Snapper dancing on the hill

[mztulip]

Describe the bug
The side of Khorinis entrance where snappers are present, one o them is rotating on the hill side.

Save-game/Log-file/Screenshots/Video

snapper_save_slot_17.zip

strip_zebacz_2026-01-03.22-48-38.mp4

I do not know how mechanics behind this works. I am not game developer but with help I can try to debug, find, or repair something.

Game version: v1.0.3549
System: Archlinux
CPU: AMD Ryzen 5 5500U
GPU: AMD Radeon 7 Graphics (Renoir)

[Try]

Hi, @mztulip !

This case looks a lot like 'artifact' of full world simulation, described here: #657

Basically problem is, that idle-animation in gothic accumulates non-zero offset over time and heuristic used in 1.0.3549 wasn't good enough to avoid it in many cases.
I've pushed a new one today, but unfortunately it wont "fix" already displaced monsters.

[mztulip]

2026-01-06.11-19-50.mp4

At least it stopped rotating now.
Thanks

[Try]

At least it stopped rotating now.

Like I've mention: patch should prevent displacement, but wont reposition npc's.
I'm currently testing reposition in background, you can also check it out, if you would like to:

diff --git a/game/world/objects/npc.cpp b/game/world/objects/npc.cpp
index e3a92e40..0e522fca 100644
--- a/game/world/objects/npc.cpp
+++ b/game/world/objects/npc.cpp
@@ -471,8 +471,9 @@ bool Npc::resetPositionToTA() {
   if(!isPlayer())
     setInteraction(nullptr,true);

-  if(routines.empty() && !isPlayer())
-    return currentTaPoint()!=nullptr;
+  // return monsters to their way-points
+  // if(routines.empty() && !isPlayer())
+  //   return currentTaPoint()!=nullptr;

   attachToPoint(nullptr);
   clearAiQueue();

This change will reset monsters after next sleep (or any time-skip)

[mztulip]

It works, after sleeping, snapper returned to normal position. Thanks