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"};
  25 cvar_t sv_deltacompress = {0, "sv_deltacompress", "1"};
  26 cvar_t sv_idealpitchscale = {0, "sv_idealpitchscale","0.8"};
  27 cvar_t sv_maxspeed = {CVAR_NOTIFY, "sv_maxspeed", "320"};
  28 cvar_t sv_accelerate = {0, "sv_accelerate", "10"};
  29
  30 static usercmd_t cmd;
  31
  32
  33 /*
  34 ===============
  35 SV_SetIdealPitch
  36 ===============
  37 */
  38 #define MAX_FORWARD     6
  39 void SV_SetIdealPitch (void)
  40 {
  41         float   angleval, sinval, cosval;
  42         trace_t tr;
  43         vec3_t  top, bottom;
  44         float   z[MAX_FORWARD];
  45         int             i, j;
  46         int             step, dir, steps;
  47
  48         if (!((int)host_client->edict->v->flags & FL_ONGROUND))
  49                 return;
  50
  51         angleval = host_client->edict->v->angles[YAW] * M_PI*2 / 360;
  52         sinval = sin(angleval);
  53         cosval = cos(angleval);
  54
  55         for (i=0 ; i<MAX_FORWARD ; i++)
  56         {
  57                 top[0] = host_client->edict->v->origin[0] + cosval*(i+3)*12;
  58                 top[1] = host_client->edict->v->origin[1] + sinval*(i+3)*12;
  59                 top[2] = host_client->edict->v->origin[2] + host_client->edict->v->view_ofs[2];
  60
  61                 bottom[0] = top[0];
  62                 bottom[1] = top[1];
  63                 bottom[2] = top[2] - 160;
  64
  65                 tr = SV_Move (top, vec3_origin, vec3_origin, bottom, MOVE_NOMONSTERS, host_client->edict);
  66                 // if looking at a wall, leave ideal the way is was
  67                 if (tr.startsolid)
  68                         return;
  69
  70                 // near a dropoff
  71                 if (tr.fraction == 1)
  72                         return;
  73
  74                 z[i] = top[2] + tr.fraction*(bottom[2]-top[2]);
  75         }
  76
  77         dir = 0;
  78         steps = 0;
  79         for (j=1 ; j<i ; j++)
  80         {
  81                 step = z[j] - z[j-1];
  82                 if (step > -ON_EPSILON && step < ON_EPSILON)
  83                         continue;
  84
  85                 // mixed changes
  86                 if (dir && ( step-dir > ON_EPSILON || step-dir < -ON_EPSILON ) )
  87                         return;
  88
  89                 steps++;
  90                 dir = step;
  91         }
  92
  93         if (!dir)
  94         {
  95                 host_client->edict->v->idealpitch = 0;
  96                 return;
  97         }
  98
  99         if (steps < 2)
 100                 return;
 101         host_client->edict->v->idealpitch = -dir * sv_idealpitchscale.value;
 102 }
 103
 104 #if 1
 105 static vec3_t wishdir, forward, right, up;
 106 static float wishspeed;
 107
 108 static qboolean onground;
 109
 110 /*
 111 ==================
 112 SV_UserFriction
 113
 114 ==================
 115 */
 116 void SV_UserFriction (void)
 117 {
 118         float speed, newspeed, control, friction;
 119         vec3_t start, stop;
 120         trace_t trace;
 121
 122         speed = sqrt(host_client->edict->v->velocity[0]*host_client->edict->v->velocity[0]+host_client->edict->v->velocity[1]*host_client->edict->v->velocity[1]);
 123         if (!speed)
 124                 return;
 125
 126         // if the leading edge is over a dropoff, increase friction
 127         start[0] = stop[0] = host_client->edict->v->origin[0] + host_client->edict->v->velocity[0]/speed*16;
 128         start[1] = stop[1] = host_client->edict->v->origin[1] + host_client->edict->v->velocity[1]/speed*16;
 129         start[2] = host_client->edict->v->origin[2] + host_client->edict->v->mins[2];
 130         stop[2] = start[2] - 34;
 131
 132         trace = SV_Move (start, vec3_origin, vec3_origin, stop, MOVE_NOMONSTERS, host_client->edict);
 133
 134         if (trace.fraction == 1.0)
 135                 friction = sv_friction.value*sv_edgefriction.value;
 136         else
 137                 friction = sv_friction.value;
 138
 139         // apply friction
 140         control = speed < sv_stopspeed.value ? sv_stopspeed.value : speed;
 141         newspeed = speed - sv.frametime*control*friction;
 142
 143         if (newspeed < 0)
 144                 newspeed = 0;
 145         else
 146                 newspeed /= speed;
 147
 148         VectorScale(host_client->edict->v->velocity, newspeed, host_client->edict->v->velocity);
 149 }
 150
 151 /*
 152 ==============
 153 SV_Accelerate
 154 ==============
 155 */
 156 void SV_Accelerate (void)
 157 {
 158         int i;
