sv_airstrafeaccel_qw cvar for tuning CPMA-style physics

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10210 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/cl_input.c b/cl_input.c
index aacdfcc5febea6a8eb01f96a559db26a80b603e3..4400e3a60ea8dcd8f4cb3ac4eada29f0b09bc29b 100644 (file)
--- a/cl_input.c
+++ b/cl_input.c
@@ -1099,6 +1099,25 @@ static vec_t CL_IsMoveInDirection(vec_t forward, vec_t side, vec_t angle)
        return 1 - fabs(angle);
 }
 
+static vec_t CL_GeomLerp(vec_t a, vec_t lerp, vec_t b)
+{
+       if(a == 0)
+       {
+               if(lerp < 1)
+                       return 0;
+               else
+                       return b;
+       }
+       if(b == 0)
+       {
+               if(lerp > 0)
+                       return 0;
+               else
+                       return a;
+       }
+       return a * pow(fabs(b / a), lerp);
+}
+
 void CL_ClientMovement_Physics_CPM_PM_Aircontrol(cl_clientmovement_state_t *s, vec3_t wishdir, vec_t wishspeed)
 {
        vec_t zspeed, speed, dot, k;
@@ -1353,7 +1372,7 @@ void CL_ClientMovement_Physics_Walk(cl_clientmovement_state_t *s)
                if (s->waterjumptime <= 0)
                {
                        // apply air speed limit
-                       vec_t accel, wishspeed0, wishspeed2, accelqw;
+                       vec_t accel, wishspeed0, wishspeed2, accelqw, strafity;
                        qboolean accelerating;
 
                        accelqw = cl.movevars_airaccel_qw;
@@ -1370,9 +1389,17 @@ void CL_ClientMovement_Physics_Walk(cl_clientmovement_state_t *s)
                        if(cl.movevars_airstopaccelerate != 0)
                                if(DotProduct(s->velocity, wishdir) < 0)
                                        accel = cl.movevars_airstopaccelerate;
-                       // this doesn't play well with analog input, but can't really be
-                       // fixed like the AirControl can. So, don't set the maxairstrafe*
-                       // cvars when you want to support analog input.
+                       strafity = CL_IsMoveInDirection(s->cmd.forwardmove, s->cmd.sidemove, -90) + CL_IsMoveInDirection(s->cmd.forwardmove, s->cmd.sidemove, +90); // if one is nonzero, other is always zero
+                       if(cl.movevars_maxairstrafespeed)
+                               wishspeed = min(wishspeed, CL_GeomLerp(cl.movevars_maxairspeed, strafity, cl.movevars_maxairstrafespeed));
+                       if(cl.movevars_airstrafeaccelerate)
+                               accel = CL_GeomLerp(cl.movevars_airaccelerate, strafity, cl.movevars_airstrafeaccelerate);
+                       if(cl.movevars_airstrafeaccel_qw)
+                               accelqw =
+                                       (((strafity > 0.5 ? cl.movevars_airstrafeaccel_qw : cl.movevars_airaccel_qw) >= 0) ? +1 : -1)
+                                       *
+                                       (1 - CL_GeomLerp(1 - fabs(cl.movevars_airaccel_qw), strafity, 1 - fabs(cl.movevars_airstrafeaccel_qw)));
+
                        if(s->cmd.forwardmove == 0 && s->cmd.sidemove != 0)
                        {
                                if(cl.movevars_maxairstrafespeed)
@@ -1461,6 +1488,7 @@ void CL_UpdateMoveVars(void)
                cl.movevars_airstopaccelerate = cl.statsf[STAT_MOVEVARS_AIRSTOPACCELERATE];
                cl.movevars_airstrafeaccelerate = cl.statsf[STAT_MOVEVARS_AIRSTRAFEACCELERATE];
                cl.movevars_maxairstrafespeed = cl.statsf[STAT_MOVEVARS_MAXAIRSTRAFESPEED];
+               cl.movevars_airstrafeaccel_qw = cl.statsf[STAT_MOVEVARS_AIRSTRAFEACCEL_QW];
                cl.movevars_aircontrol = cl.statsf[STAT_MOVEVARS_AIRCONTROL];
                cl.movevars_aircontrol_power = cl.statsf[STAT_MOVEVARS_AIRCONTROL_POWER];
                cl.movevars_warsowbunny_airforwardaccel = cl.statsf[STAT_MOVEVARS_WARSOWBUNNY_AIRFORWARDACCEL];
@@ -1494,6 +1522,7 @@ void CL_UpdateMoveVars(void)
                cl.movevars_airstopaccelerate = 0;
                cl.movevars_airstrafeaccelerate = 0;
                cl.movevars_maxairstrafespeed = 0;
+               cl.movevars_airstrafeaccel_qw = 0;
                cl.movevars_aircontrol = 0;
                cl.movevars_aircontrol_power = 2;
                cl.movevars_warsowbunny_airforwardaccel = 0;

