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
  32 static usercmd_t cmd;
  33
  34
  35 /*
  36 ===============
  37 SV_SetIdealPitch
  38 ===============
  39 */
  40 #define MAX_FORWARD     6
  41 void SV_SetIdealPitch (void)
  42 {
  43         float   angleval, sinval, cosval, step, dir;
  44         trace_t tr;
  45         vec3_t  top, bottom;
  46         float   z[MAX_FORWARD];
  47         int             i, j;
  48         int             steps;
  49
  50         if (!((int)host_client->edict->fields.server->flags & FL_ONGROUND))
  51                 return;
  52
  53         angleval = host_client->edict->fields.server->angles[YAW] * M_PI*2 / 360;
  54         sinval = sin(angleval);
  55         cosval = cos(angleval);
  56
  57         for (i=0 ; i<MAX_FORWARD ; i++)
  58         {
  59                 top[0] = host_client->edict->fields.server->origin[0] + cosval*(i+3)*12;
  60                 top[1] = host_client->edict->fields.server->origin[1] + sinval*(i+3)*12;
  61                 top[2] = host_client->edict->fields.server->origin[2] + host_client->edict->fields.server->view_ofs[2];
  62
  63                 bottom[0] = top[0];
  64                 bottom[1] = top[1];
  65                 bottom[2] = top[2] - 160;
  66
  67                 tr = SV_Move (top, vec3_origin, vec3_origin, bottom, MOVE_NOMONSTERS, host_client->edict);
  68                 // if looking at a wall, leave ideal the way is was
  69                 if (tr.startsolid)
  70                         return;
  71
  72                 // near a dropoff
  73                 if (tr.fraction == 1)
  74                         return;
  75
  76                 z[i] = top[2] + tr.fraction*(bottom[2]-top[2]);
  77         }
  78
  79         dir = 0;
  80         steps = 0;
  81         for (j=1 ; j<i ; j++)
  82         {
  83                 step = z[j] - z[j-1];
  84                 if (step > -ON_EPSILON && step < ON_EPSILON)
  85                         continue;
  86
  87                 // mixed changes
  88                 if (dir && ( step-dir > ON_EPSILON || step-dir < -ON_EPSILON ) )
  89                         return;
  90
  91                 steps++;
  92                 dir = step;
  93         }
  94
  95         if (!dir)
  96         {
  97                 host_client->edict->fields.server->idealpitch = 0;
  98                 return;
  99         }
 100
 101         if (steps < 2)
 102                 return;
 103         host_client->edict->fields.server->idealpitch = -dir * sv_idealpitchscale.value;
 104 }
 105
 106 static vec3_t wishdir, forward, right, up;
 107 static float wishspeed;
 108
 109 static qboolean onground;
 110
 111 /*
 112 ==================
 113 SV_UserFriction
 114
 115 ==================
 116 */
 117 void SV_UserFriction (void)
 118 {
 119         float speed, newspeed, control, friction;
 120         vec3_t start, stop;
 121         trace_t trace;
 122
 123         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]);
 124         if (!speed)
 125                 return;
 126
 127         // if the leading edge is over a dropoff, increase friction
 128         start[0] = stop[0] = host_client->edict->fields.server->origin[0] + host_client->edict->fields.server->velocity[0]/speed*16;
 129         start[1] = stop[1] = host_client->edict->fields.server->origin[1] + host_client->edict->fields.server->velocity[1]/speed*16;
 130         start[2] = host_client->edict->fields.server->origin[2] + host_client->edict->fields.server->mins[2];
 131         stop[2] = start[2] - 34;
 132
 133         trace = SV_Move (start, vec3_origin, vec3_origin, stop, MOVE_NOMONSTERS, host_client->edict);
 134
 135         if (trace.fraction == 1.0)
 136                 friction = sv_friction.value*sv_edgefriction.value;
 137         else
 138                 friction = sv_friction.value;
 139
 140         // apply friction
 141         control = speed < sv_stopspeed.value ? sv_stopspeed.value : speed;
