From d74584e5b247c057ad6192f6da0fb8a29ce74a90 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <c.oelckers@zdoom.fake>
Date: Mon, 13 Jun 2016 13:58:04 +0200
Subject: [PATCH] - fixed: DAnimatedDoor must not start an interpolation on the
 door sector's ceiling.

---
 src/dsectoreffect.cpp | 4 ++--
 src/dsectoreffect.h   | 2 +-
 src/p_doors.cpp       | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/dsectoreffect.cpp b/src/dsectoreffect.cpp
index 180aa9e81..d33eeb061 100644
--- a/src/dsectoreffect.cpp
+++ b/src/dsectoreffect.cpp
@@ -126,11 +126,11 @@ DMovingCeiling::DMovingCeiling ()
 {
 }
 
-DMovingCeiling::DMovingCeiling (sector_t *sector)
+DMovingCeiling::DMovingCeiling (sector_t *sector, bool interpolate)
 	: DMover (sector)
 {
 	sector->ceilingdata = this;
-	interpolation = sector->SetInterpolation(sector_t::CeilingMove, true);
+	if (interpolate) interpolation = sector->SetInterpolation(sector_t::CeilingMove, true);
 }
 
 bool sector_t::MoveAttached(int crush, double move, int floorOrCeiling, bool resetfailed)
diff --git a/src/dsectoreffect.h b/src/dsectoreffect.h
index 3a564afc4..792771fb6 100644
--- a/src/dsectoreffect.h
+++ b/src/dsectoreffect.h
@@ -49,7 +49,7 @@ class DMovingCeiling : public DMover
 {
 	DECLARE_CLASS (DMovingCeiling, DMover)
 public:
-	DMovingCeiling (sector_t *sector);
+	DMovingCeiling (sector_t *sector, bool interpolate = true);
 protected:
 	DMovingCeiling ();
 };
diff --git a/src/p_doors.cpp b/src/p_doors.cpp
index b122768bb..d6a5f3a44 100644
--- a/src/p_doors.cpp
+++ b/src/p_doors.cpp
@@ -526,7 +526,7 @@ DAnimatedDoor::DAnimatedDoor ()
 }
 
 DAnimatedDoor::DAnimatedDoor (sector_t *sec)
-	: DMovingCeiling (sec)
+	: DMovingCeiling (sec, false)
 {
 }