 159         float addspeed, accelspeed, currentspeed;
 160
 161         currentspeed = DotProduct (host_client->edict->v->velocity, wishdir);
 162         addspeed = wishspeed - currentspeed;
 163         if (addspeed <= 0)
 164                 return;
 165         accelspeed = sv_accelerate.value*sv.frametime*wishspeed;
 166         if (accelspeed > addspeed)
 167                 accelspeed = addspeed;
 168
 169         for (i=0 ; i<3 ; i++)
 170                 host_client->edict->v->velocity[i] += accelspeed*wishdir[i];
 171 }
 172
 173 void SV_AirAccelerate (vec3_t wishveloc)
 174 {
 175         int i;
 176         float addspeed, wishspd, accelspeed, currentspeed;
 177
 178         wishspd = VectorNormalizeLength (wishveloc);
 179         if (wishspd > 30)
 180                 wishspd = 30;
 181         currentspeed = DotProduct (host_client->edict->v->velocity, wishveloc);
 182         addspeed = wishspd - currentspeed;
 183         if (addspeed <= 0)
 184                 return;
 185         accelspeed = sv_accelerate.value*wishspeed * sv.frametime;
 186         if (accelspeed > addspeed)
 187                 accelspeed = addspeed;
 188
 189         for (i=0 ; i<3 ; i++)
 190                 host_client->edict->v->velocity[i] += accelspeed*wishveloc[i];
 191 }
 192
 193
 194 void DropPunchAngle (void)
 195 {
 196         float len;
 197         eval_t *val;
 198
 199         len = VectorNormalizeLength (host_client->edict->v->punchangle);
 200
 201         len -= 10*sv.frametime;
 202         if (len < 0)
 203                 len = 0;
 204         VectorScale (host_client->edict->v->punchangle, len, host_client->edict->v->punchangle);
 205
 206         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_punchvector)))
 207         {
 208                 len = VectorNormalizeLength (val->vector);
 209
 210                 len -= 20*sv.frametime;
 211                 if (len < 0)
 212                         len = 0;
 213                 VectorScale (val->vector, len, val->vector);
 214         }
 215 }
 216
 217 /*
 218 ===================
 219 SV_FreeMove
 220 ===================
 221 */
 222 void SV_FreeMove (void)
 223 {
 224         int i;
 225         float wishspeed;
 226
 227         AngleVectors (host_client->edict->v->v_angle, forward, right, up);
 228
 229         for (i = 0; i < 3; i++)
 230                 host_client->edict->v->velocity[i] = forward[i] * cmd.forwardmove + right[i] * cmd.sidemove;
 231
 232         host_client->edict->v->velocity[2] += cmd.upmove;
 233
 234         wishspeed = VectorLength(host_client->edict->v->velocity);
 235         if (wishspeed > sv_maxspeed.value)
 236                 VectorScale(host_client->edict->v->velocity, sv_maxspeed.value / wishspeed, host_client->edict->v->velocity);
 237 }
 238
 239 /*
 240 ===================
 241 SV_WaterMove
 242
 243 ===================
 244 */
 245 void SV_WaterMove (void)
 246 {
 247         int i;
 248         vec3_t wishvel;
 249         float speed, newspeed, wishspeed, addspeed, accelspeed, temp;
 250
 251         // user intentions
 252         AngleVectors (host_client->edict->v->v_angle, forward, right, up);
 253
 254         for (i=0 ; i<3 ; i++)
 255                 wishvel[i] = forward[i]*cmd.forwardmove + right[i]*cmd.sidemove;
 256
 257         if (!cmd.forwardmove && !cmd.sidemove && !cmd.upmove)
 258                 wishvel[2] -= 60;               // drift towards bottom
 259         else
 260                 wishvel[2] += cmd.upmove;
 261
 262         wishspeed = VectorLength(wishvel);
 263         if (wishspeed > sv_maxspeed.value)
 264         {
 265                 temp = sv_maxspeed.value/wishspeed;
 266                 VectorScale (wishvel, temp, wishvel);
 267                 wishspeed = sv_maxspeed.value;
 268         }
 269         wishspeed *= 0.7;
 270
 271         // water friction
 272         speed = VectorLength(host_client->edict->v->velocity);
 273         if (speed)
 274         {
 275                 newspeed = speed - sv.frametime * speed * sv_friction.value;
 276                 if (newspeed < 0)
 277                         newspeed = 0;
 278                 temp = newspeed/speed;
 279                 VectorScale(host_client->edict->v->velocity, temp, host_client->edict->v->velocity);
 280         }
 281         else
 282                 newspeed = 0;
 283
 284         // water acceleration
 285         if (!wishspeed)
 286                 return;
 287
 288         addspeed = wishspeed - newspeed;
 289         if (addspeed <= 0)
 290                 return;
 291
 292         VectorNormalize (wishvel);
