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Promoted from ~/claude/ideas/rimlike after a single multi-hour brainstorm
session. memory.md distilled from plan.md; companion design / architecture /
ui / art docs preserved under docs/.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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# memory — rimlike
Durable memory for this project. Read at session start, update before session end. Date format: `YYYY-MM-DD`.
A 2D, tile-based **cute-farming-RPG-meets-colony-sim** — Rimworld DNA, Going Medieval × Stardew lodestars — shaped for mobile and handheld. Promoted from `~/claude/ideas/rimlike` on 2026-05-10 after a single deep brainstorm session. Realistic MVP timeline: **3–6 months solo**.
## How to read this project
`memory.md` is the index of decisions and open questions. The deep specs live alongside in `docs/`:
| File | Contents |
|---|---|
| [`docs/design.md`](./docs/design.md) | Game design — core loop, simplifications, skills, statuses, mood, weather, stockpiles, production, combat, death/burial, storyteller corpus |
| [`docs/architecture.md`](./docs/architecture.md) | Tech — pawn AI / job system, time/tick model, Godot 4 engine layout, TileMap split, all subsystems (mood, lighting, rooms, hauling, production, combat, storyteller) |
| [`docs/ui.md`](./docs/ui.md) | Touch UX — work-priority matrix, stockpile/container screens, mood/lighting/rooms cues, combat banners, storyteller event UI, screens still to design |
| [`docs/art.md`](./docs/art.md) | Owned assets (ElvGames bundle primary, Ventilatore secondary), license, autotile gotcha, audit list, candidates kept for record |
When working on a feature, read `memory.md` first, then the relevant `docs/` file(s).
## Decisions & rationale
Distilled from the brainstorm. Each lock has a "why" — change with deliberate intent.
### Pillars
| Decision | Choice | Why |
|---|---|---|
| **View** | Top-down, grid-aligned tilemap | Closest to Rimworld feel; matches owned tilesets. |
| **Primary platforms** | iOS + Android touch, then Steam Deck / ROG Ally gamepad. Desktop falls out for free. | Mobile is the hard constraint; Deck inherits. |
| **Ambition** | itch.io + TestFlight release. Real artifact, small audience. | Drives engine choice; no app-store polish-tax. |
| **Engine** | Godot 4 (GDScript) | 2D-first, free, exports everywhere we need, fast iteration. |
| **Tile size / style** | 16×16 pixel art, **cute-farming-RPG primary** (ElvGames bundle), Ventilatore as medieval accent | ElvGames "Ultimate Farming RPG" Humble bundle owned (~2.8 GB, 70+ packs). Tone: Stardew × Going Medieval × Rimworld. |
| **Setting** | Medieval fantasy with cute palette | Owned-art alignment + clearer scope (no electricity / hydroponics / energy weapons) + underexplored on mobile. |
| **Run shape** | Open-ended sandbox, autosave, persistent world | Player picks up where they left off. |
| **Session length** | 5–15 min target | Drives every UI and pacing choice. |
| **Default speed** | Fast (5×), with auto-pause on event | 1 in-game day ≈ 5 min real time. Solves the "watch a pawn walk for 60s" problem; 1× exists for combat / fine work. |
| **Goal scaffolding** | Light storyteller prompts | Soft, dismissible nudges give each short session shape without forcing scenarios. |
| **Combat** | Realtime with auto-pause on threat | Rimworld-feel; touch-friendly. |
| **Health** | Single HP per pawn + status effects (Bleeding/Sick/Tired/Hungry/Wet/Cold/Downed/...) | ~80% of the drama for ~5% of Rimworld's health-system code. |
| **Scale** | 3–6 pawns, 30×30 to 60×60 tile maps | Readable on a phone; cheap to simulate. |
| **Priority levels** | 5 (Critical / High / Normal / When idle / Off) | Matches Rimworld + Going Medieval contract. |
| **Failure state** | Ghost colony — no game over; storyteller drops wanderer in 3–5 days | Mobile-friendly; preserves player investment. |
### Architecture (tech)
- **Sim tick 20 Hz, render 60 Hz, decoupled.** Pawn positions lerp between sim ticks. (`docs/architecture.md` Time / tick model)
- **Pawn AI: 5-layer pipeline** (Decision → WorkProvider → Job + JobRunner → Status interrupts → Player overrides). Slimmer than Rimworld's ThinkTree. ~800–1500 LOC GDScript for full MVP.
