Slope fix, set acceleration to 10 for now - also view-step prediction fix to make it not seem like you're falling at a constant pace.

Source/Client/Player.c

@@ -148,12 +148,6 @@ void Player_Predict(void) {
 			self.movetype = MOVETYPE_NOCLIP;
 		}
 
-		if (self.pmove_flags & 0x80000) {
-			self.flags |= FL_ONGROUND;
-		} else {
-			self.flags &~= FL_ONGROUND;
-		}
-		
 		for ( int i = self.pmove_frame; i <= clientcommandframe; i++ ) {
 			if ( input_timelength == 0 ) {
 				break;
@@ -161,10 +155,6 @@ void Player_Predict(void) {
 			getinputstate( i );
 			runplayerphysics();
 		}
-		
-		if ( self.flags & FL_ONGROUND ) {
-			self.pmove_flags |= 0x80000;
-		}
 	}
 	
 	if ( autocvar_cl_smoothstairs && self.flags & FL_ONGROUND ) {
@@ -232,22 +222,12 @@ void Player_PreUpdate( void ) {
 		self.movetype = MOVETYPE_NOCLIP;
 	}
 
-	if ( self.pmove_flags & 0x80000 ) {
-		self.flags |= FL_ONGROUND;
-	} else {
-		self.flags &~= FL_ONGROUND;
-	}
-	
 	//we want to predict an exact copy of the data in the new packet
 	for ( ; self.pmove_frame <= servercommandframe; self.pmove_frame++ ) {
 		if ( getinputstate( self.pmove_frame ) )
 			runplayerphysics();
 	}
 
-	if ( self.flags & FL_ONGROUND ) {
-		self.pmove_flags |= 0x80000;
-	}
-
 	//we now have self.pmove_flags set properly...
 	
 	self.movetype = MOVETYPE_NONE;

Source/Math.h

@@ -69,29 +69,7 @@ float Math_CRandom( void ) {
 void Damage_Apply( entity eTarget, entity eAttacker, int iDamage, vector vHitPos, int iSkipArmor );
 #endif
 void runplayerphysics(void)
-{	//operates on self
-	float fallvel = ( self.flags & FL_ONGROUND )?0:-self.velocity_z;
+{
 	Physics_Run();
-	if ( ( self.flags & FL_ONGROUND ) && self.movetype == MOVETYPE_WALK && ( fallvel > 100 )) {
-#ifdef SSQC
-		if ( fallvel > 580 ) {
-			float fFallDamage = (fallvel-580) * ( 200 / ( 1024 - 580 ) );
-			Damage_Apply( self, world, fFallDamage, self.origin, FALSE );
-		} 
-#endif
-
-#ifdef SSQC
-	if ( cvar( "pm_bunnyspeedcap") == 0 ) {
-		return;
-	}
-#else
-	if ( serverkey( "pm_bunnyspeedcap") == 0 ) {
-		return;
-	}
-#endif
-		if ( fallvel > 245 ) {
-			self.velocity *= 0.25;
-		}
-	}
 }
 #endif

Source/Shared/Physics.c

@@ -24,11 +24,11 @@ vector input_movevalues;
 float input_buttons;
 
 #define PHYSICS_STEPHEIGHT 		18
-#define PHYSICS_AIRSTEPHEIGHT	18
+#define PHYSICS_AIRSTEPHEIGHT		18
 #define PHYSICS_FRICTION		4
-#define PHYSICS_EDGEFRICTION	2
+#define PHYSICS_EDGEFRICTION		2
 #define PHYSICS_GRAVITY			800
-#define PHYSICS_ACCELERATE		4
+#define PHYSICS_ACCELERATE		10
 #define PHYSICS_STOPSPEED		100
 
 #define PHYSICS_JUMP_CHAINWINDOW 0.5
@@ -314,12 +314,12 @@ void Physics_Run_Acceleration( float flMovetime, float flBefore ) {
 			// acceleration
 			f = flWishSpeed - ( self.velocity * vWishDirection );
 			if ( f > 0 ) {
-				self.velocity = self.velocity + vWishDirection * min( f, PHYSICS_ACCELERATE * flMovetime * flWishSpeed );
+				self.velocity += vWishDirection * min( f, PHYSICS_ACCELERATE * flMovetime * flWishSpeed );
 			}
 			
 		} else {
 			/*apply gravity*/
-			self.velocity_z = self.velocity_z - ( PHYSICS_GRAVITY * flMovetime );
+			self.velocity_z -= ( PHYSICS_GRAVITY * flMovetime );
 			
 			if ( flWishSpeed < 30 ) {
 				f = flWishSpeed - ( self.velocity * vWishDirection );
@@ -328,7 +328,7 @@ void Physics_Run_Acceleration( float flMovetime, float flBefore ) {
 			}
 			
 			if ( f > 0 ) {
-				self.velocity = self.velocity + vWishDirection * ( min( f, PHYSICS_ACCELERATE ) * flWishSpeed * flMovetime );
+				self.velocity += vWishDirection * ( min( f, PHYSICS_ACCELERATE ) * flWishSpeed * flMovetime );
 			}
 		}
 	}