qcsrc/server/cl_physics.qc

   1 .float race_penalty;
   2 .float restart_jump;
   3
   4 .float ladder_time;
   5 .entity ladder_entity;
   6 .float gravity;
   7 .float swamp_slowdown;
   8 .float lastflags;
   9 .float lastground;
  10 .float wasFlying;
  11 .float spectatorspeed;
  12
  13 .float multijump_count;
  14 .float multijump_ready;
  15 .float prevjumpbutton;
  16
  17 /*
  18 =============
  19 PlayerJump
  20
  21 When you press the jump key
  22 =============
  23 */
  24 void PlayerJump (void)
  25 {
  26         if(g_freezetag && self.freezetag_frozen)
  27                 return; // no jumping in freezetag when frozen
  28
  29         float mjumpheight;
  30         float doublejump;
  31
  32         doublejump = FALSE;
  33         if (sv_doublejump)
  34         {
  35                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
  36                 if (trace_fraction < 1 && trace_plane_normal_z > 0.7)
  37                         doublejump = TRUE;
  38         }
  39
  40         mjumpheight = cvar("sv_jumpvelocity");
  41         if (self.waterlevel >= WATERLEVEL_SWIMMING)
  42         {
  43                 if (self.watertype == CONTENT_WATER)
  44                         self.velocity_z = 200;
  45                 else if (self.watertype == CONTENT_SLIME)
  46                         self.velocity_z = 80;
  47                 else
  48                         self.velocity_z = 50;
  49
  50                 return;
  51         }
  52
  53         if (cvar("g_multijump"))
  54         {
  55                 if (self.prevjumpbutton == FALSE && !(self.flags & FL_ONGROUND)) // jump button pressed this frame and we are in midair
  56                         self.multijump_ready = TRUE;  // this is necessary to check that we released the jump button and pressed it again
  57                 else
  58                         self.multijump_ready = FALSE;
  59         }
  60
  61         if(!doublejump && self.multijump_ready && self.multijump_count < cvar("g_multijump") && self.velocity_z > cvar("g_multijump_speed"))
  62         {
  63                 // doublejump = FALSE; // checked above in the if
  64                 if (cvar("g_multijump") > 0)
  65                 {
  66                         if (cvar("g_multijump_add") == 0) // in this case we make the z velocity == jumpvelocity
  67                         {
  68                                 if (self.velocity_z < mjumpheight)
  69                                 {
  70                                         doublejump = TRUE;
  71                                         self.velocity_z = 0;
  72                                 }
  73                         }
  74                         else
  75                                 doublejump = TRUE;
  76
  77                         if(doublejump)
  78                         {
  79                                 if(self.movement_x != 0 || self.movement_y != 0) // don't remove all speed if player isnt pressing any movement keys
  80                                 {
  81                                         float curspeed;
  82                                         vector wishvel, wishdir;
  83
  84                                         curspeed = max(
  85                                                 vlen(vec2(self.velocity)), // current xy speed
  86                                                 vlen(vec2(antilag_takebackavgvelocity(self, max(self.lastteleporttime + sys_frametime, time - 0.25), time))) // average xy topspeed over the last 0.25 secs
  87                                         );
  88                                         makevectors(self.v_angle_y * '0 1 0');
  89                                         wishvel = v_forward * self.movement_x + v_right * self.movement_y;
  90                                         wishdir = normalize(wishvel);
  91
  92                                         self.velocity_x = wishdir_x * curspeed; // allow "dodging" at a multijump
  93                                         self.velocity_y = wishdir_y * curspeed;
  94                                         // keep velocity_z unchanged!
  95                                 }
  96                                 self.multijump_count += 1;
  97                         }
  98                 }
  99                 self.multijump_ready = FALSE; // require releasing and pressing the jump button again for the next jump
 100         }
 101
 102         if (!doublejump)
 103                 if (!(self.flags & FL_ONGROUND))
 104                         return;
 105
 106         if(!sv_pogostick)
 107                 if (!(self.flags & FL_JUMPRELEASED))
 108                         return;
 109
 110         if(self.health <= g_bloodloss)
 111                 return;
 112
 113         // sv_jumpspeedcap_min/sv_jumpspeedcap_max act as baseline
 114         // velocity bounds.  Final velocity is bound between (jumpheight *
 115         // min + jumpheight) and (jumpheight * max + jumpheight);
 116
 117         if(cvar_string("sv_jumpspeedcap_min") != "")
 118         {
 119                 float minjumpspeed;
 120
 121                 minjumpspeed = mjumpheight * cvar("sv_jumpspeedcap_min");
 122
 123                 if (self.velocity_z < minjumpspeed)
 124                         mjumpheight += minjumpspeed - self.velocity_z;
 125         }
 126
 127         if(cvar_string("sv_jumpspeedcap_max") != "")
 128         {
 129                 // don't do jump speedcaps on ramps to preserve old xonotic ramjump style
 130                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
 131
 132                 if(!(trace_fraction < 1 && trace_plane_normal_z < 0.98 && cvar("sv_jumpspeedcap_max_disable_on_ramps")))
 133                 {
 134                         float maxjumpspeed;
 135
 136                         maxjumpspeed = mjumpheight * cvar("sv_jumpspeedcap_max");
 137
 138                         if (self.velocity_z > maxjumpspeed)
 139                                 mjumpheight -= self.velocity_z - maxjumpspeed;
 140                 }
 141         }
 142
 143         if(!(self.lastflags & FL_ONGROUND))
 144         {
 145                 if(cvar("speedmeter"))
 146                         dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
 147                 if(self.lastground < time - 0.3)
 148                 {
 149                         self.velocity_x *= (1 - cvar("sv_friction_on_land"));
 150                         self.velocity_y *= (1 - cvar("sv_friction_on_land"));
 151                 }
 152                 if(self.jumppadcount > 1)
 153                         dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
 154                 self.jumppadcount = 0;
 155         }
 156
 157         self.velocity_z = self.velocity_z + mjumpheight;
 158         self.oldvelocity_z = self.velocity_z;
 159
 160         self.flags &~= FL_ONGROUND;
 161         self.flags &~= FL_JUMPRELEASED;
 162
 163         if (self.crouch)
 164                 setanim(self, self.anim_duckjump, FALSE, TRUE, TRUE);
 165         else
 166                 setanim(self, self.anim_jump, FALSE, TRUE, TRUE);
 167
 168         if(g_jump_grunt)
 169                 PlayerSound(playersound_jump, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 170
 171         self.restart_jump = -1; // restart jump anim next time
 172         // value -1 is used to not use the teleport bit (workaround for tiny hitch when re-jumping)
 173 }
 174
 175 void CheckWaterJump()
 176 {
 177         local vector start, end;
 178
 179 // check for a jump-out-of-water
 180         makevectors (self.angles);
 181         start = self.origin;
 182         start_z = start_z + 8;
 183         v_forward_z = 0;
 184         normalize(v_forward);
 185         end = start + v_forward*24;
 186         traceline (start, end, TRUE, self);
 187         if (trace_fraction < 1)
 188         {       // solid at waist
 189                 start_z = start_z + self.maxs_z - 8;
 190                 end = start + v_forward*24;
 191                 self.movedir = trace_plane_normal * -50;
 192                 traceline (start, end, TRUE, self);
 193                 if (trace_fraction == 1)
 194                 {       // open at eye level
 195                         self.flags |= FL_WATERJUMP;
 196                         self.velocity_z = 225;
 197                         self.flags &~= FL_JUMPRELEASED;
 198                         self.teleport_time = time + 2;  // safety net
 199                         return;
 200                 }
 201         }
 202 };
 203
 204 float racecar_angle(float forward, float down)
 205 {
 206         float ret, angle_mult;
 207
 208         if(forward < 0)
 209         {
 210                 forward = -forward;
 211                 down = -down;
 212         }
 213
 214         ret = vectoyaw('0 1 0' * down + '1 0 0' * forward);
 215
 216         angle_mult = forward / (800 + forward);
 217
 218         if(ret > 180)
 219                 return ret * angle_mult + 360 * (1 - angle_mult);
 220         else
 221                 return ret * angle_mult;
 222 }
 223
 224 void RaceCarPhysics()
 225 {
 226         // using this move type for "big rigs"
 227         // the engine does not push the entity!
