LLM StateTree

JSON-Driven StateTree Asset Generator for Unreal Engine 5.

Generate complete StateTree Blueprint assets from JSON (.llmstate files) with schema auto-inference and live preview — no manual StateTree editor work required.

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Features

• One JSON, Complete AI — Tasks, Conditions, Evaluators, and Considerations from a single .llmstate file
• LLM-First Design — AI outputs JSON directly, no StateTree editor knowledge required
• Schema Auto-Inference — Automatically discovers StateTree node types from UE reflection
• Editor Panel — Browse and preview generated StateTree structure
• Parameter Binding — Support for ${Param.Name} and ${Context.Property} binding expressions
• Utility AI — Considerations with response curves for action selection
• 5 Example Files — SimpleAI, GuardAI, UtilityAI, StealthAI, BossAI included
• 14+ Node Types — Tasks, Conditions, Considerations fully documented

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Quick Start

1. Menu → Tools → LLM StateTree Panel
2. Load a .llmstate file or paste JSON
3. Click Generate StateTree
4. The generated StateTree asset is created automatically

{
  "name": "MyAI",
  "version": "1.0",
  "parameters": [
    { "name": "Speed", "type": "float", "default": 500.0 }
  ],
  "states": [
    {
      "name": "Idle",
      "type": "State",
      "tasks": [
        { "type": "StateTreeDelayTask", "properties": { "Duration": 2.0 } }
      ],
      "transitions": [
        { "trigger": "OnStateCompleted", "type": "GotoState", "target": "Patrol" }
      ]
    }
  ]
}

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Version Info

Item	Value
Plugin Version	1.0.0
Engine	UE 5.7+
Modules	LLMStateTree (Runtime), LLMStateTreeEditor (Editor)
Publisher	YominUnreal
Required Plugins	StateTree, GameplayStateTree, EditorScriptingUtilities