[VX ACE] [YANFLY] TRYING TO UNDERSTAND THE SCRIPTS I USE.

#==============================================================================
# ** Earthbound-Ish Odometer Roll
#------------------------------------------------------------------------------
# Version: 1.0
# Author: cozziekuns
# Date: February 17, 2013
#==============================================================================
# Description:
#------------------------------------------------------------------------------
# This script attempts to emulate the battle system of the Earthbound/Mother
# series; most notably Earthbound and Earthbound 2 (Mother 2 and 3). This
# certain addon addresses the infamous HP/MP scrolling system that made battles
# that much more intense.
#==============================================================================
# Instructions:
#------------------------------------------------------------------------------
# Paste this script into its own slot in the Script Editor, above Main but
# below Materials. Edit the modules to your liking.
#==============================================================================
# Graphics:
#------------------------------------------------------------------------------
# You must have two Odometer pictures in your Graphics/System folder. One of
# them must be named "Odometer_HP", and the other one must be named
# "Odometer_MP". Obviously, they represent the odometer for HP and MP values,
# respectively
#==============================================================================
#
#==============================================================================
# ** Cozziekuns
#==============================================================================

module Cozziekuns

module Earthboundish

Odometer_Roll_Speed = 4 # Smaller speeds are faster than larger speeds.

end

end

include Cozziekuns

#==============================================================================
# ** Game_Actor
#==============================================================================

class Game_Actor

attr_accessor :odometer_hp
attr_accessor :odometer_mp

alias coz_ebisohd_gmactr_setup setup
def setup(actor_id, *args)
coz_ebisohd_gmactr_setup(actor_id, *args)
@odometer_hp = 0
@odometer_mp = 0
end

alias coz_ebishod_gmactr_execute_damage execute_damage
def execute_damage(user, *args)
if $game_party.in_battle
on_damage(@result.hp_damage) if @result.hp_damage > 0
@odometer_hp += @result.hp_damage
@odometer_mp += @result.mp_damage
user.hp += @result.hp_drain
user.mp += @result.mp_drain
else
coz_ebishod_gmactr_execute_damage(user, *args)
end
make_damage_popups(user)
end

.each { |stat|
alias_method("coz_ebishod_gmactr_item_effect_recover_#{stat}".to_sym, "item_effect_recover_#{stat}".to_sym)
define_method("item_effect_recover_#{stat}".to_sym) { |user, item, effect|
if $game_party.in_battle
value = (send("m#{stat}".to_sym) * effect.value1 + effect.value2) * rec
value *= user.pha if item.is_a?(RPG::Item)
value = value.to_i
@result.send("#{stat}_damage=".to_sym, @result.send("#{stat}_damage".to_sym) - value)
@result.success = true
send("odometer_#{stat}=".to_sym, send("odometer_#{stat}".to_sym) - value)
else
send("coz_ebishod_gmactr_item_effect_recover_#{stat}".to_sym, user, item, effect)
end
}
}

end

#==============================================================================
# ** Window_BattleStatus
#==============================================================================

class Window_BattleStatus