- **TileMap layers**: 0 Terrain · 1 Floor · 2 Wall · 3 Designation · 4 Roof · 5 Fog. Furniture / Pawn / Item / EffectFX as scene-instanced entities (not TileMap).
- **Pathfinding**: `AStarGrid2D` (built-in), updated on wall/door/furniture changes.
- **No background simulation** — app backgrounded = sim paused. Avoids "lost colony to a raid while at work."
- **Save format**: between sim ticks only; JobRunner mid-toil state round-trips from day one.
### Game design
- **5 skills** (Manual Labor / Crafting / Cooking / Medicine / Combat), 0–10 each, level by use, multiplicative speed/quality bonus. Skills modify duration and quality, never permission.
- **9 work categories** (Construction / Mining / Hauling / Cleaning / Crafting / Cooking / Plant / Doctor / Combat). 5-level priority matrix per pawn.
- **Storage**: floor zones AND independent crate furniture (4 stacks each), unified by `StorageDestination` interface. **16 filter chips** (Wd/St/Ir/Cu/Ag/Au/Cl/Veg/Mt/Gr/Ck/Md/Tl/Wp/Ar/Co), 5 priorities with Rimworld flow semantics. One stack per tile, one type per tile.
- **Production**: 2-step where medieval-sense (Iron→Ingot→Weapon, Grain→Flour→Bread); 1-step otherwise. 5 workbenches (Carpenter, Smelter, Smithy, Cooking hearth, Millstone), ~22 recipes. Full Rimworld bill semantics (one-shot count / forever / until-N + ingredient-quality filter + skill threshold).
- **Quality system** (Shoddy/Normal/Excellent/Masterwork/Legendary) on every crafted item; multiplicative stat bonus. Quality from crafter skill + RNG only (inputs are just resources).
- **Mood**: ~13 thoughts (data-driven registry, mix persistent + event-driven). Soft breaks at sustained mood < 25 for 30 in-game min — Sulking or Wandering, recover at mood ≥ 35.
- **Lighting** (real shader at night), **auto-detected rooms** (named by furniture, scored for beauty + dirtiness), **dirtiness + Cleaning** (8th work category), **beauty score** with Quality multiplier.
- **Roofing**: indoor = Layer-4 Roof flag, sim-data only (no rendering, just an indoor tint on floors). Auto-roof when walls enclose ≤8 cells (BFS); No-Roof designation for courtyards. Plants don't grow indoors.
- **Weather**: 4 types (Clear / Rain / Storm / Cold snap), daily roll, season-weighted. Wet status accumulates outside in rain, decays indoors. 4 seasons × 12 days = 48-day year.
- **Combat**: 3 weapons (sword/axe/bow), 3 armor slots (helm/cuirass/boots). Walls + trees provide cover. Two-roll resolution (hit, then damage with armor reduction). Downed-then-rescue death model; doctors auto-prioritize. Combat=Off "defends if cornered, won't volunteer." Friendly fire ON.
- **Death / corpses**: Both burial AND cremation. Graveyard = special stockpile (Corpses-only); pawns dig graves, place permanent grave markers (tap → deceased pawn-detail). Cremation pyre = furniture with single recipe (1 corpse + 5 wood). Corpses decay 0–50 fresh / 50–100 rotting (no butcher) / 100 rotted.
- **Storyteller**: 25 prompts written in `docs/design.md`. Daily 6am roll, weighted pool, per-category cooldowns, tension model alternates quiet/threat per Tynan Sylvester pacing. Ambient banner for low-stakes, modal auto-pause for choice events.
