diff --git a/source/core/gameinput.cpp b/source/core/gameinput.cpp
index 86f7f662eb7..4538ea9d941 100644
--- a/source/core/gameinput.cpp
+++ b/source/core/gameinput.cpp
@@ -350,7 +350,7 @@ FSerializer& Serialize(FSerializer& arc, const char* keyname, PlayerAngles& w, P
 			w.ZzOLDROTSCRNANG = w.ZzROTSCRNANG;
 			w.legacyDisabledYaw = w.legacyDisabledYaw;
 			w.resetAdjustmentYaw();
-			w.ZzOLDHORIZON = w.ZzHORIZON();
+			w.ZzOLDHORIZON() = w.ZzHORIZON();
 			w.ZzOHORIZOFF = w.ZzHORIZOFF;
 			w.legacyDisabledPitch = w.legacyDisabledPitch;
 			w.resetAdjustmentPitch();
diff --git a/source/core/gameinput.h b/source/core/gameinput.h
index d19935ed1e3..6776ec06ad5 100644
--- a/source/core/gameinput.h
+++ b/source/core/gameinput.h
@@ -14,6 +14,8 @@ struct PlayerAngles
 	// Temporary wrappers.
 	DAngle thisHoriz;
 	DAngle& ZzHORIZON() { return thisHoriz; }
+	DAngle prevHoriz;
+	DAngle& ZzOLDHORIZON() { return prevHoriz; }
 
 	friend FSerializer& Serialize(FSerializer& arc, const char* keyname, PlayerAngles& w, PlayerAngles* def);
 
@@ -51,7 +53,7 @@ struct PlayerAngles
 		else
 		{
 			ZzHORIZON() = value;
-			if (backup) ZzOLDHORIZON = ZzHORIZON();
+			if (backup) ZzOLDHORIZON() = ZzHORIZON();
 		}
 	}
 
@@ -103,7 +105,7 @@ struct PlayerAngles
 
 
 	// Legacy, to be removed.
-	DAngle ZzOLDHORIZON, ZzHORIZOFF, ZzOHORIZOFF;
+	DAngle ZzHORIZOFF, ZzOHORIZOFF;
 	void processLegacyHelperPitch(double const scaleAdjust)
 	{
 		if (targetedPitch())
@@ -127,15 +129,15 @@ struct PlayerAngles
 	}
 	void backupPitch()
 	{
-		ZzOLDHORIZON = ZzHORIZON();
+		ZzOLDHORIZON() = ZzHORIZON();
 		ZzOHORIZOFF = ZzHORIZOFF;
 	}
 	void restorePitch()
 	{
-		ZzHORIZON() = ZzOLDHORIZON;
+		ZzHORIZON() = ZzOLDHORIZON();
 		ZzHORIZOFF = ZzOHORIZOFF;
 	}
-	DAngle horizOLDSUM() { return ZzOLDHORIZON + ZzOHORIZOFF; }
+	DAngle horizOLDSUM() { return ZzOLDHORIZON() + ZzOHORIZOFF; }
 	DAngle horizSUM() { return ZzHORIZON() + ZzHORIZOFF; }
 	DAngle horizLERPSUM(double const interpfrac) { return interpolatedvalue(horizOLDSUM(), horizSUM(), interpfrac); }
 	void resetAdjustmentPitch() { legacyAdjustmentPitch = nullAngle; }
diff --git a/source/games/duke/src/gameexec.cpp b/source/games/duke/src/gameexec.cpp
index 65671b3052e..749a8ad6910 100644
--- a/source/games/duke/src/gameexec.cpp
+++ b/source/games/duke/src/gameexec.cpp
@@ -350,7 +350,7 @@ void DoPlayer(bool bSet, int lVar1, int lLabelID, int lVar2, DDukeActor* sActor,
 		break;
 
 	case PLAYER_OHORIZ:
-		if (!bSet) SetGameVarID(lVar2, int(ps[iPlayer].Angles.ZzOLDHORIZON.Tan() * -128.), sActor, sPlayer);
+		if (!bSet) SetGameVarID(lVar2, int(ps[iPlayer].Angles.ZzOLDHORIZON().Tan() * -128.), sActor, sPlayer);
 		break;
 
