diff --git a/source/games/sw/src/game.h b/source/games/sw/src/game.h
index d1cbf32a4..5035c6695 100644
--- a/source/games/sw/src/game.h
+++ b/source/games/sw/src/game.h
@@ -939,7 +939,6 @@ struct USER
 	void set_int_change_z(int x) { change.Z = x * zinttoworld; }
 	void add_int_change_x(int x) { change.X += x * inttoworld; }
 	void add_int_change_y(int x) { change.Y += x * inttoworld; }
-	void add_int_change_z(int x) { change.Z += x * zinttoworld; }
 
 	// frequently repeated patterns
 	void addCounterToChange() { change.Z += Counter * zinttoworld; }
diff --git a/source/games/sw/src/jweapon.cpp b/source/games/sw/src/jweapon.cpp
index c3bdbcec9..ce658991a 100644
--- a/source/games/sw/src/jweapon.cpp
+++ b/source/games/sw/src/jweapon.cpp
@@ -1172,8 +1172,7 @@ int SpawnRadiationCloud(DSWActor* actor)
     if (actor->user.ID == MUSHROOM_CLOUD || actor->user.ID == 3121)
     {
         actorNew->user.Radius = 2000;
-        actorNew->user.set_int_change_x((MOVEx(actorNew->spr.xvel>>2, actorNew->int_ang())));
-        actorNew->user.set_int_change_y((MOVEy(actorNew->spr.xvel>>2, actorNew->int_ang())));
+        actorNew->user.change.XY() = MOVExy(actorNew->spr.xvel >> 2, actorNew->spr.angle);
         actorNew->spr.zvel = Z(1) + RANDOM_P2(Z(2));
     }
     else
diff --git a/source/games/sw/src/sector.cpp b/source/games/sw/src/sector.cpp
index 49969364c..b91aaedfe 100644
--- a/source/games/sw/src/sector.cpp
+++ b/source/games/sw/src/sector.cpp
@@ -856,8 +856,7 @@ void SectorExp(DSWActor* actor, sectortype* sectp, double zh)
 
     exp->spr.xrepeat += (RANDOM_P2(32<<8)>>8) - 16;
     exp->spr.yrepeat += (RANDOM_P2(32<<8)>>8) - 16;
-    exp->user.set_int_change_x(MOVEx(92, exp->int_ang()));
-    exp->user.set_int_change_y(MOVEy(92, exp->int_ang()));
+    exp->user.change.XY() = MOVExy(92, exp->spr.angle);
 }
 
 
diff --git a/source/games/sw/src/swactor.h b/source/games/sw/src/swactor.h
index 7e44b7522..d158443c9 100644
--- a/source/games/sw/src/swactor.h
+++ b/source/games/sw/src/swactor.h
@@ -38,8 +38,7 @@ public:
 
 inline void UpdateChangeXY(DSWActor* actor)
 {
-	actor->user.set_int_change_x(MOVEx(actor->spr.xvel, actor->int_ang()));
-	actor->user.set_int_change_y(MOVEy(actor->spr.xvel, actor->int_ang()));
+	actor->user.change.XY() = MOVExy(actor->spr.xvel, actor->spr.angle);
 }
 
 inline void UpdateChange(DSWActor* actor, double zfactor = 1.0)
diff --git a/source/games/sw/src/weapon.cpp b/source/games/sw/src/weapon.cpp
index 9f6eea75a..6018b4197 100644
--- a/source/games/sw/src/weapon.cpp
+++ b/source/games/sw/src/weapon.cpp
@@ -9891,8 +9891,7 @@ void SpawnNuclearSecondaryExp(DSWActor* actor, short ang)
 
     //ang = RANDOM_P2(2048);
     int32_t const vel = (2048+128) + RandomRange(2048);
-    expActor->user.set_int_change_x(MOVEx(vel, ang));
-    expActor->user.set_int_change_y(MOVEy(vel, ang));
+    expActor->user.change.XY() = MOVExy(vel, DAngle::fromBuild(ang));
     expActor->user.Radius = 200; // was NUKE_RADIUS
     expActor->user.coll = move_missile(expActor, DVector3(expActor->user.change.XY(), 0),
 									   expActor->user.ceiling_dist,expActor->user.floor_dist, CLIPMASK_MISSILE, MISSILEMOVETICS);
@@ -10152,8 +10151,7 @@ void SpawnGrenadeSecondaryExp(DSWActor* actor, int ang)
 
     //ang = RANDOM_P2(2048);
     vel = (1024+512) + RandomRange(1024);
-    expActor->user.set_int_change_x(MOVEx(vel, ang));
-    expActor->user.set_int_change_y(MOVEy(vel, ang));
+    expActor->user.change.XY() = MOVExy(vel, DAngle::fromBuild(ang));
 
     expActor->user.coll = move_missile(expActor, DVector3(expActor->user.change.XY(), 0),
                            expActor->user.ceiling_dist,expActor->user.floor_dist, CLIPMASK_MISSILE, MISSILEMOVETICS);