Added cl_bob_limit cvar which limits the maximum rage of view bobbing in a smooth...

Added cl_bob_limit_heightcheck cvar (off by default) which uses tracelines to limit the maximum value of cl_bob_limit based on the ceiling and floor height.

Added cl_bob_velocity_limit cvar which replaces the hard-coded 400 in a few places for xyspeed purposes.

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12286 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/view.c b/view.c
index 082365d4ef008e861f82e7d0fa24a62261debf39..6f86ac7bafcf0dcb6e2473f0b4bf77118f70ce8a 100644 (file)
--- a/view.c
+++ b/view.c
@@ -48,6 +48,10 @@ cvar_t cl_bobmodel = {CVAR_SAVE, "cl_bobmodel", "1", "enables gun bobbing"};
 cvar_t cl_bobmodel_side = {CVAR_SAVE, "cl_bobmodel_side", "0.15", "gun bobbing sideways sway amount"};
 cvar_t cl_bobmodel_up = {CVAR_SAVE, "cl_bobmodel_up", "0.06", "gun bobbing upward movement amount"};
 cvar_t cl_bobmodel_speed = {CVAR_SAVE, "cl_bobmodel_speed", "7", "gun bobbing speed"};
+cvar_t cl_bob_limit = {CVAR_SAVE, "cl_bob_limit", "7", "limits bobbing to this much distance from view_ofs"};
+cvar_t cl_bob_limit_heightcheck = {CVAR_SAVE, "cl_bob_limit_heightcheck", "0", "check ceiling and floor height against cl_bob_limit and scale down all view bobbing if could result in camera being in solid"};
+cvar_t cl_bob_limit_heightcheck_dontcrosswatersurface = {CVAR_SAVE, "cl_bob_limit_heightcheck_dontcrosswatersurface", "1", "limit cl_bob_limit to not crossing liquid surfaces also"};
+cvar_t cl_bob_velocity_limit = {CVAR_SAVE, "cl_bob_velocity_limit", "400", "limits the xyspeed value in the bobbing code"};
 
 cvar_t cl_leanmodel = {CVAR_SAVE, "cl_leanmodel", "0", "enables gun leaning"};
 cvar_t cl_leanmodel_side_speed = {CVAR_SAVE, "cl_leanmodel_side_speed", "0.7", "gun leaning sideways speed"};
@@ -661,7 +665,7 @@ void V_CalcRefdefUsing (const matrix4x4_t *entrendermatrix, const vec3_t clviewa
                        if (!cldead)
                        {
                                double xyspeed, bob, bobfall;
-                               float cycle;
+                               double cycle; // double-precision because cl.time can be a very large number, where float would get stuttery at high time values
                                vec_t frametime;
 
                                frametime = (cl.time - cl.calcrefdef_prevtime) * cl.movevars_timescale;
@@ -712,11 +716,36 @@ void V_CalcRefdefUsing (const matrix4x4_t *entrendermatrix, const vec3_t clviewa
                                VectorAdd(viewangles, gunangles, gunangles);
 
                                // bounded XY speed, used by several effects below
-                               xyspeed = bound (0, sqrt(clvelocity[0]*clvelocity[0] + clvelocity[1]*clvelocity[1]), 400);
+                               xyspeed = bound (0, sqrt(clvelocity[0]*clvelocity[0] + clvelocity[1]*clvelocity[1]), cl_bob_velocity_limit.value);
 
