sf::Listener Class Reference

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

#include <SFML/Audio/Listener.hpp>

Static Public Member Functions
static void	setGlobalVolume (float volume)
	Change the global volume of all the sounds and musics.
static float	getGlobalVolume ()
	Get the current value of the global volume.
static void	setPosition (float x, float y, float z)
	Set the position of the listener in the scene.
static void	setPosition (const Vector3f &position)
	Set the position of the listener in the scene.
static Vector3f	getPosition ()
	Get the current position of the listener in the scene.
static void	setDirection (float x, float y, float z)
	Set the forward vector of the listener in the scene.
static void	setDirection (const Vector3f &direction)
	Set the forward vector of the listener in the scene.
static Vector3f	getDirection ()
	Get the current forward vector of the listener in the scene.
static void	setUpVector (float x, float y, float z)
	Set the upward vector of the listener in the scene.
static void	setUpVector (const Vector3f &upVector)
	Set the upward vector of the listener in the scene.
static 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 is his 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.

Because the listener is unique in the scene, sf::Listener only contains static functions and doesn't have to be instantiated.

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);

Definition at line 42 of file Listener.hpp.

Member Function Documentation

getDirection()

static Vector3f sf::Listener::getDirection ( )

static

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

Returns

Listener's forward vector (not normalized)

See also

setDirection

getGlobalVolume()

static float sf::Listener::getGlobalVolume ( )

static

Get the current value of the global volume.

Returns

Current global volume, in the range [0, 100]

See also

setGlobalVolume

getPosition()

static Vector3f sf::Listener::getPosition ( )

static

Get the current position of the listener in the scene.

Returns

Listener's position

See also

setPosition

getUpVector()

static Vector3f sf::Listener::getUpVector ( )

static

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

Returns

Listener's upward vector (not normalized)

See also

setUpVector

setDirection() [1/2]

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

static

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

direction

New listener's direction

See also

getDirection, setUpVector, setPosition

setDirection() [2/2]

static void sf::Listener::setDirection ( float x, float y, float z )

static

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

x	X coordinate of the listener's direction
y	Y coordinate of the listener's direction
z	Z coordinate of the listener's direction

See also

getDirection, setUpVector, setPosition

setGlobalVolume()

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

static

Change the global volume of all the sounds and musics.

The 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

volume

New global volume, in the range [0, 100]

See also

getGlobalVolume

setPosition() [1/2]

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

static

Set the position of the listener in the scene.

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

Parameters

position

New listener's position

See also

getPosition, setDirection

setPosition() [2/2]

static void sf::Listener::setPosition ( float x, float y, float z )

static

Set the position of the listener in the scene.

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

Parameters

x	X coordinate of the listener's position
y	Y coordinate of the listener's position
z	Z coordinate of the listener's position

See also

getPosition, setDirection

setUpVector() [1/2]

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

static

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

upVector

New listener's up vector

See also

getUpVector, setDirection, setPosition

setUpVector() [2/2]

static void sf::Listener::setUpVector ( float x, float y, float z )

static

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

x	X coordinate of the listener's up vector
y	Y coordinate of the listener's up vector
z	Z coordinate of the listener's up vector

See also

getUpVector, setDirection, setPosition

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The documentation for this class was generated from the following file:

• Listener.hpp