Bp vs ai

[TechLord]

@Krystoh

Hello everyone,

I’m preetty new with learning AI system in UE4, and I was wondering what is the exact difference between BP & AI in order to make NPC.

1 - I mean, is AI a much powerfull tool, that can make things not possible to do with BP ?
2 - Is it also (or only) easier ?
3 - And/or better optimisation ?
4 - Is AI system still up to date as BP are, or are this feature not so updated nowadays ?

Thanks for your help !

Hi @Krystoh

The difference is:

• AI is the name of the subsystem and method that controls the Agent/Bot.
• Blueprints is the scripting language you script the AI Subsystem with.
• If you don’t favor Blueprints, you can implement AI in UEC++.

There are several methodologies to approach AI: Rules-Based, Finite State Machine, Behavior Trees, and several others.

• UE4 has a Behavior Tree (BT) Editor. It uses Blueprints for scripting the logic for tasks and services in the BT.
• UE4 also has State Machine Editor in the AnimBP that could be dual purposed for AI. It too uses Blueprints to script logic.
• You can also script AI with BPs WITHOUT using the BT or State machine Editor. I’ve created some decent AI using just a Switch Node and *Name *Datatype Variable for States.

Optimization is dependent on how you implement your logic in Blueprints.

All are updated when UE4 are updated.