diff --git a/src/cavegen.cpp b/src/cavegen.cpp
index 1beac6f27..5728c1337 100644
--- a/src/cavegen.cpp
+++ b/src/cavegen.cpp
@@ -133,11 +133,9 @@ void CavesRandomWalk::makeCave(MMVManip *vm, v3s16 nmin, v3s16 nmax,
 	route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y - 1);
 
 	// Randomize starting position
-	orp = v3f(
-		(float)(ps->next() % ar.X) + 0.5,
-		(float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5,
-		(float)(ps->next() % ar.Z) + 0.5
-	);
+	orp.Z = (float)(ps->next() % ar.Z) + 0.5;
+	orp.Y = (float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5;
+	orp.X = (float)(ps->next() % ar.X) + 0.5;
 
 	// Add generation notify begin event
 	if (gennotify) {
@@ -164,11 +162,10 @@ void CavesRandomWalk::makeCave(MMVManip *vm, v3s16 nmin, v3s16 nmax,
 void CavesRandomWalk::makeTunnel(bool dirswitch)
 {
 	if (dirswitch && !large_cave) {
-		main_direction = v3f(
-			((float)(ps->next() % 20) - (float)10) / 10,
-			((float)(ps->next() % 20) - (float)10) / 30,
-			((float)(ps->next() % 20) - (float)10) / 10
-		);
+		main_direction.Z = ((float)(ps->next() % 20) - (float)10) / 10;
+		main_direction.Y = ((float)(ps->next() % 20) - (float)10) / 30;
+		main_direction.X = ((float)(ps->next() % 20) - (float)10) / 10;
+
 		main_direction *= (float)ps->range(0, 10) / 10;
 	}
 
@@ -196,17 +193,13 @@ void CavesRandomWalk::makeTunnel(bool dirswitch)
 	v3f vec;
 	// Jump downward sometimes
 	if (!large_cave && ps->range(0, 12) == 0) {
-		vec = v3f(
-			(float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2,
-			(float)(ps->next() % (maxlen.Y * 2)) - (float)maxlen.Y,
-			(float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2
-		);
+		vec.Z = (float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2;
+		vec.Y = (float)(ps->next() % (maxlen.Y * 2)) - (float)maxlen.Y;
+		vec.X = (float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2;
 	} else {
-		vec = v3f(
-			(float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2,
-			(float)(ps->next() % (maxlen.Y * 1)) - (float)maxlen.Y / 2,
-			(float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2
-		);
+		vec.Z = (float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2;
+		vec.Y = (float)(ps->next() % (maxlen.Y * 1)) - (float)maxlen.Y / 2;
+		vec.X = (float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2;
 	}
 
 	// Do not make caves that are above ground.
@@ -446,11 +439,9 @@ void CavesV6::makeCave(MMVManip *vm, v3s16 nmin, v3s16 nmax,
 	route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y - 1);
 
 	// Randomize starting position
-	orp = v3f(
-		(float)(ps->next() % ar.X) + 0.5,
-		(float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5,
-		(float)(ps->next() % ar.Z) + 0.5
-	);
+	orp.Z = (float)(ps->next() % ar.Z) + 0.5;
+	orp.Y = (float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5;
+	orp.X = (float)(ps->next() % ar.X) + 0.5;
 
 	// Add generation notify begin event
 	if (gennotify != NULL) {
@@ -477,11 +468,10 @@ void CavesV6::makeCave(MMVManip *vm, v3s16 nmin, v3s16 nmax,
 void CavesV6::makeTunnel(bool dirswitch)
 {
 	if (dirswitch && !large_cave) {
-		main_direction = v3f(
-			((float)(ps->next() % 20) - (float)10) / 10,
-			((float)(ps->next() % 20) - (float)10) / 30,
-			((float)(ps->next() % 20) - (float)10) / 10
-		);
+		main_direction.Z = ((float)(ps->next() % 20) - (float)10) / 10;
+		main_direction.Y = ((float)(ps->next() % 20) - (float)10) / 30;
+		main_direction.X = ((float)(ps->next() % 20) - (float)10) / 10;
+
 		main_direction *= (float)ps->range(0, 10) / 10;
 	}
 
