Difference between revisions of "Formulas and Game Mechanics"
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==Spellcasting==
 
==Spellcasting==
 +
It should be noted that the casting focus referred to in the discussion below is <b>not</b> the skill, [[Focus]].
 +
 
===Chance to Cast===
 
===Chance to Cast===
−
( Gathered from Wilki's statements in http://boards.stratics.com/php-bin/uo/showflat.php?Cat=&Number=7087151 )
+
The following information is gathered from [[UO]] [[Developer]] [[Wilki]]'s [http://boards.stratics.com/php-bin/uo/showflat.php?Cat=&Number=7087151 statements] on the [[Stratics]] message boards.
−
* ChanceToCast = ( ( Skill - ( Difficulty - ( Focus / 2 ) ) ) / Focus )%
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 +
* Chance to Cast = ( ( Skill - ( Difficulty - ( Casting Focus / 2 ) ) ) / Casting Focus )%
 
* Chance to Cast can never be negative, nor over 100%.
 
* Chance to Cast can never be negative, nor over 100%.
 
* The Minimum Skill Requirement to cast a spell exists two ways:
 
* The Minimum Skill Requirement to cast a spell exists two ways:
−
** For Chivalry, Magery, and Necromancy: MinimumRequirement = ( Difficulty - ( Focus / 2 ) )
+
** For [[Chivalry]], [[Magery]], and [[Necromancy]]: MinimumRequirement = ( Difficulty - ( Casting Focus / 2 ) )
−
** For Everything Else: MinimumRequirement = ( ( Difficulty - ( Focus / 2) ) + ( ( Focus * 5 ) / 20 ) )
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** For [[Bushido]], [[Ninjitsu]], [[Mysticism]] and [[Spellweaving]]: MinimumRequirement = ( ( Difficulty - ( Casting Focus / 2) ) + ( ( Casting Focus * 5 ) / 20 ) )
 
====Definitions====
 
====Definitions====
−
* Skill: The caster's skill level.
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* Skill: The caster's [[skill]] level.
−
* Difficulty: the point where you have 50% to succeed
+
* Casting Focus: A predetermined value that defines how wide the "window" is between 0-100%, centered on the difficulty value.
−
* Focus: How wide the "window" is between 0-100%, centered on the difficulty value
+
* Difficulty: the point where you have 50% to succeed.
−
* Minimum Requirement: Minimum skill level required before spell can be cast (even if the chance to cast is above 0)
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* Minimum Requirement: Minimum skill level required before spell can be cast (even if the chance to cast is above 0).
 
====Values====
 
====Values====
 +
----
 +
=====Casting Focus=====
 +
* All [[Bushido]]: 50
 +
* All [[Chivalry]]: 50
 +
* All [[Magery]]: 40
 +
* All [[Necromancy]]: 40
 +
* All [[Ninjitsu]]: 50
 +
* All [[Spellweaving]]: 50
 +
* All [[Mysticism]] : 50
 
=====Difficulty=====
 
=====Difficulty=====
 +
Minimum skill need for 50% success chance to cast.
 
======Bushido======
 
======Bushido======
−
:*
+
:* [[Honorable Execution]]: 37.5
 +
:* [[Counter Attack]]: 52.5
 +
:* [[Lightning Strike]]: 52.5
 +
:* [[Confidence]]: 37.5
 +
:* [[Evasion]]: 72.5
 +
:* [[Momentum Strike]]: 82.5
 
======Chivalry======
 
======Chivalry======
−
:* Cleanse by Fire: 30  
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:* [[Cleanse by Fire]]: 30  
−
:* Close Wounds: 25
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:* [[Close Wounds]]: 25
−
:* Consecrate Weapon: 40  
+
:* [[Consecrate Weapon]]: 40  
−
:* Dispel Evil: 60  
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:* [[Dispel Evil]]: 60  
−
:* Divine Fury: 50  
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:* [[Divine Fury]]: 50  
−
:* Enemy of One: 70  
+
:* [[Enemy of One]]: 70  
−
:* Holy Light: 80  
+
:* [[Holy Light]]: 80  
−
:* Noble Sacrifice: 90  
+
:* [[Noble Sacrifice]]: 90  
−
:* Remove Curse: 30
+
:* [[Remove Curse]]: 30
−
:* Sacred Journey: 40
+
:* [[Sacred Journey]]: 40
 
