e62c49434c
Implements PF2e as an alternative game system alongside D&D 5e/5.5e. Settings modal "Game System" selector switches conditions, bestiary, stat block layout, and initiative calculation between systems. - Valued conditions with increment/decrement UX (Clumsy 2, Frightened 3) - 2,502 PF2e creatures from bundled search index (77 sources) - PF2e stat block: level, traits, Perception, Fort/Ref/Will, ability mods - Perception-based initiative rolling - System-scoped source cache (D&D and PF2e sources don't collide) - Backwards-compatible condition rehydration (ConditionId[] → ConditionEntry[]) - Difficulty indicator hidden in PF2e mode (excluded from MVP) Closes dostulata/initiative#19 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
39 lines
1.2 KiB
TypeScript
39 lines
1.2 KiB
TypeScript
import { proficiencyBonus } from "./creature-types.js";
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export interface InitiativeResult {
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readonly modifier: number;
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readonly passive: number;
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}
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/**
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* Calculates initiative modifier and passive initiative from creature stats.
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* Returns undefined for combatants without bestiary creature data.
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*/
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export function calculateInitiative(creature: {
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readonly dexScore: number;
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readonly cr: string;
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readonly initiativeProficiency: number;
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}): InitiativeResult {
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const dexMod = Math.floor((creature.dexScore - 10) / 2);
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const pb = proficiencyBonus(creature.cr);
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const modifier = dexMod + (creature.initiativeProficiency ?? 0) * pb;
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return { modifier, passive: 10 + modifier };
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}
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/**
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* Returns the PF2e initiative result directly from the Perception modifier.
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* No proficiency bonus calculation — PF2e uses Perception as-is.
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*/
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export function calculatePf2eInitiative(perception: number): InitiativeResult {
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return { modifier: perception, passive: perception };
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}
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/**
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* Formats an initiative modifier with explicit sign.
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* Uses U+2212 (−) for negative values.
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*/
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export function formatInitiativeModifier(modifier: number): string {
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if (modifier >= 0) return `+${modifier}`;
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return `\u2212${Math.abs(modifier)}`;
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}
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