 228
 229         float accel, steer, f, myspeed, steerfactor;
 230         vector angles_save, rigvel;
 231
 232         angles_save = self.angles;
 233         accel = bound(-1, self.movement_x / self.stat_sv_maxspeed, 1);
 234         steer = bound(-1, self.movement_y / self.stat_sv_maxspeed, 1);
 235
 236         if(g_bugrigs_reverse_speeding)
 237         {
 238                 if(accel < 0)
 239                 {
 240                         // back accel is DIGITAL
 241                         // to prevent speedhack
 242                         if(accel < -0.5)
 243                                 accel = -1;
 244                         else
 245                                 accel = 0;
 246                 }
 247         }
 248
 249         self.angles_x = 0;
 250         self.angles_z = 0;
 251         makevectors(self.angles); // new forward direction!
 252
 253         if(self.flags & FL_ONGROUND || g_bugrigs_air_steering)
 254         {
 255                 float upspeed, accelfactor;
 256
 257                 myspeed = self.velocity * v_forward;
 258                 upspeed = self.velocity * v_up;
 259
 260                 // responsiveness factor for steering and acceleration
 261                 f = 1 / (1 + pow(max(-myspeed, myspeed) / g_bugrigs_speed_ref, g_bugrigs_speed_pow));
 262                 //MAXIMA: f(v) := 1 / (1 + (v / g_bugrigs_speed_ref) ^ g_bugrigs_speed_pow);
 263
 264                 if(myspeed < 0 && g_bugrigs_reverse_spinning)
 265                         steerfactor = -myspeed * g_bugrigs_steer;
 266                 else
 267                         steerfactor = -myspeed * f * g_bugrigs_steer;
 268
 269                 if(myspeed < 0 && g_bugrigs_reverse_speeding)
 270                         accelfactor = g_bugrigs_accel;
 271                 else
 272                         accelfactor = f * g_bugrigs_accel;
 273                 //MAXIMA: accel(v) := f(v) * g_bugrigs_accel;
 274
 275                 if(accel < 0)
 276                 {
 277                         if(myspeed > 0)
 278                         {
 279                                 myspeed = max(0, myspeed - frametime * (g_bugrigs_friction_floor - g_bugrigs_friction_brake * accel));
 280                         }
 281                         else
 282                         {
 283                                 if(!g_bugrigs_reverse_speeding)
 284                                         myspeed = min(0, myspeed + frametime * g_bugrigs_friction_floor);
 285                         }
 286                 }
 287                 else
 288                 {
 289                         if(myspeed >= 0)
 290                         {
 291                                 myspeed = max(0, myspeed - frametime * g_bugrigs_friction_floor);
 292                         }
 293                         else
 294                         {
 295                                 if(g_bugrigs_reverse_stopping)
 296                                         myspeed = 0;
 297                                 else
 298                                         myspeed = min(0, myspeed + frametime * (g_bugrigs_friction_floor + g_bugrigs_friction_brake * accel));
 299                         }
 300                 }
 301                 // terminal velocity = velocity at which 50 == accelfactor, that is, 1549 units/sec
 302                 //MAXIMA: friction(v) := g_bugrigs_friction_floor;
 303
 304                 self.angles_y += steer * frametime * steerfactor; // apply steering
 305                 makevectors(self.angles); // new forward direction!
 306
 307                 myspeed += accel * accelfactor * frametime;
 308
 309                 rigvel = myspeed * v_forward + '0 0 1' * upspeed;
 310         }
 311         else
 312         {
 313                 myspeed = vlen(self.velocity);
 314
 315                 // responsiveness factor for steering and acceleration
 316                 f = 1 / (1 + pow(max(0, myspeed / g_bugrigs_speed_ref), g_bugrigs_speed_pow));
 317                 steerfactor = -myspeed * f;
 318                 self.angles_y += steer * frametime * steerfactor; // apply steering
 319
 320                 rigvel = self.velocity;
 321                 makevectors(self.angles); // new forward direction!
 322         }
 323
 324         rigvel = rigvel * max(0, 1 - vlen(rigvel) * g_bugrigs_friction_air * frametime);
 325         //MAXIMA: airfriction(v) := v * v * g_bugrigs_friction_air;
 326         //MAXIMA: total_acceleration(v) := accel(v) - friction(v) - airfriction(v);
 327         //MAXIMA: solve(total_acceleration(v) = 0, v);
 328
 329         if(g_bugrigs_planar_movement)
 330         {
 331                 vector rigvel_xy, neworigin, up;
 332                 float mt;
 333
 334                 rigvel_z -= frametime * autocvar_sv_gravity; // 4x gravity plays better
 335                 rigvel_xy = vec2(rigvel);
 336
 337                 if(g_bugrigs_planar_movement_car_jumping && !g_touchexplode) // touchexplode is a better way to handle collisions
 338                         mt = MOVE_NORMAL;
 339                 else
 340                         mt = MOVE_NOMONSTERS;
 341
 342                 tracebox(self.origin, self.mins, self.maxs, self.origin + '0 0 1024', mt, self);
 343                 up = trace_endpos - self.origin;
 344
 345                 // BUG RIGS: align the move to the surface instead of doing collision testing
 346                 // can we move?