@@ -506,19 +496,16 @@ void CavesV6::makeTunnel(bool dirswitch)
 		);
 	}
 
-	v3f vec(
-		(float)(ps->next() % maxlen.X) - (float)maxlen.X / 2,
-		(float)(ps->next() % maxlen.Y) - (float)maxlen.Y / 2,
-		(float)(ps->next() % maxlen.Z) - (float)maxlen.Z / 2
-	);
+	v3f vec;
+	vec.Z = (float)(ps->next() % maxlen.Z) - (float)maxlen.Z / 2;
+	vec.Y = (float)(ps->next() % maxlen.Y) - (float)maxlen.Y / 2;
+	vec.X = (float)(ps->next() % maxlen.X) - (float)maxlen.X / 2;
 
 	// Jump downward sometimes
 	if (!large_cave && ps->range(0, 12) == 0) {
-		vec = v3f(
-			(float)(ps->next() % maxlen.X) - (float)maxlen.X / 2,
-			(float)(ps->next() % (maxlen.Y * 2)) - (float)maxlen.Y,
-			(float)(ps->next() % maxlen.Z) - (float)maxlen.Z / 2
-		);
+		vec.Z = (float)(ps->next() % maxlen.Z) - (float)maxlen.Z / 2;
+		vec.Y = (float)(ps->next() % (maxlen.Y * 2)) - (float)maxlen.Y;
+		vec.X = (float)(ps->next() % maxlen.X) - (float)maxlen.X / 2;
 	}
 
 	// Do not make caves that are entirely above ground, to fix shadow bugs
diff --git a/src/dungeongen.cpp b/src/dungeongen.cpp
index 5bfc320c9..f7f9b8b50 100644
--- a/src/dungeongen.cpp
+++ b/src/dungeongen.cpp
@@ -135,17 +135,23 @@ void DungeonGen::makeDungeon(v3s16 start_padding)
 	bool fits = false;
 	for (u32 i = 0; i < 100 && !fits; i++) {
 		bool is_large_room = ((random.next() & 3) == 1);
-		roomsize = is_large_room ?
-			v3s16(random.range(8, 16), random.range(8, 16), random.range(8, 16)) :
-			v3s16(random.range(4, 8), random.range(4, 6), random.range(4, 8));
+		if (is_large_room) {
+			roomsize.Z = random.range(8, 16);
+			roomsize.Y = random.range(8, 16);
+			roomsize.X = random.range(8, 16);
+		} else {
+			roomsize.Z = random.range(4, 8);
+			roomsize.Y = random.range(4, 6);
+			roomsize.X = random.range(4, 8);
+		}
 		roomsize += dp.roomsize;
 
 		// start_padding is used to disallow starting the generation of
 		// a dungeon in a neighboring generation chunk
-		roomplace = vm->m_area.MinEdge + start_padding + v3s16(
-			random.range(0, areasize.X - roomsize.X - start_padding.X),
-			random.range(0, areasize.Y - roomsize.Y - start_padding.Y),
-			random.range(0, areasize.Z - roomsize.Z - start_padding.Z));
+		roomplace = vm->m_area.MinEdge + start_padding;
+		roomplace.Z += random.range(0, areasize.Z - roomsize.Z - start_padding.Z);
+		roomplace.Y += random.range(0, areasize.Y - roomsize.Y - start_padding.Y);
+		roomplace.X += random.range(0, areasize.X - roomsize.X - start_padding.X);
 
 		/*
 			Check that we're not putting the room to an unknown place,
@@ -227,7 +233,9 @@ void DungeonGen::makeDungeon(v3s16 start_padding)
 		makeCorridor(doorplace, doordir, corridor_end, corridor_end_dir);
 
 		// Find a place for a random sized room
-		roomsize = v3s16(random.range(4, 8), random.range(4, 6), random.range(4, 8));
+		roomsize.Z = random.range(4, 8);
+		roomsize.Y = random.range(4, 6);
+		roomsize.X = random.range(4, 8);
 		roomsize += dp.roomsize;
 
 		m_pos = corridor_end;
@@ -587,7 +595,10 @@ v3s16 rand_ortho_dir(PseudoRandom &random, bool diagonal_dirs)
 
 		do {
 			trycount++;
-			dir = v3s16(random.next() % 3 - 1, 0, random.next() % 3 - 1);
+
+			dir.Z = random.next() % 3 - 1;
+			dir.Y = 0;
+			dir.X = random.next() % 3 - 1;
 		} while ((dir.X == 0 && dir.Z == 0) && trycount < 10);
 
 		return dir;