package org.newdawn.slick;
import java.net.URL;
import java.util.ArrayList;
import org.newdawn.slick.openal.Audio;
import org.newdawn.slick.openal.AudioImpl;
import org.newdawn.slick.openal.SoundStore;
import org.newdawn.slick.util.Log;
/**
* A piece of music loaded and playable within the game. Only one piece of music can
* play at any given time and a channel is reserved so music will always play.
*
* @author kevin
*/
public class Music {
/** The music currently being played or null if none */
private static Music currentMusic;
/**
* Poll the state of the current music. This causes streaming music
* to stream and checks listeners. Note that if you're using a game container
* this will be auto-magically called for you.
*
* @param delta The amount of time since last poll
*/
public static void poll(int delta) {
if (currentMusic != null) {
SoundStore.get().poll(delta);
if (!SoundStore.get().isMusicPlaying()) {
Music oldMusic = currentMusic;
currentMusic = null;
oldMusic.fireMusicEnded();
}
}
}
/** The sound from FECK representing this music */
private Audio sound;
/** True if the music is playing */
private boolean playing;
/** The list of listeners waiting for notification that the music ended */
private ArrayList listeners = new ArrayList();
/** The volume of this music */
private float volume = 1.0f;
/**
* Create and load a piece of music (either OGG or MOD/XM)
*
* @param ref The location of the music
* @throws SlickException
*/
public Music(String ref) throws SlickException {
this(ref, false);
}
/**
* Create and load a piece of music (either OGG or MOD/XM)
*
* @param ref The location of the music
* @throws SlickException
*/
public Music(URL ref) throws SlickException {
this(ref, false);
}
/**
* Create and load a piece of music (either OGG or MOD/XM)
*
* @param url The location of the music
* @param streamingHint A hint to indicate whether streaming should be used if possible
* @throws SlickException
*/
public Music(URL url, boolean streamingHint) throws SlickException {
SoundStore.get().init();
String ref = url.getFile();
try {
if (ref.toLowerCase().endsWith(".ogg")) {
if (streamingHint) {
sound = SoundStore.get().getOggStream(url);
} else {
sound = SoundStore.get().getOgg(url.openStream());
}
} else if (ref.toLowerCase().endsWith(".wav")) {
sound = SoundStore.get().getWAV(url.openStream());
} else if (ref.toLowerCase().endsWith(".xm") || ref.toLowerCase().endsWith(".mod")) {
sound = SoundStore.get().getMOD(url.openStream());
} else if (ref.toLowerCase().endsWith(".aif") || ref.toLowerCase().endsWith(".aiff")) {
sound = SoundStore.get().getAIF(url.openStream());
} else {
throw new SlickException("Only .xm, .mod, .ogg, and .aif/f are currently supported.");
}
} catch (Exception e) {
Log.error(e);
throw new SlickException("Failed to load sound: "+url);
}
}
/**
* Create and load a piece of music (either OGG or MOD/XM)
*
* @param ref The location of the music
* @param streamingHint A hint to indicate whether streaming should be used if possible
* @throws SlickException
*/
public Music(String ref, boolean streamingHint) throws SlickException {
SoundStore.get().init();
try {
if (ref.toLowerCase().endsWith(".ogg")) {
if (streamingHint) {
sound = SoundStore.get().getOggStream(ref);
} else {
sound = SoundStore.get().getOgg(ref);
}
} else if (ref.toLowerCase().endsWith(".wav")) {
sound = SoundStore.get().getWAV(ref);
} else if (ref.toLowerCase().endsWith(".xm") || ref.toLowerCase().endsWith(".mod")) {
sound = SoundStore.get().getMOD(ref);
} else if (ref.toLowerCase().endsWith(".aif") || ref.toLowerCase().endsWith(".aiff")) {
sound = SoundStore.get().getAIF(ref);
} else {
throw new SlickException("Only .xm, .mod, .ogg, and .aif/f are currently supported.");
}
} catch (Exception e) {
Log.error(e);
throw new SlickException("Failed to load sound: "+ref);
}
}
/**
* Add a listener to this music
*
* @param listener The listener to add
*/
public void addListener(MusicListener listener) {
listeners.add(listener);
}
/**
* Remove a listener from this music
*
* @param listener The listener to remove
*/
public void removeListener(MusicListener listener) {
listeners.remove(listener);
}
/**
* Fire notifications that this music ended
*/
private void fireMusicEnded() {
playing = false;
for (int i=0;i<listeners.size();i++) {
((MusicListener) listeners.get(i)).musicEnded(this);
}
}
/**
* Fire notifications that this music was swapped out
*
* @param newMusic The new music that will be played
*/
private void fireMusicSwapped(Music newMusic) {
playing = false;
for (int i=0;i<listeners.size();i++) {
((MusicListener) listeners.get(i)).musicSwapped(this, newMusic);
}
}
/**
* Loop the music
*/
public void loop() {
loop(1.0f, volume * SoundStore.get().getMusicVolume());
}
/**
* Play the music
*/
public void play() {
play(1.0f, volume * SoundStore.get().getMusicVolume());
}
/**
* Play the music at a given pitch and volume
*
* @param pitch The pitch to play the music at (1.0 = default)
* @param volume The volume to play the music at (1.0 = default)
*/
public void play(float pitch, float volume) {
startMusic(pitch, volume, false);
}
/**
* Loop the music at a given pitch and volume
*
* @param pitch The pitch to play the music at (1.0 = default)
* @param volume The volume to play the music at (1.0 = default)
*/
public void loop(float pitch, float volume) {
startMusic(pitch, volume, true);
}
/**
* play or loop the music at a given pitch and volume
* @param pitch The pitch to play the music at (1.0 = default)
* @param volume The volume to play the music at (1.0 = default)
* @param loop if false the music is played once, the music is looped otherwise
*/
private void startMusic(float pitch, float volume, boolean loop) {
if (currentMusic != null) {
currentMusic.stop();
currentMusic.fireMusicSwapped(this);
}
currentMusic = this;
if (volume < 0.0f)
volume = 0.0f;
if (volume > 1.0f)
volume = 1.0f;
setVolume(volume);
sound.playAsMusic(pitch, volume, loop);
playing = true;
}
/**
* Pause the music playback
*/
public void pause() {
playing = false;
AudioImpl.pauseMusic();
}
/**
* Stop the music playing
*/
public void stop() {
sound.stop();
}
/**
* Resume the music playback
*/
public void resume() {
playing = true;
AudioImpl.restartMusic();
}
/**
* Check if the music is being played
*
* @return True if the music is being played
*/
public boolean playing() {
return (currentMusic == this) && (playing);
}
/**
* Set the volume of the music as a factor of the global volume setting
*
* @param volume The volume to play music at. 0 - 1, 1 is Max
*/
public void setVolume(float volume) {
// Bounds check
if(volume > 1) {
volume = 1;
} else if(volume < 0) {
volume = 0;
}
this.volume = volume;
// This sound is being played as music
if (currentMusic == this) {
SoundStore.get().setCurrentMusicVolume(volume);
}
}
/**
* Get the individual volume of the music
* @return The volume of this music, still effected by global SoundStore volume. 0 - 1, 1 is Max
*/
public float getVolume() {
return volume;
}
}
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