IDirectSound3DListener8::SetVelocity
Sets the listener's velocity.
HRESULT SetVelocity(
D3DVALUE x,
D3DVALUE y,
D3DVALUE z,
DWORD dwApply
);
Parameters
- x, y, and z
- Values that specify the coordinates of the listener's velocity vector. DirectSound may adjust these values to prevent floating-point overflow.
- dwApply
- Value that specifies when the setting should be applied. This value must be one of the following:
- DS3D_DEFERRED
- Settings are not applied until the application calls the IDirectSound3DListener8::CommitDeferredSettings method. This allows the application to change several settings and generate a single recalculation.
- DS3D_IMMEDIATE
- Settings are applied immediately, causing the system to recalculate the 3-D coordinates for all 3-D sound buffers.
Return Values
If the method succeeds, the return value is DS_OK.
If the method fails, the return value may be DSERR_INVALIDPARAM.
Remarks
Velocity is used only for Doppler effects. It does not actually move the listener. To change the listener's position, use the IDirectSound3DListener8::SetPosition method. The default velocity is (0,0,0).
Header: Declared in dsound.h.
See Also
IDirectSound3DListener8::GetVelocity