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Classes | Functions
sf::Listener Namespace Reference
Audio module

The audio listener is the point in the scene from where all the sounds are heard. More...

Classes

struct  Cone
 Structure defining the properties of a directional cone. More...

Functions

void setGlobalVolume (float volume)
 Change the global volume of all the sounds and musics.
float getGlobalVolume ()
 Get the current value of the global volume.
void setPosition (const Vector3f &position)
 Set the position of the listener in the scene.
Vector3f getPosition ()
 Get the current position of the listener in the scene.
void setDirection (const Vector3f &direction)
 Set the forward vector of the listener in the scene.
Vector3f getDirection ()
 Get the current forward vector of the listener in the scene.
void setVelocity (const Vector3f &velocity)
 Set the velocity of the listener in the scene.
Vector3f getVelocity ()
 Get the current forward vector of the listener in the scene.
void setCone (const Listener::Cone &cone)
 Set the cone properties of the listener in the audio scene.
Listener::Cone getCone ()
 Get the cone properties of the listener in the audio scene.
void setUpVector (const Vector3f &upVector)
 Set the upward vector of the listener in the scene.
Vector3f getUpVector ()
 Get the current upward vector of the listener in the scene.

Detailed Description

The audio listener is the point in the scene from where all the sounds are heard.

The audio listener defines the global properties of the audio environment, it defines where and how sounds and musics are heard.

If sf::View is the eyes of the user, then sf::Listener are their ears (by the way, they are often linked together – same position, orientation, etc.).

sf::Listener is a simple interface, which allows to setup the listener in the 3D audio environment (position, direction and up vector), and to adjust the global volume.

Usage example:

// Move the listener to the position (1, 0, -5)
sf::Listener::setPosition({1, 0, -5});
// Make it face the right axis (1, 0, 0)
sf::Listener::setDirection({1, 0, 0});
// Reduce the global volume
sf::Listener::setGlobalVolume(50);
sf::Listener::setPosition
void setPosition(const Vector3f &position)
Set the position of the listener in the scene.
sf::Listener::setDirection
void setDirection(const Vector3f &direction)
Set the forward vector of the listener in the scene.
sf::Listener::setGlobalVolume
void setGlobalVolume(float volume)
Change the global volume of all the sounds and musics.

Function Documentation

◆ getCone()

Listener::Cone sf::Listener::getCone ( )
nodiscard

Get the cone properties of the listener in the audio scene.

Returns
Cone properties of the listener
See also
setCone

◆ getDirection()

Vector3f sf::Listener::getDirection ( )
nodiscard

Get the current forward vector of the listener in the scene.

Returns
Listener's forward vector (not normalized)
See also
setDirection

◆ getGlobalVolume()

float sf::Listener::getGlobalVolume ( )
nodiscard

Get the current value of the global volume.

Returns
Current global volume, in the range [0, 100]
See also
setGlobalVolume

◆ getPosition()

Vector3f sf::Listener::getPosition ( )
nodiscard

Get the current position of the listener in the scene.

Returns
Listener's position
See also
setPosition

◆ getUpVector()

Vector3f sf::Listener::getUpVector ( )
nodiscard

Get the current upward vector of the listener in the scene.

Returns
Listener's upward vector (not normalized)
See also
setUpVector

◆ getVelocity()

Vector3f sf::Listener::getVelocity ( )
nodiscard

Get the current forward vector of the listener in the scene.

Returns
Listener's velocity
See also
setVelocity

◆ setCone()

void sf::Listener::setCone ( const Listener::Cone & cone)

Set the cone properties of the listener in the audio scene.

The cone defines how directional attenuation is applied. The default cone of a sound is (2 * PI, 2 * PI, 1).

Parameters
coneCone properties of the listener in the scene
See also
getCone

◆ setDirection()

void sf::Listener::setDirection ( const Vector3f & direction)

Set the forward vector of the listener in the scene.

The direction (also called "at vector") is the vector pointing forward from the listener's perspective. Together with the up vector, it defines the 3D orientation of the listener in the scene. The direction vector doesn't have to be normalized. The default listener's direction is (0, 0, -1).

Parameters
directionNew listener's direction
See also
getDirection, setUpVector, setPosition

◆ setGlobalVolume()

void sf::Listener::setGlobalVolume ( float volume)

Change the global volume of all the sounds and musics.

volume is a number between 0 and 100; it is combined with the individual volume of each sound / music. The default value for the volume is 100 (maximum).

Parameters
volumeNew global volume, in the range [0, 100]
See also
getGlobalVolume

◆ setPosition()

void sf::Listener::setPosition ( const Vector3f & position)

Set the position of the listener in the scene.

The default listener's position is (0, 0, 0).

Parameters
positionNew listener's position
See also
getPosition, setDirection

◆ setUpVector()

void sf::Listener::setUpVector ( const Vector3f & upVector)

Set the upward vector of the listener in the scene.

The up vector is the vector that points upward from the listener's perspective. Together with the direction, it defines the 3D orientation of the listener in the scene. The up vector doesn't have to be normalized. The default listener's up vector is (0, 1, 0). It is usually not necessary to change it, especially in 2D scenarios.

Parameters
upVectorNew listener's up vector
See also
getUpVector, setDirection, setPosition

◆ setVelocity()

void sf::Listener::setVelocity ( const Vector3f & velocity)

Set the velocity of the listener in the scene.

The default listener's velocity is (0, 0, -1).

Parameters
velocityNew listener's velocity
See also
getVelocity, getDirection, setUpVector, setPosition