diff --git a/src/am_map.cpp b/src/am_map.cpp
index b0ae28a13..28bd27aff 100644
--- a/src/am_map.cpp
+++ b/src/am_map.cpp
@@ -1974,8 +1974,8 @@ void AM_drawSubsectors()
 			}
 			else
 			{
-				secx = FIXED2DBL(sec->soundorg[0]);
-				secy = FIXED2DBL(sec->soundorg[1]);
+				secx = FIXED2DBL(sec->centerspot.x);
+				secy = FIXED2DBL(sec->centerspot.y);
 			}
 			seczb = floorplane->ZatPoint(secx, secy);
 			seczt = sec->ceilingplane.ZatPoint(secx, secy);
diff --git a/src/fragglescript/t_func.cpp b/src/fragglescript/t_func.cpp
index e30c76326..677694193 100644
--- a/src/fragglescript/t_func.cpp
+++ b/src/fragglescript/t_func.cpp
@@ -1615,7 +1615,7 @@ void FParser::SF_FloorHeight(void)
 				DFloorChanger * f = new DFloorChanger(&sectors[i]);
 				if (!f->Move(
 					abs(dest - sectors[i].CenterFloor()), 
-					sectors[i].floorplane.PointToDist (CenterSpot(&sectors[i]), dest), 
+					sectors[i].floorplane.PointToDist (sectors[i].centerspot, dest),
 					crush? 10:-1, 
 					(dest > sectors[i].CenterFloor()) ? 1 : -1))
 				{
@@ -1699,7 +1699,7 @@ void FParser::SF_MoveFloor(void)
 			// Don't start a second thinker on the same floor
 			if (sec->floordata) continue;
 			
-			new DMoveFloor(sec,sec->floorplane.PointToDist(CenterSpot(sec),destheight),
+			new DMoveFloor(sec,sec->floorplane.PointToDist(sec->centerspot,destheight),
 				destheight < sec->CenterFloor() ? -1:1,crush,platspeed);
 		}
 	}
@@ -1763,7 +1763,7 @@ void FParser::SF_CeilingHeight(void)
 				DCeilingChanger * c = new DCeilingChanger(&sectors[i]);
 				if (!c->Move(
 					abs(dest - sectors[i].CenterCeiling()), 
-					sectors[i].ceilingplane.PointToDist (CenterSpot(&sectors[i]), dest), 
+					sectors[i].ceilingplane.PointToDist (sectors[i].centerspot, dest), 
 					crush? 10:-1,
 					(dest > sectors[i].CenterCeiling()) ? 1 : -1))
 				{
@@ -1807,8 +1807,7 @@ public:
 		m_Silent = silent;
 		m_Type = DCeiling::ceilLowerByValue;	// doesn't really matter as long as it's no special value
 		m_Tag=tag;			
-		vertex_t * spot=CenterSpot(sec);
-		m_TopHeight=m_BottomHeight=sec->ceilingplane.PointToDist(spot,destheight);
+		m_TopHeight=m_BottomHeight=sec->ceilingplane.PointToDist(sec->centerspot,destheight);
 		m_Direction=destheight>sec->GetPlaneTexZ(sector_t::ceiling)? 1:-1;
 
 		// Do not interpolate instant movement ceilings.
diff --git a/src/p_3dfloors.cpp b/src/p_3dfloors.cpp
index cec3b1c50..a11705152 100644
--- a/src/p_3dfloors.cpp
+++ b/src/p_3dfloors.cpp
@@ -476,13 +476,13 @@ void P_Recalculate3DFloors(sector_t * sector)
 		while (oldlist.Size())
 		{
 			pick=oldlist[0];
-			fixed_t height=pick->top.plane->ZatPoint(CenterSpot(sector));
+			fixed_t height=pick->top.plane->ZatPoint(sector->centerspot);
 
 			// find highest starting ffloor - intersections are not supported!
 			pickindex=0;
 			for (j=1;j<oldlist.Size();j++)
 			{
-				fixed_t h2=oldlist[j]->top.plane->ZatPoint(CenterSpot(sector));
+				fixed_t h2=oldlist[j]->top.plane->ZatPoint(sector->centerspot);
 
 				if (h2>height)
 				{
@@ -493,7 +493,7 @@ void P_Recalculate3DFloors(sector_t * sector)
 			}
 
 			oldlist.Delete(pickindex);
-			fixed_t pick_bottom=pick->bottom.plane->ZatPoint(CenterSpot(sector));
+			fixed_t pick_bottom=pick->bottom.plane->ZatPoint(sector->centerspot);
 
 			if (pick->flags & FF_THISINSIDE)
 			{
@@ -607,7 +607,7 @@ void P_Recalculate3DFloors(sector_t * sector)
 			if ( !(rover->flags & FF_EXISTS) || rover->flags & FF_NOSHADE )
 				continue;
 				