 347                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos + rigvel_xy * frametime, mt, self);
 348
 349                 // align to surface
 350                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos - up + '0 0 1' * rigvel_z * frametime, mt, self);
 351
 352                 if(trace_fraction < 0.5)
 353                 {
 354                         trace_fraction = 1;
 355                         neworigin = self.origin;
 356                 }
 357                 else
 358                         neworigin = trace_endpos;
 359
 360                 if(trace_fraction < 1)
 361                 {
 362                         // now set angles_x so that the car points parallel to the surface
 363                         self.angles = vectoangles(
 364                                         '1 0 0' * v_forward_x * trace_plane_normal_z
 365                                         +
 366                                         '0 1 0' * v_forward_y * trace_plane_normal_z
 367                                         +
 368                                         '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y)
 369                                         );
 370                         self.flags |= FL_ONGROUND;
 371                 }
 372                 else
 373                 {
 374                         // now set angles_x so that the car points forward, but is tilted in velocity direction
 375                         self.flags &~= FL_ONGROUND;
 376                 }
 377
 378                 self.velocity = (neworigin - self.origin) * (1.0 / frametime);
 379                 self.movetype = MOVETYPE_NOCLIP;
 380         }
 381         else
 382         {
 383                 rigvel_z -= frametime * autocvar_sv_gravity; // 4x gravity plays better
 384                 self.velocity = rigvel;
 385                 self.movetype = MOVETYPE_FLY;
 386         }
 387
 388         trace_fraction = 1;
 389         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 4', MOVE_NORMAL, self);
 390         if(trace_fraction != 1)
 391         {
 392                 self.angles = vectoangles2(
 393                                 '1 0 0' * v_forward_x * trace_plane_normal_z
 394                                 +
 395                                 '0 1 0' * v_forward_y * trace_plane_normal_z
 396                                 +
 397                                 '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y),
 398                                 trace_plane_normal
 399                                 );
 400         }
 401         else
 402         {
 403                 vector vel_local;
 404
 405                 vel_local_x = v_forward * self.velocity;
 406                 vel_local_y = v_right * self.velocity;
 407                 vel_local_z = v_up * self.velocity;
 408
 409                 self.angles_x = racecar_angle(vel_local_x, vel_local_z);
 410                 self.angles_z = racecar_angle(-vel_local_y, vel_local_z);
 411         }
 412
 413         // smooth the angles
 414         vector vf1, vu1, smoothangles;
 415         makevectors(self.angles);
 416         f = bound(0, frametime * g_bugrigs_angle_smoothing, 1);
 417         if(f == 0)
 418                 f = 1;
 419         vf1 = v_forward * f;
 420         vu1 = v_up * f;
 421         makevectors(angles_save);
 422         vf1 = vf1 + v_forward * (1 - f);
 423         vu1 = vu1 + v_up * (1 - f);
 424         smoothangles = vectoangles2(vf1, vu1);
 425         self.angles_x = -smoothangles_x;
 426         self.angles_z =  smoothangles_z;
 427 }
 428
 429 float IsMoveInDirection(vector mv, float angle) // key mix factor
 430 {
 431         if(mv_x == 0 && mv_y == 0)
 432                 return 0; // avoid division by zero
 433         angle -= RAD2DEG * atan2(mv_y, mv_x);
 434         angle = remainder(angle, 360) / 45;
 435         if(angle >  1)
 436                 return 0;
 437         if(angle < -1)
 438                 return 0;
 439         return 1 - fabs(angle);
 440 }
 441
 442 float GeomLerp(float a, float lerp, float b)
 443 {
 444         if(a == 0)
 445         {
 446                 if(lerp < 1)
 447                         return 0;
 448                 else
 449                         return b;
 450         }
 451         if(b == 0)
 452         {
 453                 if(lerp > 0)
 454                         return 0;
 455                 else
 456                         return a;
 457         }
 458         return a * pow(fabs(b / a), lerp);
 459 }
 460
 461 void CPM_PM_Aircontrol(vector wishdir, float wishspeed)
 462 {
 463         float zspeed, xyspeed, dot, k;
 464
 465 #if 0
 466         // this doesn't play well with analog input
 467         if(self.movement_x == 0 || self.movement_y != 0)
 468                 return; // can't control movement if not moving forward or backward
 469         k = 32;
 470 #else
 471         k = 32 * (2 * IsMoveInDirection(self.movement, 0) - 1);
 472         if(k <= 0)
 473                 return;
 474 #endif
 475
 476         k *= bound(0, wishspeed / autocvar_sv_maxairspeed, 1);
 477
 478         zspeed = self.velocity_z;
 479         self.velocity_z = 0;
 480         xyspeed = vlen(self.velocity); self.velocity = normalize(self.velocity);
 481
 482         dot = self.velocity * wishdir;
 483
 484         if(dot > 0) // we can't change direction while slowing down
 485         {
 486                 k *= pow(dot, autocvar_sv_aircontrol_power)*frametime;
 487                 xyspeed = max(0, xyspeed - autocvar_sv_aircontrol_penalty * sqrt(max(0, 1 - dot*dot)) * k/32);
 488                 k *= autocvar_sv_aircontrol;
 489                 self.velocity = normalize(self.velocity * xyspeed + wishdir * k);
 490         }
 491
 492         self.velocity = self.velocity * xyspeed;
 493         self.velocity_z = zspeed;
 494 }
 495
 496 float AdjustAirAccelQW(float accelqw, float factor)
 497 {
 498         return copysign(bound(0.000001, 1 - (1 - fabs(accelqw)) * factor, 1), accelqw);
 499 }
 500
 501 // example config for alternate speed clamping:
 502 //   sv_airaccel_qw 0.8
 503 //   sv_airaccel_sideways_friction 0
 504 //   prvm_globalset server speedclamp_mode 1
 505 //     (or 2)
 506 void PM_Accelerate(vector wishdir, float wishspeed, float wishspeed0, float accel, float accelqw, float sidefric, float speedlimit)
 507 {
 508         float vel_straight;
 509         float vel_z;
 510         vector vel_perpend;
 511         float step;
 512
 513         vector vel_xy;
 514         float vel_xy_current;
 515         float vel_xy_backward, vel_xy_forward;
 516         float speedclamp;
 517
 518         speedclamp = (accelqw < 0);
 519         if(speedclamp)
 520                 accelqw = -accelqw;
 521
 522         if(cvar("sv_gameplayfix_q2airaccelerate"))
 523                 wishspeed0 = wishspeed;
 524
 525         vel_straight = self.velocity * wishdir;
 526         vel_z = self.velocity_z;
 527         vel_xy = vec2(self.velocity);
 528         vel_perpend = vel_xy - vel_straight * wishdir;
 529
 530         step = accel * frametime * wishspeed0;
 531
 532         vel_xy_current  = vlen(vel_xy);
 533         if(speedlimit)
 534                 accelqw = AdjustAirAccelQW(accelqw, (speedlimit - bound(wishspeed, vel_xy_current, speedlimit)) / max(1, speedlimit - wishspeed));
