X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=sv_user.c;h=8ce2181dd086392971fba90edced8e2ac5ea58ef;hp=27a6e108b5e8f7299ed347d213db24b46b96e41b;hb=16742571f9a7d696a654668febdc10b4f4affd57;hpb=45982a9894c5bff60ff494a0f82865ec267d52f7

diff --git a/sv_user.c b/sv_user.c
index 27a6e108..8ce2181d 100644
--- a/sv_user.c
+++ b/sv_user.c
@@ -21,28 +21,19 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "quakedef.h"
 
-edict_t	*sv_player;
+cvar_t sv_edgefriction = {0, "edgefriction", "2", "how much you slow down when nearing a ledge you might fall off"};
+cvar_t sv_idealpitchscale = {0, "sv_idealpitchscale","0.8", "how much to look up/down slopes and stairs when not using freelook"};
+cvar_t sv_maxspeed = {CVAR_NOTIFY, "sv_maxspeed", "320", "maximum speed a player can accelerate to when on ground (can be exceeded by tricks)"};
+cvar_t sv_maxairspeed = {0, "sv_maxairspeed", "30", "maximum speed a player can accelerate to when airborn (note that it is possible to completely stop by moving the opposite direction)"};
+cvar_t sv_accelerate = {0, "sv_accelerate", "10", "rate at which a player accelerates to sv_maxspeed"};
+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_wateraccelerate = {0, "sv_wateraccelerate", "-1", "rate at which a player accelerates to sv_maxspeed while in the air, if less than 0 the sv_accelerate variable is used instead"};
+cvar_t sv_clmovement_enable = {0, "sv_clmovement_enable", "1", "whether to allow clients to use cl_movement prediction, which can cause choppy movement on the server which may annoy other players"};
+cvar_t sv_clmovement_minping = {0, "sv_clmovement_minping", "0", "if client ping is below this time in milliseconds, then their ability to use cl_movement prediction is disabled for a while (as they don't need it)"};
+cvar_t sv_clmovement_minping_disabletime = {0, "sv_clmovement_minping_disabletime", "1000", "when client falls below minping, disable their prediction for this many milliseconds (should be at least 1000 or else their prediction may turn on/off frequently)"};
+cvar_t sv_clmovement_waitforinput = {0, "sv_clmovement_waitforinput", "16", "when a client does not send input for this many frames, force them to move anyway (unlike QuakeWorld)"};
 
-cvar_t	sv_edgefriction = {0, "edgefriction", "2"};
-cvar_t	sv_predict = {0, "sv_predict", "1"};
-cvar_t	sv_deltacompress = {0, "sv_deltacompress", "1"};
-cvar_t	sv_idealpitchscale = {0, "sv_idealpitchscale","0.8"};
-cvar_t	sv_maxspeed = {CVAR_NOTIFY, "sv_maxspeed", "320"};
-cvar_t	sv_accelerate = {0, "sv_accelerate", "10"};
-
-static	vec3_t		forward, right, up;
-
-vec3_t	wishdir;
-float	wishspeed;
-
-// world
-float	*angles;
-float	*origin;
-float	*velocity;
-
-qboolean	onground;
-
-usercmd_t	cmd;
+static usercmd_t cmd;
 
 
 /*
@@ -53,40 +44,42 @@ SV_SetIdealPitch
 #define	MAX_FORWARD	6
 void SV_SetIdealPitch (void)
 {
-	float	angleval, sinval, cosval;
+	float	angleval, sinval, cosval, step, dir;
 	trace_t	tr;
 	vec3_t	top, bottom;
 	float	z[MAX_FORWARD];
 	int		i, j;
-	int		step, dir, steps;
+	int		steps;
 
-	if (!((int)sv_player->v.flags & FL_ONGROUND))
+	if (!((int)host_client->edict->fields.server->flags & FL_ONGROUND))
 		return;
-		
-	angleval = sv_player->v.angles[YAW] * M_PI*2 / 360;
+
+	angleval = host_client->edict->fields.server->angles[YAW] * M_PI*2 / 360;
 	sinval = sin(angleval);
 	cosval = cos(angleval);
 
 	for (i=0 ; i<MAX_FORWARD ; i++)
 	{
-		top[0] = sv_player->v.origin[0] + cosval*(i+3)*12;
-		top[1] = sv_player->v.origin[1] + sinval*(i+3)*12;
-		top[2] = sv_player->v.origin[2] + sv_player->v.view_ofs[2];
-		
+		top[0] = host_client->edict->fields.server->origin[0] + cosval*(i+3)*12;
+		top[1] = host_client->edict->fields.server->origin[1] + sinval*(i+3)*12;
+		top[2] = host_client->edict->fields.server->origin[2] + host_client->edict->fields.server->view_ofs[2];
+
 		bottom[0] = top[0];
 		bottom[1] = top[1];
 		bottom[2] = top[2] - 160;
-		
-		tr = SV_Move (top, vec3_origin, vec3_origin, bottom, MOVE_NOMONSTERS, sv_player);
-		if (tr.allsolid)
-			return;	// looking at a wall, leave ideal the way is was
 
+		tr = SV_Move (top, vec3_origin, vec3_origin, bottom, MOVE_NOMONSTERS, host_client->edict, SUPERCONTENTS_SOLID);
+		// if looking at a wall, leave ideal the way is was
+		if (tr.startsolid)
+			return;
+
+		// near a dropoff
 		if (tr.fraction == 1)
-			return;	// near a dropoff
-		
+			return;
+
 		z[i] = top[2] + tr.fraction*(bottom[2]-top[2]);
 	}
-	
+
 	dir = 0;
 	steps = 0;
 	for (j=1 ; j<i ; j++)
@@ -95,24 +88,29 @@ void SV_SetIdealPitch (void)
 		if (step > -ON_EPSILON && step < ON_EPSILON)
 			continue;
 