-			fixed_t ff_top=rover->top.plane->ZatPoint(CenterSpot(sector));
+			fixed_t ff_top=rover->top.plane->ZatPoint(sector->centerspot);
 			if (ff_top < minheight) break;	// reached the floor
 			if (ff_top < maxheight)
 			{
@@ -622,7 +622,7 @@ void P_Recalculate3DFloors(sector_t * sector)
 			}
 			else
 			{
-				fixed_t ff_bottom=rover->bottom.plane->ZatPoint(CenterSpot(sector));
+				fixed_t ff_bottom=rover->bottom.plane->ZatPoint(sector->centerspot);
 				if (ff_bottom<maxheight)
 				{
 					// this segment begins over the ceiling and extends beyond it
@@ -648,7 +648,7 @@ void P_Recalculate3DFloors(sector_t * sector)
 
 			if (rover->flags&FF_DOUBLESHADOW)
 			{
-				fixed_t ff_bottom=rover->bottom.plane->ZatPoint(CenterSpot(sector));
+				fixed_t ff_bottom=rover->bottom.plane->ZatPoint(sector->centerspot);
 				if(ff_bottom < maxheight && ff_bottom>minheight)
 				{
 					newlight.caster = rover;
@@ -736,11 +736,11 @@ lightlist_t * P_GetPlaneLight(sector_t * sector, secplane_t * plane, bool unders
 	unsigned   i;
 	TArray<lightlist_t> &lightlist = sector->e->XFloor.lightlist;
 
-	fixed_t planeheight=plane->ZatPoint(CenterSpot(sector));
+	fixed_t planeheight=plane->ZatPoint(sector->centerspot);
 	if(underside) planeheight--;
 	
 	for(i = 1; i < lightlist.Size(); i++)
-		if (lightlist[i].plane.ZatPoint(CenterSpot(sector)) <= planeheight) 
+		if (lightlist[i].plane.ZatPoint(sector->centerspot) <= planeheight) 
 			return &lightlist[i - 1];
 		
 	return &lightlist[lightlist.Size() - 1];
@@ -1000,8 +1000,8 @@ CCMD (dump3df)
 
 		for (unsigned int i = 0; i < ffloors.Size(); i++)
 		{
-			fixed_t height=ffloors[i]->top.plane->ZatPoint(CenterSpot(sector));
-			fixed_t bheight=ffloors[i]->bottom.plane->ZatPoint(CenterSpot(sector));
+			fixed_t height=ffloors[i]->top.plane->ZatPoint(sector->centerspot);
+			fixed_t bheight=ffloors[i]->bottom.plane->ZatPoint(sector->centerspot);
 
 			IGNORE_FORMAT_PRE
 			Printf("FFloor %d @ top = %f (model = %d), bottom = %f (model = %d), flags = %B, alpha = %d %s %s\n", 
diff --git a/src/p_3dfloors.h b/src/p_3dfloors.h
index 51761d31b..fcfbb63d0 100644
--- a/src/p_3dfloors.h
+++ b/src/p_3dfloors.h
@@ -2,8 +2,6 @@
 #define __SECTORE_H
 
 
-#define CenterSpot(sec) (vertex_t*)&(sec)->soundorg[0]
-
 // 3D floor flags. Most are the same as in Legacy but I added some for EDGE's and Vavoom's features as well.
 typedef enum
 {
diff --git a/src/p_floor.cpp b/src/p_floor.cpp
index d91c05170..86a54dc0d 100644
--- a/src/p_floor.cpp
+++ b/src/p_floor.cpp
@@ -343,16 +343,16 @@ bool EV_DoFloor (DFloor::EFloor floortype, line_t *line, int tag,
 			floor->m_Speed = height;
 		case DFloor::floorLowerByValue:
 			floor->m_Direction = -1;
-			newheight = sec->floorplane.ZatPoint (sec->soundorg[0], sec->soundorg[1]) - height;
-			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->soundorg[0], sec->soundorg[1], newheight);
+			newheight = sec->CenterFloor() - height;
+			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->centerspot, newheight);
 			break;
 
