SmoothPath: Better AI Movement for Unreal Engine

Unreal Engine’s standard navigation often makes AI move like a robot. AI agents usually walk in straight lines and hit corners. I made SmoothPath to fix this. It processes pathfinding results and makes movement look natural.

https://www.youtube.com/watch?v=G2yvDr-ZPeI

Key Features

• Path Smoothing: It uses Catmull-Rom Spline algorithms. This changes sharp NavMesh corners into smooth curves.
• Corner Offset: It keeps your AI away from walls automatically. The agent does not touch or scrape obstacles.
• Smart Correction: It uses a custom Funnel Algorithm. It deletes unnecessary “zigzags” and finds the best route.
• NavLink Support: It works perfectly with Custom NavLinks (jumping or climbing). The movement stays fluid.
• Optimized C++: It uses smart caching and raycasting. This means it uses very little CPU power.

Setup in 3 Easy Steps

1. Navigation Setting: Go to Project Settings > Navigation System. Under Agents, change the Navigation Data Class to ExtendedRecastNavmesh.
2. Movement Command: In your Blueprint, do not use the standard move node. Use the Simple Move to Location (Smooth Path) function.
3. Custom Settings (Optional): Change your AI Controller’s Parent Class to SmoothAIController. Now, you can change Offset From Corners and Sample Per Segment in the Details Panel.

Result

SmoothPath is a simple way to get professional AI movement in your project. You can find the plugin on the Fab Marketplace.