FMOD_3D_ROLLOFF_CALLBACK

Callback for system wide 3d channel volume calculation which overrides fmod's internal calculation code.

float F_CALLBACK FMOD_3D_ROLLOFF_CALLBACK(
  FMOD_CHANNEL *channel,
  float distance
);

Parameters

channel

Pointer to a channel handle.

distance

Distance in units (meters by default).

Return the channel volume for the given distance.

C++ Users. Cast FMOD_CHANNEL * to FMOD::Channel * inside the callback and use as normal.

NOTE: When using the event system, call Channel::getUserData to get the event instance handle of the event that spawned the channel in question.