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Age of AI — a browser-based multiplayer RTS inspired by Age of Empires. Open source, made with AI. Playable in English, Portuguese & Spanish.

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# Age of AI

### 🌍 Playable in 🇺🇸 English · 🇧🇷 Português · 🇪🇸 Español

A **browser-based multiplayer real-time strategy (RTS)** game inspired by the classics of the genre (Age of Empires / Age of Mythology): resource gathering, base building, advancing through the ages, training units, and combat. All content is original — art and soundtrack generated by AI, with custom code and balancing. An **open source** project, made for fun with the help of AI.

🎮 **Play now:** **[playageofai.com](https://playageofai.com)**
*(live demo — may be offline when the server isn't running)*

> Runs 100% in the browser, on an isometric 2D Canvas. No downloads, no plugins.

🌍 **Languages:** the whole game — menus, in-game HUD, and messages — is available in **English, Portuguese, and Spanish**. It's auto-detected by your region and can be switched anytime from the in-game Options menu (the gear icon).

## Requirements

- Node.js **20+**
- npm 10+

## Running locally

```bash
npm install

# Terminal 1 — server (WebSocket on port 8080)
npm run dev:server

# Terminal 2 — client (Vite on port 5199)
npm run dev:client
```

Windows shortcut: double-click **`iniciar.bat`** — it installs dependencies (first time), starts the server and client, and opens the game in your browser.

Open `http://localhost:5199` in **two or more tabs/machines** (2 players minimum) — or play solo against a **bot** (add an AI opponent in the room). Create a room, mark yourself "Ready", and the host starts the match.

## Hosting over the internet

You can expose the game publicly with a Cloudflare Tunnel (HTTPS, no need to open a port on your router). There are two ways:

- **Quick (temporary link):** double-click **`jogar-online.bat`** → generates a `https://…trycloudflare.com` link (changes each run).
- **Fixed domain (production mode):** run **`configurar-dominio.bat`** once, then use **`jogar-online-fixo.bat`** → serves the pre-built game on your own domain, always at the same address.

Full walkthrough (including hosting on a 24/7 Android phone via Termux) in **[DEPLOY.md](DEPLOY.md)**.

## Other commands

```bash
npm run typecheck   # type-check server + client
npm run build       # production build of the client (client/dist)
npm run smoke       # E2E test: starts the server and simulates a match with 2 WebSocket clients
```

## Architecture

```
shared/   Shared contract (pure TypeScript, no dependencies)
          ├─ types.ts      — entity and snapshot types
          ├─ constants.ts  — balancing (costs, HP, speeds, map, ticks)
          └─ protocol.ts   — ClientMessage/ServerMessage messages (JSON over WebSocket)

server/   Node.js + TypeScript + ws backend — AUTHORITATIVE SERVER
          ├─ HTTP: serves the built client (client/dist) in production
          ├─ Lobby: rooms, ready-check, chat, host migration
          └─ Simulation: 10 ticks/s loop, A* pathfinding,
             state machines (gather → drop-off, building, combat),
             all commands validated on the server

client/   Vite + TypeScript + Canvas 2D frontend (dimetric isometric 2:1)
          ├─ DOM screens: name → lobby → room → game → game over
          ├─ Sprite rendering (AI-generated art) + interpolation between snapshots
          └─ HUD: resources, population, minimap, selection and action panels
```

### Technical decisions

- **WebSocket (`ws`)** for real-time bidirectional communication in the browser.
- **Authoritative server**: the client only sends *intents* (`move`, `gather`, `build`, `train`, `attack`…); all simulation and validation happen on the server — a modified client can't affect the game state.
- **Full snapshots at 5 Hz** with visual interpolation: simple, robust (a dropped message can't corrupt state), and sufficient for the match size.
- **Monorepo with a `shared` package**: a single place defines the protocol and balancing; server and client never diverge silently.

## How to play

| Action | Control |
|---|---|
| Select | Left click / box drag (Shift adds) |
| Contextual command | Right click (move, gather, attack, build) |
| Camera | WASD / arrows, middle-button drag, wheel = zoom |
| Center on Town Center | H |
| Options (volume, resolution, language) | gear icon in the corner |
| Chat | Enter |
| Cancel selection/placement | Esc |

- **Resources**: food, wood, gold, stone — villagers gather and drop them off at the Town Center.
- **Ages**: advance by constructing buildings and gathering resources, unlocking new units and structures.
- **Victory**: destroy all enemy Town Centers.

## Contributing

Contributions are **very welcome** — this is a hobby project, open to anyone who wants to help make it better. Open an *issue* with ideas/bugs or send a *pull request*. 🙂

> Note: the source-code comments are currently written in Portuguese. All identifiers (variables, functions, types) are in English, and the docs (this README + DEPLOY.md) are in English.

## License

[MIT](LICENSE) — use, modify, and share freely.

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