 293         accelspeed = sv_accelerate.value * wishspeed * sv.frametime;
 294         if (accelspeed > addspeed)
 295                 accelspeed = addspeed;
 296
 297         for (i=0 ; i<3 ; i++)
 298                 host_client->edict->v->velocity[i] += accelspeed * wishvel[i];
 299 }
 300
 301 void SV_WaterJump (void)
 302 {
 303         if (sv.time > host_client->edict->v->teleport_time || !host_client->edict->v->waterlevel)
 304         {
 305                 host_client->edict->v->flags = (int)host_client->edict->v->flags & ~FL_WATERJUMP;
 306                 host_client->edict->v->teleport_time = 0;
 307         }
 308         host_client->edict->v->velocity[0] = host_client->edict->v->movedir[0];
 309         host_client->edict->v->velocity[1] = host_client->edict->v->movedir[1];
 310 }
 311
 312
 313 /*
 314 ===================
 315 SV_AirMove
 316
 317 ===================
 318 */
 319 void SV_AirMove (void)
 320 {
 321         int i;
 322         vec3_t wishvel;
 323         float fmove, smove, temp;
 324
 325         // LordHavoc: correct quake movement speed bug when looking up/down
 326         wishvel[0] = wishvel[2] = 0;
 327         wishvel[1] = host_client->edict->v->angles[1];
 328         AngleVectors (wishvel, forward, right, up);
 329
 330         fmove = cmd.forwardmove;
 331         smove = cmd.sidemove;
 332
 333 // hack to not let you back into teleporter
 334         if (sv.time < host_client->edict->v->teleport_time && fmove < 0)
 335                 fmove = 0;
 336
 337         for (i=0 ; i<3 ; i++)
 338                 wishvel[i] = forward[i]*fmove + right[i]*smove;
 339
 340         if ((int)host_client->edict->v->movetype != MOVETYPE_WALK)
 341                 wishvel[2] += cmd.upmove;
 342
 343         VectorCopy (wishvel, wishdir);
 344         wishspeed = VectorNormalizeLength(wishdir);
 345         if (wishspeed > sv_maxspeed.value)
 346         {
 347                 temp = sv_maxspeed.value/wishspeed;
 348                 VectorScale (wishvel, temp, wishvel);
 349                 wishspeed = sv_maxspeed.value;
 350         }
 351
 352         if (host_client->edict->v->movetype == MOVETYPE_NOCLIP)
 353         {
 354                 // noclip
 355                 VectorCopy (wishvel, host_client->edict->v->velocity);
 356         }
 357         else if ( onground )
 358         {
 359                 SV_UserFriction ();
 360                 SV_Accelerate ();
 361         }
 362         else
 363         {
 364                 // not on ground, so little effect on velocity
 365                 SV_AirAccelerate (wishvel);
 366         }
 367 }
 368
 369 /*
 370 ===================
 371 SV_ClientThink
 372
 373 the move fields specify an intended velocity in pix/sec
 374 the angle fields specify an exact angular motion in degrees
 375 ===================
 376 */
 377 void SV_ClientThink (void)
 378 {
 379         vec3_t v_angle;
 380
 381         if (host_client->edict->v->movetype == MOVETYPE_NONE)
 382                 return;
 383
 384         onground = (int)host_client->edict->v->flags & FL_ONGROUND;
 385
 386         DropPunchAngle ();
 387
 388         // if dead, behave differently
 389         if (host_client->edict->v->health <= 0)
 390                 return;
 391
 392         cmd = host_client->cmd;
 393
 394         // angles
 395         // show 1/3 the pitch angle and all the roll angle
 396         VectorAdd (host_client->edict->v->v_angle, host_client->edict->v->punchangle, v_angle);
 397         host_client->edict->v->angles[ROLL] = V_CalcRoll (host_client->edict->v->angles, host_client->edict->v->velocity)*4;
 398         if (!host_client->edict->v->fixangle)
 399         {
 400                 host_client->edict->v->angles[PITCH] = -v_angle[PITCH]/3;
 401                 host_client->edict->v->angles[YAW] = v_angle[YAW];
 402         }
 403
 404         if ( (int)host_client->edict->v->flags & FL_WATERJUMP )
 405         {
 406                 SV_WaterJump ();
 407                 return;
 408         }
 409
 410         /*
 411         // Player is (somehow) outside of the map, or flying, or noclipping
 412         if (host_client->edict->v->movetype != MOVETYPE_NOCLIP && (host_client->edict->v->movetype == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict)))
 413         //if (host_client->edict->v->movetype == MOVETYPE_NOCLIP || host_client->edict->v->movetype == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict))
 414         {
 415                 SV_FreeMove ();
 416                 return;
 417         }
 418         */
 419
 420         // walk
 421         if ((host_client->edict->v->waterlevel >= 2) && (host_client->edict->v->movetype != MOVETYPE_NOCLIP))
