Unreal Engine AI: Make Enemies Chase & Attack! #shorts

Why It Matters

It shows indie developers how to implement responsive AI using Unreal’s built‑in tools, accelerating prototyping and reducing custom code overhead.

Key Takeaways

• Set up Nav Mesh Bounds for AI navigation across map.
• Enable auto possess AI and run a behavior tree on enemy.
• Use Blackboard to store target location vector for movement.
• Add perception stimulus on tower and filter AI sight events.
• Trigger attack logic after AI reaches target via behavior tree.

Summary

The video walks through building a basic enemy AI in Unreal Engine that patrols to a designated area and attacks a tower‑defense tile. It starts by covering essential groundwork—adding a Nav Mesh Bounds Volume to cover the entire level, enabling auto‑possess AI on the enemy character, and assigning a behavior tree to drive its actions.

Key steps include creating a sequence node in the behavior tree that first uses a Move To task, driven by a Blackboard entry holding a target location vector. The tutorial then shows how to expose the tower’s position to the AI by adding a perception stimulus on the tower and configuring an AI Perception component on the enemy to listen for sight events, filtering out irrelevant detections. When the tower is perceived, the AI updates the Blackboard with the tower’s location and proceeds to the attack routine.

The presenter highlights practical code snippets such as "auto register source and add in the source for sight" and "add event target perception updated," emphasizing the need to filter perception to focus solely on the tower. He also notes that the attack logic can be inserted as a custom task after the Move To node, completing the chase‑and‑shoot loop.

For developers, this concise workflow demonstrates how to combine navigation, behavior trees, blackboards, and perception to prototype functional enemy behavior quickly, a pattern that scales to more complex tower‑defense or action games.

Original Description

Learn how to build intelligent AI enemies for your game. This guide shows you how to set up AI navigation, target acquisition, and attack behaviors, creating dynamic tower defense challenges. #GameDev #AIProgramming #UnityTutorial #UnrealEngine #TowerDefense