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package Game;
import java.io.File;
import java.io.FileFilter;
/*
* Copyright 2009 Volker Oth
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Play background music. Abstraction layer for ModMusic and MidiMusic.
*
* @author Volker Oth
*/
public class Music {
/** music type */
private static enum Type {
/** no type */
NONE,
/** midi music */
MIDI,
/** MOD music */
MOD
}
/** music type */
private static Type type;
/** currently playing? */
private static boolean playing;
/** MOD music object */
private static ModMusic modMusic;
/** Midi music object */
private static MidiMusic midiMusic;
/** music gain */
private static double gain = 1.0;
/** array of file names */
private static String musicFiles[];
/**
* Initialization.
*/
public static void init() {
type = Type.NONE;
modMusic = new ModMusic();
// read available musicfiles for random mode
File dir = new File(Core.resourcePath+"music");
File files[] = dir.listFiles(new MusicFileFilter());
musicFiles = new String[files.length];
for (int i=0; i<files.length; i++)
musicFiles[i] = files[i].getName();
}
/**
* Load music file.
* @param fName file name
* @throws ResourceException
* @throws LemmException
*/
public static void load(final String fName) throws ResourceException, LemmException {
if (fName.toLowerCase().indexOf(".mid") != -1) {
// MIDI
midiMusic = new MidiMusic(fName);
if (type == Type.MOD)
modMusic.close();
type = Type.MIDI;
} else if (fName.toLowerCase().indexOf(".mod") != -1) {
// MOD
modMusic.load(fName);
if (type == Type.MIDI)
midiMusic.close();
type = Type.MOD;
}
playing = false;
}
/**
* Get file name of a random track.
* @return file name of a random track
*/
public static String getRandomTrack() {
double r = Math.random()*musicFiles.length;
return musicFiles[(int)r];
}
/**
* Play music.
*/
public static void play() {
switch (type) {
case MIDI:
midiMusic.play();
playing = true;
break;
case MOD:
modMusic.play();
playing = true;
break;
}
}
/**
* Stop music.
*/
public static void stop() {
switch (type) {
case MIDI:
midiMusic.stop();
playing = false;
break;
case MOD:
modMusic.stop();
playing = false;
break;
}
}
/**
* Close music.
*/
public static void close() {
switch (type) {
case MIDI:
midiMusic.close();
playing = false;
break;
case MOD:
modMusic.close();
playing = false;
break;
}
}
/**
* Check if music is currently playing
* @return true if music is currently playing, else false
*/
public static boolean isPlaying() {
return playing;
}
/**
* Get current music gain (1.0=100%)
* @return current music gain (1.0=100%)
*/
public static double getGain() {
return gain;
}
/**
* Set music gain
* @param gn gain (1.0=100%)
*/
public static void setGain(final double gn) {
if (gn > 1.0)
gain = 1.0;
else if (gn < 0)
gain = 0;
else
gain = gn;
switch (type) {
case MIDI:
midiMusic.setGain(gain);
break;
case MOD:
modMusic.setGain(gain);
break;
}
Core.programProps.set("musicGain", gain);
}
/**
* Get current music type.
* @return music type
*/
public static Type getType() {
return type;
}
}
/**
* File filter for music files.
* @author Volker Oth
*/
class MusicFileFilter implements FileFilter {
/* (non-Javadoc)
* @see java.io.FileFilter#accept(java.io.File)
*/
public boolean accept(final File f) {
if (!f.isFile())
return false;
if (f.getName().toLowerCase().indexOf(".mid") != -1)
return true;
if (f.getName().toLowerCase().indexOf(".mod") != -1)
return true;
return false;
}
}
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