Attempt to implement Q4engine style bob-rolling (the view discretely rolls to the...

TODO 1: Make it work around the center rather than the left side
TODO 2: Don't bob roll when not touching the ground
TODO 3: Write cvars in darkplaces.txt, set better defaults and possibly disable by default once the first TODOs are ready.

From: MirceaKitsune <sonichedgehog_hyperblast00@yahoo.com>

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10277 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/view.c b/view.c
index 34ca8c4b5fae2ec43b4a02d9cadb26ad8660da07..e54205748ae2c86f19ec62b30fd824d4d315ccfd 100644 (file)
--- a/view.c
+++ b/view.c
@@ -39,7 +39,9 @@ cvar_t cl_rollangle = {0, "cl_rollangle", "2.0", "how much to tilt the view when
 cvar_t cl_bob = {CVAR_SAVE, "cl_bob","0.02", "view bobbing amount"};
 cvar_t cl_bobcycle = {CVAR_SAVE, "cl_bobcycle","0.6", "view bobbing speed"};
 cvar_t cl_bobup = {CVAR_SAVE, "cl_bobup","0.5", "view bobbing adjustment that makes the up or down swing of the bob last longer"};
-
+cvar_t cl_bobroll = {CVAR_SAVE, "cl_bobroll","0.02", "view rolling amount"};
+cvar_t cl_bobrollcycle = {CVAR_SAVE, "cl_bobrollcycle","0.5", "view rolling speed"};
+cvar_t cl_bobrollup = {CVAR_SAVE, "cl_bobrollup","0.5", "view bobbing adjustment that makes the up or down swing of the roll last longer"};
 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"};
@@ -586,7 +588,8 @@ void V_CalcRefdef (void)
                                VectorAdd(vieworg, cl.punchvector, vieworg);
                                if (cl.stats[STAT_HEALTH] > 0)
                                {
-                                       double xyspeed, bob;
+                                       double xyspeed, bob, bobroll;
+                                       float cycle;
                                        vec_t frametime;
 
                                        frametime = cl.realframetime * cl.movevars_timescale;
@@ -640,7 +643,6 @@ void V_CalcRefdef (void)
                                        xyspeed = sqrt(cl.velocity[0]*cl.velocity[0] + cl.velocity[1]*cl.velocity[1]);
                                        if (cl_bob.value && cl_bobcycle.value)
                                        {
-                                               float cycle;
                                                // 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
@@ -663,6 +665,24 @@ void V_CalcRefdef (void)
                                                gunorg[2] += bound(-7, bob, 4);
                                        }
 
+                                       // view rolling code
+                                       // TODO 1: Make it work around the center rather than the left side
+                                       // TODO 2: Don't bob roll when not touching the ground
+                                       // TODO 3: Write cvars in darkplaces.txt, set better defaults and possibly disable by default once the first TODOs are ready.
+                                       if (cl_bobroll.value && cl_bobrollcycle.value)
+                                       {
+                                               cycle = cl.time / cl_bobrollcycle.value;
+                                               cycle -= (int) cycle;
+                                               if (cycle < cl_bobrollup.value)
+                                                       cycle = sin(M_PI * cycle / cl_bobrollup.value);
+                                               else
+                                                       cycle = sin(M_PI + M_PI * (cycle-cl_bobrollup.value)/(1.0 - cl_bobrollup.value));
+
+                                               bobroll = xyspeed * cl_bobroll.value;
+                                               bobroll = bobroll*0.3 + bobroll*0.7*cycle;
+                                               viewangles[2] = bound(-5, bobroll, 5);
+                                       }
+
                                        // gun model bobbing code
                                        if (cl_bob.value && cl_bobmodel.value)
                                        {
@@ -897,6 +917,9 @@ void V_Init (void)
        Cvar_RegisterVariable (&cl_bob);
        Cvar_RegisterVariable (&cl_bobcycle);
        Cvar_RegisterVariable (&cl_bobup);
+       Cvar_RegisterVariable (&cl_bobroll);
+       Cvar_RegisterVariable (&cl_bobrollcycle);
+       Cvar_RegisterVariable (&cl_bobrollup);
        Cvar_RegisterVariable (&cl_bobmodel);
        Cvar_RegisterVariable (&cl_bobmodel_side);
        Cvar_RegisterVariable (&cl_bobmodel_up);