sparam_id)
+    features_pi(FEATURE_SPARAM, sparam_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Element Rate
+  #--------------------------------------------------------------------------
+  def element_rate(element_id)
+    features_pi(FEATURE_ELEMENT_RATE, element_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Debuff Rate
+  #--------------------------------------------------------------------------
+  def debuff_rate(param_id)
+    features_pi(FEATURE_DEBUFF_RATE, param_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get State Rate
+  #--------------------------------------------------------------------------
+  def state_rate(state_id)
+    features_pi(FEATURE_STATE_RATE, state_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Array of States to Resist
+  #--------------------------------------------------------------------------
+  def state_resist_set
+    features_set(FEATURE_STATE_RESIST)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if State Is Resisted
+  #--------------------------------------------------------------------------
+  def state_resist?(state_id)
+    state_resist_set.include?(state_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Attack Element
+  #--------------------------------------------------------------------------
+  def atk_elements
+    features_set(FEATURE_ATK_ELEMENT)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Attack State
+  #--------------------------------------------------------------------------
+  def atk_states
+    features_set(FEATURE_ATK_STATE)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Attack State Invocation Rate
+  #--------------------------------------------------------------------------
+  def atk_states_rate(state_id)
+    features_sum(FEATURE_ATK_STATE, state_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Attack Speed
+  #--------------------------------------------------------------------------
+  def atk_speed
+    features_sum_all(FEATURE_ATK_SPEED)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Additional Attack Times
+  #--------------------------------------------------------------------------
+  def atk_times_add
+    [features_sum_all(FEATURE_ATK_TIMES), 0].max
+  end
+  #--------------------------------------------------------------------------
+  # * Get Added Skill Types
+  #--------------------------------------------------------------------------
+  def added_skill_types
+    features_set(FEATURE_STYPE_ADD)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Skill Type Is Disabled
+  #--------------------------------------------------------------------------
+  def skill_type_sealed?(stype_id)
+    features_set(FEATURE_STYPE_SEAL).include?(stype_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Added Skills
+  #--------------------------------------------------------------------------
+  def added_skills
+    features_set(FEATURE_SKILL_ADD)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Skill Is Disabled
+  #--------------------------------------------------------------------------
+  def skill_sealed?(skill_id)
+    features_set(FEATURE_SKILL_SEAL).include?(skill_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Weapon Can Be Equipped
+  #--------------------------------------------------------------------------
+  def equip_wtype_ok?(wtype_id)
+    features_set(FEATURE_EQUIP_WTYPE).include?(wtype_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Armor Can Be Equipped
+  #--------------------------------------------------------------------------
+  def equip_atype_ok?(atype_id)
+    features_set(FEATURE_EQUIP_ATYPE).include?(atype_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Equipment Is Locked
+  #--------------------------------------------------------------------------
+  def equip_type_fixed?(etype_id)
+    features_set(FEATURE_EQUIP_FIX).include?(etype_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Equipment Is Sealed
+  #--------------------------------------------------------------------------
+  def equip_type_sealed?(etype_id)
+    features_set(FEATURE_EQUIP_SEAL).include?(etype_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Get Slot Type
+  #--------------------------------------------------------------------------
+  def slot_type
+    features_set(FEATURE_SLOT_TYPE).max || 0
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Dual Wield
+  #--------------------------------------------------------------------------
+  def dual_wield?
+    slot_type == 1
+  end
+  #--------------------------------------------------------------------------
+  # * Get Array of Additional Action Time Probabilities
+  #--------------------------------------------------------------------------
+  def action_plus_set
+    features(FEATURE_ACTION_PLUS).collect {|ft| ft.value }
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Special Flag
+  #--------------------------------------------------------------------------
+  def special_flag(flag_id)
+    features(FEATURE_SPECIAL_FLAG).any? {|ft| ft.data_id == flag_id }
+  end
+  #--------------------------------------------------------------------------
+  # * Get Collapse Effect
+  #--------------------------------------------------------------------------
+  def collapse_type
+    features_set(FEATURE_COLLAPSE_TYPE).max || 0
+  end
+  #--------------------------------------------------------------------------
+  # * Determine Party Ability
+  #--------------------------------------------------------------------------
+  def party_ability(ability_id)
+    features(FEATURE_PARTY_ABILITY).any? {|ft| ft.data_id == ability_id }
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Auto Battle
+  #--------------------------------------------------------------------------
+  def auto_battle?
+    special_flag(FLAG_ID_AUTO_BATTLE)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Guard
+  #--------------------------------------------------------------------------
+  def guard?
+    special_flag(FLAG_ID_GUARD) && movable?