 		case DFloor::floorRaiseInstant:
 			floor->m_Speed = height;
 		case DFloor::floorRaiseByValue:
 			floor->m_Direction = 1;
-			newheight = sec->floorplane.ZatPoint (sec->soundorg[0], sec->soundorg[1]) + height;
-			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->soundorg[0], sec->soundorg[1], newheight);
+			newheight = sec->CenterFloor() + height;
+			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->centerspot, newheight);
 			break;
 
 		case DFloor::floorMoveToValue:
@@ -412,8 +412,8 @@ bool EV_DoFloor (DFloor::EFloor floortype, line_t *line, int tag,
 
 		case DFloor::floorLowerByTexture:
 			floor->m_Direction = -1;
-			newheight = sec->floorplane.ZatPoint (sec->soundorg[0], sec->soundorg[1]) - sec->FindShortestTextureAround ();
-			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->soundorg[0], sec->soundorg[1], newheight);
+			newheight = sec->CenterFloor() - sec->FindShortestTextureAround ();
+			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->centerspot, newheight);
 			break;
 
 		case DFloor::floorLowerToCeiling:
@@ -429,14 +429,14 @@ bool EV_DoFloor (DFloor::EFloor floortype, line_t *line, int tag,
 			//		since the code is identical to what was here. (Oddly
 			//		enough, BOOM preserved the code here even though it
 			//		also had this function.)
-			newheight = sec->floorplane.ZatPoint (sec->soundorg[0], sec->soundorg[1]) + sec->FindShortestTextureAround ();
-			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->soundorg[0], sec->soundorg[1], newheight);
+			newheight = sec->CenterFloor() + sec->FindShortestTextureAround ();
+			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->centerspot, newheight);
 			break;
 
 		case DFloor::floorRaiseAndChange:
 			floor->m_Direction = 1;
-			newheight = sec->floorplane.ZatPoint (sec->soundorg[0], sec->soundorg[1]) + height;
-			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->soundorg[0], sec->soundorg[1], newheight);
+			newheight = sec->CenterFloor() + height;
+			floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->centerspot, newheight);
 			if (line != NULL)
 			{
 				FTextureID oldpic = sec->GetTexture(sector_t::floor);
@@ -619,8 +619,8 @@ bool EV_BuildStairs (int tag, DFloor::EStair type, line_t *line,
 		floor->m_Hexencrush = false;
 
 		floor->m_Speed = speed;
-		height = sec->floorplane.ZatPoint (sec->soundorg[0], sec->soundorg[1]) + stairstep;
-		floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->soundorg[0], sec->soundorg[1], height);
+		height = sec->CenterFloor() + stairstep;
+		floor->m_FloorDestDist = sec->floorplane.PointToDist (sec->centerspot, height);
 
 		texture = sec->GetTexture(sector_t::floor);
 		osecnum = secnum;				//jff 3/4/98 preserve loop index
@@ -1037,15 +1037,15 @@ bool EV_DoElevator (line_t *line, DElevator::EElevator elevtype,
 		// [RH] elevate up by a specific amount
 		case DElevator::elevateRaise:
 			elevator->m_Direction = 1;
-			elevator->m_FloorDestDist = sec->floorplane.PointToDist (sec->soundorg[0], sec->soundorg[1], floorheight + height);
-			elevator->m_CeilingDestDist = sec->ceilingplane.PointToDist (sec->soundorg[0], sec->soundorg[1], ceilingheight + height);
+			elevator->m_FloorDestDist = sec->floorplane.PointToDist (sec->centerspot, floorheight + height);
+			elevator->m_CeilingDestDist = sec->ceilingplane.PointToDist (sec->centerspot, ceilingheight + height);
 			break;
 
 		// [RH] elevate down by a specific amount
 		case DElevator::elevateLower:
 			elevator->m_Direction = -1;
-			elevator->m_FloorDestDist = sec->floorplane.PointToDist (sec->soundorg[0], sec->soundorg[1], floorheight - height);
-			elevator->m_CeilingDestDist = sec->ceilingplane.PointToDist (sec->soundorg[0], sec->soundorg[1], ceilingheight - height);
+			elevator->m_FloorDestDist = sec->floorplane.PointToDist (sec->centerspot, floorheight - height);
+			elevator->m_CeilingDestDist = sec->ceilingplane.PointToDist (sec->centerspot, ceilingheight - height);
 			break;
 		}
 	}
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index 1af76d6d9..8a65c31b4 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -3273,8 +3273,8 @@ FUNC(LS_GlassBreak)
 
