- ensure player's angle input while playing with cl_syncinput 0 is scaled appropriately when sector's lotag is ST_2_UNDERWATER.

source/games/duke/src/player.cpp

@@ -789,6 +789,7 @@ void apply_seasick(player_struct* p, double factor)
 void applylook(int snum, double factor, fixed_t adjustment)
 {
 	auto p = &ps[snum];
+	fixed_t q16avel;
 
 	if (p->dead_flag == 0)
 	{
@@ -831,7 +832,17 @@ void applylook(int snum, double factor, fixed_t adjustment)
 		p->q16ang += fix16_from_dbl(factor * p->angAdjust);
 	}
 
-	p->q16ang = (p->q16ang + adjustment) & 0x7FFFFFF;
+	// Taken from processinput() for use with applying look while cl_syncinput is 0.
+	if (p->psectlotag == ST_2_UNDERWATER)
+	{
+		q16avel = (adjustment - (adjustment >> 3)) * sgn(TICSPERFRAME);
+	}
+	else
+	{
+		q16avel = adjustment * sgn(TICSPERFRAME);
+	}
+
+	p->q16ang = (p->q16ang + q16avel) & 0x7FFFFFF;
 }
 
 //---------------------------------------------------------------------------

source/games/duke/src/player_d.cpp

@@ -2757,6 +2757,8 @@ void processinput_d(int snum)
 		movement(snum, sb_snum, psect, fz, cz, shrunk, truefdist);
 	}
 
+	p->psectlotag = psectlotag;
+
 	//Do the quick lefts and rights
 
 	if (movementBlocked(snum))
@@ -2771,16 +2773,7 @@ void processinput_d(int snum)
 		//ENGINE calculates angvel for you
 		// may still be needed later for demo recording
 
-		if (psectlotag == ST_2_UNDERWATER)
-		{
-			p->q16angvel = (sb_avel - (sb_avel >> 3)) * sgn(doubvel);
-		}
-		else
-		{
-			p->q16angvel = sb_avel * sgn(doubvel);
-		}
-
-		applylook(snum, 1, p->q16angvel);
+		applylook(snum, 1, sb_avel);
 
 		p->crack_time = 777;
 	}

source/games/duke/src/player_r.cpp

@@ -3680,6 +3680,8 @@ void processinput_r(int snum)
 		movement(snum, sb_snum, psect, fz, cz, shrunk, truefdist);
 	}
 
+	p->psectlotag = psectlotag;
+
 	//Do the quick lefts and rights
 
 	if (movementBlocked(snum))
@@ -3694,16 +3696,7 @@ void processinput_r(int snum)
 		//ENGINE calculates angvel for you
 		// may still be needed later for demo recording
 
-		if (psectlotag == ST_2_UNDERWATER)
-		{
-			p->q16angvel = (sb_avel - (sb_avel >> 3)) * sgn(doubvel);
-		}
-		else
-		{
-			p->q16angvel = sb_avel * sgn(doubvel);
-		}
-
-		applylook(snum, 1, p->q16angvel);
+		applylook(snum, 1, sb_avel);
 
 		p->crack_time = 777;
 	}

source/games/duke/src/premap.cpp

@@ -95,7 +95,7 @@ void resetplayerstats(int snum)
     p->pyoff            = 0;
     p->opyoff           = 0;
     p->loogcnt          = 0;
-    p->q16angvel        = 0;
+    p->psectlotag       = 0;
     p->weapon_sway      = 0;
 //    p->select_dir       = 0;
     p->extra_extra8     = 0;

source/games/duke/src/savegame.cpp

@@ -149,7 +149,7 @@ FSerializer& Serialize(FSerializer& arc, const char* keyname, player_struct& w,
 			("crack_time", w.crack_time)
 			("aim.mode", w.aim_mode)
 			("auto_aim", w.auto_aim)
-			("q16angvel", w.q16angvel)
+			("psectlotag", w.psectlotag)
 			("cursectnum", w.cursectnum)
 			("last_extra", w.last_extra)
 			("subweapon", w.subweapon)

source/games/duke/src/types.h

@@ -102,7 +102,7 @@ struct player_struct
 	};
 
 	// input handles angle and horizon as fixed16 numbers. We need to account for that as well.
-	fixed_t q16ang, q16horiz, q16horizoff, q16rotscrnang, q16look_ang, q16angvel;
+	fixed_t q16ang, q16horiz, q16horizoff, q16rotscrnang, q16look_ang;
 	fixed_t oq16ang, oq16horiz, oq16horizoff, oq16rotscrnang, oq16look_ang; // These are only needed with synchronous mouse input.
 	fixed_t one_eighty_count;
 
@@ -124,6 +124,8 @@ struct player_struct
 	unsigned char hard_landing;
 	unsigned char ohard_landing;
 
+	// Store current psectlotag as determined in processinput() for use with scaling angle aiming.
+	short psectlotag;
 
 	// From here on it is unaltered from JFDuke with the exception of a few fields that are no longer needed and were removed.
 	int zoom, exitx, exity, loogiex[64], loogiey[64], numloogs, loogcnt;