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rojina
rojina wrote ...

2025/3/21

how to stop music after changing a few times of world ?

rojina rojina

2025/3/21

#
hello, i start a music in my first world, but then i change world a few times. after i arrive a certain world i want the music to stop, i want to change it how do i do that ? sorry if my english is bad, its not my first language lol
danpost danpost

2025/3/22

#
rojina wrote...
start a music in my first world, but then i change world a few times. after i arrive a certain world i want the music to stop, i want to change it how do i do that ?
Use the following ( I named first world MyWorld and sound file intro.mp3 ): 
public static GreenfootSound bgSound;
and in constructor ( public MyWorld() ): 
bgSound = new GreenfootSound("intro.mp3");
bgSound.play();
In any class in your project, you can then use: 
MyWorld.bgSound.stop();
To change it, replace what the field references:: 
MyWorld.bgSound = new GreenfootSound("replacement.mp3");
MyWorld.bgSound.play();
danpost danpost

2025/3/22

#
You could go as far as putting the following the the MyWorld class: 
public static void setBackgroundSound(String name) {
    if (bgSound != null) bgSound.stop();
    bgSound = null;
    if (name == null) return;
    bgSound = new GreenfootSound(name);
    bgSound.play();
}
In the constructor, you could then just have: 
setBackgroundSound("intro.mp3");
Then, to change it from anywhere: 
MyWorld.setBackgroundSound("replacement.mp3);
You can also stop and discard the background sound altogether with: 
myWorld.setBackgroundSound(null);
rojina rojina

2025/3/23

#
thank you for your answer! i tried the second method you gave me and it works ! you are the best
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