 142         newspeed = speed - sv.frametime*control*friction;
 143
 144         if (newspeed < 0)
 145                 newspeed = 0;
 146         else
 147                 newspeed /= speed;
 148
 149         VectorScale(host_client->edict->fields.server->velocity, newspeed, host_client->edict->fields.server->velocity);
 150 }
 151
 152 /*
 153 ==============
 154 SV_Accelerate
 155 ==============
 156 */
 157 void SV_Accelerate (void)
 158 {
 159         int i;
 160         float addspeed, accelspeed, currentspeed;
 161
 162         currentspeed = DotProduct (host_client->edict->fields.server->velocity, wishdir);
 163         addspeed = wishspeed - currentspeed;
 164         if (addspeed <= 0)
 165                 return;
 166         accelspeed = sv_accelerate.value*sv.frametime*wishspeed;
 167         if (accelspeed > addspeed)
 168                 accelspeed = addspeed;
 169
 170         for (i=0 ; i<3 ; i++)
 171                 host_client->edict->fields.server->velocity[i] += accelspeed*wishdir[i];
 172 }
 173
 174 void SV_AirAccelerate (vec3_t wishveloc)
 175 {
 176         int i;
 177         float addspeed, wishspd, accelspeed, currentspeed;
 178
 179         wishspd = VectorNormalizeLength (wishveloc);
 180         if (wishspd > sv_maxairspeed.value)
 181                 wishspd = sv_maxairspeed.value;
 182         currentspeed = DotProduct (host_client->edict->fields.server->velocity, wishveloc);
 183         addspeed = wishspd - currentspeed;
 184         if (addspeed <= 0)
 185                 return;
 186         accelspeed = (sv_airaccelerate.value < 0 ? sv_accelerate.value : sv_airaccelerate.value)*wishspeed * sv.frametime;
 187         if (accelspeed > addspeed)
 188                 accelspeed = addspeed;
 189
 190         for (i=0 ; i<3 ; i++)
 191                 host_client->edict->fields.server->velocity[i] += accelspeed*wishveloc[i];
 192 }
 193
 194
 195 void DropPunchAngle (void)
 196 {
 197         float len;
 198         prvm_eval_t *val;
 199
 200         len = VectorNormalizeLength (host_client->edict->fields.server->punchangle);
 201
 202         len -= 10*sv.frametime;
 203         if (len < 0)
 204                 len = 0;
 205         VectorScale (host_client->edict->fields.server->punchangle, len, host_client->edict->fields.server->punchangle);
 206
 207         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_punchvector)))
 208         {
 209                 len = VectorNormalizeLength (val->vector);
 210
 211                 len -= 20*sv.frametime;
 212                 if (len < 0)
 213                         len = 0;
 214                 VectorScale (val->vector, len, val->vector);
 215         }
 216 }
 217
 218 /*
 219 ===================
 220 SV_FreeMove
 221 ===================
 222 */
 223 void SV_FreeMove (void)
 224 {
 225         int i;
 226         float wishspeed;
 227
 228         AngleVectors (host_client->edict->fields.server->v_angle, forward, right, up);
 229
 230         for (i = 0; i < 3; i++)
 231                 host_client->edict->fields.server->velocity[i] = forward[i] * cmd.forwardmove + right[i] * cmd.sidemove;
 232
 233         host_client->edict->fields.server->velocity[2] += cmd.upmove;
 234
 235         wishspeed = VectorLength(host_client->edict->fields.server->velocity);
 236         if (wishspeed > sv_maxspeed.value)
 237                 VectorScale(host_client->edict->fields.server->velocity, sv_maxspeed.value / wishspeed, host_client->edict->fields.server->velocity);
 238 }
 239
 240 /*
 241 ===================
 242 SV_WaterMove
 243
 244 ===================
 245 */
 246 void SV_WaterMove (void)
 247 {
 248         int i;
 249         vec3_t wishvel;
 250         float speed, newspeed, wishspeed, addspeed, accelspeed, temp;
 251
 252         // user intentions
 253         AngleVectors (host_client->edict->fields.server->v_angle, forward, right, up);
 254
