Switch Timer System v1.0

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#↓                                                                            ↓#
#↓                      Switch Timer System: Version 1.0                      ↓#
#↓                                                                            ↓#
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#↑                                                                            ↑#
#↑                            Written By: Joe Pro                             ↑#
#↑                        Last Edited:  July 31, 2014                         ↑#
#↑                                                                            ↑#
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#◙ ** Disclaimer                                                              ◙#
#◙••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••◙#
#◙                                                                            ◙#
#◙ This script is not for commercial, if you wish to use this script in a     ◙#
#◙ game please PM me. All credit is to be given to me as the author of this   ◙#
#◙ script.                                                                    ◙#
#◙                                                                            ◙#
#◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙#
#◙ ** How To Use                                                              ◙#
#◙••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••◙#
#◙                                                                            ◙#
#◙ * Use the example below in an event script call to set up a new timer.     ◙#
#◙                                                                            ◙#
#◙    set_up_timer(goal_time, scene_type, $game_switch_id)                    ◙#
#◙                                                                            ◙#
#◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙#
#◙ ** Updates / Version Notes                                                 ◙#
#◙••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••◙#
#◙                                                                            ◙#
#◙   v0.1                                                                     ◙#
#◙ ~◄◙◙◙◙►~                                                                   ◙#
#◙ * This script allows you to set up a timer to be used through out the game.◙#
#◙   Each timer can be assigned it's own switch. They can also be set up to   ◙#
#◙   only update if a certian scene is running.                               ◙#
#◙                                                                            ◙#
#◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙#



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#↓                                                                            ↓#
#↕                     Switch Timer System: Version 1.0                       ↕#
#↑                                                                            ↑#
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#==============================================================================
# ** Game_System
#------------------------------------------------------------------------------
#  This class handles system data. It saves the disable state of saving and
# menus. Instances of this class are referenced by $game_system.
#==============================================================================

class Game_System

  #--------------------------------------------------------------------------
  # * Public Instance Variables
  #--------------------------------------------------------------------------
  attr_accessor :timers            # timers

  #--------------------------------------------------------------------------
  # * Aliasing Method: Object Initialization
  #--------------------------------------------------------------------------
  alias :gsi21321321 :initialize

  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def initialize
    gsi21321321()
    @timers = {}
  end

  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def add_timer(goal_time, scene_type, switch)
    @timers[(@timers.size + 1)] = {
      :start => Graphics.frame_count,
      :current => Graphics.frame_count,
      :goal_time => goal_time,
      :scene_type => scene_type,
      :switch => switch,
    }
  end

  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def update_timer(id)
    @timers[id][:current] += 1
  end

  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def end_timer(id)
    $game_switches[@timers[id][:switch]] = true if @timers[id][:switch]
    @timers.delete(id)
  end

  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def time_up?(id)
    goal_time = @timers[id][:goal_time]
    current = @timers[id][:current]
    start = @timers[id][:start]
    return ((current - start) / Graphics.frame_rate) >= goal_time
  end

  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def update_all_timers
    @timers.each_key { |id|
      if @timers[id][:scene]
        update_timer(id) if SceneManager.scene_is?(@timers[id][:scene])
      else
        update_timer(id)
      end
      end_timer(id) if time_up?(id)
    }
  end

end


#==============================================================================
# ** Game_Interpreter
#------------------------------------------------------------------------------
#  An interpreter for executing event commands. This class is used within the
# Game_Map, Game_Troop, and Game_Event classes.
#==============================================================================

class Game_Interpreter

  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def set_up_timer(goal_time, scene_type = nil, switch = nil)
    $game_system.add_timer(goal_time, scene_type, switch)
  end

end


#==============================================================================
# ** Scene_Base
#------------------------------------------------------------------------------
#  This is a super class of all scenes within the game.
#==============================================================================

class Scene_Base

  #--------------------------------------------------------------------------
  # * Aliasing Method: Frame Update
  #--------------------------------------------------------------------------
  alias :sbu325434 :update

  #--------------------------------------------------------------------------
  # * Frame Update
  #--------------------------------------------------------------------------
  def update
    sbu325434
    $game_system.update_all_timers
  end

end