Solved Preventing Scoreboards from Flickering - Changing Objectives

I'm creating a scoreboard and I need the scores to be text, not a number. So, I have an objective with different scores that have text containing the needed information. However, if I want to change the text, I have to remove the objective and create a new one with the updated text (well, I think I have to do this).

So this all works and stuff, but when I test this on a different computer other than my own, the scoreboard appears to flash when it's updated (which happens every 2 seconds and on a player join/quit event).

There's no point in posting code since I'm asking for ideas on what to do, and I'm not asking for the code itself.

 

Threads.
-leaves-
No but for real, Async and threading (done right) will stop this.

 

calebbfmv Well since we're talking about threading now, how would I achieve this (considering Async Bukkit threads cannot access the API)? Any ideas (not code)?

 

Bionicrm
Erm, creating and managing your own thread to handle scoreboards.

 

calebbfmv I don't think this is enough information. I know that you can't access the API within an async thread.

 

Bionicrm
You can't? I do not think so, I do it just fine.....

 

calebbfmv Then please explain further.

 

Bionicrm
I can't, without sending code. I know this works the exact way I run it, Async, on my own Thread. It is just fine. Bukkit doesn't want you to, but you can.

 

calebbfmv Then share your code. I originally said "not code" because I didn't just want a quick spoon-feed, but if I can't understand what you mean by you just saying it, then yes, I'll need to see some code. Thanks

 

Bionicrm
When I get a chance, I will.

 

Bionicrm did you ever figure this out? solutions? because I'm having the same issue xD

 

There's no direct solution. All you have to do is make sure that you only update the scoreboard when you absolutely need to. What I was doing was updating the scoreboard every few seconds, regardless of if there was a change. The flash is more noticeable on higher latencies.

Edit: Have a look at my latest post.

 

Bionicrm

I developed some scoreboard plugins and I never experienced the issue, but the receivers of the plugin did.. I couldn't fix it because I couldn't see it..

No solution AFAIK, aside from what you've said.

 

Bionicrm setDisplayName() instead of setting new objectives perhaps

 

oscarshi1995 ZeusAllMighty11 Apparently there is a direct solution Have a look here for the log: http://sbnc.khobbits.co.uk/log/logs/old/bukkitdev_[2014-06-09].htm

What that is saying is: when you give the client a new objective with nothing on it, instantly the client will render that blank scoreboard (showing up as nothing). However, if you give the client the new objective with the new and updated information already provided, the the blink should be removed.

Thanks Wolvereness

 

Thats the thing, I did provide a Objective with everything already in it but it STILL blinks lol

Code:java

private void sendUpdate(Player player, boolean complete) {
        final Objective oldobjective = player.getScoreboard().getObjective(DisplaySlot.SIDEBAR);
 
        final Objective objective = player.getScoreboard().registerNewObjective(UUID.randomUUID().toString().substring(0,16), DUMMY_CRITERIA);
 
            final Iterator<Map.Entry<String, String>> iter = Settings.getItems();
            double a = 0;
            while (iter.hasNext()) {
                final Map.Entry<String, String> entry = iter.next();
                final String title = entry.getKey();
                final String variable = entry.getValue();
                try {
                    String old = "";
                    for(String i : objective.getScoreboard().getEntries()){
                        if(i.contains(ChatColor.translateAlternateColorCodes('&', title))) old = i;
                    }
                    final double score = replaceManager.getScore(player, variable);
                    sendScore(objective, title, score, complete,++a, old);
                } catch (UnknownVariableException ex) {
                    //Remove the variable becaue we can't replace it
                    iter.remove();
 
                    plugin.getLogger().info(Lang.get("unknownVariable", variable));
                    plugin.getLogger().log(Level.FINE, null, ex);
                }
            }
        objective.setDisplayName(Settings.getTitle());
        objective.setDisplaySlot(DisplaySlot.SIDEBAR);
        oldobjective.unregister();
    }

Current code I am using, It still flickers...

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Bionicrm Any ideas?

 

halp? D:

 

oscarshi1995 You are forever alone lol.

 

Do I HAVE to fiddle with packets with this? or does the bukkit have some api for this?

 

Oh goodness! I have just the right thing. I'm using it right now in my game. I just made a method to update individual scoreboards of the players in-game, and then I also made it so I can loop through an arraylist of the playerdata and update ALL player scoreboards using the same method

 

You don't need to remove the objective, only the score of the 'Player' with the name you use as text value

 

AronTheGamer Ive tried that as well, but you can see on the client the process of removing the old name and putting in the new name like at some times you would have a extra entry for a tick and other times 1 less for a tick

 

Can I see what you did?

 

oscarshi1995 When I get some time on the computer I'll give you some code, it should work but mind you, it will be untested, but you will get the gist of it

 

I am having this issue too, please?

 

Sorry about the long wait, computer crashed and I had to get a new one, here is some code that I used to update the scoreboards:

Code:java

    public void updateScoreboard(Player p) {
 
        SimpleScoreboard ss = new SimpleScoreboard(ChatColor.DARK_GRAY + "[" + ChatColor.GOLD + "Golden"
+ ChatColor.YELLOW + "Gun" + ChatColor.DARK_GRAY + "]");
        ss.add("===================");
        ss.blankLine();
 
        ss.add(ChatColor.YELLOW + "Current Map:");
        ss.add("" + mapName);
        ss.blankLine();
 
        ss.add(ChatColor.YELLOW + "Current Players:");
        ss.add("" + currentPlayers);
        ss.blankLine();
 
        ss.add(ChatColor.YELLOW + "Kills:");
        ss.add("" + GameListener.getInstance().getPlayerKillsMap().get(p.getName()));
        ss.blankLine();
 
        ss.add(ChatColor.YELLOW + "Phase:");
        ss.add("Pre-Alpha");
        ss.blankLine();
 
        ss.add("===================");
        ss.build();
 
        ss.send(p);
    }

And this is the link to SimpleScoreboard.java, which you WILL need to get the above code working: link

Btw, that code is made by someone else on the forums, and that person is @RainoBoy97