======Magery======
 
======Magery======
−
:* 1st Circle: 0
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:* [[Magery Spells|1st Circle]]: 20
−
:* 2nd Circle: 15
+
:* [[Magery Spells|2nd Circle]]: 16
−
:* 3rd Circle: 29
+
:* [[Magery Spells|3rd Circle]]: 30
−
:* 4th Circle: 43
+
:* [[Magery Spells|4th Circle]]: 44
−
:* 5th Circle: 58
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:* [[Magery Spells|5th Circle]]: 58
−
:* 6th Circle: 72
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:* [[Magery Spells|6th Circle]]: 72
−
:* 7th Circle: 86
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:* [[Magery Spells|7th Circle]]: 86
−
:* 8th Circle: 100
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:* [[Magery Spells|8th Circle]]: 100
 +
 
 
======Necromancy======
 
======Necromancy======
−
:*
+
:*[[Curse Weapon]]: 20
 +
:*[[Blood Oath]]: 40
 +
:*[[Corpse Skin]]: 40
 +
:*[[Evil Omen]]: 40
 +
:*[[Pain Spike]]: 40
 +
:*[[Wraith Form]]: 40
 +
:*[[Mind Rot]]: 50
 +
:*[[Summon Familiar]]: 50
 +
:*[[Animate Dead]]: 60
 +
:*[[Horrific Beast]]: 60
 +
:*[[Poison Strike]]: 70
 +
:*[[Wither]]: 80
 +
:*[[Strangle]]: 85
 +
:*[[Lich Form]]: 90
 +
:*[[Exorcism]]: 100
 +
:*[[Vengeful Spirit]]: 100
 +
:*[[Vampiric Embrace]]: 119
 +
 
 
======Ninjitsu======
 
======Ninjitsu======
−
:*
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:*[[Animal Form]]
 +
:**[[Animal_Form#Rabbit_.26_Rat_Form|Rabbit & Rat Form]]: 12.5
 +
:**[[Animal_Form#Cat_.26_Dog_Form|Cat & Dog Form]]: 52.5
 +
:**[[Animal_Form#Giant_Serpent_Form|Giant Serpent Form]]: 62.5
 +
:**[[Animal_Form#Bullfrog_Form|Bullfrog Form]]: 62.5
 +
:**[[Animal_Form#Ostard_.26_Llama_Form|Ostard & Llama Form]]: 82.5
 +
:**[[Animal_Form#Wolf_.26_Bake_Kitsune_Form|Wolf & Bake Kitsune Form]]: 97.5
 +
:**[[Animal_Form#Unicorn_Form|Unicorn Form]]: 111.5
 +
:**[[Animal_Form#Ki_Rin_Form|Ki Rin Form]]: 111.5
 +
:*[[Backstab]]: 32.5
 +
:*[[Surprise Attack]]: 42.5
 +
:*[[Mirror Image]]: 52.5
 +
:*[[Shadow Jump]]: 62.5
 +
:*[[Focus Attack]]: 72.5
 +
:*[[Ki Attack]]: 92.5
 +
:*[[Death Strike]]: 97.5
 +
 
 
======Spellweaving======
 
======Spellweaving======
−
:*
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:*[[Arcane Circle (Spell)]]: 12.5
−
=====Focus=====
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:*[[Gift of Renewal]]: 12.5
−
* All Bushido: 50
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:*[[Attunement]]: 12.5
−
* All Chivalry: 50
+
:*[[Nature's Fury]]: 12.5
−
* All Magery: 40
+
:*[[Immolating Weapon]]: 22.5
−
* All Necromancy: 40
+
:*[[Reaper Form]]: 36.5
−
* All Ninjitsu: 50
+
:*[[Ethereal Voyage]]: 36.5
−
* All Spellweaving: 50
+
:*[[Arcane Empowerment]]: 36.5
 +
:*[[Summon Fey]]: 50.5
 +
:*[[Summon Fiend]]: 50.5
 +
:*[[Gift of Life]]: 50.5
 +
:*[[Essence of Wind]]: 64.5
 +
:*[[Dryad Allure]]: 64.5
 +
:*[[Word of Death]]: 92.5
 +
 