 422         {
 423                 SV_WaterMove ();
 424                 return;
 425         }
 426
 427         SV_AirMove ();
 428 }
 429
 430 #else
 431
 432 extern cvar_t cl_rollspeed;
 433 extern cvar_t cl_rollangle;
 434 void SV_ClientThink(void)
 435 {
 436         int j;
 437         vec3_t wishvel, wishdir, v, v_forward, v_right, v_up, start, stop;
 438         float wishspeed, f, limit;
 439         trace_t trace;
 440
 441         if (host_client->edict->v->movetype == MOVETYPE_NONE)
 442                 return;
 443
 444         f = DotProduct(host_client->edict->v->punchangle, host_client->edict->v->punchangle);
 445         if (f)
 446         {
 447                 limit = sqrt(f);
 448                 f = (limit - 10 * sv.frametime);
 449                 f /= limit;
 450                 f = max(0, f);
 451                 VectorScale(host_client->edict->v->punchangle, f, host_client->edict->v->punchangle);
 452         }
 453
 454         // if dead, behave differently
 455         if (host_client->edict->v->health <= 0)
 456                 return;
 457
 458         AngleVectors(host_client->edict->v->v_angle, v_forward, v_right, v_up);
 459         // show 1/3 the pitch angle and all the roll angle
 460         f = DotProduct(host_client->edict->v->velocity, v_right) * (1.0 / cl_rollspeed.value);
 461         host_client->edict->v->angles[2] = bound(-1, f, 1) * cl_rollangle.value * 4;
 462         if (!host_client->edict->v->fixangle)
 463         {
 464                 host_client->edict->v->angles[0] = (host_client->edict->v->v_angle[0] + host_client->edict->v->punchangle[0]) * -0.333;
 465                 host_client->edict->v->angles[1] = host_client->edict->v->v_angle[1] + host_client->edict->v->punchangle[1];
 466         }
 467
 468         if ((int)host_client->edict->v->flags & FL_WATERJUMP)
 469         {
 470                 host_client->edict->v->velocity[0] = host_client->edict->v->movedir[0];
 471                 host_client->edict->v->velocity[1] = host_client->edict->v->movedir[1];
 472                 if (sv.time > host_client->edict->v->teleport_time || host_client->edict->v->waterlevel == 0)
 473                 {
 474                         host_client->edict->v->flags = (int)host_client->edict->v->flags - ((int)host_client->edict->v->flags & FL_WATERJUMP);
 475                         host_client->edict->v->teleport_time = 0;
 476                 }
 477                 return;
 478         }
 479
 480         // swim
 481         if (host_client->edict->v->waterlevel >= 2)
 482         if (host_client->edict->v->movetype != MOVETYPE_NOCLIP)
 483         {
 484                 if (host_client->cmd.forwardmove == 0 && host_client->cmd.sidemove == 0 && host_client->cmd.upmove == 0)
 485                 {
 486                         // drift towards bottom
 487                         wishvel[0] = 0;
 488                         wishvel[1] = 0;
 489                         wishvel[2] = -60;
 490                 }
 491                 else
 492                 {
 493                         for (j = 0;j < 3;j++)
 494                                 wishvel[j] = v_forward[j] * host_client->cmd.forwardmove + v_right[j] * host_client->cmd.sidemove;
 495                         wishvel[2] += host_client->cmd.upmove;
 496                 }
 497
 498                 wishspeed = VectorLength(wishvel);
 499                 wishspeed = min(wishspeed, sv_maxspeed.value) * 0.7;
 500
 501                 // water friction
 502                 f = VectorLength(host_client->edict->v->velocity) * (1 - sv.frametime * sv_friction.value);
 503                 if (f > 0)
 504                         f /= VectorLength(host_client->edict->v->velocity);
 505                 else
 506                         f = 0;
 507                 VectorScale(host_client->edict->v->velocity, f, host_client->edict->v->velocity);
 508
 509                 // water acceleration
 510                 if (wishspeed <= f)
 511                         return;
 512
 513                 f = wishspeed - f;
 514                 limit = sv_accelerate.value * wishspeed * sv.frametime;
 515                 if (f > limit)
 516                         f = limit;
 517                 limit = VectorLength(wishvel);
 518                 if (limit)
 519                         f /= limit;
 520                 VectorMA(host_client->edict->v->velocity, f, wishvel, host_client->edict->v->velocity);
 521                 return;
 522         }
 523
 524         // if not flying, move horizontally only