+		// mixed changes
 		if (dir && ( step-dir > ON_EPSILON || step-dir < -ON_EPSILON ) )
-			return;		// mixed changes
+			return;
 
-		steps++;	
+		steps++;
 		dir = step;
 	}
-	
+
 	if (!dir)
 	{
-		sv_player->v.idealpitch = 0;
+		host_client->edict->fields.server->idealpitch = 0;
 		return;
 	}
-	
+
 	if (steps < 2)
 		return;
-	sv_player->v.idealpitch = -dir * sv_idealpitchscale.value;
+	host_client->edict->fields.server->idealpitch = -dir * sv_idealpitchscale.value;
 }
 
+static vec3_t wishdir, forward, right, up;
+static float wishspeed;
+
+static qboolean onground;
 
 /*
 ==================
@@ -122,43 +120,37 @@ SV_UserFriction
 */
 void SV_UserFriction (void)
 {
-	float	*vel;
-	float	speed, newspeed, control;
-	vec3_t	start, stop;
-	float	friction;
-	trace_t	trace;
-	
-	vel = velocity;
-	
-	speed = sqrt(vel[0]*vel[0] +vel[1]*vel[1]);
+	float speed, newspeed, control, friction;
+	vec3_t start, stop;
+	trace_t trace;
+
+	speed = sqrt(host_client->edict->fields.server->velocity[0]*host_client->edict->fields.server->velocity[0]+host_client->edict->fields.server->velocity[1]*host_client->edict->fields.server->velocity[1]);
 	if (!speed)
 		return;
 
-// if the leading edge is over a dropoff, increase friction
-	start[0] = stop[0] = origin[0] + vel[0]/speed*16;
-	start[1] = stop[1] = origin[1] + vel[1]/speed*16;
-	start[2] = origin[2] + sv_player->v.mins[2];
+	// if the leading edge is over a dropoff, increase friction
+	start[0] = stop[0] = host_client->edict->fields.server->origin[0] + host_client->edict->fields.server->velocity[0]/speed*16;
+	start[1] = stop[1] = host_client->edict->fields.server->origin[1] + host_client->edict->fields.server->velocity[1]/speed*16;
+	start[2] = host_client->edict->fields.server->origin[2] + host_client->edict->fields.server->mins[2];
 	stop[2] = start[2] - 34;
 
-	trace = SV_Move (start, vec3_origin, vec3_origin, stop, MOVE_NOMONSTERS, sv_player);
+	trace = SV_Move (start, vec3_origin, vec3_origin, stop, MOVE_NOMONSTERS, host_client->edict, SV_GenericHitSuperContentsMask(host_client->edict));
 
 	if (trace.fraction == 1.0)
 		friction = sv_friction.value*sv_edgefriction.value;
 	else
 		friction = sv_friction.value;
 
-// apply friction	
+	// apply friction
 	control = speed < sv_stopspeed.value ? sv_stopspeed.value : speed;
 	newspeed = speed - sv.frametime*control*friction;
-	
+
 	if (newspeed < 0)
 		newspeed = 0;
 	else
 		newspeed /= speed;
 
-	vel[0] = vel[0] * newspeed;
-	vel[1] = vel[1] * newspeed;
-	vel[2] = vel[2] * newspeed;
+	VectorScale(host_client->edict->fields.server->velocity, newspeed, host_client->edict->fields.server->velocity);
 }
 
 /*
@@ -166,82 +158,60 @@ void SV_UserFriction (void)
 SV_Accelerate
 ==============
 */
-#if 0
-void SV_Accelerate (vec3_t wishvel)
-{
-	int			i;
-	float		addspeed, accelspeed;
-	vec3_t		pushvec;
-
-	if (wishspeed == 0)
-		return;
-
-	VectorSubtract (wishvel, velocity, pushvec);
-	addspeed = VectorNormalize (pushvec);
-
-	accelspeed = sv_accelerate.value*sv.frametime*addspeed;
-	if (accelspeed > addspeed)
-		accelspeed = addspeed;
-	
-	for (i=0 ; i<3 ; i++)
-		velocity[i] += accelspeed*pushvec[i];	
-}
-#endif
 void SV_Accelerate (void)
 {
-	int			i;
-	float		addspeed, accelspeed, currentspeed;
+	int i;
+	float addspeed, accelspeed, currentspeed;
 
-	currentspeed = DotProduct (velocity, wishdir);
+	currentspeed = DotProduct (host_client->edict->fields.server->velocity, wishdir);
 	addspeed = wishspeed - currentspeed;
 	if (addspeed <= 0)
 		return;
 	accelspeed = sv_accelerate.value*sv.frametime*wishspeed;
 	if (accelspeed > addspeed)
 		accelspeed = addspeed;
-	
+
 	for (i=0 ; i<3 ; i++)
-		velocity[i] += accelspeed*wishdir[i];	
+		host_client->edict->fields.server->velocity[i] += accelspeed*wishdir[i];
 }
 
 void SV_AirAccelerate (vec3_t wishveloc)
 {
-	int			i;
-	float		addspeed, wishspd, accelspeed, currentspeed;
-		
+	int i;
+	float addspeed, wishspd, accelspeed, currentspeed;
+
 	wishspd = VectorNormalizeLength (wishveloc);
-	if (wishspd > 30)
-		wishspd = 30;
-	currentspeed = DotProduct (velocity, wishveloc);
+	if (wishspd > sv_maxairspeed.value)
+		wishspd = sv_maxairspeed.value;
+	currentspeed = DotProduct (host_client->edict->fields.server->velocity, wishveloc);
 	addspeed = wishspd - currentspeed;
 	if (addspeed <= 0)
 		return;
-//	accelspeed = sv_accelerate.value * sv.frametime;
-	accelspeed = sv_accelerate.value*wishspeed * sv.frametime;
+	accelspeed = (sv_airaccelerate.value < 0 ? sv_accelerate.value : sv_airaccelerate.value)*wishspeed * sv.frametime;
 	if (accelspeed > addspeed)
 		accelspeed = addspeed;
-	
+
 	for (i=0 ; i<3 ; i++)
-		velocity[i] += accelspeed*wishveloc[i];	
+		host_client->edict->fields.server->velocity[i] += accelspeed*wishveloc[i];
 }
 
