From 0ecfc682058e6aba55ef7683a16c36b799f1d066 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@zdoom.fake>
Date: Tue, 16 Feb 2016 22:56:36 +0100
Subject: [PATCH] - fixed conditions for PortalBlocksView. Created a new
 function PortalBlocksSight that's relevant for playsim-related sight checks.

---
 src/portal.h | 7 +++++++
 src/r_defs.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/src/portal.h b/src/portal.h
index 40c4a30fc5..b37ee3b7b8 100644
--- a/src/portal.h
+++ b/src/portal.h
@@ -205,6 +205,13 @@ inline int line_t::getPortalAlignment() const
 }
 
 inline bool sector_t::PortalBlocksView(int plane)
+{
+	if (SkyBoxes[plane] == NULL) return true;
+	if (SkyBoxes[plane]->special1 != SKYBOX_LINKEDPORTAL) return false;
+	return !!(planes[plane].Flags & (PLANEF_NORENDER | PLANEF_DISABLED | PLANEF_OBSTRUCTED));
+}
+
+inline bool sector_t::PortalBlocksSight(int plane)
 {
 	if (SkyBoxes[plane] == NULL || SkyBoxes[plane]->special1 != SKYBOX_LINKEDPORTAL) return true;
 	return !!(planes[plane].Flags & (PLANEF_NORENDER | PLANEF_DISABLED | PLANEF_OBSTRUCTED));
diff --git a/src/r_defs.h b/src/r_defs.h
index 920c1f3f86..13a20cade5 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -793,6 +793,7 @@ struct sector_t
 	}
 
 	bool PortalBlocksView(int plane);
+	bool PortalBlocksSight(int plane);
 	bool PortalBlocksMovement(int plane);
 	bool PortalBlocksSound(int plane);