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initiative/README.md
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Add encounter difficulty indicator (5.5e XP budget)
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>
2026-03-27 22:55:48 +01:00

2.8 KiB

Encounter Console

A local-first initiative tracker and encounter manager for tabletop RPGs (D&D 5e / 2024). Runs entirely in the browser — no server, no account, no data leaves your machine.

What it does

  • Initiative tracking — add combatants (batch-add from bestiary, custom creatures with optional stats), roll initiative (manual or d20), cycle turns and rounds
  • Encounter state — HP, AC, conditions, concentration tracking with visual status indicators
  • Bestiary integration — import bestiary JSON sources, search creatures, and view full stat blocks
  • Player characters — create reusable player character templates with name, AC, HP, level, color, and icon; search and add them to encounters with pre-filled stats; manage (edit/delete) from a dedicated panel
  • Encounter difficulty — live 3-bar 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
  • Undo/redo — reverse any encounter action with Undo/Redo buttons or keyboard shortcuts (Ctrl+Z / Ctrl+Shift+Z, Cmd on Mac); history persists across page reloads
  • Import/export — export the full encounter state (combatants, undo/redo history, player characters) as a JSON file or copy to clipboard; import from file upload or pasted JSON with validation and confirmation
  • Persistent — encounters survive page reloads via localStorage; bestiary data cached in IndexedDB; player characters stored independently

Prerequisites

  • Node.js 22+
  • pnpm 10.6+

Getting Started

pnpm install
pnpm --filter web dev

Open http://localhost:5173.

Scripts

Command Description
pnpm --filter web dev Start the dev server
pnpm --filter web build Production build
pnpm test Run all tests (Vitest)
pnpm check Full merge gate (knip, biome, typecheck, test, jscpd)

Project Structure

apps/web/          React 19 + Vite — UI components, hooks, adapters
packages/domain/   Pure functions — state transitions, types, validation
packages/app/      Use cases — orchestrates domain via port interfaces
data/bestiary/     Bestiary index for creature search
scripts/           Build tooling (layer boundary checks, index generation)
specs/             Feature specifications (spec → plan → tasks)

Architecture

Strict layered architecture with enforced dependency direction:

apps/web (adapters)  →  packages/application (use cases)  →  packages/domain (pure logic)

Domain is pure — no I/O, no randomness, no framework imports. Layer boundaries are enforced by automated import checks that run as part of the test suite. See CLAUDE.md for full conventions.