 535         vel_xy_forward  = vel_xy_current + bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
 536         vel_xy_backward = vel_xy_current - bound(0, wishspeed + vel_xy_current, step) * accelqw - step * (1 - accelqw);
 537         if(vel_xy_backward < 0)
 538                 vel_xy_backward = 0; // not that it REALLY occurs that this would cause wrong behaviour afterwards
 539
 540         vel_straight = vel_straight + bound(0, wishspeed - vel_straight, step) * accelqw + step * (1 - accelqw);
 541
 542         if(sidefric < 0 && (vel_perpend*vel_perpend))
 543                 // negative: only apply so much sideways friction to stay below the speed you could get by "braking"
 544         {
 545                 float f, fminimum;
 546                 f = max(0, 1 + frametime * wishspeed * sidefric);
 547                 fminimum = (vel_xy_backward*vel_xy_backward - vel_straight*vel_straight) / (vel_perpend*vel_perpend);
 548                 // this cannot be > 1
 549                 if(fminimum <= 0)
 550                         vel_perpend = vel_perpend * max(0, f);
 551                 else
 552                 {
 553                         fminimum = sqrt(fminimum);
 554                         vel_perpend = vel_perpend * max(fminimum, f);
 555                 }
 556         }
 557         else
 558                 vel_perpend = vel_perpend * max(0, 1 - frametime * wishspeed * sidefric);
 559
 560         vel_xy = vel_straight * wishdir + vel_perpend;
 561
 562         if(speedclamp)
 563         {
 564                 // ensure we don't get too fast or decelerate faster than we should
 565                 vel_xy_current = min(vlen(vel_xy), vel_xy_forward);
 566                 if(vel_xy_current > 0) // prevent division by zero
 567                         vel_xy = normalize(vel_xy) * vel_xy_current;
 568         }
 569
 570         self.velocity = vel_xy + vel_z * '0 0 1';
 571 }
 572
 573 void PM_AirAccelerate(vector wishdir, float wishspeed)
 574 {
 575         vector curvel, wishvel, acceldir, curdir;
 576         float addspeed, accelspeed, curspeed, f;
 577         float dot;
 578
 579         if(wishspeed == 0)
 580                 return;
 581
 582         curvel = self.velocity;
 583         curvel_z = 0;
 584         curspeed = vlen(curvel);
 585
 586         if(wishspeed > curspeed * 1.01)
 587         {
 588                 wishspeed = min(wishspeed, curspeed + autocvar_sv_warsowbunny_airforwardaccel * self.stat_sv_maxspeed * frametime);
 589         }
 590         else
 591         {
 592                 f = max(0, (autocvar_sv_warsowbunny_topspeed - curspeed) / (autocvar_sv_warsowbunny_topspeed - self.stat_sv_maxspeed));
 593                 wishspeed = max(curspeed, self.stat_sv_maxspeed) + autocvar_sv_warsowbunny_accel * f * self.stat_sv_maxspeed * frametime;
 594         }
 595         wishvel = wishdir * wishspeed;
 596         acceldir = wishvel - curvel;
 597         addspeed = vlen(acceldir);
 598         acceldir = normalize(acceldir);
 599
 600         accelspeed = min(addspeed, autocvar_sv_warsowbunny_turnaccel * self.stat_sv_maxspeed * frametime);
 601
 602         if(autocvar_sv_warsowbunny_backtosideratio < 1)
 603         {
 604                 curdir = normalize(curvel);
 605                 dot = acceldir * curdir;
 606                 if(dot < 0)
 607                         acceldir = acceldir - (1 - autocvar_sv_warsowbunny_backtosideratio) * dot * curdir;
 608         }
 609
 610         self.velocity += accelspeed * acceldir;
 611 }
 612
 613 .vector movement_old;
 614 .float buttons_old;
 615 .vector v_angle_old;
 616 .string lastclassname;
 617
 618 .float() PlayerPhysplug;
 619
 620 string specialcommand = "xwxwxsxsxaxdxaxdx1x ";
 621 .float specialcommand_pos;
 622 void SpecialCommand()
 623 {
 624 #ifdef TETRIS
 625         TetrisImpulse();
 626 #else
 627         if(!CheatImpulse(99))
 628                 print("A hollow voice says \"Plugh\".\n");
 629 #endif
 630 }
 631
 632 float speedaward_speed;
 633 string speedaward_holder;
 634 string speedaward_uid;
 635 void race_send_speedaward(float msg)
 636 {
 637         // send the best speed of the round
 638         WriteByte(msg, SVC_TEMPENTITY);
 639         WriteByte(msg, TE_CSQC_RACE);
 640         WriteByte(msg, RACE_NET_SPEED_AWARD);
 641         WriteInt24_t(msg, floor(speedaward_speed+0.5));
 642         WriteString(msg, speedaward_holder);
 643 }
 644
 645 float speedaward_alltimebest;
 646 string speedaward_alltimebest_holder;
 647 string speedaward_alltimebest_uid;
 648 void race_send_speedaward_alltimebest(float msg)
 649 {
 650         // send the best speed
 651         WriteByte(msg, SVC_TEMPENTITY);
 652         WriteByte(msg, TE_CSQC_RACE);
 653         WriteByte(msg, RACE_NET_SPEED_AWARD_BEST);
 654         WriteInt24_t(msg, floor(speedaward_alltimebest+0.5));
 655         WriteString(msg, speedaward_alltimebest_holder);
 656 }
 657
 658 string GetMapname(void);
 659 float speedaward_lastupdate;
 660 float speedaward_lastsent;
 661 void SV_PlayerPhysics()
 662 {
 663         local vector wishvel, wishdir, v;
 664         local float wishspeed, f, maxspd_mod, spd, maxairspd, airaccel, swampspd_mod, buttons;
 665         string temps;
 666         float buttons_prev;
 667         float not_allowed_to_move;
 668         string c;
 669
 670         maxspd_mod = 1;
 671         if(g_minstagib && (self.items & IT_INVINCIBLE))
 672                 maxspd_mod *= cvar("g_minstagib_speed_highspeed");
 673         if(self.ballcarried)
 674                 if(g_nexball)
 675                         maxspd_mod *= cvar("g_nexball_basketball_carrier_highspeed");
 676                 else if(g_keepaway)
 677                         maxspd_mod *= cvar("g_keepaway_ballcarrier_highspeed");
 678
 679         if(g_runematch)
 680         {
 681                 if(self.runes & RUNE_SPEED)
 682                 {
 683                         if(self.runes & CURSE_SLOW)
 684                                 maxspd_mod *= cvar("g_balance_rune_speed_combo_highspeed");
 685                         else
 686                                 maxspd_mod *= cvar("g_balance_rune_speed_highspeed");
 687                 }
 688                 else if(self.runes & CURSE_SLOW)
 689                 {
 690                         maxspd_mod *= cvar("g_balance_curse_slow_highspeed");
 691                 }
 692         }
 693         maxspd_mod *= autocvar_g_movement_highspeed;
 694
 695         // fix physics stats for g_movement_highspeed
 696         self.stat_sv_airaccel_qw = AdjustAirAccelQW(autocvar_sv_airaccel_qw, maxspd_mod);
 697         if(autocvar_sv_airstrafeaccel_qw)
 698                 self.stat_sv_airstrafeaccel_qw = AdjustAirAccelQW(autocvar_sv_airstrafeaccel_qw, maxspd_mod);
 699         else
 700                 self.stat_sv_airstrafeaccel_qw = 0;
 701         self.stat_sv_airspeedlimit_nonqw = autocvar_sv_airspeedlimit_nonqw * maxspd_mod;
 702         self.stat_sv_maxspeed = autocvar_sv_maxspeed * maxspd_mod; // also slow walking
 703
 704     if(self.PlayerPhysplug)
 705         if(self.PlayerPhysplug())
 706             return;
 707
 708         self.race_movetime_frac += frametime;
 709         f = floor(self.race_movetime_frac);
 710         self.race_movetime_frac -= f;
 711         self.race_movetime_count += f;
