sv_user.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // sv_user.c -- server code for moving users
  21
  22 #include "quakedef.h"
  23
  24 cvar_t sv_edgefriction = {0, "edgefriction", "2", "how much you slow down when nearing a ledge you might fall off"};
  25 cvar_t sv_idealpitchscale = {0, "sv_idealpitchscale","0.8", "how much to look up/down slopes and stairs when not using freelook"};
  26 cvar_t sv_maxspeed = {CVAR_NOTIFY, "sv_maxspeed", "320", "maximum speed a player can accelerate to when on ground (can be exceeded by tricks)"};
  27 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)"};
  28 cvar_t sv_accelerate = {0, "sv_accelerate", "10", "rate at which a player accelerates to sv_maxspeed"};
  29 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"};
  30 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"};
  31 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"};
  32 cvar_t sv_clmovement_minping = {0, "sv_clmovement_minping", "100", "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)"};
  33 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)"};
  34
  35 static usercmd_t cmd;
  36
  37
  38 /*
  39 ===============
  40 SV_SetIdealPitch
  41 ===============
  42 */
  43 #define MAX_FORWARD     6
  44 void SV_SetIdealPitch (void)
  45 {
  46         float   angleval, sinval, cosval, step, dir;
  47         trace_t tr;
  48         vec3_t  top, bottom;
  49         float   z[MAX_FORWARD];
  50         int             i, j;
  51         int             steps;
  52
  53         if (!((int)host_client->edict->fields.server->flags & FL_ONGROUND))
  54                 return;
  55
  56         angleval = host_client->edict->fields.server->angles[YAW] * M_PI*2 / 360;
  57         sinval = sin(angleval);
  58         cosval = cos(angleval);
  59
  60         for (i=0 ; i<MAX_FORWARD ; i++)
  61         {
  62                 top[0] = host_client->edict->fields.server->origin[0] + cosval*(i+3)*12;
  63                 top[1] = host_client->edict->fields.server->origin[1] + sinval*(i+3)*12;
  64                 top[2] = host_client->edict->fields.server->origin[2] + host_client->edict->fields.server->view_ofs[2];
  65
  66                 bottom[0] = top[0];
  67                 bottom[1] = top[1];
  68                 bottom[2] = top[2] - 160;
  69
  70                 tr = SV_Move (top, vec3_origin, vec3_origin, bottom, MOVE_NOMONSTERS, host_client->edict);
  71                 // if looking at a wall, leave ideal the way is was
  72                 if (tr.startsolid)
  73                         return;
  74
  75                 // near a dropoff
  76                 if (tr.fraction == 1)
  77                         return;
  78
  79                 z[i] = top[2] + tr.fraction*(bottom[2]-top[2]);
  80         }
  81
  82         dir = 0;
  83         steps = 0;
  84         for (j=1 ; j<i ; j++)
  85         {
  86                 step = z[j] - z[j-1];
  87                 if (step > -ON_EPSILON && step < ON_EPSILON)
  88                         continue;
  89
  90                 // mixed changes
  91                 if (dir && ( step-dir > ON_EPSILON || step-dir < -ON_EPSILON ) )
  92                         return;
  93
  94                 steps++;
  95                 dir = step;
  96         }
  97
  98         if (!dir)
  99         {
 100                 host_client->edict->fields.server->idealpitch = 0;
 101                 return;
 102         }
 103
 104         if (steps < 2)
 105                 return;
 106         host_client->edict->fields.server->idealpitch = -dir * sv_idealpitchscale.value;
 107 }
 108
 109 static vec3_t wishdir, forward, right, up;
 110 static float wishspeed;
 111
 112 static qboolean onground;
 113
 114 /*
 115 ==================
 116 SV_UserFriction
 117
 118 ==================
 119 */
 120 void SV_UserFriction (void)
 121 {
 122         float speed, newspeed, control, friction;
 123         vec3_t start, stop;
 124         trace_t trace;
 125
 126         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]);
 127         if (!speed)
 128                 return;
 129
 130         // if the leading edge is over a dropoff, increase friction
 131         start[0] = stop[0] = host_client->edict->fields.server->origin[0] + host_client->edict->fields.server->velocity[0]/speed*16;