### Touch UX
- **Bottom-sheet menus** instead of right-side panels. **Long-press** = inspect/context. **Tap world** = select. Speed/pause buttons fixed top.
- **Work-priority matrix**: 9 columns × N pawns, sticky pawn-name column, horizontal scroll on phone. Tap-to-cycle priority, long-press for 5-chip picker, swipe column for bulk-set. Per-pawn and per-job views layered on top.
- **Stockpile/container UI**: 4×4 chip grid for the 16 filter categories; same UI for floor zones and crates.
- **Storyteller events**: ambient banners for nudges/seasonal/lore; modal auto-pause for wanderer/threat/disease/milestone. Events log + "while you were away" digest at resume.
- **Indoor tint** marks "this is inside" without needing roof rendering — matches Stardew/Rimworld convention.
### Art strategy
- **ElvGames "Ultimate Farming RPG" Humble bundle** is the primary art (`/mnt/d/godot/assets/humble set new/`, ~2.8 GB, 70+ packs, all 16×16, ElvGames license: commercial OK with credit).
- **Ventilatore Fantasy Tileset Complete Bundle** stays as medieval accent for biome variety / decorative props / animated water.
- Mana Seed series considered but **dropped** from buy plan (the bundle covers what we'd planned).
- **Authoring still required**: designation overlays (~2 hrs custom), possibly autotile bits on bundle wall sheets, possibly wolf sprite, possibly grave marker.
## Open questions / TODOs
### Audit / unblock-the-prototype action items
These are concrete checks to run before serious construction begins. Total ~75 min.
- [ ] **Aesthetic harmony test** — open one tile from ElvGames Forest 4 Seasons + one from Ventilatore + view side-by-side. Decide whether they mesh (use both) or clash (drop Ventilatore from active use). ~15 min.
- [ ] **ElvGames autotile audit** — count corner / T-junction / cap pieces in `Houses Tileset 2 Seasons/FG_Houses.png` and `Fortress Tileset 2 Seasons/FG_Fortress.png`. ≥16 wall variants per material → autotile is solvable; <8 → fall back to Mana Seed Iconic Homestead ($19.99) or custom-author. ~15–30 min.
- [ ] **Wolf sprite source** — bundle's Animal Sprites pack lacks wolves. Browse EvoMonster Packs 01–15 or Turn-Based RPG Monster packs for a suitable predator. Or plan custom (~few hours pixel art). ~15 min.
- [ ] **Grave marker source** — Retro Graveyard 16×16 (Tier 3) probably has it; verify. ~10 min.
- [ ] **License compilation** — maintain credits string for every pack used (ElvGames + Ventilatore + any others). Display in game's credits screen. Confirm specific terms per pack before any commercial release.
### Design topics still open
- [ ] **Onboarding / first 60 seconds**: mobile-specific. Don't copy Rimworld's tutorial.
- [ ] **Touch UI for non-priority screens**: world view, build drawer, alerts, day-summary, pawn detail. See `docs/ui.md` "Screens still to design."
- [ ] **Background time / "while you were away" mechanic** — locked to no background simulation in MVP; revisit if it feels bad in playtest.
- [ ] **Audio direction** — who/where for SFX + ambient track? Bundle has 11 music + 8 SFX packs covering most needs.
- [ ] **Steam Deck input parity** — gamepad-driven cursor, or full menu navigation by D-pad? Probably both.
- [ ] **Localization stance** — English-only for MVP, but architect strings for i18n (already locked in CLAUDE.md).
- [ ] **Pawn name/backstory generation** — hand-curated list vs simple generator.
- [ ] **Naming the game** — "rimlike" is a working title.
- [ ] **Monetization stance** — free? PWYW? Premium?
- [ ] **Tech / research progression** — medieval tech tree shape.
- [ ] **Map / world generation** — fixed seed for slice; procgen later.
