Merge branch 'master' of https://github.com/rheit/zdoom

Conflicts:
	src/r_data/r_interpolate.cpp

src/actor.h

@@ -844,12 +844,6 @@ public:
 		return (flags & MF_COUNTKILL) && !(flags & MF_FRIENDLY);
 	}
 
-	bool intersects(AActor *other) const
-	{
-		fixed_t blockdist = radius + other->radius;
-		return ( abs(x - other->x) < blockdist && abs(y - other->y) < blockdist);
-	}
-
 	PalEntry GetBloodColor() const
 	{
 		return (PalEntry)GetClass()->Meta.GetMetaInt(AMETA_BloodColor);
@@ -884,103 +878,109 @@ public:
 		return bloodcls;
 	}
 
+	bool intersects(AActor *other) const
+	{
+		fixed_t blockdist = radius + other->radius;
+		return ( abs(X() - other->Y()) < blockdist && abs(Y() - other->Y()) < blockdist);
+	}
+
 	// 'absolute' is reserved for a linked portal implementation which needs
 	// to distinguish between portal-aware and portal-unaware distance calculation.
 	fixed_t AproxDistance(AActor *other, bool absolute = false)
 	{
-		return P_AproxDistance(x - other->x, y - other->y);
+		return P_AproxDistance(X() - other->X(), Y() - other->Y());
 	}
 
 	// same with 'ref' here.
 	fixed_t AproxDistance(fixed_t otherx, fixed_t othery, AActor *ref = NULL)
 	{
-		return P_AproxDistance(x - otherx, y - othery);
+		return P_AproxDistance(X() - otherx, Y() - othery);
 	}
 
 	fixed_t AproxDistance(AActor *other, fixed_t xadd, fixed_t yadd, bool absolute = false)
 	{
-		return P_AproxDistance(x - other->x + xadd, y - other->y + yadd);
+		return P_AproxDistance(X() - other->X() + xadd, Y() - other->Y() + yadd);
 	}
 
 	fixed_t AproxDistance3D(AActor *other, bool absolute = false)
 	{
-		return P_AproxDistance(AproxDistance(other), z - other->z);
+		return P_AproxDistance(AproxDistance(other), Z() - other->Z());
 	}
 
 	// more precise, but slower version, being used in a few places
 	fixed_t Distance2D(AActor *other, bool absolute = false)
 	{
-		return xs_RoundToInt(FVector2(x - other->x, y - other->y).Length());
+		return xs_RoundToInt(FVector2(X() - other->X(), Y() - other->Y()).Length());
 	}
 
 	// a full 3D version of the above
 	fixed_t Distance3D(AActor *other, bool absolute = false)
 	{
-		return xs_RoundToInt(FVector3(x - other->x, y - other->y, z - other->z).Length());
+		return xs_RoundToInt(FVector3(X() - other->X(), Y() - other->Y(), Z() - other->Z()).Length());
 	}
 
 	angle_t AngleTo(AActor *other, bool absolute = false) const
 	{
-		return R_PointToAngle2(x, y, other->x, other->y);
+		return R_PointToAngle2(X(), Y(), other->X(), other->Y());
 	}
 
 	angle_t AngleTo(AActor *other, fixed_t oxofs, fixed_t oyofs, bool absolute = false) const
 	{
-		return R_PointToAngle2(x, y, other->x + oxofs, other->y + oyofs);
+		return R_PointToAngle2(X(), Y(), other->X() + oxofs, other->Y() + oyofs);
 	}
 
 	fixed_t AngleTo(fixed_t otherx, fixed_t othery, AActor *ref = NULL)
 	{
-		return R_PointToAngle2(x, y, otherx, othery);
+		return R_PointToAngle2(X(), Y(), otherx, othery);
 	}
 
 	fixed_t AngleXYTo(fixed_t myx, fixed_t myy, AActor *other, bool absolute = false)
 	{
-		return R_PointToAngle2(myx, myy, other->x, other->y);
+		return R_PointToAngle2(myx, myy, other->X(), other->Y());
 	}
 
 	fixedvec2 Vec2To(AActor *other) const
 	{
-		fixedvec2 ret = { other->x - x, other->y - y };
+		fixedvec2 ret = { other->X() - X(), other->Y() - Y() };
 		return ret;
 	}
 
 	fixedvec3 Vec3To(AActor *other) const
 	{
-		fixedvec3 ret = { other->x - x, other->y - y, other->z - z };
+		fixedvec3 ret = { other->X() - X(), other->Y() - Y(), other->Z() - Z() };
 		return ret;
 	}
 
 	fixedvec2 Vec2Offset(fixed_t dx, fixed_t dy, bool absolute = false) const
 	{
-		fixedvec2 ret = { x + dx, y + dy };
+		fixedvec2 ret = { X() + dx, Y() + dy };
 		return ret;
 	}
 
 
 	fixedvec2 Vec2Angle(fixed_t length, angle_t angle, bool absolute = false) const
 	{
-		fixedvec2 ret = { x + FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]),
-						  y + FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]) };
+		fixedvec2 ret = { X() + FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]),
+						  Y() + FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]) };
 		return ret;
 	}
 
 	fixedvec3 Vec3Offset(fixed_t dx, fixed_t dy, fixed_t dz, bool absolute = false) const
 	{
-		fixedvec3 ret = { x + dx, y + dy, z + dz };
+		fixedvec3 ret = { X() + dx, Y() + dy, Z() + dz };
 		return ret;
 	}
 
 	fixedvec3 Vec3Angle(fixed_t length, angle_t angle, fixed_t dz, bool absolute = false) const
 	{
-		fixedvec3 ret = { x + FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]),
-						  y + FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]), z + dz };
+		fixedvec3 ret = { X() + FixedMul(length, finecosine[angle >> ANGLETOFINESHIFT]),
+						  Y() + FixedMul(length, finesine[angle >> ANGLETOFINESHIFT]), Z() + dz };
 		return ret;
 	}
 
 	void Move(fixed_t dx, fixed_t dy, fixed_t dz)
 	{
-		SetOrigin(x + dx, y + dy, z + dz, true);
+		SetOrigin(X() + dx, Y() + dy, Z() + dz, true);
 	}
 
 	void SetOrigin(const fixedvec3 & npos, bool moving)
@@ -1006,9 +1006,10 @@ public:
 	void CheckSectorTransition(sector_t *oldsec);
 
 // info for drawing
-// NOTE: The first member variable *must* be x.
-	fixed_t	 		x,y,z;
+// NOTE: The first member variable *must* be snext.
 	AActor			*snext, **sprev;	// links in sector (if needed)
+	fixedvec3		__pos;				// double underscores so that it won't get used by accident. Access to this should be exclusively through the designated access functions.
+
 	angle_t			angle;
 	WORD			sprite;				// used to find patch_t and flip value
 	BYTE			frame;				// sprite frame to draw
@@ -1237,21 +1238,57 @@ public:
 
 	fixed_t X() const
 	{
-		return x;
+		return __pos.x;
 	}
 	fixed_t Y() const
 	{
-		return y;
+		return __pos.y;
 	}
 	fixed_t Z() const
 	{
-		return z;
+		return __pos.z;
 	}
 	fixedvec3 Pos() const
 	{
 		fixedvec3 ret = { X(), Y(), Z() };
 		return ret;
 	}
+	fixedvec3 PosRelative(AActor *other) const
+	{
+		fixedvec3 ret = { X(), Y(), Z() };
+		return ret;
+	}
+	fixedvec3 PosRelative(sector_t *sec) const
+	{
+		fixedvec3 ret = { X(), Y(), Z() };
+		return ret;
+	}
+	fixedvec3 PosRelative(line_t *line) const
+	{
+		fixedvec3 ret = { X(), Y(), Z() };
+		return ret;
+	}
+	fixed_t SoundX() const
+	{
+		return X();
+	}
+	fixed_t SoundY() const
+	{
+		return Y();
+	}
+	fixed_t SoundZ() const
+	{
+		return Z();
+	}
+	fixedvec3 InterpolatedPosition(fixed_t ticFrac) const
+	{
+		fixedvec3 ret;
+
+		ret.x = PrevX + FixedMul (ticFrac, X() - PrevX);
+		ret.y = PrevY + FixedMul (ticFrac, Y() - PrevY);
+		ret.z = PrevZ + FixedMul (ticFrac, Z() - PrevZ);
+		return ret;
+	}
 	fixedvec3 PosPlusZ(fixed_t zadd) const
 	{
 		fixedvec3 ret = { X(), Y(), Z() + zadd };
@@ -1259,28 +1296,43 @@ public:
 	}
 	fixed_t Top() const
 	{
-		return z + height;
+		return Z() + height;
 	}
 	void SetZ(fixed_t newz, bool moving = true)
 	{
-		z = newz;
+		__pos.z = newz;
 	}
 	void AddZ(fixed_t newz, bool moving = true)
 	{
-		z += newz;
+		__pos.z += newz;
 	}
 
 	// These are not for general use as they do not link the actor into the world!
 	void SetXY(fixed_t xx, fixed_t yy)
 	{
-		x = xx;
-		y = yy;
+		__pos.x = xx;
+		__pos.y = yy;
 	}
 	void SetXYZ(fixed_t xx, fixed_t yy, fixed_t zz)
 	{
-		x = xx;
-		y = yy;
-		z = zz;
+		__pos.x = xx;
+		__pos.y = yy;
+		__pos.z = zz;
+	}
+	void SetXY(const fixedvec2 &npos)
+	{
+		__pos.x = npos.x;
+		__pos.y = npos.y;
+	}
+	void SetXYZ(const fixedvec3 &npos)
+	{
+		__pos.x = npos.x;
+		__pos.y = npos.y;
+		__pos.z = npos.z;
+	}
+	void SetMovement(fixed_t x, fixed_t y, fixed_t z)
+	{
+		// not yet implemented
 	}
 
 
@@ -1402,6 +1454,10 @@ inline fixedvec2 Vec2Angle(fixed_t length, angle_t angle)
 	return ret;
 }
 
+inline fixedvec3 PosRelative(const fixedvec3 &pos, line_t *line, sector_t *refsec = NULL)
+{
+	return pos;
+}
 
 void PrintMiscActorInfo(AActor * query);
 

src/dobject.h

@@ -203,6 +203,11 @@ private: \
 #define IMPLEMENT_ABSTRACT_CLASS(cls) \
 	_IMP_PCLASS(cls,NULL,NULL)
 
+#define IMPLEMENT_ABSTRACT_POINTY_CLASS(cls) \
+	_IMP_PCLASS(cls,cls::PointerOffsets,NULL) \
+	const size_t cls::PointerOffsets[] = {
+
+
 enum EObjectFlags
 {
 	// GC flags

src/dobjgc.cpp

@@ -335,6 +335,7 @@ static void MarkRoot()
 		SectorMarker->SecNum = 0;
 	}
 	Mark(SectorMarker);
+	Mark(interpolator.Head);
 	// Mark bot stuff.
 	Mark(bglobal.firstthing);
 	Mark(bglobal.body1);

src/g_game.cpp

@@ -1930,9 +1930,6 @@ void G_DoLoadGame ()
 	}
 
 	G_ReadSnapshots (png);
-	STAT_Read(png);
-	FRandom::StaticReadRNGState (png);
-	P_ReadACSDefereds (png);
 
 	// load a base level
 	savegamerestore = true;		// Use the player actors in the savegame
@@ -1942,6 +1939,9 @@ void G_DoLoadGame ()
 	delete[] map;
 	savegamerestore = false;
 
+	STAT_Read(png);
+	FRandom::StaticReadRNGState(png);
+	P_ReadACSDefereds(png);
 	P_ReadACSVars(png);
 
 	NextSkill = -1;

src/g_heretic/a_hereticweaps.cpp

@@ -1294,9 +1294,9 @@ DEFINE_ACTION_FUNCTION(AActor, A_FirePhoenixPL2)
 	}
 	angle = self->angle;
 
-	fixedvec3 pos = self->Vec3Offset(
-		(pr_fp2.Random2() << 9),
-		(pr_fp2.Random2() << 9),
+	fixed_t xo = (pr_fp2.Random2() << 9);
+	fixed_t yo = (pr_fp2.Random2() << 9);
+	fixedvec3 pos = self->Vec3Offset(xo, yo,
 		26*FRACUNIT + finetangent[FINEANGLES/4-(self->pitch>>ANGLETOFINESHIFT)] - self->floorclip);
 
 	slope = finetangent[FINEANGLES/4-(self->pitch>>ANGLETOFINESHIFT)] + (FRACUNIT/10);

src/g_heretic/a_knight.cpp

@@ -23,10 +23,9 @@ DEFINE_ACTION_FUNCTION(AActor, A_DripBlood)
 {
 	AActor *mo;
 
-	fixedvec3 pos = self->Vec3Offset(
-	 (pr_dripblood.Random2 () << 11),
-	 (pr_dripblood.Random2 () << 11), 0);
-	mo = Spawn ("Blood", pos, ALLOW_REPLACE);
+	fixed_t xo = (pr_dripblood.Random2() << 11);
+	fixed_t yo = (pr_dripblood.Random2() << 11);
+	mo = Spawn ("Blood", self->Vec3Offset(xo, yo, 0), ALLOW_REPLACE);
 	mo->velx = pr_dripblood.Random2 () << 10;
 	mo->vely = pr_dripblood.Random2 () << 10;
 	mo->gravity = FRACUNIT/8;

src/g_hexen/a_bishop.cpp

@@ -193,11 +193,10 @@ DEFINE_ACTION_FUNCTION(AActor, A_BishopPainBlur)
 		self->SetState (self->FindState ("Blur"));
 		return;
 	}
-	fixedvec3 pos = self->Vec3Offset(
-		(pr_pain.Random2()<<12),
-		(pr_pain.Random2()<<12),
-		(pr_pain.Random2()<<11));
-	mo = Spawn ("BishopPainBlur", pos, ALLOW_REPLACE);
+	fixed_t xo = (pr_pain.Random2() << 12);
+	fixed_t yo = (pr_pain.Random2() << 12);
+	fixed_t zo = (pr_pain.Random2() << 11);
+	mo = Spawn ("BishopPainBlur", self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 	if (mo)
 	{
 		mo->angle = self->angle;

src/g_hexen/a_dragon.cpp

@@ -252,12 +252,11 @@ DEFINE_ACTION_FUNCTION(AActor, A_DragonFX2)
 	delay = 16+(pr_dragonfx2()>>3);
 	for (i = 1+(pr_dragonfx2()&3); i; i--)
 	{
-		fixedvec3 pos = self->Vec3Offset(
-			((pr_dragonfx2()-128)<<14),
-			((pr_dragonfx2()-128)<<14),
-			((pr_dragonfx2()-128)<<12));
+		fixed_t xo = ((pr_dragonfx2() - 128) << 14);
+		fixed_t yo = ((pr_dragonfx2() - 128) << 14);
+		fixed_t zo = ((pr_dragonfx2() - 128) << 12);
 
-		mo = Spawn ("DragonExplosion", pos, ALLOW_REPLACE);
+		mo = Spawn ("DragonExplosion", self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 		if (mo)
 		{
 			mo->tics = delay+(pr_dragonfx2()&3)*i*2;

src/g_hexen/a_fighterquietus.cpp

@@ -112,11 +112,10 @@ DEFINE_ACTION_FUNCTION(AActor, A_FSwordFlames)
 
 	for (i = 1+(pr_fswordflame()&3); i; i--)
 	{
-		fixedvec3 pos = self->Vec3Offset(
-			((pr_fswordflame()-128)<<12),
-			((pr_fswordflame()-128)<<12),
-			((pr_fswordflame()-128)<<11));
-		Spawn ("FSwordFlame", pos, ALLOW_REPLACE);
+		fixed_t xo = ((pr_fswordflame() - 128) << 12);
+		fixed_t yo = ((pr_fswordflame() - 128) << 12);
+		fixed_t zo = ((pr_fswordflame() - 128) << 11);
+		Spawn ("FSwordFlame", self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 	}
 }
 

src/g_hexen/a_firedemon.cpp

@@ -54,11 +54,10 @@ void A_FiredSpawnRock (AActor *actor)
 			break;
 	}
 
-	fixedvec3 pos = actor->Vec3Offset(
-		((pr_firedemonrock() - 128) << 12),
-		((pr_firedemonrock() - 128) << 12),
-		( pr_firedemonrock() << 11));
-	mo = Spawn (rtype, pos, ALLOW_REPLACE);
+	fixed_t xo = ((pr_firedemonrock() - 128) << 12);
+	fixed_t yo = ((pr_firedemonrock() - 128) << 12);
+	fixed_t zo = (pr_firedemonrock() << 11);
+	mo = Spawn (rtype, actor->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 	if (mo)
 	{
 		mo->target = actor;

src/g_hexen/a_hexenspecialdecs.cpp

@@ -197,11 +197,12 @@ DEFINE_ACTION_FUNCTION(AActor, A_LeafSpawn)
 
 	for (i = (pr_leaf()&3)+1; i; i--)
 	{
+		fixed_t xo = (pr_leaf.Random2() << 14);
+		fixed_t yo = (pr_leaf.Random2() << 14);
+		fixed_t zo = (pr_leaf() << 14);
 		mo = Spawn (pr_leaf()&1 ? PClass::FindClass ("Leaf1") : PClass::FindClass ("Leaf2"),
-			self->Vec3Offset(
-			(pr_leaf.Random2()<<14),
-			(pr_leaf.Random2()<<14),
-			(pr_leaf()<<14)), ALLOW_REPLACE);
+			self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
+
 		if (mo)
 		{
 			P_ThrustMobj (mo, self->angle, (pr_leaf()<<9)+3*FRACUNIT);
@@ -278,10 +279,10 @@ DEFINE_ACTION_FUNCTION(AActor, A_SoAExplode)
 
 	for (i = 0; i < 10; i++)
 	{
-		mo = Spawn ("ZArmorChunk", self->Vec3Offset(
-			((pr_soaexplode()-128)<<12),
-			((pr_soaexplode()-128)<<12), 
-			(pr_soaexplode()*self->height/256)), ALLOW_REPLACE);
+		fixed_t xo = ((pr_soaexplode() - 128) << 12);
+		fixed_t yo = ((pr_soaexplode() - 128) << 12);
+		fixed_t zo = (pr_soaexplode()*self->height / 256);
+		mo = Spawn ("ZArmorChunk", self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 		if (mo)
 		{
 			mo->SetState (mo->SpawnState + i);

src/g_hexen/a_magelightning.cpp

@@ -227,12 +227,11 @@ DEFINE_ACTION_FUNCTION(AActor, A_LightningZap)
 	else
 	{
 		deltaZ = -10*FRACUNIT;
-	}
-	mo = Spawn(lightning,
-		self->Vec3Offset(
-			((pr_zap() - 128)*self->radius / 256),
-			((pr_zap() - 128)*self->radius / 256),
-			deltaZ), ALLOW_REPLACE);
+	}			
+	fixed_t xo = ((pr_zap() - 128)*self->radius / 256);
+	fixed_t yo = ((pr_zap() - 128)*self->radius / 256);
+
+	mo = Spawn(lightning, self->Vec3Offset(xo, yo, deltaZ), ALLOW_REPLACE);
 	if (mo)
 	{
 		mo->lastenemy = self;

src/g_hexen/a_wraith.cpp

@@ -147,12 +147,11 @@ DEFINE_ACTION_FUNCTION(AActor, A_WraithFX3)
 
 	while (numdropped-- > 0)
 	{
-		fixedvec3 pos = self->Vec3Offset(
-			(pr_wraithfx3()-128)<<11,
-			(pr_wraithfx3()-128)<<11,
-			(pr_wraithfx3()<<10));
+		fixed_t xo = (pr_wraithfx3() - 128) << 11;
+		fixed_t yo = (pr_wraithfx3() - 128) << 11;
+		fixed_t zo = pr_wraithfx3() << 10;
 
-		mo = Spawn ("WraithFX3", pos, ALLOW_REPLACE);
+		mo = Spawn ("WraithFX3", self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 		if (mo)
 		{
 			mo->floorz = self->floorz;
@@ -199,12 +198,11 @@ void A_WraithFX4 (AActor *self)
 
 	if (spawn4)
 	{
-		fixedvec3 pos = self->Vec3Offset(
-			(pr_wraithfx4()-128)<<12,
-			(pr_wraithfx4()-128)<<12,
-			(pr_wraithfx4()<<10));
+		fixed_t xo = (pr_wraithfx4() - 128) << 12;
+		fixed_t yo = (pr_wraithfx4() - 128) << 12;
+		fixed_t zo = (pr_wraithfx4() << 10);
 
-		mo = Spawn ("WraithFX4", pos, ALLOW_REPLACE);
+		mo = Spawn ("WraithFX4", self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 		if (mo)
 		{
 			mo->floorz = self->floorz;
@@ -214,12 +212,11 @@ void A_WraithFX4 (AActor *self)
 	}
 	if (spawn5)
 	{
-		fixedvec3 pos = self->Vec3Offset(
-			(pr_wraithfx4()-128)<<12,
-			(pr_wraithfx4()-128)<<12,
-			(pr_wraithfx4()<<10));
+		fixed_t xo = (pr_wraithfx4() - 128) << 11;
+		fixed_t yo = (pr_wraithfx4() - 128) << 11;
+		fixed_t zo = (pr_wraithfx4()<<10);
 
