Damage formula

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There isn't a single, general purpose damage formula, but different types of damage have different means of calculating damage:

Base Damage

• Weapon damage: which covers damage calculation for player weapons, unarmed combat, and throwing.
• Spell damage: Most spells deal damage in dice notation, and deal nD( (Spellpower * multiplier / divisor) + constant). Each spell has its own multiplier, divisor, and constant. See a spell's own page for more details.
  • Certain spells like Airstrike may further be multiplied by external factors.
  • By default, spells check AC and EV. Some may ignore one or the other, or both.
• Poison deals damage over time. The more poison you recieve, the more the poison "stacks", and the faster you take damage.
• Certain effects like Agony, Torment, and flay are percentages of your maximum health.

Damage from monsters is unknown(?), but their maximum damage is displayed on examination.

Other Factors

• To-hit: Determines accuracy (chance to-hit) of an attack. Some attacks can't miss, which is an infinite to-hit.
• Weapon speed: Determines how fast you swing/fire a weapon or fists. Most spells have a delay of 1.0.

Damage Reduction

• Resistances reduce damage of a specific type. Player and monster resistances are not symmetrical.
• Armour class (AC) will reduce most attacks by (0 to AC) damage.
  • Physical attacks in melee are affected by guaranteed damage reduction (GDR), which increase the minimum AC roll.
• Evasion score (EV) determines how likely you are to dodge an avoidable attack completely. See Evasion#To-hit_versus_EV for formulas.
• Shield score (SH) determines how likely you are to block an attack completely. Melee attacks, ranged attacks, and certain projectile-like spells can be blocked. See Shields#Blocking for formulas