From e81641dd014c26ce030f52a6d7f05e68fde698c0 Mon Sep 17 00:00:00 2001
From: Marisa Kirisame <marisa@sayachan.org>
Date: Sun, 7 Jun 2020 11:51:59 +0200
Subject: [PATCH] Hotfix: LineTrace now reports the correct number of portal
 crossings.

---
 src/playsim/p_map.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/playsim/p_map.cpp b/src/playsim/p_map.cpp
index 5a4593bd6..450f09d5c 100644
--- a/src/playsim/p_map.cpp
+++ b/src/playsim/p_map.cpp
@@ -4866,7 +4866,8 @@ int P_LineTrace(AActor *t1, DAngle angle, double distance,
 		outdata->HitLocation = trace.HitPos;
 		outdata->HitDir = trace.HitVector;
 		outdata->Distance = trace.Distance;
-		outdata->NumPortals = TData.NumPortals;
+		// [MK] Subtract two "bogus" portal crossings used internally by trace code
+		outdata->NumPortals = TData.NumPortals-2;
 		outdata->HitType = trace.HitType;
 	}
 	return ret;