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11. Damage Types & Resistances

Date: 2025-11-22

Status

Accepted

Context

Combat requires differentiating between types of damage (Fire, Slashing, etc.) to support Resistances, Vulnerabilities, and Immunities.

Decision

We introduced a DamageType enum and updated the IHitPoints.TakeDamage method.

  • DamageType Enum: Includes standard types (Bludgeoning, Piercing, Slashing, Fire, Cold, etc.).
  • TakeDamage Update: Now accepts DamageType as a parameter.
  • Resistance Logic: StandardHitPoints (or StandardCreature via ICombatStats) checks for resistance/vulnerability before applying damage.
    • Resistance: Halves damage.
    • Vulnerability: Doubles damage.
    • Immunity: Negates damage.

Consequences

  • Damage calculations are now type-aware.
  • DamageTakenEventArgs includes the DamageType for event subscribers (UI, logs).
  • Future features like "Resistance to Non-Magical Attacks" can be built on this enum.