From ba07ebeb3057d40e500ce0a9f6ad310766bfc7f4 Mon Sep 17 00:00:00 2001
From: Kano <89972582+kano-dot@users.noreply.github.com>
Date: Wed, 14 Jan 2026 20:01:07 +0300
Subject: [PATCH] Fixes AI eye being unable to traverse Z-levels (#21708)

## About PR

Fixes a bug introduced in #21626. I misunderstood the purpose of a check
which was allowing eyeobjects to Z-travel, my bad!

- Fixes #21695
---
 code/modules/mob/abstract/freelook/eye.dm       | 2 +-
 code/modules/multiz/movement.dm                 | 5 +++++
 html/changelogs/kano-dot-look-me-in-the-eye.yml | 6 ++++++
 3 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 html/changelogs/kano-dot-look-me-in-the-eye.yml

diff --git a/code/modules/mob/abstract/freelook/eye.dm b/code/modules/mob/abstract/freelook/eye.dm
index 1458e97390b..0e95bf88024 100644
--- a/code/modules/mob/abstract/freelook/eye.dm
+++ b/code/modules/mob/abstract/freelook/eye.dm
@@ -150,7 +150,7 @@
 		sprint = initial
 	return 1
 
-// If the eye movement needs to be restricted by any means, override this
+/// If the eye movement needs to be restricted by any additional means, override this.
 /mob/abstract/eye/proc/check_allowed_movement(turf/step)
 	return TRUE
 
diff --git a/code/modules/multiz/movement.dm b/code/modules/multiz/movement.dm
index b8544bcf296..edfc57ee8e6 100644
--- a/code/modules/multiz/movement.dm
+++ b/code/modules/multiz/movement.dm
@@ -31,6 +31,11 @@
  *			FALSE otherwise.
  */
 /mob/proc/zMove(direction)
+	// If the calling mob has an active eyeobj reference, we move it instead.
+	// This is important because zMove is called from the actual mob and not the eyeobj they're controlling.
+	if(eyeobj)
+		return eyeobj.zMove(direction)
+
 	// Check if we can actually travel a Z-level.
 	if (!can_ztravel(direction))
 		to_chat(src, SPAN_WARNING("You lack means of travel in that direction."))
diff --git a/html/changelogs/kano-dot-look-me-in-the-eye.yml b/html/changelogs/kano-dot-look-me-in-the-eye.yml
new file mode 100644
index 00000000000..f2c31afa036
--- /dev/null
+++ b/html/changelogs/kano-dot-look-me-in-the-eye.yml
@@ -0,0 +1,6 @@
+author: Kano
+
+delete-after: True
+
+changes:
+  - bugfix: "Fixed an issue preventing the AI eye from traversing Z-levels."