148 lines
6.8 KiB
Markdown
148 lines
6.8 KiB
Markdown
# Super Auto Pets: The Board Game — Online
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A web app for playing the Super Auto Pets board game remotely. 1v1 for now;
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the engine is built to grow to more players. Play a friend by room code, or
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play solo against a computer opponent (easy / medium / hard).
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## Stack
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- **Backend**: Go (stdlib-first). Pure game engine in `internal/game`,
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WebSocket sync via `coder/websocket`, persistence as JSON blobs in SQLite
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(`modernc.org/sqlite`, no cgo).
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- **Frontend**: React + Vite + TypeScript in `web/`. DOM/CSS card rendering
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and battle animations.
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- **Tasks**: [mise](https://mise.jdx.dev) (`mise.toml`).
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## Quick start
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```sh
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mise run install-web # once: npm install
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mise run serve # build frontend + server, run on :8080
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```
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Open http://localhost:8080, host a game, and join from another browser (or
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incognito window) with the 5-letter code.
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### Development
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```sh
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mise run dev # Go server on :8080 + Vite hot reload on :5173
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mise run test # Go tests (game engine)
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mise run check # go vet + frontend type-check
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```
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During development open the Vite URL (http://localhost:5173); it proxies
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`/api` (including the WebSocket) to the Go server.
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## Configuration
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Set via environment or a `.env` file (see `.env.example`):
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| Variable | Default | Purpose |
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| ------------ | ---------- | ------------------------------------ |
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| `DATA_DIR` | `data` | Directory holding the SQLite DB |
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| `PORT` | `8080` | HTTP port |
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| `STATIC_DIR` | `web/dist` | Built frontend to serve |
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## Rules implemented
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Six rounds, each with its own shop tier deck. Per round:
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1. **Shop** — each player has 3 gold and players alternate actions: **buy**
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one of 4 face-up cards (1 gold — the only action that costs anything);
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**sell** any number of hand cards for free (each becomes an 🍎 apple, +1
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power food, and Sell effects fire); or **trade in** 3 same-suit pets (the
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Triple action, also free) to pick 1 of the top 2 cards of the next tier's
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deck — Triple effects fire on the traded cards and the received pet's Buy
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effect fires. **Passing** is a final action, only legal at 5 pets or
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fewer: it forfeits remaining gold and ends that player's shopping for the
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round. The shop closes once everyone has passed.
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2. **Arrange** — Battle Prep effects fire first (e.g. Giraffe hands out
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apples), then players secretly order their decks. Food cards apply to the
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next pet after them; trailing foods are wasted. A pet only benefits from
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its last-applied **perk** (e.g. Honey, Garlic).
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3. **Battle** — automatic stack machine. Cards reveal off the top of each
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deck until a pet is in play. Play effects fire on reveal (rocks roll a d6
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with faces 0/0/1/1/2/2 and hit the opposing pet before the clash; Skunk
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strips foods; Wolverine steals apples; Chili mills the enemy deck). The
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two pets simultaneously deal their full power to each other as damage
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markers; a pet with markers ≥ power faints (attack never drops while
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wounded). Faint effects push summons onto either deck, recycle apples
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(Dodo), set aside delayed/recurring/conditional rock volleys (Badger,
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Blowfish, Snake, Crocodile), raise auras (Turkey, Mammoth), or arm a
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team shield (Turtle). Survivors that took damage fire Hurt effects
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(Peacock, Camel, Gorilla). Shields (Turtle/Gorilla/Melon) block whole
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hits, Garlic shaves 1 per attack, and Scorpion KOs anything its clash
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attack manages to hurt. Hippo heals when enemies faint; Rhino rocks each
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enemy pet as it's played. A clash that changes nothing ends the battle
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as a stalemate draw. Last player able to field a pet wins: 1 trophy for
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rounds 1–5, 2 for round 6. Draws award nothing.
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Apples and bees are **temporary**: they leave your deck after the battle.
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Most trophies after round 6 wins.
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## Packs
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Two card packs are playable, chosen by the host in the lobby (a third,
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Unicorn, is stubbed for later). Each pack is six tiers, one per round, and
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every pet ships as two copies.
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### Turtle pack
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| Tier | Pets | Food |
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| ---- | ---- | ---- |
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| 1 | Ant, Cricket, Duck, Otter, Mosquito, Fish | — |
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| 2 | Worm, Flamingo, Peacock, Swan, Rat, Spider | Honey |
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| 3 | Dog, Dolphin, Giraffe, Camel, Sheep, Dodo, Badger | Garlic |
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| 4 | Squirrel, Turtle, Rooster, Bison, Blowfish, Skunk, Hippo | Pineapple |
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| 5 | Monkey, Rhino, Crocodile, Scorpion, Seal, Shark, Turkey | Chili |
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| 6 | Gorilla, Fly, Leopard, Mammoth, Cat, Snake, Wolverine | Melon |
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### Golden pack
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| Tier | Pets | Food |
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| ---- | ---- | ---- |
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| 1 | Groundhog, Pied Tamarin, Chipmunk, Cone Snail, Bulldog, Opossum | — |
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| 2 | Black-Necked Stilt, Lizard, Hercules Beetle, Stoat, Desert Rain Frog, Honduran White Bat | — |
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| 3 | Guinea Fowl, Surgeon Fish, Osprey, Anteater, Bear, Royal Flycatcher, Flea | Avocado |
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| 4 | Saiga Antelope, Vaquita, Poison Dart Frog, Manta Ray, Slug, Cockatoo, Manatee | Potato |
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| 5 | Nyala, Nurse Shark, Giant Isopod, Blue-Ringed Octopus, Raccoon, Fire Ant, Macaque | Durian |
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| 6 | Highland Cow, Wildebeest, Grizzly Bear, Catfish, Komodo, Bird of Paradise, German Shepherd | Tomato |
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The Golden pack adds mechanics the Turtle pack doesn't have:
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- **Trumpets** — an ephemeral battle resource pets earn and spend mid-fight.
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- **Golden Retriever** — once per battle, a side that runs out of cards but
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still holds Trumpets fields one, its power equal to those Trumpets.
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- **Avocado** — a persistent set-aside token you can discard in place of gold.
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- **Nurse Shark** — the one interactive battle moment: the fight pauses and
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asks how many Trumpets to spend on rocks (the bot answers with a fixed
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policy, so simulated rollouts stay valid).
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- **Cockatoo** — a shop-time reveal, plus Manta Ray's free first buy,
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Blue-Ringed Octopus' per-buy apples, and more.
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## Layout
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```
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cmd/server/ entrypoint
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internal/game/ rules engine (pure, fully tested)
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internal/ai/ computer opponent (decides from a player View only)
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internal/server/ HTTP + WebSocket rooms; drives bot turns
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internal/store/ SQLite persistence
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internal/env/ .env loading
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web/ React frontend
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```
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## The computer opponent
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Any seat can be a bot (`Player.IsBot`); humans and bots are interchangeable
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to the engine, which is what will let future >2-player games mix them
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freely. The AI in `internal/ai` never touches the `Game` — it decides from a
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`game.View`, the same per-player state a human client is sent, plus a
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persisted memory of public observations (battle lineups, the event log, shop
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row changes). It cannot see your deck order, hidden trade picks, or the
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shuffled shop decks. It scores candidate moves by Monte-Carlo battle
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rollouts (`game.SimulateBattle`) against sampled guesses of your deck and
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ordering, blended with a long-term deck-value heuristic; difficulty tunes a
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softmax over the scored moves plus the rollout budget.
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