-		mo = Spawn ("WraithFX5", pos, ALLOW_REPLACE);
+		mo = Spawn ("WraithFX5", self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 		if (mo)
 		{
 			mo->floorz = self->floorz;

src/g_raven/a_minotaur.cpp

@@ -367,7 +367,6 @@ DEFINE_ACTION_FUNCTION(AActor, A_MinotaurAtk3)
 DEFINE_ACTION_FUNCTION(AActor, A_MntrFloorFire)
 {
 	AActor *mo;
-	fixed_t x, y;
 
 	self->SetZ(self->floorz);
 	fixedvec2 pos = self->Vec2Offset(

src/g_shared/a_action.cpp

@@ -262,14 +262,14 @@ DEFINE_ACTION_FUNCTION(AActor, A_FreezeDeathChunks)
 	i = (pr_freeze.Random2()) % (numChunks/4);
 	for (i = MAX (24, numChunks + i); i >= 0; i--)
 	{
-		mo = Spawn("IceChunk", 
-			self->x + (((pr_freeze()-128)*self->radius)>>7), 
-			self->y + (((pr_freeze()-128)*self->radius)>>7), 
-			self->z + (pr_freeze()*self->height/255), ALLOW_REPLACE);
+		fixed_t xo = (((pr_freeze() - 128)*self->radius) >> 7);
+		fixed_t yo = (((pr_freeze() - 128)*self->radius) >> 7);
+		fixed_t zo = (pr_freeze()*self->height / 255);
+		mo = Spawn("IceChunk", self->Vec3Offset(xo, yo, zo), ALLOW_REPLACE);
 		if (mo)
 		{
 				mo->SetState (mo->SpawnState + (pr_freeze()%3));
-			mo->velz = FixedDiv(mo->z - self->z, self->height)<<2;
+			mo->velz = FixedDiv(mo->Z() - self->Z(), self->height)<<2;
 			mo->velx = pr_freeze.Random2 () << (FRACBITS-7);
 			mo->vely = pr_freeze.Random2 () << (FRACBITS-7);
 			CALL_ACTION(A_IceSetTics, mo); // set a random tic wait
@@ -279,11 +279,10 @@ DEFINE_ACTION_FUNCTION(AActor, A_FreezeDeathChunks)
 	}
 	if (self->player)
 	{ // attach the player's view to a chunk of ice
-		AActor *head = Spawn("IceChunkHead", self->x, self->y, 
-													self->z + self->player->mo->ViewHeight, ALLOW_REPLACE);
+		AActor *head = Spawn("IceChunkHead", self->PosPlusZ(self->player->mo->ViewHeight), ALLOW_REPLACE);
 		if (head != NULL)
 		{
-			head->velz = FixedDiv(head->z - self->z, self->height)<<2;
+			head->velz = FixedDiv(head->Z() - self->Z(), self->height)<<2;
 			head->velx = pr_freeze.Random2 () << (FRACBITS-7);
 			head->vely = pr_freeze.Random2 () << (FRACBITS-7);
 			head->health = self->health;

src/g_shared/a_artifacts.cpp

@@ -965,7 +965,7 @@ void APowerFlight::InitEffect ()
 	Super::InitEffect();
 	Owner->flags2 |= MF2_FLY;
 	Owner->flags |= MF_NOGRAVITY;
-	if (Owner->z <= Owner->floorz)
+	if (Owner->Z() <= Owner->floorz)
 	{
 		Owner->velz = 4*FRACUNIT;	// thrust the player in the air a bit
 	}
@@ -1012,7 +1012,7 @@ void APowerFlight::EndEffect ()
 
 	if (!(Owner->flags7 & MF7_FLYCHEAT))
 	{
-		if (Owner->z != Owner->floorz)
+		if (Owner->Z() != Owner->floorz)
 		{
 			Owner->player->centering = true;
 		}
@@ -1250,7 +1250,7 @@ void APowerSpeed::DoEffect ()
 	if (P_AproxDistance (Owner->velx, Owner->vely) <= 12*FRACUNIT)
 		return;
 
-	AActor *speedMo = Spawn<APlayerSpeedTrail> (Owner->x, Owner->y, Owner->z, NO_REPLACE);
+	AActor *speedMo = Spawn<APlayerSpeedTrail> (Owner->Pos(), NO_REPLACE);
 	if (speedMo)
 	{
 		speedMo->angle = Owner->angle;

src/g_shared/a_bridge.cpp

@@ -100,19 +100,19 @@ DEFINE_ACTION_FUNCTION(AActor, A_BridgeOrbit)
 	// Set default values
 	// Every five tics, Hexen moved the ball 3/256th of a revolution.
 	int rotationspeed  = ANGLE_45/32*3/5;
-	int rotationradius = ORBIT_RADIUS;
+	int rotationradius = ORBIT_RADIUS * FRACUNIT;
 	// If the bridge is custom, set non-default values if any.
 
 	// Set angular speed; 1--128: counterclockwise rotation ~=1--180°; 129--255: clockwise rotation ~= 180--1°
 	if (self->target->args[3] > 128) rotationspeed = ANGLE_45/32 * (self->target->args[3]-256) / TICRATE;
 	else if (self->target->args[3] > 0) rotationspeed = ANGLE_45/32 * (self->target->args[3]) / TICRATE;
 	// Set rotation radius
-	if (self->target->args[4]) rotationradius = ((self->target->args[4] * self->target->radius) / (100 * FRACUNIT));
+	if (self->target->args[4]) rotationradius = ((self->target->args[4] * self->target->radius) / 100);
 
 	self->angle += rotationspeed;
-	self->x = self->target->x + rotationradius * finecosine[self->angle >> ANGLETOFINESHIFT];
-	self->y = self->target->y + rotationradius * finesine[self->angle >> ANGLETOFINESHIFT];
-	self->z = self->target->z;
+	self->SetOrigin(self->target->Vec3Angle(rotationradius, self->angle, 0), true);
+	self->floorz = self->target->floorz;
+	self->ceilingz = self->target->ceilingz;
 }
 
 
@@ -120,16 +120,12 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_BridgeInit)
 {
 	angle_t startangle;
 	AActor *ball;
-	fixed_t cx, cy, cz;
 
 	ACTION_PARAM_START(1);
 	ACTION_PARAM_CLASS(balltype, 0);
 
 	if (balltype == NULL) balltype = PClass::FindClass("BridgeBall");
 
-	cx = self->x;
-	cy = self->y;
-	cz = self->z;
 	startangle = pr_orbit() << 24;
 
 	// Spawn triad into world -- may be more than a triad now.
@@ -137,7 +133,7 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_BridgeInit)
 
 	for (int i = 0; i < ballcount; i++)
 	{
-		ball = Spawn(balltype, cx, cy, cz, ALLOW_REPLACE);
+		ball = Spawn(balltype, self->Pos(), ALLOW_REPLACE);
 		ball->angle = startangle + (ANGLE_45/32) * (256/ballcount) * i;
 		ball->target = self;
 		CALL_ACTION(A_BridgeOrbit, ball);

src/g_shared/a_camera.cpp

@@ -176,11 +176,10 @@ void AAimingCamera::Tick ()
 		}
 		if (MaxPitchChange)
 		{ // Aim camera's pitch; use floats for precision
-			float dx = FIXED2FLOAT(x - tracer->x);
-			float dy = FIXED2FLOAT(y - tracer->y);
-			float dz = FIXED2FLOAT(z - tracer->z - tracer->height/2);
-			float dist = (float)sqrt (dx*dx + dy*dy);
-			float ang = dist != 0.f ? (float)atan2 (dz, dist) : 0;
+			TVector2<double> vect = tracer->Vec2To(this);
+			double dz = FIXED2DBL(Z() - tracer->Z() - tracer->height/2);
+			double dist = vect.Length();
+			double ang = dist != 0.f ? atan2 (dz, dist) : 0;
 			int desiredpitch = (angle_t)(ang * 2147483648.f / PI);
 			if (abs (desiredpitch - pitch) < MaxPitchChange)
 			{

src/g_shared/a_debris.cpp

@@ -31,22 +31,18 @@ IMPLEMENT_CLASS(AGlassShard)
 
 void P_SpawnDirt (AActor *actor, fixed_t radius)
 {
-	fixed_t x,y,z;
 	const PClass *dtype = NULL;
 	AActor *mo;
-	angle_t angle;
 
-	angle = pr_dirt()<<5;		// <<24 >>19
-	x = actor->x + FixedMul(radius,finecosine[angle]);
-	y = actor->y + FixedMul(radius,finesine[angle]);
-	z = actor->z + (pr_dirt()<<9) + FRACUNIT;
+	fixed_t zo = (pr_dirt() << 9) + FRACUNIT;
+	fixedvec3 pos = actor->Vec3Angle(radius, pr_dirt() << 24, zo);
 
 	char fmt[8];
 	mysnprintf(fmt, countof(fmt), "Dirt%d", 1 + pr_dirt()%6);
 	dtype = PClass::FindClass(fmt);
 	if (dtype)
 	{
-		mo = Spawn (dtype, x, y, z, ALLOW_REPLACE);
+		mo = Spawn (dtype, pos, ALLOW_REPLACE);
 		if (mo)
 		{
 			mo->velz = pr_dirt()<<10;

src/g_shared/a_decals.cpp

@@ -91,7 +91,7 @@ DBaseDecal::DBaseDecal (int statnum, fixed_t z)
 
 DBaseDecal::DBaseDecal (const AActor *basis)
 : DThinker(STAT_DECAL),
-  WallNext(0), WallPrev(0), LeftDistance(0), Z(basis->z), ScaleX(basis->scaleX), ScaleY(basis->scaleY),
+  WallNext(0), WallPrev(0), LeftDistance(0), Z(basis->Z()), ScaleX(basis->scaleX), ScaleY(basis->scaleY),
   Alpha(basis->alpha), AlphaColor(basis->fillcolor), Translation(basis->Translation), PicNum(basis->picnum),
   RenderFlags(basis->renderflags), RenderStyle(basis->RenderStyle)
 {
@@ -817,22 +817,22 @@ void ADecal::BeginPlay ()
 	{
 		if (!tpl->PicNum.Exists())
 		{
-			Printf("Decal actor at (%d,%d) does not have a valid texture\n", x>>FRACBITS, y>>FRACBITS);
+			Printf("Decal actor at (%d,%d) does not have a valid texture\n", X()>>FRACBITS, Y()>>FRACBITS);
 		}
 		else
 		{
 			// Look for a wall within 64 units behind the actor. If none can be
 			// found, then no decal is created, and this actor is destroyed
 			// without effectively doing anything.
-			if (NULL == ShootDecal(tpl, this, Sector, x, y, z, angle + ANGLE_180, 64*FRACUNIT, true))
+			if (NULL == ShootDecal(tpl, this, Sector, X(), Y(), Z(), angle + ANGLE_180, 64*FRACUNIT, true))
 			{
-				DPrintf ("Could not find a wall to stick decal to at (%d,%d)\n", x>>FRACBITS, y>>FRACBITS);
+				DPrintf ("Could not find a wall to stick decal to at (%d,%d)\n", X()>>FRACBITS, Y()>>FRACBITS);
 			}
 		}
 	}
 	else
 	{
-		DPrintf ("Decal actor at (%d,%d) does not have a good template\n", x>>FRACBITS, y>>FRACBITS);
+		DPrintf ("Decal actor at (%d,%d) does not have a good template\n", X()>>FRACBITS, Y()>>FRACBITS);
 	}
 	// This actor doesn't need to stick around anymore.
 	Destroy();

src/g_shared/a_fastprojectile.cpp

@@ -25,10 +25,10 @@ void AFastProjectile::Tick ()
 	fixed_t zfrac;
 	int changexy;
 
-	PrevX = x;
-	PrevY = y;
-	PrevZ = z;
-	fixed_t oldz = z;
+	PrevX = X();
+	PrevY = Y();
+	PrevZ = Z();
+	fixed_t oldz = Z();
 	PrevAngle = angle;
 
 	if (!(flags5 & MF5_NOTIMEFREEZE))
@@ -57,7 +57,7 @@ void AFastProjectile::Tick ()
 	}
 
 	// Handle movement
-	if (velx || vely || (z != floorz) || velz)
+	if (velx || vely || (Z() != floorz) || velz)
 	{
 		xfrac = velx >> shift;
 		yfrac = vely >> shift;
@@ -73,14 +73,14 @@ void AFastProjectile::Tick ()
 					tm.LastRipped = NULL;	// [RH] Do rip damage each step, like Hexen
 				}
 				
-				if (!P_TryMove (this, x + xfrac,y + yfrac, true, NULL, tm))
+				if (!P_TryMove (this, X() + xfrac,Y() + yfrac, true, NULL, tm))
 				{ // Blocked move
 					if (!(flags3 & MF3_SKYEXPLODE))
 					{
 						if (tm.ceilingline &&
 							tm.ceilingline->backsector &&
 							tm.ceilingline->backsector->GetTexture(sector_t::ceiling) == skyflatnum &&
-							z >= tm.ceilingline->backsector->ceilingplane.ZatPoint (x, y))
+							Z() >= tm.ceilingline->backsector->ceilingplane.ZatPoint (this))
 						{
 							// Hack to prevent missiles exploding against the sky.
 							// Does not handle sky floors.
@@ -99,10 +99,10 @@ void AFastProjectile::Tick ()
 					return;
 				}
 			}
-			z += zfrac;
+			AddZ(zfrac);
 			UpdateWaterLevel (oldz);
-			oldz = z;
-			if (z <= floorz)
+			oldz = Z();
+			if (Z() <= floorz)
 			{ // Hit the floor
 
 				if (floorpic == skyflatnum && !(flags3 & MF3_SKYEXPLODE))
@@ -113,12 +113,12 @@ void AFastProjectile::Tick ()
 					return;
 				}
 
-				z = floorz;
+				SetZ(floorz);
 				P_HitFloor (this);
 				P_ExplodeMissile (this, NULL, NULL);
 				return;
 			}
-			if (z + height > ceilingz)
+			if (Top() > ceilingz)
 			{ // Hit the ceiling
 
 				if (ceilingpic == skyflatnum &&  !(flags3 & MF3_SKYEXPLODE))
@@ -127,7 +127,7 @@ void AFastProjectile::Tick ()
 					return;
 				}
 
-				z = ceilingz - height;
+				SetZ(ceilingz - height);
 				P_ExplodeMissile (this, NULL, NULL);
 				return;
 			}
@@ -160,7 +160,7 @@ void AFastProjectile::Effect()
 		FName name = (ENamedName) this->GetClass()->Meta.GetMetaInt (ACMETA_MissileName, NAME_None);
 		if (name != NAME_None)
 		{
-			fixed_t hitz = z-8*FRACUNIT;
+			fixed_t hitz = Z()-8*FRACUNIT;
 
 			if (hitz < floorz)
 			{
@@ -172,7 +172,7 @@ void AFastProjectile::Effect()
 			const PClass *trail = PClass::FindClass(name);
 			if (trail != NULL)
 			{
-				AActor *act = Spawn (trail, x, y, hitz, ALLOW_REPLACE);
+				AActor *act = Spawn (trail, X(), Y(), hitz, ALLOW_REPLACE);
 				if (act != NULL)
 				{
 					act->angle = this->angle;

src/g_shared/a_morph.cpp

@@ -77,7 +77,7 @@ bool P_MorphPlayer (player_t *activator, player_t *p, const PClass *spawntype, i
 		return false;
 	}
 
-	morphed = static_cast<APlayerPawn *>(Spawn (spawntype, actor->x, actor->y, actor->z, NO_REPLACE));
+	morphed = static_cast<APlayerPawn *>(Spawn (spawntype, actor->Pos(), NO_REPLACE));
 	EndAllPowerupEffects(actor->Inventory);
 	DObject::StaticPointerSubstitution (actor, morphed);
 	if ((actor->tid != 0) && (style & MORPH_NEWTIDBEHAVIOUR))
@@ -105,7 +105,7 @@ bool P_MorphPlayer (player_t *activator, player_t *p, const PClass *spawntype, i
 	morphed->flags  |= actor->flags & (MF_SHADOW|MF_NOGRAVITY);
 	morphed->flags2 |= actor->flags2 & MF2_FLY;
 	morphed->flags3 |= actor->flags3 & MF3_GHOST;
-	AActor *eflash = Spawn(((enter_flash) ? enter_flash : RUNTIME_CLASS(ATeleportFog)), actor->x, actor->y, actor->z + TELEFOGHEIGHT, ALLOW_REPLACE);
+	AActor *eflash = Spawn(((enter_flash) ? enter_flash : RUNTIME_CLASS(ATeleportFog)), actor->PosPlusZ(TELEFOGHEIGHT), ALLOW_REPLACE);
 	actor->player = NULL;
 	actor->flags &= ~(MF_SOLID|MF_SHOOTABLE);
 	actor->flags |= MF_UNMORPHED;
@@ -192,7 +192,7 @@ bool P_UndoPlayerMorph (player_t *activator, player_t *player, int unmorphflag,
 	}
 
 	mo = barrier_cast<APlayerPawn *>(pmo->tracer);
-	mo->SetOrigin (pmo->x, pmo->y, pmo->z);
+	mo->SetOrigin (pmo->Pos(), false);
 	mo->flags |= MF_SOLID;
 	pmo->flags &= ~MF_SOLID;
 	if (!force && !P_TestMobjLocation (mo))
@@ -310,7 +310,7 @@ bool P_UndoPlayerMorph (player_t *activator, player_t *player, int unmorphflag,
 	AActor *eflash = NULL;
 	if (exit_flash != NULL)
 	{
-		eflash = Spawn(exit_flash, pmo->x + 20*finecosine[angle], pmo->y + 20*finesine[angle], pmo->z + TELEFOGHEIGHT, ALLOW_REPLACE);
+		eflash = Spawn(exit_flash, pmo->Vec3Offset(20*finecosine[angle], 20*finesine[angle], TELEFOGHEIGHT), ALLOW_REPLACE);
 		if (eflash)	eflash->target = mo;
 	}
 	mo->SetupWeaponSlots();		// Use original class's weapon slots.
@@ -381,7 +381,7 @@ bool P_MorphMonster (AActor *actor, const PClass *spawntype, int duration, int s
 		return false;
 	}
 
-	morphed = static_cast<AMorphedMonster *>(Spawn (spawntype, actor->x, actor->y, actor->z, NO_REPLACE));
+	morphed = static_cast<AMorphedMonster *>(Spawn (spawntype, actor->Pos(), NO_REPLACE));
 	DObject::StaticPointerSubstitution (actor, morphed);
 	morphed->tid = actor->tid;
 	morphed->angle = actor->angle;
@@ -410,7 +410,7 @@ bool P_MorphMonster (AActor *actor, const PClass *spawntype, int duration, int s
 	actor->flags &= ~(MF_SOLID|MF_SHOOTABLE);
 	actor->flags |= MF_UNMORPHED;
 	actor->renderflags |= RF_INVISIBLE;
-	AActor *eflash = Spawn(((enter_flash) ? enter_flash : RUNTIME_CLASS(ATeleportFog)), actor->x, actor->y, actor->z + TELEFOGHEIGHT, ALLOW_REPLACE);
+	AActor *eflash = Spawn(((enter_flash) ? enter_flash : RUNTIME_CLASS(ATeleportFog)), actor->PosPlusZ(TELEFOGHEIGHT), ALLOW_REPLACE);
 	if (eflash)
 		eflash->target = morphed;
 	return true;
@@ -436,7 +436,7 @@ bool P_UndoMonsterMorph (AMorphedMonster *beast, bool force)
 		return false;
 	}
 	actor = beast->UnmorphedMe;
-	actor->SetOrigin (beast->x, beast->y, beast->z);
+	actor->SetOrigin (beast->Pos(), false);
 	actor->flags |= MF_SOLID;
 	beast->flags &= ~MF_SOLID;
 	ActorFlags6 beastflags6 = beast->flags6;
@@ -472,7 +472,7 @@ bool P_UndoMonsterMorph (AMorphedMonster *beast, bool force)
 	DObject::StaticPointerSubstitution (beast, actor);
 	const PClass *exit_flash = beast->MorphExitFlash;
 	beast->Destroy ();
-	AActor *eflash = Spawn(exit_flash, beast->x, beast->y, beast->z + TELEFOGHEIGHT, ALLOW_REPLACE);
+	AActor *eflash = Spawn(exit_flash, beast->PosPlusZ(TELEFOGHEIGHT), ALLOW_REPLACE);
 	if (eflash)
 		eflash->target = actor;
 	return true;

src/g_shared/a_movingcamera.cpp

@@ -282,7 +282,7 @@ void APathFollower::Activate (AActor *activator)
 		if (CurrNode != NULL)
 		{
 			NewNode ();
-			SetOrigin (CurrNode->x, CurrNode->y, CurrNode->z);
+			SetOrigin (CurrNode->Pos(), false);
 			Time = 0.f;
 			HoldTime = 0;
 			bJustStepped = true;
@@ -302,9 +302,7 @@ void APathFollower::Tick ()
 		if (CurrNode->args[2])
 		{
 			HoldTime = level.time + CurrNode->args[2] * TICRATE / 8;
-			x = CurrNode->x;
-			y = CurrNode->y;
-			z = CurrNode->z;
+			SetXYZ(CurrNode->X(), CurrNode->Y(), CurrNode->Z());
 		}
 	}
 
@@ -362,31 +360,33 @@ bool APathFollower::Interpolate ()
 
 	if ((args[2] & 8) && Time > 0.f)
 	{
-		dx = x;
-		dy = y;
-		dz = z;
+		dx = X();
+		dy = Y();
+		dz = Z();
 	}
 
 	if (CurrNode->Next==NULL) return false;
 
 	UnlinkFromWorld ();
+	fixed_t x, y, z;
 	if (args[2] & 1)
 	{	// linear
-		x = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->x), FIXED2FLOAT(CurrNode->Next->x)));
-		y = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->y), FIXED2FLOAT(CurrNode->Next->y)));
-		z = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->z), FIXED2FLOAT(CurrNode->Next->z)));
+		x = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->X()), FIXED2FLOAT(CurrNode->Next->X())));
+		y = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->Y()), FIXED2FLOAT(CurrNode->Next->Y())));
+		z = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->Z()), FIXED2FLOAT(CurrNode->Next->Z())));
 	}
 	else
 	{	// spline
 		if (CurrNode->Next->Next==NULL) return false;
 
