From 7e6bc9724053dc3af859d0fc02893a8ec5eb6b91 Mon Sep 17 00:00:00 2001
From: Jaime Ita Passos <jp6781615@gmail.com>
Date: Tue, 30 Mar 2021 22:52:50 -0300
Subject: [PATCH] Smoother freelook in Software Mhm hmm...

---
 src/r_main.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/src/r_main.c b/src/r_main.c
index f82fb589e..04bdebc58 100644
--- a/src/r_main.c
+++ b/src/r_main.c
@@ -1089,8 +1089,6 @@ subsector_t *R_PointInSubsectorOrNull(fixed_t x, fixed_t y)
 // 18/08/18: (No it's actually 16*viewheight, thanks Jimita for finding this out)
 static void R_SetupFreelook(player_t *player, boolean skybox)
 {
-	INT32 dy = 0;
-
 #ifndef HWRENDER
 	(void)player;
 	(void)skybox;
@@ -1109,14 +1107,15 @@ static void R_SetupFreelook(player_t *player, boolean skybox)
 		G_SoftwareClipAimingPitch((INT32 *)&aimingangle);
 	}
 
-	if (rendermode == render_soft)
-	{
-		dy = (AIMINGTODY(aimingangle)>>FRACBITS) * viewwidth/BASEVIDWIDTH;
-		yslope = &yslopetab[viewheight*8 - (viewheight/2 + dy)];
-	}
+	centeryfrac = (viewheight/2)<<FRACBITS;
 
-	centery = (viewheight/2) + dy;
-	centeryfrac = centery<<FRACBITS;
+	if (rendermode == render_soft)
+		centeryfrac += FixedMul(AIMINGTODY(aimingangle), FixedDiv(viewwidth<<FRACBITS, BASEVIDWIDTH<<FRACBITS));
+
+	centery = FixedInt(FixedRound(centeryfrac));
+
+	if (rendermode == render_soft)
+		yslope = &yslopetab[viewheight*8 - centery];
 }
 
 void R_SetupFrame(player_t *player)