 255         for (i=0 ; i<3 ; i++)
 256                 wishvel[i] = forward[i]*cmd.forwardmove + right[i]*cmd.sidemove;
 257
 258         if (!cmd.forwardmove && !cmd.sidemove && !cmd.upmove)
 259                 wishvel[2] -= 60;               // drift towards bottom
 260         else
 261                 wishvel[2] += cmd.upmove;
 262
 263         wishspeed = VectorLength(wishvel);
 264         if (wishspeed > sv_maxspeed.value)
 265         {
 266                 temp = sv_maxspeed.value/wishspeed;
 267                 VectorScale (wishvel, temp, wishvel);
 268                 wishspeed = sv_maxspeed.value;
 269         }
 270         wishspeed *= 0.7;
 271
 272         // water friction
 273         speed = VectorLength(host_client->edict->fields.server->velocity);
 274         if (speed)
 275         {
 276                 newspeed = speed - sv.frametime * speed * sv_waterfriction.value;
 277                 if (newspeed < 0)
 278                         newspeed = 0;
 279                 temp = newspeed/speed;
 280                 VectorScale(host_client->edict->fields.server->velocity, temp, host_client->edict->fields.server->velocity);
 281         }
 282         else
 283                 newspeed = 0;
 284
 285         // water acceleration
 286         if (!wishspeed)
 287                 return;
 288
 289         addspeed = wishspeed - newspeed;
 290         if (addspeed <= 0)
 291                 return;
 292
 293         VectorNormalize (wishvel);
 294         accelspeed = (sv_wateraccelerate.value < 0 ? sv_accelerate.value : sv_wateraccelerate.value) * wishspeed * sv.frametime;
 295         if (accelspeed > addspeed)
 296                 accelspeed = addspeed;
 297
 298         for (i=0 ; i<3 ; i++)
 299                 host_client->edict->fields.server->velocity[i] += accelspeed * wishvel[i];
 300 }
 301
 302 void SV_WaterJump (void)
 303 {
 304         if (sv.time > host_client->edict->fields.server->teleport_time || !host_client->edict->fields.server->waterlevel)
 305         {
 306                 host_client->edict->fields.server->flags = (int)host_client->edict->fields.server->flags & ~FL_WATERJUMP;
 307                 host_client->edict->fields.server->teleport_time = 0;
 308         }
 309         host_client->edict->fields.server->velocity[0] = host_client->edict->fields.server->movedir[0];
 310         host_client->edict->fields.server->velocity[1] = host_client->edict->fields.server->movedir[1];
 311 }
 312
 313
 314 /*
 315 ===================
 316 SV_AirMove
 317
 318 ===================
 319 */
 320 void SV_AirMove (void)
 321 {
 322         int i;
 323         vec3_t wishvel;
 324         float fmove, smove, temp;
 325
 326         // LordHavoc: correct quake movement speed bug when looking up/down
 327         wishvel[0] = wishvel[2] = 0;
 328         wishvel[1] = host_client->edict->fields.server->angles[1];
 329         AngleVectors (wishvel, forward, right, up);
 330
 331         fmove = cmd.forwardmove;
 332         smove = cmd.sidemove;
 333
 334 // hack to not let you back into teleporter
 335         if (sv.time < host_client->edict->fields.server->teleport_time && fmove < 0)
 336                 fmove = 0;
 337
 338         for (i=0 ; i<3 ; i++)
 339                 wishvel[i] = forward[i]*fmove + right[i]*smove;
 340
 341         if ((int)host_client->edict->fields.server->movetype != MOVETYPE_WALK)
 342                 wishvel[2] += cmd.upmove;
 343
 344         VectorCopy (wishvel, wishdir);
 345         wishspeed = VectorNormalizeLength(wishdir);
 346         if (wishspeed > sv_maxspeed.value)
 347         {
 348                 temp = sv_maxspeed.value/wishspeed;
 349                 VectorScale (wishvel, temp, wishvel);
 350                 wishspeed = sv_maxspeed.value;
 351         }
 352
 353         if (host_client->edict->fields.server->movetype == MOVETYPE_NOCLIP)
 354         {
 355                 // noclip
