From bc60e4e0796f998566108e42d1bde548bec15e38 Mon Sep 17 00:00:00 2001
From: BurgerLUA <8602857+BurgerLUA@users.noreply.github.com>
Date: Tue, 16 Dec 2025 19:00:08 -0800
Subject: [PATCH] Fix signal unregistration in grapple gun on hit (#94489)

## About The Pull Request

Changes the unregistering of COMSIG_PROJECTILE_ON_HIT to
COMSIG_PROJECTILE_SELF_ON_HIT because COMSIG_PROJECTILE_ON_HIT isn't
used anywhere in grapple code but COMSIG_PROJECTILE_SELF_ON_HIT is.

See lines 70 and 71 for what I mean.

## Why It's Good For The Game

Fixes good.

## Changelog

:cl: BurgerBB
fix: Fix signal unregistration in grapple gun on hit.
/:cl:
---
 code/modules/mining/equipment/grapple_gun.dm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/code/modules/mining/equipment/grapple_gun.dm b/code/modules/mining/equipment/grapple_gun.dm
index 5355fe6bbb6..226417065f9 100644
--- a/code/modules/mining/equipment/grapple_gun.dm
+++ b/code/modules/mining/equipment/grapple_gun.dm
@@ -84,7 +84,7 @@
 /obj/item/grapple_gun/proc/on_grapple_hit(datum/source, atom/movable/firer, atom/target, Angle)
 	SIGNAL_HANDLER
 
-	UnregisterSignal(source, list(COMSIG_PROJECTILE_ON_HIT, COMSIG_PREQDELETED))
+	UnregisterSignal(source, list(COMSIG_PROJECTILE_SELF_ON_HIT, COMSIG_PREQDELETED))
 	QDEL_NULL(zipline)
 	var/mob/living/user = zipliner?.resolve()
 	if(isnull(user) || isnull(target))