 
 void DropPunchAngle (void)
 {
-	float	len;
-	eval_t	*val;
-	
-	len = VectorNormalizeLength (sv_player->v.punchangle);
-	
+	float len;
+	prvm_eval_t *val;
+
+	len = VectorNormalizeLength (host_client->edict->fields.server->punchangle);
+
 	len -= 10*sv.frametime;
 	if (len < 0)
 		len = 0;
-	VectorScale (sv_player->v.punchangle, len, sv_player->v.punchangle);
-	
-	if ((val = GETEDICTFIELDVALUE(sv_player, eval_punchvector)))
+	VectorScale (host_client->edict->fields.server->punchangle, len, host_client->edict->fields.server->punchangle);
+
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.punchvector)))
 	{
 		len = VectorNormalizeLength (val->vector);
-		
+
 		len -= 20*sv.frametime;
 		if (len < 0)
 			len = 0;
@@ -249,6 +219,28 @@ void DropPunchAngle (void)
 	}
 }
 
+/*
+===================
+SV_FreeMove
+===================
+*/
+void SV_FreeMove (void)
+{
+	int i;
+	float wishspeed;
+
+	AngleVectors (host_client->edict->fields.server->v_angle, forward, right, up);
+
+	for (i = 0; i < 3; i++)
+		host_client->edict->fields.server->velocity[i] = forward[i] * cmd.forwardmove + right[i] * cmd.sidemove;
+
+	host_client->edict->fields.server->velocity[2] += cmd.upmove;
+
+	wishspeed = VectorLength(host_client->edict->fields.server->velocity);
+	if (wishspeed > sv_maxspeed.value)
+		VectorScale(host_client->edict->fields.server->velocity, sv_maxspeed.value / wishspeed, host_client->edict->fields.server->velocity);
+}
+
 /*
 ===================
 SV_WaterMove
@@ -257,14 +249,12 @@ SV_WaterMove
 */
 void SV_WaterMove (void)
 {
-	int		i;
-	vec3_t	wishvel;
-	float	speed, newspeed, wishspeed, addspeed, accelspeed, temp;
+	int i;
+	vec3_t wishvel;
+	float speed, newspeed, wishspeed, addspeed, accelspeed, temp;
 
-//
-// user intentions
-//
-	AngleVectors (sv_player->v.v_angle, forward, right, up);
+	// user intentions
+	AngleVectors (host_client->edict->fields.server->v_angle, forward, right, up);
 
 	for (i=0 ; i<3 ; i++)
 		wishvel[i] = forward[i]*cmd.forwardmove + right[i]*cmd.sidemove;
@@ -274,7 +264,7 @@ void SV_WaterMove (void)
 	else
 		wishvel[2] += cmd.upmove;
 
-	wishspeed = Length(wishvel);
+	wishspeed = VectorLength(wishvel);
 	if (wishspeed > sv_maxspeed.value)
 	{
 		temp = sv_maxspeed.value/wishspeed;
@@ -283,24 +273,20 @@ void SV_WaterMove (void)
 	}
 	wishspeed *= 0.7;
 
-//
-// water friction
-//
-	speed = Length (velocity);
+	// water friction
+	speed = VectorLength(host_client->edict->fields.server->velocity);
 	if (speed)
 	{
-		newspeed = speed - sv.frametime * speed * sv_friction.value;
+		newspeed = speed - sv.frametime * speed * sv_waterfriction.value;
 		if (newspeed < 0)
 			newspeed = 0;
 		temp = newspeed/speed;
-		VectorScale (velocity, temp, velocity);
+		VectorScale(host_client->edict->fields.server->velocity, temp, host_client->edict->fields.server->velocity);
 	}
 	else
 		newspeed = 0;
-	
-//
-// water acceleration
-//
+
+	// water acceleration
 	if (!wishspeed)
 		return;
 
@@ -309,24 +295,23 @@ void SV_WaterMove (void)
 		return;
 
 	VectorNormalize (wishvel);
-	accelspeed = sv_accelerate.value * wishspeed * sv.frametime;
+	accelspeed = (sv_wateraccelerate.value < 0 ? sv_accelerate.value : sv_wateraccelerate.value) * wishspeed * sv.frametime;
 	if (accelspeed > addspeed)
 		accelspeed = addspeed;
 
 	for (i=0 ; i<3 ; i++)
-		velocity[i] += accelspeed * wishvel[i];
+		host_client->edict->fields.server->velocity[i] += accelspeed * wishvel[i];
 }
 
 void SV_WaterJump (void)
 {
-	if (sv.time > sv_player->v.teleport_time
-	|| !sv_player->v.waterlevel)
+	if (sv.time > host_client->edict->fields.server->teleport_time || !host_client->edict->fields.server->waterlevel)
 	{
-		sv_player->v.flags = (int)sv_player->v.flags & ~FL_WATERJUMP;
-		sv_player->v.teleport_time = 0;
+		host_client->edict->fields.server->flags = (int)host_client->edict->fields.server->flags & ~FL_WATERJUMP;
+		host_client->edict->fields.server->teleport_time = 0;
 	}
-	sv_player->v.velocity[0] = sv_player->v.movedir[0];
-	sv_player->v.velocity[1] = sv_player->v.movedir[1];
+	host_client->edict->fields.server->velocity[0] = host_client->edict->fields.server->movedir[0];
+	host_client->edict->fields.server->velocity[1] = host_client->edict->fields.server->movedir[1];
 }
 
 
@@ -338,30 +323,27 @@ SV_AirMove
 */
 void SV_AirMove (void)
 {
-	int			i;
-	vec3_t		wishvel;
-	float		fmove, smove, temp;
+	int i;
+	vec3_t wishvel;
+	float fmove, smove, temp;
 