 			x = ln->v1->x + ln->dx/2;
 			y = ln->v1->y + ln->dy/2;
-			x += (ln->frontsector->soundorg[0] - x) / 5;
-			y += (ln->frontsector->soundorg[1] - y) / 5;
+			x += (ln->frontsector->centerspot.x - x) / 5;
+			y += (ln->frontsector->centerspot.y - y) / 5;
 
 			for (int i = 0; i < 7; ++i)
 			{
diff --git a/src/p_pillar.cpp b/src/p_pillar.cpp
index b1cae3af9..8ac1759ed 100644
--- a/src/p_pillar.cpp
+++ b/src/p_pillar.cpp
@@ -144,15 +144,15 @@ DPillar::DPillar (sector_t *sector, EPillar type, fixed_t speed,
 		if (floordist == 0)
 		{
 			newheight = (sector->CenterFloor () + sector->CenterCeiling ()) / 2;
-			m_FloorTarget = sector->floorplane.PointToDist (sector->soundorg[0], sector->soundorg[1], newheight);
-			m_CeilingTarget = sector->ceilingplane.PointToDist (sector->soundorg[0], sector->soundorg[1], newheight);
+			m_FloorTarget = sector->floorplane.PointToDist (sector->centerspot, newheight);
+			m_CeilingTarget = sector->ceilingplane.PointToDist (sector->centerspot, newheight);
 			floordist = newheight - sector->CenterFloor ();
 		}
 		else
 		{
 			newheight = sector->CenterFloor () + floordist;
-			m_FloorTarget = sector->floorplane.PointToDist (sector->soundorg[0], sector->soundorg[1], newheight);
-			m_CeilingTarget = sector->ceilingplane.PointToDist (sector->soundorg[0], sector->soundorg[1], newheight);
+			m_FloorTarget = sector->floorplane.PointToDist (sector->centerspot, newheight);
+			m_CeilingTarget = sector->ceilingplane.PointToDist (sector->centerspot, newheight);
 		}
 		ceilingdist = sector->CenterCeiling () - newheight;
 	}
@@ -168,8 +168,8 @@ DPillar::DPillar (sector_t *sector, EPillar type, fixed_t speed,
 		}
 		else
 		{
-			newheight = sector->floorplane.ZatPoint (0, 0) - floordist;
-			m_FloorTarget = sector->floorplane.PointToDist (0, 0, newheight);
+			newheight = sector->CenterFloor() - floordist;
+			m_FloorTarget = sector->floorplane.PointToDist (sector->centerspot, newheight);
 		}
 		if (ceilingdist == 0)
 		{
@@ -179,8 +179,8 @@ DPillar::DPillar (sector_t *sector, EPillar type, fixed_t speed,
 		}
 		else
 		{
-			newheight = sector->ceilingplane.ZatPoint (0, 0) + ceilingdist;
-			m_CeilingTarget = sector->ceilingplane.PointToDist (0, 0, newheight);
+			newheight = sector->CenterCeiling() + ceilingdist;
+			m_CeilingTarget = sector->ceilingplane.PointToDist (sector->centerspot, newheight);
 		}
 	}
 
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index b1cb43c25..e5da17126 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -3221,9 +3221,9 @@ static void P_GroupLines (bool buildmap)
 			}
 		}
 
-		// set the soundorg to the middle of the bounding box
-		sector->soundorg[0] = bbox.Right()/2 + bbox.Left()/2;
-		sector->soundorg[1] = bbox.Top()/2 + bbox.Bottom()/2;
+		// set the center to the middle of the bounding box
+		sector->centerspot.x = bbox.Right()/2 + bbox.Left()/2;
+		sector->centerspot.y = bbox.Top()/2 + bbox.Bottom()/2;
 