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Substitute
+  #--------------------------------------------------------------------------
+  def substitute?
+    special_flag(FLAG_ID_SUBSTITUTE) && movable?
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Preserve TP
+  #--------------------------------------------------------------------------
+  def preserve_tp?
+    special_flag(FLAG_ID_PRESERVE_TP)
+  end
+  #--------------------------------------------------------------------------
+  # * Increase Parameter
+  #--------------------------------------------------------------------------
+  def add_param(param_id, value)
+    @param_plus[param_id] += value
+    refresh
+  end
+  #--------------------------------------------------------------------------
+  # * Change HP
+  #--------------------------------------------------------------------------
+  def hp=(hp)
+    @hp = hp
+    refresh
+  end
+  #--------------------------------------------------------------------------
+  # * Change MP
+  #--------------------------------------------------------------------------
+  def mp=(mp)
+    @mp = mp
+    refresh
+  end
+  #--------------------------------------------------------------------------
+  # * Change HP (for Events)
+  #     value:         Amount of increase/decrease
+  #     enable_death:  Allow knockout
+  #--------------------------------------------------------------------------
+  def change_hp(value, enable_death)
+    if !enable_death && @hp + value <= 0
+      self.hp = 1
+    else
+      self.hp += value
+    end
+  end
+  #--------------------------------------------------------------------------
+  # * Change TP
+  #--------------------------------------------------------------------------
+  def tp=(tp)
+    @tp = [[tp, max_tp].min, 0].max
+  end
+  #--------------------------------------------------------------------------
+  # * Get Maximum Value of TP
+  #--------------------------------------------------------------------------
+  def max_tp
+    return 100
+  end
+  #--------------------------------------------------------------------------
+  # * Refresh
+  #--------------------------------------------------------------------------
+  def refresh
+    state_resist_set.each {|state_id| erase_state(state_id) }
+    @hp = [[@hp, mhp].min, 0].max
+    @mp = [[@mp, mmp].min, 0].max
+    @hp == 0 ? add_state(death_state_id) : remove_state(death_state_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Recover All
+  #--------------------------------------------------------------------------
+  def recover_all
+    clear_states
+    @hp = mhp
+    @mp = mmp
+  end
+  #--------------------------------------------------------------------------
+  # * Get Percentage of HP
+  #--------------------------------------------------------------------------
+  def hp_rate
+    @hp.to_f / mhp
+  end
+  #--------------------------------------------------------------------------
+  # * Get Percentage of MP
+  #--------------------------------------------------------------------------
+  def mp_rate
+    mmp > 0 ? @mp.to_f / mmp : 0
+  end
+  #--------------------------------------------------------------------------
+  # * Get Percentage of TP
+  #--------------------------------------------------------------------------
+  def tp_rate
+    @tp.to_f / 100
+  end
+  #--------------------------------------------------------------------------
+  # * Hide
+  #--------------------------------------------------------------------------
+  def hide
+    @hidden = true
+  end
+  #--------------------------------------------------------------------------
+  # * Appear
+  #--------------------------------------------------------------------------
+  def appear
+    @hidden = false
+  end
+  #--------------------------------------------------------------------------
+  # * Get Hide State
+  #--------------------------------------------------------------------------
+  def hidden?
+    @hidden
+  end
+  #--------------------------------------------------------------------------
+  # * Determine Existence
+  #--------------------------------------------------------------------------
+  def exist?
+    !hidden?
+  end
+  #--------------------------------------------------------------------------
+  # * Determine Incapacitation
+  #--------------------------------------------------------------------------
+  def dead?
+    exist? && death_state?
+  end
+  #--------------------------------------------------------------------------
+  # * Determine Survival
+  #--------------------------------------------------------------------------
+  def alive?
+    exist? && !death_state?
+  end
+  #--------------------------------------------------------------------------
+  # * Determine Normality
+  #--------------------------------------------------------------------------
+  def normal?
+    exist? && restriction == 0
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Command is Inputable
+  #--------------------------------------------------------------------------
+  def inputable?
+    normal? && !auto_battle?
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Action is Possible
+  #--------------------------------------------------------------------------
+  def movable?
+    exist? && restriction < 4
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Character is Confused
+  #--------------------------------------------------------------------------
+  def confusion?
+    exist? && restriction >= 1 && restriction <= 3
+  end
+  #--------------------------------------------------------------------------
+  # * Get Confusion Level
+  #--------------------------------------------------------------------------
+  def confusion_level
+    confusion? ? restriction : 0
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Actor or Not
+  #--------------------------------------------------------------------------
+  def actor?
+    return false
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Enemy
+  #--------------------------------------------------------------------------
+  def enemy?