 132         start[1] = stop[1] = host_client->edict->fields.server->origin[1] + host_client->edict->fields.server->velocity[1]/speed*16;
 133         start[2] = host_client->edict->fields.server->origin[2] + host_client->edict->fields.server->mins[2];
 134         stop[2] = start[2] - 34;
 135
 136         trace = SV_Move (start, vec3_origin, vec3_origin, stop, MOVE_NOMONSTERS, host_client->edict);
 137
 138         if (trace.fraction == 1.0)
 139                 friction = sv_friction.value*sv_edgefriction.value;
 140         else
 141                 friction = sv_friction.value;
 142
 143         // apply friction
 144         control = speed < sv_stopspeed.value ? sv_stopspeed.value : speed;
 145         newspeed = speed - sv.frametime*control*friction;
 146
 147         if (newspeed < 0)
 148                 newspeed = 0;
 149         else
 150                 newspeed /= speed;
 151
 152         VectorScale(host_client->edict->fields.server->velocity, newspeed, host_client->edict->fields.server->velocity);
 153 }
 154
 155 /*
 156 ==============
 157 SV_Accelerate
 158 ==============
 159 */
 160 void SV_Accelerate (void)
 161 {
 162         int i;
 163         float addspeed, accelspeed, currentspeed;
 164
 165         currentspeed = DotProduct (host_client->edict->fields.server->velocity, wishdir);
 166         addspeed = wishspeed - currentspeed;
 167         if (addspeed <= 0)
 168                 return;
 169         accelspeed = sv_accelerate.value*sv.frametime*wishspeed;
 170         if (accelspeed > addspeed)
 171                 accelspeed = addspeed;
 172
 173         for (i=0 ; i<3 ; i++)
 174                 host_client->edict->fields.server->velocity[i] += accelspeed*wishdir[i];
 175 }
 176
 177 void SV_AirAccelerate (vec3_t wishveloc)
 178 {
 179         int i;
 180         float addspeed, wishspd, accelspeed, currentspeed;
 181
 182         wishspd = VectorNormalizeLength (wishveloc);
 183         if (wishspd > sv_maxairspeed.value)
 184                 wishspd = sv_maxairspeed.value;
 185         currentspeed = DotProduct (host_client->edict->fields.server->velocity, wishveloc);
 186         addspeed = wishspd - currentspeed;
 187         if (addspeed <= 0)
 188                 return;
 189         accelspeed = (sv_airaccelerate.value < 0 ? sv_accelerate.value : sv_airaccelerate.value)*wishspeed * sv.frametime;
 190         if (accelspeed > addspeed)
 191                 accelspeed = addspeed;
 192
 193         for (i=0 ; i<3 ; i++)
 194                 host_client->edict->fields.server->velocity[i] += accelspeed*wishveloc[i];
 195 }
 196
 197
 198 void DropPunchAngle (void)
 199 {
 200         float len;
 201         prvm_eval_t *val;
 202
 203         len = VectorNormalizeLength (host_client->edict->fields.server->punchangle);
 204
 205         len -= 10*sv.frametime;
 206         if (len < 0)
 207                 len = 0;
 208         VectorScale (host_client->edict->fields.server->punchangle, len, host_client->edict->fields.server->punchangle);
 209
 210         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_punchvector)))
 211         {
 212                 len = VectorNormalizeLength (val->vector);
 213
 214                 len -= 20*sv.frametime;
 215                 if (len < 0)
 216                         len = 0;
 217                 VectorScale (val->vector, len, val->vector);
 218         }
 219 }
 220
 221 /*
 222 ===================
 223 SV_FreeMove
 224 ===================
 225 */
 226 void SV_FreeMove (void)
 227 {
 228         int i;
 229         float wishspeed;
 230
 231         AngleVectors (host_client->edict->fields.server->v_angle, forward, right, up);
 232
 233         for (i = 0; i < 3; i++)
 234                 host_client->edict->fields.server->velocity[i] = forward[i] * cmd.forwardmove + right[i] * cmd.sidemove;
 235
 236         host_client->edict->fields.server->velocity[2] += cmd.upmove;
 237
 238         wishspeed = VectorLength(host_client->edict->fields.server->velocity);
 239         if (wishspeed > sv_maxspeed.value)
 240                 VectorScale(host_client->edict->fields.server->velocity, sv_maxspeed.value / wishspeed, host_client->edict->fields.server->velocity);
 241 }
 242
 243 /*
 244 ===================
