4 tiered currency system

#           Script Four Tiered Currency Script, version 0.1
#           Author: Bgillisp
#           Released: 9/29/2014

#           This script sets it up so that there are 4 currencies in the game
#           The currencies are currently Brozne, Copper, Silver, and Gold
#           with 100 Bronze = 1 Copper, 100 Copper = 1 Silver,
#           and 100 Silver = 1 Gold

#           This script auto-adjusts the display for the parties gold and
#           shops to show all values in the new currency. Whenever the party
#           has 100 of a currency, it auto-converts to the new currency. So
#           if you find 150 Bronze in a battle, the script will convert it
#           to 1 Copper, 50 Bronze in the display

#           To use, set all enemy drops and all item prices to their value
#           in bronze. For instance, if you want an item to cost 4 Silver,
#           set the price to 400 in the database. The script will do the rest.

#           Requires an adjust limits script if you want to have items
#           cost more than 999999 Bronze (99 Silver, 99 Copper, and 99 Bronze)

#           Early beta version, more features coming.

#           Pending features:
#           -Change the display after battles to show the new currency.
#            Currently, it will show the award in the currency set under the
#            system tab. Set the currenty to Bronze in the game for now,
#            and it will be functional, but more work is needed on this.

#           -Fix it so that an adjust limits script is not required.

#----------------------------------------------------------------------------
# Editable region

#None, hardcoded for early testing. Will fix in another release.

#End of Editable Region
#--------------------------------------------------------------------------


#Do not edit anything below here unless you know what you are doing.
#Failure to ahead to this warning may result in unpredictable behavior in
#your game. Consider yourself warned
#__________________________________________________________________________


class Game_Party < Game_Unit

  #Overwrite method, max_gold
  #Keep max gold at 999,999,999,999.
  def max_gold
    return 999999999999
  end

end

class Window_Base < Window

  #Overwrite method, draw currency value
  def draw_currency_value(value, unit, x, y, width)
    cx = text_size(unit).width
    change_color(normal_color)
    store = value
    tier1 = store % 100
    tier2 = (store / 100).to_i % 100
    tier3 = (store / 10000).to_i % 100
    tier4 = (store / 1000000).to_i
    text = sprintf("%2dG %2dS %2dC %2dB", tier4, tier3, tier2, tier1)
    draw_text(x, y, width, line_height, text, 2)
  end

end

class Window_ShopBuy < Window_Selectable

  #Overwrite method, draw_item
  def draw_item(index)
    item = @data[index]
    rect = item_rect(index)
    draw_item_name(item, rect.x, rect.y, enable?(item))
    rect.width -= 4
    store = price(item)
    tier1 = store % 100
    tier2 = (store / 100).to_i % 100
    tier3 = (store / 10000).to_i % 100
    tier4 = (store / 1000000).to_i

    text = ""
    if(tier4 != 0)
      text = sprintf("%2dG", tier4)
    end

    if(tier3 != 0)
      text += sprintf("% 2dS", tier3)
    end

    if(tier2 != 0)
      text += sprintf("% 2dC", tier2)
    end

    if(tier1 != 0)
      text += sprintf("% 2dB", tier1)
    end

    #Default if the item is free.
    if(text == "")
      text = "0B"
    end

    #Display the new text for currency
    draw_text(rect, text, 2)
    #draw_text(rect, price(item), 2)
  end

end