new movement cvar and stat: sv_airaccel_qw_stretchfactor

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11152 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/cl_input.c b/cl_input.c
index 577df50572811787e858b511261fa5cfa345acf9..5bdc34bc46ae2026b23e6aa50930882bde87d436 100644 (file)
--- a/cl_input.c
+++ b/cl_input.c
@@ -1161,7 +1161,7 @@ float CL_ClientMovement_Physics_AdjustAirAccelQW(float accelqw, float factor)
                bound(0.000001, 1 - (1 - fabs(accelqw)) * factor, 1);
 }
 
-void CL_ClientMovement_Physics_PM_Accelerate(cl_clientmovement_state_t *s, vec3_t wishdir, vec_t wishspeed, vec_t wishspeed0, vec_t accel, vec_t accelqw, vec_t sidefric, vec_t speedlimit)
+void CL_ClientMovement_Physics_PM_Accelerate(cl_clientmovement_state_t *s, vec3_t wishdir, vec_t wishspeed, vec_t wishspeed0, vec_t accel, vec_t accelqw, vec_t stretchfactor, vec_t sidefric, vec_t speedlimit)
 {
        vec_t vel_straight;
        vec_t vel_z;
@@ -1170,10 +1170,16 @@ void CL_ClientMovement_Physics_PM_Accelerate(cl_clientmovement_state_t *s, vec3_
        vec3_t vel_xy;
        vec_t vel_xy_current;
        vec_t vel_xy_backward, vel_xy_forward;
-       qboolean speedclamp;
+       vec_t speedclamp;
 
-       speedclamp = (accelqw < 0);
-       if(speedclamp)
+       if(stretchfactor > 0)
+               speedclamp = stretchfactor;
+       else if(accelqw < 0)
+               speedclamp = 1;
+       else
+               speedclamp = -1; // no clamping
+
+       if(accelqw < 0)
                accelqw = -accelqw;
 
        if(cl.moveflags & MOVEFLAG_Q2AIRACCELERATE)
@@ -1220,13 +1226,15 @@ void CL_ClientMovement_Physics_PM_Accelerate(cl_clientmovement_state_t *s, vec3_
 
        VectorMA(vel_perpend, vel_straight, wishdir, s->velocity);
 
-       if(speedclamp)
+       if(speedclamp >= 0)
        {
-               vel_xy_current = min(VectorLength(s->velocity), vel_xy_forward);
-               if(vel_xy_current > 0) // prevent division by zero
+               vec_t vel_xy_preclamp;
+               vel_xy_preclamp = VectorLength(s->velocity);
+               if(vel_xy_preclamp > 0) // prevent division by zero
                {
-                       VectorNormalize(s->velocity);
-                       VectorScale(s->velocity, vel_xy_current, s->velocity);
+                       vel_xy_current += (vel_xy_forward - vel_xy_current) * speedclamp;
+                       if(vel_xy_current < vel_xy_preclamp)
+                               VectorScale(s->velocity, (vel_xy_current / vel_xy_preclamp), s->velocity);
                }
        }
 
@@ -1422,7 +1430,7 @@ void CL_ClientMovement_Physics_Walk(cl_clientmovement_state_t *s)
                        if(cl.movevars_warsowbunny_turnaccel && accelerating && s->cmd.sidemove == 0 && s->cmd.forwardmove != 0)
                                CL_ClientMovement_Physics_PM_AirAccelerate(s, wishdir, wishspeed2);
                        else
-                               CL_ClientMovement_Physics_PM_Accelerate(s, wishdir, wishspeed, wishspeed0, accel, accelqw, cl.movevars_airaccel_sideways_friction / cl.movevars_maxairspeed, cl.movevars_airspeedlimit_nonqw);
+                               CL_ClientMovement_Physics_PM_Accelerate(s, wishdir, wishspeed, wishspeed0, accel, accelqw, cl.movevars_airaccel_qw_stretchfactor, cl.movevars_airaccel_sideways_friction / cl.movevars_maxairspeed, cl.movevars_airspeedlimit_nonqw);
 
                        if(cl.movevars_aircontrol)
                                CL_ClientMovement_Physics_CPM_PM_Aircontrol(s, wishdir, wishspeed2);
@@ -1476,6 +1484,7 @@ void CL_UpdateMoveVars(void)
                cl.movevars_maxairspeed = cl.statsf[STAT_MOVEVARS_MAXAIRSPEED];
                cl.movevars_stepheight = cl.statsf[STAT_MOVEVARS_STEPHEIGHT];
                cl.movevars_airaccel_qw = cl.statsf[STAT_MOVEVARS_AIRACCEL_QW];
+               cl.movevars_airaccel_qw_stretchfactor = cl.statsf[STAT_MOVEVARS_AIRACCEL_QW_STRETCHFACTOR];
                cl.movevars_airaccel_sideways_friction = cl.statsf[STAT_MOVEVARS_AIRACCEL_SIDEWAYS_FRICTION];
                cl.movevars_friction = cl.statsf[STAT_MOVEVARS_FRICTION];
                cl.movevars_wallfriction = cl.statsf[STAT_MOVEVARS_WALLFRICTION];
@@ -1515,6 +1524,7 @@ void CL_UpdateMoveVars(void)
                cl.movevars_maxairspeed = cl_movement_maxairspeed.value;
                cl.movevars_stepheight = cl_movement_stepheight.value;
                cl.movevars_airaccel_qw = cl_movement_airaccel_qw.value;
+               cl.movevars_airaccel_qw_stretchfactor = 0;
                cl.movevars_airaccel_sideways_friction = cl_movement_airaccel_sideways_friction.value;
                cl.movevars_airstopaccelerate = 0;
                cl.movevars_airstrafeaccelerate = 0;