                                // vertical view bobbing code
                                if (cl_bob.value && cl_bobcycle.value)
                                {
+                                       float bob_limit = cl_bob_limit.value;
+
+                                       if (cl_bob_limit_heightcheck.integer)
+                                       {
+                                               // use traces to determine what range the view can bob in, and scale down the bob as needed
+                                               float trace1fraction;
+                                               float trace2fraction;
+                                               vec3_t bob_height_check_dest;
+
+                                               // these multipliers are expanded a bit (the actual bob sin range is from -0.4 to 1.0) to reduce nearclip issues, especially on water surfaces
+                                               bob_height_check_dest[0] = vieworg[0];
+                                               bob_height_check_dest[1] = vieworg[1];
+                                               bob_height_check_dest[2] = vieworg[2] + cl_bob_limit.value * 1.1f;
+                                               trace = CL_TraceLine(vieworg, bob_height_check_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY | (cl_bob_limit_heightcheck_dontcrosswatersurface.integer ? SUPERCONTENTS_LIQUIDSMASK : 0), collision_extendmovelength.value, true, false, NULL, false, true);
+                                               trace1fraction = trace.fraction;
+
+                                               bob_height_check_dest[0] = vieworg[0];
+                                               bob_height_check_dest[1] = vieworg[1];
+                                               bob_height_check_dest[2] = vieworg[2] + cl_bob_limit.value * -0.5f;
+                                               trace = CL_TraceLine(vieworg, bob_height_check_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY | (cl_bob_limit_heightcheck_dontcrosswatersurface.integer ? SUPERCONTENTS_LIQUIDSMASK : 0), collision_extendmovelength.value, true, false, NULL, false, true);
+                                               trace2fraction = trace.fraction;
+
+                                               bob_limit *= min(trace1fraction, trace2fraction);
+                                       }
+
                                        // LordHavoc: this code is *weird*, but not replacable (I think it
                                        // should be done in QC on the server, but oh well, quake is quake)
                                        // LordHavoc: figured out bobup: the time at which the sin is at 180
@@ -729,7 +758,8 @@ void V_CalcRefdefUsing (const matrix4x4_t *entrendermatrix, const vec3_t clviewa
                                                cycle = sin(M_PI + M_PI * (cycle-cl_bobup.value)/(1.0 - cl_bobup.value));
                                        // bob is proportional to velocity in the xy plane
                                        // (don't count Z, or jumping messes it up)
-                                       bob = xyspeed * bound(0, cl_bob.value, 0.05);
+                                       bob = xyspeed * cl_bob.value;
+                                       bob = bound(0, bob, bob_limit);
                                        bob = bob*0.3 + bob*0.7*cycle;
                                        vieworg[2] += bob;
                                        // we also need to adjust gunorg, or this appears like pushing the gun!
@@ -752,7 +782,7 @@ void V_CalcRefdefUsing (const matrix4x4_t *entrendermatrix, const vec3_t clviewa
                                                cycle = cos(M_PI * cycle / 0.5); // cos looks better here with the other view bobbing using sin
                                        else
                                                cycle = cos(M_PI + M_PI * (cycle-0.5)/0.5);
-                                       bob = bound(0, cl_bob2.value, 0.05) * cycle;
+                                       bob = cl_bob2.value * cycle;
 
                                        // this value slowly decreases from 1 to 0 when we stop touching the ground.
                                        // The cycle is later multiplied with it so the view smooths back to normal
@@ -769,8 +799,8 @@ void V_CalcRefdefUsing (const matrix4x4_t *entrendermatrix, const vec3_t clviewa
                                        // calculate the front and side of the player between the X and Y axes
                                        AngleVectors(viewangles, forward, right, up);
                                        // now get the speed based on those angles. The bounds should match the same value as xyspeed's
-                                       side = bound(-400, DotProduct (clvelocity, right) * cl.bob2_smooth, 400);
-                                       front = bound(-400, DotProduct (clvelocity, forward) * cl.bob2_smooth, 400);
+                                       side = bound(-cl_bob_velocity_limit.value, DotProduct (clvelocity, right) * cl.bob2_smooth, cl_bob_velocity_limit.value);
+                                       front = bound(-cl_bob_velocity_limit.value, DotProduct (clvelocity, forward) * cl.bob2_smooth, cl_bob_velocity_limit.value);
                                        VectorScale(forward, bob, forward);
                                        VectorScale(right, bob, right);
                                        // we use side with forward and front with right, so the bobbing goes
@@ -1104,6 +1134,10 @@ void V_Init (void)
        Cvar_RegisterVariable (&cl_bobmodel_side);
        Cvar_RegisterVariable (&cl_bobmodel_up);
        Cvar_RegisterVariable (&cl_bobmodel_speed);
+       Cvar_RegisterVariable (&cl_bob_limit);
+       Cvar_RegisterVariable (&cl_bob_limit_heightcheck);
+       Cvar_RegisterVariable (&cl_bob_limit_heightcheck_dontcrosswatersurface);
+       Cvar_RegisterVariable (&cl_bob_velocity_limit);
 
        Cvar_RegisterVariable (&cl_leanmodel);
        Cvar_RegisterVariable (&cl_leanmodel_side_speed);