[ReQ]Level Restriction Script

###############
# TagNote #
######################################################################
# Version 2.0 #
# Author: Queex #
# Licence: Creative Commons non-commercial attributive #
######################################################################
# Allows the easy use of tags in the note field for #
# objects to store data. Syntax is simple, and the system ignores #
# any lines in the notes field that don't match the syntax. #
# #
# Version history: #
# 1.2 Final 1.x version #
# 2.0 Changed to follow Ruby naming conventions #
# #
# Usage: #
# get_tag(<notes field>,<tag name>) #
# has_tag?(<notes field>,<tag name>) #
# has_tag_value?(<notes field>,<tag name>,<tag value>) #
# get_additional_tag(<notes field>,<tag name>,<index> #
# get_additional_tag_by_value(<notes field>,<tag name>,<tag value> #
# ,<index> #
# #
# Syntax in the note field: #
# <tag_name tag_value> #
# <tag_name> #
# <tag_name tag_value param1 param2 ...> #
######################################################################

module TAGNOTE

###########
# get_tag #
###################################################################
# Gets the stored value of the first occurrence of the named tag #
# in the notes field. #
# <tag_name tag_value tag_value2> will return 'tag_value' #
# <tag_name tag_value> will return 'tag_value' #
# <tag_name> will return true #
# if no tag with tag_name, returns nil #
###################################################################
def get_tag(note_field, tag_name)
lines=note_field.split("\n")
for line in lines
#process line by line
if line[0,1].eql?("<")
#this line has a tag
line2=line.split(/[<> ]/)
if line2[1].eql?(tag_name)
if(line2.length==2)
#there is actually no value
return true
else
return line2[2]
end
end
end
end
return nil
end

############
# has_tag? #
##################################################################
# Indicates whether the given note field has a tag of that name. #
# <tag_name tag_value tag_value2> and #
# <tag_name tag_value> and #
# <tag_name> will both return true #
# if no tag with tag_name, returns false #
##################################################################
def has_tag?(note_field,tag_name)
lines=note_field.split("\n")
for line in lines
if line[0,1].eql?("<")
line2=line.split(/[<> ]/)
if line2[1].eql?(tag_name)
return true
end
end
end
return false
end

##################
# has_tag_value? #
#################################################################
# Indicates whether the note field has a tag of a given name #
# with a certain value. #
# <tag_name tag_value> returns true #
# <tag_name wrong_tag_value> returns false #
# <tag_name> returns false #
# if no tag with tag_name has the correct value, returns false. #
# tag_value2 is ignored #
#################################################################
def has_tag_value?(note_field,tag_name,tag_value)
lines=note_field.split("\n")
for line in lines
if line[0,1].eql?("<")
line2=line.split(/[<> ]/)
if line2[1].eql?(tag_name) and line2[2].eql?(tag_value)
return true
end
end
end
return false
end

######################
# get_additional_tag #
######################################################################
# Gets additional parameters for a tag of a given name. #
# Calling with an index of 1 returns #
# the first value after the tag name. #
# Returns nil if the index is higher than the last parameter. #
# Returns false if no match for the tag name is found. #
######################################################################
def get_additional_tag(note_field,tag_name,index)
lines=note_field.split("\n")
for line in lines
if line[0,1].eql?("<")
line2=line.split(/[<> ]/)
if line2[1].eql?(tag_name)
if(line2.length<index+2)
#Actually no value to get
return nil
else
return line2[index+1]
end
end
end
end
return false
end

###############################
# get_additional_tag_by_value #
######################################################################
# Gets additional parameters for a tag of a given name #
# with a certain value. Calling with an index of 1 returns #
# the first value after the tag name. #
# Returns nil if the index is higher than the last parameter. #
# Returns false if no match for the tag name and tag value is found. #
######################################################################
def get_additional_tag_by_value(note_field,tag_name,tag_value,index)
lines=note_field.split("\n")
for line in lines
if line[0,1].eql?("<")
line2=line.split(/[<> ]/)
if line2[1].eql?(tag_name) and line2[2].eql?(tag_value)
if(line2.length<index+2)
#Actually no value to get
return nil
else
return line2[index+1]
end
end
end
end
return false
end

end

#=============================================================================
#Weapon level restriction script
#By: CrimsonSeas
#Credits to: Queex for the TagNote
#=============================================================================
#Once again a request at RMID, this script can be used to give equipments
#a required level to be equipped
#This version disables the unequippable equipment to be equipped, but once the
#level requirement is met, the equipment can be equipped.
#=============================================================================
#INSTRUCTIONS(IMPORTANT!!)
#To define an equipments level requirement, please write this line to the note
#box:
#<level_req x>
#where x is the requirement level.
#=============================================================================
module RPG
  class Weapon
    include TAGNOTE
    def level_requirement
      return 0 unless has_tag?(self.note, "level_req")
      return get_tag(self.note, "level_req").to_i
    end
  end
  class Armor
    include TAGNOTE
    def level_requirement
      return 0 unless has_tag?(self.note, "level_req")
      return get_tag(self.note, "level_req").to_i
    end
  end
end

class Scene_Equip
  def update_item_selection
    if Input.trigger?(Input::B)
      Sound.play_cancel
      @equip_window.active = true
      @item_window.active = false
      @item_window.index = -1
    elsif Input.trigger?(Input::C)&& @actor.level >= @item_window.item.level_requirement
      Sound.play_equip
      @actor.change_equip(@equip_window.index, @item_window.item)
      @equip_window.active = true
      @item_window.active = false
      @item_window.index = -1
      @equip_window.refresh
      for item_window in @item_windows
        item_window.refresh
      end
    elsif Input.trigger?(Input::C) && @actor.level < @item_window.item.level_requirement
      Sound.play_buzzer
    end
  end
end

class Window_EquipItem
  def enable?(item)
    return true if @actor.level >= item.level_requirement
    return false
  end
end