-		x = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->x), FIXED2FLOAT(CurrNode->x),
-								FIXED2FLOAT(CurrNode->Next->x), FIXED2FLOAT(CurrNode->Next->Next->x)));
-		y = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->y), FIXED2FLOAT(CurrNode->y),
-								FIXED2FLOAT(CurrNode->Next->y), FIXED2FLOAT(CurrNode->Next->Next->y)));
-		z = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->z), FIXED2FLOAT(CurrNode->z),
-								FIXED2FLOAT(CurrNode->Next->z), FIXED2FLOAT(CurrNode->Next->Next->z)));
+		x = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->X()), FIXED2FLOAT(CurrNode->X()),
+								FIXED2FLOAT(CurrNode->Next->X()), FIXED2FLOAT(CurrNode->Next->Next->X())));
+		y = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->Y()), FIXED2FLOAT(CurrNode->Y()),
+								FIXED2FLOAT(CurrNode->Next->Y()), FIXED2FLOAT(CurrNode->Next->Next->Y())));
+		z = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->Z()), FIXED2FLOAT(CurrNode->Z()),
+								FIXED2FLOAT(CurrNode->Next->Z()), FIXED2FLOAT(CurrNode->Next->Next->Z())));
 	}
+	SetXYZ(x, y, z);
 	LinkToWorld ();
 
 	if (args[2] & 6)
@@ -395,9 +395,9 @@ bool APathFollower::Interpolate ()
 		{
 			if (args[2] & 1)
 			{ // linear
-				dx = CurrNode->Next->x - CurrNode->x;
-				dy = CurrNode->Next->y - CurrNode->y;
-				dz = CurrNode->Next->z - CurrNode->z;
+				dx = CurrNode->Next->X() - CurrNode->X();
+				dy = CurrNode->Next->Y() - CurrNode->Y();
+				dz = CurrNode->Next->Z() - CurrNode->Z();
 			}
 			else if (Time > 0.f)
 			{ // spline
@@ -422,6 +422,7 @@ bool APathFollower::Interpolate ()
 				x -= dx;
 				y -= dy;
 				z -= dz;
+				SetXYZ(x, y, z);
 			}
 			if (args[2] & 2)
 			{ // adjust yaw
@@ -548,11 +549,11 @@ bool AActorMover::Interpolate ()
 
 	if (Super::Interpolate ())
 	{
-		fixed_t savedz = tracer->z;
-		tracer->z = z;
-		if (!P_TryMove (tracer, x, y, true))
+		fixed_t savedz = tracer->Z();
+		tracer->SetZ(Z());
+		if (!P_TryMove (tracer, X(), Y(), true))
 		{
-			tracer->z = savedz;
+			tracer->SetZ(savedz);
 			return false;
 		}
 
@@ -589,9 +590,9 @@ void AActorMover::Activate (AActor *activator)
 	// Don't let the renderer interpolate between the actor's
 	// old position and its new position.
 	Interpolate ();
-	tracer->PrevX = tracer->x;
-	tracer->PrevY = tracer->y;
-	tracer->PrevZ = tracer->z;
+	tracer->PrevX = tracer->X();
+	tracer->PrevY = tracer->Y();
+	tracer->PrevZ = tracer->Z();
 	tracer->PrevAngle = tracer->angle;
 }
 
@@ -667,15 +668,15 @@ bool AMovingCamera::Interpolate ()
 
 	if (Super::Interpolate ())
 	{
-		angle = R_PointToAngle2 (x, y, tracer->x, tracer->y);
+		angle = AngleTo(tracer, true);
 
 		if (args[2] & 4)
 		{ // Also aim camera's pitch; use floats for precision
-			float dx = FIXED2FLOAT(x - tracer->x);
-			float dy = FIXED2FLOAT(y - tracer->y);
-			float dz = FIXED2FLOAT(z - tracer->z - tracer->height/2);
-			float dist = (float)sqrt (dx*dx + dy*dy);
-			float ang = dist != 0.f ? (float)atan2 (dz, dist) : 0;
+			double dx = FIXED2DBL(X() - tracer->X());
+			double dy = FIXED2DBL(Y() - tracer->Y());
+			double dz = FIXED2DBL(Z() - tracer->Z() - tracer->height/2);
+			double dist = sqrt (dx*dx + dy*dy);
+			double ang = dist != 0.f ? atan2 (dz, dist) : 0;
 			pitch = (angle_t)(ang * 2147483648.f / PI);
 		}
 

src/g_shared/a_pickups.cpp

@@ -331,7 +331,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_RestoreSpecialDoomThing)
 	{
 		self->SetState (self->SpawnState);
 		S_Sound (self, CHAN_VOICE, "misc/spawn", 1, ATTN_IDLE);
-		Spawn ("ItemFog", self->x, self->y, self->z, ALLOW_REPLACE);
+		Spawn ("ItemFog", self->Pos(), ALLOW_REPLACE);
 	}
 }
 
@@ -351,19 +351,18 @@ DEFINE_ACTION_FUNCTION(AActor, A_RestoreSpecialPosition)
 	_y = self->SpawnPoint[1];
 
 	self->UnlinkFromWorld();
-	self->x = _x;
-	self->y = _y;
+	self->SetXY(_x, _y);
 	self->LinkToWorld(true);
 	sec = self->Sector;
-	self->z =
 	self->dropoffz =
 	self->floorz = sec->floorplane.ZatPoint(_x, _y);
 	self->ceilingz = sec->ceilingplane.ZatPoint(_x, _y);
+	self->SetZ(self->floorz);
 	P_FindFloorCeiling(self, FFCF_ONLYSPAWNPOS);
 
 	if (self->flags & MF_SPAWNCEILING)
 	{
-		self->z = self->ceilingz - self->height - self->SpawnPoint[2];
+		self->SetZ(self->ceilingz - self->height - self->SpawnPoint[2]);
 	}
 	else if (self->flags2 & MF2_SPAWNFLOAT)
 	{
@@ -371,33 +370,33 @@ DEFINE_ACTION_FUNCTION(AActor, A_RestoreSpecialPosition)
 		if (space > 48*FRACUNIT)
 		{
 			space -= 40*FRACUNIT;
-			self->z = ((space * pr_restore())>>8) + self->floorz + 40*FRACUNIT;
+			self->SetZ(((space * pr_restore())>>8) + self->floorz + 40*FRACUNIT);
 		}
 		else
 		{
-			self->z = self->floorz;
+			self->SetZ(self->floorz);
 		}
 	}
 	else
 	{
-		self->z = self->SpawnPoint[2] + self->floorz;
+		self->SetZ(self->SpawnPoint[2] + self->floorz);
 	}
 	// Redo floor/ceiling check, in case of 3D floors
 	P_FindFloorCeiling(self, FFCF_SAMESECTOR | FFCF_ONLY3DFLOORS | FFCF_3DRESTRICT);
-	if (self->z < self->floorz)
+	if (self->Z() < self->floorz)
 	{ // Do not reappear under the floor, even if that's where we were for the
 	  // initial spawn.
-		self->z = self->floorz;
+		self->SetZ(self->floorz);
 	}
-	if ((self->flags & MF_SOLID) && (self->z + self->height > self->ceilingz))
+	if ((self->flags & MF_SOLID) && (self->Top() > self->ceilingz))
 	{ // Do the same for the ceiling.
-		self->z = self->ceilingz - self->height;
+		self->SetZ(self->ceilingz - self->height);
 	}
 	// Do not interpolate from the position the actor was at when it was
 	// picked up, in case that is different from where it is now.
-	self->PrevX = self->x;
-	self->PrevY = self->y;
-	self->PrevZ = self->z;
+	self->PrevX = self->X();
+	self->PrevY = self->Y();
+	self->PrevZ = self->Z();
 }
 
 int AInventory::StaticLastMessageTic;
@@ -728,8 +727,7 @@ AInventory *AInventory::CreateTossable ()
 		flags &= ~(MF_SPECIAL|MF_SOLID);
 		return this;
 	}
-	copy = static_cast<AInventory *>(Spawn (GetClass(), Owner->x,
-		Owner->y, Owner->z, NO_REPLACE));
+	copy = static_cast<AInventory *>(Spawn (GetClass(), Owner->Pos(), NO_REPLACE));
 	if (copy != NULL)
 	{
 		copy->MaxAmount = MaxAmount;
@@ -994,7 +992,7 @@ void AInventory::Touch (AActor *toucher)
 	// This is the only situation when a pickup flash should ever play.
 	if (PickupFlash != NULL && !ShouldStay())
 	{
-		Spawn(PickupFlash, x, y, z, ALLOW_REPLACE);
+		Spawn(PickupFlash, Pos(), ALLOW_REPLACE);
 	}
 
 	if (!(ItemFlags & IF_QUIET))
@@ -1290,8 +1288,8 @@ bool AInventory::DoRespawn ()
 		if (state != NULL) spot = state->GetRandomSpot(SpawnPointClass);
 		if (spot != NULL) 
 		{
-			SetOrigin (spot->x, spot->y, spot->z);
-			z = floorz;
+			SetOrigin (spot->Pos(), false);
+			SetZ(floorz);
 		}
 	}
 	return true;

src/g_shared/a_quake.cpp

@@ -131,7 +131,7 @@ void DEarthquake::Tick ()
 
 				dist = m_Spot->AproxDistance (victim, true);
 				// Check if in damage radius
-				if (dist < m_DamageRadius && victim->z <= victim->floorz)
+				if (dist < m_DamageRadius && victim->Z() <= victim->floorz)
 				{
 					if (pr_quake() < 50)
 					{

src/g_shared/a_randomspawner.cpp

@@ -91,7 +91,7 @@ class ARandomSpawner : public AActor
 			// So now we can spawn the dropped item.
 			if (di == NULL || bouncecount >= MAX_RANDOMSPAWNERS_RECURSION)	// Prevents infinite recursions
 			{
-				Spawn("Unknown", x, y, z, NO_REPLACE);		// Show that there's a problem.
+				Spawn("Unknown", Pos(), NO_REPLACE);		// Show that there's a problem.
 				Destroy();
 				return;
 			}
@@ -144,9 +144,9 @@ class ARandomSpawner : public AActor
 		if (this->flags & MF_MISSILE && target && target->target) // Attempting to spawn a missile.
 		{
 			if ((tracer == NULL) && (flags2 & MF2_SEEKERMISSILE)) tracer = target->target;
-			newmobj = P_SpawnMissileXYZ(x, y, z, target, target->target, cls, false);
+			newmobj = P_SpawnMissileXYZ(Pos(), target, target->target, cls, false);
 		}
-		else newmobj = Spawn(cls, x, y, z, NO_REPLACE);
+		else newmobj = Spawn(cls, Pos(), NO_REPLACE);
 		if (newmobj != NULL)
 		{
 			// copy everything relevant
@@ -179,7 +179,7 @@ class ARandomSpawner : public AActor
 			// Handle special altitude flags
 			if (newmobj->flags & MF_SPAWNCEILING)
 			{
-				newmobj->z = newmobj->ceilingz - newmobj->height - SpawnPoint[2];
+				newmobj->SetZ(newmobj->ceilingz - newmobj->height - SpawnPoint[2]);
 			}
 			else if (newmobj->flags2 & MF2_SPAWNFLOAT) 
 			{
@@ -187,9 +187,9 @@ class ARandomSpawner : public AActor
 				if (space > 48*FRACUNIT)
 				{
 					space -= 40*FRACUNIT;
-					newmobj->z = MulScale8 (space, pr_randomspawn()) + newmobj->floorz + 40*FRACUNIT;
+					newmobj->SetZ(MulScale8 (space, pr_randomspawn()) + newmobj->floorz + 40*FRACUNIT);
 				}
-				newmobj->z += SpawnPoint[2];
+				newmobj->AddZ(SpawnPoint[2]);
 			}
 			if (newmobj->flags & MF_MISSILE)
 				P_CheckMissileSpawn(newmobj, 0);

src/g_shared/a_spark.cpp

@@ -50,6 +50,6 @@ IMPLEMENT_CLASS (ASpark)
 void ASpark::Activate (AActor *activator)
 {
 	Super::Activate (activator);
-	P_DrawSplash (args[0] ? args[0] : 32, x, y, z, angle, 1);
+	P_DrawSplash (args[0] ? args[0] : 32, X(), Y(), Z(), angle, 1);
 	S_Sound (this, CHAN_AUTO, "world/spark", 1, ATTN_STATIC);
 }

src/g_shared/a_specialspot.cpp

@@ -423,12 +423,12 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SpawnSingleItem)
 		return;
 	}
 
-	AActor *spawned = Spawn(cls, self->x, self->y, self->z, ALLOW_REPLACE);
+	AActor *spawned = Spawn(cls, self->Pos(), ALLOW_REPLACE);
 
 	if (spawned)
 	{
-		spawned->SetOrigin (spot->x, spot->y, spot->z);
-		spawned->z = spawned->floorz;
+		spawned->SetOrigin (spot->Pos(), false);
+		spawned->SetZ(spawned->floorz);
 		// We want this to respawn.
 		if (!(self->flags & MF_DROPPED)) 
 		{

src/g_shared/shared_hud.cpp

@@ -826,9 +826,9 @@ static void DrawCoordinates(player_t * CPlayer)
 	
 	if (!map_point_coordinates || !automapactive) 
 	{
-		x=CPlayer->mo->x;
-		y=CPlayer->mo->y;                     
-		z=CPlayer->mo->z;
+		x=CPlayer->mo->X();
+		y=CPlayer->mo->Y();                     
+		z=CPlayer->mo->Z();
 	}
 	else 
 	{

src/g_shared/shared_sbar.cpp

@@ -1286,8 +1286,8 @@ void DBaseStatusBar::Draw (EHudState state)
 				y -= height * 2;
 		}
 
-		value = &CPlayer->mo->z;
-		for (i = 2, value = &CPlayer->mo->z; i >= 0; y -= height, --value, --i)
+		fixedvec3 pos = CPlayer->mo->Pos();
+		for (i = 2, value = &pos.z; i >= 0; y -= height, --value, --i)
 		{
 			mysnprintf (line, countof(line), "%c: %d", labels[i], *value >> FRACBITS);
 			screen->DrawText (SmallFont, CR_GREEN, xpos, y, line, 

src/g_strife/a_alienspectres.cpp

@@ -22,7 +22,7 @@ AActor *P_SpawnSubMissile (AActor *source, const PClass *type, AActor *target);
 
 DEFINE_ACTION_FUNCTION(AActor, A_SpectreChunkSmall)
 {
-	AActor *foo = Spawn("AlienChunkSmall", self->x, self->y, self->z + 10*FRACUNIT, ALLOW_REPLACE);
+	AActor *foo = Spawn("AlienChunkSmall", self->PosPlusZ(10*FRACUNIT), ALLOW_REPLACE);
 
 	if (foo != NULL)
 	{
@@ -40,7 +40,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_SpectreChunkSmall)
 
 DEFINE_ACTION_FUNCTION(AActor, A_SpectreChunkLarge)
 {
-	AActor *foo = Spawn("AlienChunkLarge", self->x, self->y, self->z + 10*FRACUNIT, ALLOW_REPLACE);
+	AActor *foo = Spawn("AlienChunkLarge", self->PosPlusZ(10*FRACUNIT), ALLOW_REPLACE);
 
 	if (foo != NULL)
 	{
@@ -62,7 +62,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_Spectre3Attack)
 	if (self->target == NULL)
 		return;
 
-	AActor *foo = Spawn("SpectralLightningV2", self->x, self->y, self->z + 32*FRACUNIT, ALLOW_REPLACE);
+	AActor *foo = Spawn("SpectralLightningV2", self->PosPlusZ(32*FRACUNIT), ALLOW_REPLACE);
 
 	foo->velz = -12*FRACUNIT;
 	foo->target = self;

src/g_strife/a_coin.cpp

@@ -80,22 +80,22 @@ AInventory *ACoin::CreateTossable ()
 	if (Amount >= 50)
 	{
 		Amount -= 50;
-		tossed = static_cast<ACoin*>(Spawn("Gold50", Owner->x, Owner->y, Owner->z, NO_REPLACE));
+		tossed = static_cast<ACoin*>(Spawn("Gold50", Owner->Pos(), NO_REPLACE));
 	}
 	else if (Amount >= 25)
 	{
 		Amount -= 25;
-		tossed = static_cast<ACoin*>(Spawn("Gold25", Owner->x, Owner->y, Owner->z, NO_REPLACE));
+		tossed = static_cast<ACoin*>(Spawn("Gold25", Owner->Pos(), NO_REPLACE));
 	}
 	else if (Amount >= 10)
 	{
 		Amount -= 10;
-		tossed = static_cast<ACoin*>(Spawn("Gold10", Owner->x, Owner->y, Owner->z, NO_REPLACE));
+		tossed = static_cast<ACoin*>(Spawn("Gold10", Owner->Pos(), NO_REPLACE));
 	}
 	else if (Amount > 1 || (ItemFlags & IF_KEEPDEPLETED))
 	{
 		Amount -= 1;
-		tossed = static_cast<ACoin*>(Spawn("Coin", Owner->x, Owner->y, Owner->z, NO_REPLACE));
+		tossed = static_cast<ACoin*>(Spawn("Coin", Owner->Pos(), NO_REPLACE));
 	}
 	else // Amount == 1 && !(ItemFlags & IF_KEEPDEPLETED)
 	{

src/g_strife/a_crusader.cpp

@@ -27,18 +27,18 @@ DEFINE_ACTION_FUNCTION(AActor, A_CrusaderChoose)
 	{
 		A_FaceTarget (self);
 		self->angle -= ANGLE_180/16;
-		P_SpawnMissileZAimed (self, self->z + 40*FRACUNIT, self->target, PClass::FindClass("FastFlameMissile"));
+		P_SpawnMissileZAimed (self, self->Z() + 40*FRACUNIT, self->target, PClass::FindClass("FastFlameMissile"));
 	}
 	else
 	{
 		if (P_CheckMissileRange (self))
 		{
 			A_FaceTarget (self);
-			P_SpawnMissileZAimed (self, self->z + 56*FRACUNIT, self->target, PClass::FindClass("CrusaderMissile"));
+			P_SpawnMissileZAimed (self, self->Z() + 56*FRACUNIT, self->target, PClass::FindClass("CrusaderMissile"));
 			self->angle -= ANGLE_45/32;
-			P_SpawnMissileZAimed (self, self->z + 40*FRACUNIT, self->target, PClass::FindClass("CrusaderMissile"));
+			P_SpawnMissileZAimed (self, self->Z() + 40*FRACUNIT, self->target, PClass::FindClass("CrusaderMissile"));
 			self->angle += ANGLE_45/16;
-			P_SpawnMissileZAimed (self, self->z + 40*FRACUNIT, self->target, PClass::FindClass("CrusaderMissile"));
+			P_SpawnMissileZAimed (self, self->Z() + 40*FRACUNIT, self->target, PClass::FindClass("CrusaderMissile"));
 			self->angle -= ANGLE_45/16;
 			self->reactiontime += 15;
 		}
@@ -49,7 +49,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_CrusaderChoose)
 DEFINE_ACTION_FUNCTION(AActor, A_CrusaderSweepLeft)
 {
 	self->angle += ANGLE_90/16;
-	AActor *misl = P_SpawnMissileZAimed (self, self->z + 48*FRACUNIT, self->target, PClass::FindClass("FastFlameMissile"));
+	AActor *misl = P_SpawnMissileZAimed (self, self->Z() + 48*FRACUNIT, self->target, PClass::FindClass("FastFlameMissile"));
 	if (misl != NULL)
 	{
 		misl->velz += FRACUNIT;
@@ -59,7 +59,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_CrusaderSweepLeft)
 DEFINE_ACTION_FUNCTION(AActor, A_CrusaderSweepRight)
 {
 	self->angle -= ANGLE_90/16;
-	AActor *misl = P_SpawnMissileZAimed (self, self->z + 48*FRACUNIT, self->target, PClass::FindClass("FastFlameMissile"));
+	AActor *misl = P_SpawnMissileZAimed (self, self->Z() + 48*FRACUNIT, self->target, PClass::FindClass("FastFlameMissile"));
 	if (misl != NULL)
 	{
 		misl->velz += FRACUNIT;

src/g_strife/a_entityboss.cpp

@@ -24,7 +24,7 @@ void A_SpectralMissile (AActor *self, const char *missilename)
 {
 	if (self->target != NULL)
 	{
-		AActor *missile = P_SpawnMissileXYZ (self->x, self->y, self->z + 32*FRACUNIT, 
+		AActor *missile = P_SpawnMissileXYZ (self->PosPlusZ(32*FRACUNIT), 
 			self, self->target, PClass::FindClass(missilename), false);
 		if (missile != NULL)
 		{
@@ -70,7 +70,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_EntityAttack)
 
 DEFINE_ACTION_FUNCTION(AActor, A_SpawnEntity)
 {
-	AActor *entity = Spawn("EntityBoss", self->x, self->y, self->z + 70*FRACUNIT, ALLOW_REPLACE);
+	AActor *entity = Spawn("EntityBoss", self->PosPlusZ(70*FRACUNIT), ALLOW_REPLACE);
 	if (entity != NULL)
 	{
 		entity->angle = self->angle;
@@ -89,13 +89,10 @@ DEFINE_ACTION_FUNCTION(AActor, A_EntityDeath)
 	AActor *spot = self->tracer;
 	if (spot == NULL) spot = self;
 
-	fixed_t SpawnX = spot->x;
-	fixed_t SpawnY = spot->y;
-	fixed_t SpawnZ = spot->z + (self->tracer? 70*FRACUNIT : 0);
+	fixedvec3 pos = spot->Vec3Angle(secondRadius, self->angle, self->tracer? 70*FRACUNIT : 0);
 	
 	an = self->angle >> ANGLETOFINESHIFT;
-	second = Spawn("EntitySecond", SpawnX + FixedMul (secondRadius, finecosine[an]),
-		SpawnY + FixedMul (secondRadius, finesine[an]), SpawnZ, ALLOW_REPLACE);
+	second = Spawn("EntitySecond", pos, ALLOW_REPLACE);
 	second->CopyFriendliness(self, true);
 	//second->target = self->target;
 	A_FaceTarget (second);
@@ -103,18 +100,18 @@ DEFINE_ACTION_FUNCTION(AActor, A_EntityDeath)
 	second->velx += FixedMul (finecosine[an], 320000);
 	second->vely += FixedMul (finesine[an], 320000);
 
+	pos = spot->Vec3Angle(secondRadius, self->angle + ANGLE_90, self->tracer? 70*FRACUNIT : 0);
 	an = (self->angle + ANGLE_90) >> ANGLETOFINESHIFT;
-	second = Spawn("EntitySecond", SpawnX + FixedMul (secondRadius, finecosine[an]),
-		SpawnY + FixedMul (secondRadius, finesine[an]), SpawnZ, ALLOW_REPLACE);
+	second = Spawn("EntitySecond", pos, ALLOW_REPLACE);
 	second->CopyFriendliness(self, true);
 	//second->target = self->target;
 	second->velx = FixedMul (secondRadius, finecosine[an]) << 2;
 	second->vely = FixedMul (secondRadius, finesine[an]) << 2;
 	A_FaceTarget (second);
 