### Tunable in prototype (not real "open Qs", just numbers to playtest)
- Sleep mood gradient values (`+5/+0/−2/−5/−8`)
- Wet status thresholds (25 / 60) and accumulation rates
- Season weather weights (Spring/Summer/Autumn/Winter distributions)
- Hit-chance bonuses (skill ×5%, range ×5%, cover 40/20%)
- Bleed-out timer (6 in-game hours)
- Various mood thought magnitudes and decay times
## Vertical slice (MVP target)
Same scope as locked in `~/claude/ideas/rimlike/plan.md`. Realistic timeline 3–6 months solo for an MVP this rich.
- **1 biome** (temperate forest, ElvGames Forest Tileset 4 Seasons; Ventilatore foliage accents).
- **1 map**, ~40×40 tiles, fixed seed for now.
- **3 starting pawns** ("settlers" / "villagers"), each with name + portrait + one-sentence backstory.
- **Verbs**: chop wood, mine stone & ore, build walls/floors/furniture/crates, plant/harvest crops (3–4 types), cook meals (recipes), haul, repair, clean.
- **Needs**: hunger, sleep, mood (~13 distinct thoughts, soft breaks at sustained mood < 25).
- **Status effects**: Hungry, Tired, Bleeding, Sick, Downed, Wet (Damp/Soaked), Cold.
- **Storage**: floor zones AND containers, 16 filter chips, 5 priorities.
- **Quality system** on all crafted items.
- **Lighting** — torches + hearths emit light; visual darkness at night.
- **Rooms** — auto-detected, named by contents, beauty + dirtiness scored.
- **Cleaning** as 8th work category.
- **Day/night cycle**, ~5 min per day at default speed. **Seasons** (Spring/Summer/Autumn/Winter, 12 days each).
- **Weather**: Clear / Rain / Storm / Cold snap.
- **One disaster type**: wolves at night (bandit raids deferred).
- **One storyteller**: random quiet/threat alternation, 25 prompt corpus.
- **Save/load**, autosave on suspend, single slot.
- **Touch UI** end-to-end (no desktop-only gestures).
- **Sound**: minimal — UI clicks, ambient day/night loop, alert sting.
## Session log
### 2026-05-10
- Promoted from `~/claude/ideas/rimlike/` (single multi-hour brainstorm session).
- Scaffolded `projects/rimlike/` from `_templates/project/`. Customized `CLAUDE.md`. Distilled `plan.md` into this `memory.md`. Moved companion files (design / architecture / ui / art) into `docs/`. `git init`, first commit "Initial scaffold". Created Forgejo repo `rimlike` (private), set HTTPS remote, pushed `main`. Archived idea folder to `~/claude/archive/ideas/rimlike/`.
## External references
- **Forgejo repo:** https://git.rdx4.com/megaproxy/rimlike (private)
- **Owned art bundle (primary):** ElvGames "Ultimate Farming RPG" Humble bundle, local at `/mnt/d/godot/assets/humble set new/`. License: ElvGames terms (<https://elv-games.itch.io/terms>). Commercial OK with credit; no NFT/crypto/resale.
- **Owned art bundle (secondary):** Ventilatore Fantasy Tileset Complete Bundle — <https://itch.io/s/117124/the-fantasy-tileset-complete-bundle>
- **Mana Seed catalog (fallback if bundle gaps surface):** <https://seliel-the-shaper.itch.io/>
- **Iconic Homestead (autotile-ready wall fallback, $19.99):** <https://seliel-the-shaper.itch.io/iconic-homestead>
- **Lodestars:** Rimworld (Tynan Sylvester / Ludeon Studios), Going Medieval (Foxy Voxel), Stardew Valley (ConcernedApe).
- **Original brainstorm history:** archived to `~/claude/archive/ideas/rimlike/` after promotion. The session log there captures every decision's rationale.
- **Brainstorming-mode preference:** see `~/.claude/projects/-home-megaproxy-claude-ideas/memory/brainstorm-ask-dont-decide.md` (not directly applicable to projects but captures interaction style).