[VXA] Luck Influenced Drop Rates (ver1.0)
Version: 1.0
Author: Logan Forrests
Date: February 02 2013
Version History
- <Version 1.0> 2013.02.02 - Original Release
Planned Future Versions
Suggestions are welcome.
Description
A script that allows the Luck stat to play a part in item drop rates. Two modes exist:
- Party Luck: The total luck of the party is used (along with a modifier) to increase the chance of an item being dropped.
- Actor Luck: The Luck of the actor who lands the killing blow (along with a modifier) will be used to increase the chance of an item being dropped.
Features
- Luck now increases the chance that an item will drop.
- Can be based on the active party's Luck combined, or the individual Luck of the actor who lands the killing blow.
- Change the increase effect that each point of Luck has on drop rate.
- Includes a modifier to determine what portion of the Luck is used to affect drop rate.
- Built-in compatibility with modern algebra's Drop Options (v1.1.0) script for VXA.
Instructions
Insert the script anywhere in the script editor in Materials. If using modern algebra's Drop Options script, this script must be placed directly below Drop Options.
Script
#------------------------------------------------------------------------------
# Luck Influenced Drop Rates (ver1.0) [VXA]
#
#==============================================================================
# About
#------------------------------------------------------------------------------
# Title: Luck Infuenced Drop Rates (OvertureAce)
#
# A script that allows the Luck stat to play a part in item drop rates.
# Two modes exist:
# Party Luck: The total luck of the party is used (along with a modifier)
# to increase the chance of an item being dropped.
# Actor Luck: The Luck of the actor who lands the killing blow (along with
# a modifier) will be used to increase the chance of an item
# being dropped.
#
# Version: 1.0
# # 1.0 - Initial Release
#
# Date Published: 02 February 2013
# Last Updated : 02 February 2012
# Author: Logan Forrests
# Hosted on: RMRK.net only.
#
# Permissions for use of this script can be found here:
# - http://rmrk.net/index.php/topic,45481.0.html
#
# Redistribution of this script is stricly prohibited with prior permission.
#==============================================================================
# Directions
#------------------------------------------------------------------------------
# There are three values that are to be changed to your needs below.
#
# INCREASE_PER_LUCK: Determines how much of a percentage increase each point
# of calculated Luck will provide. Default: 0.1% per Luck.
#
# BASED_ON_KILLER: True or False.
# If true, the actor who lands the final blow on an enemy will have their
# Luck stat used to determine the items that drop from that particular
# enemy only.
# If false, the collective Luck of the battle party members will be used.
#
# LUCK_MODIFIER: A value which is multiplied to the Luck value used.
# Default: 1.0 (Luck * 1.0; every point of Luck is used)
# Best lowered when using Party based Luck to reduce the potential for large
# drop rate increase. Eg, if combined Party Luck is 500, and the
# INCREASE_PER_LUCK value is 0.1, leaving the modifier to 1.0 will increase
# drop rate by 50%. Thus, a lower modifier will reduce this total to a
# more reasonable value.
#==============================================================================
# Compatibiliy
#------------------------------------------------------------------------------
# This script overwrites the Game_Enemy#make_drop_items method.
# There will likely be issues with scripts that make use of this method.
# Fixes will be made to accommodate the use of additional scripts. To check
# for the latest Compatibility Fixes, check out the support thread at
# http://rmrk.net/
#
# Built In Fixes
# Drop Options v1.1.0 by modern algebra (RMRK.net)
# - Place this script underneeath Drop Options v1.1.0
#==============================================================================
module OvertureAce
module Drop_Rate
#The percentage increase that each point of Luck will have on drop rates
# Eg. 0.1 will increase drop chance by 0.1% per Luck stat.
INCREASE_PER_LUCK = 0.1
#Determines if the killer's Luck is solely used
# When true, only the actor who lands the killing blow will
# cause an increase in drop rate
# When false, the combination of the party's Luck will be used.
BASED_ON_KILLER = true
#Determines what amount of luck is used in drop rate increase.
