View source for Calculating Weapon Skill Damage

[[Category: Guides]]
'''NOTE: This page has not been reviewed for any HorizonXI related changes''' Information taken from https://ffxiclopedia.fandom.com/wiki/Calculating_Weapon_Skill_Damage?oldid=1082679 before any 75+ related changes were made. 

== Magic-Based Weapon Skills ==
*Damage = (( Lv+2+[[WSC]] ) * [[fTP]] + fINT ) * [[Calculating_Magic_Damage#Resist | Resist]] * [[Calculating_Magic_Damage#Staff_Bonus | Elemental Staves]] * [[Calculating_Magic_Damage#Magic_Attack_Bonus_.2F_Magic_Defense_Bonus | Weather]] * [[Calculating_Magic_Damage#Magic_Attack_Bonus_.2F_Magic_Defense_Bonus |MDIF]]  * [[Calculating_Magic_Damage#Target_Magic_Damage_Adjustment | Magic Damage Adjustment]]
;Where
:'''[[WSC]]''': Secondary attribute like [[STR]] 30% (30% of your [[STR]]) (See individual [[:Category:Weapon Skills|Weapon Skill]]) 
:'''[[fTP]]''': [[TP]] Multiplier (See individual [[:Category:Weapon Skills|Weapon Skill]]) 
:'''fINT''' : function of your [[INT]] and target's [[INT]]
:: for WS, fINT = 8 + &Delta;[[INT]]/2
:: &Delta;[[INT]] : difference between your [[INT]] and target’s [[INT]] (caps at 24 for WS)
:'''Resist''' : Possibilities are 
::No Resist(1/1)
::Half Resist(1/2)
::Quarter Resist(1/4)
::Resisted(1/8 and 1/16)
::Void(0)
:'''Weather'''
::if WS is used in single weather effect = 1.1 (+0.1)
::if WS is used in double weather effect = 1.25 (+0.25)
::Conversely, if WS is being used on the day where WS element is weak to, the multiplier is reduced by 0.1 and 0.25
:'''MDIF''' : ratio of your Magic ATK to target’s Magic DEF (Matk/Mdef)
:'''Magic Damage Adjustment''' : (1 + or - (Shells, [[Blood Pact|Shining Ruby]], sum of magic damage cut equipment))
::This parameter have denominator of 256 (1/256), for example
::[[Shell]] I is -24/256, [[Shell II]] is -36/256, [[Shell III]] is -48/256
::[[Shell IV]] is -56/256, [[Blood Pact|Shining Ruby]] is -10/256, [[Bubble Curtain]] is -128/256

:: The smallest Magic Damage Adjustment number given by equipment capped the multiplier to 128/256 (0.5)

::Certain magic damage adjustments of particular monster family have been found:
::[[Ebony Pudding]]s in [[Mount Zhayolm]] appear to take 25% bonus magic damage (+64/256).
::[[Eo'ghrah]]s in [[Grand Palace of Hu'Xzoi]] appear to take 87.5% magic damage (-32/256).
::[[Demon]], [[Ahriman]], [[Corse]], [[Cardian]] have 25%(-64/256) magic damage cut
::[[Evil Weapon]] have 12.5%(-32/256) magic damage cut
::To some particular HNM, magic damage cut can occur occasionally when using the same element against that of HNM
::
<br><br>

== Physical-Based Weapon Skills ==
[[File:pDIF.gif|thumb|Melee PDIF function]]
[[File:R-pdif-v2.gif|thumb|Ranged PDIF function]]
*Damage = [[Base Damage| WD]] * [[PDIF]] = ([[Weapon Base Damage| D]] + [[fSTR]] + [[WSC]]) * [[fTP]] * [[PDIF]]

;Where
:[[Base Damage| WD]]: Base damage of your [[:Category:Weapon Skills|Weapon Skill]]
:[[Weapon Base Damage| D]]: Base damage of your weapon (e.g., [[Espadon]] = 43)
:[[fSTR]]: function of difference between your [[STR]] and target's [[VIT]]
:[[WSC]]: Secondary attribute like STR 30% (30% of your STR)
:[[fTP]] : [[TP]] Multiplier (See individual [[:Category:Weapon Skills|Weapon Skill]]) 
:[[PDIF]]: function of (your Physical ATK/target’s Physical DEF)
:[[WSC]] = integer(any secondary attributes) x @

     Level    @
     Lv75... 0.83
     Lv74... 0.83
     Lv73... 0.84
     Lv72... 0.84
     Lv67... 0.86 or 0.87 (perhaps 0.87)
     Lv60... 0.90 or 0.91 (perhaps 0.90)
     Lv40... 0.94 
     Lv37... 0.94 – 0.99
     Lv31... 0.94 - 0.99

*For example, suppose you are level 67 and have 100 [[STR]] and 100 [[MND]] and you use [[Swift Blade]] ([[STR]] 30%, [[MND]] 30%).
*[[WSC]] = integer[(100 x 0.3) + (100 x 0.3)] x @ = integer(60) x @ = 60 x .86
:(@ is 0.86 - 0.87 at LV67)
*WD = ([[Weapon Base Damage| D]] + [[fSTR]] + [[WSC]]) * [[fTP]]
:For [[Sneak Attack]] with Thief main, the calculation is WD = ([[Weapon Base Damage| D]] + [[fSTR]] + [[WSC]]) * [[fTP]] + [[DEX]]
:For [[Trick Attack]] with Thief main, the calculation is WD = ([[Weapon Base Damage| D]] + [[fSTR]] + [[WSC]]) * [[fTP]] + [[AGI]]
:For [[Sneak Attack]] and [[Trick Attack]] with Thief main, the calculation is WD = ([[Weapon Base Damage| D]] + [[fSTR]] + [[WSC]]) * [[fTP]] + [[DEX]] + [[AGI]]


* Only weapon skills that say "Chance of [[critical]] varies with TP" can have a critical hit within the WS without forced critical (i.e. [[Sneak Attack]] or [[Mighty Strikes]]).
** Base critical hit chance varies between weapon skills.
* WS gorgets from [[In the Name of Science]] add 0.097 to [[fTP]] for the first hit.
** They also increase WS accuracy, which applies to all hits.
* Hybrid weapon skills deal both physical and elemental damage and can be considered a 2+ hit weapon skill. The base damage of the elemental hit is based on the amount of physical damage done and TP.

== See also ==
* [[:Category:Weapon Skills|Weapon Skills]]
* [http://ffxi.allakhazam.com/journal2.html?user=313276&mid=1099606680697846812 Allakhazam : Discussion & Source]
* [http://wiki.ffxionline.com/index.php?title=Calculating_Weapon_Skill_Damage FFXI Online : Detailed Discussion].
* [http://www.freewebs.com/vzx-01/ VZX FFXI Doc]
* [http://www.geocities.co.jp/Playtown-Part/6371/memo.html Studio Gobli's Memo (Japanese)].  Also [http://www32.atwiki.jp/studiogobli/ Studio Gobli's new website].
* [http://www.bluegartrls.com/forum/viewtopic.php?p=528731#528731 Critical hit rate research -- (Broken, requires new link)]