[SPIGOT-7066] Non default end worlds do not have a EnderDragonBattle anymore in 1.19! Created: 16/Jun/22  Updated: 25/Dec/24  Resolved: 18/Jun/22

Status: Resolved
Project: Spigot
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: Major
Reporter: Jeppa Assignee: Doc
Resolution: Fixed Votes: 0
Labels: EnderDragonBattle
Environment:

 

Version: 3528-Spigot-56be6a8-031eaad (MC: 1.19) (Implementing API version 1.19-R0.1-SNAPSHOT)
Guidelines Read: Yes

 Description   

There seems to be a bug with non default end worlds:

org.bukkit.World#getEnderDragonBattle

and

net.minecraft.server.level.WorldServer#C (= getDragonBattle in 1.19 NMS)

both always return null !

 

With the default end world (e.g. world_the_end) those commands return the correct

org.bukkit.boss.DragonBattle / org.bukkit.craftbukkit.v1_19_R1.boss.CraftDragonBattle / net.minecraft.world.level.dimension.end.EnderDragonBattle !

 

The check in net.minecraft.server.level.WorldServer (line 302) has changed in 1.19 !

In non default end worlds no DragonBattle is initialized ...

 Comments   
Comment by Jeppa [ 16/Jun/22 ]

Some simple code to test it:

   @EventHandler
   public void onPlayerJoinEnd(PlayerTeleportEvent event){
	   World theWorld = event.getTo().getWorld();
	   if (theWorld.getEnvironment() == Environment.THE_END) {
		   plugin.getLogger().warning("\nWorld entered:"+theWorld.getName());
		   plugin.getLogger().warning("\nDragonBattle (NMS):"+((org.bukkit.craftbukkit.v1_19_R1.CraftWorld)theWorld).getHandle().C());
		   plugin.getLogger().warning("\nDragonBattle (API):"+theWorld.getEnderDragonBattle());
	   }
   }
Comment by Doc [ 16/Jun/22 ]

Based in the provided MultiverseCore issue i make a PR with a fix.

https://hub.spigotmc.org/stash/projects/SPIGOT/repos/craftbukkit/pull-requests/1072/overview

Comment by Ernst August Lehmann [ 16/Jun/22 ]

This issue is also replicable using the Multiverse plugin, there's a bug report regarding it on their GitHub.

Comment by Jeppa [ 16/Jun/22 ]

I'll not share a plugin that is not working the way it should

I'll have a look and try to put some code in here that can be used to test it...

Comment by Cynthia Yantis [ 16/Jun/22 ]

Are you able to share that plugin with us for testing?

Comment by Jeppa [ 16/Jun/22 ]

No code example, but i can test it within my plugin...

Comment by Doc [ 16/Jun/22 ]

For any case you have a plugin/code for test the issue and possibles fixs?

Comment by Doc [ 16/Jun/22 ]

I look and yeah 1.19 the boolean for dragon battle in dimension_type was removed and now only validate the world and dimension in default worlds...

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