Enums

The enums you reach for most often when working with entities and RPC events.

ECrowdyEventRecipient

Who runs a CrowdyEvent, and over which transport.

Header: Core/UDP/Enums/ECrowdyMessageType.h.

Value	Meaning
SpatialMulticast	Everyone in range runs it, over the spatial path, thinned by decay and distance. The default.
Multicast	Every member of the session channel runs it, over the channel transport, at any distance with no decay.
OwningClient	Only the client that owns the target entity runs it.
Host	Only the elected host runs it. The host may act on any entity it has locally.

note

SpatialMulticast is the default recipient. For a full walkthrough of how each value selects its transport, see Recipients and Routing.

ECrowdyDecayRate

How delivery probability falls off with distance.

tip

Decay applies only to SpatialMulticast. It has no effect on the other recipients.

Value
No_Decay
Exponential_Decay
Linear_50
Linear_25
Linear_10
Linear_5

ECrowdyReplicationDistance

The maximum distance, in chunks, that a SpatialMulticast event travels from the sender.

Values: None, One_Chunk, Two_Chunks, Three_Chunks, Four_Chunks, Five_Chunks, Six_Chunks, Seven_Chunks, Eight_Chunks.

Eight_Chunks is the default.

ECrowdyEntityMode

How an entity replicates. Set it on UCrowdyEntityComponent.

Header: Replication/Components/CrowdyEntityComponent.h.

Value	Meaning
Dynamic	The continuous state channel streams the executor's snapshot every interval. Use it for movement and anything high frequency.
Static	Event only. State travels through SendEvent and CrowdyEvent handlers.

ECrowdyIdentityPolicy

How an entity gets its NetID.

Value	Meaning
PlayerDerived	From the signed in user id. Only valid on the locally controlled player pawn.
Stable	Hashed from the actor's level path. Every client computes the same id for a level placed actor.
Random	A fresh id each session. Use for runtime spawns.

ECrowdyRole

This client's relationship to an entity.

Header: Data/CrowdyEntityTypes.h.

Value	Meaning
None	Not registered.
Owner	This client simulates the entity and sends its state and events.
RemoteProxy	This client receives state and events from the network.
HostOwned	Owned by whoever is host. Reassigned on host migration.

ECrowdyOwnership

The authority axis for an entity: who owns and simulates it. Set it on UCrowdyEntityComponent. It is orthogonal to ECrowdyEntityMode and ECrowdyIdentityPolicy, and mostly matters for level placed world entities (a runtime host spawn is already owner on the host).

Header: Replication/Components/CrowdyEntityComponent.h.

Value	Meaning
LocalClient	This client owns and simulates the entity (Role=Owner). The default.
Host	Owned by whichever client is currently host (Role=HostOwned, no per client owner). Use it for world or AI entities that must share one authority across every client.

ECrowdyHostOverride

Whether the elected host may super-user-write a client owned entity's Crowdy State. Set it on UCrowdyEntityComponent. Only meaningful when Ownership is LocalClient.

Header: Replication/Components/CrowdyEntityComponent.h.

Value	Meaning
Allow	The host may override this entity's Crowdy State as a super-user, and the owner adopts the correction. The default.
OwnerOnly	Only the owning client may change this entity. Even a host-sourced correction is dropped.

note

Host authority on the Crowdy State plane is a precedence-by-convention, not a server-enforced boundary. Keep authoritative or cheat-sensitive state off this plane. See host authority.

ECrowdyStateHeartbeat

Per entity control over the Crowdy State keyframe heartbeat, the periodic re-send of CrowdyHeartbeat-marked properties. Set it on UCrowdyEntityComponent. On-change replication is unaffected either way.

Header: Replication/Components/CrowdyEntityComponent.h.

Value	Meaning
Inherit	Follow the map profile. Marked properties re-send every StateKeyframeIntervalSeconds when the map's keyframe interval is greater than 0. The default.
Off	Never emit a keyframe heartbeat for this entity, regardless of its property marks or the map setting. A kill switch for always-active entities.

ECrowdyReplicationMode

The mode chosen in the "Crowdy Replication" dropdown on a Blueprint variable's Details panel. Editor only.

Header: Customizations/CrowdyReplicatedVariableCustomization.h.

Value	Meaning
None	Not networked by Crowdy. Selecting it scrubs every Crowdy State key off the variable.
Replicated	Crowdy State: the fast, client-authoritative view plane. Stamps the Crowdy State metadata so the variable flows through the same discovery and bake as a C++ meta=(CrowdyState) property.
ServerOwned	Reserved for a future server-authoritative mode. Not selectable yet.

note

The dropdown offers only None and Replicated today. For how to author a replicated variable, see Crowdy State.