 	case PLAYER_HORIZOFF:
@@ -2247,7 +2247,7 @@ int ParseState::parse(void)
 
 			ps[g_p].last_extra = g_ac->spr.extra = gs.max_player_health;
 			ps[g_p].wantweaponfire = -1;
-			ps[g_p].Angles.ZzOLDHORIZON = ps[g_p].Angles.ZzHORIZON() = nullAngle;
+			ps[g_p].Angles.ZzOLDHORIZON() = ps[g_p].Angles.ZzHORIZON() = nullAngle;
 			ps[g_p].on_crane = nullptr;
 			ps[g_p].frag_ps = g_p;
 			ps[g_p].Angles.ZzOHORIZOFF = ps[g_p].Angles.ZzHORIZOFF = nullAngle;
diff --git a/source/games/duke/src/premap.cpp b/source/games/duke/src/premap.cpp
index 64b680b2d77..c9bfe56acef 100644
--- a/source/games/duke/src/premap.cpp
+++ b/source/games/duke/src/premap.cpp
@@ -125,7 +125,7 @@ void resetplayerstats(int snum)
 	p->footprintpal     = 0;
 	p->footprintshade   = 0;
 	p->jumping_toggle   = 0;
-	p->Angles.ZzOLDHORIZON = p->Angles.ZzHORIZON() = DAngle::fromDeg(-17.354);
+	p->Angles.ZzOLDHORIZON() = p->Angles.ZzHORIZON() = DAngle::fromDeg(-17.354);
 	p->Angles.ZzOHORIZOFF = p->Angles.ZzHORIZOFF = nullAngle;
 	p->bobcounter       = 0;
 	p->on_ground        = 0;
diff --git a/source/games/exhumed/src/player.cpp b/source/games/exhumed/src/player.cpp
index 76f212d5df3..26968530cec 100644
--- a/source/games/exhumed/src/player.cpp
+++ b/source/games/exhumed/src/player.cpp
@@ -411,7 +411,7 @@ void RestartPlayer(int nPlayer)
 
     plr->nThrust.Zero();
 
-	plr->nDestVertPan = plr->Angles.ZzOLDHORIZON = plr->Angles.ZzHORIZON() = nullAngle;
+	plr->nDestVertPan = plr->Angles.ZzOLDHORIZON() = plr->Angles.ZzHORIZON() = nullAngle;
 	plr->nBreathTimer = 90;
 
 	plr->nTauntTimer = RandomSize(3) + 3;
@@ -507,7 +507,7 @@ void StartDeathSeq(int nPlayer, int nVal)
 
     StopFiringWeapon(nPlayer);
 
-    PlayerList[nPlayer].Angles.ZzOLDHORIZON = PlayerList[nPlayer].Angles.ZzHORIZON() = nullAngle;
+    PlayerList[nPlayer].Angles.ZzOLDHORIZON() = PlayerList[nPlayer].Angles.ZzHORIZON() = nullAngle;
     pActor->oviewzoffset = pActor->viewzoffset = -55;
     PlayerList[nPlayer].nInvisible = 0;
     dVertPan[nPlayer] = 15;
diff --git a/source/games/sw/src/player.cpp b/source/games/sw/src/player.cpp
index e722871e34a..2ee78dc7634 100644
--- a/source/games/sw/src/player.cpp
+++ b/source/games/sw/src/player.cpp
@@ -7048,7 +7048,7 @@ void InitAllPlayers(void)
     for (pp = Player; pp < &Player[MAX_SW_PLAYERS]; pp++)
     {
         pp->Angles.ZzANGLE = pp->Angles.ZzOLDANGLE = pfirst->Angles.ZzANGLE;
-        pp->Angles.ZzHORIZON() = pp->Angles.ZzOLDHORIZON = pfirst->Angles.ZzHORIZON();
+        pp->Angles.ZzHORIZON() = pp->Angles.ZzOLDHORIZON() = pfirst->Angles.ZzHORIZON();
         pp->cursector = pfirst->cursector;
         // set like this so that player can trigger something on start of the level
         pp->lastcursector = pfirst->cursector+1;