Receiving user input in world system [](/../../#glossary)

To receive data from marker, you need to get it inside Update method.

IMPORTANT! Do not receive markers inside AdvanceTick, because markers lifetime are limited by current frame.

public class UserInputReceiveSystem : ISystem, IUpdate {
    ...
    void IUpdate.Update(in float deltaTime) {
        if (this.world.GetMarker(out WorldClick markerClick) == true) {
            ...
        }
    }
}