RPC Metadata Keys

This page lists the metadata you place on a CrowdyEvent receiver to control routing.

The keys go on the UFUNCTION(meta=(...)) line of your _Implementation function.

UFUNCTION(meta = (CrowdyEvent,
    CrowdyRecipient = "SpatialMulticast",
    CrowdyDecay = "Exponential_Decay",
    CrowdyDistance = "Four_Chunks"))
void FireWeapon_Implementation(int32 Ammo, FVector Direction);
CROWDY_EVENT(FireWeapon)

Keys

Each key and its accepted value, default, and behavior:

Key	Value	Default	Notes
`CrowdyEvent`	(marker, no value)	required	Marks the function as a CrowdyEvent receiver.
`CrowdyRecipient`	an `ECrowdyEventRecipient` name	`SpatialMulticast`	Who receives the event. See enums.
`CrowdyDecay`	an `ECrowdyDecayRate` name	`No_Decay`	Distance falloff. Applies only to `SpatialMulticast`.
`CrowdyDistance`	an `ECrowdyReplicationDistance` name	`Eight_Chunks`	Maximum range in chunks. Applies only to `SpatialMulticast`.
`CrowdyChannel`	a channel name string	empty (the session channel)	The named channel for a `Multicast` event.

tip

Pass enum values as the short enumerator name in quotes, for example CrowdyRecipient = "OwningClient".

caution

The receiver must be a real UFUNCTION. The CROWDY_EVENT(Name) macro only generates the call site. It cannot emit the UFUNCTION, because UnrealHeaderTool does not expand macros when it scans for reflected functions.

See RPC Events in C++.

Keys​

Keys