System Overview

Diagen is a modular narrative plugin for Unreal Engine 5 designed to bypass native limitations regarding runtime DataTable modifications. It enables:

• Unique, Controlled Dialogue: Non-repetitive responses that adhere strictly to design constraints.
• Dynamic Memory: NPCs that can "learn" and "forget" information dynamically.
• Full Interaction Suite: Supports Player-to-NPC, NPC-to-NPC, and World-to-NPC loops.
• Event Triggering: Natural language detection triggers gameplay events (Animations, Quest Updates).

My Role: Lead System Designer

I was the primary designer behind Diagen, responsible for translating the high-level goal "Dynamic and fully controlled AI NPC" into a functional, logic-based architecture.

• System Architecture: Conceptualized the 4-Table Structure to bypass Unreal's runtime limitations. I defined how static data (Lore) interacts with dynamic states (Tags) to emulate memory evolution.
• Logic & Algorithms: Designed the "Tag Weighting" system that prioritizes information to simulate "learning" and "forgetting" information. This ensures that an NPC mentions "The Dragon Attack" (High Weight) before "The Weather" (Low Weight) when prompting the LLM.
• Technical Documentation and Workshops: Authored the full technical documentation and integration guides used by client studios to implement the plugin into their own pipelines as well as the guided workshops for integration.

---

Tech Demo

Core Architecture: The 4-Table System

The system relies on four distinct DataTables to manage knowledge access and game logic.

Logic Flow: Topic Detection

Runtime: Prompt Construction

At runtime, the system dynamically assembles the final prompt sent to the LLM by layering three data sources:

My Role: Technical Designer & Product Owner

I was responsible for translating the raw capabilities of our TTS engine into a production-ready tool for game developers in Unity.

• Interface Design (UI/UX): Designed and implemented the plugin interfaces for Unity, abstracting complex API parameters into dev-friendly controls.
• Pipeline Engineering: Designed early versions of the CSV Batch Processing feature within Unity, allowing users to generate thousands of lines at once, allowing the tool to go from gimmick to production-ready add-on.
• Creative Curation: Expanded the internal voice library by training and fine-tuning specialized archetypes (Vampires, Elderly, Children) often missing from standard AI models and necessary for the video game ecosystem.
• Documentation & Integration: Wrote the complete user manual and handled direct integration support for clients and internal tech demos.

---

Tool Overview: Ariel TTS

Ariel is a hybrid Text-to-Speech solution supporting both Pre-Generation and Runtime Generation. It operates via Cloud API or Local Model execution.

Facial Animation Automation

Geppetto is a tool designed to automate facial animation by analyzing audio files and driving character blendshapes (morph targets) for both lip-sync and emotional expression.

My Contribution

My main goal on Geppetto was to ensure the tool was actually usable for animators in a real production environment. I acted as the bridge between the machine learning engineers and the end-users.

• Designing the User Experience: I helped build the tool's interfaces for Unity. I focused on making the tool easy-to-understand by non-technical users.
• Stress-Testing the Tech: To prove the tool's versatility, I created comprehensive tech demos using a wide variety of industry-standard rigs—from high-fidelity MetaHumans to stylized Ready Player Me avatars.
• Quality Assurance: I spent a lot of time testing the tool within production environments with my team to build a solid library of phonemes and emotions for our characters.

Totem's Path (Survival RPG Prototype)

My first project at X&Immersion was a first-person Survival RPG designed to showcase our in-house technology (Voice Generation, Lip-Sync, Text Generation) in a gameplay context.

System Design & Implementation

My main contributions as a Game Designer were :

• Procedural Narrative: Designed a Quest & Dialogue system where NPCs generated dynamic quests and evolving dialogue based on world events. This was a key R&D challenge to validate our early AI tech.
• Combat Design: Designed a ruthless, hack-and-slash style first-person melee combat system.
• Crafting & Economy: Built a database of recipes and items to balance resource scarcity and inventory-merging mechanics.
• Implementation: Worked directly in Unity (C#) to implement these systems, bridging the gap between game logic and our AI tools.