diff --git a/source/games/duke/src/actors_d.cpp b/source/games/duke/src/actors_d.cpp
index 154c05bcc..1a970cf11 100644
--- a/source/games/duke/src/actors_d.cpp
+++ b/source/games/duke/src/actors_d.cpp
@@ -290,11 +290,11 @@ void hitradius_d(DDukeActor* actor, int  r, int  hp1, int  hp2, int  hp3, int  h
 					{
 						search.Add(wal.nextSector());
 					}
-					int x1 = (((wal.wall_int_pos().X + wal.point2Wall()->wall_int_pos().X) >> 1) + actor->int_pos().X) >> 1;
-					int y1 = (((wal.wall_int_pos().Y + wal.point2Wall()->wall_int_pos().Y) >> 1) + actor->int_pos().Y) >> 1;
+					DVector3 w1(((wal.pos + wal.point2Wall()->pos) * 0.5 + actor->spr.pos) * 0.5, actor->spr.pos.Z); // half way between the actor and the wall's center.
 					sectortype* sect = wal.sectorp();
-					updatesector(x1, y1, &sect);
-					if (sect && cansee(x1, y1, actor->int_pos().Z, sect, actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z, actor->sector()))
+					updatesector(w1, &sect);
+
+					if (sect && cansee(w1, sect, actor->spr.pos, actor->sector()))
 						fi.checkhitwall(actor, &wal, wal.wall_int_pos().X, wal.wall_int_pos().Y, actor->int_pos().Z, actor->spr.picnum);
 				}
 			}
@@ -327,7 +327,7 @@ void hitradius_d(DDukeActor* actor, int  r, int  hp1, int  hp2, int  hp3, int  h
 				if (actor->spr.picnum != SHRINKSPARK || (act2->spr.cstat & CSTAT_SPRITE_BLOCK_ALL))
 					if (dist(actor, act2) < r)
 					{
-						if (badguy(act2) && !cansee(act2->int_pos().X, act2->int_pos().Y, act2->int_pos().Z + q, act2->sector(), actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z + q, actor->sector()))
+						if (badguy(act2) && !cansee(act2->spr.pos.plusZ(q * maptoworld), act2->sector(), actor->spr.pos.plusZ(q * maptoworld), actor->sector()))
 							continue;
 						fi.checkhitsprite(act2, actor);
 					}
@@ -347,7 +347,7 @@ void hitradius_d(DDukeActor* actor, int  r, int  hp1, int  hp2, int  hp3, int  h
 				int d = dist(actor, act2);
 				if (act2->spr.picnum == APLAYER) act2->spr.pos.Z += gs.playerheight;
 
-				if (d < r && cansee(act2->int_pos().X, act2->int_pos().Y, act2->int_pos().Z - (8 << 8), act2->sector(), actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z - (12 << 8), actor->sector()))
+				if (d < r && cansee(act2->spr.pos.plusZ(-8), act2->sector(), actor->spr.pos.plusZ(-12), actor->sector()))
 				{
 					act2->hitang = getangle(act2->int_pos().X - actor->int_pos().X, act2->int_pos().Y - actor->int_pos().Y);
 
diff --git a/source/games/duke/src/actors_r.cpp b/source/games/duke/src/actors_r.cpp
index 6acfb0cc5..d99c4445e 100644
--- a/source/games/duke/src/actors_r.cpp
+++ b/source/games/duke/src/actors_r.cpp
@@ -248,18 +248,18 @@ void hitradius_r(DDukeActor* actor, int  r, int  hp1, int  hp2, int  hp3, int  h
 					{
 						search.Add(wal.nextSector());
 					}
-					int x1 = (((wal.wall_int_pos().X + wal.point2Wall()->wall_int_pos().X) >> 1) + actor->int_pos().X) >> 1;
-					int y1 = (((wal.wall_int_pos().Y + wal.point2Wall()->wall_int_pos().Y) >> 1) + actor->int_pos().Y) >> 1;
-					auto sect = wal.sectorp();
-					updatesector(x1, y1, &sect);
-					if (sect != nullptr && cansee(x1, y1, actor->int_pos().Z, sect, actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z, actor->sector()))
+					DVector3 w1(((wal.pos + wal.point2Wall()->pos) * 0.5 + actor->spr.pos) * 0.5, actor->spr.pos.Z); // half way between the actor and the wall's center.
+					sectortype* sect = wal.sectorp();
+					updatesector(w1, &sect);
+
+					if (sect && cansee(w1, sect, actor->spr.pos, actor->sector()))
 						fi.checkhitwall(actor, &wal, wal.wall_int_pos().X, wal.wall_int_pos().Y, actor->int_pos().Z, actor->spr.picnum);
 				}
 			}
 		}
 	}
 
