🌐 Building a Decentralized MMO with IPFS and WebRTC

How PeakeCoin’s Peake RPG uses IPFS to revolutionize browser-based gaming

⚙️ Intro

The PeakeIPFSClient class powers a decentralized real-time multiplayer RPG built entirely in the browser. Using js-IPFS and WebRTC, it allows players to explore a persistent, trustless world — no central servers required.

🧠 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.

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

📡 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

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

🗃️ 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

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

🔐 Whisper Chat and Encrypted Messages

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

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

🧠 Conflict Resolution

Multiple devices? No problem.

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

this.conflictResolutionStrategy = 'timestamp';

🌍 World State Sync

The startPeriodicSync() method:

• Saves game state every 30 seconds
• Triggers random events
• Cleans up disconnected peers
• Broadcasts player stats

this.saveGameState();
this.triggerWorldEvent();

🔑 IPFS Commands (In-Game Console)

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

📸 Snapshots & Reputation

Players can publish public character snapshots, like a profile:

await window.ipfsClient.createPublicSnapshot();

Others can view with:

snapshot-view Alice

🔗 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.

💬 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/

Built with 💾 JavaScript, IPFS, and Maryland pride.