 245 SV_WaterMove
 246
 247 ===================
 248 */
 249 void SV_WaterMove (void)
 250 {
 251         int i;
 252         vec3_t wishvel;
 253         float speed, newspeed, wishspeed, addspeed, accelspeed, temp;
 254
 255         // user intentions
 256         AngleVectors (host_client->edict->fields.server->v_angle, forward, right, up);
 257
 258         for (i=0 ; i<3 ; i++)
 259                 wishvel[i] = forward[i]*cmd.forwardmove + right[i]*cmd.sidemove;
 260
 261         if (!cmd.forwardmove && !cmd.sidemove && !cmd.upmove)
 262                 wishvel[2] -= 60;               // drift towards bottom
 263         else
 264                 wishvel[2] += cmd.upmove;
 265
 266         wishspeed = VectorLength(wishvel);
 267         if (wishspeed > sv_maxspeed.value)
 268         {
 269                 temp = sv_maxspeed.value/wishspeed;
 270                 VectorScale (wishvel, temp, wishvel);
 271                 wishspeed = sv_maxspeed.value;
 272         }
 273         wishspeed *= 0.7;
 274
 275         // water friction
 276         speed = VectorLength(host_client->edict->fields.server->velocity);
 277         if (speed)
 278         {
 279                 newspeed = speed - sv.frametime * speed * sv_waterfriction.value;
 280                 if (newspeed < 0)
 281                         newspeed = 0;
 282                 temp = newspeed/speed;
 283                 VectorScale(host_client->edict->fields.server->velocity, temp, host_client->edict->fields.server->velocity);
 284         }
 285         else
 286                 newspeed = 0;
 287
 288         // water acceleration
 289         if (!wishspeed)
 290                 return;
 291
 292         addspeed = wishspeed - newspeed;
 293         if (addspeed <= 0)
 294                 return;
 295
 296         VectorNormalize (wishvel);
 297         accelspeed = (sv_wateraccelerate.value < 0 ? sv_accelerate.value : sv_wateraccelerate.value) * wishspeed * sv.frametime;
 298         if (accelspeed > addspeed)
 299                 accelspeed = addspeed;
 300
 301         for (i=0 ; i<3 ; i++)
 302                 host_client->edict->fields.server->velocity[i] += accelspeed * wishvel[i];
 303 }
 304
 305 void SV_WaterJump (void)
 306 {
 307         if (sv.time > host_client->edict->fields.server->teleport_time || !host_client->edict->fields.server->waterlevel)
 308         {
 309                 host_client->edict->fields.server->flags = (int)host_client->edict->fields.server->flags & ~FL_WATERJUMP;
 310                 host_client->edict->fields.server->teleport_time = 0;
 311         }
 312         host_client->edict->fields.server->velocity[0] = host_client->edict->fields.server->movedir[0];
 313         host_client->edict->fields.server->velocity[1] = host_client->edict->fields.server->movedir[1];
 314 }
 315
 316
 317 /*
 318 ===================
 319 SV_AirMove
 320
 321 ===================
 322 */
 323 void SV_AirMove (void)
 324 {
 325         int i;
 326         vec3_t wishvel;
 327         float fmove, smove, temp;
 328
 329         // LordHavoc: correct quake movement speed bug when looking up/down
 330         wishvel[0] = wishvel[2] = 0;
 331         wishvel[1] = host_client->edict->fields.server->angles[1];
 332         AngleVectors (wishvel, forward, right, up);
 333
 334         fmove = cmd.forwardmove;
 335         smove = cmd.sidemove;
 336
 337 // hack to not let you back into teleporter
 338         if (sv.time < host_client->edict->fields.server->teleport_time && fmove < 0)
 339                 fmove = 0;
 340
 341         for (i=0 ; i<3 ; i++)
 342                 wishvel[i] = forward[i]*fmove + right[i]*smove;
 343
 344         if ((int)host_client->edict->fields.server->movetype != MOVETYPE_WALK)
 345                 wishvel[2] += cmd.upmove;
 346
 347         VectorCopy (wishvel, wishdir);
 348         wishspeed = VectorNormalizeLength(wishdir);
 349         if (wishspeed > sv_maxspeed.value)
 350         {
 351                 temp = sv_maxspeed.value/wishspeed;
 352                 VectorScale (wishvel, temp, wishvel);
 353                 wishspeed = sv_maxspeed.value;
 354         }
 355
 356         if (host_client->edict->fields.server->movetype == MOVETYPE_NOCLIP)
 357         {
 358                 // noclip