 356                 VectorCopy (wishvel, host_client->edict->fields.server->velocity);
 357         }
 358         else if ( onground )
 359         {
 360                 SV_UserFriction ();
 361                 SV_Accelerate ();
 362         }
 363         else
 364         {
 365                 // not on ground, so little effect on velocity
 366                 SV_AirAccelerate (wishvel);
 367         }
 368 }
 369
 370 /*
 371 ===================
 372 SV_ClientThink
 373
 374 the move fields specify an intended velocity in pix/sec
 375 the angle fields specify an exact angular motion in degrees
 376 ===================
 377 */
 378 void SV_ClientThink (void)
 379 {
 380         vec3_t v_angle;
 381
 382         if (host_client->edict->fields.server->movetype == MOVETYPE_NONE)
 383                 return;
 384
 385         onground = (int)host_client->edict->fields.server->flags & FL_ONGROUND;
 386
 387         DropPunchAngle ();
 388
 389         // if dead, behave differently
 390         if (host_client->edict->fields.server->health <= 0)
 391                 return;
 392
 393         cmd = host_client->cmd;
 394
 395         // angles
 396         // show 1/3 the pitch angle and all the roll angle
 397         VectorAdd (host_client->edict->fields.server->v_angle, host_client->edict->fields.server->punchangle, v_angle);
 398         host_client->edict->fields.server->angles[ROLL] = V_CalcRoll (host_client->edict->fields.server->angles, host_client->edict->fields.server->velocity)*4;
 399         if (!host_client->edict->fields.server->fixangle)
 400         {
 401                 host_client->edict->fields.server->angles[PITCH] = -v_angle[PITCH]/3;
 402                 host_client->edict->fields.server->angles[YAW] = v_angle[YAW];
 403         }
 404
 405         if ( (int)host_client->edict->fields.server->flags & FL_WATERJUMP )
 406         {
 407                 SV_WaterJump ();
 408                 return;
 409         }
 410
 411         /*
 412         // Player is (somehow) outside of the map, or flying, or noclipping
 413         if (host_client->edict->fields.server->movetype != MOVETYPE_NOCLIP && (host_client->edict->fields.server->movetype == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict)))
 414         //if (host_client->edict->fields.server->movetype == MOVETYPE_NOCLIP || host_client->edict->fields.server->movetype == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict))
 415         {
 416                 SV_FreeMove ();
 417                 return;
 418         }
 419         */
 420
 421         // walk
 422         if ((host_client->edict->fields.server->waterlevel >= 2) && (host_client->edict->fields.server->movetype != MOVETYPE_NOCLIP))
 423         {
 424                 SV_WaterMove ();
 425                 return;
 426         }
 427
 428         SV_AirMove ();
 429 }
 430
 431 /*
 432 ===================
 433 SV_ReadClientMove
 434 ===================
 435 */
 436 qboolean SV_ReadClientMove (void)
 437 {
 438         qboolean kickplayer = false;
 439         int i;
 440         double oldmovetime;
 441 #ifdef NUM_PING_TIMES
 442         double total;
 443 #endif
 444         usercmd_t *move = &host_client->cmd;
 445
 446         oldmovetime = move->time;
 447
 448         // if this move has been applied, clear it, and start accumulating new data
 449         if (move->applied)
 450                 memset(move, 0, sizeof(*move));
 451
 452         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 453
 454         // read ping time
 455         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)
 456                 move->sequence = MSG_ReadLong ();
 457         move->time = MSG_ReadFloat ();
 458         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 459         move->receivetime = sv.time;
 460
 461         // calculate average ping time
 462         host_client->ping = move->receivetime - move->time;
 463 #ifdef NUM_PING_TIMES