 	// LordHavoc: correct quake movement speed bug when looking up/down
 	wishvel[0] = wishvel[2] = 0;
-	wishvel[1] = sv_player->v.angles[1];
+	wishvel[1] = host_client->edict->fields.server->angles[1];
 	AngleVectors (wishvel, forward, right, up);
-//	AngleVectors (sv_player->v.angles, forward, right, up);
 
 	fmove = cmd.forwardmove;
 	smove = cmd.sidemove;
-	
+
 // hack to not let you back into teleporter
-	if (sv.time < sv_player->v.teleport_time && fmove < 0)
+	if (sv.time < host_client->edict->fields.server->teleport_time && fmove < 0)
 		fmove = 0;
-		
+
 	for (i=0 ; i<3 ; i++)
 		wishvel[i] = forward[i]*fmove + right[i]*smove;
 
-	if ( (int)sv_player->v.movetype != MOVETYPE_WALK)
-		wishvel[2] = cmd.upmove;
-	else
-		wishvel[2] = 0;
+	if ((int)host_client->edict->fields.server->movetype != MOVETYPE_WALK)
+		wishvel[2] += cmd.upmove;
 
 	VectorCopy (wishvel, wishdir);
 	wishspeed = VectorNormalizeLength(wishdir);
@@ -371,20 +353,22 @@ void SV_AirMove (void)
 		VectorScale (wishvel, temp, wishvel);
 		wishspeed = sv_maxspeed.value;
 	}
-	
-	if ( sv_player->v.movetype == MOVETYPE_NOCLIP)
-	{	// noclip
-		VectorCopy (wishvel, velocity);
+
+	if (host_client->edict->fields.server->movetype == MOVETYPE_NOCLIP)
+	{
+		// noclip
+		VectorCopy (wishvel, host_client->edict->fields.server->velocity);
 	}
-	else if ( onground )
+	else if (onground && (!sv_gameplayfix_qwplayerphysics.integer || !(host_client->edict->fields.server->button2 || !((int)host_client->edict->fields.server->flags & FL_JUMPRELEASED))))
 	{
 		SV_UserFriction ();
 		SV_Accelerate ();
 	}
 	else
-	{	// not on ground, so little effect on velocity
+	{
+		// not on ground, so little effect on velocity
 		SV_AirAccelerate (wishvel);
-	}		
+	}
 }
 
 /*
@@ -397,265 +381,473 @@ the angle fields specify an exact angular motion in degrees
 */
 void SV_ClientThink (void)
 {
-	vec3_t		v_angle;
+	vec3_t v_angle;
 
-	if (sv_player->v.movetype == MOVETYPE_NONE)
+	if (host_client->edict->fields.server->movetype == MOVETYPE_NONE)
 		return;
-	
-	onground = (int)sv_player->v.flags & FL_ONGROUND;
 
-	origin = sv_player->v.origin;
-	velocity = sv_player->v.velocity;
+	onground = (int)host_client->edict->fields.server->flags & FL_ONGROUND;
 
 	DropPunchAngle ();
-	
-//
-// if dead, behave differently
-//
-	if (sv_player->v.health <= 0)
+
+	// if dead, behave differently
+	if (host_client->edict->fields.server->health <= 0)
 		return;
 
-//
-// angles
-// show 1/3 the pitch angle and all the roll angle
 	cmd = host_client->cmd;
-	angles = sv_player->v.angles;
-	
-	VectorAdd (sv_player->v.v_angle, sv_player->v.punchangle, v_angle);
-	angles[ROLL] = V_CalcRoll (sv_player->v.angles, sv_player->v.velocity)*4;
-	if (!sv_player->v.fixangle)
+
+	// angles
+	// show 1/3 the pitch angle and all the roll angle
+	VectorAdd (host_client->edict->fields.server->v_angle, host_client->edict->fields.server->punchangle, v_angle);
+	host_client->edict->fields.server->angles[ROLL] = V_CalcRoll (host_client->edict->fields.server->angles, host_client->edict->fields.server->velocity)*4;
+	if (!host_client->edict->fields.server->fixangle)
 	{
-		// LordHavoc: pitch was ugly to begin with...  removed except in water
-		if (sv_player->v.waterlevel >= 2)
-			angles[PITCH] = -v_angle[PITCH]/3;
-		else
-			angles[PITCH] = 0;
-		angles[YAW] = v_angle[YAW];
+		host_client->edict->fields.server->angles[PITCH] = -v_angle[PITCH]/3;
+		host_client->edict->fields.server->angles[YAW] = v_angle[YAW];
 	}
 
-	if ( (int)sv_player->v.flags & FL_WATERJUMP )
+	if ( (int)host_client->edict->fields.server->flags & FL_WATERJUMP )
 	{
 		SV_WaterJump ();
 		return;
 	}
-//
-// walk
-//
-	if ( (sv_player->v.waterlevel >= 2)	&& (sv_player->v.movetype != MOVETYPE_NOCLIP) )
+
+	/*
+	// Player is (somehow) outside of the map, or flying, or noclipping
+	if (host_client->edict->fields.server->movetype != MOVETYPE_NOCLIP && (host_client->edict->fields.server->movetype == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict)))
+	//if (host_client->edict->fields.server->movetype == MOVETYPE_NOCLIP || host_client->edict->fields.server->movetype == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict))
+	{
+		SV_FreeMove ();
+		return;
+	}
+	*/
+
+	// walk
+	if ((host_client->edict->fields.server->waterlevel >= 2) && (host_client->edict->fields.server->movetype != MOVETYPE_NOCLIP))
 	{
 		SV_WaterMove ();
 		return;
 	}
 
