Wwise SDK 2021.1.14

RTPC Example

RTPCs let the sound engine compute a property's value by evaluating a curve, defined by the Wwise user, for the X value that corresponds to a parameter within the game. For example, the following code sets the value of the "RPM" game parameter:

// Set the game parameter's value using its name. We could use its
// ID instead, AK::GAME_PARAMETERS::RPM (from Wwise_IDs.h)

AK::SoundEngine::SetRTPCValue( L"RPM", (AkRtpcValue)nRPM );

In the sample program you can experiment with RTPCs in two ways:

In the Car section, select the Play_Engine event, click Post, then move the RPM slider. This changes the value of the RPM game parameter which the engine sound uses to alter its volume and pitch properties
In the Human section, check/uncheck the "Enable Effect" checkbox, then click on Talk. When the checkbox is checked, the "Enable_Effect" game parameter is set to 100. When its unchecked the game parameter is set to 0. The Voices control bus uses this game parameter to set/clear its "Bypass Effect" property.

Refer to Integration Details - RTPCs for more details.

info

Note: This sample code comes from the Sound Engine Integration Sample Project available in the Samples section. Refer to Integration Demo Sample for more information.

AK::SoundEngine::SetRTPCValue

AKSOUNDENGINE_API AKRESULT SetRTPCValue(AkRtpcID in_rtpcID, AkRtpcValue in_value, AkGameObjectID in_gameObjectID=AK_INVALID_GAME_OBJECT, AkTimeMs in_uValueChangeDuration=0, AkCurveInterpolation in_eFadeCurve=AkCurveInterpolation_Linear, bool in_bBypassInternalValueInterpolation=false)

AkRtpcValue

AkReal32 AkRtpcValue

Real time parameter control value.

Definition: AkTypes.h:84

Cette page a-t-elle été utile ?

Besoin d'aide ?

Des questions ? Des problèmes ? Besoin de plus d'informations ? Contactez-nous, nous pouvons vous aider !

Visitez notre page d'Aide

Décrivez-nous de votre projet. Nous sommes là pour vous aider.

Enregistrez votre projet et nous vous aiderons à démarrer sans aucune obligation !

Partir du bon pied avec Wwise