From 60c2a55ec4e9e882c340cce5db6dab70d3301681 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@zdoom.fake>
Date: Fri, 26 Feb 2016 11:49:39 +0100
Subject: [PATCH] - added P_GetOffsetPosition calls to all needed functions.

---
 src/actor.h    | 52 +++++++++++++++++++++++++++++++++++++-------------
 src/portal.cpp |  2 +-
 src/portal.h   |  1 +
 3 files changed, 41 insertions(+), 14 deletions(-)

diff --git a/src/actor.h b/src/actor.h
index b9bc2d268..25caaaede 100644
--- a/src/actor.h
+++ b/src/actor.h
@@ -886,31 +886,57 @@ public:
 		return ret;
 	}
 
-	fixedvec2 Vec2Offset(fixed_t dx, fixed_t dy, bool absolute = false) const
+	fixedvec2 Vec2Offset(fixed_t dx, fixed_t dy, bool absolute = false)
 	{
-		fixedvec2 ret = { X() + dx, Y() + dy };
-		return ret;
+		if (absolute)
+		{
+			fixedvec2 ret = { X() + dx, Y() + dy };
+			return ret;
+		}
+		else return P_GetOffsetPosition(this, dx, dy);
 	}
 
 
-	fixedvec2 Vec2Angle(fixed_t length, angle_t angle, bool absolute = false) const
+	fixedvec2 Vec2Angle(fixed_t length, angle_t angle, bool absolute = false)
 	{
-		fixedvec2 ret = { X() + FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]),
-						  Y() + FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]) };
-		return ret;
+		if (absolute)
+		{
+			fixedvec2 ret = { X() + FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]),
+							  Y() + FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]) };
+			return ret;
+		}
+		else return P_GetOffsetPosition(this, FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]), FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]));
 	}
 
-	fixedvec3 Vec3Offset(fixed_t dx, fixed_t dy, fixed_t dz, bool absolute = false) const
+	fixedvec3 Vec3Offset(fixed_t dx, fixed_t dy, fixed_t dz, bool absolute = false)
 	{
-		fixedvec3 ret = { X() + dx, Y() + dy, Z() + dz };
-		return ret;
+		if (absolute)
+		{
+			fixedvec3 ret = { X() + dx, Y() + dy, Z() + dz };
+			return ret;
+		}
+		else
+		{
+			fixedvec2 op = P_GetOffsetPosition(this, dx, dy);
+			fixedvec3 pos = { op.x, op.y, Z() + dz };
+			return pos;
+		}
 	}
 
-	fixedvec3 Vec3Angle(fixed_t length, angle_t angle, fixed_t dz, bool absolute = false) const
+	fixedvec3 Vec3Angle(fixed_t length, angle_t angle, fixed_t dz, bool absolute = false)
 	{
-		fixedvec3 ret = { X() + FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]),
+		if (absolute)
+		{
+			fixedvec3 ret = { X() + FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]),
 						  Y() + FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]), Z() + dz };
-		return ret;
+			return ret;
+		}
+		else
+		{
+			fixedvec2 op = P_GetOffsetPosition(this, FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]), FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]));
+			fixedvec3 pos = { op.x, op.y, Z() + dz };
+			return pos;
+		}
 	}
 
 	void ClearInterpolation();
diff --git a/src/portal.cpp b/src/portal.cpp
index e9a2d9156..2a920f74c 100644
--- a/src/portal.cpp
+++ b/src/portal.cpp
@@ -712,7 +712,7 @@ fixedvec2 P_GetOffsetPosition(AActor *actor, fixed_t dx, fixed_t dy)
 		bool repeat;
 		do
 		{
-			it.init(actx, acty, dx, dy, PT_ADDLINES);
+			it.init(actx, acty, dx, dy, PT_ADDLINES|PT_DELTA);
 			intercept_t *in;
 
 			repeat = false;
diff --git a/src/portal.h b/src/portal.h
index 8665e192c..ef8cec98a 100644
--- a/src/portal.h
+++ b/src/portal.h
@@ -198,5 +198,6 @@ void P_TranslatePortalAngle(line_t* src, line_t* dst, angle_t& angle);
 void P_TranslatePortalZ(line_t* src, line_t* dst, fixed_t& z);
 void P_NormalizeVXVY(fixed_t& vx, fixed_t& vy);
 fixed_t P_PointLineDistance(line_t* line, fixed_t x, fixed_t y);
+fixedvec2 P_GetOffsetPosition(AActor *actor, fixed_t dx, fixed_t dy);
 
 #endif
\ No newline at end of file