 464         host_client->ping_times[host_client->num_pings % NUM_PING_TIMES] = move->receivetime - move->time;
 465         host_client->num_pings++;
 466         for (i=0, total = 0;i < NUM_PING_TIMES;i++)
 467                 total += host_client->ping_times[i];
 468         host_client->ping = total / NUM_PING_TIMES;
 469 #endif
 470
 471         // read current angles
 472         for (i = 0;i < 3;i++)
 473         {
 474                 if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE)
 475                         move->viewangles[i] = MSG_ReadAngle8i();
 476                 else if (sv.protocol == PROTOCOL_DARKPLACES1)
 477                         move->viewangles[i] = MSG_ReadAngle16i();
 478                 else if (sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3)
 479                         move->viewangles[i] = MSG_ReadAngle32f();
 480                 else
 481                         move->viewangles[i] = MSG_ReadAngle16i();
 482         }
 483         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 484
 485         // read movement
 486         move->forwardmove = MSG_ReadCoord16i ();
 487         move->sidemove = MSG_ReadCoord16i ();
 488         move->upmove = MSG_ReadCoord16i ();
 489         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 490
 491         // read buttons
 492         // be sure to bitwise OR them into the move->buttons because we want to
 493         // accumulate button presses from multiple packets per actual move
 494         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)
 495                 move->buttons |= MSG_ReadByte ();
 496         else
 497                 move->buttons |= MSG_ReadLong ();
 498         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 499
 500         // read impulse
 501         i = MSG_ReadByte ();
 502         if (i)
 503                 move->impulse = i;
 504         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 505
 506         // PRYDON_CLIENTCURSOR
 507         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)
 508         {
 509                 // 30 bytes
 510                 move->cursor_screen[0] = MSG_ReadShort() * (1.0f / 32767.0f);
 511                 move->cursor_screen[1] = MSG_ReadShort() * (1.0f / 32767.0f);
 512                 move->cursor_start[0] = MSG_ReadFloat();
 513                 move->cursor_start[1] = MSG_ReadFloat();
 514                 move->cursor_start[2] = MSG_ReadFloat();
 515                 move->cursor_impact[0] = MSG_ReadFloat();
 516                 move->cursor_impact[1] = MSG_ReadFloat();
 517                 move->cursor_impact[2] = MSG_ReadFloat();
 518                 move->cursor_entitynumber = (unsigned short)MSG_ReadShort();
 519                 if (move->cursor_entitynumber >= prog->max_edicts)
 520                 {
 521                         Con_DPrintf("SV_ReadClientMessage: client send bad cursor_entitynumber\n");
 522                         move->cursor_entitynumber = 0;
 523                 }
 524                 // as requested by FrikaC, cursor_trace_ent is reset to world if the
 525                 // entity is free at time of receipt
 526                 if (PRVM_EDICT_NUM(move->cursor_entitynumber)->priv.server->free)
 527                         move->cursor_entitynumber = 0;
 528                 if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 529         }
 530
 531         if (!host_client->spawned)
 532                 memset(move, 0, sizeof(*move));
 533         else if (move->time > (float)sv.time + 0.001f) // add a little fuzz factor due to float precision issues
 534         {
 535                 Con_DPrintf("client move->time %f > sv.time %f, kicking\n", move->time, sv.time);
 536                 // if the client is lying about time, we have definitively detected a
 537                 // speed cheat attempt of the worst sort, and we can immediately kick
 538                 // the offending player off.
