The Map Marker Component

Add a Map Marker component to an actor or to its Blueprint and it appears on the radar while the game runs.

Setting	What it does
Category	Ally, Enemy, Objective, Point Of Interest, Vehicle or Custom. Categories can be shown or hidden together.
Label	Text for the marker.
Color	Colour of the icon.
Shape	Circle, Diamond, Triangle, Square, Arrow, Star, Ring or Cross.
Size	Icon size multiplier (0.2 to 4).
Show On Radar	Hides the marker without removing the component.
Rotate With Actor	Turns the icon with the actor's yaw. Best for Arrow and Triangle.
Pulse	Pulses the icon to draw attention.
Max Visible Distance	Hides the marker beyond this distance. 0 means no limit.
Clamp To Edge	Pins the marker to the rim of the radar as a pointer once it is out of range. Good for objectives.
Marker Enabled	Turns the marker on or off at runtime.

Auto Register Instead

If you do not want to edit a Blueprint, open the Radar System actor, add an entry to Auto Register Classes and pick the actor class, category, label, colour and shape. Every actor of that class gets a marker when the game starts.

Eliminations

Call Mark Eliminated on the Map Marker when its owner dies. The blip leaves the radar and a short cross stays at the last position for a moment. You can set how long the cross stays with Cross Duration.