+	pos = spot->Vec3Angle(secondRadius, self->angle - ANGLE_90, self->tracer? 70*FRACUNIT : 0);
 	an = (self->angle - ANGLE_90) >> ANGLETOFINESHIFT;
-	second = Spawn("EntitySecond", SpawnX + FixedMul (secondRadius, finecosine[an]),
-		SpawnY + FixedMul (secondRadius, finesine[an]), SpawnZ, ALLOW_REPLACE);
+	second = Spawn("EntitySecond", pos, ALLOW_REPLACE);
 	second->CopyFriendliness(self, true);
 	//second->target = self->target;
 	second->velx = FixedMul (secondRadius, finecosine[an]) << 2;

src/g_strife/a_inquisitor.cpp

@@ -35,9 +35,9 @@ DEFINE_ACTION_FUNCTION(AActor, A_InquisitorDecide)
 	{
 		self->SetState (self->FindState("Grenade"));
 	}
-	if (self->target->z != self->z)
+	if (self->target->Z() != self->Z())
 	{
-		if (self->z + self->height + 54*FRACUNIT < self->ceilingz)
+		if (self->Top() + 54*FRACUNIT < self->ceilingz)
 		{
 			self->SetState (self->FindState("Jump"));
 		}
@@ -53,20 +53,20 @@ DEFINE_ACTION_FUNCTION(AActor, A_InquisitorAttack)
 
 	A_FaceTarget (self);
 
-	self->z += 32*FRACUNIT;
+	self->AddZ(32*FRACUNIT);
 	self->angle -= ANGLE_45/32;
-	proj = P_SpawnMissileZAimed (self, self->z, self->target, PClass::FindClass("InquisitorShot"));
+	proj = P_SpawnMissileZAimed (self, self->Z(), self->target, PClass::FindClass("InquisitorShot"));
 	if (proj != NULL)
 	{
 		proj->velz += 9*FRACUNIT;
 	}
 	self->angle += ANGLE_45/16;
-	proj = P_SpawnMissileZAimed (self, self->z, self->target, PClass::FindClass("InquisitorShot"));
+	proj = P_SpawnMissileZAimed (self, self->Z(), self->target, PClass::FindClass("InquisitorShot"));
 	if (proj != NULL)
 	{
 		proj->velz += 16*FRACUNIT;
 	}
-	self->z -= 32*FRACUNIT;
+	self->AddZ(-32*FRACUNIT);
 }
 
 DEFINE_ACTION_FUNCTION(AActor, A_InquisitorJump)
@@ -79,7 +79,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_InquisitorJump)
 		return;
 
 	S_Sound (self, CHAN_ITEM|CHAN_LOOP, "inquisitor/jump", 1, ATTN_NORM);
-	self->z += 64*FRACUNIT;
+	self->AddZ(64*FRACUNIT);
 	A_FaceTarget (self);
 	an = self->angle >> ANGLETOFINESHIFT;
 	speed = self->Speed * 2/3;
@@ -91,7 +91,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_InquisitorJump)
 	{
 		dist = 1;
 	}
-	self->velz = (self->target->z - self->z) / dist;
+	self->velz = (self->target->Z() - self->Z()) / dist;
 	self->reactiontime = 60;
 	self->flags |= MF_NOGRAVITY;
 }
@@ -102,7 +102,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_InquisitorCheckLand)
 	if (self->reactiontime < 0 ||
 		self->velx == 0 ||
 		self->vely == 0 ||
-		self->z <= self->floorz)
+		self->Z() <= self->floorz)
 	{
 		self->SetState (self->SeeState);
 		self->reactiontime = 0;
@@ -119,7 +119,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_InquisitorCheckLand)
 
 DEFINE_ACTION_FUNCTION(AActor, A_TossArm)
 {
-	AActor *foo = Spawn("InquisitorArm", self->x, self->y, self->z + 24*FRACUNIT, ALLOW_REPLACE);
+	AActor *foo = Spawn("InquisitorArm", self->PosPlusZ(24*FRACUNIT), ALLOW_REPLACE);
 	foo->angle = self->angle - ANGLE_90 + (pr_inq.Random2() << 22);
 	foo->velx = FixedMul (foo->Speed, finecosine[foo->angle >> ANGLETOFINESHIFT]) >> 3;
 	foo->vely = FixedMul (foo->Speed, finesine[foo->angle >> ANGLETOFINESHIFT]) >> 3;

src/g_strife/a_loremaster.cpp

@@ -21,16 +21,14 @@ IMPLEMENT_CLASS (ALoreShot)
 
 int ALoreShot::DoSpecialDamage (AActor *victim, int damage, FName damagetype)
 {
-	FVector3 thrust;
 	
 	if (victim != NULL && target != NULL && !(victim->flags7 & MF7_DONTTHRUST))
 	{
-		thrust.X = float(target->x - victim->x);
-		thrust.Y = float(target->y - victim->y);
-		thrust.Z = float(target->z - victim->z);
-	
+		fixedvec3 fixthrust = victim->Vec3To(target);
+		TVector3<double> thrust(fixthrust.x, fixthrust.y, fixthrust.z);
+
 		thrust.MakeUnit();
-		thrust *= float((255*50*FRACUNIT) / (victim->Mass ? victim->Mass : 1));
+		thrust *= double((255*50*FRACUNIT) / (victim->Mass ? victim->Mass : 1));
 	
 		victim->velx += fixed_t(thrust.X);
 		victim->vely += fixed_t(thrust.Y);
@@ -42,7 +40,7 @@ int ALoreShot::DoSpecialDamage (AActor *victim, int damage, FName damagetype)
 DEFINE_ACTION_FUNCTION(AActor, A_LoremasterChain)
 {
 	S_Sound (self, CHAN_BODY, "loremaster/active", 1, ATTN_NORM);
-	Spawn("LoreShot2", self->x, self->y, self->z, ALLOW_REPLACE);
-	Spawn("LoreShot2", self->x - (self->velx >> 1), self->y - (self->vely >> 1), self->z - (self->velz >> 1), ALLOW_REPLACE);
-	Spawn("LoreShot2", self->x - self->velx, self->y - self->vely, self->z - self->velz, ALLOW_REPLACE);
+	Spawn("LoreShot2", self->Pos(), ALLOW_REPLACE);
+	Spawn("LoreShot2", self->Vec3Offset(-(self->velx >> 1), -(self->vely >> 1), -(self->velz >> 1)), ALLOW_REPLACE);
+	Spawn("LoreShot2", self->Vec3Offset(-self->velx, -self->vely, -self->velz), ALLOW_REPLACE);
 }

src/g_strife/a_programmer.cpp

@@ -104,7 +104,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_SpotLightning)
 	if (self->target == NULL)
 		return;
 
-	spot = Spawn("SpectralLightningSpot", self->target->x, self->target->y, self->target->floorz, ALLOW_REPLACE);
+	spot = Spawn("SpectralLightningSpot", self->target->X(), self->target->Y(), self->target->floorz, ALLOW_REPLACE);
 	if (spot != NULL)
 	{
 		spot->threshold = 25;
@@ -122,7 +122,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_SpotLightning)
 
 DEFINE_ACTION_FUNCTION(AActor, A_SpawnProgrammerBase)
 {
-	AActor *foo = Spawn("ProgrammerBase", self->x, self->y, self->z + 24*FRACUNIT, ALLOW_REPLACE);
+	AActor *foo = Spawn("ProgrammerBase", self->PosPlusZ(24*FRACUNIT), ALLOW_REPLACE);
 	if (foo != NULL)
 	{
 		foo->angle = self->angle + ANGLE_180 + (pr_prog.Random2() << 22);

src/g_strife/a_rebels.cpp

@@ -75,8 +75,8 @@ DEFINE_ACTION_FUNCTION(AActor, A_Beacon)
 	AActor *rebel;
 	angle_t an;
 
-	rebel = Spawn("Rebel1", self->x, self->y, self->floorz, ALLOW_REPLACE);
-	if (!P_TryMove (rebel, rebel->x, rebel->y, true))
+	rebel = Spawn("Rebel1", self->X(), self->Y(), self->floorz, ALLOW_REPLACE);
+	if (!P_TryMove (rebel, rebel->X(), rebel->Y(), true))
 	{
 		rebel->Destroy ();
 		return;
@@ -112,7 +112,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_Beacon)
 	rebel->SetState (rebel->SeeState);
 	rebel->angle = self->angle;
 	an = self->angle >> ANGLETOFINESHIFT;
-	Spawn<ATeleportFog> (rebel->x + 20*finecosine[an], rebel->y + 20*finesine[an], rebel->z + TELEFOGHEIGHT, ALLOW_REPLACE);
+	Spawn<ATeleportFog> (rebel->Vec3Offset(20*finecosine[an], 20*finesine[an], TELEFOGHEIGHT), ALLOW_REPLACE);
 	if (--self->health < 0)
 	{
 		self->SetState(self->FindState(NAME_Death));

src/g_strife/a_sentinel.cpp

@@ -27,7 +27,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_SentinelBob)
 	{
 		minz = maxz;
 	}
-	if (minz < self->z)
+	if (minz < self->Z())
 	{
 		self->velz -= FRACUNIT;
 	}
@@ -35,7 +35,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_SentinelBob)
 	{
 		self->velz += FRACUNIT;
 	}
-	self->reactiontime = (minz >= self->z) ? 4 : 0;
+	self->reactiontime = (minz >= self->Z()) ? 4 : 0;
 }
 
 DEFINE_ACTION_FUNCTION(AActor, A_SentinelAttack)
@@ -48,16 +48,14 @@ DEFINE_ACTION_FUNCTION(AActor, A_SentinelAttack)
 		return;
 	}
 
-	missile = P_SpawnMissileZAimed (self, self->z + 32*FRACUNIT, self->target, PClass::FindClass("SentinelFX2"));
+	missile = P_SpawnMissileZAimed (self, self->Z() + 32*FRACUNIT, self->target, PClass::FindClass("SentinelFX2"));
 
 	if (missile != NULL && (missile->velx | missile->vely) != 0)
 	{
 		for (int i = 8; i > 1; --i)
 		{
 			trail = Spawn("SentinelFX1",
-				self->x + FixedMul (missile->radius * i, finecosine[missile->angle >> ANGLETOFINESHIFT]),
-				self->y + FixedMul (missile->radius * i, finesine[missile->angle >> ANGLETOFINESHIFT]),
-				missile->z + (missile->velz / 4 * i), ALLOW_REPLACE);
+				self->Vec3Angle(missile->radius*i, missile->angle, (missile->velz / 4 * i)), ALLOW_REPLACE);
 			if (trail != NULL)
 			{
 				trail->target = self;
@@ -67,7 +65,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_SentinelAttack)
 				P_CheckMissileSpawn (trail, self->radius);
 			}
 		}
-		missile->z += missile->velz >> 2;
+		missile->AddZ(missile->velz >> 2);
 	}
 }
 

src/g_strife/a_spectral.cpp

@@ -28,7 +28,7 @@ void ASpectralMonster::Touch (AActor *toucher)
 
 DEFINE_ACTION_FUNCTION(AActor, A_SpectralLightningTail)
 {
-	AActor *foo = Spawn("SpectralLightningHTail", self->x - self->velx, self->y - self->vely, self->z, ALLOW_REPLACE);
+	AActor *foo = Spawn("SpectralLightningHTail", self->Vec3Offset(-self->velx, -self->vely, 0), ALLOW_REPLACE);
 
 	foo->angle = self->angle;
 	foo->FriendPlayer = self->FriendPlayer;
@@ -53,7 +53,6 @@ static FRandom pr_zap5 ("Zap5");
 DEFINE_ACTION_FUNCTION(AActor, A_SpectralLightning)
 {
 	AActor *flash;
-	fixed_t x, y;
 
 	if (self->threshold != 0)
 		--self->threshold;
@@ -61,17 +60,18 @@ DEFINE_ACTION_FUNCTION(AActor, A_SpectralLightning)
 	self->velx += pr_zap5.Random2(3) << FRACBITS;
 	self->vely += pr_zap5.Random2(3) << FRACBITS;
 
-	x = self->x + pr_zap5.Random2(3) * FRACUNIT * 50;
-	y = self->y + pr_zap5.Random2(3) * FRACUNIT * 50;
+	fixedvec2 pos = self->Vec2Offset(
+		pr_zap5.Random2(3) * FRACUNIT * 50,
+		pr_zap5.Random2(3) * FRACUNIT * 50);
 
 	flash = Spawn (self->threshold > 25 ? PClass::FindClass(NAME_SpectralLightningV2) :
-		PClass::FindClass(NAME_SpectralLightningV1), x, y, ONCEILINGZ, ALLOW_REPLACE);
+		PClass::FindClass(NAME_SpectralLightningV1), pos.x, pos.y, ONCEILINGZ, ALLOW_REPLACE);
 
 	flash->target = self->target;
 	flash->velz = -18*FRACUNIT;
 	flash->FriendPlayer = self->FriendPlayer;
 
-	flash = Spawn(NAME_SpectralLightningV2, self->x, self->y, ONCEILINGZ, ALLOW_REPLACE);
+	flash = Spawn(NAME_SpectralLightningV2, self->X(), self->Y(), ONCEILINGZ, ALLOW_REPLACE);
 
 	flash->target = self->target;
 	flash->velz = -18*FRACUNIT;
@@ -128,11 +128,11 @@ DEFINE_ACTION_FUNCTION(AActor, A_Tracer2)
 		}
 		if (dest->height >= 56*FRACUNIT)
 		{
-			slope = (dest->z+40*FRACUNIT - self->z) / dist;
+			slope = (dest->Z()+40*FRACUNIT - self->Z()) / dist;
 		}
 		else
 		{
-			slope = (dest->z + self->height*2/3 - self->z) / dist;
+			slope = (dest->Z() + self->height*2/3 - self->Z()) / dist;
 		}
 		if (slope < self->velz)
 		{

src/g_strife/a_stalker.cpp

@@ -17,7 +17,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_StalkerChaseDecide)
 	{
 		self->SetState (self->FindState("SeeFloor"));
 	}
-	else if (self->ceilingz - self->height > self->z)
+	else if (self->ceilingz > self->Top())
 	{
 		self->SetState (self->FindState("Drop"));
 	}

src/g_strife/a_strifestuff.cpp

@@ -580,7 +580,7 @@ IMPLEMENT_CLASS (AMeat)
 DEFINE_ACTION_FUNCTION(AActor, A_TossGib)
 {
 	const char *gibtype = (self->flags & MF_NOBLOOD) ? "Junk" : "Meat";
-	AActor *gib = Spawn (gibtype, self->x, self->y, self->z + 24*FRACUNIT, ALLOW_REPLACE);
+	AActor *gib = Spawn (gibtype, self->PosPlusZ(24*FRACUNIT), ALLOW_REPLACE);
 	angle_t an;
 	int speed;
 
@@ -628,7 +628,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_CheckTerrain)
 {
 	sector_t *sec = self->Sector;
 
-	if (self->z == sec->floorplane.ZatPoint(self))
+	if (self->Z() == sec->floorplane.ZatPoint(self))
 	{
 		if (sec->special == Damage_InstantDeath)
 		{
@@ -681,7 +681,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_ItBurnsItBurns)
 
 DEFINE_ACTION_FUNCTION(AActor, A_DropFire)
 {
-	AActor *drop = Spawn("FireDroplet", self->x, self->y, self->z + 24*FRACUNIT, ALLOW_REPLACE);
+	AActor *drop = Spawn("FireDroplet", self->PosPlusZ(24*FRACUNIT), ALLOW_REPLACE);
 	drop->velz = -FRACUNIT;
 	P_RadiusAttack (self, self, 64, 64, NAME_Fire, 0);
 }

src/g_strife/a_strifeweapons.cpp

@@ -360,8 +360,8 @@ DEFINE_ACTION_FUNCTION(AActor, A_RocketInFlight)
 	AActor *trail;
 
 	S_Sound (self, CHAN_VOICE, "misc/missileinflight", 1, ATTN_NORM);
-	P_SpawnPuff (self, PClass::FindClass("MiniMissilePuff"), self->x, self->y, self->z, self->angle - ANGLE_180, 2, PF_HITTHING);
-	trail = Spawn("RocketTrail", self->x - self->velx, self->y - self->vely, self->z, ALLOW_REPLACE);
+	P_SpawnPuff (self, PClass::FindClass("MiniMissilePuff"), self->Pos(), self->angle - ANGLE_180, 2, PF_HITTHING);
+	trail = Spawn("RocketTrail", self->Vec3Offset(-self->velx, -self->vely, 0), ALLOW_REPLACE);
 	if (trail != NULL)
 	{
 		trail->velz = FRACUNIT;
@@ -516,10 +516,10 @@ DEFINE_ACTION_FUNCTION(AActor, A_MaulerTorpedoWave)
 	self->angle += ANGLE_180;
 
 	// If the torpedo hit the ceiling, it should still spawn the wave
-	savedz = self->z;
-	if (wavedef && self->ceilingz - self->z < wavedef->height)
+	savedz = self->Z();
+	if (wavedef && self->ceilingz - self->Z() < wavedef->height)
 	{
-		self->z = self->ceilingz - wavedef->height;
+		self->SetZ(self->ceilingz - wavedef->height);
 	}
 
 	for (int i = 0; i < 80; ++i)
@@ -527,12 +527,12 @@ DEFINE_ACTION_FUNCTION(AActor, A_MaulerTorpedoWave)
 		self->angle += ANGLE_45/10;
 		P_SpawnSubMissile (self, PClass::FindClass("MaulerTorpedoWave"), self->target);
 	}
-	self->z = savedz;
+	self->SetZ(savedz);
 }
 
 AActor *P_SpawnSubMissile (AActor *source, const PClass *type, AActor *target)
 {
-	AActor *other = Spawn (type, source->x, source->y, source->z, ALLOW_REPLACE);
+	AActor *other = Spawn (type, source->Pos(), ALLOW_REPLACE);
 
 	if (other == NULL)
 	{
@@ -619,20 +619,19 @@ DEFINE_ACTION_FUNCTION(AActor, A_Burnination)
 			yofs = -yofs;
 		}
 
-		fixed_t x = self->x + (xofs << FRACBITS);
-		fixed_t y = self->y + (yofs << FRACBITS);
-		sector_t * sector = P_PointInSector(x, y);
+		fixedvec2 pos = self->Vec2Offset(xofs << FRACBITS, yofs << FRACBITS);
+		sector_t * sector = P_PointInSector(pos.x, pos.y);
 
 		// The sector's floor is too high so spawn the flame elsewhere.
-		if (sector->floorplane.ZatPoint(x, y) > self->z + self->MaxStepHeight)
+		if (sector->floorplane.ZatPoint(pos.x, pos.y) > self->Z() + self->MaxStepHeight)
 		{
-			x = self->x;
-			y = self->y;
+			pos.x = self->X();
+			pos.y = self->Y();
 		}
 
 		AActor *drop = Spawn<APhosphorousFire> (
-			x, y,
-			self->z + 4*FRACUNIT, ALLOW_REPLACE);
+			pos.x, pos.y,
+			self->Z() + 4*FRACUNIT, ALLOW_REPLACE);
 		if (drop != NULL)
 		{
 			drop->velx = self->velx + ((pr_phburn.Random2 (7)) << FRACBITS);
@@ -677,9 +676,9 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_FireGrenade)
 
 	if (grenadetype != NULL)
 	{
-		self->z += 32*FRACUNIT;
+		self->AddZ(32*FRACUNIT);
 		grenade = P_SpawnSubMissile (self, grenadetype, self);
-		self->z -= 32*FRACUNIT;
+		self->AddZ(-32*FRACUNIT);
 		if (grenade == NULL)
 			return;
 
@@ -690,15 +689,20 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_FireGrenade)
 
 		grenade->velz = FixedMul (finetangent[FINEANGLES/4-(self->pitch>>ANGLETOFINESHIFT)], grenade->Speed) + 8*FRACUNIT;
 
+		fixedvec2 offset;
+
 		an = self->angle >> ANGLETOFINESHIFT;
 		tworadii = self->radius + grenade->radius;
-		grenade->x += FixedMul (finecosine[an], tworadii);
-		grenade->y += FixedMul (finesine[an], tworadii);
+		offset.x = FixedMul (finecosine[an], tworadii);
+		offset.y = FixedMul (finesine[an], tworadii);
 
 		an = self->angle + Angle;
 		an >>= ANGLETOFINESHIFT;
-		grenade->x += FixedMul (finecosine[an], 15*FRACUNIT);
-		grenade->y += FixedMul (finesine[an], 15*FRACUNIT);
+		offset.x += FixedMul (finecosine[an], 15*FRACUNIT);
+		offset.y += FixedMul (finesine[an], 15*FRACUNIT);
+
+		fixedvec2 newpos = grenade->Vec2Offset(offset.x, offset.y);
+		grenade->SetOrigin(newpos.x, newpos.y, grenade->Z(), false);
 	}
 }
 
@@ -923,7 +927,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_FireSigil1)
 	P_BulletSlope (self, &linetarget);
 	if (linetarget != NULL)
 	{
-		spot = Spawn("SpectralLightningSpot", linetarget->x, linetarget->y, linetarget->floorz, ALLOW_REPLACE);
+		spot = Spawn("SpectralLightningSpot", linetarget->X(), linetarget->Y(), linetarget->floorz, ALLOW_REPLACE);
 		if (spot != NULL)
 		{
 			spot->tracer = linetarget;
@@ -931,7 +935,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_FireSigil1)
 	}
 	else
 	{
-		spot = Spawn("SpectralLightningSpot", self->x, self->y, self->z, ALLOW_REPLACE);
+		spot = Spawn("SpectralLightningSpot", self->Pos(), ALLOW_REPLACE);
 		if (spot != NULL)
 		{
 			spot->velx += 28 * finecosine[self->angle >> ANGLETOFINESHIFT];
@@ -989,7 +993,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_FireSigil3)
 		spot = P_SpawnSubMissile (self, PClass::FindClass("SpectralLightningBall1"), self);
 		if (spot != NULL)
 		{
-			spot->z = self->z + 32*FRACUNIT;
+			spot->SetZ(self->Z() + 32*FRACUNIT);
 		}
 	}
 	self->angle -= (ANGLE_180/20)*10;

src/g_strife/a_thingstoblowup.cpp

@@ -18,12 +18,10 @@ extern const PClass *QuestItemClasses[31];
 
 DEFINE_ACTION_FUNCTION(AActor, A_Bang4Cloud)
 {
-	fixed_t spawnx, spawny;
+	fixed_t xo = (pr_bang4cloud.Random2() & 3) * 10240;
+	fixed_t yo = (pr_bang4cloud.Random2() & 3) * 10240;
 