-	SV_AirMove ();	
+	SV_AirMove ();
 }
 
-
 /*
 ===================
 SV_ReadClientMove
 ===================
 */
-void SV_ReadClientMove (usercmd_t *move)
+int sv_numreadmoves = 0;
+usercmd_t sv_readmoves[CL_MAX_USERCMDS];
+void SV_ReadClientMove (void)
 {
-	int		i;
-	vec3_t	angle;
-	int		bits;
-	eval_t	*val;
-	float	total;
-	
-// read ping time
-	host_client->ping_times[host_client->num_pings % NUM_PING_TIMES] = sv.time - MSG_ReadFloat ();
-	host_client->num_pings++;
-	for (i=0, total = 0;i < NUM_PING_TIMES;i++)
-		total += host_client->ping_times[i];
-	host_client->ping = total / NUM_PING_TIMES; // can be used for prediction
-	host_client->latency = 0;
-	if (sv_predict.value && (svs.maxclients > 1) && (!sv.paused)) // if paused or a local game, don't predict
-		host_client->latency = host_client->ping;
-	if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_ping)))
-		val->_float = host_client->ping * 1000.0;
-
-// read current angles
-	// dpprotocol
-	for (i=0 ; i<3 ; i++)
-		angle[i] = MSG_ReadPreciseAngle ();
-
-	VectorCopy (angle, host_client->edict->v.v_angle);
-		
-// read movement
-	move->forwardmove = MSG_ReadShort ();
-	move->sidemove = MSG_ReadShort ();
-	move->upmove = MSG_ReadShort ();
-	if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_movement)))
+	int i;
+	usercmd_t newmove;
+	usercmd_t *move = &newmove;
+
+	// reset stale client move state if a level change has occurred
+	if (host_client->cmd.receivetime > sv.time + 0.1 || !host_client->spawned)
 	{
-		val->vector[0] = move->forwardmove;
-		val->vector[1] = move->sidemove;
-		val->vector[2] = move->upmove;
+		memset(&host_client->cmd, 0, sizeof(host_client->cmd));
+		host_client->movesequence = 0;
+#ifdef NUM_PING_TIMES
+		for (i=0;i < NUM_PING_TIMES;i++)
+			host_client->ping_times[i] = 0;
+		host_client->num_pings = 0;
+#endif
+		host_client->ping = 0;
+		host_client->clmovement_disabletimeout = realtime + 0.1;
 	}
-	
-// read buttons
-	bits = MSG_ReadByte ();
-	host_client->edict->v.button0 = bits & 1;
-	host_client->edict->v.button2 = (bits & 2)>>1;
-	// LordHavoc: added 6 new buttons
-	if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button3))) val->_float = ((bits >> 2) & 1);
-	if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button4))) val->_float = ((bits >> 3) & 1);
-	if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button5))) val->_float = ((bits >> 4) & 1);
-	if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button6))) val->_float = ((bits >> 5) & 1);
-	if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button7))) val->_float = ((bits >> 6) & 1);
-	if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button8))) val->_float = ((bits >> 7) & 1);
-
-	i = MSG_ReadByte ();
-	if (i)
-		host_client->edict->v.impulse = i;
-}
 
-/*
-===================
-SV_ReadClientMessage
+	memset(move, 0, sizeof(*move));
 
-Returns false if the client should be killed
-===================
-*/
-qboolean SV_ReadClientMessage (void)
-{
-	int		ret;
-	int		cmd;
-	char		*s;
+	if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
+
+	// read ping time
+	if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE && sv.protocol != PROTOCOL_DARKPLACES1 && sv.protocol != PROTOCOL_DARKPLACES2 && sv.protocol != PROTOCOL_DARKPLACES3 && sv.protocol != PROTOCOL_DARKPLACES4 && sv.protocol != PROTOCOL_DARKPLACES5 && sv.protocol != PROTOCOL_DARKPLACES6)
+		move->sequence = MSG_ReadLong ();
+	move->time = MSG_ReadFloat ();
+	if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
+	move->receivetime = (float)sv.time;
+
+	// limit reported time to current time
+	// (incase the client is trying to cheat)
+	move->time = min(move->time, move->receivetime + sv.frametime);
+
+	// read current angles
+	for (i = 0;i < 3;i++)
+	{
+		if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE)
+			move->viewangles[i] = MSG_ReadAngle8i();
+		else if (sv.protocol == PROTOCOL_DARKPLACES1)
+			move->viewangles[i] = MSG_ReadAngle16i();
+		else if (sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3)
+			move->viewangles[i] = MSG_ReadAngle32f();
+		else
+			move->viewangles[i] = MSG_ReadAngle16i();
+	}
+	if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
+
+	// read movement
+	move->forwardmove = MSG_ReadCoord16i ();
+	move->sidemove = MSG_ReadCoord16i ();
+	move->upmove = MSG_ReadCoord16i ();
+	if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
+
+	// read buttons
+	// be sure to bitwise OR them into the move->buttons because we want to
+	// accumulate button presses from multiple packets per actual move
+	if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4 || sv.protocol == PROTOCOL_DARKPLACES5)
+		move->buttons = MSG_ReadByte ();
+	else
+		move->buttons = MSG_ReadLong ();
+	if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
+
+	// read impulse
+	move->impulse = MSG_ReadByte ();
+	if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 
-	do
+	// PRYDON_CLIENTCURSOR
+	if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE && sv.protocol != PROTOCOL_DARKPLACES1 && sv.protocol != PROTOCOL_DARKPLACES2 && sv.protocol != PROTOCOL_DARKPLACES3 && sv.protocol != PROTOCOL_DARKPLACES4 && sv.protocol != PROTOCOL_DARKPLACES5)
 	{
-nextmsg:
-		ret = NET_GetMessage (host_client->netconnection);
-		if (ret == -1)
+		// 30 bytes
+		move->cursor_screen[0] = MSG_ReadShort() * (1.0f / 32767.0f);
+		move->cursor_screen[1] = MSG_ReadShort() * (1.0f / 32767.0f);
+		move->cursor_start[0] = MSG_ReadFloat();
+		move->cursor_start[1] = MSG_ReadFloat();
+		move->cursor_start[2] = MSG_ReadFloat();
+		move->cursor_impact[0] = MSG_ReadFloat();
+		move->cursor_impact[1] = MSG_ReadFloat();
+		move->cursor_impact[2] = MSG_ReadFloat();
+		move->cursor_entitynumber = (unsigned short)MSG_ReadShort();
+		if (move->cursor_entitynumber >= prog->max_edicts)
 		{
-			Sys_Printf ("SV_ReadClientMessage: NET_GetMessage failed\n");
-			return false;
+			Con_DPrintf("SV_ReadClientMessage: client send bad cursor_entitynumber\n");
+			move->cursor_entitynumber = 0;
 		}
-		if (!ret)
-			return true;
+		// as requested by FrikaC, cursor_trace_ent is reset to world if the
+		// entity is free at time of receipt
+		if (PRVM_EDICT_NUM(move->cursor_entitynumber)->priv.server->free)
+			move->cursor_entitynumber = 0;
+		if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
+	}
 