 712         self.race_movetime = self.race_movetime_frac + self.race_movetime_count;
 713
 714         anticheat_physics();
 715
 716         buttons = self.BUTTON_ATCK + 2 * self.BUTTON_JUMP + 4 * self.BUTTON_ATCK2 + 8 * self.BUTTON_ZOOM + 16 * self.BUTTON_CROUCH + 32 * self.BUTTON_HOOK + 64 * self.BUTTON_USE + 128 * (self.movement_x < 0) + 256 * (self.movement_x > 0) + 512 * (self.movement_y < 0) + 1024 * (self.movement_y > 0);
 717
 718         if(!buttons)
 719                 c = "x";
 720         else if(buttons == 1)
 721                 c = "1";
 722         else if(buttons == 2)
 723                 c = " ";
 724         else if(buttons == 128)
 725                 c = "s";
 726         else if(buttons == 256)
 727                 c = "w";
 728         else if(buttons == 512)
 729                 c = "a";
 730         else if(buttons == 1024)
 731                 c = "d";
 732         else
 733                 c = "?";
 734
 735         if(c == substring(specialcommand, self.specialcommand_pos, 1))
 736         {
 737                 self.specialcommand_pos += 1;
 738                 if(self.specialcommand_pos >= strlen(specialcommand))
 739                 {
 740                         self.specialcommand_pos = 0;
 741                         SpecialCommand();
 742                         return;
 743                 }
 744         }
 745         else if(self.specialcommand_pos && (c != substring(specialcommand, self.specialcommand_pos - 1, 1)))
 746                 self.specialcommand_pos = 0;
 747
 748         if(!sv_maxidle_spectatorsareidle || self.movetype == MOVETYPE_WALK)
 749         {
 750                 if(buttons != self.buttons_old || self.movement != self.movement_old || self.v_angle != self.v_angle_old)
 751                         self.parm_idlesince = time;
 752         }
 753         buttons_prev = self.buttons_old;
 754         self.buttons_old = buttons;
 755         self.movement_old = self.movement;
 756         self.v_angle_old = self.v_angle;
 757
 758         if(time < self.nickspamtime)
 759         if(self.nickspamcount >= cvar("g_nick_flood_penalty_yellow"))
 760         {
 761                 // slight annoyance for nick change scripts
 762                 self.movement = -1 * self.movement;
 763                 self.BUTTON_ATCK = self.BUTTON_JUMP = self.BUTTON_ATCK2 = self.BUTTON_ZOOM = self.BUTTON_CROUCH = self.BUTTON_HOOK = self.BUTTON_USE = 0;
 764
 765                 if(self.nickspamcount >= cvar("g_nick_flood_penalty_red")) // if you are persistent and the slight annoyance above does not stop you, I'll show you!
 766                 {
 767                         self.angles_x = random() * 360;
 768                         self.angles_y = random() * 360;
 769                         // at least I'm not forcing retardedview by also assigning to angles_z
 770                         self.fixangle = 1;
 771                 }
 772         }
 773
 774         if (self.punchangle != '0 0 0')
 775         {
 776                 f = vlen(self.punchangle) - 10 * frametime;
 777                 if (f > 0)
 778                         self.punchangle = normalize(self.punchangle) * f;
 779                 else
 780                         self.punchangle = '0 0 0';
 781         }
 782
 783         if (self.punchvector != '0 0 0')
 784         {
 785                 f = vlen(self.punchvector) - 30 * frametime;
 786                 if (f > 0)
 787                         self.punchvector = normalize(self.punchvector) * f;
 788                 else
 789                         self.punchvector = '0 0 0';
 790         }
 791
 792         if (clienttype(self) == CLIENTTYPE_BOT)
 793         {
 794                 if(playerdemo_read())
 795                         return;
 796                 bot_think();
 797         }
 798
 799         MUTATOR_CALLHOOK(PlayerPhysics);
 800
 801         self.items &~= IT_USING_JETPACK;
 802
 803         if(self.classname == "player")
 804         {
 805                 if(self.race_penalty)
 806                         if(time > self.race_penalty)
 807                                 self.race_penalty = 0;
 808
 809                 not_allowed_to_move = 0;
 810                 if(self.race_penalty)
 811                         not_allowed_to_move = 1;
 812                 if(!cvar("sv_ready_restart_after_countdown"))
 813                 if(time < game_starttime)
 814                         not_allowed_to_move = 1;
 815
 816                 if(not_allowed_to_move)
 817                 {
 818                         self.velocity = '0 0 0';
 819                         self.movetype = MOVETYPE_NONE;
 820                         self.disableclientprediction = 2;
 821                 }
 822                 else if(self.disableclientprediction == 2)
 823                 {
 824                         if(self.movetype == MOVETYPE_NONE)
 825                                 self.movetype = MOVETYPE_WALK;
 826                         self.disableclientprediction = 0;
 827                 }
 828         }
 829
 830         if (self.movetype == MOVETYPE_NONE)
 831                 return;
 832
 833         maxspd_mod = 1;
 834
 835         swampspd_mod = 1;
 836         if(self.in_swamp) {
 837                 swampspd_mod = self.swamp_slowdown; //cvar("g_balance_swamp_moverate");
 838         }
 839
 840         if(self.classname != "player")
 841         {
 842                 maxspd_mod = cvar("sv_spectator_speed_multiplier");
 843                 if(!self.spectatorspeed)
 844                         self.spectatorspeed = maxspd_mod;
 845                 if(self.impulse && self.impulse <= 19)
 846                 {
 847                         if(self.lastclassname != "player")
 848                         {
 849                                 if(self.impulse == 10 || self.impulse == 15 || self.impulse == 18)
 850                                         self.spectatorspeed = bound(1, self.spectatorspeed + 0.5, 5);
 851                                 else if(self.impulse == 11)
 852                                         self.spectatorspeed = maxspd_mod;
 853                                 else if(self.impulse == 12 || self.impulse == 16  || self.impulse == 19)
 854                                         self.spectatorspeed = bound(1, self.spectatorspeed - 0.5, 5);
 855                                 else if(self.impulse >= 1 && self.impulse <= 9)
 856                                         self.spectatorspeed = 1 + 0.5 * (self.impulse - 1);
 857                         } // otherwise just clear
 858                         self.impulse = 0;
 859                 }
 860                 maxspd_mod = self.spectatorspeed;
 861         }
 862
 863         spd = max(self.stat_sv_maxspeed, autocvar_sv_maxairspeed) * maxspd_mod * swampspd_mod;
 864         if(self.speed != spd)
 865         {
 866                 self.speed = spd;
 867                 temps = ftos(spd);
 868                 stuffcmd(self, strcat("cl_forwardspeed ", temps, "\n"));
 869                 stuffcmd(self, strcat("cl_backspeed ", temps, "\n"));
 870                 stuffcmd(self, strcat("cl_sidespeed ", temps, "\n"));
 871                 stuffcmd(self, strcat("cl_upspeed ", temps, "\n"));
 872         }
 873
 874         maxspd_mod *= swampspd_mod; // only one common speed modder please!