 +
======Mysticism======
 +
:*[[Healing Stone]] & [[Nether Bolt]]:12.5
 +
:*[[Enchant]] & [[Purge Magic]]:20.5
 +
:*[[Eagle Strike]] & [[Sleep]]:32.5
 +
:*[[Animated Weapon]] & [[Stone Form]]:45.5
 +
:*[[Mass Sleep]] & [[Spell Trigger]]:57.5
 +
:*[[Bombard]] & [[Cleansing Winds]]:70.5
 +
:*[[Hail Storm]] & [[Spell Plague]]:82.5
 +
:*[[Nether Cyclone]] & [[Rising Colossus]]: 95.5
 +
 
 +
 
 +
 
 
===="Plain English" Version====
 
===="Plain English" Version====
 
* Magery and Necromancy spells require 20 skill points above the minimum requirement to be cast 50% of the time, and 40 skill points above the minimum requirement to be cast 100% of the time.
 
* Magery and Necromancy spells require 20 skill points above the minimum requirement to be cast 50% of the time, and 40 skill points above the minimum requirement to be cast 100% of the time.
−
* Chivlary spells requires 25 skill points above the minimum requirement to be cast 50% of the time, and 40 skill points above the minimum requirement to be cast 100% of the time.
+
* Chivlary spells requires 25 skill points above the minimum requirement to be cast 50% of the time, and 50 skill points above the minimum requirement to be cast 100% of the time.
 
* Bushido, Ninjitsu, and Spellweaving spells require 12.5 skill points above the minimum requirement to be cast 50% of the time, and 37.5 skill spoints above the minimum requirement to be cast 100% of the time.
 
* Bushido, Ninjitsu, and Spellweaving spells require 12.5 skill points above the minimum requirement to be cast 50% of the time, and 37.5 skill spoints above the minimum requirement to be cast 100% of the time.
 
* All minimum requirements except for magery are listed in game. Magery minimum requirements can be found on UO.com: http://guide.uo.com/magic.html
 
* All minimum requirements except for magery are listed in game. Magery minimum requirements can be found on UO.com: http://guide.uo.com/magic.html
 +
 +
[[Category:Directory]]

Latest revision as of 19:55, 8 November 2016

Spellcasting

It should be noted that the casting focus referred to in the discussion below is not the skill, Focus.

Chance to Cast

The following information is gathered from UO Developer Wilki's statements on the Stratics message boards.

  • Chance to Cast = ( ( Skill - ( Difficulty - ( Casting Focus / 2 ) ) ) / Casting Focus )%
  • Chance to Cast can never be negative, nor over 100%.
  • The Minimum Skill Requirement to cast a spell exists two ways:

Definitions

  • Skill: The caster's skill level.
  • Casting Focus: A predetermined value that defines how wide the "window" is between 0-100%, centered on the difficulty value.
  • Difficulty: the point where you have 50% to succeed.
  • Minimum Requirement: Minimum skill level required before spell can be cast (even if the chance to cast is above 0).

Values

Casting Focus
Difficulty

Minimum skill need for 50% success chance to cast.

Bushido
Chivalry
Magery
Necromancy
Ninjitsu
Spellweaving
Mysticism


"Plain English" Version

  • Magery and Necromancy spells require 20 skill points above the minimum requirement to be cast 50% of the time, and 40 skill points above the minimum requirement to be cast 100% of the time.
  • Chivlary spells requires 25 skill points above the minimum requirement to be cast 50% of the time, and 50 skill points above the minimum requirement to be cast 100% of the time.
  • Bushido, Ninjitsu, and Spellweaving spells require 12.5 skill points above the minimum requirement to be cast 50% of the time, and 37.5 skill spoints above the minimum requirement to be cast 100% of the time.
  • All minimum requirements except for magery are listed in game. Magery minimum requirements can be found on UO.com: http://guide.uo.com/magic.html
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