-		MSG_BeginReading ();
+	// if the previous move has not been applied yet, we need to accumulate
+	// the impulse/buttons from it
+	if (!host_client->cmd.applied)
+	{
+		if (!move->impulse)
+			move->impulse = host_client->cmd.impulse;
+		move->buttons |= host_client->cmd.buttons;
+	}
 
-		while (1)
-		{
-			if (!host_client->active)
-				return false;	// a command caused an error
+	// disable clientside movement prediction in some cases
+	if (ceil((move->receivetime - move->time) * 1000.0) < sv_clmovement_minping.integer)
+		host_client->clmovement_disabletimeout = realtime + sv_clmovement_minping_disabletime.value / 1000.0;
+	if (!sv_clmovement_enable.integer || host_client->clmovement_disabletimeout > realtime)
+		move->sequence = 0;
 
-			if (msg_badread)
+	// now store this move for later execution
+	// (we have to buffer the moves because of old ones being repeated)
+	if (sv_numreadmoves < CL_MAX_USERCMDS)
+		sv_readmoves[sv_numreadmoves++] = *move;
+}
+
+void SV_ExecuteClientMoves(void)
+{
+	int moveindex;
+	float moveframetime;
+	double oldframetime;
+	double oldframetime2;
+#ifdef NUM_PING_TIMES
+	double total;
+#endif
+	if (sv_numreadmoves < 1)
+		return;
+	// only start accepting input once the player is spawned
+	if (!host_client->spawned)
+		return;
+	if (sv_readmoves[sv_numreadmoves-1].sequence && sv_clmovement_enable.integer && sv_clmovement_waitforinput.integer > 0)
+	{
+		// process the moves in order and ignore old ones
+		// but always trust the latest move
+		// (this deals with bogus initial move sequences after level change,
+		//  where the client will eventually catch up with the level change
+		//  and reset its move sequence)
+		for (moveindex = 0;moveindex < sv_numreadmoves;moveindex++)
+		{
+			usercmd_t *move = sv_readmoves + moveindex;
+			if (host_client->cmd.sequence < move->sequence || moveindex == sv_numreadmoves - 1)
 			{
-				Sys_Printf ("SV_ReadClientMessage: badread\n");
-				return false;
-			}	
-	
-			cmd = MSG_ReadChar ();
-			
-			switch (cmd)
+				// this is a new move
+				moveframetime = bound(0, move->time - host_client->cmd.time, 0.1);
+				//Con_Printf("movesequence = %i (%i lost), moveframetime = %f\n", move->sequence, move->sequence ? move->sequence - host_client->movesequence - 1 : 0, moveframetime);
+				host_client->cmd = *move;
+				host_client->movesequence = move->sequence;
+
+				// if using prediction, we need to perform moves when packets are
+				// received, even if multiple occur in one frame
+				// (they can't go beyond the current time so there is no cheat issue
+				//  with this approach, and if they don't send input for a while they
+				//  start moving anyway, so the longest 'lagaport' possible is
+				//  determined by the sv_clmovement_waitforinput cvar)
+				if (moveframetime <= 0)
+					continue;
+				oldframetime = prog->globals.server->frametime;
+				oldframetime2 = sv.frametime;
+				// update ping time for qc to see while executing this move
+				host_client->ping = host_client->cmd.receivetime - host_client->cmd.time;
+				// the server and qc frametime values must be changed temporarily
+				sv.frametime = moveframetime;
+				prog->globals.server->frametime = moveframetime;
+				SV_Physics_ClientEntity(host_client->edict);
+				sv.frametime = oldframetime2;
+				prog->globals.server->frametime = oldframetime;
+				host_client->clmovement_skipphysicsframes = sv_clmovement_waitforinput.integer;
+			}
+		}
+	}
+	else
+	{
+		// try to gather button bits from old moves, but only if their time is
+		// advancing (ones with the same timestamp can't be trusted)
+		for (moveindex = 0;moveindex < sv_numreadmoves-1;moveindex++)
+		{
+			usercmd_t *move = sv_readmoves + moveindex;
+			if (host_client->cmd.time < move->time)
 			{
-			case -1:
-				goto nextmsg;		// end of message
-				
-			default:
-				Sys_Printf ("SV_ReadClientMessage: unknown command char %i\n", cmd);
-				return false;
-							
-			case clc_nop:
-//				Sys_Printf ("clc_nop\n");
-				break;
-				
-			case clc_stringcmd:	
-				s = MSG_ReadString ();
-				ret = 0;
-				if (Q_strncasecmp(s, "status", 6) == 0
-				 || Q_strncasecmp(s, "name", 4) == 0
-				 || Q_strncasecmp(s, "say", 3) == 0
-				 || Q_strncasecmp(s, "say_team", 8) == 0
-				 || Q_strncasecmp(s, "tell", 4) == 0
-				 || Q_strncasecmp(s, "color", 5) == 0
-				 || Q_strncasecmp(s, "kill", 4) == 0
-				 || Q_strncasecmp(s, "pause", 5) == 0
-				 || Q_strncasecmp(s, "spawn", 5) == 0
-				 || Q_strncasecmp(s, "begin", 5) == 0
-				 || Q_strncasecmp(s, "prespawn", 8) == 0
-				 || Q_strncasecmp(s, "kick", 4) == 0
-				 || Q_strncasecmp(s, "ping", 4) == 0
-				 || Q_strncasecmp(s, "ban", 3) == 0
-				 || Q_strncasecmp(s, "pmodel", 6) == 0
-				 || (gamemode == GAME_NEHAHRA && (Q_strncasecmp(s, "max", 3) == 0 || Q_strncasecmp(s, "monster", 7) == 0 || Q_strncasecmp(s, "scrag", 5) == 0 || Q_strncasecmp(s, "gimme", 5) == 0 || Q_strncasecmp(s, "wraith", 6) == 0))
-				 || (gamemode != GAME_NEHAHRA && (Q_strncasecmp(s, "god", 3) == 0 || Q_strncasecmp(s, "notarget", 8) == 0 || Q_strncasecmp(s, "fly", 3) == 0 || Q_strncasecmp(s, "give", 4) == 0 || Q_strncasecmp(s, "noclip", 6) == 0)))
-				{
-					ret = 1;
-					Cmd_ExecuteString (s, src_client);
-				}
-				else
-					Con_DPrintf("%s tried to %s\n", host_client->name, s);
-				/*
-				if (ret == 2)
-					Cbuf_InsertText (s);
-				else if (ret == 1)
-					Cmd_ExecuteString (s, src_client);
-				else
-					Con_DPrintf("%s tried to %s\n", host_client->name, s);
-				*/
-				break;
-
-			case clc_disconnect:
-//				Sys_Printf ("SV_ReadClientMessage: client disconnected\n");
-				return false;
-
-			case clc_move:
-				SV_ReadClientMove (&host_client->cmd);
-				break;
+				sv_readmoves[sv_numreadmoves-1].buttons |= move->buttons;
+				if (move->impulse)
+					sv_readmoves[sv_numreadmoves-1].impulse = move->impulse;
 			}
 		}
-	} while (ret == 1);
+		// now copy the new move
+		host_client->cmd = sv_readmoves[sv_numreadmoves-1];
+	}
+	host_client->movesequence = host_client->cmd.sequence;
 
