#==============================================================================
# DSI Pre-Skills
# -- Last Updated: 2017.01.29
# -- Author: dsiver144
# -- Level: Normal
# -- Requires: n/a
#==============================================================================

$imported = {} if $imported.nil?
$imported["DSI-PreSkills"] = true

#==============================================================================
# + Updates
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# 2017.01.27 - Finish first version.
#==============================================================================
# + Instructions
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# To install this script, open up your script editor and copy/paste this script
# to an open slot below �� Materials/�f�� but above �� Main. Remember to save.
# -----------------------------------------------------------------------------
# Skill Notetags - These notetags go in the skills notebox in the database.
# -----------------------------------------------------------------------------
# <Common Event Run: id> : Run common event id before a skill is being executed.
# <variable #id:operate,value> Set, Plus, Minus, Multi, Divide, Mod an variable
#                              by value.
# ex: <variable #45:'+',45> : Add 45 to variable id 45
#     <variable #45:'=',v[5]>: Set the value of variable 45 equal to value of
#                              variable id 5
#==============================================================================
# + Compatibility
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# This script is made strictly for RPG Maker VX Ace. It is highly unlikely that
# it will run with RPG Maker VX without adjusting.
#==============================================================================
module DSIVER144
  module PRE_SKILL
    CME_NOTE = /<Common Event Run:\s*(\w+)>/i
    VAR_SET_NOTE = /<variable #(\w+):\s*(\W+),\s*(.+)>/i
  end
end #DSIVER144
#==============================================================================
# DataManager
#==============================================================================
module DataManager
  #--------------------------------------------------------------------------
  # alias method: load_database
  #--------------------------------------------------------------------------
  class <<self; alias load_database_pre_skill load_database; end
  def self.load_database
    load_database_pre_skill
    load_notetags_pre_skill
  end
  #--------------------------------------------------------------------------
  # Load Notetag State Animation
  #--------------------------------------------------------------------------
  def self.load_notetags_pre_skill
    for skill in $data_skills
      next if skill.nil?
       skill.load_notetags_pre_skill
    end
  end
end # DataManager
#==============================================================================
# �� RPG::State
#==============================================================================
class RPG::Skill
  #--------------------------------------------------------------------------
  # public instance variables
  #--------------------------------------------------------------------------
  attr_accessor :pre_skill_cme
  attr_accessor :pre_skill_variables
  #--------------------------------------------------------------------------
  # common cache: load_notetags_sani
  #--------------------------------------------------------------------------
  def load_notetags_pre_skill
    @pre_skill_cme = nil
    @pre_skill_variables = nil
    self.note.split(/[\r\n]+/).each do |line|
      if line =~ DSIVER144::PRE_SKILL::CME_NOTE
        @pre_skill_cme = $1.to_i
      end
      if line =~ DSIVER144::PRE_SKILL::VAR_SET_NOTE
        a = $1.to_i
        b = $2.to_s
        c = $3
        symbol = b.scan(/['|"]\s*(.+)\s*['|"]/i)[0][0]
        if symbol == "="
          symbol = ""
        end
        variable = c.gsub(/v\[(\w+)\]/i) {"$game_variables[#{$1.to_i}]"}
        if !$1
          variable = c.to_f.round(0).to_s
        end
        @pre_skill_variables = [a,symbol,variable]
      end
    end
  end
end # RPG::State
#=============================================================================
# ♦ Scene_Battle
#=============================================================================
class Scene_Battle
  alias dark_use_item_pre_skill use_item
  #--------------------------------------------------------------------------
  # * alias method: use_item
  #--------------------------------------------------------------------------
  def use_item
    item_check = @subject.current_action.item
    if item_check.pre_skill_variables
      pre_adjust_variable(item_check)
    end
    if item_check.pre_skill_cme
      $game_temp.reserve_common_event(item_check.pre_skill_cme)
      process_common_event
    end
    dark_use_item_pre_skill
  end
  #--------------------------------------------------------------------------
  # * new method: process_common_event
  #--------------------------------------------------------------------------
  def process_common_event
    while !scene_changing?
      $game_troop.interpreter.update
      $game_troop.setup_battle_event
      wait_for_message
      wait_for_effect if $game_troop.all_dead?
      break unless $game_troop.interpreter.running?
      update_for_wait
    end
  end
  #--------------------------------------------------------------------------
  # * new method: pre_adjust_variable
  #--------------------------------------------------------------------------
  def pre_adjust_variable(skill)
    _vars = skill.pre_skill_variables
    str = "$game_variables[#{_vars[0]}] #{_vars[1]}= #{_vars[2]}"
    eval(str)
  end
end # Scene_Battle