 875         swampspd_mod = 1;
 876
 877         // if dead, behave differently
 878         if (self.deadflag)
 879                 goto end;
 880
 881         if (!self.fixangle && !g_bugrigs)
 882         {
 883                 self.angles_x = 0;
 884                 self.angles_y = self.v_angle_y;
 885                 self.angles_z = 0;
 886         }
 887
 888         if(self.flags & FL_ONGROUND)
 889         if(self.wasFlying)
 890         {
 891                 self.wasFlying = 0;
 892
 893                 if(self.waterlevel < WATERLEVEL_SWIMMING)
 894                 if(time >= self.ladder_time)
 895                 if not(self.hook)
 896                 {
 897                         self.nextstep = time + 0.3 + random() * 0.1;
 898                         trace_dphitq3surfaceflags = 0;
 899                         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 1', MOVE_NOMONSTERS, self);
 900                         if not(trace_dphitq3surfaceflags & Q3SURFACEFLAG_NOSTEPS)
 901                         {
 902                                 if(trace_dphitq3surfaceflags & Q3SURFACEFLAG_METALSTEPS)
 903                                         GlobalSound(globalsound_metalfall, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 904                                 else
 905                                         GlobalSound(globalsound_fall, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 906                         }
 907                 }
 908         }
 909
 910         if(IsFlying(self))
 911                 self.wasFlying = 1;
 912
 913         if(self.classname == "player")
 914         {
 915                 if(self.flags & FL_ONGROUND)
 916                 {
 917                         if (cvar("g_multijump") > 0)
 918                                 self.multijump_count = 0;
 919                         else
 920                                 self.multijump_count = -2; // the cvar value for infinite jumps is -1, so this needs to be smaller
 921                 }
 922
 923                 if (self.BUTTON_JUMP)
 924                         PlayerJump ();
 925                 else
 926                         self.flags |= FL_JUMPRELEASED;
 927
 928                 if (self.waterlevel == WATERLEVEL_SWIMMING)
 929                         CheckWaterJump ();
 930                 self.prevjumpbutton = self.BUTTON_JUMP;
 931         }
 932
 933         if (self.flags & FL_WATERJUMP )
 934         {
 935                 self.velocity_x = self.movedir_x;
 936                 self.velocity_y = self.movedir_y;
 937                 if (time > self.teleport_time || self.waterlevel == WATERLEVEL_NONE)
 938                 {
 939                         self.flags &~= FL_WATERJUMP;
 940                         self.teleport_time = 0;
 941                 }
 942         }
 943         else if (g_bugrigs && self.classname == "player")
 944         {
 945                 RaceCarPhysics();
 946         }
 947         else if (self.movetype == MOVETYPE_NOCLIP || self.movetype == MOVETYPE_FLY)
 948         {
 949                 // noclipping or flying
 950                 self.flags &~= FL_ONGROUND;
 951
 952                 self.velocity = self.velocity * (1 - frametime * autocvar_sv_friction);
 953                 makevectors(self.v_angle);
 954                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
 955                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
 956                 // acceleration
 957                 wishdir = normalize(wishvel);
 958                 wishspeed = vlen(wishvel);
 959                 if (wishspeed > self.stat_sv_maxspeed*maxspd_mod)
 960                         wishspeed = self.stat_sv_maxspeed*maxspd_mod;
 961                 if (time >= self.teleport_time)
 962                         PM_Accelerate(wishdir, wishspeed, wishspeed, autocvar_sv_accelerate*maxspd_mod, 1, 0, 0);
 963         }
 964         else if (self.waterlevel >= WATERLEVEL_SWIMMING)
 965         {
 966                 // swimming
 967                 self.flags &~= FL_ONGROUND;
 968
 969                 makevectors(self.v_angle);
 970                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
 971                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
 972                 if (wishvel == '0 0 0')
 973                         wishvel = '0 0 -60'; // drift towards bottom
 974
 975                 wishdir = normalize(wishvel);
 976                 wishspeed = vlen(wishvel);
 977                 if (wishspeed > self.stat_sv_maxspeed*maxspd_mod)
 978                         wishspeed = self.stat_sv_maxspeed*maxspd_mod;
 979                 wishspeed = wishspeed * 0.7;
 980
 981                 // water friction
 982                 self.velocity = self.velocity * (1 - frametime * autocvar_sv_friction);
 983
 984                 // water acceleration
 985                 PM_Accelerate(wishdir, wishspeed, wishspeed, autocvar_sv_accelerate*maxspd_mod, 1, 0, 0);
 986         }
 987         else if (time < self.ladder_time)
 988         {
 989                 // on a spawnfunc_func_ladder or swimming in spawnfunc_func_water
 990                 self.flags &~= FL_ONGROUND;
 991
 992                 self.velocity = self.velocity * (1 - frametime * autocvar_sv_friction);
 993                 makevectors(self.v_angle);
 994                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
 995                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
 996                 if (self.gravity)
 997                         self.velocity_z = self.velocity_z + self.gravity * autocvar_sv_gravity * frametime;
 998                 else
 999                         self.velocity_z = self.velocity_z + autocvar_sv_gravity * frametime;
1000                 if (self.ladder_entity.classname == "func_water")
1001                 {
1002                         f = vlen(wishvel);
1003                         if (f > self.ladder_entity.speed)
1004                                 wishvel = wishvel * (self.ladder_entity.speed / f);
1005
1006                         self.watertype = self.ladder_entity.skin;
1007                         f = self.ladder_entity.origin_z + self.ladder_entity.maxs_z;
1008                         if ((self.origin_z + self.view_ofs_z) < f)
1009                                 self.waterlevel = WATERLEVEL_SUBMERGED;
1010                         else if ((self.origin_z + (self.mins_z + self.maxs_z) * 0.5) < f)
1011                                 self.waterlevel = WATERLEVEL_SWIMMING;
1012                         else if ((self.origin_z + self.mins_z + 1) < f)
1013                                 self.waterlevel = WATERLEVEL_WETFEET;
1014                         else
1015                         {
1016                                 self.waterlevel = WATERLEVEL_NONE;
1017                                 self.watertype = CONTENT_EMPTY;
1018                         }
1019                 }
1020                 // acceleration
1021                 wishdir = normalize(wishvel);
1022                 wishspeed = vlen(wishvel);
1023                 if (wishspeed > self.stat_sv_maxspeed*maxspd_mod)
1024                         wishspeed = self.stat_sv_maxspeed*maxspd_mod;
1025                 if (time >= self.teleport_time)
1026                 {
1027                         // water acceleration
1028                         PM_Accelerate(wishdir, wishspeed, wishspeed, autocvar_sv_accelerate*maxspd_mod, 1, 0, 0);
1029                 }
1030         }
1031         else if ((self.items & IT_JETPACK) && self.BUTTON_HOOK && (!cvar("g_jetpack_fuel") || self.ammo_fuel >= 0.01 || self.items & IT_UNLIMITED_WEAPON_AMMO))
1032         {
1033                 //makevectors(self.v_angle_y * '0 1 0');
1034                 makevectors(self.v_angle);
1035                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1036                 // add remaining speed as Z component
1037                 maxairspd = autocvar_sv_maxairspeed*max(1, maxspd_mod);
1038                 // fix speedhacks :P
1039                 wishvel = normalize(wishvel) * min(vlen(wishvel) / maxairspd, 1);
1040                 // add the unused velocity as up component
1041                 wishvel_z = 0;
1042
1043                 // if(self.BUTTON_JUMP)
1044                         wishvel_z = sqrt(max(0, 1 - wishvel * wishvel));
1045
1046                 // it is now normalized, so...
