diff --git a/source/games/blood/src/view.cpp b/source/games/blood/src/view.cpp
index f507d7b45..3464a043f 100644
--- a/source/games/blood/src/view.cpp
+++ b/source/games/blood/src/view.cpp
@@ -558,7 +558,7 @@ void SetupView(int& cX, int& cY, int& cZ, binangle& cA, fixedhoriz& cH, sectorty
 		{
 			cZ += bobHeight;
 		}
-		cZ += xs_CRoundToInt(cH.asq16() / 6553.6);
+		cZ += int(cH.asq16() * (1. / 6553.6));
 		cameradist = -1;
 		cameraclock = PlayClock + MulScale(4, (int)gInterpolate, 16);
 	}
diff --git a/source/games/duke/src/gameexec.cpp b/source/games/duke/src/gameexec.cpp
index 9aadd6665..b141a2b00 100644
--- a/source/games/duke/src/gameexec.cpp
+++ b/source/games/duke/src/gameexec.cpp
@@ -928,15 +928,8 @@ void DoPlayer(bool bSet, int lVar1, int lLabelID, int lVar2, DDukeActor* sActor,
 		break;
 
 	case PLAYER_RETURN_TO_CENTER:
-		if (bSet)
-		{
-			ps[iPlayer].sync.actions |= SB_CENTERVIEW;
-		}
-		else
-		{
-			auto center = ps[iPlayer].sync.actions & SB_CENTERVIEW ? abs(xs_CRoundToInt(ps[iPlayer].horizon.horiz.asq16() * (9. / gi->playerHorizMax()))) : 0;
-			SetGameVarID(lVar2, center, sActor, sPlayer);
-		}
+		if (bSet) ps[iPlayer].sync.actions |= SB_CENTERVIEW;
+		else SetGameVarID(lVar2, ps[iPlayer].sync.actions & SB_CENTERVIEW ? abs(int(ps[iPlayer].horizon.horiz.asq16() * (9. / gi->playerHorizMax()))) : 0, sActor, sPlayer);
 		break;
 
 	default:
diff --git a/source/games/duke/src/hudweapon_d.cpp b/source/games/duke/src/hudweapon_d.cpp
index af90307c8..a772a9dc6 100644
--- a/source/games/duke/src/hudweapon_d.cpp
+++ b/source/games/duke/src/hudweapon_d.cpp
@@ -930,7 +930,7 @@ void displayweapon_d(int snum, double smoothratio)
 
 					hud_drawpal(weapon_xoffset + 184 - look_anghalf,
 						looking_arc + 240 - gun_pos, SHRINKER + 2,
-						16 - xs_CRoundToInt(bsinf(random_club_frame, -10)),
+						16 - int(bsinf(random_club_frame, -10)),
 						o, 0);
 
 					hud_drawpal(weapon_xoffset + 188 - look_anghalf,
@@ -1082,7 +1082,7 @@ void displayweapon_d(int snum, double smoothratio)
 				{
 					hud_drawpal(weapon_xoffset + 184 - look_anghalf,
 						looking_arc + 240 - gun_pos, SHRINKER + 2,
-						16 - xs_CRoundToInt(bsinf(random_club_frame, -10)),
+						16 - int(bsinf(random_club_frame, -10)),
 						o, 2);
 
 					hud_drawpal(weapon_xoffset + 188 - look_anghalf,
@@ -1092,7 +1092,7 @@ void displayweapon_d(int snum, double smoothratio)
 				{
 					hud_drawpal(weapon_xoffset + 184 - look_anghalf,
 						looking_arc + 240 - gun_pos, SHRINKER + 2,
-						16 - xs_CRoundToInt(bsinf(random_club_frame, -10)),
+						16 - int(bsinf(random_club_frame, -10)),
 						o, 0);
 
 					hud_drawpal(weapon_xoffset + 188 - look_anghalf,
diff --git a/source/games/duke/src/input.cpp b/source/games/duke/src/input.cpp
index bb70cf2cc..65e1fd3bb 100644
--- a/source/games/duke/src/input.cpp
+++ b/source/games/duke/src/input.cpp
@@ -760,7 +760,7 @@ static void processVehicleInput(player_struct *p, ControlInfo* const hidInput, I
 		input.avel = (float)boatApplyTurn(p, hidInput, kbdLeft, kbdRight, scaleAdjust);
 	}
 
