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 // client side physics
  14 float Physics_Valid(string thecvar)
  15 {
  16         if(!autocvar_g_physics_clientselect) { return FALSE; }
  17
  18         string l = strcat(" ", autocvar_g_physics_clientselect_options, " ");
  19
  20         if(strstrofs(l, strcat(" ", thecvar, " "), 0) >= 0)
  21                 return TRUE;
  22
  23         return FALSE;
  24 }
  25
  26 float Physics_ClientOption(entity pl, string option)
  27 {
  28         if (Physics_Valid(pl.cvar_cl_physics))
  29         {
  30                 string var = sprintf("g_physics_%s_%s", pl.cvar_cl_physics, option);
  31                 if (cvar_type(var) & 1)
  32                         return cvar(var);
  33         }
  34         return cvar(strcat("sv_", option));
  35 }
  36
  37 /*
  38 =============
  39 PlayerJump
  40
  41 When you press the jump key
  42 returns TRUE if handled
  43 =============
  44 */
  45 float PlayerJump (void)
  46 {
  47         if(self.frozen)
  48                 return TRUE; // no jumping in freezetag when frozen
  49
  50         if(self.player_blocked)
  51                 return TRUE; // no jumping while blocked
  52
  53         float doublejump = FALSE;
  54         float mjumpheight = self.stat_sv_jumpvelocity;
  55
  56         player_multijump = doublejump;
  57         player_jumpheight = mjumpheight;
  58         if(MUTATOR_CALLHOOK(PlayerJump))
  59                 return TRUE;
  60
  61         doublejump = player_multijump;
  62         mjumpheight = player_jumpheight;
  63
  64         if (autocvar_sv_doublejump)
  65         {
  66                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
  67                 if (trace_fraction < 1 && trace_plane_normal_z > 0.7)
  68                 {
  69                         doublejump = TRUE;
  70
  71                         // we MUST clip velocity here!
  72                         float f;
  73                         f = self.velocity * trace_plane_normal;
  74                         if(f < 0)
  75                                 self.velocity -= f * trace_plane_normal;
  76                 }
  77         }
  78
  79         if (self.waterlevel >= WATERLEVEL_SWIMMING)
  80         {
  81                 self.velocity_z = self.stat_sv_maxspeed * 0.7;
  82                 return TRUE;
  83         }
  84
  85         if (!doublejump)
  86                 if (!(self.flags & FL_ONGROUND))
  87                         return !(self.flags & FL_JUMPRELEASED);
  88
  89         if(self.cvar_cl_movement_track_canjump)
  90                 if (!(self.flags & FL_JUMPRELEASED))
  91                         return TRUE;
  92
  93         // sv_jumpspeedcap_min/sv_jumpspeedcap_max act as baseline
  94         // velocity bounds.  Final velocity is bound between (jumpheight *
  95         // min + jumpheight) and (jumpheight * max + jumpheight);
  96
  97         if(autocvar_sv_jumpspeedcap_min != "")
  98         {
  99                 float minjumpspeed;
 100
 101                 minjumpspeed = mjumpheight * stof(autocvar_sv_jumpspeedcap_min);
 102
 103                 if (self.velocity_z < minjumpspeed)
 104                         mjumpheight += minjumpspeed - self.velocity_z;
 105         }
 106
 107         if(autocvar_sv_jumpspeedcap_max != "")
 108         {
 109                 // don't do jump speedcaps on ramps to preserve old xonotic ramjump style
 110                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
 111
 112                 if(!(trace_fraction < 1 && trace_plane_normal_z < 0.98 && autocvar_sv_jumpspeedcap_max_disable_on_ramps))
 113                 {
 114                         float maxjumpspeed;
 115
 116                         maxjumpspeed = mjumpheight * stof(autocvar_sv_jumpspeedcap_max);
 117
 118                         if (self.velocity_z > maxjumpspeed)
 119                                 mjumpheight -= self.velocity_z - maxjumpspeed;
 120                 }
 121         }
 122
 123         if(!(self.lastflags & FL_ONGROUND))
 124         {
 125                 if(autocvar_speedmeter)
 126                         dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
 127                 if(self.lastground < time - 0.3)
 128                 {
 129                         self.velocity_x *= (1 - autocvar_sv_friction_on_land);
 130                         self.velocity_y *= (1 - autocvar_sv_friction_on_land);
 131                 }
 132                 if(self.jumppadcount > 1)
 133                         dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
 134                 self.jumppadcount = 0;
 135         }
 136
 137         self.velocity_z = self.velocity_z + mjumpheight;
 138         self.oldvelocity_z = self.velocity_z;
 139
 140         self.flags &= ~FL_ONGROUND;
 141         self.flags &= ~FL_JUMPRELEASED;
 142
 143         animdecide_setaction(self, ANIMACTION_JUMP, TRUE);
 144
 145         if(autocvar_g_jump_grunt)
 146                 PlayerSound(playersound_jump, CH_PLAYER, VOICETYPE_PLAYERSOUND);
 147
 148         self.restart_jump = -1; // restart jump anim next time
 149         // value -1 is used to not use the teleport bit (workaround for tiny hitch when re-jumping)
 150         return TRUE;
 151 }
 152 void CheckWaterJump()
 153 {
 154         vector start, end;
 155
 156 // check for a jump-out-of-water
 157         makevectors (self.angles);
 158         start = self.origin;
 159         start_z = start_z + 8;
 160         v_forward_z = 0;
 161         normalize(v_forward);
