- cpp3ds
- SoundSource
Base class defining a sound's properties. More...
#include <SoundSource.hpp>
Public Types | |
| enum | Status { Stopped, Paused, Playing } |
| Enumeration of the sound source states. More... | |
Public Member Functions | |
| SoundSource (const SoundSource ©) | |
| Copy constructor. More... | |
| virtual | ~SoundSource () |
| Destructor. More... | |
| void | setPitch (float pitch) |
| Set the pitch of the sound. More... | |
| void | setVolume (float volume) |
| Set the volume of the sound. More... | |
| void | setPosition (float x, float y, float z) |
| Set the 3D position of the sound in the audio scene. More... | |
| void | setPosition (const Vector3f &position) |
| Set the 3D position of the sound in the audio scene. More... | |
| void | setRelativeToListener (bool relative) |
| Make the sound's position relative to the listener or absolute. More... | |
| void | setMinDistance (float distance) |
| Set the minimum distance of the sound. More... | |
| void | setAttenuation (float attenuation) |
| Set the attenuation factor of the sound. More... | |
| float | getPitch () const |
| Get the pitch of the sound. More... | |
| float | getVolume () const |
| Get the volume of the sound. More... | |
| Vector3f | getPosition () const |
| Get the 3D position of the sound in the audio scene. More... | |
| bool | isRelativeToListener () const |
| Tell whether the sound's position is relative to the listener or is absolute. More... | |
| float | getMinDistance () const |
| Get the minimum distance of the sound. More... | |
| float | getAttenuation () const |
| Get the attenuation factor of the sound. More... | |
| SoundSource & | operator= (const SoundSource &right) |
| Overload of assignment operator. More... | |
Protected Member Functions | |
| SoundSource () | |
| Default constructor. More... | |
| Status | getStatus () const |
| Get the current status of the sound (stopped, paused, playing) More... | |
Protected Attributes | |
| unsigned int | m_source |
| OpenAL source identifier. More... | |
| int | m_channel |
| Current DSP channel for this sound source. More... | |
| Time | m_playOffset |
| Time | m_pauseOffset |
| ndspWaveBuf | m_ndspWaveBuf |
Base class defining a sound's properties.
cpp3ds::SoundSource is not meant to be used directly, it only serves as a common base for all audio objects that can live in the audio environment.
It defines several properties for the sound: pitch, volume, position, attenuation, etc. All of them can be changed at any time with no impact on performances.
Definition at line 44 of file SoundSource.hpp.
Enumeration of the sound source states.
| Enumerator | |
|---|---|
| Stopped |
Sound is not playing. |
| Paused |
Sound is paused. |
| Playing |
Sound is playing. |
Definition at line 52 of file SoundSource.hpp.
| cpp3ds::SoundSource::SoundSource | ( | const SoundSource & | copy | ) |
Copy constructor.
| copy | Instance to copy |
|
virtual |
Destructor.
|
protected |
Default constructor.
This constructor is meant ot be called by derived classes only.
| float cpp3ds::SoundSource::getAttenuation | ( | ) | const |
Get the attenuation factor of the sound.
| float cpp3ds::SoundSource::getMinDistance | ( | ) | const |
Get the minimum distance of the sound.
| float cpp3ds::SoundSource::getPitch | ( | ) | const |
| Vector3f cpp3ds::SoundSource::getPosition | ( | ) | const |
Get the 3D position of the sound in the audio scene.
|
protected |
Get the current status of the sound (stopped, paused, playing)
| float cpp3ds::SoundSource::getVolume | ( | ) | const |
| bool cpp3ds::SoundSource::isRelativeToListener | ( | ) | const |
Tell whether the sound's position is relative to the listener or is absolute.
| SoundSource& cpp3ds::SoundSource::operator= | ( | const SoundSource & | right | ) |
Overload of assignment operator.
| right | Instance to assign |
| void cpp3ds::SoundSource::setAttenuation | ( | float | attenuation | ) |
Set the attenuation factor of the sound.
The attenuation is a multiplicative factor which makes the sound more or less loud according to its distance from the listener. An attenuation of 0 will produce a non-attenuated sound, i.e. its volume will always be the same whether it is heard from near or from far. On the other hand, an attenuation value such as 100 will make the sound fade out very quickly as it gets further from the listener. The default value of the attenuation is 1.
| attenuation | New attenuation factor of the sound |
| void cpp3ds::SoundSource::setMinDistance | ( | float | distance | ) |
Set the minimum distance of the sound.
The "minimum distance" of a sound is the maximum distance at which it is heard at its maximum volume. Further than the minimum distance, it will start to fade out according to its attenuation factor. A value of 0 ("inside the head of the listener") is an invalid value and is forbidden. The default value of the minimum distance is 1.
| distance | New minimum distance of the sound |
| void cpp3ds::SoundSource::setPitch | ( | float | pitch | ) |
Set the pitch of the sound.
The pitch represents the perceived fundamental frequency of a sound; thus you can make a sound more acute or grave by changing its pitch. A side effect of changing the pitch is to modify the playing speed of the sound as well. The default value for the pitch is 1.
| pitch | New pitch to apply to the sound |
| void cpp3ds::SoundSource::setPosition | ( | float | x, |
| float | y, | ||
| float | z | ||
| ) |
Set the 3D position of the sound in the audio scene.
Only sounds with one channel (mono sounds) can be spatialized. The default position of a sound is (0, 0, 0).
| x | X coordinate of the position of the sound in the scene |
| y | Y coordinate of the position of the sound in the scene |
| z | Z coordinate of the position of the sound in the scene |
| void cpp3ds::SoundSource::setPosition | ( | const Vector3f & | position | ) |
Set the 3D position of the sound in the audio scene.
Only sounds with one channel (mono sounds) can be spatialized. The default position of a sound is (0, 0, 0).
| position | Position of the sound in the scene |
| void cpp3ds::SoundSource::setRelativeToListener | ( | bool | relative | ) |
Make the sound's position relative to the listener or absolute.
Making a sound relative to the listener will ensure that it will always be played the same way regardless the position of the listener. This can be useful for non-spatialized sounds, sounds that are produced by the listener, or sounds attached to it. The default value is false (position is absolute).
| relative | True to set the position relative, false to set it absolute |
| void cpp3ds::SoundSource::setVolume | ( | float | volume | ) |
Set the volume of the sound.
The volume is a value between 0 (mute) and 100 (full volume). The default value for the volume is 100.
| volume | Volume of the sound |
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protected |
Current DSP channel for this sound source.
Definition at line 277 of file SoundSource.hpp.
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protected |
OpenAL source identifier.
Definition at line 276 of file SoundSource.hpp.