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[xonotic/xonotic-data.pk3dir.git] / qcsrc / server / cl_physics.qc

diff --git a/qcsrc/server/cl_physics.qc b/qcsrc/server/cl_physics.qc
index ff5fbaa37ee4cf436796d3bc709e8164993c5de6..10086bbc43c9d01c7f2d3050187d7b831b022e27 100644 (file)
--- a/qcsrc/server/cl_physics.qc
+++ b/qcsrc/server/cl_physics.qc
@@ -13,6 +13,7 @@ float sv_airaccel_qw;
 float sv_airstopaccelerate;
 float sv_airstrafeaccelerate;
 float sv_maxairstrafespeed;
+float sv_airstrafeaccel_qw;
 float sv_aircontrol;
 float sv_aircontrol_power;
 float sv_warsowbunny_airforwardaccel;
@@ -20,6 +21,7 @@ float sv_warsowbunny_accel;
 float sv_warsowbunny_topspeed;
 float sv_warsowbunny_turnaccel;
 float sv_warsowbunny_backtosideratio;
+float sv_speedlimit;
 
 .float ladder_time;
 .entity ladder_entity;
@@ -386,7 +388,7 @@ float IsMoveInDirection(vector mv, float angle) // key mix factor
 {
        if(mv_x == 0 && mv_y == 0)
                return 0; // avoid division by zero
-       angle = RAD2DEG * atan2(mv_y, mv_x);
+       angle -= RAD2DEG * atan2(mv_y, mv_x);
        angle = remainder(angle, 360) / 45;
        if(angle >  1)
                return 0;
@@ -395,6 +397,25 @@ float IsMoveInDirection(vector mv, float angle) // key mix factor
        return 1 - fabs(angle);
 }
 
+float GeomLerp(float a, float lerp, float 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 CPM_PM_Aircontrol(vector wishdir, float wishspeed)
 {
        float zspeed, xyspeed, dot, k;
@@ -428,6 +449,11 @@ void CPM_PM_Aircontrol(vector wishdir, float wishspeed)
        self.velocity_z = zspeed;
 }
 
+float AdjustAirAccelQW(float accelqw, float factor)
+{
+       return copysign(bound(0.000001, 1 - (1 - fabs(accelqw)) * factor, 1), accelqw);
+}
+
 // example config for alternate speed clamping:
 //   sv_airaccel_qw 0.8
 //   sv_airaccel_sideways_friction 0
@@ -460,6 +486,8 @@ void PM_Accelerate(vector wishdir, float wishspeed, float wishspeed0, float acce
        step = accel * frametime * wishspeed0;
 
        vel_xy_current  = vlen(vel_xy);
+       if(sv_speedlimit)
+               accelqw = AdjustAirAccelQW(accelqw, (sv_speedlimit - bound(wishspeed, vel_xy_current, sv_speedlimit)) / max(1, sv_speedlimit - wishspeed));
        vel_xy_forward  = vel_xy_current + bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
        vel_xy_backward = vel_xy_current - bound(0, wishspeed + vel_xy_current, step) * accelqw - step * (1 - accelqw);
        if(vel_xy_backward < 0)
@@ -585,6 +613,7 @@ string GetMapname(void);
 float speedaward_lastupdate;
 float speedaward_lastsent;
 .float jumppadusetime;
+var float autocvar_g_movement_highspeed = 1;
 void SV_PlayerPhysics()
 {
        local vector wishvel, wishdir, v;
@@ -594,6 +623,13 @@ void SV_PlayerPhysics()
        float not_allowed_to_move;
        string c;
 
+       // fix physics stats for g_movement_highspeed
+       self.stat_sv_airaccel_qw = AdjustAirAccelQW(sv_airaccel_qw, autocvar_g_movement_highspeed);
+       if(sv_airstrafeaccel_qw)
+               self.stat_sv_airstrafeaccel_qw = AdjustAirAccelQW(sv_airstrafeaccel_qw, autocvar_g_movement_highspeed);
+       else
+               self.stat_sv_airstrafeaccel_qw = 0;
+
     if(self.PlayerPhysplug)
         if(self.PlayerPhysplug())
             return;
@@ -1138,8 +1174,9 @@ void SV_PlayerPhysics()
                        float accelerating;
                        float wishspeed2;
                        float airaccelqw;
+                       float strafity;
 
-                       airaccelqw = sv_airaccel_qw;
+                       airaccelqw = self.stat_sv_airaccel_qw;
                        accelerating = (self.velocity * wishdir > 0);
                        wishspeed2 = wishspeed;
 
@@ -1147,24 +1184,21 @@ void SV_PlayerPhysics()
                        if(sv_airstopaccelerate)
                                if(self.velocity * wishdir < 0)
                                        airaccel = sv_airstopaccelerate*maxspd_mod;
-                       // this doesn't play well with analog input, but can't r
-                       // fixed like the AirControl can. So, don't set the maxa
-                       // cvars when you want to support analog input.
-                       if(self.movement_x == 0 && self.movement_y != 0)
-                       {
-                               if(sv_maxairstrafespeed)
-                               {
-                                       wishspeed = min(wishspeed, sv_maxairstrafespeed*maxspd_mod);
-                                       if(sv_maxairstrafespeed < sv_maxairspeed)
-                                               airaccelqw = 1;
-                               }
-                               if(sv_airstrafeaccelerate)
-                               {
-                                       airaccel = sv_airstrafeaccelerate*maxspd_mod;
-                                       if(sv_airstrafeaccelerate > sv_airaccelerate)
-                                               airaccelqw = 1;
-                               }
-                       }
+                       // note that for straight forward jumping:
+                       // step = accel * frametime * wishspeed0;
+                       // accel  = bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
+                       // -->
+                       // dv/dt = accel * maxspeed (when slow)
+                       // dv/dt = accel * maxspeed * (1 - accelqw) (when fast)
+                       // log dv/dt = logaccel + logmaxspeed (when slow)
+                       // log dv/dt = logaccel + logmaxspeed + log(1 - accelqw) (when fast)
+                       strafity = IsMoveInDirection(self.movement, -90) + IsMoveInDirection(self.movement, +90); // if one is nonzero, other is always zero
+                       if(sv_maxairstrafespeed)
+                               wishspeed = min(wishspeed, GeomLerp(sv_maxairspeed*maxspd_mod, strafity, sv_maxairstrafespeed*maxspd_mod));
+                       if(sv_airstrafeaccelerate)
+                               airaccel = GeomLerp(airaccel, strafity, sv_airstrafeaccelerate*maxspd_mod);
+                       if(self.stat_sv_airstrafeaccel_qw)
+                               airaccelqw = copysign(1-GeomLerp(1-fabs(self.stat_sv_airaccel_qw), strafity, 1-fabs(self.stat_sv_airstrafeaccel_qw)), ((strafity > 0.5) ? self.stat_sv_airstrafeaccel_qw : self.stat_sv_airaccel_qw));
                        // !CPM
 
                        if(sv_warsowbunny_turnaccel && accelerating && self.movement_y == 0 && self.movement_x != 0)