 539                 // this fixes the timestamp to prevent a speed cheat from working
 540                 move->time = sv.time;
 541                 // but we kick the player for good measure
 542                 kickplayer = true;
 543         }
 544         else
 545         {
 546                 // apply the latest accepted move to the entity fields
 547                 host_client->movesequence = move->sequence;
 548                 if (host_client->movesequence)
 549                 {
 550                         double frametime = bound(0, move->time - oldmovetime, 0.1);
 551                         double oldframetime = prog->globals.server->frametime;
 552                         //if (move->time - oldmovetime >= 0.1001)
 553                         //      Con_DPrintf("client move exceeds 100ms!  (time %f -> time %f)\n", oldmovetime, move->time);
 554                         prog->globals.server->frametime = frametime;
 555                         SV_Physics_ClientEntity(host_client->edict);
 556                         prog->globals.server->frametime = oldframetime;
 557                 }
 558         }
 559         return kickplayer;
 560 }
 561
 562 void SV_ApplyClientMove (void)
 563 {
 564         prvm_eval_t *val;
 565         usercmd_t *move = &host_client->cmd;
 566
 567         if (!move->receivetime)
 568                 return;
 569
 570         // note: a move can be applied multiple times if the client packets are
 571         // not coming as often as the physics is executed, and the move must be
 572         // applied before running qc each time because the id1 qc had a bug where
 573         // it clears self.button2 in PlayerJump, causing pogostick behavior if
 574         // moves are not applied every time before calling qc
 575         move->applied = true;
 576
 577         // set the edict fields
 578         host_client->edict->fields.server->button0 = move->buttons & 1;
 579         host_client->edict->fields.server->button2 = (move->buttons & 2)>>1;
 580         if (move->impulse)
 581                 host_client->edict->fields.server->impulse = move->impulse;
 582         // only send the impulse to qc once
 583         move->impulse = 0;
 584         VectorCopy(move->viewangles, host_client->edict->fields.server->v_angle);
 585         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button3))) val->_float = ((move->buttons >> 2) & 1);
 586         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button4))) val->_float = ((move->buttons >> 3) & 1);
 587         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button5))) val->_float = ((move->buttons >> 4) & 1);
 588         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button6))) val->_float = ((move->buttons >> 5) & 1);
 589         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button7))) val->_float = ((move->buttons >> 6) & 1);
 590         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button8))) val->_float = ((move->buttons >> 7) & 1);
 591         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button9))) val->_float = ((move->buttons >> 11) & 1);
 592         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button10))) val->_float = ((move->buttons >> 12) & 1);
 593         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button11))) val->_float = ((move->buttons >> 13) & 1);
 594         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button12))) val->_float = ((move->buttons >> 14) & 1);
 595         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button13))) val->_float = ((move->buttons >> 15) & 1);
 596         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button14))) val->_float = ((move->buttons >> 16) & 1);
 597         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button15))) val->_float = ((move->buttons >> 17) & 1);
 598         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_button16))) val->_float = ((move->buttons >> 18) & 1);
 599         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_buttonuse))) val->_float = ((move->buttons >> 8) & 1);
 600         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_buttonchat))) val->_float = ((move->buttons >> 9) & 1);
 601         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_active))) val->_float = ((move->buttons >> 10) & 1);
 602         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_movement))) VectorSet(val->vector, move->forwardmove, move->sidemove, move->upmove);
 603         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_screen))) VectorCopy(move->cursor_screen, val->vector);
 604         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_trace_start))) VectorCopy(move->cursor_start, val->vector);
 605         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_trace_endpos))) VectorCopy(move->cursor_impact, val->vector);
 606         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_cursor_trace_ent))) val->edict = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM(move->cursor_entitynumber));
 607         if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_ping))) val->_float = host_client->ping * 1000.0;
 608 }
 609
 610 void SV_FrameLost(int framenum)
 611 {
 612         if (host_client->entitydatabase5)
 613                 EntityFrame5_LostFrame(host_client->entitydatabase5, framenum);
 614 }
 615
 616 void SV_FrameAck(int framenum)
 617 {
 618         if (host_client->entitydatabase)
 619                 EntityFrame_AckFrame(host_client->entitydatabase, framenum);