 		// For triangular sectors the above does not calculate good points unless the longest of the triangle's lines is perfectly horizontal and vertical
 		if (sector->linecount == 3)
@@ -3245,8 +3245,8 @@ static void P_GroupLines (bool buildmap)
 					if (DMulScale32 (v->y - Triangle[0]->y, dx,
 									Triangle[0]->x - v->x, dy) != 0)
 					{
-						sector->soundorg[0] = Triangle[0]->x / 3 + Triangle[1]->x / 3 + v->x / 3;
-						sector->soundorg[1] = Triangle[0]->y / 3 + Triangle[1]->y / 3 + v->y / 3;
+						sector->centerspot.x = Triangle[0]->x / 3 + Triangle[1]->x / 3 + v->x / 3;
+						sector->centerspot.y = Triangle[0]->y / 3 + Triangle[1]->y / 3 + v->y / 3;
 						break;
 					}
 				}
diff --git a/src/r_bsp.cpp b/src/r_bsp.cpp
index a95bd97a0..51e89ac9e 100644
--- a/src/r_bsp.cpp
+++ b/src/r_bsp.cpp
@@ -1182,9 +1182,9 @@ void R_Subsector (subsector_t *sub)
 				fakeFloor->validcount = validcount;
 				R_3D_NewClip();
 			}
-			fakeHeight = fakeFloor->top.plane->ZatPoint(frontsector->soundorg[0], frontsector->soundorg[0]);
+			fakeHeight = fakeFloor->top.plane->ZatPoint(frontsector->centerspot);
 			if (fakeHeight < viewz &&
-				fakeHeight > frontsector->floorplane.ZatPoint(frontsector->soundorg[0], frontsector->soundorg[1]))
+				fakeHeight > frontsector->floorplane.ZatPoint(frontsector->centerspot))
 			{
 				fake3D = FAKE3D_FAKEFLOOR;
 				tempsec = *fakeFloor->model;
@@ -1244,9 +1244,9 @@ void R_Subsector (subsector_t *sub)
 				fakeFloor->validcount = validcount;
 				R_3D_NewClip();
 			}
-			fakeHeight = fakeFloor->bottom.plane->ZatPoint(frontsector->soundorg[0], frontsector->soundorg[1]);
+			fakeHeight = fakeFloor->bottom.plane->ZatPoint(frontsector->centerspot);
 			if (fakeHeight > viewz &&
-				fakeHeight < frontsector->ceilingplane.ZatPoint(frontsector->soundorg[0], frontsector->soundorg[1]))
+				fakeHeight < frontsector->ceilingplane.ZatPoint(frontsector->centerspot))
 			{
 				fake3D = FAKE3D_FAKECEILING;
 				tempsec = *fakeFloor->model;
diff --git a/src/r_defs.h b/src/r_defs.h
index ab55201f9..a25179fb1 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -340,6 +340,11 @@ struct secplane_t
 		return -TMulScale16 (a, x, y, b, z, c);
 	}
 
+	fixed_t PointToDist(fixedvec2 xy, fixed_t z) const
+	{
+		return -TMulScale16(a, xy.x, xy.y, b, z, c);
+	}
+
 	fixed_t PointToDist (const vertex_t *v, fixed_t z) const
 	{
 		return -TMulScale16 (a, v->x, b, v->y, z, c);
@@ -825,8 +830,8 @@ struct sector_t
 	}
 
 	// Member variables
-	fixed_t		CenterFloor () const { return floorplane.ZatPoint (soundorg[0], soundorg[1]); }
-	fixed_t		CenterCeiling () const { return ceilingplane.ZatPoint (soundorg[0], soundorg[1]); }
+	fixed_t		CenterFloor () const { return floorplane.ZatPoint (centerspot); }
+	fixed_t		CenterCeiling () const { return ceilingplane.ZatPoint (centerspot); }
 
 	// [RH] store floor and ceiling planes instead of heights
 	secplane_t	floorplane, ceilingplane;
@@ -844,7 +849,7 @@ struct sector_t
 	int			sky;
 	FNameNoInit	SeqName;		// Sound sequence name. Setting seqType non-negative will override this.
 
-	fixed_t		soundorg[2];	// origin for any sounds played by the sector
+	fixedvec2	centerspot;		// origin for any sounds played by the sector
 	int 		validcount;		// if == validcount, already checked
 	AActor* 	thinglist;		// list of mobjs in sector
 
diff --git a/src/s_sound.cpp b/src/s_sound.cpp
index e61a0f701..7db77375d 100644
--- a/src/s_sound.cpp
+++ b/src/s_sound.cpp
@@ -709,8 +709,8 @@ static void CalcPosVel(int type, const AActor *actor, const sector_t *sector,
 					}
 					else
 					{
-						x = sector->soundorg[0];
-						z = sector->soundorg[1];
+						x = sector->centerspot.x;
+						z = sector->centerspot.y;
 						chanflags |= CHAN_LISTENERZ;
 					}
 				}
@@ -776,8 +776,8 @@ static void CalcSectorSoundOrg(const sector_t *sec, int channum, fixed_t *x, fix
 	}
 	else
 	{
-		*x = sec->soundorg[0];
-		*y = sec->soundorg[1];
+		*x = sec->centerspot.x;
+		*y = sec->centerspot.y;
 	}
 
 	// Set sound vertical position based on channel.