-	loc.fvel = clamp<int16_t>(xs_CRoundToInt(p->MotoSpeed), -(MAXVELMOTO >> 3), MAXVELMOTO);
+	loc.fvel = clamp<int16_t>(p->MotoSpeed, -(MAXVELMOTO >> 3), MAXVELMOTO);
 	input.avel *= BAngToDegree;
 	loc.avel += input.avel;
 }
diff --git a/source/games/duke/src/player_r.cpp b/source/games/duke/src/player_r.cpp
index eafe624d9..a4a299053 100644
--- a/source/games/duke/src/player_r.cpp
+++ b/source/games/duke/src/player_r.cpp
@@ -2132,7 +2132,7 @@ static void movement(int snum, ESyncBits actions, sectortype* psect, int fz, int
 				{
 					p->VBumpTarget = 80;
 					p->moto_bump_fast = 1;
-					p->vel.Z -= xs_CRoundToInt(gs.gravity * (p->MotoSpeed / 16.));
+					p->vel.Z -= int(gs.gravity * p->MotoSpeed * (1. / 16.));
 					p->MotoOnGround = 0;
 					if (S_CheckActorSoundPlaying(pact, 188))
 						S_StopSound(188, pact);
@@ -2374,39 +2374,39 @@ void onMotorcycleMove(int snum, walltype* wal)
 	auto p = &ps[snum];
 	auto pact = p->GetActor();
 	int angleDelta = abs(p->angle.ang.asbuild() - getangle(wal->delta()));
-	int damageAmount;
+	double damageAmount = p->MotoSpeed * p->MotoSpeed;
 
 	p->angle.addadjustment(buildfang(p->MotoSpeed / (krand() & 1 ? -2 : 2)));
 
 	if (angleDelta >= 441 && angleDelta <= 581)
 	{
-		damageAmount = xs_CRoundToInt((p->MotoSpeed * p->MotoSpeed) / 256.);
+		damageAmount *= (1. / 256.);
 		p->MotoSpeed = 0;
 		if (S_CheckActorSoundPlaying(pact, 238) == 0)
 			S_PlayActorSound(238, pact);
 	}
 	else if (angleDelta >= 311 && angleDelta <= 711)
 	{
-		damageAmount = xs_CRoundToInt((p->MotoSpeed * p->MotoSpeed) / 2048.);
+		damageAmount *= (1. / 2048.);
 		p->MotoSpeed -= (p->MotoSpeed / 2.) + (p->MotoSpeed / 4.);
 		if (S_CheckActorSoundPlaying(pact, 238) == 0)
 			S_PlayActorSound(238, pact);
 	}
 	else if (angleDelta >= 111 && angleDelta <= 911)
 	{
-		damageAmount = xs_CRoundToInt((p->MotoSpeed * p->MotoSpeed) / 16384.);
+		damageAmount *= (1. / 16384.);
 		p->MotoSpeed -= p->MotoSpeed / 2.;
 		if (S_CheckActorSoundPlaying(pact, 239) == 0)
 			S_PlayActorSound(239, pact);
 	}
 	else
 	{
-		damageAmount = xs_CRoundToInt((p->MotoSpeed * p->MotoSpeed) / 32768.);
+		damageAmount *= (1. / 32768.);
 		p->MotoSpeed -= p->MotoSpeed / 8.;
 		if (S_CheckActorSoundPlaying(pact, 240) == 0)
 			S_PlayActorSound(240, pact);
 	}
-	pact->spr.extra -= damageAmount;
+	pact->spr.extra -= int(damageAmount);
 	if (pact->spr.extra <= 0)
 	{
 		S_PlayActorSound(SQUISHED, pact);
@@ -2482,7 +2482,7 @@ void onMotorcycleHit(int snum, DDukeActor* victim)
 		else
 			victim->SetHitOwner(p->GetActor());
 		victim->attackertype = MOTOHIT;
-		victim->hitextra = xs_CRoundToInt(p->MotoSpeed / 2.);
+		victim->hitextra = int(p->MotoSpeed * 0.5);
 		p->MotoSpeed -= p->MotoSpeed / 4.;
 		p->TurbCount = 6;
 	}
@@ -2542,7 +2542,7 @@ void onBoatHit(int snum, DDukeActor* victim)
 		else
 			victim->SetHitOwner(p->GetActor());
 		victim->attackertype = MOTOHIT;
-		victim->hitextra = xs_CRoundToInt(p->MotoSpeed / 4.);
+		victim->hitextra = int(p->MotoSpeed * 0.25);
 		p->MotoSpeed -= p->MotoSpeed / 4.;
 		p->TurbCount = 6;
 	}
@@ -3455,6 +3455,16 @@ void processinput_r(int snum)
 
