com.brackeen.javagamebook.sound
Class Filter3d

java.lang.Object
  com.brackeen.javagamebook.sound.SoundFilter
      com.brackeen.javagamebook.sound.Filter3d

public class Filter3d
extends SoundFilter

The Filter3d class is a SoundFilter that creates a 3d sound effect. The sound is filtered so that it is quiter the farther away the sound source is from the listener.

Possible ideas to extend this class:

• pan the sound to the left and right speakers

See Also:

FilteredSoundStream

Field Summary

private float	lastVolume
private Sprite	listener
private int	maxDistance
private static int	NUM_SHIFTING_SAMPLES
private Sprite	source

Constructor Summary

Filter3d(Sprite source, Sprite listener, int maxDistance)
Creates a new Filter3d object with the specified source and listener Sprites.

Method Summary

void	filter(byte[] samples, int offset, int length) Filters the sound so that it gets more quiet with distance.

Methods inherited from class com.brackeen.javagamebook.sound.SoundFilter

filter, getRemainingSize, getSample, reset, setSample

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NUM_SHIFTING_SAMPLES

private static final int NUM_SHIFTING_SAMPLES

See Also:

Constant Field Values

source

private Sprite source

listener

private Sprite listener

maxDistance

private int maxDistance

lastVolume

private float lastVolume

Constructor Detail

Filter3d

public Filter3d(Sprite source,
                Sprite listener,
                int maxDistance)

Creates a new Filter3d object with the specified source and listener Sprites. The Sprite's position can be changed while this filter is running.

The maxDistance parameter is the maximum distance that the sound can be heard.

Method Detail

filter

public void filter(byte[] samples,
                   int offset,
                   int length)

Filters the sound so that it gets more quiet with distance.

Specified by:

filter in class SoundFilter