- SW: Restore random element to player's weapon left/right bobbing behind a CVAR.

# Conflicts:
#	source/core/gamecvars.cpp
#	source/core/gamecvars.h

source/core/gamecvars.cpp

@@ -92,6 +92,7 @@ CVARD(Int, cl_showweapon, 1, CVAR_ARCHIVE, "enable/disable show weapons") // onl
 CVARD(Bool, cl_sointerpolation, true, CVAR_ARCHIVE, "enable/disable sector object interpolation") // only implemented in SW
 CVARD(Bool, cl_syncinput, false, CVAR_ARCHIVE, "enable/disable synchronized input with game's ticrate") // only implemented in SW
 CVARD(Bool, cl_dukefixrpgrecoil, true, CVAR_ARCHIVE, "soften recoil of Duke 3D's RPG")
+CVARD(Bool, cl_smoothsway, true, CVAR_ARCHIVE, "move SW weapon left and right smoothly while bobbing")
 CUSTOM_CVARD(Int, cl_crosshairscale, 50, CVAR_ARCHIVE, "changes the size of the crosshair")
 {
 	if (self < 1) self = 1;

source/core/gamecvars.h

@@ -26,6 +26,7 @@ EXTERN_CVAR(Int, cl_crosshairscale)
 EXTERN_CVAR(Bool, cl_sointerpolation)
 EXTERN_CVAR(Bool, cl_syncinput)
 EXTERN_CVAR(Bool, cl_dukefixrpgrecoil)
+EXTERN_CVAR(Bool, cl_smoothsway)
 
 EXTERN_CVAR(Bool, demorec_seeds_cvar)
 EXTERN_CVAR(Bool, demoplay_diffs)

source/sw/src/panel.cpp

@@ -6808,8 +6808,21 @@ pWeaponBob(PANEL_SPRITEp psp, short condition)
         // sin_xxx moves the weapon left-right
         // //
 
-        // increment the ndx into the sin table and wrap.
+        // increment the ndx into the sin table
-        psp->sin_ndx = (psp->sin_ndx + (synctics * 12)) & 2047;
+        psp->sin_ndx = psp->sin_ndx + (synctics << 3);
+        // add an additional increment to ndx
+        if (cl_smoothsway)
+        {
+            // add a fixed factor to it
+            psp->sin_ndx += (synctics << 2);
+        }
+        else
+        {
+            // add a random factor to it
+            psp->sin_ndx += (RANDOM_P2(8) * synctics);
+        }
+        // wrap
+        psp->sin_ndx &= 2047;
 
         // get height
         xdiff = psp->sin_amt * calcSinTableValue(psp->sin_ndx) / 16384.;