# Eg. 1.0 will use 100% of the luck value. 0.25 will use 25% of the luck.
# Thus, the amount of luck used is LUCK * LUCK_MODIFIER.
# The final value will be rounded down to the nearest Integer.
LUCK_MODIFIER = 1.0
end
end
#==============================================================================
# DO NOT EDIT BELOW THIS LINE ::::::::::::::: DO NOT EDIT BELOW THIS LINE #
#==============================================================================
$imported = {} unless $imported
$imported[:OVALuckDropRate] = true
#==============================================================================
# ** Game_Enemy
#==============================================================================
class Game_Enemy
#--------------------------------------------------------------------------
# * Make list of items that are dropped
# Overwritten: changes - drop rate chance formula (creates alias for
# fixes)
#--------------------------------------------------------------------------
alias_method(:ova_ldr_mdi_ge_mefu, :make_drop_items) #Preserves original
def make_drop_items(*args, &block)
enemy.drop_items.inject([]) do |r, di|
if di.kind > 0 && ova_determine_drop_success(di)
r.push(item_object(di.kind, di.data_id))
else
r
end
end
end
#--------------------------------------------------------------------------
# * Determine if Item will drop
# di : drop_item
#--------------------------------------------------------------------------
def ova_determine_drop_success(di)
rand < (1.0 / di.denominator) * drop_item_rate + ova_luck_dr_effect
end
#--------------------------------------------------------------------------
# * Calculate the effect of Luck stat on Drop Rate
#--------------------------------------------------------------------------
def ova_luck_dr_effect
ova_luck_type_value * ova_dr_increase_per
end
#--------------------------------------------------------------------------
# * Determine which luck value to use (killer or party?)
#--------------------------------------------------------------------------
def ova_luck_type_value
if OvertureAce::Drop_Rate::BASED_ON_KILLER
$game_temp.ova_kill_shot_record[self].ova_drop_rate_luck
else #Based on party luck (includes modifier
$game_party.ova_drop_rate_luck
end
end
#--------------------------------------------------------------------------
# * Expresses the INCREASE_PER_LUCK as a percentage
#--------------------------------------------------------------------------
def ova_dr_increase_per
OvertureAce::Drop_Rate::INCREASE_PER_LUCK / 100.0
end
end
#==============================================================================
# ** Game_Battler
#==============================================================================
class Game_Battler
#--------------------------------------------------------------------------
# * Calculate the drop rate luck effect of member; only for actors
#--------------------------------------------------------------------------
def ova_drop_rate_luck
actor? ? (luk * OvertureAce::Drop_Rate::LUCK_MODIFIER) : 0
end
#--------------------------------------------------------------------------
# * Execute Damage
# aliased: adds - records who landed the kill shot
#--------------------------------------------------------------------------
alias_method(:ova_ldr_ed_gbat_n8y7, :execute_damage)
def execute_damage(user, *args, &block)
#run original method
ova_ldr_ed_gbat_n8y7(user, *args, &block)
#check if self.hp is <= 0, if so, set as kill blow
$game_temp.ova_kill_shot_record[self] = user if self.hp <= 0
end
end
#==============================================================================
# ** Game_Party
#==============================================================================
class Game_Party
#--------------------------------------------------------------------------
# * Calculate total luck of the party
#--------------------------------------------------------------------------
def luck
members.inject(0) { |r, m| r += m.luk }
end
#--------------------------------------------------------------------------
# * Calculates the party's total luck after modifier
#--------------------------------------------------------------------------
def ova_drop_rate_luck
(luck * OvertureAce::Drop_Rate::LUCK_MODIFIER).truncate
end
end
#==============================================================================
# ** Module BattleManager
#==============================================================================
class << BattleManager
#--------------------------------------------------------------------------
