Gold Drop Variance

#==============================================================================
#    Gold Drop Variance
#    Version: 1.0
#    Author: modern algebra (rmrk.net)
#    Date: April 22, 2011
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#  Description:
#
#    Gold drops in RMVX are static by default, with every creature always
#   dropping the exact same amount every time you kill them. This script allows
#   you to change that by making them drop a random amount between values that
#   you choose.
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#  Instructions:
#
#    Paste this script into its own slot in the Script Editor (F11), above Main
#   and below other custom scripts.
#
#    To set this script up, go to line 42 and set the default variance. That is
#   the default amount the gold drops could vary by when you kill a monster. If
#   you want it so that the variance is different for specific monsters, then
#   all you need to do is put the following code in those monster's note box:
#
#        \var_gold[x]
#
#   Where x is the integer you want the drop to vary by. That will set it so
#   that the drop for that monster will vary between the normal drop and the
#   normal drop + x. So, if it is 10 and the enemy is set to 20, then it will
#   drop between 20 and 29 gold. You could also set it by percent with the code:
#
#        \var_gold[y%]
#
#   Where y is the percent you want it to vary by. That will set it so the
#   monster will drop between the normal drop and the normal drop + y%. So, if
#   it is set to 25 and the enemy is set to 20, then it will drop between 20 and
#   24 gold (since 25% of 20 is 5).
#
#   If you want to change the note box code, go to line 50.
#==============================================================================
#\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
#    EDITABLE REGION
#||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
#  MAGDV_DEFAULT_VARIANCE - This is the default amount gold drops will vary by.
# If it is an integer, then it will vary between the set amount and this. If
# you make it a float (20.0 rather than 20), then it will vary by that percent
# of the set amount (ie. if the set amount is 160 and this value is set to 20.0,
# then the amount dropped will be between 160 and 191. (since 20% of 160 is 32)
# If you want some enemies to have a different variance, you just need to tag
# it in their noteboxes (see lines 19 - 35).
MAGDV_DEFAULT_VARIANCE = 20.0
#  MAGDV_REGEXP - You shouldn't need to modify this; all this does is allow you
# to change the notebox code which you can use to change the specific variance
# for enemies. The default value is "VAR_GOLD", meaning the code \var_gold[x]
# will be the notebox code. If you change it to "VG", for instance, the code
# would be \vg[x]. It is up to you.
MAGDV_REGEXP = "VAR_GOLD"
#||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
#    END EDITABLE REGION
#//////////////////////////////////////////////////////////////////////////////

$imported = {} if !$imported
$imported["MAGoldDropVariance"] = true

#==============================================================================
# ** RPG::Enemy
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#  Summary of Changes:
#    aliased method - gold
#==============================================================================

class RPG::Enemy
  #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  # * Gold
  #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  alias mlgb_luk_gld_9og1 gold unless self.method_defined? (:mlgb_luk_gld_9og1)
  def gold (*args, &block)
    gld = mlgb_luk_gld_9og1 (*args, &block) # Run Original Method
    add = gold_variance
    if add.is_a? (Float)
      add = ((gld*add) / 100).to_i
    end
    return gld + (rand (add))
  end
  #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  # * Gold Variance
  #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  def gold_variance
    if !@gold_variance
      @gold_variance = MAGDV_DEFAULT_VARIANCE
      if self.note[/#{MAGDV_REGEXP}\[(\d+)(%?)\]/i] != nil
        @gold_variance = $2.empty? ? $1.to_i : $1.to_f
      end
    end
    return @gold_variance
  end
end