Solved How to make the animated blue "world border" wall

I have been trying to create this animated wall that is in vanilla Minecraft however I don't know where to begin? Is it a block? If so what is the name of it? It looks something like this. I am trying to make it so that there can be multiple of these in 1 world.

 

@plisov
Its not a block. It is actually its own object called "WorldBoarder". And no, you can't have multiple of these per world. What exactly would you use these for?

 

I know a Skyblock server that uses these as barriers for islands. People are allowed to upgrade their borders to to make them bigger. Many people play on the same world. The reason I know that is because when I visit someone else's island that's on the same server, the game doesn't cut to that quick dirt loading screen. It automatically teleports me to their island. However when I go to spawn, it has that loading screen and I notice there are totally different people on that server. So these are two different servers. They have more servers. If I go to someone's island that isn't on my world it also shows the dirt loading screen. Every person has this type of border around their island.

 

@plisov
Either each player has their own world, or they are sending packets to each individual player so they register their own worldboarder. If it is the packets, they are using:
http://wiki.vg/Protocol#World_Border

 

Ahhh. That makes sense. They are most likely using packets. However I am not too familiar packets. I did find this piece of code however. But I don't quite understand how this is supposed to work.

Code:

protected void sendWorldBorderPacket(Player player, int warningBlocks) {
        EntityPlayer nmsPlayer = ((CraftPlayer) player).getHandle();
        WorldBorder playerWorldBorder = nmsPlayer.world.getWorldBorder();
        PacketPlayOutWorldBorder worldBorder = new PacketPlayOutWorldBorder(playerWorldBorder, PacketPlayOutWorldBorder.EnumWorldBorderAction.SET_WARNING_BLOCKS);
        try {
            Field field = worldBorder.getClass().getDeclaredField("i");
            field.setAccessible(true);
            field.setInt(worldBorder, warningBlocks);
            field.setAccessible(!field.isAccessible());
        } catch (Exception e) {
            e.printStackTrace();
        }
        nmsPlayer.playerConnection.sendPacket(worldBorder);
    }

 

@plisov
Because I do not know which version of MC you are running, I cannot say which fields you need to modify. I would recommend loop through all the fields and try to match their value/ classtype to those in the link.

 

I'm going to be using the latest version of Minecraft everytime I make my plugins. I've put this code into my class and I've edited it. However I don't know how to set the radius of how big to show the border. I log in to the server and it isn't there. I do also call it.

 

@plisov
I just remembered that you can use protocol lib. Using it, you can use its wrappers to easily create the world boarder:

Code:

WrapperPlayServerWorldBoarder packet = new WrapperPlayServerWorldBoarder();
packet.setAction(3);//creating the world boarder
packet.setX(CENTER X);
packet.setZ(CENTER Z);
....

packet.sendPacket(player);

 

That isn't working. It says That WrapperPlayerServerWorldBorder Or WrapperPlayerServerWorldBoarder isn't a class. Says I must create it. I have ProtocolLib in my Buildpath

 

@plisov
My mistake, it is actually:
PacketPlayOutWorldBorder

So, just replace Server with Out, as shown here>:
https://www.spigotmc.org/threads/world-border-in-1-8.31313/#post-358567

 

Ah. Okay that works. However now .setAction(), .setX and .setZ are red. I look to see what packet has and it doesn't have anything but a few things like a(), b(), equals(), etc.

POST EDIT: Looking at the link right now. I'll see what I can do.

I found this

Code:

                PacketPlayOutWorldBorder border = new PacketPlayOutWorldBorder(PacketPlayOutWorldBorder.Action.INITIALIZE);
                border.setX(Bukkit.getWorld("SkyRealms").getSpawnLocation().getX());
                border.setZ(Bukkit.getWorld("SkyRealms").getSpawnLocation().getZ());
                border.setRadius(20 / 2);
                border.setSpeed(1L);
                border.setPortalBoundary(10);
                border.setWarningTime(20);
                border.setWarningBlocks(2);

However all the things after border. are red. They don't exist. Also Action is red. No imports.
@Zombie_Striker

 

@timtower @Zombie_Striker I'm not understanding something. How am I able to use it if it is obfuscated? I'm looking at this, hopefully this is what I should be looking at. Is there a class anywhere out there that I could put into my project that is not obfuscated?

Current code

Code:

                PacketPlayOutWorldBorder border = new PacketPlayOutWorldBorder(null, PacketPlayOutWorldBorder.EnumWorldBorderAction.INITIALIZE);
                border.setX(Bukkit.getWorld("SkyRealms").getSpawnLocation().getX());
                border.setX(Bukkit.getWorld("SkyRealms").getSpawnLocation().getX());
                border.setZ(Bukkit.getWorld("SkyRealms").getSpawnLocation().getZ());
                border.setRadius(20 / 2);
                border.setSpeed(1L);
                border.setPortalBoundary(10);
                border.setWarningTime(20);
                border.setWarningBlocks(2);

 

Here is an example. I play on a server that has exactly what I'm talking about. Look in the chat when I type as I explain more in detail.

Video

POST EDIT:
This may clear a few things up. I'm trying to actually set the world border, I'm only trying to get the effect of it. Meaning you can still build behind that "border" / effect. What I'm trying to figure out is how to draw that effect around a set coordinate * a set radius.

@timtower @Zombie_Striker

 

https://github.com/ysl3000/WorldBorderAPI1.8-
Hope y'll find your solution.

 

Thank you! This is exactly what I was looking for!