quakeforge/nq/source/sv_user.c

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/*
sv_user.c
@description@
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] =
"$Id$";
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include "QF/cbuf.h"
#include "QF/console.h"
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/keys.h"
#include "QF/msg.h"
#include "QF/sys.h"
#include "host.h"
#include "server.h"
#include "sv_progs.h"
#include "view.h"
#include "world.h"
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extern cvar_t *cl_rollangle; //FIXME
extern cvar_t *cl_rollspeed; //FIXME
edict_t *sv_player;
cvar_t *sv_edgefriction;
vec3_t forward, right, up;
vec3_t wishdir;
float wishspeed;
// world
float *angles;
float *origin;
float *velocity;
qboolean onground;
usercmd_t cmd;
cvar_t *sv_idealpitchscale;
#define MAX_FORWARD 6
void
SV_SetIdealPitch (void)
{
int dir, step, steps, i, j;
float angleval, sinval, cosval;
float z[MAX_FORWARD];
trace_t tr;
vec3_t top, bottom;
if (!((int) SVfloat (sv_player, flags) & FL_ONGROUND))
return;
angleval = SVvector (sv_player, angles)[YAW] * M_PI * 2 / 360;
sinval = sin (angleval);
cosval = cos (angleval);
for (i = 0; i < MAX_FORWARD; i++) {
top[0] = SVvector (sv_player, origin)[0] + cosval * (i + 3) * 12;
top[1] = SVvector (sv_player, origin)[1] + sinval * (i + 3) * 12;
top[2] = SVvector (sv_player, origin)[2] + SVvector (sv_player,
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, 1, sv_player);
if (tr.allsolid)
return; // looking at a wall, leave ideal the
// way it was
if (tr.fraction == 1)
return; // near a dropoff
z[i] = top[2] + tr.fraction * (bottom[2] - top[2]);
}
dir = 0;
steps = 0;
for (j = 1; j < i; j++) {
step = z[j] - z[j - 1];
if (step > -ON_EPSILON && step < ON_EPSILON)
continue;
if (dir && (step - dir > ON_EPSILON || step - dir < -ON_EPSILON))
return; // mixed changes
steps++;
dir = step;
}
if (!dir) {
SVfloat (sv_player, idealpitch) = 0;
return;
}
if (steps < 2)
return;
SVfloat (sv_player, idealpitch) = -dir * sv_idealpitchscale->value;
}
static void
SV_UserFriction (void)
{
float *vel;
float control, friction, speed, newspeed;
vec3_t start, stop;
trace_t trace;
vel = velocity;
speed = sqrt (vel[0] * vel[0] + vel[1] * vel[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] + SVvector (sv_player, mins)[2];
stop[2] = start[2] - 34;
trace = SV_Move (start, vec3_origin, vec3_origin, stop, true, sv_player);
if (trace.fraction == 1.0)
friction = sv_friction->value * sv_edgefriction->value;
else
friction = sv_friction->value;
// apply friction
control = speed < sv_stopspeed->value ? sv_stopspeed->value : speed;
newspeed = speed - host_frametime * control * friction;
if (newspeed < 0)
newspeed = 0;
newspeed /= speed;
vel[0] = vel[0] * newspeed;
vel[1] = vel[1] * newspeed;
vel[2] = vel[2] * newspeed;
}
cvar_t *sv_maxspeed;
cvar_t *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 * host_frametime * addspeed;
if (accelspeed > addspeed)
accelspeed = addspeed;
for (i = 0; i < 3; i++)
velocity[i] += accelspeed * pushvec[i];
}
#endif
static void
SV_Accelerate (void)
{
int i;
float addspeed, accelspeed, currentspeed;
currentspeed = DotProduct (velocity, wishdir);
addspeed = wishspeed - currentspeed;
if (addspeed <= 0)
return;
accelspeed = sv_accelerate->value * host_frametime * wishspeed;
if (accelspeed > addspeed)
accelspeed = addspeed;
for (i = 0; i < 3; i++)
velocity[i] += accelspeed * wishdir[i];
}
static void
SV_AirAccelerate (vec3_t wishveloc)
{
int i;
float addspeed, wishspd, accelspeed, currentspeed;
wishspd = VectorNormalize (wishveloc);
if (wishspd > 30)
wishspd = 30;
currentspeed = DotProduct (velocity, wishveloc);
addspeed = wishspd - currentspeed;
if (addspeed <= 0)
return;
// accelspeed = sv_accelerate->value * host_frametime;
accelspeed = sv_accelerate->value * wishspeed * host_frametime;
if (accelspeed > addspeed)
accelspeed = addspeed;
for (i = 0; i < 3; i++)
