Chapter 17 — Enhanced Input

The Mapping Context Must Be Registered

The Input Mapping Context must be registered at runtime, or nothing fires. This is the single most common reason Enhanced Input "doesn't work" — the actions are configured correctly and simply never reach the pawn.

On the PlayerController's BeginPlay, or a Pawn's On Possessed, call:

Get Enhanced Input Local Player Subsystem → Add Mapping Context

The subsystem here is a ULocalPlayerSubsystem — see Chapter 14 for why it's reachable from anywhere without a stored pointer.

Where to Register It

Enhanced Input is the modern system, replacing legacy input.
Using On Possessed rather than BeginPlay is the more reliable place to add the mapping context on a Pawn, since possession order matters — a pawn's BeginPlay can run before a controller has possessed it.
For direct key events on an actor, also check the Enable Input and Auto Receive Input configuration.

In this chapter

The Mapping Context Must Be Registered

Where to Register It