 620         else if (host_client->entitydatabase4)
 621                 EntityFrame4_AckFrame(host_client->entitydatabase4, framenum, true);
 622         else if (host_client->entitydatabase5)
 623                 EntityFrame5_AckFrame(host_client->entitydatabase5, framenum);
 624 }
 625
 626 /*
 627 ===================
 628 SV_ReadClientMessage
 629 ===================
 630 */
 631 extern void SV_SendServerinfo(client_t *client);
 632 void SV_ReadClientMessage(void)
 633 {
 634         int cmd, num;
 635         char *s;
 636
 637         //MSG_BeginReading ();
 638
 639         for(;;)
 640         {
 641                 if (!host_client->active)
 642                 {
 643                         // a command caused an error
 644                         SV_DropClient (false);
 645                         return;
 646                 }
 647
 648                 if (msg_badread)
 649                 {
 650                         Con_Print("SV_ReadClientMessage: badread\n");
 651                         SV_DropClient (false);
 652                         return;
 653                 }
 654
 655                 cmd = MSG_ReadByte ();
 656                 if (cmd == -1)
 657                 {
 658                         // end of message
 659                         break;
 660                 }
 661
 662                 switch (cmd)
 663                 {
 664                 default:
 665                         Con_Printf("SV_ReadClientMessage: unknown command char %i\n", cmd);
 666                         SV_DropClient (false);
 667                         return;
 668
 669                 case clc_nop:
 670                         break;
 671
 672                 case clc_stringcmd:
 673                         s = MSG_ReadString ();
 674                         if (strncasecmp(s, "spawn", 5) == 0
 675                          || strncasecmp(s, "begin", 5) == 0
 676                          || strncasecmp(s, "prespawn", 8) == 0)
 677                                 Cmd_ExecuteString (s, src_client);
 678                         else if (SV_ParseClientCommandQC)
 679                         {
 680                                 PRVM_G_INT(OFS_PARM0) = PRVM_SetEngineString(s);
 681                                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 682                                 PRVM_ExecuteProgram ((func_t)(SV_ParseClientCommandQC - prog->functions), "QC function SV_ParseClientCommand is missing");
 683                         }
 684                         else if (strncasecmp(s, "status", 6) == 0
 685                          || strncasecmp(s, "name", 4) == 0
 686                          || strncasecmp(s, "say", 3) == 0
 687                          || strncasecmp(s, "say_team", 8) == 0
 688                          || strncasecmp(s, "tell", 4) == 0
 689                          || strncasecmp(s, "color", 5) == 0
 690                          || strncasecmp(s, "kill", 4) == 0
 691                          || strncasecmp(s, "pause", 5) == 0
 692                          || strncasecmp(s, "kick", 4) == 0
 693                          || strncasecmp(s, "ping", 4) == 0
 694                          || strncasecmp(s, "ban", 3) == 0
 695                          || strncasecmp(s, "pmodel", 6) == 0
 696                          || strncasecmp(s, "rate", 4) == 0
 697                          || strncasecmp(s, "playermodel", 11) == 0
 698                          || strncasecmp(s, "playerskin", 10) == 0
 699                          || (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))
 700                          || (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)))
 701                                 Cmd_ExecuteString (s, src_client);
 702                         else
 703                                 Con_Printf("%s tried to %s\n", host_client->name, s);
 704                         break;
 705
 706                 case clc_disconnect:
 707                         SV_DropClient (false); // client wants to disconnect
 708                         return;
 709
 710                 case clc_move:
 711                         // if ReadClientMove returns true, the client tried to speed cheat
 712                         if (SV_ReadClientMove ())
 713                                 SV_DropClient (false);
 714                         break;
 715
 716                 case clc_ackframe:
 717                         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 718                         num = MSG_ReadLong();
 719                         if (msg_badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
 720                         if (developer_networkentities.integer >= 1)
 721                                 Con_Printf("recv clc_ackframe %i\n", num);
 722                         // if the client hasn't progressed through signons yet,
 723                         // ignore any clc_ackframes we get (they're probably from the
 724                         // previous level)
 725                         if (host_client->spawned && host_client->latestframenum < num)
 726                         {
 727                                 int i;
 728                                 for (i = host_client->latestframenum + 1;i < num;i++)
 729                                         SV_FrameLost(i);
 730                                 SV_FrameAck(num);
 731                                 host_client->latestframenum = num;
 732                         }
 733                         break;
 734                 }
 735         }
 736 }
 737