-	spawnx = self->x + (pr_bang4cloud.Random2() & 3) * 10240;
-	spawny = self->y + (pr_bang4cloud.Random2() & 3) * 10240;
-
-	Spawn("Bang4Cloud", spawnx, spawny, self->z, ALLOW_REPLACE);
+	Spawn("Bang4Cloud", self->Vec3Offset(xo, yo, 0), ALLOW_REPLACE);
 }
 
 // -------------------------------------------------------------------
@@ -97,7 +95,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_LightGoesOut)
 
 	for (int i = 0; i < 8; ++i)
 	{
-		foo = Spawn("Rubble1", self->x, self->y, self->z, ALLOW_REPLACE);
+		foo = Spawn("Rubble1", self->Pos(), ALLOW_REPLACE);
 		if (foo != NULL)
 		{
 			int t = pr_lightout() & 15;

src/p_effect.cpp

@@ -843,10 +843,11 @@ void P_DisconnectEffect (AActor *actor)
 		if (!p)
 			break;
 
-		fixedvec3 pos = actor->Vec3Offset(
-			((M_Random()-128)<<9) * (actor->radius>>FRACBITS),
-			((M_Random()-128)<<9) * (actor->radius>>FRACBITS),
-			(M_Random()<<8) * (actor->height>>FRACBITS));
+		
+		fixed_t xo = ((M_Random() - 128) << 9) * (actor->radius >> FRACBITS);
+		fixed_t yo = ((M_Random() - 128) << 9) * (actor->radius >> FRACBITS);
+		fixed_t zo = (M_Random() << 8) * (actor->height >> FRACBITS);
+		fixedvec3 pos = actor->Vec3Offset(xo, yo, zo);
 		p->x = pos.x;
 		p->y = pos.y;
 		p->z = pos.z;

src/p_local.h

@@ -139,6 +139,10 @@ inline AActor *P_SpawnPuff(AActor *source, const PClass *pufftype, const fixedve
 	return P_SpawnPuff(source, pufftype, pos.x, pos.y, pos.z, dir, updown, flags, vict);
 }
 void	P_SpawnBlood (fixed_t x, fixed_t y, fixed_t z, angle_t dir, int damage, AActor *originator);
+inline void	P_SpawnBlood(const fixedvec3 &pos, angle_t dir, int damage, AActor *originator)
+{
+	P_SpawnBlood(pos.x, pos.y, pos.z, dir, damage, originator);
+}
 void	P_BloodSplatter (fixed_t x, fixed_t y, fixed_t z, AActor *originator);
 void	P_BloodSplatter2 (fixed_t x, fixed_t y, fixed_t z, AActor *originator);
 void	P_RipperBlood (AActor *mo, AActor *bleeder);

src/p_maputl.cpp

@@ -326,7 +326,7 @@ void AActor::LinkToWorld (bool buggy)
 
 	if (!buggy || numgamenodes == 0)
 	{
-		sec = P_PointInSector (x, y);
+		sec = P_PointInSector (X(), Y());
 	}
 	else
 	{
@@ -344,7 +344,7 @@ void AActor::LinkToWorld (sector_t *sec)
 		return;
 	}
 	Sector = sec;
-	subsector = R_PointInSubsector(x, y);	// this is from the rendering nodes, not the gameplay nodes!
+	subsector = R_PointInSubsector(X(), Y());	// this is from the rendering nodes, not the gameplay nodes!
 
 	if ( !(flags & MF_NOSECTOR) )
 	{
@@ -371,7 +371,7 @@ void AActor::LinkToWorld (sector_t *sec)
 		// When a node is deleted, its sector links (the links starting
 		// at sector_t->touching_thinglist) are broken. When a node is
 		// added, new sector links are created.
-		P_CreateSecNodeList (this, x, y);
+		P_CreateSecNodeList (this, X(), Y());
 		touching_sectorlist = sector_list;	// Attach to thing
 		sector_list = NULL;		// clear for next time
     }
@@ -380,10 +380,10 @@ void AActor::LinkToWorld (sector_t *sec)
 	// link into blockmap (inert things don't need to be in the blockmap)
 	if ( !(flags & MF_NOBLOCKMAP) )
 	{
-		int x1 = GetSafeBlockX(x - radius - bmaporgx);
-		int x2 = GetSafeBlockX(x + radius - bmaporgx);
-		int y1 = GetSafeBlockY(y - radius - bmaporgy);
-		int y2 = GetSafeBlockY(y + radius - bmaporgy);
+		int x1 = GetSafeBlockX(X() - radius - bmaporgx);
+		int x2 = GetSafeBlockX(X() + radius - bmaporgx);
+		int y1 = GetSafeBlockY(Y() - radius - bmaporgy);
+		int y2 = GetSafeBlockY(Y() + radius - bmaporgy);
 
 		if (x1 >= bmapwidth || x2 < 0 || y1 >= bmapheight || y2 < 0)
 		{ // thing is off the map
@@ -496,7 +496,7 @@ sector_t *AActor::LinkToWorldForMapThing ()
 		// that lies directly on a line should always be
 		// considered as "in front" of the line. The orientation
 		// of the line should be irrelevant.
-		node = (node_t *)node->children[R_PointOnSideSlow (x, y, node)];
+		node = (node_t *)node->children[R_PointOnSideSlow (X(), Y(), node)];
 	}
 	while (!((size_t)node & 1));
 
@@ -510,8 +510,8 @@ sector_t *AActor::LinkToWorldForMapThing ()
 		// one-sided line might go into a subsector behind the line, so
 		// the line would not be included as one of its subsector's segs.
 
-		int blockx = GetSafeBlockX(x - bmaporgx);
-		int blocky = GetSafeBlockY(y - bmaporgy);
+		int blockx = GetSafeBlockX(X() - bmaporgx);
+		int blocky = GetSafeBlockY(Y() - bmaporgy);
 
 		if ((unsigned int)blockx < (unsigned int)bmapwidth &&
 			(unsigned int)blocky < (unsigned int)bmapheight)
@@ -536,10 +536,10 @@ sector_t *AActor::LinkToWorldForMapThing ()
 				}
 
 				// Not inside the line's bounding box
-				if (x + radius <= ldef->bbox[BOXLEFT]
-					|| x - radius >= ldef->bbox[BOXRIGHT]
-					|| y + radius <= ldef->bbox[BOXBOTTOM]
-					|| y - radius >= ldef->bbox[BOXTOP] )
+				if (X() + radius <= ldef->bbox[BOXLEFT]
+					|| X() - radius >= ldef->bbox[BOXRIGHT]
+					|| Y() + radius <= ldef->bbox[BOXBOTTOM]
+					|| Y() - radius >= ldef->bbox[BOXTOP] )
 					continue;
 
 				// Get the exact distance to the line
@@ -548,8 +548,8 @@ sector_t *AActor::LinkToWorldForMapThing ()
 
 				P_MakeDivline (ldef, &dll);
 
-				dlv.x = x;
-				dlv.y = y;
+				dlv.x = X();
+				dlv.y = Y();
 				dlv.dx = FixedDiv(dll.dy, linelen);
 				dlv.dy = -FixedDiv(dll.dx, linelen);
 
@@ -558,7 +558,7 @@ sector_t *AActor::LinkToWorldForMapThing ()
 				if (distance < radius)
 				{
 					DPrintf ("%s at (%d,%d) lies on %s line %td, distance = %f\n",
-						this->GetClass()->TypeName.GetChars(), x>>FRACBITS, y>>FRACBITS, 
+						this->GetClass()->TypeName.GetChars(), X()>>FRACBITS, Y()>>FRACBITS, 
 						ldef->dx == 0? "vertical" :	ldef->dy == 0? "horizontal" : "diagonal",
 						ldef-lines, FIXED2FLOAT(distance));
 					angle_t finean = R_PointToAngle2 (0, 0, ldef->dx, ldef->dy);
@@ -574,9 +574,8 @@ sector_t *AActor::LinkToWorldForMapThing ()
 
 					// Get the distance we have to move the object away from the wall
 					distance = radius - distance;
-					x += FixedMul(distance, finecosine[finean]);
-					y += FixedMul(distance, finesine[finean]);
-					return P_PointInSector (x, y);
+					SetXY(X() + FixedMul(distance, finecosine[finean]), Y() + FixedMul(distance, finesine[finean]));
+					return P_PointInSector (X(), Y());
 				}
 			}
 		}
@@ -588,9 +587,8 @@ sector_t *AActor::LinkToWorldForMapThing ()
 void AActor::SetOrigin (fixed_t ix, fixed_t iy, fixed_t iz, bool moving)
 {
 	UnlinkFromWorld ();
-	x = ix;
-	y = iy;
-	z = iz;
+	SetXYZ(ix, iy, iz);
+	if (moving) SetMovement(ix - X(), iy - Y(), iz - Z());
 	LinkToWorld ();
 	floorz = Sector->floorplane.ZatPoint (ix, iy);
 	ceilingz = Sector->ceilingplane.ZatPoint (ix, iy);
@@ -878,8 +876,8 @@ AActor *FBlockThingsIterator::Next(bool centeronly)
 				fixed_t blocktop = blockbottom + MAPBLOCKSIZE;
 
 				// only return actors with the center in this block
-				if (me->x >= blockleft && me->x < blockright &&
-					me->y >= blockbottom && me->y < blocktop)
+				if (me->X() >= blockleft && me->X() < blockright &&
+					me->Y() >= blockbottom && me->Y() < blocktop)
 				{
 					return me;
 				}
@@ -1028,29 +1026,29 @@ void FPathTraverse::AddThingIntercepts (int bx, int by, FBlockThingsIterator &it
 				switch (i)
 				{
 				case 0:		// Top edge
-					line.x = thing->x + thing->radius;
-					line.y = thing->y + thing->radius;
+					line.x = thing->X() + thing->radius;
+					line.y = thing->Y() + thing->radius;
 					line.dx = -thing->radius * 2;
 					line.dy = 0;
 					break;
 
 				case 1:		// Right edge
-					line.x = thing->x + thing->radius;
-					line.y = thing->y - thing->radius;
+					line.x = thing->X() + thing->radius;
+					line.y = thing->Y() - thing->radius;
 					line.dx = 0;
 					line.dy = thing->radius * 2;
 					break;
 
 				case 2:		// Bottom edge
-					line.x = thing->x - thing->radius;
-					line.y = thing->y - thing->radius;
+					line.x = thing->X() - thing->radius;
+					line.y = thing->Y() - thing->radius;
 					line.dx = thing->radius * 2;
 					line.dy = 0;
 					break;
 
 				case 3:		// Left edge
-					line.x = thing->x - thing->radius;
-					line.y = thing->y + thing->radius;
+					line.x = thing->X() - thing->radius;
+					line.y = thing->Y() + thing->radius;
 					line.dx = 0;
 					line.dy = thing->radius * -2;
 					break;
@@ -1107,19 +1105,19 @@ void FPathTraverse::AddThingIntercepts (int bx, int by, FBlockThingsIterator &it
 			// check a corner to corner crossection for hit
 			if (tracepositive)
 			{
-				x1 = thing->x - thing->radius;
-				y1 = thing->y + thing->radius;
+				x1 = thing->X() - thing->radius;
+				y1 = thing->Y() + thing->radius;
 						
-				x2 = thing->x + thing->radius;
-				y2 = thing->y - thing->radius;					
+				x2 = thing->X() + thing->radius;
+				y2 = thing->Y() - thing->radius;					
 			}
 			else
 			{
-				x1 = thing->x - thing->radius;
-				y1 = thing->y - thing->radius;
+				x1 = thing->X() - thing->radius;
+				y1 = thing->Y() - thing->radius;
 						
-				x2 = thing->x + thing->radius;
-				y2 = thing->y + thing->radius;					
+				x2 = thing->X() + thing->radius;
+				y2 = thing->Y() + thing->radius;					
 			}
 			
 			s1 = P_PointOnDivlineSide (x1, y1, &trace);
@@ -1422,8 +1420,8 @@ AActor *P_BlockmapSearch (AActor *mo, int distance, AActor *(*check)(AActor*, in
 	int count;
 	AActor *target;
 
-	startX = GetSafeBlockX(mo->x-bmaporgx);
-	startY = GetSafeBlockY(mo->y-bmaporgy);
+	startX = GetSafeBlockX(mo->X()-bmaporgx);
+	startY = GetSafeBlockY(mo->Y()-bmaporgy);
 	validcount++;
 	
 	if (startX >= 0 && startX < bmapwidth && startY >= 0 && startY < bmapheight)

src/p_setup.cpp

@@ -3379,6 +3379,7 @@ extern polyblock_t **PolyBlockMap;
 
 void P_FreeLevelData ()
 {
+	interpolator.ClearInterpolations();	// [RH] Nothing to interpolate on a fresh level.
 	Renderer->CleanLevelData();
 	FPolyObj::ClearAllSubsectorLinks(); // can't be done as part of the polyobj deletion process.
 	SN_StopAllSequences ();
@@ -3610,7 +3611,6 @@ void P_SetupLevel (const char *lumpname, int position)
 
 	// Free all level data from the previous map
 	P_FreeLevelData ();
-	interpolator.ClearInterpolations();	// [RH] Nothing to interpolate on a fresh level.
 
 	MapData *map = P_OpenMapData(lumpname, true);
 	if (map == NULL)

src/p_sight.cpp

@@ -68,11 +68,11 @@ public:
 
 	SightCheck(const AActor * t1, const AActor * t2, int flags)
 	{
-		lastztop = lastzbottom = sightzstart = t1->z + t1->height - (t1->height>>2);
+		lastztop = lastzbottom = sightzstart = t1->Z() + t1->height - (t1->height>>2);
 		lastsector = t1->Sector;
 		sightthing=t1;
 		seeingthing=t2;
-		bottomslope = t2->z - sightzstart;
+		bottomslope = t2->Z() - sightzstart;
 		topslope = bottomslope + t2->height;
 		Flags = flags;
 
@@ -132,7 +132,7 @@ bool SightCheck::PTR_SightTraverse (intercept_t *in)
 	{
 		int  frontflag;
 		
-		frontflag = P_PointOnLineSidePrecise(sightthing->x, sightthing->y, li);
+		frontflag = P_PointOnLineSidePrecise(sightthing->X(), sightthing->Y(), li);
 		
 		//Check 3D FLOORS!
 		for(int i=1;i<=2;i++)
@@ -413,8 +413,8 @@ bool SightCheck::P_SightTraverseIntercepts ()
 			if((rover->flags & FF_SOLID) == myseethrough || !(rover->flags & FF_EXISTS)) continue;
 			if ((Flags & SF_IGNOREWATERBOUNDARY) && (rover->flags & FF_SOLID) == 0) continue;
 			
-			fixed_t ff_bottom=rover->bottom.plane->ZatPoint(seeingthing->x, seeingthing->y);
-			fixed_t ff_top=rover->top.plane->ZatPoint(seeingthing->x, seeingthing->y);
+			fixed_t ff_bottom=rover->bottom.plane->ZatPoint(seeingthing);
+			fixed_t ff_top=rover->top.plane->ZatPoint(seeingthing);
 
 			if (lastztop<=ff_bottom && topz>ff_bottom && lastzbottom<=ff_bottom && bottomz>ff_bottom) return false;
 			if (lastzbottom>=ff_top && bottomz<ff_top && lastztop>=ff_top && topz<ff_top) return false;
@@ -458,8 +458,8 @@ bool SightCheck::P_SightPathTraverse (fixed_t x1, fixed_t y1, fixed_t x2, fixed_
 
 		if(!(rover->flags & FF_EXISTS)) continue;
 		
-		fixed_t ff_bottom=rover->bottom.plane->ZatPoint(sightthing->x, sightthing->y);
-		fixed_t ff_top=rover->top.plane->ZatPoint(sightthing->x, sightthing->y);
+		fixed_t ff_bottom=rover->bottom.plane->ZatPoint(sightthing);
+		fixed_t ff_top=rover->top.plane->ZatPoint(sightthing);
 
 		if (sightzstart < ff_top && sightzstart >= ff_bottom) 
 		{
@@ -691,16 +691,16 @@ sightcounts[0]++;
 	if (!(flags & SF_IGNOREWATERBOUNDARY))
 	{
 		if ((s1->GetHeightSec() &&
-			((t1->z + t1->height <= s1->heightsec->floorplane.ZatPoint (t1->x, t1->y) &&
-			  t2->z >= s1->heightsec->floorplane.ZatPoint (t2->x, t2->y)) ||
-			 (t1->z >= s1->heightsec->ceilingplane.ZatPoint (t1->x, t1->y) &&
-			  t2->z + t1->height <= s1->heightsec->ceilingplane.ZatPoint (t2->x, t2->y))))
+			((t1->Z() + t1->height <= s1->heightsec->floorplane.ZatPoint(t1) &&
+			  t2->Z() >= s1->heightsec->floorplane.ZatPoint(t2)) ||
+			 (t1->Z() >= s1->heightsec->ceilingplane.ZatPoint(t1) &&
+			  t2->Z() + t1->height <= s1->heightsec->ceilingplane.ZatPoint(t2))))
 			||
 			(s2->GetHeightSec() &&
-			 ((t2->z + t2->height <= s2->heightsec->floorplane.ZatPoint (t2->x, t2->y) &&
-			   t1->z >= s2->heightsec->floorplane.ZatPoint (t1->x, t1->y)) ||
-			  (t2->z >= s2->heightsec->ceilingplane.ZatPoint (t2->x, t2->y) &&
-			   t1->z + t2->height <= s2->heightsec->ceilingplane.ZatPoint (t1->x, t1->y)))))
+			 ((t2->Z() + t2->height <= s2->heightsec->floorplane.ZatPoint(t2) &&
+			   t1->Z() >= s2->heightsec->floorplane.ZatPoint(t1)) ||
+			  (t2->Z() >= s2->heightsec->ceilingplane.ZatPoint(t2) &&
+			   t1->Z() + t2->height <= s2->heightsec->ceilingplane.ZatPoint(t1)))))
 		{
 			res = false;
 			goto done;
@@ -713,7 +713,7 @@ sightcounts[0]++;
 	validcount++;
 	{
 		SightCheck s(t1, t2, flags);
-		res = s.P_SightPathTraverse (t1->x, t1->y, t2->x, t2->y);
+		res = s.P_SightPathTraverse (t1->X(), t1->Y(), t2->X(), t2->Y());
 	}
 
 done:

src/p_spec.cpp

@@ -433,7 +433,7 @@ void P_PlayerInSpecialSector (player_t *player, sector_t * sector)
 	{
 		// Falling, not all the way down yet?
 		sector = player->mo->Sector;
-		if (player->mo->z != sector->floorplane.ZatPoint(player->mo)
+		if (player->mo->Z() != sector->floorplane.ZatPoint(player->mo)
 			&& !player->mo->waterlevel)
 		{
 			return;
@@ -510,7 +510,7 @@ static void DoSectorDamage(AActor *actor, sector_t *sec, int amount, FName type,
 	if (!(flags & DAMAGE_PLAYERS) && actor->player != NULL)
 		return;
 
-	if (!(flags & DAMAGE_IN_AIR) && actor->z != sec->floorplane.ZatPoint(actor) && !actor->waterlevel)
+	if (!(flags & DAMAGE_IN_AIR) && actor->Z() != sec->floorplane.ZatPoint(actor) && !actor->waterlevel)
 		return;
 
 	if (protectClass != NULL)
@@ -556,12 +556,12 @@ void P_SectorDamage(int tag, int amount, FName type, const PClass *protectClass,
 					z1 = z2;
 					z2 = zz;
 				}
-				if (actor->z + actor->height > z1)
+				if (actor->Z() + actor->height > z1)
 				{
 					// If DAMAGE_IN_AIR is used, anything not beneath the 3D floor will be
 					// damaged (so, anything touching it or above it). Other 3D floors between
 					// the actor and this one will not stop this effect.
-					if ((flags & DAMAGE_IN_AIR) || actor->z <= z2)
+					if ((flags & DAMAGE_IN_AIR) || actor->Z() <= z2)
 					{
 						// Here we pass the DAMAGE_IN_AIR flag to disable the floor check, since it
 						// only works with the real sector's floor. We did the appropriate height checks
@@ -1078,7 +1078,7 @@ void P_SpawnSkybox(ASkyViewpoint *origin)
 	if (Sector == NULL)
 	{
 		Printf("Sector not initialized for SkyCamCompat\n");
-		origin->Sector = Sector = P_PointInSector(origin->x, origin->y);
+		origin->Sector = Sector = P_PointInSector(origin->X(), origin->Y());
 	}
 	if (Sector)
 	{
@@ -2189,8 +2189,8 @@ DPusher::DPusher (DPusher::EPusher type, line_t *l, int magnitude, int angle,
 	if (source) // point source exist?
 	{
 		m_Radius = (m_Magnitude) << (FRACBITS+1); // where force goes to zero
-		m_X = m_Source->x;
-		m_Y = m_Source->y;
+		m_X = m_Source->X();
+		m_Y = m_Source->Y();
 	}
 	m_Affectee = affectee;
 }
@@ -2305,7 +2305,7 @@ void DPusher::Tick ()
 		{
 			if (hsec == NULL)
 			{ // NOT special water sector
-				if (thing->z > thing->floorz) // above ground
+				if (thing->Z() > thing->floorz) // above ground
 				{
 					xspeed = m_Xmag; // full force
 					yspeed = m_Ymag;
@@ -2319,7 +2319,7 @@ void DPusher::Tick ()
 			else // special water sector
 			{
 				ht = hsec->floorplane.ZatPoint(thing);
-				if (thing->z > ht) // above ground
+				if (thing->Z() > ht) // above ground
 				{
 					xspeed = m_Xmag; // full force
 					yspeed = m_Ymag;
@@ -2347,7 +2347,7 @@ void DPusher::Tick ()
 			{ // special water sector
 				floor = &hsec->floorplane;
 			}
-			if (thing->z > floor->ZatPoint(thing))
+			if (thing->Z() > floor->ZatPoint(thing))
 			{ // above ground
 				xspeed = yspeed = 0; // no force
 			}

src/p_spec.h

@@ -903,6 +903,10 @@ bool EV_DoChange (line_t *line, EChange changetype, int tag);
 // P_TELEPT
 //
 void P_SpawnTeleportFog(AActor *mobj, fixed_t x, fixed_t y, fixed_t z, bool beforeTele = true, bool setTarget = false); //Spawns teleport fog. Pass the actor to pluck TeleFogFromType and TeleFogToType. 'from' determines if this is the fog to spawn at the old position (true) or new (false).
+inline void P_SpawnTeleportFog(AActor *mobj, const fixedvec3 &pos, bool beforeTele = true, bool setTarget = false)
+{
+	P_SpawnTeleportFog(mobj, pos.x, pos.y, pos.z, beforeTele, setTarget);
+}
 bool P_Teleport (AActor *thing, fixed_t x, fixed_t y, fixed_t z, angle_t angle, bool useFog, bool sourceFog, bool keepOrientation, bool haltVelocity = true, bool keepHeight = false);
 bool EV_Teleport (int tid, int tag, line_t *line, int side, AActor *thing, bool fog, bool sourceFog, bool keepOrientation, bool haltVelocity = true, bool keepHeight = false);
 bool EV_SilentLineTeleport (line_t *line, int side, AActor *thing, int id, INTBOOL reverse);

src/p_switch.cpp

@@ -138,8 +138,9 @@ bool P_CheckSwitchRange(AActor *user, line_t *line, int sideno)
 