-	int q = -(24 << 8) + (krand() & ((32 << 8) - 1));
+	double q = zrand(32) - 24;
 
 	auto Owner = actor->GetOwner();
 	for (int x = 0; x < 7; x++)
@@ -272,10 +272,9 @@ void hitradius_r(DDukeActor* actor, int  r, int  hp1, int  hp2, int  hp3, int  h
 				if (act2->spr.cstat & CSTAT_SPRITE_BLOCK_ALL)
 					if (dist(actor, act2) < r)
 					{
-						if (badguy(act2) && !cansee(act2->int_pos().X, act2->int_pos().Y, act2->int_pos().Z + q, act2->sector(), actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z + q, actor->sector()))
-						{
+						if (badguy(act2) && !cansee(act2->spr.pos.plusZ(q), act2->sector(), actor->spr.pos.plusZ(q), actor->sector()))
 							continue;
-						}
+
 						fi.checkhitsprite(act2, actor);
 					}
 			}
@@ -294,7 +293,7 @@ void hitradius_r(DDukeActor* actor, int  r, int  hp1, int  hp2, int  hp3, int  h
 				int d = dist(actor, act2);
 				if (act2->spr.picnum == APLAYER) act2->spr.pos.Z += gs.playerheight;
 
-				if (d < r && cansee(act2->int_pos().X, act2->int_pos().Y, act2->int_pos().Z - (8 << 8), act2->sector(), actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z - (12 << 8), actor->sector()))
+				if (d < r && cansee(act2->spr.pos.plusZ(-8), act2->sector(), actor->spr.pos.plusZ(-12), actor->sector()))
 				{
 					if ((isRRRA()) && act2->spr.picnum == MINION && act2->spr.pal == 19)
 					{
diff --git a/source/games/duke/src/funct.h b/source/games/duke/src/funct.h
index abf1c48e3..ec4d3616a 100644
--- a/source/games/duke/src/funct.h
+++ b/source/games/duke/src/funct.h
@@ -245,6 +245,13 @@ void loadcons();
 void recordoldspritepos();
 void DrawStatusBar();
 
+[[deprecated]]
+inline double zrand(int spread, int ofs)
+{
+	int r = krand() % (spread << 8);
+	return r * zmaptoworld;
+}
+
 inline double zrand(int spread)
 {
 	int r = krand() % (spread << 8);
diff --git a/source/games/duke/src/gameexec.cpp b/source/games/duke/src/gameexec.cpp
index 14f78d81c..53788facd 100644
--- a/source/games/duke/src/gameexec.cpp
+++ b/source/games/duke/src/gameexec.cpp
@@ -1459,7 +1459,7 @@ static bool ifcansee(DDukeActor* actor, int pnum)
 	if (ps[pnum].holoduke_on != nullptr && !isRR())
 	{
 		tosee = ps[pnum].holoduke_on;
-		j = cansee(actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z - (krand() & ((32 << 8) - 1)), actor->sector(), tosee->int_pos().X, tosee->int_pos().Y, tosee->int_pos().Z, tosee->sector());
+		j = cansee(actor->spr.pos.plusZ(-zrand(32)), actor->sector(), tosee->spr.pos, tosee->sector());
 
 		if (j == 0)
 		{
@@ -1471,7 +1471,7 @@ static bool ifcansee(DDukeActor* actor, int pnum)
 	else tosee = ps[pnum].GetActor();	// holoduke not on. look for player
 
 	// can they see player, (or player's holoduke)
-	j = cansee(actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z - (krand() & ((47 << 8))), actor->sector(), tosee->int_pos().X, tosee->int_pos().Y, tosee->int_pos().Z - ((isRR()? 28 : 24) << 8), tosee->sector());
+	j = cansee(actor->spr.pos.plusZ(-zrand(48)), actor->sector(), tosee->spr.pos.plusZ(isRR()? -28 : -24), tosee->sector());
 
 	if (j == 0)
 	{
diff --git a/source/games/duke/src/player.cpp b/source/games/duke/src/player.cpp
index 33eae84bc..392c75265 100644
--- a/source/games/duke/src/player.cpp
+++ b/source/games/duke/src/player.cpp
@@ -352,7 +352,7 @@ DDukeActor* aim(DDukeActor* actor, int aang)
 									a = (abs(Scale(act->int_pos().Z - actor->int_pos().Z, 10, sdist) - ps[actor->spr.yvel].horizon.sum().asbuild()) < 100);
 								else a = 1;
 
-								cans = cansee(act->int_pos().X, act->int_pos().Y, act->int_pos().Z - (32 << 8) + gs.actorinfo[act->spr.picnum].aimoffset, act->sector(), actor->int_pos().X, actor->int_pos().Y, actor->int_pos().Z - (32 << 8), actor->sector());
+								cans = cansee(act->spr.pos.plusZ(-32 + gs.actorinfo[act->spr.picnum].aimoffset), act->sector(), actor->spr.pos.plusZ(-32), actor->sector());
 
 								if (a && cans)
 								{