Add slick surface support

[xonotic/xonotic-data.pk3dir.git] / qcsrc / common / physics.qc

diff --git a/qcsrc/common/physics.qc b/qcsrc/common/physics.qc
index 233e3c33d30e9fe70c86f7216ca767b8e83fcf9e..1b96fe03a7a613b03a63db0ced9d1559110f82f4 100644 (file)
--- a/qcsrc/common/physics.qc
+++ b/qcsrc/common/physics.qc
@@ -26,6 +26,9 @@ float AdjustAirAccelQW(float accelqw, float factor);
 .float stat_sv_maxspeed;
 .float stat_movement_highspeed;
 
+.float stat_sv_friction_on_land;
+.float stat_sv_friction_slick;
+
 .float stat_doublejump;
 
 .float stat_jumpspeedcap_min;
@@ -66,6 +69,10 @@ void Physics_AddStats()
        addstat(STAT_MOVEVARS_JUMPSPEEDCAP_MIN, AS_FLOAT, stat_jumpspeedcap_min);
        addstat(STAT_MOVEVARS_JUMPSPEEDCAP_MIN, AS_FLOAT, stat_jumpspeedcap_min);
        addstat(STAT_MOVEVARS_JUMPSPEEDCAP_DISABLE_ONRAMPS, AS_INT, stat_jumpspeedcap_disable_onramps);
+
+       // hacks
+       addstat(STAT_MOVEVARS_FRICTION_ONLAND, AS_FLOAT, stat_sv_friction_on_land);
+       addstat(STAT_MOVEVARS_FRICTION_SLICK, AS_FLOAT, stat_sv_friction_slick);
 }
 
 void Physics_UpdateStats(float maxspd_mod)
@@ -91,6 +98,9 @@ void Physics_UpdateStats(float maxspd_mod)
        self.stat_jumpspeedcap_min = PHYS_JUMPSPEEDCAP_MIN;
        self.stat_jumpspeedcap_max = PHYS_JUMPSPEEDCAP_MAX;
        self.stat_jumpspeedcap_disable_onramps = PHYS_JUMPSPEEDCAP_DISABLE_ONRAMPS;
+
+       self.stat_sv_friction_on_land = PHYS_FRICTION_ONLAND;
+       self.stat_sv_friction_slick = PHYS_FRICTION_SLICK;
 }
 #endif
 
@@ -1596,9 +1606,17 @@ void PM_walk(float buttons_prev, float maxspd_mod)
        float f = vlen(vec2(self.velocity));
        if (f > 0)
        {
+               float realfriction;
+               trace_dphitq3surfaceflags = 0;
+               tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 1', MOVE_NOMONSTERS, self);
                // TODO: apply edge friction
                // apply ground friction
-               f = 1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION * ((f < PHYS_STOPSPEED) ? (PHYS_STOPSPEED / f) : 1);
+               if(trace_dphitq3surfaceflags & Q3SURFACEFLAG_SLICK)
+                       realfriction = PHYS_FRICTION_SLICK;
+               else
+                       realfriction = PHYS_FRICTION;
+
+               f = 1 - PHYS_INPUT_TIMELENGTH * realfriction * ((f < PHYS_STOPSPEED) ? (PHYS_STOPSPEED / f) : 1);
                f = max(0, f);
                self.velocity *= f;
                /*