How to automatically update the sidebar

Plugins Plugin Development
1

I put the sidebar with the following code.

Code 
@Listener
public void onEntity(ClientConnectionEvent.Join e) {
    Player p = e.getTargetEntity();
    Scoreboard sb = Scoreboard.builder().build();
    Objective obj = Objective.builder().criterion(Criteria.DUMMY).displayName(Text.of("§c۞ §b§lSky§4§lTech §c۞")).name("MainSideBoard").build();
    
    Score s1 = obj.getOrCreateScore(Text.of("§0-----------------", ""));
    s1.setScore(7);
    Score s2 = obj.getOrCreateScore(Text.of("§3Ваш ник: §f", p.getName()));
    s2.setScore(6);
    Score s3 = obj.getOrCreateScore(Text.of("§0-----------------", " "));
    s3.setScore(5);
    Score s4 = obj.getOrCreateScore(Text.of("§2Ваш баланс: §6", getPlayerBalance(p)));
    s4.setScore(4);
    Score s5 = obj.getOrCreateScore(Text.of("§0-----------------", "  "));
    s5.setScore(3);
    Score s6 = obj.getOrCreateScore(Text.of("§bОнлайн: §9", Sponge.getServer().getOnlinePlayers().size(), "§7/§9", Sponge.getServer().getMaxPlayers()));
    s6.setScore(2);
    Score s7 = obj.getOrCreateScore(Text.of("§0-----------------", "   "));
    s7.setScore(1);

    sb.addObjective(obj);
    sb.updateDisplaySlot(obj, DisplaySlots.SIDEBAR);
    p.setScoreboard(sb);
}

I need to set up automatic updates Player values balance and online on server in real time.

2

Because there is no event for balance update that part would be difficult to update in real time. You could listen to a event that is always going on such as EntityMoveEvent and then update everyones scoreboard from that. Or you could setup a scheduler that runs every 5ticks that updates everyones scoreboard.

As for updating the online players. I would use the event you currently have and run the code you currently have but I would update every online players scoreboard not just the player who joins.

Sponge.getServer().getOnlinePlayers();

That will get a collection of online players. After that use either

stream().foreach(p ->

Or

for(Player player : players) {

To loop through each player.

3

I was able to do the required function with the help of the scheduler. Thank you.

4

If use the scheduler, the server memory overflow occurs. I even did clear Scoreboard before updating it, but it did not help.

 public void setScoreboard (Player p) {
    Task.Builder taskBuilder = Task.builder();
	taskBuilder.execute(() -> {
	p.getScoreboard().getScores().clear();
	Scoreboard sb = Scoreboard.builder().build();
	Objective obj = Objective.builder().criterion(Criteria.DUMMY).displayName(Text.of("§c۞ §b§lSky§4§lTech §c۞")).name("MainSideBoard").build();
	Score s1 = obj.getOrCreateScore(Text.of("§0-----------------", ""));
	    s1.setScore(7);
	    Score s2 = obj.getOrCreateScore(Text.of("§6Ваш ник: §f", p.getName()));
	    s2.setScore(6);
	    Score s3 = obj.getOrCreateScore(Text.of("§0-----------------", " "));
	    s3.setScore(5);
	    Score s4 = obj.getOrCreateScore(Text.of("§6Ваш баланс: §2$", getPlayerBalance(p)));
	    s4.setScore(4);
	    Score s5 = obj.getOrCreateScore(Text.of("§0-----------------", "  "));
	    s5.setScore(3);
	    Score s6 = obj.getOrCreateScore(Text.of("§6Онлайн: §9", Sponge.getServer().getOnlinePlayers().size(), "§7/§9", Sponge.getServer().getMaxPlayers()));
	    s6.setScore(2);
	    Score s7 = obj.getOrCreateScore(Text.of("§0-----------------", "   "));
	    s7.setScore(1);
	    sb.addObjective(obj);
	    sb.updateDisplaySlot(obj, DisplaySlots.SIDEBAR);
	    p.setScoreboard(sb);
	})
	.interval(2, TimeUnit.SECONDS)
	.submit(this);
}