# * Setup
# aliased: adds - clear_killshot_record call
#--------------------------------------------------------------------------
alias_method(:ova_ldr_setup_batman_xs3e, :setup)
def setup(*args, &block)
#call original method
ova_ldr_setup_batman_xs3e(*args, &block)
#Esnure clear kill shot recorder in Game_Temp
clear_killshot_record
end
#--------------------------------------------------------------------------
# * Victory Processing
# aliased: adds - clear_killshot_record call
#--------------------------------------------------------------------------
alias_method(:ova_ldr_procvic_batman_o94r, :process_victory)
def process_victory(*args, &block)
ova_ldr_procvic_batman_o94r(*args, &block)
#clear $game_temp kill shot recorder
clear_killshot_record
#return true
return true
end
#--------------------------------------------------------------------------
# * Clears the killshot record in $game_temp if $game_temp exists
#--------------------------------------------------------------------------
def clear_killshot_record
$game_temp.ova_ldr_killshot_clear if $game_temp
end
end
#==============================================================================
# ** Game_Temp
#==============================================================================
class Game_Temp
#records the actors who landed the killing shot on each enemy
attr_accessor :ova_kill_shot_record
#--------------------------------------------------------------------------
# * Initialize
# aliased: adds - ova_ldr_killshot_clear call
#--------------------------------------------------------------------------
alias_method(:ova_ldr_init_gtemp_aw3w, :initialize)
def initialize(*args, &block)
#create a hash to store which enemy was killed by which actor
ova_ldr_killshot_clear
#run original method
ova_ldr_init_gtemp_aw3w(*args, &block)
end
#--------------------------------------------------------------------------
# * Clears the hash: ova_kill_shot_record
#--------------------------------------------------------------------------
def ova_ldr_killshot_clear
@ova_kill_shot_record = {}
end
end
#==============================================================================
# Compatibility Fix: Drop Options v1.1.0 by modern algebra (rmrk.net)
#==============================================================================
# About
#------------------------------------------------------------------------------
# Fixes: Game_Enemy#ma_make_extra_drops
# - Amends the formula used to calculate drop rates to reflect
# the changes that Luck Drop Rates makes.
# - Allows Luck to influence the drop rates of extra items
#==============================================================================
if $imported[:MADropOptions]
class Game_Enemy
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# * Redirect Method
# redirects make_drop_items to the version created in Drop Options
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
def make_drop_items(*args, &block)
ova_ldr_mdi_ge_mefu(*args, &block)
end
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# * Make Extra Drops
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
def ma_make_extra_drops
result = []
enemy.ma_extra_drops.each { |di|
if di.kind > 0
bool = di.denominator.is_a?(Integer) ? ova_determine_drop_rate_success(di) : ovafix_mado_determine_percent_drop_success(di)
result.push(item_object(di.kind, di.data_id)) if bool
end
}
while result.size > enemy.ma_max_drops
result.delete_at(rand(result.size))
end
result
end
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# * Calculate the drop success based on non integer denominators
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
def ovafix_mado_determine_percent_drop_success(di)
luck_effect = ova_luck_type_value * OvertureAce::Drop_Rate::INCREASE_PER_LUCK
rand(100) < (di.denominator * drop_item_rate) + luck_effect
end
end
#==============================================================================
end #$imported
Credit
Thanks
- Modern Algebra, for pointing out a slight oversight.
- Everyone else at RMRK.net for being awesome folks.
Support
Support can be provided with this thread.
Known Compatibility Issues
This script overwrites Game_Enemy#make_drop_items, though the original method is preserved so a fix is easily possible. Any script which calls this method may likely require a compatibility fix. Let me know which script needs a fix and I will get onto it.
A fix for Drop Options is already included with this script.
Additional fixes will be posted below as they arise.
Terms of Use
The following Terms of Use (http://rmrk.net/index.php/topic,45481.0.html) apply to this script.