Light Event System


Easy and customizable event system implementation for Unreal Engine. Can be used in both Blueprint and C++.

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Light Event System enables you to send and receive UObject-based events in both C++ and Blueprint. It's an implementation of the Observer pattern in the Unreal Engine ecosystem. Visit Quick Start guide to learn how to use the plugin.

Why use this system?

  • Allows you to get rid of tight coupling in your codebase by making your modules dependent only on the Event System and a set of events relevant for them.
  • Event System is customizable via hook methods that allow you to easily change the way events are sent and received, if you need the extra flexibility.
  • Very easy to create event types.
  • It's possible to send and listen to events on FName-based channels.
  • Can be used conveniently in both C++ and Blueprint!



  • An UEventSystem class. Objects can listen for events that are relayed through UEventSystem's instances.
  • A global event system subsystem for convenience.
  • A set of basic event types.
  • Unit tests.

Code Modules:

  •  LightEventSystem (Runtime)
  •  LightEventSystemTests (UncookedOnly)

Number of Blueprints: 0

Number of C++ Classes: 19

Network Replicated: No

Supported Development Platforms: Win64, other platforms are untested but expected to work

Supported Target Build Platforms: Win64, other platforms are untested but expected to work