Voice Chat

Voice chat lives on UCrowdySDKSubsystem. There is no wrapper to write: get the subsystem and call the functions.

You toggle two separate things:

• Your microphone capture (sending your voice).
• Your playback of other players (hearing them).

Each side has its own start and stop call, so you can be sending without listening, listening without sending, or both at once.

tip

Capture and playback are independent. For push-to-talk, drive capture from a key while leaving playback running.

The functions

All of these are members of UCrowdySDKSubsystem (module CrowdySDK), and all are BlueprintCallable.

Microphone capture (sending your voice):

• StartVoiceChat() begins capturing your microphone.
• StopVoiceChat() stops capturing.

Playback (hearing other players):

• PlayVoiceChat() lets you hear others.
• MuteVoiceChat() stops playback for you locally.

Extras:

• ToggleOwnerEcho(bool) echoes your own microphone back to you. Use it to confirm capture is working.
• SetVoiceChatStreamTimeoutThreshold(float) sets how long a silent or stalled stream waits before it is considered timed out.

A toggle

Grab the subsystem, then call the start and stop pair. This example tracks a flag and flips both capture and playback together.

C++

#include "Subsystem/CrowdySDKSubsystem.h"

void AMyPlayerController::ToggleVoice()
{
    UCrowdySDKSubsystem* Voice = GetGameInstance()->GetSubsystem<UCrowdySDKSubsystem>();
    if (!Voice)
    {
        return;
    }

    if (!bVoiceOn)
    {
        Voice->StartVoiceChat();
        Voice->PlayVoiceChat();
    }
    else
    {
        Voice->StopVoiceChat();
        Voice->MuteVoiceChat();
    }

    bVoiceOn = !bVoiceOn;
}

Blueprint

The same functions are exposed as BlueprintCallable nodes. The behavior is identical to the C++ calls.

• Get the Crowdy SDK Subsystem.
• Call Start Voice Chat, Stop Voice Chat, Play Voice Chat, Mute Voice Chat, Toggle Owner Echo, or Set Voice Chat Stream Timeout Threshold directly.

Push-to-talk

Call StartVoiceChat() on key down and StopVoiceChat() on key up, and leave PlayVoiceChat() running so you always hear others.

Checking your microphone

To confirm capture is reaching the system before anyone else is connected, turn on owner echo:

Voice->StartVoiceChat();
Voice->ToggleOwnerEcho(true);

You should hear your own microphone.

note

Call ToggleOwnerEcho(false) to stop the echo once you have confirmed it.

Sample reference

The sample project drives these same calls from a switch.

ASampleVoiceSwitch toggles StartVoiceChat and StopVoiceChat, along with the play and mute pair, on UCrowdySDKSubsystem when you interact with it. See the sample project for the full setup.