 359                 VectorCopy (wishvel, host_client->edict->fields.server->velocity);
 360         }
 361         else if (onground && (!sv_gameplayfix_qwplayerphysics.integer || !(host_client->edict->fields.server->button2 || !((int)host_client->edict->fields.server->flags & FL_JUMPRELEASED))))
 362         {
 363                 SV_UserFriction ();
 364                 SV_Accelerate ();
 365         }
 366         else
 367         {
 368                 // not on ground, so little effect on velocity
 369                 SV_AirAccelerate (wishvel);
 370         }
 371 }
 372
 373 /*
 374 ===================
 375 SV_ClientThink
 376
 377 the move fields specify an intended velocity in pix/sec
 378 the angle fields specify an exact angular motion in degrees
 379 ===================
 380 */
 381 void SV_ClientThink (void)
 382 {
 383         vec3_t v_angle;
 384
 385         if (host_client->edict->fields.server->movetype == MOVETYPE_NONE)
 386                 return;
 387
 388         onground = (int)host_client->edict->fields.server->flags & FL_ONGROUND;
 389
 390         DropPunchAngle ();
 391
 392         // if dead, behave differently
 393         if (host_client->edict->fields.server->health <= 0)
 394                 return;
 395
 396         cmd = host_client->cmd;
 397
 398         // angles
 399         // show 1/3 the pitch angle and all the roll angle
 400         VectorAdd (host_client->edict->fields.server->v_angle, host_client->edict->fields.server->punchangle, v_angle);
 401         host_client->edict->fields.server->angles[ROLL] = V_CalcRoll (host_client->edict->fields.server->angles, host_client->edict->fields.server->velocity)*4;
 402         if (!host_client->edict->fields.server->fixangle)
 403         {
 404                 host_client->edict->fields.server->angles[PITCH] = -v_angle[PITCH]/3;
 405                 host_client->edict->fields.server->angles[YAW] = v_angle[YAW];
 406         }
 407
 408         if ( (int)host_client->edict->fields.server->flags & FL_WATERJUMP )
 409         {
 410                 SV_WaterJump ();
 411                 return;
 412         }
 413
 414         /*
 415         // Player is (somehow) outside of the map, or flying, or noclipping
 416         if (host_client->edict->fields.server->movetype != MOVETYPE_NOCLIP && (host_client->edict->fields.server->movetype == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict)))
 417         //if (host_client->edict->fields.server->movetype == MOVETYPE_NOCLIP || host_client->edict->fields.server->movetype == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict))
 418         {
 419                 SV_FreeMove ();
 420                 return;
 421         }
 422         */
 423
 424         // walk
 425         if ((host_client->edict->fields.server->waterlevel >= 2) && (host_client->edict->fields.server->movetype != MOVETYPE_NOCLIP))
 426         {
 427                 SV_WaterMove ();
 428                 return;
 429         }
 430
 431         SV_AirMove ();
 432 }
 433
 434 /*
 435 ===================
 436 SV_ReadClientMove
 437 ===================
 438 */
 439 qboolean SV_ReadClientMove (void)
 440 {
 441         qboolean kickplayer = false;
 442         int i;
 443         double oldmovetime;
 444 #ifdef NUM_PING_TIMES
 445         double total;
 446 #endif
 447         usercmd_t *move = &host_client->cmd;
 448
 449         oldmovetime = move->time;
 450
 451         // if this move has been applied, clear it, and start accumulating new data
 452         if (move->applied)
 453                 memset(move, 0, sizeof(*move));
 454
 455         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 456
 457         // read ping time
 458         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)
 459                 move->sequence = MSG_ReadLong ();
 460         move->time = MSG_ReadFloat ();
 461         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 462         move->receivetime = sv.time;
 463
 464         // calculate average ping time
 465         host_client->ping = move->receivetime - move->time;
 466 #ifdef NUM_PING_TIMES
 467         host_client->ping_times[host_client->num_pings % NUM_PING_TIMES] = move->receivetime - move->time;
 468         host_client->num_pings++;
 469         for (i=0, total = 0;i < NUM_PING_TIMES;i++)
 470                 total += host_client->ping_times[i];
 471         host_client->ping = total / NUM_PING_TIMES;
 472 #endif
 473
 474         // read current angles
 475         for (i = 0;i < 3;i++)
 476         {
 477                 if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE)
 478                         move->viewangles[i] = MSG_ReadAngle8i();
 479                 else if (sv.protocol == PROTOCOL_DARKPLACES1)
 480                         move->viewangles[i] = MSG_ReadAngle16i();
 481                 else if (sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3)
 482                         move->viewangles[i] = MSG_ReadAngle32f();
 483                 else
 484                         move->viewangles[i] = MSG_ReadAngle16i();
 485         }
 486         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 487
 488         // read movement
 489         move->forwardmove = MSG_ReadCoord16i ();
 490         move->sidemove = MSG_ReadCoord16i ();
 491         move->upmove = MSG_ReadCoord16i ();
 492         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 493
 494         // read buttons
 495         // be sure to bitwise OR them into the move->buttons because we want to
 496         // accumulate button presses from multiple packets per actual move
 497         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)
 498                 move->buttons |= MSG_ReadByte ();
 499         else
 500                 move->buttons |= MSG_ReadLong ();
 501         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 502
 503         // read impulse
 504         i = MSG_ReadByte ();
 505         if (i)
 506                 move->impulse = i;
 507         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 508
 509         // PRYDON_CLIENTCURSOR
 510         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)
 511         {
 512                 // 30 bytes
 513                 move->cursor_screen[0] = MSG_ReadShort() * (1.0f / 32767.0f);
 514                 move->cursor_screen[1] = MSG_ReadShort() * (1.0f / 32767.0f);
 515                 move->cursor_start[0] = MSG_ReadFloat();
 516                 move->cursor_start[1] = MSG_ReadFloat();
 517                 move->cursor_start[2] = MSG_ReadFloat();
 518                 move->cursor_impact[0] = MSG_ReadFloat();
 519                 move->cursor_impact[1] = MSG_ReadFloat();
 520                 move->cursor_impact[2] = MSG_ReadFloat();
 521                 move->cursor_entitynumber = (unsigned short)MSG_ReadShort();
 522                 if (move->cursor_entitynumber >= prog->max_edicts)
 523                 {
 524                         Con_DPrintf("SV_ReadClientMessage: client send bad cursor_entitynumber\n");
 525                         move->cursor_entitynumber = 0;
 526                 }
 527                 // as requested by FrikaC, cursor_trace_ent is reset to world if the
 528                 // entity is free at time of receipt
 529                 if (PRVM_EDICT_NUM(move->cursor_entitynumber)->priv.server->free)
 530                         move->cursor_entitynumber = 0;
 531                 if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 532         }
 533
 534         // disable clientside movement prediction in some cases
 535         if (ceil((move->receivetime - move->time) * 1000.0) < sv_clmovement_minping.integer)
 536                 host_client->clmovement_disable_minpingtimeout = realtime + sv_clmovement_minping_disabletime.value / 1000.0;
 537         if (!sv_clmovement_enable.integer || host_client->clmovement_disable_minpingtimeout > realtime)
 538                 move->sequence = 0;
 539
 540         if (!host_client->spawned)
 541                 memset(move, 0, sizeof(*move));
 542         else if (move->sequence && (float)move->time > (float)sv.time + 0.125f) // add a little fuzz factor due to float precision issues
 543         {
 544                 Con_DPrintf("client move->time %f > sv.time %f, kicking\n", (float)move->time, (float)sv.time);
 545                 // if the client is lying about time, we have definitively detected a
 546                 // speed cheat attempt of the worst sort, and we can immediately kick
 547                 // the offending player off.