diff --git a/client.h b/client.h
index 12770afa7f8dcd3aa01737fa15c37b9450a44a29..1ea3e64ec16a4ac93c06c42b32fc19c2ed61acf5 100644 (file)
--- a/client.h
+++ b/client.h
@@ -1204,6 +1204,7 @@ typedef struct client_state_s
        float movevars_maxairspeed;
        float movevars_stepheight;
        float movevars_airaccel_qw;
+       float movevars_airaccel_qw_stretchfactor;
        float movevars_airaccel_sideways_friction;
        float movevars_airstopaccelerate;
        float movevars_airstrafeaccelerate;

diff --git a/quakedef.h b/quakedef.h
index a712fe734636bcdea2a84138914b3ea1cbcbaba2..2310bc2062e0143336e2c0b1e60de3583d2e96f0 100644 (file)
--- a/quakedef.h
+++ b/quakedef.h
@@ -229,6 +229,7 @@ extern char engineversion[128];
 //#define STAT_TIME                    17 ///< FTE
 //#define STAT_VIEW2           20 ///< FTE
 #define STAT_VIEWZOOM          21 ///< DP
+#define STAT_MOVEVARS_AIRACCEL_QW_STRETCHFACTOR 220 ///< DP
 #define STAT_MOVEVARS_AIRCONTROL_PENALTY                                       221 ///< DP
 #define STAT_MOVEVARS_AIRSPEEDLIMIT_NONQW 222 ///< DP
 #define STAT_MOVEVARS_AIRSTRAFEACCEL_QW 223 ///< DP

diff --git a/sv_main.c b/sv_main.c
index 0166241b8b416b9ff93cacf1ebe3fb07d04364c5..05e6db009279b65a42c57ece9cf5f1413cdf201b 100644 (file)
--- a/sv_main.c
+++ b/sv_main.c
@@ -53,6 +53,7 @@ cvar_t slowmo = {0, "slowmo", "1.0", "controls game speed, 0.5 is half speed, 2
 cvar_t sv_accelerate = {0, "sv_accelerate", "10", "rate at which a player accelerates to sv_maxspeed"};
 cvar_t sv_aim = {CVAR_SAVE, "sv_aim", "2", "maximum cosine angle for quake's vertical autoaim, a value above 1 completely disables the autoaim, quake used 0.93"};
 cvar_t sv_airaccel_qw = {0, "sv_airaccel_qw", "1", "ratio of QW-style air control as opposed to simple acceleration; when < 0, the speed is clamped against the maximum allowed forward speed after the move"};
+cvar_t sv_airaccel_qw_stretchfactor = {0, "sv_airaccel_qw_stretchfactor", "0", "when set, the maximum acceleration increase the player may get compared to forward-acceleration when strafejumping"};
 cvar_t sv_airaccel_sideways_friction = {0, "sv_airaccel_sideways_friction", "", "anti-sideways movement stabilization (reduces speed gain when zigzagging); when < 0, only so much friction is applied that braking (by accelerating backwards) cannot be stronger"};
 cvar_t sv_airaccelerate = {0, "sv_airaccelerate", "-1", "rate at which a player accelerates to sv_maxairspeed while in the air, if less than 0 the sv_accelerate variable is used instead"};
 cvar_t sv_airstopaccelerate = {0, "sv_airstopaccelerate", "0", "when set, replacement for sv_airaccelerate when moving backwards"};
@@ -453,6 +454,7 @@ void SV_Init (void)
        Cvar_RegisterVariable (&sv_accelerate);
        Cvar_RegisterVariable (&sv_aim);
        Cvar_RegisterVariable (&sv_airaccel_qw);
+       Cvar_RegisterVariable (&sv_airaccel_qw_stretchfactor);
        Cvar_RegisterVariable (&sv_airaccel_sideways_friction);
        Cvar_RegisterVariable (&sv_airaccelerate);
        Cvar_RegisterVariable (&sv_airstopaccelerate);
@@ -2034,6 +2036,7 @@ void SV_WriteClientdataToMessage (client_t *client, prvm_edict_t *ent, sizebuf_t
        statsf[STAT_MOVEVARS_MAXAIRSPEED] = sv_maxairspeed.value;
        statsf[STAT_MOVEVARS_STEPHEIGHT] = sv_stepheight.value;
        statsf[STAT_MOVEVARS_AIRACCEL_QW] = sv_airaccel_qw.value;
+       statsf[STAT_MOVEVARS_AIRACCEL_QW_STRETCHFACTOR] = sv_airaccel_qw_stretchfactor.value;
        statsf[STAT_MOVEVARS_AIRACCEL_SIDEWAYS_FRICTION] = sv_airaccel_sideways_friction.value;
        statsf[STAT_MOVEVARS_FRICTION] = sv_friction.value;
        statsf[STAT_MOVEVARS_WATERFRICTION] = sv_waterfriction.value >= 0 ? sv_waterfriction.value : sv_friction.value;