diff --git a/client.h b/client.h
index 9ee76093e2999aea26f1de4925e525b538b5470d..8a8e192c9f70ee5108a4eacb962e1481c849c452 100644 (file)
--- a/client.h
+++ b/client.h
@@ -1191,6 +1191,7 @@ typedef struct client_state_s
        float movevars_airstopaccelerate;
        float movevars_airstrafeaccelerate;
        float movevars_maxairstrafespeed;
+       float movevars_airstrafeaccel_qw;
        float movevars_aircontrol;
        float movevars_aircontrol_power;
        float movevars_warsowbunny_airforwardaccel;

diff --git a/quakedef.h b/quakedef.h
index 091928504ecec577253b5697b6afd05d4f0a3093..1c1148e022ed755c4e50301c6dbaa8d5b50018b6 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_AIRSTRAFEACCEL_QW 223 ///< DP
 #define STAT_MOVEVARS_AIRCONTROL_POWER                                 224 ///< DP
 #define STAT_MOVEFLAGS                              225 ///< DP
 #define STAT_MOVEVARS_WARSOWBUNNY_AIRFORWARDACCEL      226 ///< DP

diff --git a/server.h b/server.h
index fdea10760234675d7e8d8c8b9e98105893f865da..db72d41dd32cb223e7ef9d244d1d2ed0e5a0a819 100644 (file)
--- a/server.h
+++ b/server.h
@@ -390,6 +390,7 @@ extern cvar_t sv_airaccelerate;
 extern cvar_t sv_airstopaccelerate;
 extern cvar_t sv_airstrafeaccelerate;
 extern cvar_t sv_maxairstrafespeed;
+extern cvar_t sv_airstrafeaccel_qw;
 extern cvar_t sv_aircontrol;
 extern cvar_t sv_aircontrol_power;
 extern cvar_t sv_allowdownloads;

diff --git a/sv_main.c b/sv_main.c
index 32abfe34b16e231e1a48473e2faf82eb87e8c2da..ad9a3a1384c5bf7d15ff7fbf0c77c5ee31db9b7e 100644 (file)
--- a/sv_main.c
+++ b/sv_main.c
@@ -58,6 +58,7 @@ cvar_t sv_airaccelerate = {0, "sv_airaccelerate", "-1", "rate at which a player
 cvar_t sv_airstopaccelerate = {0, "sv_airstopaccelerate", "0", "when set, replacement for sv_airaccelerate when moving backwards"};
 cvar_t sv_airstrafeaccelerate = {0, "sv_airstrafeaccelerate", "0", "when set, replacement for sv_airaccelerate when just strafing"};
 cvar_t sv_maxairstrafespeed = {0, "sv_maxairstrafespeed", "0", "when set, replacement for sv_maxairspeed when just strafing"};
+cvar_t sv_airstrafeaccel_qw = {0, "sv_airstrafeaccel_qw", "0", "when set, replacement for sv_airaccel_qw when just strafing"};
 cvar_t sv_aircontrol = {0, "sv_aircontrol", "0", "CPMA-style air control"};
 cvar_t sv_aircontrol_power = {0, "sv_aircontrol_power", "2", "CPMA-style air control exponent"};
 cvar_t sv_allowdownloads = {0, "sv_allowdownloads", "1", "whether to allow clients to download files from the server (does not affect http downloads)"};
@@ -379,6 +380,7 @@ void SV_Init (void)
        Cvar_RegisterVariable (&sv_airstopaccelerate);
        Cvar_RegisterVariable (&sv_airstrafeaccelerate);
        Cvar_RegisterVariable (&sv_maxairstrafespeed);
+       Cvar_RegisterVariable (&sv_airstrafeaccel_qw);
        Cvar_RegisterVariable (&sv_aircontrol);
        Cvar_RegisterVariable (&sv_aircontrol_power);
        Cvar_RegisterVariable (&sv_allowdownloads);
@@ -1966,6 +1968,7 @@ void SV_WriteClientdataToMessage (client_t *client, prvm_edict_t *ent, sizebuf_t
        statsf[STAT_MOVEVARS_AIRSTOPACCELERATE] = sv_airstopaccelerate.value;
        statsf[STAT_MOVEVARS_AIRSTRAFEACCELERATE] = sv_airstrafeaccelerate.value;
        statsf[STAT_MOVEVARS_MAXAIRSTRAFESPEED] = sv_maxairstrafespeed.value;
+       statsf[STAT_MOVEVARS_AIRSTRAFEACCEL_QW] = sv_airstrafeaccel_qw.value;
        statsf[STAT_MOVEVARS_AIRCONTROL] = sv_aircontrol.value;
        statsf[STAT_MOVEVARS_AIRCONTROL_POWER] = sv_aircontrol_power.value;
        statsf[STAT_MOVEVARS_WARSOWBUNNY_AIRFORWARDACCEL] = sv_warsowbunny_airforwardaccel.value;