1047                 float a_side, a_up, a_add, a_diff;
1048                 a_side = cvar("g_jetpack_acceleration_side");
1049                 a_up = cvar("g_jetpack_acceleration_up");
1050                 a_add = cvar("g_jetpack_antigravity") * autocvar_sv_gravity;
1051
1052                 wishvel_x *= a_side;
1053                 wishvel_y *= a_side;
1054                 wishvel_z *= a_up;
1055                 wishvel_z += a_add;
1056
1057                 float best;
1058                 best = 0;
1059                 //////////////////////////////////////////////////////////////////////////////////////
1060                 // finding the maximum over all vectors of above form
1061                 // with wishvel having an absolute value of 1
1062                 //////////////////////////////////////////////////////////////////////////////////////
1063                 // we're finding the maximum over
1064                 //   f(a_side, a_up, a_add, z) := a_side * (1 - z^2) + (a_add + a_up * z)^2;
1065                 // for z in the range from -1 to 1
1066                 //////////////////////////////////////////////////////////////////////////////////////
1067                 // maximum is EITHER attained at the single extreme point:
1068                 a_diff = a_side * a_side - a_up * a_up;
1069                 if(a_diff != 0)
1070                 {
1071                         f = a_add * a_up / a_diff; // this is the zero of diff(f(a_side, a_up, a_add, z), z)
1072                         if(f > -1 && f < 1) // can it be attained?
1073                         {
1074                                 best = (a_diff + a_add * a_add) * (a_diff + a_up * a_up) / a_diff;
1075                                 //print("middle\n");
1076                         }
1077                 }
1078                 // OR attained at z = 1:
1079                 f = (a_up + a_add) * (a_up + a_add);
1080                 if(f > best)
1081                 {
1082                         best = f;
1083                         //print("top\n");
1084                 }
1085                 // OR attained at z = -1:
1086                 f = (a_up - a_add) * (a_up - a_add);
1087                 if(f > best)
1088                 {
1089                         best = f;
1090                         //print("bottom\n");
1091                 }
1092                 best = sqrt(best);
1093                 //////////////////////////////////////////////////////////////////////////////////////
1094
1095                 //print("best possible acceleration: ", ftos(best), "\n");
1096
1097                 float fxy, fz;
1098                 fxy = bound(0, 1 - (self.velocity * normalize(wishvel_x * '1 0 0' + wishvel_y * '0 1 0')) / cvar("g_jetpack_maxspeed_side"), 1);
1099                 if(wishvel_z - autocvar_sv_gravity > 0)
1100                         fz = bound(0, 1 - self.velocity_z / cvar("g_jetpack_maxspeed_up"), 1);
1101                 else
1102                         fz = bound(0, 1 + self.velocity_z / cvar("g_jetpack_maxspeed_up"), 1);
1103
1104                 float fvel;
1105                 fvel = vlen(wishvel);
1106                 wishvel_x *= fxy;
1107                 wishvel_y *= fxy;
1108                 wishvel_z = (wishvel_z - autocvar_sv_gravity) * fz + autocvar_sv_gravity;
1109
1110                 fvel = min(1, vlen(wishvel) / best);
1111                 if(cvar("g_jetpack_fuel") && !(self.items & IT_UNLIMITED_WEAPON_AMMO))
1112                         f = min(1, self.ammo_fuel / (cvar("g_jetpack_fuel") * frametime * fvel));
1113                 else
1114                         f = 1;
1115
1116                 //print("this acceleration: ", ftos(vlen(wishvel) * f), "\n");
1117
1118                 if (f > 0 && wishvel != '0 0 0')
1119                 {
1120                         self.velocity = self.velocity + wishvel * f * frametime;
1121                         if not(self.items & IT_UNLIMITED_WEAPON_AMMO)
1122                                 self.ammo_fuel -= cvar("g_jetpack_fuel") * frametime * fvel * f;
1123                         self.flags &~= FL_ONGROUND;
1124                         self.items |= IT_USING_JETPACK;
1125
1126                         // jetpack also inhibits health regeneration, but only for 1 second
1127                         self.pauseregen_finished = max(self.pauseregen_finished, time + cvar("g_balance_pause_fuel_regen"));
1128                 }
1129         }
1130         else if (self.flags & FL_ONGROUND)
1131         {
1132                 // we get here if we ran out of ammo
1133                 if((self.items & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32))
1134                         sprint(self, "You don't have any fuel for the ^2Jetpack\n");
1135
1136                 // walking
1137                 makevectors(self.v_angle_y * '0 1 0');
1138                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1139
1140                 if(!(self.lastflags & FL_ONGROUND))
1141                 {
1142                         if(cvar("speedmeter"))
1143                                 dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
1144                         if(self.lastground < time - 0.3)
1145                                 self.velocity = self.velocity * (1 - cvar("sv_friction_on_land"));
1146                         if(self.jumppadcount > 1)
1147                                 dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
1148                         self.jumppadcount = 0;
1149                 }
1150
1151 #ifdef LETS_TEST_FTEQCC
1152                 if(self.velocity_x || self.velocity_y)
1153                 {
1154                         // good
1155                 }
1156                 else
1157                 {
1158                         if(self.velocity_x)
1159                                 checkclient();
1160                         if(self.velocity_y)
1161                                 checkclient();
1162                 }
1163 #endif
1164
1165                 v = self.velocity;
1166                 v_z = 0;
1167                 f = vlen(v);
1168                 if(f > 0)
1169                 {
1170                         if (f < autocvar_sv_stopspeed)
1171                                 f = 1 - frametime * (autocvar_sv_stopspeed / f) * autocvar_sv_friction;
1172                         else
1173                                 f = 1 - frametime * autocvar_sv_friction;
1174                         if (f > 0)
1175                                 self.velocity = self.velocity * f;
1176                         else
1177                                 self.velocity = '0 0 0';
1178                 }
1179
1180                 // acceleration
1181                 wishdir = normalize(wishvel);
1182                 wishspeed = vlen(wishvel);
1183                 if (wishspeed > self.stat_sv_maxspeed*maxspd_mod)
1184                         wishspeed = self.stat_sv_maxspeed*maxspd_mod;
1185                 if (self.crouch)
1186                         wishspeed = wishspeed * 0.5;
1187                 if (time >= self.teleport_time)
1188                         PM_Accelerate(wishdir, wishspeed, wishspeed, autocvar_sv_accelerate*maxspd_mod, 1, 0, 0);
1189         }
1190         else
1191         {