velocity[i] += accelspeed * wishveloc[i];
}
static void
DropPunchAngle (void)
{
float len;
len = VectorNormalize (SVvector (sv_player, punchangle));
len -= 10 * host_frametime;
if (len < 0)
len = 0;
VectorScale (SVvector (sv_player, punchangle), len, SVvector (sv_player,
punchangle));
}
static void
SV_WaterMove (void)
{
int i;
float speed, newspeed, wishspeed, addspeed, accelspeed;
vec3_t wishvel;
// user intentions
AngleVectors (SVvector (sv_player, v_angle), forward, right, up);
for (i = 0; i < 3; i++)
wishvel[i] = forward[i] * cmd.forwardmove + right[i] * cmd.sidemove;
if (!cmd.forwardmove && !cmd.sidemove && !cmd.upmove)
wishvel[2] -= 60; // drift towards bottom
else
wishvel[2] += cmd.upmove;
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wishspeed = VectorLength (wishvel);
if (wishspeed > sv_maxspeed->value) {
VectorScale (wishvel, sv_maxspeed->value / wishspeed, wishvel);
wishspeed = sv_maxspeed->value;
}
wishspeed *= 0.7;
// water friction
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speed = VectorLength (velocity);
if (speed) {
newspeed = speed - host_frametime * speed * sv_friction->value;
if (newspeed < 0)
newspeed = 0;
VectorScale (velocity, newspeed / speed, velocity);
} else
newspeed = 0;
// water acceleration
if (!wishspeed)
return;
addspeed = wishspeed - newspeed;
if (addspeed <= 0)
return;
VectorNormalize (wishvel);
accelspeed = sv_accelerate->value * wishspeed * host_frametime;
if (accelspeed > addspeed)
accelspeed = addspeed;
for (i = 0; i < 3; i++)
velocity[i] += accelspeed * wishvel[i];
}
static void
SV_WaterJump (void)
{
if (sv.time > SVfloat (sv_player, teleport_time) ||
!SVfloat (sv_player, waterlevel)) {
SVfloat (sv_player, flags) = (int) SVfloat (sv_player, flags) &
~FL_WATERJUMP;
SVfloat (sv_player, teleport_time) = 0;
}
SVvector (sv_player, velocity)[0] = SVvector (sv_player, movedir)[0];
SVvector (sv_player, velocity)[1] = SVvector (sv_player, movedir)[1];
}
static void
SV_AirMove (void)
{
int i;
float fmove, smove;
vec3_t wishvel;
AngleVectors (SVvector (sv_player, angles), forward, right, up);
fmove = cmd.forwardmove;
smove = cmd.sidemove;
// hack to not let you back into teleporter
if (sv.time < SVfloat (sv_player, teleport_time) && fmove < 0)
fmove = 0;
for (i = 0; i < 3; i++)
wishvel[i] = forward[i] * fmove + right[i] * smove;
if ((int) SVfloat (sv_player, movetype) != MOVETYPE_WALK)
wishvel[2] = cmd.upmove;
else
wishvel[2] = 0;
VectorCopy (wishvel, wishdir);
wishspeed = VectorNormalize (wishdir);
if (wishspeed > sv_maxspeed->value) {
VectorScale (wishvel, sv_maxspeed->value / wishspeed, wishvel);
wishspeed = sv_maxspeed->value;
}
if (SVfloat (sv_player, movetype) == MOVETYPE_NOCLIP) { // noclip
VectorCopy (wishvel, velocity);
} else if (onground) {
SV_UserFriction ();
SV_Accelerate ();
} else { // not on ground, so little effect on velocity
SV_AirAccelerate (wishvel);
}
}
/*
SV_ClientThink
the move fields specify an intended velocity in pix/sec
the angle fields specify an exact angular motion in degrees
*/
void
SV_ClientThink (void)
{
vec3_t v_angle;
if (SVfloat (sv_player, movetype) == MOVETYPE_NONE)
return;
onground = (int) SVfloat (sv_player, flags) & FL_ONGROUND;
origin = SVvector (sv_player, origin);
velocity = SVvector (sv_player, velocity);
DropPunchAngle ();
// if dead, behave differently
if (SVfloat (sv_player, health) <= 0)
return;
// angles
// show 1/3 the pitch angle and all the roll angle
cmd = host_client->cmd;
angles = SVvector (sv_player, angles);
VectorAdd (SVvector (sv_player, v_angle), SVvector (sv_player,
punchangle), v_angle);
angles[ROLL] = V_CalcRoll (SVvector (sv_player, angles),
SVvector (sv_player, velocity)) * 4;
if (!SVfloat (sv_player, fixangle)) {
angles[PITCH] = -v_angle[PITCH] / 3;
angles[YAW] = v_angle[YAW];
}
if ((int) SVfloat (sv_player, flags) & FL_WATERJUMP) {
SV_WaterJump ();
return;
}
// walk
if ((SVfloat (sv_player, waterlevel) >= 2)