 525         if (host_client->edict->v->movetype != MOVETYPE_FLY)
 526         {
 527                 VectorClear(wishvel);
 528                 wishvel[1] = host_client->edict->v->v_angle[1];
 529                 AngleVectors(wishvel, v_forward, v_right, v_up);
 530         }
 531
 532         // hack to not let you back into teleporter
 533         VectorScale(v_right, host_client->cmd.sidemove, wishvel);
 534         if (sv.time >= host_client->edict->v->teleport_time || host_client->cmd.forwardmove > 0)
 535                 VectorMA(wishvel, host_client->cmd.forwardmove, v_forward, wishvel);
 536         if (host_client->edict->v->movetype != MOVETYPE_WALK)
 537                 wishvel[2] += cmd.upmove;
 538
 539         VectorCopy(wishvel, wishdir);
 540         VectorNormalize(wishdir);
 541         wishspeed = VectorLength(wishvel);
 542         if (wishspeed > sv_maxspeed.value)
 543                 wishspeed = sv_maxspeed.value;
 544
 545         if (host_client->edict->v->movetype == MOVETYPE_NOCLIP || host_client->edict->v->movetype == MOVETYPE_FLY)
 546         {
 547                 VectorScale(wishdir, wishspeed, host_client->edict->v->velocity);
 548                 return;
 549         }
 550
 551         if ((int)host_client->edict->v->flags & FL_ONGROUND) // walking
 552         {
 553                 // friction
 554                 f = host_client->edict->v->velocity[0] * host_client->edict->v->velocity[0] + host_client->edict->v->velocity[1] * host_client->edict->v->velocity[1];
 555                 if (f)
 556                 {
 557                         f = sqrt(f);
 558                         VectorCopy(host_client->edict->v->velocity, v);
 559                         v[2] = 0;
 560
 561                         // if the leading edge is over a dropoff, increase friction
 562                         limit = 16.0f / f;
 563                         VectorMA(host_client->edict->v->origin, limit, v, v);
 564                         v[2] += host_client->edict->v->mins[2];
 565
 566                         VectorCopy(v, start);
 567                         VectorCopy(v, stop);
 568                         stop[2] -= 34;
 569                         trace = SV_Move(start, vec3_origin, vec3_origin, stop, MOVE_NOMONSTERS, host_client->edict);
 570
 571                         // apply friction
 572                         if (f < sv_stopspeed.value)
 573                                 f = sv_stopspeed.value / f;
 574                         else
 575                                 f = 1;
 576                         if (trace.fraction == 1)
 577                                 f *= sv_edgefriction.value;
 578                         f = 1 - sv.frametime * f * sv_friction.value;
 579
 580                         if (f < 0)
 581                                 f = 0;
 582                         VectorScale(host_client->edict->v->velocity, f, host_client->edict->v->velocity);
 583                 }
 584         }
 585         else // airborn
 586                 wishspeed = min(wishspeed, 30);
 587
 588         // ground or air acceleration
 589         f = wishspeed - DotProduct(host_client->edict->v->velocity, wishdir);
 590         if (f > 0)
 591         {
 592                 limit = sv_accelerate.value * sv.frametime * wishspeed;
 593                 if (f > limit)
 594                         f = limit;
 595                 VectorMA(host_client->edict->v->velocity, f, wishdir, host_client->edict->v->velocity);
 596         }
 597 }
 598 #endif
 599
 600 /*
 601 ===================
 602 SV_ReadClientMove
 603 ===================
 604 */
 605 void SV_ReadClientMove (usercmd_t *move)
 606 {
 607         int i;
 608         vec3_t angle;
 609         int bits;
 610         eval_t *val;
 611         float total;
 612
 613         // read ping time
 614         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 615         host_client->ping_times[host_client->num_pings % NUM_PING_TIMES] = sv.time - MSG_ReadFloat ();
 616         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 617         host_client->num_pings++;
 618         for (i=0, total = 0;i < NUM_PING_TIMES;i++)
 619                 total += host_client->ping_times[i];
 620         // can be used for prediction
 621         host_client->ping = total / NUM_PING_TIMES;
 622         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_ping)))
 623                 val->_float = host_client->ping * 1000.0;
 624
 625         // read current angles
 626         for (i = 0;i < 3;i++)
 627         {
 628                 if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 629                 if (sv.protocol == PROTOCOL_QUAKE)
