Working from an example from http://www.oracle.com/technetwork/java/index-139508.html, I implemented the Java.sound api which works very well. From there, I had to implement such functions as start, stop, pause, resume, pan, gain, and isPlaying. After running some test cases, I've concluded that it is pretty complete for now.
I also started on the main menu for the primary purpose to see how using the java.swing objects would interact with the changing of gamestates. That took about an hour to get that solved, and there's still a little bug where one in about every three runs the menu is all messed up in the GridLayout. This has fairly low priority and my hunch is that I'm not initializing the size correctly or something minor like that.
2) Looking at the scrum board for next week, I want to make the profile system. This is primarily file manipulation and a basic class, so it shouldn't take the entire class period. If I get time, I want to implement some system in my View class that will scale my sprites with the window.. which is just essentially passing a ratio of the window size down along the render chain.
3) Today was a successful day and I feel very relieved to have the trusty Java docs at my disposal. The sound engine was a big part of it that I didn't have any idea what was going on going into it. So here's some code:
This is the code for the SoundManager. Its a singleton and basically has all the functions of the MySound class, and maps a bunch of MySounds to strings for easy retrieval. It can be accessed from any part of the program to alter sounds wherever.
package seniorproj;
import java.util.HashMap;
public class SoundManager {
private static HashMap sound_list;
private static SoundManager instance=null;
private SoundManager(){
sound_list=new HashMap();
}
public static SoundManager get(){
if (instance==null){
instance=new SoundManager();
}
return instance;
}
public static void addSound(String name,String fname){
sound_list.put(name,new MySound(fname));
}
public static int playSound(String name){
MySound tmp=sound_list.get(name);
if(tmp!=null){
tmp.playSound();
return 0;
}
else{
return 1;
}
}
public static int pauseSound(String name){
MySound tmp=sound_list.get(name);
if(tmp!=null){
tmp.pauseSound();
return 0;
}
else{
return 1;
}
}
public static int stopSound(String name){
MySound tmp=sound_list.get(name);
if(tmp!=null){
tmp.stopSound();
return 0;
}
else{
return 1;
}
}
public static int setLooping(String name,boolean b){
MySound tmp=sound_list.get(name);
if(tmp!=null){
tmp.setLooping(b);
return 0;
}
else{
return 1;
}
}
public static int setVolume(String name,float percent){
MySound tmp=sound_list.get(name);
if(tmp!=null){
tmp.setVolume(percent);
return 0;
}
else{
return 1;
}
}
public static int setPan(String name,float percent){
MySound tmp=sound_list.get(name);
if(tmp!=null){
tmp.setPan(percent);
return 0;
}
else{
return 1;
}
}
public static boolean isPlaying(String name){
MySound tmp=sound_list.get(name);
if(tmp!=null){
return tmp.isPlaying();
}
return false;
}
}
Next up is the MySound class, which loads the sound using Java.sound. I was working off that example posted above. After sifting through the code I've gotten a pretty good grasp of what is actually going on. As you'll see, it has most of the same functions as the SoundManager.
/*
* Based on http://www.oracle.com/technetwork/java/index-139508.html
*/
package seniorproj;
import javax.swing.*;
import javax.sound.sampled.*;
import java.io.File;
public class MySound extends JApplet {
Object currentSound;
String name;
private boolean loop=true;
public MySound(String fname){
name=fname;
loadSound(fname);
}
public boolean loadSound(String fname){
File filein = new File(fname);
try {
currentSound = AudioSystem.getAudioInputStream(filein);
}
catch(Exception e1) {
System.out.println("Could not getAudioInputStream");
return false;
}
try {
AudioInputStream stream = (AudioInputStream) currentSound;
AudioFormat format = stream.getFormat();
/**
* we can't yet open the device for ALAW/ULAW playback,
* convert ALAW/ULAW to PCM
*/
if ((format.getEncoding() == AudioFormat.Encoding.ULAW) ||
(format.getEncoding() == AudioFormat.Encoding.ALAW))
{
AudioFormat tmp = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
format.getSampleRate(),
format.getSampleSizeInBits() * 2,
format.getChannels(),
format.getFrameSize() * 2,
format.getFrameRate(),
true);
stream = AudioSystem.getAudioInputStream(tmp, stream);
format = tmp;
}
DataLine.Info info = new DataLine.Info(
Clip.class,
stream.getFormat(),
((int) stream.getFrameLength() *
format.getFrameSize()));
Clip clip = (Clip) AudioSystem.getLine(info);
clip.open(stream);
currentSound = clip;
}
catch (Exception ex) {
ex.printStackTrace();
currentSound = null;
return false;
}
return true;
}
public void playSound(){
if (currentSound!=null){
Clip clip = (Clip) currentSound;
if(loop==false)
clip.start();
else
clip.loop(clip.LOOP_CONTINUOUSLY);
}
else{
loadSound(name);
Clip clip = (Clip) currentSound;
clip.start();
}
}
public void stopSound(){
if (currentSound!=null){
Clip clip = (Clip) currentSound;
clip.stop();
currentSound=null;
}
}
public void pauseSound(){
if (currentSound!=null){
Clip clip = (Clip) currentSound;
clip.stop();
}
}
public void setVolume(float percent){
if (currentSound!=null){
if(percent<0)percent=0;
if(percent>100)percent=100;
percent/=100;
try {
Clip clip = (Clip) currentSound;
FloatControl gainControl =
(FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN);
float dB = (float)
(Math.log(percent==0.0?0.0001:percent)/Math.log(10.0)*20.0);
gainControl.setValue(dB);
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
public void setPan(float percent){
if (currentSound!=null){
if(percent<-100)percent=-100;
if(percent>100)percent=100;
try {
Clip clip = (Clip) currentSound;
FloatControl panControl =
(FloatControl) clip.getControl(FloatControl.Type.PAN);
panControl.setValue(percent/100);
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
public void setLooping(boolean b){
loop=b;
}
public boolean isPlaying(){
if(currentSound!=null){
Clip clip = (Clip) currentSound;
return clip.isRunning();
}
else
return false;
}
}
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