Perhaps the most embarrassing pre-patch behavior: monsters could see players through chain-link fences, thin foliage, and even partially transparent particle effects because the kit’s raycast ignored transparency layers. Players could hide in plain sight behind a curtain, only to be tracked perfectly.
The updated version now includes a material opacity threshold setting and a secondary sphere-cast confirmation before triggering chase mode.
Attachments:
Report prepared by: [Name]
Review required by: Lead AI Programmer / Technical Director
The Monster AI Kit for Unreal Engine has received several significant updates (up to version #10) designed to improve monster behavior, performance, and compatibility with other systems like Horror Engine. Core Setup & Features
The kit is designed for quick implementation without deep coding knowledge.
Behavior States: Easily manage states such as Idle, Patrol, Chasing, Searching, and Fleeing.
Perception System: Built-in support for Vision, Hearing, and Damage detection. monster ai kit patched
Team Tags: Use team tags to prevent monsters from attacking allies.
Animation Helper: A UI tool that assists in creating Animation Blueprints and Blendspaces directly within the kit. Recent Patch Highlights (V9 & V10)
Recent updates have focused on making monster interactions more dynamic and fluid.
Dynamic Hit Reactions: Monsters can now react to hits based on the direction and location of the impact, replacing static animations with dynamic movements.
Damage Multipliers per Bone: You can specify exact damage values for different body parts (e.g., higher damage for headshots) by adding multipliers to specific bones in the monster data.
Smoothed Patrolling: In version #10, the "stutter" at patrol points was removed. If Patrol Delay is set to 0, the monster will move smoothly between points without stopping.
Niagara Support: Hit effects now support Niagara particles, and a free Niagara blood effect is included in the system. Fixing Common Issues (The "Patched" Guide) Attachments:
If you are integrating the kit with other tools or fixing specific bugs, follow these steps:
Horror Engine Integration Fix: If damage isn't applying correctly when using the Horror Engine gun, find the shootTargetCheck function. If the initial cast fails, add a secondary cast to "Monster NPC" to ensure the point damage is processed.
Multiplayer Fleeing: Several patches have addressed the Flee state in multiplayer, specifically fixing issues where monsters would hang or get stuck after a player was killed.
Investigation Logic: Recent patches fixed a bug where monsters failed to investigate the last seen location. The AI now correctly investigates the source of a sound rather than just the player's general area. Implementation Tips
Local Storage: For AI toolkit training, it is recommended to download and store models locally to avoid connection issues during training.
Navigation Mesh: Ensure your levels have a Navigation Mesh (NavMesh) component, as this is required for the monster's roaming and chasing logic to function.
Ability Toggling: You can toggle dynamic reactions and other combat parameters directly in the Monster Data UI to customize how your specific creature behaves. Report prepared by: [Name] Review required by: Lead
Are you integrating the Monster AI Kit with a specific engine version or another marketplace asset?
Following the recent patch applied to the Monster AI Kit, this report provides an initial assessment of system performance, bug resolution, and remaining edge cases. The patch successfully addressed three critical issues related to pathfinding stuttering, aggro range inconsistency, and animation-based attack timing. However, minor regressions in idle behavior and resource consumption under high spawn counts have been observed.
Overall Status: Deployed – Monitoring Recommended
For multiplayer horror games using the kit, the patch enforced that the server is the only source of truth. Pre-patch, clients could tell the server "I am hiding" and the AI would accept it. Now, the server checks line-of-sight via trace channels independently. If a client sends a "hide" command without a valid closet interaction, the server ignores it and marks the player as "exposed."
While the patch improved performance, it arrived with a catch: Backward Compatibility.
Many developers who updated the asset in existing projects found their scenes breaking. Because the scripts were renamed or restructured to support the new architecture, prefabs placed in old scenes often lost their references.
For developers currently maintaining a project built on the older version of Monster AI Kit, the update requires a manual migration process: