[SPIGOT-5252] PlayerPortalEvent causes spurious PlayerTeleportEvent TeleportCause.UNKNOWN with wrong world Created: 07/Aug/19  Updated: 12/Jan/20  Resolved: 12/Jan/20

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

Type: Bug Priority: Minor
Reporter: totemo Assignee: Unassigned
Resolution: Fixed Votes: 9
Labels: 1.14, Craftbukkit
Environment:
  • Linux x86_64
  • OpenJDK Runtime Environment (build 1.8.0_212-b04)
  • Single test plugin for logging `PlayerTeleportEvent` and `PlayerPortalEvent`. No other plugins loaded.

Version: git-Spigot-e5b1b5d-1ec1b05 (MC: 1.14.4)
Guidelines Read: Yes

 Description   

Spigot raises spurious `PlayerTeleportEvent`s when players travel through portals. This is particularly a problem for the WorldBorder plugin.

With the server instrumented with a plugin containing the following code:

    @EventHandler()
    public void onPlayerTeleport(PlayerTeleportEvent event) {
        plugin.getLogger().info("onPlayerTeleport(): " + event.getCause() +
                                " from " + formatBlockLoc(event.getFrom()) +
                                " to " + formatBlockLoc(event.getTo()));
    }

and similar logging for `PlayerPortalEvent`, the logged output is:

onPlayerPortal(): NETHER_PORTAL from (world_nether,296,68,321) to (world,2370,68,2568)
onPlayerTeleport(): NETHER_PORTAL from (world_nether,296,68,321) to (world,2370,68,2568)
onPlayerTeleport(): UNKNOWN from (world_nether,2370,68,2568) to (world_nether,2332,65,2466) 
onPlayerTeleport(): UNKNOWN from (world,2332,65,2466) to (world,2332,65,2466)

The second to last `PlayerTeleportEvent` has `TeleportCause.UNKNOWN`, overworld X, Y and Z but says that those coordinates apply in the nether, which is the wrong world.

This is possibly related to #1807, but not the same.

 Comments   
Comment by Brett Flannigan [ 12/Jan/20 ]

I have little enough free time to spend on my own projects, let alone to try hunting down bugs in other peoples' projects.

Comment by md_5 [ 12/Jan/20 ]

Nothing was stopping you from fixing it Brett

Comment by Mitch Talmadge [ 18/Dec/19 ]

There's a lot more reports on the plugin's webpage, the forums, etc.

See here for example, three posts in a row about the problem: https://www.spigotmc.org/threads/worldborder.339635/page-9#post-3609902

 

Comment by Brett Flannigan [ 18/Dec/19 ]

I must say I'm disappointed this apparently hasn't been fixed yet.

 

Comment by Mitch Talmadge [ 18/Dec/19 ]

I'm having this same issue on 1.15. Linking to an article which has more detail: https://www.gitmemory.com/issue/Brettflan/WorldBorder/131/519059869

We have a normal world with 12k radius, nether world with 1.5k radius, and even if the nether portal is very much within this radius, the fake teleport says that the player is at the nether outside of bounds and they get put inside blocks in the normal world.

Comment by Brett Flannigan [ 15/Aug/19 ]

Very similar bug to this one from quite some time ago:

https://hub.spigotmc.org/jira/browse/SPIGOT-1903

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