 	P_MakeDivline (line, &dll);
 
-	dlu.x = user->x;
-	dlu.y = user->y;
+	fixedvec3 pos = user->PosRelative(line);
+	dlu.x = pos.x;
+	dlu.y = pos.y;
 	dlu.dx = finecosine[user->angle >> ANGLETOFINESHIFT];
 	dlu.dy = finesine[user->angle >> ANGLETOFINESHIFT];
 	inter = P_InterceptVector(&dll, &dlu);
@@ -167,11 +168,11 @@ bool P_CheckSwitchRange(AActor *user, line_t *line, int sideno)
 	onesided:
 		fixed_t sectorc = front->ceilingplane.ZatPoint(checkx, checky);
 		fixed_t sectorf = front->floorplane.ZatPoint(checkx, checky);
-		return (user->z + user->height >= sectorf && user->z <= sectorc);
+		return (user->Top() >= sectorf && user->Z() <= sectorc);
 	}
 
 	// Now get the information from the line.
-	P_LineOpening(open, NULL, line, checkx, checky, user->x, user->y);
+	P_LineOpening(open, NULL, line, checkx, checky, pos.x, pos.y);
 	if (open.range <= 0)
 		goto onesided;
 
@@ -187,8 +188,8 @@ bool P_CheckSwitchRange(AActor *user, line_t *line, int sideno)
 				if (!(rover->flags & FF_EXISTS)) continue;
 				if (!(rover->flags & FF_UPPERTEXTURE)) continue;
 
-				if (user->z > rover->top.plane->ZatPoint(checkx, checky) ||
-					user->z + user->height < rover->bottom.plane->ZatPoint(checkx, checky))
+				if (user->Z() > rover->top.plane->ZatPoint(checkx, checky) ||
+					user->Top() < rover->bottom.plane->ZatPoint(checkx, checky))
 					continue;
 
 				// This 3D floor depicts a switch texture in front of the player's eyes
@@ -196,7 +197,7 @@ bool P_CheckSwitchRange(AActor *user, line_t *line, int sideno)
 			}
 		}
 
-		return (user->z + user->height > open.top);
+		return (user->Top() > open.top);
 	}
 	else if ((TexMan.FindSwitch(side->GetTexture(side_t::bottom))) != NULL)
 	{
@@ -209,8 +210,8 @@ bool P_CheckSwitchRange(AActor *user, line_t *line, int sideno)
 				if (!(rover->flags & FF_EXISTS)) continue;
 				if (!(rover->flags & FF_LOWERTEXTURE)) continue;
 
-				if (user->z > rover->top.plane->ZatPoint(checkx, checky) ||
-					user->z + user->height < rover->bottom.plane->ZatPoint(checkx, checky))
+				if (user->Z() > rover->top.plane->ZatPoint(checkx, checky) ||
+					user->Top() < rover->bottom.plane->ZatPoint(checkx, checky))
 					continue;
 
 				// This 3D floor depicts a switch texture in front of the player's eyes
@@ -218,7 +219,7 @@ bool P_CheckSwitchRange(AActor *user, line_t *line, int sideno)
 			}
 		}
 
-		return (user->z < open.bottom);
+		return (user->Z() < open.bottom);
 	}
 	else if ((flags & ML_3DMIDTEX) || (TexMan.FindSwitch(side->GetTexture(side_t::mid))) != NULL)
 	{
@@ -226,12 +227,12 @@ bool P_CheckSwitchRange(AActor *user, line_t *line, int sideno)
 		// to keep compatibility with Eternity's implementation.
 		if (!P_GetMidTexturePosition(line, sideno, &checktop, &checkbot))
 			return false;
-		return user->z < checktop && user->z + user->height > checkbot;
+		return user->Z() < checktop && user->Top() > checkbot;
 	}
 	else
 	{
 		// no switch found. Check whether the player can touch either top or bottom texture
-		return (user->z + user->height > open.top) || (user->z < open.bottom);
+		return (user->Top() > open.top) || (user->Z() < open.bottom);
 	}
 }
 

src/p_teleport.cpp

@@ -101,9 +101,7 @@ bool P_Teleport (AActor *thing, fixed_t x, fixed_t y, fixed_t z, angle_t angle,
 {
 	bool predicting = (thing->player && (thing->player->cheats & CF_PREDICTING));
 
-	fixed_t oldx;
-	fixed_t oldy;
-	fixed_t oldz;
+	fixedvec3 old;
 	fixed_t aboveFloor;
 	player_t *player;
 	angle_t an;
@@ -112,10 +110,8 @@ bool P_Teleport (AActor *thing, fixed_t x, fixed_t y, fixed_t z, angle_t angle,
 	fixed_t floorheight, ceilingheight;
 	fixed_t missilespeed;
 
-	oldx = thing->x;
-	oldy = thing->y;
-	oldz = thing->z;
-	aboveFloor = thing->z - thing->floorz;
+	old = thing->Pos();
+	aboveFloor = thing->Z() - thing->floorz;
 	destsect = P_PointInSector (x, y);
 	// killough 5/12/98: exclude voodoo dolls:
 	player = thing->player;
@@ -171,7 +167,7 @@ bool P_Teleport (AActor *thing, fixed_t x, fixed_t y, fixed_t z, angle_t angle,
 	}
 	if (player)
 	{
-		player->viewz = thing->z + player->viewheight;
+		player->viewz = thing->Z() + player->viewheight;
 		if (resetpitch)
 		{
 			player->mo->pitch = 0;
@@ -188,7 +184,7 @@ bool P_Teleport (AActor *thing, fixed_t x, fixed_t y, fixed_t z, angle_t angle,
 	// Spawn teleport fog at source and destination
 	if (sourceFog && !predicting)
 	{
-		P_SpawnTeleportFog(thing, oldx, oldy, oldz, true, true); //Passes the actor through which then pulls the TeleFog metadata types based on properties.
+		P_SpawnTeleportFog(thing, old, true, true); //Passes the actor through which then pulls the TeleFog metadata types based on properties.
 	}
 	if (useFog)
 	{
@@ -196,7 +192,7 @@ bool P_Teleport (AActor *thing, fixed_t x, fixed_t y, fixed_t z, angle_t angle,
 		{
 			fixed_t fogDelta = thing->flags & MF_MISSILE ? 0 : TELEFOGHEIGHT;
 			an = angle >> ANGLETOFINESHIFT;
-			P_SpawnTeleportFog(thing, x + 20 * finecosine[an], y + 20 * finesine[an], thing->z + fogDelta, false, true);
+			P_SpawnTeleportFog(thing, x + 20 * finecosine[an], y + 20 * finesine[an], thing->Z() + fogDelta, false, true);
 
 		}
 		if (thing->player)
@@ -372,11 +368,11 @@ bool EV_Teleport (int tid, int tag, line_t *line, int side, AActor *thing, bool
 		velx = thing->velx;
 		vely = thing->vely;
 
-		z = searcher->z;
+		z = searcher->Z();
 	}
 	else if (searcher->IsKindOf (PClass::FindClass(NAME_TeleportDest2)))
 	{
-		z = searcher->z;
+		z = searcher->Z();
 	}
 	else
 	{
@@ -386,7 +382,7 @@ bool EV_Teleport (int tid, int tag, line_t *line, int side, AActor *thing, bool
 	{
 		badangle = 1 << ANGLETOFINESHIFT;
 	}
-	if (P_Teleport (thing, searcher->x, searcher->y, z, searcher->angle + badangle, fog, sourceFog, keepOrientation, haltVelocity, keepHeight))
+	if (P_Teleport (thing, searcher->X(), searcher->Y(), z, searcher->angle + badangle, fog, sourceFog, keepOrientation, haltVelocity, keepHeight))
 	{
 		// [RH] Lee Killough's changes for silent teleporters from BOOM
 		if (!fog && line && keepOrientation)
@@ -447,8 +443,8 @@ bool EV_SilentLineTeleport (line_t *line, int side, AActor *thing, int id, INTBO
 				}
 				else
 				{
-					SQWORD num = (SQWORD)(thing->x-line->v1->x)*line->dx + 
-								 (SQWORD)(thing->y-line->v1->y)*line->dy;
+					SQWORD num = (SQWORD)(thing->X()-line->v1->x)*line->dx + 
+								 (SQWORD)(thing->Y()-line->v1->y)*line->dy;
 					if (num <= 0)
 					{
 						pos = 0;
@@ -461,8 +457,8 @@ bool EV_SilentLineTeleport (line_t *line, int side, AActor *thing, int id, INTBO
 					{
 						pos = (SDWORD)(num / (den>>30));
 					}
-					nposx = thing->x - line->v1->x - MulScale30 (line->dx, pos);
-					nposy = thing->y - line->v1->y - MulScale30 (line->dy, pos);
+					nposx = thing->X() - line->v1->x - MulScale30 (line->dx, pos);
+					nposy = thing->Y() - line->v1->y - MulScale30 (line->dy, pos);
 				}
 			}
 
@@ -502,7 +498,7 @@ bool EV_SilentLineTeleport (line_t *line, int side, AActor *thing, int id, INTBO
 			bool stepdown = l->frontsector->floorplane.ZatPoint(x, y) < l->backsector->floorplane.ZatPoint(x, y);
 
 			// Height of thing above ground
-			fixed_t z = thing->z - thing->floorz;
+			fixed_t z = thing->Z() - thing->floorz;
 
 			// Side to exit the linedef on positionally.
 			//
@@ -615,16 +611,16 @@ bool EV_TeleportOther (int other_tid, int dest_tid, bool fog)
 static bool DoGroupForOne (AActor *victim, AActor *source, AActor *dest, bool floorz, bool fog)
 {
 	int an = (dest->angle - source->angle) >> ANGLETOFINESHIFT;
-	fixed_t offX = victim->x - source->x;
-	fixed_t offY = victim->y - source->y;
+	fixed_t offX = victim->X() - source->X();
+	fixed_t offY = victim->Y() - source->Y();
 	angle_t offAngle = victim->angle - source->angle;
 	fixed_t newX = DMulScale16 (offX, finecosine[an], -offY, finesine[an]);
 	fixed_t newY = DMulScale16 (offX, finesine[an], offY, finecosine[an]);
 
 	bool res =
-		P_Teleport (victim, dest->x + newX,
-							dest->y + newY,
-							floorz ? ONFLOORZ : dest->z + victim->z - source->z,
+		P_Teleport (victim, dest->X() + newX,
+							dest->Y() + newY,
+							floorz ? ONFLOORZ : dest->Z() + victim->Z() - source->Z(),
 							0, fog, fog, !fog);
 	// P_Teleport only changes angle if fog is true
 	victim->angle = dest->angle + offAngle;
@@ -692,8 +688,8 @@ bool EV_TeleportGroup (int group_tid, AActor *victim, int source_tid, int dest_t
 	if (moveSource && didSomething)
 	{
 		didSomething |=
-			P_Teleport (sourceOrigin, destOrigin->x, destOrigin->y,
-				floorz ? ONFLOORZ : destOrigin->z, 0, false, false, true);
+			P_Teleport (sourceOrigin, destOrigin->X(), destOrigin->Y(),
+				floorz ? ONFLOORZ : destOrigin->Z(), 0, false, false, true);
 		sourceOrigin->angle = destOrigin->angle;
 	}
 

src/p_things.cpp

@@ -691,9 +691,7 @@ int P_Thing_Warp(AActor *caller, AActor *reference, fixed_t xofs, fixed_t yofs,
 		caller = temp;
 	}
 
-	fixed_t	oldx = caller->X();
-	fixed_t	oldy = caller->Y();
-	fixed_t	oldz = caller->z;
+	fixedvec3 old = caller->Pos();
 	zofs += FixedMul(reference->height, heightoffset);
 	
 
@@ -725,18 +723,18 @@ int P_Thing_Warp(AActor *caller, AActor *reference, fixed_t xofs, fixed_t yofs,
 			// now the caller's floorz should be appropriate for the assigned xy-position
 			// assigning position again with.
 			// extra unlink, link and environment calculation
-			caller->SetOrigin(
-				reference->x + xofs + FixedMul(rad, finecosine[fineangle]),
-				reference->y + yofs + FixedMul(rad, finesine[fineangle]),
-				reference->z);
-			caller->z = caller->floorz + zofs;
+			caller->SetOrigin(reference->Vec3Offset(
+				xofs + FixedMul(rad, finecosine[fineangle]),
+				yofs + FixedMul(rad, finesine[fineangle]),
+				0), true);
+			caller->SetZ(caller->floorz + zofs);
 		}
 		else
 		{
-			caller->SetOrigin(
-				reference->x + xofs + FixedMul(rad, finecosine[fineangle]),
-				reference->y + yofs + FixedMul(rad, finesine[fineangle]),
-				reference->z + zofs);
+			caller->SetOrigin(reference->Vec3Offset(
+				 xofs + FixedMul(rad, finecosine[fineangle]),
+				 yofs + FixedMul(rad, finesine[fineangle]),
+				 zofs), true);
 		}
 	}
 	else // [MC] The idea behind "absolute" is meant to be "absolute". Override everything, just like A_SpawnItemEx's.
@@ -744,7 +742,7 @@ int P_Thing_Warp(AActor *caller, AActor *reference, fixed_t xofs, fixed_t yofs,
 		if (flags & WARPF_TOFLOOR)
 		{
 			caller->SetOrigin(xofs + FixedMul(rad, finecosine[fineangle]), yofs + FixedMul(rad, finesine[fineangle]), zofs);
-			caller->z = caller->floorz + zofs;
+			caller->SetZ(caller->floorz + zofs);
 		}
 		else
 		{
@@ -756,7 +754,7 @@ int P_Thing_Warp(AActor *caller, AActor *reference, fixed_t xofs, fixed_t yofs,
 	{
 		if (flags & WARPF_TESTONLY)
 		{
-			caller->SetOrigin(oldx, oldy, oldz);
+			caller->SetOrigin(old, true);
 		}
 		else
 		{
@@ -783,29 +781,29 @@ int P_Thing_Warp(AActor *caller, AActor *reference, fixed_t xofs, fixed_t yofs,
 
 			if (flags & WARPF_WARPINTERPOLATION)
 			{
-				caller->PrevX += caller->x - oldx;
-				caller->PrevY += caller->y - oldy;
-				caller->PrevZ += caller->z - oldz;
+				caller->PrevX += caller->X() - old.x;
+				caller->PrevY += caller->Y() - old.y;
+				caller->PrevZ += caller->Z() - old.z;
 			}
 			else if (flags & WARPF_COPYINTERPOLATION)
 			{
-				caller->PrevX = caller->x + reference->PrevX - reference->x;
-				caller->PrevY = caller->y + reference->PrevY - reference->y;
-				caller->PrevZ = caller->z + reference->PrevZ - reference->z;
+				caller->PrevX = caller->X() + reference->PrevX - reference->X();
+				caller->PrevY = caller->Y() + reference->PrevY - reference->Y();
+				caller->PrevZ = caller->Z() + reference->PrevZ - reference->Z();
 			}
 			else if (!(flags & WARPF_INTERPOLATE))
 			{
-				caller->PrevX = caller->x;
-				caller->PrevY = caller->y;
-				caller->PrevZ = caller->z;
+				caller->PrevX = caller->X();
+				caller->PrevY = caller->Y();
+				caller->PrevZ = caller->Z();
 			}
 			if ((flags & WARPF_BOB) && (reference->flags2 & MF2_FLOATBOB))
 			{
-				caller->z += reference->GetBobOffset();
+				caller->AddZ(reference->GetBobOffset());
 			}
 		}
 		return true;
 	}
-	caller->SetOrigin(oldx, oldy, oldz);
+	caller->SetOrigin(old, true);
 	return false;
 }

src/p_trace.cpp

@@ -524,12 +524,12 @@ cont:
 		hity = StartY + FixedMul (Vy, dist);
 		hitz = StartZ + FixedMul (Vz, dist);
 
-		if (hitz > in->d.thing->z + in->d.thing->height)
+		if (hitz > in->d.thing->Top())
 		{ // trace enters above actor
 			if (Vz >= 0) continue;      // Going up: can't hit
 			
 			// Does it hit the top of the actor?
-			dist = FixedDiv(in->d.thing->z + in->d.thing->height - StartZ, Vz);
+			dist = FixedDiv(in->d.thing->Top() - StartZ, Vz);
 
 			if (dist > MaxDist) continue;
 			in->frac = FixedDiv(dist, MaxDist);
@@ -539,15 +539,15 @@ cont:
 			hitz = StartZ + FixedMul (Vz, dist);
 
 			// calculated coordinate is outside the actor's bounding box
-			if (abs(hitx - in->d.thing->x) > in->d.thing->radius ||
-				abs(hity - in->d.thing->y) > in->d.thing->radius) continue;
+			if (abs(hitx - in->d.thing->X()) > in->d.thing->radius ||
+				abs(hity - in->d.thing->Y()) > in->d.thing->radius) continue;
 		}
-		else if (hitz < in->d.thing->z)
+		else if (hitz < in->d.thing->Z())
 		{ // trace enters below actor
 			if (Vz <= 0) continue;      // Going down: can't hit
 			
 			// Does it hit the bottom of the actor?
-			dist = FixedDiv(in->d.thing->z - StartZ, Vz);
+			dist = FixedDiv(in->d.thing->Z() - StartZ, Vz);
 			if (dist > MaxDist) continue;
 			in->frac = FixedDiv(dist, MaxDist);
 
@@ -556,8 +556,8 @@ cont:
 			hitz = StartZ + FixedMul (Vz, dist);
 
 			// calculated coordinate is outside the actor's bounding box
-			if (abs(hitx - in->d.thing->x) > in->d.thing->radius ||
-				abs(hity - in->d.thing->y) > in->d.thing->radius) continue;
+			if (abs(hitx - in->d.thing->X()) > in->d.thing->radius ||
+				abs(hity - in->d.thing->Y()) > in->d.thing->radius) continue;
 		}
 
 		// check for extrafloors first

src/p_user.cpp

@@ -671,10 +671,10 @@ void APlayerPawn::PostBeginPlay()
 	// Voodoo dolls: restore original floorz/ceilingz logic
 	if (player == NULL || player->mo != this)
 	{
-		dropoffz = floorz = Sector->floorplane.ZatPoint(x, y);
-		ceilingz = Sector->ceilingplane.ZatPoint(x, y);
+		dropoffz = floorz = Sector->floorplane.ZatPoint(this);
+		ceilingz = Sector->ceilingplane.ZatPoint(this);
 		P_FindFloorCeiling(this, FFCF_ONLYSPAWNPOS);
-		z = floorz;
+		SetZ(floorz);
 	}
 	else
 	{
@@ -1553,7 +1553,7 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SkullPop)
 	}
 
 	self->flags &= ~MF_SOLID;
-	mo = (APlayerPawn *)Spawn (spawntype, self->x, self->y, self->z + 48*FRACUNIT, NO_REPLACE);
+	mo = (APlayerPawn *)Spawn (spawntype, self->PosPlusZ(48*FRACUNIT), NO_REPLACE);
 	//mo->target = self;
 	mo->velx = pr_skullpop.Random2() << 9;
 	mo->vely = pr_skullpop.Random2() << 9;
@@ -1762,7 +1762,7 @@ void P_CalcHeight (player_t *player)
 
 	if (player->cheats & CF_NOVELOCITY)
 	{
-		player->viewz = player->mo->z + defaultviewheight;
+		player->viewz = player->mo->Z() + defaultviewheight;
 
 		if (player->viewz > player->mo->ceilingz-4*FRACUNIT)
 			player->viewz = player->mo->ceilingz-4*FRACUNIT;
@@ -1818,9 +1818,9 @@ void P_CalcHeight (player_t *player)
 	{
 		bob = 0;
 	}
-	player->viewz = player->mo->z + player->viewheight + bob;
+	player->viewz = player->mo->Z() + player->viewheight + bob;
 	if (player->mo->floorclip && player->playerstate != PST_DEAD
-		&& player->mo->z <= player->mo->floorz)
+		&& player->mo->Z() <= player->mo->floorz)
 	{
 		player->viewz -= player->mo->floorclip;
 	}
@@ -1863,7 +1863,7 @@ void P_MovePlayer (player_t *player)
 		mo->angle += cmd->ucmd.yaw << 16;
 	}
 
-	player->onground = (mo->z <= mo->floorz) || (mo->flags2 & MF2_ONMOBJ) || (mo->BounceFlags & BOUNCE_MBF) || (player->cheats & CF_NOCLIP2);
+	player->onground = (mo->Z() <= mo->floorz) || (mo->flags2 & MF2_ONMOBJ) || (mo->BounceFlags & BOUNCE_MBF) || (player->cheats & CF_NOCLIP2);
 
 	// killough 10/98:
 	//
@@ -1920,7 +1920,7 @@ void P_MovePlayer (player_t *player)
 		{
 			fprintf (debugfile, "move player for pl %d%c: (%d,%d,%d) (%d,%d) %d %d w%d [", int(player-players),
 				player->cheats&CF_PREDICTING?'p':' ',
-				player->mo->x, player->mo->y, player->mo->z,forwardmove, sidemove, movefactor, friction, player->mo->waterlevel);
+				player->mo->X(), player->mo->Y(), player->mo->Z(),forwardmove, sidemove, movefactor, friction, player->mo->waterlevel);
 			msecnode_t *n = player->mo->touching_sectorlist;
 			while (n != NULL)
 			{
@@ -2052,7 +2052,7 @@ void P_DeathThink (player_t *player)
 
 	P_MovePsprites (player);
 
