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# 🌐 Building a Decentralized MMO with IPFS and WebRTC  
*How PeakeCoin’s Peake RPG uses IPFS to revolutionize browser-based gaming*

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## ⚙️ Intro

The **PeakeIPFSClient** class powers a decentralized real-time multiplayer RPG built entirely in the browser. Using [js-IPFS](https://github.com/ipfs/js-ipfs) and WebRTC, it allows players to explore a persistent, trustless world — no central servers required.

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## 🧠 Features of `PeakeIPFSClient`

### ✅ Decentralized Identity and Player Verification
Each player generates:
- **ECDSA keys** for cryptographic identity  
- **RSA keys** for encrypted whispers  
- **Signed character data** to verify their identity  
This means no one can impersonate your character — even across restarts.

```js
await this.initializeCryptoKeys();
await this.initializeIdentityVerification();
```

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### 📡 Real-Time Communication via PubSub

The client subscribes to:
- `peake-rpg-global` for global events  
- `peake-rpg-room-5,5`, `peake-rpg-room-6,5`, etc., for local player movement and chat

```js
await this.ipfs.pubsub.subscribe('peake-rpg-global', ...)
await this.subscribeToRoom('5,5');
```

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### 🗃️ Persistent Saves with IPFS

Game state is:
- Saved with a **CID** (Content Identifier)
- Optionally **pinned** to services like Pinata or Web3.storage
- Stored in `localStorage` for resume

```js
const { cid } = await this.ipfs.add(JSON.stringify(gameData, null, 2));
localStorage.setItem('peake-rpg-ipfs-hash', cid.toString());
```

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### 🔐 Whisper Chat and Encrypted Messages

Messages are encrypted with player public keys. Unverified players get warnings and limited trust-based interaction.

```js
await this.sendWhisper(targetPlayer, message, location, true);
```

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### 🧠 Conflict Resolution

Multiple devices? No problem.

If save states conflict, a `conflictResolutionStrategy` like `'timestamp'` or `'manual'` determines which to keep.

```js
this.conflictResolutionStrategy = 'timestamp';
```

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### 🌍 World State Sync

The `startPeriodicSync()` method:
- Saves game state every 30 seconds  
- Triggers random events  
- Cleans up disconnected peers  
- Broadcasts player stats  

```js
this.saveGameState();
this.triggerWorldEvent();
```

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## 🔑 IPFS Commands (In-Game Console)

| Command | Description |
|--------|-------------|
| `connect Name` | Connects to the IPFS swarm |
| `whisper John Hello` | Sends private message |
| `trade Alice sword` | Sends a trade request |
| `save` | Saves state to IPFS |
| `load Qm123...` | Loads a saved game |
| `snapshot-create` | Shares public character profile |
| `verify-player John` | Requests identity challenge |
| `trust-level low` | Blocks unverified interaction |

These commands interact with the `window.ipfsClient` instance from anywhere in the game.

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## 📸 Snapshots & Reputation

Players can publish public character snapshots, like a profile:
```js
await window.ipfsClient.createPublicSnapshot();
```

Others can view with:
```bash
snapshot-view Alice
```

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## 🔗 Trust, Not Servers

This approach offloads:
- Storage to **IPFS**
- Authentication to **crypto signatures**
- Sync to **PubSub topics**

Every player becomes a node in the network.

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## 💬 Try It Live

This is part of the **PeakeCoin** project — a Hive blockchain-based ecosystem.

Check out our open-source RPG and explore decentralized gaming:
👉 https://geocities.ws/peakecoin/

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*Built with 💾 JavaScript, IPFS, and Maryland pride.*