 630                         angle[i] = MSG_ReadAngle8i();
 631                 else if (sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3)
 632                         angle[i] = MSG_ReadAngle32f();
 633                 else if (sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES4 || sv.protocol == PROTOCOL_DARKPLACES5)
 634                         angle[i] = MSG_ReadAngle16i();
 635                 if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 636         }
 637
 638         VectorCopy (angle, host_client->edict->v->v_angle);
 639
 640         // read movement
 641         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 642         move->forwardmove = MSG_ReadCoord16i ();
 643         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 644         move->sidemove = MSG_ReadCoord16i ();
 645         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 646         move->upmove = MSG_ReadCoord16i ();
 647         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 648         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_movement)))
 649         {
 650                 val->vector[0] = move->forwardmove;
 651                 val->vector[1] = move->sidemove;
 652                 val->vector[2] = move->upmove;
 653         }
 654
 655         // read buttons
 656         bits = MSG_ReadByte ();
 657         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 658         host_client->edict->v->button0 = bits & 1;
 659         host_client->edict->v->button2 = (bits & 2)>>1;
 660         // LordHavoc: added 6 new buttons
 661         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button3))) val->_float = ((bits >> 2) & 1);
 662         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button4))) val->_float = ((bits >> 3) & 1);
 663         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button5))) val->_float = ((bits >> 4) & 1);
 664         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button6))) val->_float = ((bits >> 5) & 1);
 665         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button7))) val->_float = ((bits >> 6) & 1);
 666         if ((val = GETEDICTFIELDVALUE(host_client->edict, eval_button8))) val->_float = ((bits >> 7) & 1);
 667
 668         i = MSG_ReadByte ();
 669         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 670         if (i)
 671                 host_client->edict->v->impulse = i;
 672 }
 673
 674 /*
 675 ===================
 676 SV_ReadClientMessage
 677 ===================
 678 */
 679 extern void SV_SendServerinfo(client_t *client);
 680 void SV_ReadClientMessage(void)
 681 {
 682         int cmd, num;
 683         char *s;
 684
 685         //MSG_BeginReading ();
 686
 687         for(;;)
 688         {
 689                 if (!host_client->active)
 690                 {
 691                         // a command caused an error
 692                         SV_DropClient (false);
 693                         return;
 694                 }
 695
 696                 if (msg_badread)
 697                 {
 698                         Con_Print("SV_ReadClientMessage: badread\n");
 699                         SV_DropClient (false);
 700                         return;
 701                 }
 702
 703                 cmd = MSG_ReadChar ();
 704                 if (cmd == -1)
 705                 {
 706                         // end of message
 707                         break;
 708                 }
 709
 710                 switch (cmd)
 711                 {
 712                 default:
 713                         Con_Printf("SV_ReadClientMessage: unknown command char %i\n", cmd);
 714                         SV_DropClient (false);
 715                         return;
 716
 717                 case clc_nop:
 718                         break;
 719
 720                 case clc_stringcmd:
 721                         s = MSG_ReadString ();
 722                         if (strncasecmp(s, "spawn", 5) == 0
 723                          || strncasecmp(s, "begin", 5) == 0
 724                          || strncasecmp(s, "prespawn", 8) == 0)
 725                                 Cmd_ExecuteString (s, src_client);
 726                         else if (SV_ParseClientCommandQC)
 727                         {
 728                                 G_INT(OFS_PARM0) = PR_SetString(s);
 729                                 pr_global_struct->self = EDICT_TO_PROG(host_client->edict);
 730                                 PR_ExecuteProgram ((func_t)(SV_ParseClientCommandQC - pr_functions), "QC function SV_ParseClientCommand is missing");