 	if (clz.type == kHitSprite)
 	{
+		auto doVehicleHit = [&]()
+		{
+			if (badguy(clz.actor()))
+			{
+				clz.actor()->attackertype = MOTOHIT;
+				clz.actor()->hitextra = int(2 + (p->MotoSpeed * 0.5));
+				p->MotoSpeed -= p->MotoSpeed * (1. / 16.);
+			}
+		};
+
 		if ((clz.actor()->spr.cstat & (CSTAT_SPRITE_ALIGNMENT_FLOOR| CSTAT_SPRITE_BLOCK)) == (CSTAT_SPRITE_ALIGNMENT_FLOOR | CSTAT_SPRITE_BLOCK))
 		{
 			psectlotag = 0;
@@ -3462,20 +3472,10 @@ void processinput_r(int snum)
 			p->spritebridge = 1;
 		}
 		if (p->OnMotorcycle)
-			if (badguy(clz.actor()))
-			{
-				clz.actor()->attackertype = MOTOHIT;
-				clz.actor()->hitextra = xs_CRoundToInt(2 + (p->MotoSpeed / 2.));
-				p->MotoSpeed -= p->MotoSpeed / 16.;
-			}
+			doVehicleHit();
 		if (p->OnBoat)
 		{
-			if (badguy(clz.actor()))
-			{
-				clz.actor()->attackertype = MOTOHIT;
-				clz.actor()->hitextra = xs_CRoundToInt(2 + (p->MotoSpeed / 2.));
-				p->MotoSpeed -= p->MotoSpeed / 16.;
-			}
+			doVehicleHit();
 		}
 		else if (badguy(clz.actor()) && clz.actor()->spr.xrepeat > 24 && abs(pact->spr.pos.Z - clz.actor()->spr.pos.Z) < (84 << 8))
 		{
diff --git a/source/games/sw/src/jweapon.cpp b/source/games/sw/src/jweapon.cpp
index f73700e34..40f374691 100644
--- a/source/games/sw/src/jweapon.cpp
+++ b/source/games/sw/src/jweapon.cpp
@@ -2189,7 +2189,7 @@ int SpawnShell(DSWActor* actor, int ShellNum)
 
     if (actor->user.PlayerP)
     {
-        actorNew->spr.pos.Z += xs_CRoundToInt(-MulScaleF(actor->user.PlayerP->horizon.horiz.asq16(), HORIZ_MULT / 3., 16));
+        actorNew->spr.pos.Z += int(-actor->user.PlayerP->horizon.horiz.asbuildf() * HORIZ_MULT * (1. / 3.));
     }
 
     switch (actorNew->user.ID)
diff --git a/source/games/sw/src/weapon.cpp b/source/games/sw/src/weapon.cpp
index e7e720005..2729338f8 100644
--- a/source/games/sw/src/weapon.cpp
+++ b/source/games/sw/src/weapon.cpp
@@ -14922,7 +14922,7 @@ int InitTracerUzi(PLAYER* pp)
         return 0;
     }
 
-    actorNew->spr.zvel = xs_CRoundToInt(-MulScaleF(pp->horizon.horiz.asq16(), actorNew->spr.xvel / 8., 16));
+    actorNew->spr.zvel = int(-pp->horizon.horiz.asbuildf() * actorNew->spr.xvel * (1. / 8.));
 
     plActor->spr.clipdist = oclipdist;
 
@@ -14971,7 +14971,7 @@ int InitTracerTurret(DSWActor* actor, DSWActor* Operator, fixed_t q16horiz)
     actorNew->spr.cstat |= (CSTAT_SPRITE_YCENTER);
     actorNew->spr.cstat |= (CSTAT_SPRITE_INVISIBLE);
 
-    actorNew->spr.zvel = xs_CRoundToInt(-MulScaleF(q16horiz, actorNew->spr.xvel / 8., 16));
+    actorNew->spr.zvel = int(-MulScaleF(q16horiz, actorNew->spr.xvel * (1. / 8.), 16));
 
     WeaponAutoAim(actor, actorNew, 32, false);
 
@@ -15392,7 +15392,7 @@ int InitTankShell(DSWActor* actor, PLAYER* pp)
     actorNew->spr.cstat |= (CSTAT_SPRITE_YCENTER);
     actorNew->spr.cstat |= (CSTAT_SPRITE_INVISIBLE);
 
-    actorNew->spr.zvel = xs_CRoundToInt(-MulScaleF(pp->horizon.horiz.asq16(), actorNew->spr.xvel / 8., 16));
+    actorNew->spr.zvel = int(-pp->horizon.horiz.asbuildf() * actorNew->spr.xvel * (1. / 8.));
 
     WeaponAutoAim(actor, actorNew, 64, false);
     // a bit of randomness
@@ -15530,7 +15530,7 @@ int InitTurretRocket(DSWActor* actor, PLAYER* pp)
     actorNew->user.Flags2 |= (SPR2_SO_MISSILE);
     actorNew->spr.cstat |= (CSTAT_SPRITE_YCENTER);
 
-    actorNew->spr.zvel = xs_CRoundToInt(-MulScaleF(pp->horizon.horiz.asq16(), actorNew->spr.xvel / 8., 16));
+    actorNew->spr.zvel = int(-pp->horizon.horiz.asbuildf() * actorNew->spr.xvel * (1. / 8.));
 
     WeaponAutoAim(actor, actorNew, 64, false);
     // a bit of randomness
@@ -15567,7 +15567,7 @@ int InitTurretFireball(DSWActor* actor, PLAYER* pp)
     actorNew->user.Flags2 |= (SPR2_SO_MISSILE);
     actorNew->spr.cstat |= (CSTAT_SPRITE_YCENTER);
 
-    actorNew->spr.zvel = xs_CRoundToInt(-MulScaleF(pp->horizon.horiz.asq16(), actorNew->spr.xvel / 8., 16));
+    actorNew->spr.zvel = int(-pp->horizon.horiz.asbuildf() * actorNew->spr.xvel * (1. / 8.));
 
     WeaponAutoAim(actor, actorNew, 64, false);
     // a bit of randomness