Danger

The Adventure docs are currently a work in progress and supplement the Javadocs. Some areas may have limited coverage or may not be entirely up to date. Feel free to join our Discord if you have any questions.

Boss Bars

Constructing a Boss Bar

Boss Bars are composed of:

• A component used for the title of the boss bar

• A number from 0 to 1 used to determine how full the boss bar should be

• A color, will be downsampled for clients <1.9

• An overlay that determines the amount of visual segments on the boss bar

Examples:

private @Nullable BossBar activeBar;

public void showMyBossBar(final @NonNull Audience target) {
  final Component name = Component.text("Awesome BossBar");
  // Creates a red boss bar which has no progress and no notches
  final BossBar emptyBar = BossBar.bossBar(name, 0, BossBar.Color.RED, BossBar.Overlay.PROGRESS);
  // Creates a green boss bar which has 50% progress and 10 notches
  final BossBar halfBar = BossBar.bossBar(name, 0.5f, BossBar.Color.GREEN, BossBar.Overlay.NOTCHED_10);
  // etc..
  final BossBar fullBar = BossBar.bossBar(name, 1, BossBar.Color.BLUE, BossBar.Overlay.NOTCHED_20);

  // Send a bossbar to your audience
  target.showBossBar(fullBar);

  // Store it locally to be able to hide it manually later
  this.activeBar = fullBar;
}

public void hideActiveBossBar(final @NonNull Audience target) {
  target.hideBossBar(this.activeBar);
  this.activeBar = null;
}

Changing an active Boss Bar

Boss bars are mutable and listen for changes on their object, the in-game view will change automatically without having to manually refresh it!

Therefore, if this boss bar is currently active

final BossBar bossBar = BossBar.bossBar(Component.text("Cat counter"), 0, BossBar.Color.RED, BossBar.Overlay.PROGRESS);

and BossBar.name() with a component is called

final Component newText = Component.text("Duck counter");

bossBar.name(newText);

the boss bar will be updated automatically. The same thing goes for progress, color and overlay.