 731                         }
 732                         else if (strncasecmp(s, "status", 6) == 0
 733                          || strncasecmp(s, "name", 4) == 0
 734                          || strncasecmp(s, "say", 3) == 0
 735                          || strncasecmp(s, "say_team", 8) == 0
 736                          || strncasecmp(s, "tell", 4) == 0
 737                          || strncasecmp(s, "color", 5) == 0
 738                          || strncasecmp(s, "kill", 4) == 0
 739                          || strncasecmp(s, "pause", 5) == 0
 740                          || strncasecmp(s, "kick", 4) == 0
 741                          || strncasecmp(s, "ping", 4) == 0
 742                          || strncasecmp(s, "ban", 3) == 0
 743                          || strncasecmp(s, "pmodel", 6) == 0
 744                          || strncasecmp(s, "rate", 4) == 0
 745                          || (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))
 746                          || (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)))
 747                                 Cmd_ExecuteString (s, src_client);
 748                         else
 749                                 Con_Printf("%s tried to %s\n", host_client->name, s);
 750                         break;
 751
 752                 case clc_disconnect:
 753                         SV_DropClient (false); // client wants to disconnect
 754                         return;
 755
 756                 case clc_move:
 757                         SV_ReadClientMove (&host_client->cmd);
 758                         break;
 759
 760                 case clc_ackentities:
 761                         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 762                         num = MSG_ReadLong();
 763                         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 764                         if (developer_networkentities.integer >= 1)
 765                                 Con_Printf("recv clc_ackentities %i\n", num);
 766                         if (host_client->entitydatabase)
 767                                 EntityFrame_AckFrame(host_client->entitydatabase, num);
 768                         else if (host_client->entitydatabase4)
 769                                 EntityFrame4_AckFrame(host_client->entitydatabase4, num, true);
 770                         else if (host_client->entitydatabase5)
 771                                 EntityFrame5_AckFrame(host_client->entitydatabase5, num, host_client - svs.clients + 1);
 772                         break;
 773                 }
 774         }
 775 }
 776
 777 /*
 778 ==================
 779 SV_RunClients
 780 ==================
 781 */
 782 void SV_RunClients (void)
 783 {
 784         int i;
 785
 786         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 787         {
 788                 if (!host_client->active)
 789                         continue;
 790
 791                 if (!host_client->spawned)
 792                 {
 793                         // clear client movement until a new packet is received
 794                         memset (&host_client->cmd, 0, sizeof(host_client->cmd));
 795                         continue;
 796                 }
 797
 798                 if (sv.frametime)
 799                 {
 800                         // LordHavoc: QuakeC replacement for SV_ClientThink (player movement)
 801                         if (SV_PlayerPhysicsQC)
 802                         {
 803                                 pr_global_struct->time = sv.time;
 804                                 pr_global_struct->self = EDICT_TO_PROG(host_client->edict);
 805                                 PR_ExecuteProgram ((func_t)(SV_PlayerPhysicsQC - pr_functions), "QC function SV_PlayerPhysics is missing");
 806                         }
 807                         else
 808                                 SV_ClientThink ();
 809
 810                         SV_CheckVelocity(host_client->edict);
 811
 812                         // LordHavoc: a hack to ensure that the (rather silly) id1 quakec
 813                         // player_run/player_stand1 does not horribly malfunction if the
 814                         // velocity becomes a number that is both == 0 and != 0
 815                         // (sounds to me like NaN but to be absolutely safe...)
 816                         if (DotProduct(host_client->edict->v->velocity, host_client->edict->v->velocity) < 0.0001)
 817                                 VectorClear(host_client->edict->v->velocity);
 818                 }
 819         }
 820 }
 821