-	player->onground = (player->mo->z <= player->mo->floorz);
+	player->onground = (player->mo->Z() <= player->mo->floorz);
 	if (player->mo->IsKindOf (RUNTIME_CLASS(APlayerChunk)))
 	{ // Flying bloody skull or flying ice chunk
 		player->viewheight = 6 * FRACUNIT;
@@ -2165,7 +2165,7 @@ void P_CrouchMove(player_t * player, int direction)
 
 	// check whether the move is ok
 	player->mo->height = FixedMul(defaultheight, player->crouchfactor);
-	if (!P_TryMove(player->mo, player->mo->x, player->mo->y, false, NULL))
+	if (!P_TryMove(player->mo, player->mo->X(), player->mo->Y(), false, NULL))
 	{
 		player->mo->height = savedheight;
 		if (direction > 0)
@@ -2182,7 +2182,7 @@ void P_CrouchMove(player_t * player, int direction)
 	player->crouchviewdelta = player->viewheight - player->mo->ViewHeight;
 
 	// Check for eyes going above/below fake floor due to crouching motion.
-	P_CheckFakeFloorTriggers(player->mo, player->mo->z + oldheight, true);
+	P_CheckFakeFloorTriggers(player->mo, player->mo->Z() + oldheight, true);
 }
 
 //----------------------------------------------------------------------------
@@ -2203,7 +2203,7 @@ void P_PlayerThink (player_t *player)
 	if (debugfile && !(player->cheats & CF_PREDICTING))
 	{
 		fprintf (debugfile, "tic %d for pl %td: (%d, %d, %d, %u) b:%02x p:%d y:%d f:%d s:%d u:%d\n",
-			gametic, player-players, player->mo->x, player->mo->y, player->mo->z,
+			gametic, player-players, player->mo->X(), player->mo->Y(), player->mo->Z(),
 			player->mo->angle>>ANGLETOFINESHIFT, player->cmd.ucmd.buttons,
 			player->cmd.ucmd.pitch, player->cmd.ucmd.yaw, player->cmd.ucmd.forwardmove,
 			player->cmd.ucmd.sidemove, player->cmd.ucmd.upmove);
@@ -2329,7 +2329,7 @@ void P_PlayerThink (player_t *player)
 				player->crouching = 0;
 			}
 			if (crouchdir == 1 && player->crouchfactor < FRACUNIT &&
-				player->mo->z + player->mo->height < player->mo->ceilingz)
+				player->mo->Top() < player->mo->ceilingz)
 			{
 				P_CrouchMove(player, 1);
 			}
@@ -2542,8 +2542,7 @@ void P_PlayerThink (player_t *player)
 		P_PlayerOnSpecial3DFloor (player);
 		P_PlayerInSpecialSector (player);
 
-		if (player->mo->z <= player->mo->Sector->floorplane.ZatPoint(
-			player->mo->x, player->mo->y) ||
+		if (player->mo->Z() <= player->mo->Sector->floorplane.ZatPoint(player->mo) ||
 			player->mo->waterlevel)
 		{
 			// Player must be touching the floor
@@ -2697,7 +2696,7 @@ void P_PredictPlayer (player_t *player)
 	PredictionPlayerBackup = *player;
 
 	APlayerPawn *act = player->mo;
-	memcpy(PredictionActorBackup, &act->x, sizeof(APlayerPawn) - ((BYTE *)&act->x - (BYTE *)act));
+	memcpy(PredictionActorBackup, &act->snext, sizeof(APlayerPawn) - ((BYTE *)&act->snext - (BYTE *)act));
 
 	act->flags &= ~MF_PICKUP;
 	act->flags2 &= ~MF2_PUSHWALL;
@@ -2769,16 +2768,16 @@ void P_PredictPlayer (player_t *player)
 		{
 			// Z is not compared as lifts will alter this with no apparent change
 			// Make lerping less picky by only testing whole units
-			DoLerp = ((PredictionLast.x >> 16) != (player->mo->x >> 16) ||
-				(PredictionLast.y >> 16) != (player->mo->y >> 16));
+			DoLerp = ((PredictionLast.x >> 16) != (player->mo->X() >> 16) ||
+				(PredictionLast.y >> 16) != (player->mo->Y() >> 16));
 
 			// Aditional Debug information
 			if (developer && DoLerp)
 			{
 				DPrintf("Lerp! Ltic (%d) && Ptic (%d) | Lx (%d) && Px (%d) | Ly (%d) && Py (%d)\n",
 					PredictionLast.gametic, i,
-					(PredictionLast.x >> 16), (player->mo->x >> 16),
-					(PredictionLast.y >> 16), (player->mo->y >> 16));
+					(PredictionLast.x >> 16), (player->mo->X() >> 16),
+					(PredictionLast.y >> 16), (player->mo->Y() >> 16));
 			}
 		}
 	}
@@ -2796,9 +2795,9 @@ void P_PredictPlayer (player_t *player)
 		}
 
 		PredictionLast.gametic = maxtic - 1;
-		PredictionLast.x = player->mo->x;
-		PredictionLast.y = player->mo->y;
-		PredictionLast.z = player->mo->z;
+		PredictionLast.x = player->mo->X();
+		PredictionLast.y = player->mo->Y();
+		PredictionLast.z = player->mo->Z();
 
 		if (PredictionLerptics > 0)
 		{
@@ -2806,9 +2805,7 @@ void P_PredictPlayer (player_t *player)
 				P_LerpCalculate(PredictionLerpFrom, PredictionLast, PredictionLerpResult, (float)PredictionLerptics * cl_predict_lerpscale))
 			{
 				PredictionLerptics++;
-				player->mo->x = PredictionLerpResult.x;
-				player->mo->y = PredictionLerpResult.y;
-				player->mo->z = PredictionLerpResult.z;
+				player->mo->SetXYZ(PredictionLerpResult.x, PredictionLerpResult.y, PredictionLerpResult.z);
 			}
 			else
 			{
@@ -2840,7 +2837,7 @@ void P_UnPredictPlayer ()
 		player->camera = savedcamera;
 
 		act->UnlinkFromWorld();
-		memcpy(&act->x, PredictionActorBackup, sizeof(APlayerPawn) - ((BYTE *)&act->x - (BYTE *)act));
+		memcpy(&act->snext, PredictionActorBackup, sizeof(APlayerPawn) - ((BYTE *)&act->snext - (BYTE *)act));
 
 		// The blockmap ordering needs to remain unchanged, too.
 		// Restore sector links and refrences.
@@ -3114,7 +3111,7 @@ void player_t::Serialize (FArchive &arc)
 	}
 	else
 	{
-		onground = (mo->z <= mo->floorz) || (mo->flags2 & MF2_ONMOBJ) || (mo->BounceFlags & BOUNCE_MBF) || (cheats & CF_NOCLIP2);
+		onground = (mo->Z() <= mo->floorz) || (mo->flags2 & MF2_ONMOBJ) || (mo->BounceFlags & BOUNCE_MBF) || (cheats & CF_NOCLIP2);
 	}
 
 	if (SaveVersion < 4514 && IsBot)

src/p_writemap.cpp

@@ -98,8 +98,8 @@ static int WriteTHINGS (FILE *file)
 	mapthinghexen_t mt = { 0, 0, 0, 0, 0, 0, 0, 0, {0} };
 	AActor *mo = players[consoleplayer].mo;
 
-	mt.x = LittleShort(short(mo->x >> FRACBITS));
-	mt.y = LittleShort(short(mo->y >> FRACBITS));
+	mt.x = LittleShort(short(mo->X() >> FRACBITS));
+	mt.y = LittleShort(short(mo->Y() >> FRACBITS));
 	mt.angle = LittleShort(short(MulScale32 (mo->angle >> ANGLETOFINESHIFT, 360)));
 	mt.type = LittleShort((short)1);
 	mt.flags = LittleShort((short)(7|224|MTF_SINGLE));

src/po_man.cpp

@@ -901,7 +901,8 @@ void FPolyObj::ThrustMobj (AActor *actor, side_t *side)
 	actor->vely += thrustY;
 	if (crush)
 	{
-		if (bHurtOnTouch || !P_CheckMove (actor, actor->x + thrustX, actor->y + thrustY))
+		fixedvec2 pos = actor->Vec2Offset(thrustX, thrustY);
+		if (bHurtOnTouch || !P_CheckMove (actor, pos.x, pos.y))
 		{
 			int newdam = P_DamageMobj (actor, NULL, NULL, crush, NAME_Crush);
 			P_TraceBleed (newdam > 0 ? newdam : crush, actor);
@@ -1199,8 +1200,8 @@ bool FPolyObj::CheckMobjBlocking (side_t *sd)
 							&& !((mobj->flags & MF_FLOAT) && (ld->flags & ML_BLOCK_FLOATERS))
 							&& (!(ld->flags & ML_3DMIDTEX) ||
 								(!P_LineOpening_3dMidtex(mobj, ld, open) &&
-									(mobj->z + mobj->height < open.top)
-								) || (open.abovemidtex && mobj->z > mobj->floorz))
+									(mobj->Top() < open.top)
+								) || (open.abovemidtex && mobj->Z() > mobj->floorz))
 							)
 						{
 							// [BL] We can't just continue here since we must
@@ -1213,7 +1214,7 @@ bool FPolyObj::CheckMobjBlocking (side_t *sd)
 							performBlockingThrust = true;
 						}
 
-						FBoundingBox box(mobj->x, mobj->y, mobj->radius);
+						FBoundingBox box(mobj->X(), mobj->Y(), mobj->radius);
 
 						if (box.Right() <= ld->bbox[BOXLEFT]
 							|| box.Left() >= ld->bbox[BOXRIGHT]
@@ -1231,15 +1232,15 @@ bool FPolyObj::CheckMobjBlocking (side_t *sd)
 						// Best use the one facing the player and ignore the back side.
 						if (ld->sidedef[1] != NULL)
 						{
-							int side = P_PointOnLineSidePrecise(mobj->x, mobj->y, ld);
+							int side = P_PointOnLineSidePrecise(mobj->X(), mobj->Y(), ld);
 							if (ld->sidedef[side] != sd)
 							{
 								continue;
 							}
 							// [BL] See if we hit below the floor/ceiling of the poly.
 							else if(!performBlockingThrust && (
-									mobj->z < ld->sidedef[!side]->sector->GetSecPlane(sector_t::floor).ZatPoint(mobj) ||
-									mobj->z + mobj->height > ld->sidedef[!side]->sector->GetSecPlane(sector_t::ceiling).ZatPoint(mobj)
+									mobj->Z() < ld->sidedef[!side]->sector->GetSecPlane(sector_t::floor).ZatPoint(mobj) ||
+									mobj->Top() > ld->sidedef[!side]->sector->GetSecPlane(sector_t::ceiling).ZatPoint(mobj)
 								))
 							{
 								performBlockingThrust = true;

src/r_data/r_interpolate.cpp

@@ -157,7 +157,10 @@ public:
 //
 //==========================================================================
 
-IMPLEMENT_ABSTRACT_CLASS(DInterpolation)
+IMPLEMENT_ABSTRACT_POINTY_CLASS(DInterpolation)
+DECLARE_POINTER(Next)
+DECLARE_POINTER(Prev)
+END_POINTERS
 IMPLEMENT_CLASS(DSectorPlaneInterpolation)
 IMPLEMENT_CLASS(DSectorScrollInterpolation)
 IMPLEMENT_CLASS(DWallScrollInterpolation)
@@ -213,9 +216,9 @@ void FInterpolator::UpdateInterpolations()
 void FInterpolator::AddInterpolation(DInterpolation *interp)
 {
 	interp->Next = Head;
-	if (Head != NULL) Head->Prev = &interp->Next;
+	if (Head != NULL) Head->Prev = interp;
+	interp->Prev = NULL;
 	Head = interp;
-	interp->Prev = &Head;
 	count++;
 }
 
@@ -227,14 +230,19 @@ void FInterpolator::AddInterpolation(DInterpolation *interp)
 
 void FInterpolator::RemoveInterpolation(DInterpolation *interp)
 {
-	if (interp->Prev != NULL)
+	if (Head == interp)
 	{
-		*interp->Prev = interp->Next;
+		Head = interp->Next;
+		if (Head != NULL) Head->Prev = NULL;
+	}
+	else
+	{
+		if (interp->Prev != NULL) interp->Prev->Next = interp->Next;
 		if (interp->Next != NULL) interp->Next->Prev = interp->Prev;
+	}
 		interp->Next = NULL;
 		interp->Prev = NULL;
 		count--;
-	}
 }
 
 //==========================================================================
@@ -285,13 +293,15 @@ void FInterpolator::RestoreInterpolations()
 
 void FInterpolator::ClearInterpolations()
 {
-	for (DInterpolation *probe = Head; probe != NULL; )
+	DInterpolation *probe = Head;
+	Head = NULL;
+	while (probe != NULL)
 	{
 		DInterpolation *next = probe->Next;
+		probe->Next = probe->Prev = NULL;
 		probe->Destroy();
 		probe = next;
 	}
-	Head = NULL;
 }
 
 
@@ -334,10 +344,6 @@ int DInterpolation::AddRef()
 int DInterpolation::DelRef()
 {
 	if (refcount > 0) --refcount;
-	if (refcount <= 0 && !(ObjectFlags & OF_EuthanizeMe))
-	{
-		Destroy();
-	}
 	return refcount;
 }
 
@@ -486,9 +492,16 @@ void DSectorPlaneInterpolation::Interpolate(fixed_t smoothratio)
 	bakheight = *pheight;
 	baktexz = sector->GetPlaneTexZ(pos);
 
+	if (refcount == 0 && oldheight == bakheight)
+	{
+		Destroy();
+	}
+	else
+	{
 	*pheight = oldheight + FixedMul(bakheight - oldheight, smoothratio);
 	sector->SetPlaneTexZ(pos, oldtexz + FixedMul(baktexz - oldtexz, smoothratio), true);
 	P_RecalculateAttached3DFloors(sector);
+	}
 }
 
 //==========================================================================
@@ -612,8 +625,15 @@ void DSectorScrollInterpolation::Interpolate(fixed_t smoothratio)
 	bakx = sector->GetXOffset(ceiling);
 	baky = sector->GetYOffset(ceiling, false);
 
-	sector->SetXOffset(ceiling, oldx + FixedMul(bakx - oldx, smoothratio));
-	sector->SetYOffset(ceiling, oldy + FixedMul(baky - oldy, smoothratio));
+	if (refcount == 0 && oldx == bakx && oldy == baky)
+	{
+		Destroy();
+	}
+	else
+	{
+		sector->SetXOffset(ceiling, oldx + FixedMul(bakx - oldx, smoothratio));
+		sector->SetYOffset(ceiling, oldy + FixedMul(baky - oldy, smoothratio));
+	}
 }
 
 //==========================================================================
@@ -696,8 +716,15 @@ void DWallScrollInterpolation::Interpolate(fixed_t smoothratio)
 	bakx = side->GetTextureXOffset(part);
 	baky = side->GetTextureYOffset(part);
 
-	side->SetTextureXOffset(part, oldx + FixedMul(bakx - oldx, smoothratio));
-	side->SetTextureYOffset(part, oldy + FixedMul(baky - oldy, smoothratio));
+	if (refcount == 0 && oldx == bakx && oldy == baky)
+	{
+		Destroy();
+	}
+	else
+	{
+		side->SetTextureXOffset(part, oldx + FixedMul(bakx - oldx, smoothratio));
+		side->SetTextureYOffset(part, oldy + FixedMul(baky - oldy, smoothratio));
+	}
 }
 
 //==========================================================================
@@ -788,6 +815,7 @@ void DPolyobjInterpolation::Restore()
 
 void DPolyobjInterpolation::Interpolate(fixed_t smoothratio)
 {
+	bool changed = false;
 	for(unsigned int i = 0; i < poly->Vertices.Size(); i++)
 	{
 		fixed_t *px = &poly->Vertices[i]->x;
@@ -796,15 +824,26 @@ void DPolyobjInterpolation::Interpolate(fixed_t smoothratio)
 		bakverts[i*2  ] = *px;
 		bakverts[i*2+1] = *py;
 
-		*px = oldverts[i*2  ] + FixedMul(bakverts[i*2  ] - oldverts[i*2  ], smoothratio);
-		*py = oldverts[i*2+1] + FixedMul(bakverts[i*2+1] - oldverts[i*2+1], smoothratio);
+		if (bakverts[i * 2] != oldverts[i * 2] || bakverts[i * 2 + i] != oldverts[i * 2 + 1])
+		{
+			changed = true;
+			*px = oldverts[i * 2] + FixedMul(bakverts[i * 2] - oldverts[i * 2], smoothratio);
+			*py = oldverts[i * 2 + 1] + FixedMul(bakverts[i * 2 + 1] - oldverts[i * 2 + 1], smoothratio);
+		}
 	}
-	bakcx = poly->CenterSpot.x;
-	bakcy = poly->CenterSpot.y;
-	poly->CenterSpot.x = bakcx + FixedMul(bakcx - oldcx, smoothratio);
-	poly->CenterSpot.y = bakcy + FixedMul(bakcy - oldcy, smoothratio);
+	if (refcount == 0 && !changed)
+	{
+		Destroy();
+	}
+	else
+	{
+		bakcx = poly->CenterSpot.x;
+		bakcy = poly->CenterSpot.y;
+		poly->CenterSpot.x = bakcx + FixedMul(bakcx - oldcx, smoothratio);
+		poly->CenterSpot.y = bakcy + FixedMul(bakcy - oldcy, smoothratio);
 
-	poly->ClearSubsectorLinks();
+		poly->ClearSubsectorLinks();
+	}
 }
 
 //==========================================================================

src/r_data/r_interpolate.h

@@ -13,12 +13,14 @@ class DInterpolation : public DObject
 	friend struct FInterpolator;
 
 	DECLARE_ABSTRACT_CLASS(DInterpolation, DObject)
+	HAS_OBJECT_POINTERS
 
-	DInterpolation *Next;
-	DInterpolation **Prev;
-	int refcount;
+	TObjPtr<DInterpolation> Next;
+	TObjPtr<DInterpolation> Prev;
 
 protected:
+	int refcount;
+
 	DInterpolation();
 
 public:
@@ -40,7 +42,7 @@ public:
 
 struct FInterpolator
 {
-	DInterpolation *Head;
+	TObjPtr<DInterpolation> Head;
 	bool didInterp;
 	int count;
 

src/r_plane.cpp

@@ -1224,9 +1224,10 @@ void R_DrawSkyBoxes ()
 			extralight = 0;
 			R_SetVisibility (sky->args[0] * 0.25f);
 
-			viewx = sky->PrevX + FixedMul(r_TicFrac, sky->x - sky->PrevX);
-			viewy = sky->PrevY + FixedMul(r_TicFrac, sky->y - sky->PrevY);
-			viewz = sky->PrevZ + FixedMul(r_TicFrac, sky->z - sky->PrevZ);
+			fixedvec3 viewpos = sky->InterpolatedPosition(r_TicFrac);
+			viewx = viewpos.x;
+			viewy = viewpos.y;
+			viewz = viewpos.z;
 			viewangle = savedangle + sky->PrevAngle + FixedMul(r_TicFrac, sky->angle - sky->PrevAngle);
 
 			R_CopyStackedViewParameters();
@@ -1235,8 +1236,8 @@ void R_DrawSkyBoxes ()
 		{
 			extralight = pl->extralight;
 			R_SetVisibility (pl->visibility);
-			viewx = pl->viewx - sky->Mate->x + sky->x;
-			viewy = pl->viewy - sky->Mate->y + sky->y;
+			viewx = pl->viewx - sky->Mate->X() + sky->X();
+			viewy = pl->viewy - sky->Mate->Y() + sky->Y();
 			viewz = pl->viewz;
 			viewangle = pl->viewangle;
 		}

src/r_things.cpp

@@ -670,9 +670,10 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
 	}
 
 	// [RH] Interpolate the sprite's position to make it look smooth
-	fx = thing->PrevX + FixedMul (r_TicFrac, thing->x - thing->PrevX);
-	fy = thing->PrevY + FixedMul (r_TicFrac, thing->y - thing->PrevY);
-	fz = thing->PrevZ + FixedMul (r_TicFrac, thing->z - thing->PrevZ) + thing->GetBobOffset(r_TicFrac);
+	fixedvec3 pos = thing->InterpolatedPosition(r_TicFrac);
+	fx = pos.x;
+	fy = pos.y;
+	fz = pos.z +thing->GetBobOffset(r_TicFrac);
 
 	tex = NULL;
 	voxel = NULL;
@@ -1145,12 +1146,12 @@ void R_AddSprites (sector_t *sec, int lightlevel, int fakeside)
 			{
 				if(!(rover->top.plane->a) && !(rover->top.plane->b))
 				{
-					if(rover->top.plane->Zat0() <= thing->z) fakefloor = rover;
+					if(rover->top.plane->Zat0() <= thing->Z()) fakefloor = rover;
 				}
 			}
 			if(!(rover->bottom.plane->a) && !(rover->bottom.plane->b))
 			{
-				if(rover->bottom.plane->Zat0() >= thing->z + thing->height) fakeceiling = rover;
+				if(rover->bottom.plane->Zat0() >= thing->Top()) fakeceiling = rover;
 			}
 		}	
 		R_ProjectSprite (thing, fakeside, fakefloor, fakeceiling);

src/r_utility.cpp

@@ -587,8 +587,8 @@ void R_InterpolateView (player_t *player, fixed_t frac, InterpolationViewer *ivi
 		player - players == consoleplayer &&
 		camera == player->mo &&
 		!demoplayback &&
-		iview->nviewx == camera->x &&
-		iview->nviewy == camera->y && 
+		iview->nviewx == camera->X() &&
+		iview->nviewy == camera->Y() && 
 		!(player->cheats & (CF_TOTALLYFROZEN|CF_FROZEN)) &&
 		player->playerstate == PST_LIVE &&
 		player->mo->reactiontime == 0 &&
@@ -839,9 +839,9 @@ void R_SetupFrame (AActor *actor)
 	}
 	else
 	{
-		iview->nviewx = camera->x;
-		iview->nviewy = camera->y;
-		iview->nviewz = camera->player ? camera->player->viewz : camera->z + camera->GetClass()->Meta.GetMetaFixed(AMETA_CameraHeight);
+		iview->nviewx = camera->X();
+		iview->nviewy = camera->Y();
+		iview->nviewz = camera->player ? camera->player->viewz : camera->Z() + camera->GetClass()->Meta.GetMetaFixed(AMETA_CameraHeight);
 		viewsector = camera->Sector;
 		r_showviewer = false;
 	}

src/s_sound.cpp

@@ -175,9 +175,10 @@ void S_NoiseDebug (void)
 		return;
 	}
 
-	listener.X = FIXED2FLOAT(players[consoleplayer].camera->x);
-	listener.Y = FIXED2FLOAT(players[consoleplayer].camera->z);
-	listener.Z = FIXED2FLOAT(players[consoleplayer].camera->y);
+
+	listener.X = FIXED2FLOAT(players[consoleplayer].camera->SoundX());
+	listener.Y = FIXED2FLOAT(players[consoleplayer].camera->SoundZ());
+	listener.Z = FIXED2FLOAT(players[consoleplayer].camera->SoundY());
 