&& (SVfloat (sv_player, movetype) != MOVETYPE_NOCLIP)) {
SV_WaterMove ();
return;
}
SV_AirMove ();
}
static void
SV_ReadClientMove (usercmd_t *move)
{
int i, bits;
vec3_t angle;
// read ping time
host_client->ping_times[host_client->num_pings % NUM_PING_TIMES]
= sv.time - MSG_ReadFloat (net_message);
host_client->num_pings++;
// read current angles
MSG_ReadAngleV (net_message, angle);
VectorCopy (angle, SVvector (host_client->edict, v_angle));
// read movement
move->forwardmove = MSG_ReadShort (net_message);
move->sidemove = MSG_ReadShort (net_message);
move->upmove = MSG_ReadShort (net_message);
// read buttons
bits = MSG_ReadByte (net_message);
SVfloat (host_client->edict, button0) = bits & 1;
SVfloat (host_client->edict, button2) = (bits & 2) >> 1;
i = MSG_ReadByte (net_message);
if (i)
SVfloat (host_client->edict, impulse) = i;
}
/*
SV_ReadClientMessage
Returns false if the client should be killed
*/
static qboolean
SV_ReadClientMessage (void)
{
int cmd, ret;
const char *s;
do {
nextmsg:
ret = NET_GetMessage (host_client->netconnection);
if (ret == -1) {
Con_Printf ("SV_ReadClientMessage: NET_GetMessage failed\n");
return false;
}
if (!ret)
return true;
MSG_BeginReading (net_message);
while (1) {
if (!host_client->active)
return false; // a command caused an error
if (net_message->badread) {
Con_Printf ("SV_ReadClientMessage: badread\n");
return false;
}
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cmd = MSG_ReadByte (net_message);
switch (cmd) {
case -1:
goto nextmsg; // end of message
default:
Con_Printf ("SV_ReadClientMessage: unknown command char\n");
return false;
case clc_nop:
break;
case clc_stringcmd:
s = MSG_ReadString (net_message);
if (host_client->privileged)
ret = 2;
else
ret = 0;
if (strncasecmp (s, "status", 6) == 0)
ret = 1;
else if (strncasecmp (s, "god", 3) == 0)
ret = 1;
else if (strncasecmp (s, "notarget", 8) == 0)
ret = 1;
else if (strncasecmp (s, "fly", 3) == 0)
ret = 1;
else if (strncasecmp (s, "name", 4) == 0)
ret = 1;
else if (strncasecmp (s, "noclip", 6) == 0)
ret = 1;
else if (strncasecmp (s, "say", 3) == 0)
ret = 1;
else if (strncasecmp (s, "say_team", 8) == 0)
ret = 1;
else if (strncasecmp (s, "tell", 4) == 0)
ret = 1;
else if (strncasecmp (s, "color", 5) == 0)
ret = 1;
else if (strncasecmp (s, "kill", 4) == 0)
ret = 1;
else if (strncasecmp (s, "pause", 5) == 0)
ret = 1;
else if (strncasecmp (s, "spawn", 5) == 0)
ret = 1;
else if (strncasecmp (s, "begin", 5) == 0)
ret = 1;
else if (strncasecmp (s, "prespawn", 8) == 0)
ret = 1;
else if (strncasecmp (s, "kick", 4) == 0)
ret = 1;
else if (strncasecmp (s, "ping", 4) == 0)
ret = 1;
else if (strncasecmp (s, "give", 4) == 0)
ret = 1;
else if (strncasecmp (s, "ban", 3) == 0)
ret = 1;
if (ret == 2)
Cbuf_InsertText (host_cbuf, 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:
return false;
case clc_move:
SV_ReadClientMove (&host_client->cmd);
break;
}
}
} while (ret == 1);
return true;
}
void
SV_RunClients (void)
{
int i;
for (i = 0, host_client = svs.clients; i < svs.maxclients;
i++, host_client++) {
if (!host_client->active)
continue;
sv_player = host_client->edict;
if (!SV_ReadClientMessage ()) {
SV_DropClient (false); // client misbehaved...
continue;
}
if (!host_client->spawned) {
// clear client movement until a new packet is received
memset (&host_client->cmd, 0, sizeof (host_client->cmd));
continue;
}
// always pause in single player if in console or menus
if (!sv.paused && (svs.maxclients > 1 || key_dest == key_game))
SV_ClientThink ();
}
}
/*
V_CalcRoll
Used by view and sv_user
*/
float
V_CalcRoll (const vec3_t angles, const vec3_t velocity)
{
float side, sign, value;
AngleVectors (angles, forward, right, up);
side = DotProduct (velocity, right);
sign = side < 0 ? -1 : 1;
side = fabs (side);
value = cl_rollangle->value;
// if (cl.inwater)
// value *= 6;
if (side < cl_rollspeed->value)
side = side * value / cl_rollspeed->value;
else
side = value;
return side * sign;
}