Formulas and Game Mechanics

Revision as of 15:50, 22 February 2007 by JC the Builder (Talk | contribs)

Spellcasting

Chance to Cast

( Gathered from Wilki's statements in http://boards.stratics.com/php-bin/uo/showflat.php?Cat=&Number=7087151 )

  • ChanceToCast = ( ( Skill - ( Difficulty - ( Focus / 2 ) ) ) / 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 Everything Else: MinimumRequirement = ( ( Difficulty - ( Focus / 2) ) + ( ( Focus * 5 ) / 20 ) )

Definitions

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

Values

Difficulty
Bushido
Chivalry
  • Cleanse by Fire: 30
  • Close Wounds: 25
  • Consecrate Weapon: 40
  • Dispel Evil: 60
  • Divine Fury: 50
  • Enemy of One: 70
  • Holy Light: 80
  • Noble Sacrifice: 90
  • Remove Curse: 30
  • Sacred Journey: 40
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
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.
  • 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