 	// Display the oldest channel first.
 	for (chan = Channels; chan->NextChan != NULL; chan = chan->NextChan)
@@ -666,9 +667,9 @@ static void CalcPosVel(int type, const AActor *actor, const sector_t *sector,
 
 		if (players[consoleplayer].camera != NULL)
 		{
-			x = players[consoleplayer].camera->x;
-			y = players[consoleplayer].camera->z;
-			z = players[consoleplayer].camera->y;
+			x = players[consoleplayer].camera->SoundX();
+			y = players[consoleplayer].camera->SoundZ();
+			z = players[consoleplayer].camera->SoundY();
 		}
 		else
 		{
@@ -685,9 +686,9 @@ static void CalcPosVel(int type, const AActor *actor, const sector_t *sector,
 //			assert(actor != NULL);
 			if (actor != NULL)
 			{
-				x = actor->x;
-				y = actor->z;
-				z = actor->y;
+				x = actor->SoundX();
+				y = actor->SoundZ();
+				z = actor->SoundY();
 			}
 			break;
 
@@ -723,7 +724,7 @@ static void CalcPosVel(int type, const AActor *actor, const sector_t *sector,
 		{
 			if ((chanflags & CHAN_LISTENERZ) && players[consoleplayer].camera != NULL)
 			{
-				y = players[consoleplayer].camera != NULL ? players[consoleplayer].camera->z : 0;
+				y = players[consoleplayer].camera != NULL ? players[consoleplayer].camera->SoundZ() : 0;
 			}
 			pos->X = FIXED2FLOAT(x);
 			pos->Y = FIXED2FLOAT(y);
@@ -763,8 +764,8 @@ static void CalcSectorSoundOrg(const sector_t *sec, int channum, fixed_t *x, fix
 		// Are we inside the sector? If yes, the closest point is the one we're on.
 		if (P_PointInSector(*x, *y) == sec)
 		{
-			*x = players[consoleplayer].camera->x;
-			*y = players[consoleplayer].camera->y;
+			*x = players[consoleplayer].camera->SoundX();
+			*y = players[consoleplayer].camera->SoundY();
 		}
 		else
 		{
@@ -1567,9 +1568,9 @@ void S_RelinkSound (AActor *from, AActor *to)
 			{
 				chan->Actor = NULL;
 				chan->SourceType = SOURCE_Unattached;
-				chan->Point[0] = FIXED2FLOAT(from->x);
-				chan->Point[1] = FIXED2FLOAT(from->z);
-				chan->Point[2] = FIXED2FLOAT(from->y);
+				chan->Point[0] = FIXED2FLOAT(from->SoundX());
+				chan->Point[1] = FIXED2FLOAT(from->SoundZ());
+				chan->Point[2] = FIXED2FLOAT(from->SoundY());
 			}
 			else
 			{
@@ -1959,9 +1960,9 @@ static void S_SetListener(SoundListener &listener, AActor *listenactor)
 		listener.velocity.Z = listenactor->vely * (TICRATE/65536.f);
 		*/
 		listener.velocity.Zero();
-		listener.position.X = FIXED2FLOAT(listenactor->x);
-		listener.position.Y = FIXED2FLOAT(listenactor->z);
-		listener.position.Z = FIXED2FLOAT(listenactor->y);
+		listener.position.X = FIXED2FLOAT(listenactor->SoundX());
+		listener.position.Y = FIXED2FLOAT(listenactor->SoundZ());
+		listener.position.Z = FIXED2FLOAT(listenactor->SoundY());
 		listener.underwater = listenactor->waterlevel == 3;
 		assert(zones != NULL);
 		listener.Environment = zones[listenactor->Sector->ZoneNumber].Environment;
@@ -2640,10 +2641,7 @@ CCMD (loopsound)
 		}
 		else
 		{
-			AActor *icon = Spawn("SpeakerIcon", players[consoleplayer].mo->x,
-				players[consoleplayer].mo->y,
-				players[consoleplayer].mo->z + 32*FRACUNIT,
-				ALLOW_REPLACE);
+			AActor *icon = Spawn("SpeakerIcon", players[consoleplayer].mo->PosPlusZ(32*FRACUNIT), ALLOW_REPLACE);
 			if (icon != NULL)
 			{
 				S_Sound(icon, CHAN_BODY | CHAN_LOOP, id, 1.f, ATTN_IDLE);

src/sound/i_musicinterns.h

@@ -600,9 +600,9 @@ public:
 protected:
 	void Heapify();
 
-	unsigned int Parent(unsigned int i) { return (i + 1u) / 2u - 1u; }
-	unsigned int Left(unsigned int i) { return (i + 1u) * 2u - 1u; }
-	unsigned int Right(unsigned int i) { return (i + 1u) * 2u; }
+	unsigned int Parent(unsigned int i) const { return (i + 1u) / 2u - 1u; }
+	unsigned int Left(unsigned int i) const { return (i + 1u) * 2u - 1u; }
+	unsigned int Right(unsigned int i) const { return (i + 1u) * 2u; }
 };
 
 class HMISong : public MIDIStreamer
@@ -630,7 +630,7 @@ protected:
 	struct TrackInfo;
 
 	void ProcessInitialMetaEvents ();
-	DWORD *SendCommand (DWORD *event, TrackInfo *track, DWORD delay);
+	DWORD *SendCommand (DWORD *event, TrackInfo *track, DWORD delay, ptrdiff_t room, bool &sysex_noroom);
 	TrackInfo *FindNextDue ();
 
 	static DWORD ReadVarLenHMI(TrackInfo *);
@@ -673,7 +673,7 @@ protected:
 	void AdvanceSong(DWORD time);
 
 	void ProcessInitialMetaEvents();
-	DWORD *SendCommand (DWORD *event, EventSource track, DWORD delay);
+	DWORD *SendCommand (DWORD *event, EventSource track, DWORD delay, ptrdiff_t room, bool &sysex_noroom);
 	EventSource FindNextDue();
 
 	BYTE *MusHeader;

src/sound/music_hmi_midiout.cpp

@@ -523,7 +523,12 @@ DWORD *HMISong::MakeEvents(DWORD *events, DWORD *max_event_p, DWORD max_time)
 			// Play all events for this tick.
 			do
 			{
-				DWORD *new_events = SendCommand(events, TrackDue, time);
+				bool sysex_noroom = false;
+				DWORD *new_events = SendCommand(events, TrackDue, time, max_event_p - events, sysex_noroom);
+				if (sysex_noroom)
+				{
+					return events;
+				}
 				TrackDue = FindNextDue();
 				if (new_events != events)
 				{
@@ -568,7 +573,7 @@ void HMISong::AdvanceTracks(DWORD time)
 //
 //==========================================================================
 
-DWORD *HMISong::SendCommand (DWORD *events, TrackInfo *track, DWORD delay)
+DWORD *HMISong::SendCommand (DWORD *events, TrackInfo *track, DWORD delay, ptrdiff_t room, bool &sysex_noroom)
 {
 	DWORD len;
 	BYTE event, data1 = 0, data2 = 0;
@@ -584,10 +589,20 @@ DWORD *HMISong::SendCommand (DWORD *events, TrackInfo *track, DWORD delay)
 		return events + 3;
 	}
 
+	sysex_noroom = false;
+	size_t start_p = track->TrackP;
+
 	CHECK_FINISHED
 	event = track->TrackBegin[track->TrackP++];
 	CHECK_FINISHED
 
+	// The actual event type will be filled in below. If it's not a NOP,
+	// the events pointer will be advanced once the actual event is written.
+	// Otherwise, we do it at the end of the function.
+	events[0] = delay;
+	events[1] = 0;
+	events[2] = MEVT_NOP << 24;
+
 	if (event != MIDI_SYSEX && event != MIDI_META && event != MIDI_SYSEXEND && event != 0xFe)
 	{
 		// Normal short message
@@ -626,17 +641,10 @@ DWORD *HMISong::SendCommand (DWORD *events, TrackInfo *track, DWORD delay)
 			data2 = VolumeControllerChange(event & 15, data2);
 		}
 
-		events[0] = delay;
-		events[1] = 0;
 		if (event != MIDI_META)
 		{
 			events[2] = event | (data1<<8) | (data2<<16);
 		}
-		else
-		{
-			events[2] = MEVT_NOP << 24;
-		}
-		events += 3;
 
 		if (ReadVarLen == ReadVarLenHMI && (event & 0x70) == (MIDI_NOTEON & 0x70))
 		{ // HMI note on events include the time until an implied note off event.
@@ -645,13 +653,41 @@ DWORD *HMISong::SendCommand (DWORD *events, TrackInfo *track, DWORD delay)
 	}
 	else
 	{
-		// Skip SysEx events just because I don't want to bother with them.
-		// The old MIDI player ignored them too, so this won't break
-		// anything that played before.
+		// SysEx events could potentially not have enough room in the buffer...
 		if (event == MIDI_SYSEX || event == MIDI_SYSEXEND)
 		{
 			len = ReadVarLen(track);
-			track->TrackP += len;
+			if (len >= (MAX_EVENTS-1)*3*4)
+			{ // This message will never fit. Throw it away.
+				track->TrackP += len;
+			}
+			else if (len + 12 >= (size_t)room * 4)
+			{ // Not enough room left in this buffer. Backup and wait for the next one.
+				track->TrackP = start_p;
+				sysex_noroom = true;
+				return events;
+			}
+			else
+			{
+				BYTE *msg = (BYTE *)&events[3];
+				if (event == MIDI_SYSEX)
+				{ // Need to add the SysEx marker to the message.
+					events[2] = (MEVT_LONGMSG << 24) | (len + 1);
+					*msg++ = MIDI_SYSEX;
+				}
+				else
+				{
+					events[2] = (MEVT_LONGMSG << 24) | len;
+				}
+				memcpy(msg, &track->TrackBegin[track->TrackP], len);
+				msg += len;
+				// Must pad with 0
+				while ((size_t)msg & 3)
+				{
+					*msg++ = 0;
+				}
+				track->TrackP += len;
+			}
 		}
 		else if (event == MIDI_META)
 		{
@@ -677,7 +713,6 @@ DWORD *HMISong::SendCommand (DWORD *events, TrackInfo *track, DWORD delay)
 					events[0] = delay;
 					events[1] = 0;
 					events[2] = (MEVT_TEMPO << 24) | Tempo;
-					events += 3;
 					break;
 				}
 				track->TrackP += len;
@@ -720,6 +755,18 @@ DWORD *HMISong::SendCommand (DWORD *events, TrackInfo *track, DWORD delay)
 	{
 		track->Delay = ReadVarLen(track);
 	}
+	// Advance events pointer unless this is a non-delaying NOP.
+	if (events[0] != 0 || MEVT_EVENTTYPE(events[2]) != MEVT_NOP)
+	{
+		if (MEVT_EVENTTYPE(events[2]) == MEVT_LONGMSG)
+		{
+			events += 3 + ((MEVT_EVENTPARM(events[2]) + 3) >> 2);
+		}
+		else
+		{
+			events += 3;
+		}
+	}
 	return events;
 }
 

src/sound/music_smf_midiout.cpp

@@ -384,6 +384,11 @@ DWORD *MIDISong2::SendCommand (DWORD *events, TrackInfo *track, DWORD delay, ptr
 	event = track->TrackBegin[track->TrackP++];
 	CHECK_FINISHED
 
+	// The actual event type will be filled in below.
+	events[0] = delay;
+	events[1] = 0;
+	events[2] = MEVT_NOP << 24;
+
 	if (event != MIDI_SYSEX && event != MIDI_META && event != MIDI_SYSEXEND)
 	{
 		// Normal short message
@@ -582,17 +587,10 @@ DWORD *MIDISong2::SendCommand (DWORD *events, TrackInfo *track, DWORD delay, ptr
 				break;
 			}
 		}
-		events[0] = delay;
-		events[1] = 0;
 		if (event != MIDI_META && (!track->Designated || (track->Designation & DesignationMask)))
 		{
 			events[2] = event | (data1<<8) | (data2<<16);
 		}
-		else
-		{
-			events[2] = MEVT_NOP << 24;
-		}
-		events += 3;
 	}
 	else
 	{
@@ -612,8 +610,6 @@ DWORD *MIDISong2::SendCommand (DWORD *events, TrackInfo *track, DWORD delay, ptr
 			}
 			else
 			{
-				events[0] = delay;
-				events[1] = 0;
 				BYTE *msg = (BYTE *)&events[3];
 				if (event == MIDI_SYSEX)
 				{ // Need to add the SysEx marker to the message.
@@ -631,7 +627,6 @@ DWORD *MIDISong2::SendCommand (DWORD *events, TrackInfo *track, DWORD delay, ptr
 				{
 					*msg++ = 0;
 				}
-				events = (DWORD *)msg;
 				track->TrackP += len;
 			}
 		}
@@ -659,7 +654,6 @@ DWORD *MIDISong2::SendCommand (DWORD *events, TrackInfo *track, DWORD delay, ptr
 					events[0] = delay;
 					events[1] = 0;
 					events[2] = (MEVT_TEMPO << 24) | Tempo;
-					events += 3;
 					break;
 				}
 				track->TrackP += len;
@@ -678,6 +672,18 @@ DWORD *MIDISong2::SendCommand (DWORD *events, TrackInfo *track, DWORD delay, ptr
 	{
 		track->Delay = track->ReadVarLen();
 	}
+	// Advance events pointer unless this is a non-delaying NOP.
+	if (events[0] != 0 || MEVT_EVENTTYPE(events[2]) != MEVT_NOP)
+	{
+		if (MEVT_EVENTTYPE(events[2]) == MEVT_LONGMSG)
+		{
+			events += 3 + ((MEVT_EVENTPARM(events[2]) + 3) >> 2);
+		}
+		else
+		{
+			events += 3;
+		}
+	}
 	return events;
 }
 

src/sound/music_xmi_midiout.cpp

@@ -337,7 +337,12 @@ DWORD *XMISong::MakeEvents(DWORD *events, DWORD *max_event_p, DWORD max_time)
 			// Play all events for this tick.
 			do
 			{
-				DWORD *new_events = SendCommand(events, EventDue, time);
+				bool sysex_noroom = false;
+				DWORD *new_events = SendCommand(events, EventDue, time, max_event_p - events, sysex_noroom);
+				if (sysex_noroom)
+				{
+					return events;
+				}
 				EventDue = FindNextDue();
 				if (new_events != events)
 				{
@@ -382,7 +387,7 @@ void XMISong::AdvanceSong(DWORD time)
 //
 //==========================================================================
 
-DWORD *XMISong::SendCommand (DWORD *events, EventSource due, DWORD delay)
+DWORD *XMISong::SendCommand (DWORD *events, EventSource due, DWORD delay, ptrdiff_t room, bool &sysex_noroom)
 {
 	DWORD len;
 	BYTE event, data1 = 0, data2 = 0;
@@ -399,10 +404,20 @@ DWORD *XMISong::SendCommand (DWORD *events, EventSource due, DWORD delay)
 
 	TrackInfo *track = CurrSong;
 
+	sysex_noroom = false;
+	size_t start_p = track->EventP;
+
 	CHECK_FINISHED
 	event = track->EventChunk[track->EventP++];
 	CHECK_FINISHED
 
+	// The actual event type will be filled in below. If it's not a NOP,
+	// the events pointer will be advanced once the actual event is written.
+	// Otherwise, we do it at the end of the function.
+	events[0] = delay;
+	events[1] = 0;
+	events[2] = MEVT_NOP << 24;
+
 	if (event != MIDI_SYSEX && event != MIDI_META && event != MIDI_SYSEXEND)
 	{
 		// Normal short message
@@ -499,10 +514,6 @@ DWORD *XMISong::SendCommand (DWORD *events, EventSource due, DWORD delay)
 		{
 			events[2] = event | (data1<<8) | (data2<<16);
 		}
-		else
-		{
-			events[2] = MEVT_NOP << 24;
-		}
 		events += 3;
 
 
@@ -513,13 +524,41 @@ DWORD *XMISong::SendCommand (DWORD *events, EventSource due, DWORD delay)
 	}
 	else
 	{
-		// Skip SysEx events just because I don't want to bother with them.
-		// The old MIDI player ignored them too, so this won't break
-		// anything that played before.
+		// SysEx events could potentially not have enough room in the buffer...
 		if (event == MIDI_SYSEX || event == MIDI_SYSEXEND)
 		{
-			len = track->ReadVarLen ();
-			track->EventP += len;
+			len = track->ReadVarLen();
+			if (len >= (MAX_EVENTS-1)*3*4)
+			{ // This message will never fit. Throw it away.
+				track->EventP += len;
+			}
+			else if (len + 12 >= (size_t)room * 4)
+			{ // Not enough room left in this buffer. Backup and wait for the next one.
+				track->EventP = start_p;
+				sysex_noroom = true;
+				return events;
+			}
+			else
+			{
+				BYTE *msg = (BYTE *)&events[3];
+				if (event == MIDI_SYSEX)
+				{ // Need to add the SysEx marker to the message.
+					events[2] = (MEVT_LONGMSG << 24) | (len + 1);
+					*msg++ = MIDI_SYSEX;
+				}
+				else
+				{
+					events[2] = (MEVT_LONGMSG << 24) | len;
+				}
+				memcpy(msg, &track->EventChunk[track->EventP++], len);
+				msg += len;
+				// Must pad with 0
+				while ((size_t)msg & 3)
+				{
+					*msg++ = 0;
+				}
+				track->EventP += len;
+			}
 		}
 		else if (event == MIDI_META)
 		{
@@ -551,6 +590,18 @@ DWORD *XMISong::SendCommand (DWORD *events, EventSource due, DWORD delay)
 	{
 		track->Delay = track->ReadDelay();
 	}
+	// Advance events pointer unless this is a non-delaying NOP.
+	if (events[0] != 0 || MEVT_EVENTTYPE(events[2]) != MEVT_NOP)
+	{
+		if (MEVT_EVENTTYPE(events[2]) == MEVT_LONGMSG)
+		{
+			events += 3 + ((MEVT_EVENTPARM(events[2]) + 3) >> 2);
+		}
+		else
+		{
+			events += 3;
+		}
+	}
 	return events;
 }
 

src/thingdef/thingdef_expression.cpp

@@ -69,9 +69,9 @@ DEFINE_MEMBER_VARIABLE(special2, AActor)
 DEFINE_MEMBER_VARIABLE(tid, AActor)
 DEFINE_MEMBER_VARIABLE(TIDtoHate, AActor)
 DEFINE_MEMBER_VARIABLE(waterlevel, AActor)
-DEFINE_MEMBER_VARIABLE(x, AActor)
-DEFINE_MEMBER_VARIABLE(y, AActor)
-DEFINE_MEMBER_VARIABLE(z, AActor)
+DEFINE_MEMBER_VARIABLE_ALIAS(x, __pos.x, AActor)
+DEFINE_MEMBER_VARIABLE_ALIAS(y, __pos.y, AActor)
+DEFINE_MEMBER_VARIABLE_ALIAS(z, __pos.z, AActor)
 DEFINE_MEMBER_VARIABLE(velx, AActor)
 DEFINE_MEMBER_VARIABLE(vely, AActor)
 DEFINE_MEMBER_VARIABLE(velz, AActor)

src/wi_stuff.cpp

@@ -1228,7 +1228,7 @@ void WI_initDeathmatchStats (void)
 	acceleratestage = 0;
 	memset(playerready, 0, sizeof(playerready));
 	memset(cnt_frags, 0, sizeof(cnt_frags));
-	memset(cnt_deaths, 0, sizeof(cnt_frags));
+	memset(cnt_deaths, 0, sizeof(cnt_deaths));
 	memset(player_deaths, 0, sizeof(player_deaths));
 	total_frags = 0;
 	total_deaths = 0;

src/wi_stuff.h

@@ -33,7 +33,7 @@ class FTexture;
 struct wbplayerstruct_t
 {
 	bool		in;			// whether the player is in game
-	
+
 	// Player stats, kills, collected items etc.
 	int			skills;
 	int			sitems;
@@ -41,7 +41,6 @@ struct wbplayerstruct_t
 	int			stime;
 	int			frags[MAXPLAYERS];
 	int			fragcount;	// [RH] Cumulative frags for this player
-
 };
 
 struct wbstartstruct_t
@@ -54,7 +53,7 @@ struct wbstartstruct_t
 
 	FTexture	*LName0;
 	FTexture	*LName1;
-	
+
 	int			maxkills;
 	int			maxitems;
 	int			maxsecret;
@@ -63,19 +62,19 @@ struct wbstartstruct_t
 	// the par time and sucktime
 	int			partime;	// in tics
 	int			sucktime;	// in minutes
-	
+
 	// total time for the entire current game
 	int			totaltime;
 
 	// index of this player in game
-	int			pnum;	
+	int			pnum;
 
 	wbplayerstruct_t	plyr[MAXPLAYERS];
 };
 
 // Intermission stats.
 // Parameters for world map / intermission.
-extern wbstartstruct_t wminfo; 
+extern wbstartstruct_t wminfo;
 
 
 // Called by main loop, animate the intermission.

wadsrc/static/actors/constants.txt

@@ -208,6 +208,7 @@ enum
 	TF_USEACTORFOG =	0x00000100, // Use the actor's TeleFogSourceType and TeleFogDestType fogs.
 	TF_NOJUMP =			0x00000200, // Don't jump after teleporting.
 	TF_OVERRIDE =		0x00000400, // Ignore NOTELEPORT.
+	TF_SENSITIVEZ =		0x00000800, // Fail if the actor wouldn't fit in the position (for Z).
 
 	TF_KEEPORIENTATION = TF_KEEPVELOCITY|TF_KEEPANGLE,
 	TF_NOFOG = TF_NOSRCFOG|TF_NODESTFOG,