1192                 float wishspeed0;
1193                 // we get here if we ran out of ammo
1194                 if((self.items & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32))
1195                         sprint(self, "You don't have any fuel for the ^2Jetpack\n");
1196
1197                 if(maxspd_mod < 1)
1198                 {
1199                         maxairspd = autocvar_sv_maxairspeed*maxspd_mod;
1200                         airaccel = autocvar_sv_airaccelerate*maxspd_mod;
1201                 }
1202                 else
1203                 {
1204                         maxairspd = autocvar_sv_maxairspeed;
1205                         airaccel = autocvar_sv_airaccelerate;
1206                 }
1207                 // airborn
1208                 makevectors(self.v_angle_y * '0 1 0');
1209                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1210                 // acceleration
1211                 wishdir = normalize(wishvel);
1212                 wishspeed = wishspeed0 = vlen(wishvel);
1213                 if (wishspeed0 > self.stat_sv_maxspeed*maxspd_mod)
1214                         wishspeed0 = self.stat_sv_maxspeed*maxspd_mod;
1215                 if (wishspeed > maxairspd)
1216                         wishspeed = maxairspd;
1217                 if (self.crouch)
1218                         wishspeed = wishspeed * 0.5;
1219                 if (time >= self.teleport_time)
1220                 {
1221                         float accelerating;
1222                         float wishspeed2;
1223                         float airaccelqw;
1224                         float strafity;
1225
1226                         airaccelqw = self.stat_sv_airaccel_qw;
1227                         accelerating = (self.velocity * wishdir > 0);
1228                         wishspeed2 = wishspeed;
1229
1230                         // CPM
1231                         if(autocvar_sv_airstopaccelerate)
1232                         {
1233                                 vector curdir;
1234                                 curdir = self.velocity;
1235                                 curdir_z = 0;
1236                                 curdir = normalize(curdir);
1237                                 airaccel = airaccel + (autocvar_sv_airstopaccelerate*maxspd_mod - airaccel) * max(0, -(curdir * wishdir));
1238                         }
1239                         // note that for straight forward jumping:
1240                         // step = accel * frametime * wishspeed0;
1241                         // accel  = bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
1242                         // -->
1243                         // dv/dt = accel * maxspeed (when slow)
1244                         // dv/dt = accel * maxspeed * (1 - accelqw) (when fast)
1245                         // log dv/dt = logaccel + logmaxspeed (when slow)
1246                         // log dv/dt = logaccel + logmaxspeed + log(1 - accelqw) (when fast)
1247                         strafity = IsMoveInDirection(self.movement, -90) + IsMoveInDirection(self.movement, +90); // if one is nonzero, other is always zero
1248                         if(autocvar_sv_maxairstrafespeed)
1249                                 wishspeed = min(wishspeed, GeomLerp(autocvar_sv_maxairspeed*maxspd_mod, strafity, autocvar_sv_maxairstrafespeed*maxspd_mod));
1250                         if(autocvar_sv_airstrafeaccelerate)
1251                                 airaccel = GeomLerp(airaccel, strafity, autocvar_sv_airstrafeaccelerate*maxspd_mod);
1252                         if(self.stat_sv_airstrafeaccel_qw)
1253                                 airaccelqw = copysign(1-GeomLerp(1-fabs(self.stat_sv_airaccel_qw), strafity, 1-fabs(self.stat_sv_airstrafeaccel_qw)), ((strafity > 0.5) ? self.stat_sv_airstrafeaccel_qw : self.stat_sv_airaccel_qw));
1254                         // !CPM
1255
1256                         if(autocvar_sv_warsowbunny_turnaccel && accelerating && self.movement_y == 0 && self.movement_x != 0)
1257                                 PM_AirAccelerate(wishdir, wishspeed);
1258                         else
1259                                 PM_Accelerate(wishdir, wishspeed, wishspeed0, airaccel, airaccelqw, autocvar_sv_airaccel_sideways_friction / maxairspd, self.stat_sv_airspeedlimit_nonqw);
1260
1261                         if(autocvar_sv_aircontrol)
1262                                 CPM_PM_Aircontrol(wishdir, wishspeed2);
1263                 }
1264         }
1265
1266         if((g_cts || g_race) && self.classname != "observer") {
1267                 if(vlen(self.velocity - self.velocity_z * '0 0 1') > speedaward_speed) {
1268                         speedaward_speed = vlen(self.velocity - self.velocity_z * '0 0 1');
1269                         speedaward_holder = self.netname;
1270                         speedaward_uid = self.crypto_idfp;
1271                         speedaward_lastupdate = time;
1272                 }
1273                 if(speedaward_speed > speedaward_lastsent && time - speedaward_lastupdate > 1) {
1274                         string rr;
1275                         if(g_cts)
1276                                 rr = CTS_RECORD;
1277                         else
1278                                 rr = RACE_RECORD;
1279                         race_send_speedaward(MSG_ALL);
1280                         speedaward_lastsent = speedaward_speed;
1281                         if (speedaward_speed > speedaward_alltimebest && speedaward_uid != "") {
1282                                 speedaward_alltimebest = speedaward_speed;
1283                                 speedaward_alltimebest_holder = speedaward_holder;
1284                                 speedaward_alltimebest_uid = speedaward_uid;
1285                                 db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/speed"), ftos(speedaward_alltimebest));
1286                                 db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/crypto_idfp"), speedaward_alltimebest_uid);
1287                                 race_send_speedaward_alltimebest(MSG_ALL);
1288                         }
1289                 }
1290         }
1291
1292         float xyspeed;
1293         xyspeed = vlen('1 0 0' * self.velocity_x + '0 1 0' * self.velocity_y);
1294         if(self.weapon == WEP_NEX && cvar("g_balance_nex_charge") && cvar("g_balance_nex_charge_velocity_rate") && xyspeed > cvar("g_balance_nex_charge_minspeed"))
1295         {
1296                 // add a maximum of charge_velocity_rate when going fast (f = 1), gradually increasing from minspeed (f = 0) to maxspeed
1297                 xyspeed = min(xyspeed, cvar("g_balance_nex_charge_maxspeed"));
1298                 f = (xyspeed - cvar("g_balance_nex_charge_minspeed")) / (cvar("g_balance_nex_charge_maxspeed") - cvar("g_balance_nex_charge_minspeed"));
1299                 // add the extra charge
1300                 self.nex_charge = min(1, self.nex_charge + cvar("g_balance_nex_charge_velocity_rate") * f * frametime);
1301         }
1302 :end
1303         if(self.flags & FL_ONGROUND)
1304                 self.lastground = time;
1305
1306         self.lastflags = self.flags;
1307         self.lastclassname = self.classname;
1308 };