-	return true;
+	// calculate average ping time
+	host_client->ping = host_client->cmd.receivetime - host_client->cmd.time;
+#ifdef NUM_PING_TIMES
+	host_client->ping_times[host_client->num_pings % NUM_PING_TIMES] = host_client->cmd.receivetime - host_client->cmd.time;
+	host_client->num_pings++;
+	for (i=0, total = 0;i < NUM_PING_TIMES;i++)
+		total += host_client->ping_times[i];
+	host_client->ping = total / NUM_PING_TIMES;
+#endif
+}
+
+void SV_ApplyClientMove (void)
+{
+	prvm_eval_t *val;
+	usercmd_t *move = &host_client->cmd;
+
+	if (!move->receivetime)
+		return;
+
+	// note: a move can be applied multiple times if the client packets are
+	// not coming as often as the physics is executed, and the move must be
+	// applied before running qc each time because the id1 qc had a bug where
+	// it clears self.button2 in PlayerJump, causing pogostick behavior if
+	// moves are not applied every time before calling qc
+	move->applied = true;
+
+	// set the edict fields
+	host_client->edict->fields.server->button0 = move->buttons & 1;
+	host_client->edict->fields.server->button2 = (move->buttons & 2)>>1;
+	if (move->impulse)
+		host_client->edict->fields.server->impulse = move->impulse;
+	// only send the impulse to qc once
+	move->impulse = 0;
+	VectorCopy(move->viewangles, host_client->edict->fields.server->v_angle);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button3))) val->_float = ((move->buttons >> 2) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button4))) val->_float = ((move->buttons >> 3) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button5))) val->_float = ((move->buttons >> 4) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button6))) val->_float = ((move->buttons >> 5) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button7))) val->_float = ((move->buttons >> 6) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button8))) val->_float = ((move->buttons >> 7) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button9))) val->_float = ((move->buttons >> 11) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button10))) val->_float = ((move->buttons >> 12) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button11))) val->_float = ((move->buttons >> 13) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button12))) val->_float = ((move->buttons >> 14) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button13))) val->_float = ((move->buttons >> 15) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button14))) val->_float = ((move->buttons >> 16) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button15))) val->_float = ((move->buttons >> 17) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.button16))) val->_float = ((move->buttons >> 18) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.buttonuse))) val->_float = ((move->buttons >> 8) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.buttonchat))) val->_float = ((move->buttons >> 9) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.cursor_active))) val->_float = ((move->buttons >> 10) & 1);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.movement))) VectorSet(val->vector, move->forwardmove, move->sidemove, move->upmove);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.cursor_screen))) VectorCopy(move->cursor_screen, val->vector);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.cursor_trace_start))) VectorCopy(move->cursor_start, val->vector);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.cursor_trace_endpos))) VectorCopy(move->cursor_impact, val->vector);
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.cursor_trace_ent))) val->edict = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM(move->cursor_entitynumber));
+	if ((val = PRVM_EDICTFIELDVALUE(host_client->edict, prog->fieldoffsets.ping))) val->_float = host_client->ping * 1000.0;
+}
+
+void SV_FrameLost(int framenum)
+{
+	if (host_client->entitydatabase5)
+		EntityFrame5_LostFrame(host_client->entitydatabase5, framenum);
 }
 
