[1.12.2] Horses disappear/teleport vast distances after being ridden on servers
Tschipp opened this issue · 16 comments
From @Whiskey-Sunshine on December 28, 2017 0:39
Expected Behavior
Horses stay where they were when dismounted (Both Animania draft horses and vanilla Minecraft horses)
Actual Behavior
Horses teleport in the direction you initially came from when being ridden for distances over 100m (Only caught this twice, they move absurdly fast, only on screen moving far into the distance ala enderman teleporting for 2-3 frames), or just outright disappear. Can rarely be found back where they were first mounted or spawned but not always. For example, white horse in saddle and diamond armor, rode from one location to another, disappeared when dismounted. Went back to the previous location and found the horse, still in saddle and armor, wandering around roughly where it had first spawned in the world. Also occurred with Animania draft horses several times (Named horses disappear, later found back where they were mounted or first spawned, again).
Steps to Reproduce
Ride a horse on a server more than 100m and dismount. Could be even shorter distances. The longer you ride and the faster the horse, the more likely it is to happen.
Version of Minecraft, version of Animania, Single Player or Server
Minecraft 1.12.2, Animania 1.4.3, Forge server 1.12.2-14.23.1.2560
Screenshots encouraged
Hard to get screenshots when the horse is there, and suddenly not.
Copied from original issue: capnkirok/animania#492
From @ghost on February 27, 2018 12:35
Just a note, I'm still noticing this behavior on 1.4.6. Just got off my draft stallion, turned around, fwoosh, gone.
From @capnkirok on March 17, 2018 8:46
Ok, thanks.
From @JkHowling on April 11, 2018 20:25
Just happened to me with a donkey with ALL MY STUFF ON IT. I dismounted to check out an igloo and poof went the donkey with all my loot :'D
From @capnkirok on April 12, 2018 8:23
Well, unfortunately, @JkHowling that means this is a vanilla MC problem (which someone else said above), and since we extend the vanilla horse, it appears we inherited it on Animania. Will complain to Mojang, see if there's any progress...
From @capnkirok on January 7, 2018 10:30
Weeeiird. Thanks for the report.
Sounds like a Server / Client desync.
From @olsonea on January 11, 2018 14:22
I can confirm this in vanilla 1.12.2.
From @capnkirok on January 12, 2018 13:33
@olsonea wait... are you saying this is a Vanilla MC issue?
From @ghost on January 15, 2018 7:32
I've ridden a few draft-horses over long distances, only to turn around after dismounting and notice they have 'disappeared'.
Often they will just immediately start walking back along the route you took, sideways, towards their mounting point (sometimes they'll stop 2~5 chunks away, view distance depending, sometimes they'll go all the way home) and randomly become invisible, approaching them seems to render them visible again, if you can remember which direction to look for them.
Easily testable with a super flat map in single-player.
Note: Not having this behavior without Animania installed, Vanilla +/-FML or otherwise.
From @capnkirok on January 15, 2018 10:4
Thanks @Draylynn for the repro steps.
From @olsonea on January 15, 2018 14:29
Yes, I am saying this is a Vanilla MC issue.
I have noticed that the horses will sometimes reappear if I exit the world,
and reload it.
On Fri, Jan 12, 2018 at 8:33 AM, Purplicious_Cow [email protected]
wrote:
@olsonea https://github.com/olsonea wait... are you saying this is a
Vanilla MC issue?—
You are receiving this because you were mentioned.
Reply to this email directly, view it on GitHub
https://github.com/capnkirok/animania/issues/492#issuecomment-357239204,
or mute the thread
https://github.com/notifications/unsubscribe-auth/AAjW8slsvcAWL1PkPnmCYutlyvi4KIzOks5tJ18ygaJpZM4RN6Tq
.
From @capnkirok on January 15, 2018 20:15
Ok, so re-reading the above, I can now explain why the horses immediately head back to their starting point... and also could explain the 'teleportation' issue. It would also explain similar behavior in vanilla.
When a horse (or any animal) is being ridden, the AI continues to execute (I just verified this). That means they they get cues to 'wander' or do whatever while they are being ridden. The paths are then set into the animal, but ignored because the animal has a 'rider'. When dismounted, the animal immediately tries to execute the older instructions... wandering back to some older coordinates. The server may intervene at some point... seeing the huge gap between the current location and the AI set location and compensate by teleporting... or just give up when the AI timer runs its course.
I've implemented some code in the development version that disables the AI when the horse is being ridden. This prevents any instructions coming in. Once dismounted, the AI is then re-enabled and all is back to normal.
This won't fix vanilla, but it will fix the Animania horses.
I can hear the noises my horse makes but I can't find it.Is it possible he is underground?
