PlayerEngine: Framework for Creating AI Agents in Minecraft

PlayerEngine is a server-side framework that fundamentally changes the approach to creating non-player characters with artificial intelligence in Minecraft. Developed by Goodbird, this project overcomes the limitations of client-side mods, providing a powerful toolkit for equipping custom mobs with the full range of player capabilities.

The project idea emerged from the desire to go beyond simple chatbots and create truly autonomous agents. It's not about making ordinary pigs talk, but about giving developers tools to create creatures that can mine resources, fight, manage inventory, and interact with the game world at the player level.

Core Concept: Player as an Interface

The main idea of PlayerEngine is that "being a player" is considered not as a specific entity type, but as a set of abilities that can be assigned to any mob. By implementing several simple interfaces, your custom mob gains access to:

• Persistent inventory similar to the player's (LivingEntityInventory)
• Ability to interact with the world: break blocks and use items (LivingEntityInteractionManager)
• Advanced navigation and task execution through the powerful Automatone engine

Key Features for Developers

🤖 Transforming Mobs into Agents: Created specifically for modders. Easily convert your own entities into characters with player-like behavior. Don't just reskin standard mobs — give your creations real autonomy.

⛏️ Full World Interaction: NPCs can mine blocks, use tools, and interact with objects. (Note: complex building is not yet supported)

🎒 Game Inventories: Each agent manages its own persistent inventory, enabling complex resource gathering chains, crafting, and tool management.

🧠 Player2 Integration: PlayerEngine perfectly complements Player2 API. Send high-level commands like @get diamond 5 and watch your agent execute a complex task chain to achieve the goal.

🛠️ Reliable Foundation:

• Navigation: Uses Automatone — a fork of the legendary Baritone pathfinding engine
• Task System: Adapts the reliable command system from the ChatClef mod by Player2
• Modularity: Uses Cardinal Components for clean capability attachment, ensuring high compatibility and easy integration

Approach Advantages

Integration: This is a framework for deep systemic interaction. NPCs are no longer just quest givers — they become active participants in the game economy, ecology, and emergent stories.

Safety: PlayerEngine ensures reliability. It provides a deterministic action layer based on game logic that consistently executes high-level goals from language models, including fallback options and deep understanding of the game world.

Creativity: Expands the capabilities of other creators. We're not just demonstrating one cool NPC — we're giving the entire community a tool to create their own intelligent companions, adversaries, and dynamic storytellers.

Stability: Built on proven technologies — Baritone and Cardinal Components — PlayerEngine represents a stable and performant foundation for ambitious AI projects.