+void SV_FrameAck(int framenum)
+{
+	if (host_client->entitydatabase)
+		EntityFrame_AckFrame(host_client->entitydatabase, framenum);
+	else if (host_client->entitydatabase4)
+		EntityFrame4_AckFrame(host_client->entitydatabase4, framenum, true);
+	else if (host_client->entitydatabase5)
+		EntityFrame5_AckFrame(host_client->entitydatabase5, framenum);
+}
 
 /*
-==================
-SV_RunClients
-==================
+===================
+SV_ReadClientMessage
+===================
 */
-void SV_RunClients (void)
+extern void SV_SendServerinfo(client_t *client);
+extern sizebuf_t vm_tempstringsbuf;
+void SV_ReadClientMessage(void)
 {
-	int				i;
+	int cmd, num, start;
+	char *s;
 
-	for (i=0, host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
+	//MSG_BeginReading ();
+	sv_numreadmoves = 0;
+
+	for(;;)
 	{
 		if (!host_client->active)
-			continue;
-	
-		sv_player = host_client->edict;
+		{
+			// a command caused an error
+			SV_DropClient (false);
+			return;
+		}
 
-		if (!SV_ReadClientMessage ())
+		if (msg_badread)
 		{
-			SV_DropClient (false);	// client misbehaved...
-			continue;
+			Con_Print("SV_ReadClientMessage: badread\n");
+			SV_DropClient (false);
+			return;
 		}
 
-		if (!host_client->spawned)
+		cmd = MSG_ReadByte ();
+		if (cmd == -1)
 		{
-		// clear client movement until a new packet is received
-			memset (&host_client->cmd, 0, sizeof(host_client->cmd));
-			continue;
+			// end of message
+			// apply the moves that were read this frame
+			SV_ExecuteClientMoves();
+			break;
 		}
 
-// always pause in single player if in console or menus
-		if (!sv.paused && (svs.maxclients > 1 || key_dest == key_game) )
+		switch (cmd)
 		{
-			// LordHavoc: QuakeC replacement for SV_ClientThink (player movement)
-			if (SV_PlayerPhysicsQC)
+		default:
+			Con_Printf("SV_ReadClientMessage: unknown command char %i\n", cmd);
+			SV_DropClient (false);
+			return;
+
+		case clc_nop:
+			break;
+
+		case clc_stringcmd:
+			s = MSG_ReadString ();
+			if (strncasecmp(s, "spawn", 5) == 0
+			 || strncasecmp(s, "begin", 5) == 0
+			 || strncasecmp(s, "prespawn", 8) == 0)
+				Cmd_ExecuteString (s, src_client);
+			else if (prog->funcoffsets.SV_ParseClientCommand)
 			{
-				pr_global_struct->time = sv.time;
-				pr_global_struct->self = EDICT_TO_PROG(sv_player);
-				PR_ExecuteProgram ((func_t)(SV_PlayerPhysicsQC - pr_functions), "");
+				int restorevm_tempstringsbuf_cursize;
+				restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
+				PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(s);
+				prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
+				PRVM_ExecuteProgram (prog->funcoffsets.SV_ParseClientCommand, "QC function SV_ParseClientCommand is missing");
+				vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 			}
 			else
-				SV_ClientThink ();
+				Cmd_ExecuteString (s, src_client);
+			break;
+
+		case clc_disconnect:
+			SV_DropClient (false); // client wants to disconnect
+			return;
+
+		case clc_move:
+			SV_ReadClientMove();
+			break;
+
+		case clc_ackdownloaddata:
+			start = MSG_ReadLong();
+			num = MSG_ReadShort();
+			if (host_client->download_file && host_client->download_started)
+			{
+				if (host_client->download_expectedposition == start)
+				{
+					int size = (int)FS_FileSize(host_client->download_file);
+					// a data block was successfully received by the client,
+					// update the expected position on the next data block
+					host_client->download_expectedposition = start + num;
+					// if this was the last data block of the file, it's done
+					if (host_client->download_expectedposition >= FS_FileSize(host_client->download_file))
+					{
+						// tell the client that the download finished
+						// we need to calculate the crc now
+						//
+						// note: at this point the OS probably has the file
+						// entirely in memory, so this is a faster operation
+						// now than it was when the download started.
+						//
+						// it is also preferable to do this at the end of the
+						// download rather than the start because it reduces
+						// potential for Denial Of Service attacks against the
+						// server.
+						int crc;
+						unsigned char *temp;
+						FS_Seek(host_client->download_file, 0, SEEK_SET);
+						temp = Mem_Alloc(tempmempool, size);
+						FS_Read(host_client->download_file, temp, size);
+						crc = CRC_Block(temp, size);
+						Mem_Free(temp);
+						// calculated crc, send the file info to the client
+						// (so that it can verify the data)
+						Host_ClientCommands(va("\ncl_downloadfinished %i %i %s\n", size, crc, host_client->download_name));
+						Con_DPrintf("Download of %s by %s has finished\n", host_client->download_name, host_client->name);
+						FS_Close(host_client->download_file);
+						host_client->download_file = NULL;
+						host_client->download_name[0] = 0;
+						host_client->download_expectedposition = 0;
+						host_client->download_started = false;
+					}
+				}
+				else
+				{
+					// a data block was lost, reset to the expected position
+					// and resume sending from there
+					FS_Seek(host_client->download_file, host_client->download_expectedposition, SEEK_SET);
+				}
+			}
+			break;
+
+		case clc_ackframe:
+			if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
+			num = MSG_ReadLong();
+			if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
+			if (developer_networkentities.integer >= 1)
+				Con_Printf("recv clc_ackframe %i\n", num);
+			// if the client hasn't progressed through signons yet,
+			// ignore any clc_ackframes we get (they're probably from the
+			// previous level)
+			if (host_client->spawned && host_client->latestframenum < num)
+			{
+				int i;
+				for (i = host_client->latestframenum + 1;i < num;i++)
+					SV_FrameLost(i);
+				SV_FrameAck(num);
+				host_client->latestframenum = num;
+			}
+			break;
 		}
 	}
 }