Difference between revisions of "Formulas and Game Mechanics"

Revision as of 09:30, 20 February 2008

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:
- For Chivalry, Magery, and Necromancy: MinimumRequirement = ( Difficulty - ( Casting Focus / 2 ) )
- For Bushido, Ninjitsu, and Spellweaving: MinimumRequirement = ( ( Difficulty - ( Casting Focus / 2) ) + ( ( Casting Focus * 5 ) / 20 ) )

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

All Bushido: 50
All Chivalry: 50
All Magery: 40
All Necromancy: 40
All Ninjitsu: 50
All Spellweaving: 50

Difficulty

Bushido

Chivalry

Magery

1st Circle: 0
2nd Circle: 15
3rd Circle: 29
4th Circle: 43
5th Circle: 58
6th Circle: 72
7th Circle: 86
8th Circle: 100

Necromancy

Ninjitsu

Spellweaving

"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 40 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

@@ Line 1: / Line 1: @@
 {{tocright}}
 ==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===
-( 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 )%
+* 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:
-** 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 ) )
+** For [[Bushido]], [[Ninjitsu]], and [[Spellweaving]]: MinimumRequirement = ( ( Difficulty - ( Casting Focus / 2) ) + ( ( Casting Focus * 5 ) / 20 ) )
 ====Definitions====
-* Skill: The caster's skill level.
+* 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)
+* Minimum Requirement: Minimum skill level required before spell can be cast (even if the chance to cast is above 0).
 ====Values====
+----
+=====Casting Focus=====
+* All [[Bushido]]: 50
+* All [[Chivalry]]: 50
+* All [[Magery]]: 40
+* All [[Necromancy]]: 40
+* All [[Ninjitsu]]: 50
+* All [[Spellweaving]]: 50
 =====Difficulty=====
 ======Bushido======
-:*
+:* [[Honorable Execution]]: 37.5
+:* [[Counter Attack]]: 52.5
+:* [[Lightning Strike]]: 52.5
+:* [[Confidence]]: 37.5
+:* [[Evasion]]: 72.5
+:* [[Momentum Strike]]: 82.5
 ======Chivalry======
-:* Cleanse by Fire: 30
+:* [[Cleanse by Fire]]: 30
-:* Close Wounds: 25
+:* [[Close Wounds]]: 25
-:* Consecrate Weapon: 40
+:* [[Consecrate Weapon]]: 40
-:* Dispel Evil: 60
+:* [[Dispel Evil]]: 60
-:* Divine Fury: 50
+:* [[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======
 :* 1st Circle: 0
@@ Line 38: / Line 54: @@
 :* 8th Circle: 100
 ======Necromancy======
-:*
+:*[[Curse Weapon]]:
+:*[[Blood Oath]]:
+:*[[Corpse Skin]]:
+:*[[Evil Omen]]:
+:*[[Pain Spike]]:
+:*[[Wraith Form]]:
+:*[[Mind Rot]]:
+:*[[Summon Familiar]]:
+:*[[Animate Dead]]:
+:*[[Horrific Beast]]:
+:*[[Poison Strike]]:
+:*[[Wither]]:
+:*[[Strangle]]:
+:*[[Lich Form]]:
+:*[[Exorcism]]:
+:*[[Vengeful Spirit]]:
+:*[[Vampiric Embrace]]:
 ======Ninjitsu======
 :*
 ======Spellweaving======
 :*
-=====Focus=====
-* All Bushido: 50
-* All Chivalry: 50
-* All Magery: 40
-* All Necromancy: 40
-* All Ninjitsu: 50
-* All Spellweaving: 50
 ===="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.