 548                 // this fixes the timestamp to prevent a speed cheat from working
 549                 move->time = sv.time;
 550                 // but we kick the player for good measure
 551                 kickplayer = true;
 552         }
 553         else
 554         {
 555                 // apply the latest accepted move to the entity fields
 556                 host_client->movesequence = move->sequence;
 557                 if (host_client->movesequence)
 558                 {
 559                         double frametime = bound(0, move->time - oldmovetime, 0.1);
 560                         double oldframetime = prog->globals.server->frametime;
 561                         //if (move->time - oldmovetime >= 0.1001)
 562                         //      Con_DPrintf("client move exceeds 100ms!  (time %f -> time %f)\n", oldmovetime, move->time);
 563                         prog->globals.server->frametime = frametime;
 564                         SV_Physics_ClientEntity(host_client->edict);
 565                         prog->globals.server->frametime = oldframetime;
 566                 }
 567         }
 568         return kickplayer;
 569 }
 570
 571 void SV_ApplyClientMove (void)
 572 {
 573         prvm_eval_t *val;
 574         usercmd_t *move = &host_client->cmd;
 575
 576         if (!move->receivetime)
 577                 return;
 578
 579         // note: a move can be applied multiple times if the client packets are
 580         // not coming as often as the physics is executed, and the move must be
 581         // applied before running qc each time because the id1 qc had a bug where
 582         // it clears self.button2 in PlayerJump, causing pogostick behavior if
 583         // moves are not applied every time before calling qc
 584         move->applied = true;
 585
 586         // set the edict fields
 587         host_client->edict->fields.server->button0 = move->buttons & 1;
 588         host_client->edict->fields.server->button2 = (move->buttons & 2)>>1;
 589         if (move->impulse)
 590                 host_client->edict->fields.server->impulse = move->impulse;
 591         // only send the impulse to qc once
 592         move->impulse = 0;
 593         VectorCopy(move->viewangles, host_client->edict->fields.server->v_angle);
 594         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button3))) val->_float = ((move->buttons >> 2) & 1);
 595         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button4))) val->_float = ((move->buttons >> 3) & 1);
 596         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button5))) val->_float = ((move->buttons >> 4) & 1);
 597         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button6))) val->_float = ((move->buttons >> 5) & 1);
 598         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button7))) val->_float = ((move->buttons >> 6) & 1);
 599         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button8))) val->_float = ((move->buttons >> 7) & 1);
 600         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button9))) val->_float = ((move->buttons >> 11) & 1);
 601         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button10))) val->_float = ((move->buttons >> 12) & 1);
 602         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button11))) val->_float = ((move->buttons >> 13) & 1);
 603         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button12))) val->_float = ((move->buttons >> 14) & 1);
 604         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button13))) val->_float = ((move->buttons >> 15) & 1);
 605         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button14))) val->_float = ((move->buttons >> 16) & 1);
 606         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button15))) val->_float = ((move->buttons >> 17) & 1);
 607         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button16))) val->_float = ((move->buttons >> 18) & 1);
 608         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_buttonuse))) val->_float = ((move->buttons >> 8) & 1);
 609         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_buttonchat))) val->_float = ((move->buttons >> 9) & 1);
 610         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_active))) val->_float = ((move->buttons >> 10) & 1);
 611         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_movement))) VectorSet(val->vector, move->forwardmove, move->sidemove, move->upmove);
 612         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_screen))) VectorCopy(move->cursor_screen, val->vector);
 613         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_trace_start))) VectorCopy(move->cursor_start, val->vector);
 614         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_trace_endpos))) VectorCopy(move->cursor_impact, val->vector);
 615         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_trace_ent))) val->edict = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM(move->cursor_entitynumber));
 616         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_ping))) val->_float = host_client->ping * 1000.0;
 617 }
 618
 619 void SV_FrameLost(int framenum)
 620 {
 621         if (host_client->entitydatabase5)
 622                 EntityFrame5_LostFrame(host_client->entitydatabase5, framenum);
 623 }
 624
 625 void SV_FrameAck(int framenum)
 626 {
 627         if (host_client->entitydatabase)
 628                 EntityFrame_AckFrame(host_client->entitydatabase, framenum);
 629         else if (host_client->entitydatabase4)
 630                 EntityFrame4_AckFrame(host_client->entitydatabase4, framenum, true);
