ef76b9c90b
Live 3-bar difficulty indicator in the top bar showing encounter difficulty (Trivial/Low/Moderate/High) based on the 2024 5.5e XP budget system. Automatically derived from PC levels and bestiary creature CRs. - Add optional level field (1-20) to PlayerCharacter - Add CR-to-XP and XP Budget per Character lookup tables in domain - Add calculateEncounterDifficulty pure function - Add DifficultyIndicator component with color-coded bars and tooltip - Add useDifficulty hook composing encounter, PC, and bestiary contexts - Indicator hidden when no PCs with levels or no bestiary-linked monsters - Level field in PC create/edit forms, persisted in storage Closes #18 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
101 lines
2.0 KiB
TypeScript
101 lines
2.0 KiB
TypeScript
import type { DomainEvent } from "./events.js";
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import type {
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PlayerCharacter,
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PlayerCharacterId,
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} from "./player-character-types.js";
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import {
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VALID_PLAYER_COLORS,
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VALID_PLAYER_ICONS,
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} from "./player-character-types.js";
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import type { DomainError } from "./types.js";
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export interface CreatePlayerCharacterSuccess {
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readonly characters: readonly PlayerCharacter[];
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readonly events: DomainEvent[];
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}
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export function createPlayerCharacter(
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characters: readonly PlayerCharacter[],
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id: PlayerCharacterId,
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name: string,
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ac: number,
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maxHp: number,
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color: string | undefined,
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icon: string | undefined,
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level?: number,
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): CreatePlayerCharacterSuccess | DomainError {
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const trimmed = name.trim();
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if (trimmed === "") {
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return {
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kind: "domain-error",
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code: "invalid-name",
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message: "Player character name must not be empty",
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};
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}
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if (!Number.isInteger(ac) || ac < 0) {
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return {
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kind: "domain-error",
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code: "invalid-ac",
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message: "AC must be a non-negative integer",
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};
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}
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if (!Number.isInteger(maxHp) || maxHp < 1) {
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return {
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kind: "domain-error",
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code: "invalid-max-hp",
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message: "Max HP must be a positive integer",
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};
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}
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if (color !== undefined && !VALID_PLAYER_COLORS.has(color)) {
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return {
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kind: "domain-error",
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code: "invalid-color",
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message: `Invalid color: ${color}`,
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};
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}
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if (icon !== undefined && !VALID_PLAYER_ICONS.has(icon)) {
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return {
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kind: "domain-error",
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code: "invalid-icon",
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message: `Invalid icon: ${icon}`,
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};
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}
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if (
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level !== undefined &&
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(!Number.isInteger(level) || level < 1 || level > 20)
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) {
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return {
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kind: "domain-error",
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code: "invalid-level",
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message: "Level must be an integer between 1 and 20",
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};
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}
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const newCharacter: PlayerCharacter = {
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id,
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name: trimmed,
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ac,
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maxHp,
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color: color as PlayerCharacter["color"],
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icon: icon as PlayerCharacter["icon"],
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level,
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};
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return {
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characters: [...characters, newCharacter],
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events: [
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{
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type: "PlayerCharacterCreated",
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playerCharacterId: id,
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name: trimmed,
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},
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],
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};
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}
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