+    return false
+  end
+  #--------------------------------------------------------------------------
+  # * Sorting States
+  #    Sort the content of the @states array, with higher priority states
+  #    coming first.
+  #--------------------------------------------------------------------------
+  def sort_states
+    @states = @states.sort_by {|id| [-$data_states[id].priority, id] }
+  end
+  #--------------------------------------------------------------------------
+  # * Get Restriction
+  #    Get the largest restriction from the currently added states.
+  #--------------------------------------------------------------------------
+  def restriction
+    states.collect {|state| state.restriction }.push(0).max
+  end
+  #--------------------------------------------------------------------------
+  # * Get Most Important State Continuation Message
+  #--------------------------------------------------------------------------
+  def most_important_state_text
+    states.each {|state| return state.message3 unless state.message3.empty? }
+    return ""
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Skill-Required Weapon Is Equipped
+  #--------------------------------------------------------------------------
+  def skill_wtype_ok?(skill)
+    return true
+  end
+  #--------------------------------------------------------------------------
+  # * Calculate Skill's MP Cost
+  #--------------------------------------------------------------------------
+  def skill_mp_cost(skill)
+    (skill.mp_cost * mcr).to_i
+  end
+  #--------------------------------------------------------------------------
+  # * Calculate Skill's TP Cost
+  #--------------------------------------------------------------------------
+  def skill_tp_cost(skill)
+    skill.tp_cost
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Cost of Using Skill Can Be Paid
+  #--------------------------------------------------------------------------
+  def skill_cost_payable?(skill)
+    tp >= skill_tp_cost(skill) && mp >= skill_mp_cost(skill)
+  end
+  #--------------------------------------------------------------------------
+  # * Pay Cost of Using Skill
+  #--------------------------------------------------------------------------
+  def pay_skill_cost(skill)
+    self.mp -= skill_mp_cost(skill)
+    self.tp -= skill_tp_cost(skill)
+  end
+  #--------------------------------------------------------------------------
+  # * Check When Skill/Item Can Be Used
+  #--------------------------------------------------------------------------
+  def occasion_ok?(item)
+    $game_party.in_battle ? item.battle_ok? : item.menu_ok?
+  end
+  #--------------------------------------------------------------------------
+  # * Check Common Usability Conditions for Skill/Item
+  #--------------------------------------------------------------------------
+  def usable_item_conditions_met?(item)
+    movable? && occasion_ok?(item)
+  end
+  #--------------------------------------------------------------------------
+  # * Check Usability Conditions for Skill
+  #--------------------------------------------------------------------------
+  def skill_conditions_met?(skill)
+    usable_item_conditions_met?(skill) &&
+    skill_wtype_ok?(skill) && skill_cost_payable?(skill) &&
+    !skill_sealed?(skill.id) && !skill_type_sealed?(skill.stype_id)
+  end
+  #--------------------------------------------------------------------------
+  # * Check Usability Conditions for Item
+  #--------------------------------------------------------------------------
+  def item_conditions_met?(item)
+    usable_item_conditions_met?(item) && $game_party.has_item?(item)
+  end
+  #--------------------------------------------------------------------------
+  # * Determine Skill/Item Usability
+  #--------------------------------------------------------------------------
+  def usable?(item)
+    return skill_conditions_met?(item) if item.is_a?(RPG::Skill)
+    return item_conditions_met?(item)  if item.is_a?(RPG::Item)
+    return false
+  end
+  #--------------------------------------------------------------------------
+  # * Determine if Equippable
+  #--------------------------------------------------------------------------
+  def equippable?(item)
+    return false unless item.is_a?(RPG::EquipItem)
+    return false if equip_type_sealed?(item.etype_id)
+    return equip_wtype_ok?(item.wtype_id) if item.is_a?(RPG::Weapon)
+    return equip_atype_ok?(item.atype_id) if item.is_a?(RPG::Armor)
+    return false
+  end
+  #--------------------------------------------------------------------------
+  # * Get Skill ID of Normal Attack
+  #--------------------------------------------------------------------------
+  def attack_skill_id
+    return 1
+  end
+  #--------------------------------------------------------------------------
+  # * Get Skill ID of Guard
+  #--------------------------------------------------------------------------
+  def guard_skill_id
+    return 2
+  end
+  #--------------------------------------------------------------------------
+  # * Determine Usability of Normal Attack
+  #--------------------------------------------------------------------------
+  def attack_usable?
+    usable?($data_skills[attack_skill_id])
+  end
+  #--------------------------------------------------------------------------
+  # * Determine Usability of Guard
+  #--------------------------------------------------------------------------
+  def guard_usable?
+    usable?($data_skills[guard_skill_id])
+  end
+end