 631         else if (host_client->entitydatabase5)
 632                 EntityFrame5_AckFrame(host_client->entitydatabase5, framenum);
 633 }
 634
 635 /*
 636 ===================
 637 SV_ReadClientMessage
 638 ===================
 639 */
 640 extern void SV_SendServerinfo(client_t *client);
 641 void SV_ReadClientMessage(void)
 642 {
 643         int cmd, num;
 644         char *s;
 645
 646         //MSG_BeginReading ();
 647
 648         for(;;)
 649         {
 650                 if (!host_client->active)
 651                 {
 652                         // a command caused an error
 653                         SV_DropClient (false);
 654                         return;
 655                 }
 656
 657                 if (msg_badread)
 658                 {
 659                         Con_Print("SV_ReadClientMessage: badread\n");
 660                         SV_DropClient (false);
 661                         return;
 662                 }
 663
 664                 cmd = MSG_ReadByte ();
 665                 if (cmd == -1)
 666                 {
 667                         // end of message
 668                         break;
 669                 }
 670
 671                 switch (cmd)
 672                 {
 673                 default:
 674                         Con_Printf("SV_ReadClientMessage: unknown command char %i\n", cmd);
 675                         SV_DropClient (false);
 676                         return;
 677
 678                 case clc_nop:
 679                         break;
 680
 681                 case clc_stringcmd:
 682                         s = MSG_ReadString ();
 683                         if (strncasecmp(s, "spawn", 5) == 0
 684                          || strncasecmp(s, "begin", 5) == 0
 685                          || strncasecmp(s, "prespawn", 8) == 0)
 686                                 Cmd_ExecuteString (s, src_client);
 687                         else if (SV_ParseClientCommandQC)
 688                         {
 689                                 PRVM_G_INT(OFS_PARM0) = PRVM_SetEngineString(s);
 690                                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 691                                 PRVM_ExecuteProgram ((func_t)(SV_ParseClientCommandQC - prog->functions), "QC function SV_ParseClientCommand is missing");
 692                         }
 693                         else if (strncasecmp(s, "status", 6) == 0
 694                          || strncasecmp(s, "name", 4) == 0
 695                          || strncasecmp(s, "say", 3) == 0
 696                          || strncasecmp(s, "say_team", 8) == 0
 697                          || strncasecmp(s, "tell", 4) == 0
 698                          || strncasecmp(s, "color", 5) == 0
 699                          || strncasecmp(s, "kill", 4) == 0
 700                          || strncasecmp(s, "pause", 5) == 0
 701                          || strncasecmp(s, "kick", 4) == 0
 702                          || strncasecmp(s, "ping", 4) == 0
 703                          || strncasecmp(s, "ban", 3) == 0
 704                          || strncasecmp(s, "pmodel", 6) == 0
 705                          || strncasecmp(s, "rate", 4) == 0
 706                          || strncasecmp(s, "playermodel", 11) == 0
 707                          || strncasecmp(s, "playerskin", 10) == 0
 708                          || (gamemode == GAME_NEHAHRA && (strncasecmp(s, "max", 3) == 0 || strncasecmp(s, "monster", 7) == 0 || strncasecmp(s, "scrag", 5) == 0 || strncasecmp(s, "gimme", 5) == 0 || strncasecmp(s, "wraith", 6) == 0))
 709                          || (gamemode != GAME_NEHAHRA && (strncasecmp(s, "god", 3) == 0 || strncasecmp(s, "notarget", 8) == 0 || strncasecmp(s, "fly", 3) == 0 || strncasecmp(s, "give", 4) == 0 || strncasecmp(s, "noclip", 6) == 0)))
 710                                 Cmd_ExecuteString (s, src_client);
 711                         else
 712                                 Con_Printf("%s tried to %s\n", host_client->name, s);
 713                         break;
 714
 715                 case clc_disconnect:
 716                         SV_DropClient (false); // client wants to disconnect
 717                         return;
 718
 719                 case clc_move:
 720                         // if ReadClientMove returns true, the client tried to speed cheat
 721                         if (SV_ReadClientMove ())
 722                                 SV_DropClient (false);
 723                         break;
 724
 725                 case clc_ackframe:
 726                         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 727                         num = MSG_ReadLong();
 728                         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 729                         if (developer_networkentities.integer >= 1)
 730                                 Con_Printf("recv clc_ackframe %i\n", num);
 731                         // if the client hasn't progressed through signons yet,
 732                         // ignore any clc_ackframes we get (they're probably from the
 733                         // previous level)
 734                         if (host_client->spawned && host_client->latestframenum < num)
 735                         {
 736                                 int i;
 737                                 for (i = host_client->latestframenum + 1;i < num;i++)
 738                                         SV_FrameLost(i);
 739                                 SV_FrameAck(num);
 740                                 host_client->latestframenum = num;
 741                         }
 742                         break;
 743                 }
 744         }
 745 }
 746