 162         end = start + v_forward*24;
 163         traceline (start, end, TRUE, self);
 164         if (trace_fraction < 1)
 165         {       // solid at waist
 166                 start_z = start_z + self.maxs_z - 8;
 167                 end = start + v_forward*24;
 168                 self.movedir = trace_plane_normal * -50;
 169                 traceline (start, end, TRUE, self);
 170                 if (trace_fraction == 1)
 171                 {       // open at eye level
 172                         self.flags |= FL_WATERJUMP;
 173                         self.velocity_z = 225;
 174                         self.flags &= ~FL_JUMPRELEASED;
 175                         self.teleport_time = time + 2;  // safety net
 176                         return;
 177                 }
 178         }
 179 }
 180
 181 .float jetpack_stopped;
 182 // Hack: shouldn't need to know about this
 183 .float multijump_count;
 184 void CheckPlayerJump()
 185 {
 186         float was_flying = self.items & IT_USING_JETPACK;
 187
 188         if (self.cvar_cl_jetpack_jump < 2)
 189                 self.items &= ~IT_USING_JETPACK;
 190
 191         if (self.BUTTON_JUMP || self.BUTTON_JETPACK)
 192         {
 193                 float air_jump = !PlayerJump() || self.multijump_count > 0; // PlayerJump() has important side effects
 194                 float activate = self.cvar_cl_jetpack_jump && air_jump && self.BUTTON_JUMP || self.BUTTON_JETPACK;
 195                 float has_fuel = !autocvar_g_jetpack_fuel || self.ammo_fuel || self.items & IT_UNLIMITED_WEAPON_AMMO;
 196                 if (!(self.items & IT_JETPACK)) { }
 197                 else if (self.jetpack_stopped) { }
 198                 else if (!has_fuel)
 199                 {
 200                         if (was_flying) // TODO: ran out of fuel message
 201                                 Send_Notification(NOTIF_ONE, self, MSG_INFO, INFO_JETPACK_NOFUEL);
 202                         else if (activate)
 203                                 Send_Notification(NOTIF_ONE, self, MSG_INFO, INFO_JETPACK_NOFUEL);
 204                         self.jetpack_stopped = TRUE;
 205                         self.items &= ~IT_USING_JETPACK;
 206                 }
 207                 else if (activate && !self.frozen)
 208                         self.items |= IT_USING_JETPACK;
 209         }
 210         else
 211         {
 212                 self.jetpack_stopped = FALSE;
 213                 self.items &= ~IT_USING_JETPACK;
 214         }
 215         if (!self.BUTTON_JUMP)
 216                 self.flags |= FL_JUMPRELEASED;
 217
 218         if (self.waterlevel == WATERLEVEL_SWIMMING)
 219                 CheckWaterJump ();
 220 }
 221
 222 float racecar_angle(float forward, float down)
 223 {
 224         float ret, angle_mult;
 225
 226         if(forward < 0)
 227         {
 228                 forward = -forward;
 229                 down = -down;
 230         }
 231
 232         ret = vectoyaw('0 1 0' * down + '1 0 0' * forward);
 233
 234         angle_mult = forward / (800 + forward);
 235
 236         if(ret > 180)
 237                 return ret * angle_mult + 360 * (1 - angle_mult);
 238         else
 239                 return ret * angle_mult;
 240 }
 241
 242 void RaceCarPhysics()
 243 {
 244         // using this move type for "big rigs"
 245         // the engine does not push the entity!
 246
 247         float accel, steer, f, myspeed, steerfactor;
 248         vector angles_save, rigvel;
 249
 250         angles_save = self.angles;
 251         accel = bound(-1, self.movement_x / self.stat_sv_maxspeed, 1);
 252         steer = bound(-1, self.movement_y / self.stat_sv_maxspeed, 1);
 253
 254         if(g_bugrigs_reverse_speeding)
 255         {
 256                 if(accel < 0)
 257                 {
 258                         // back accel is DIGITAL
 259                         // to prevent speedhack
 260                         if(accel < -0.5)
 261                                 accel = -1;
 262                         else
 263                                 accel = 0;
 264                 }
 265         }
 266
 267         self.angles_x = 0;
 268         self.angles_z = 0;
 269         makevectors(self.angles); // new forward direction!
 270
 271         if(self.flags & FL_ONGROUND || g_bugrigs_air_steering)
 272         {
 273                 float upspeed, accelfactor;
 274
 275                 myspeed = self.velocity * v_forward;
 276                 upspeed = self.velocity * v_up;
 277
 278                 // responsiveness factor for steering and acceleration
 279                 f = 1 / (1 + pow(max(-myspeed, myspeed) / g_bugrigs_speed_ref, g_bugrigs_speed_pow));
 280                 //MAXIMA: f(v) := 1 / (1 + (v / g_bugrigs_speed_ref) ^ g_bugrigs_speed_pow);
 281
 282                 if(myspeed < 0 && g_bugrigs_reverse_spinning)
 283                         steerfactor = -myspeed * g_bugrigs_steer;
 284                 else
 285                         steerfactor = -myspeed * f * g_bugrigs_steer;
 286
 287                 if(myspeed < 0 && g_bugrigs_reverse_speeding)
 288                         accelfactor = g_bugrigs_accel;
 289                 else
 290                         accelfactor = f * g_bugrigs_accel;
 291                 //MAXIMA: accel(v) := f(v) * g_bugrigs_accel;
 292
 293                 if(accel < 0)
 294                 {
 295                         if(myspeed > 0)
 296                         {
 297                                 myspeed = max(0, myspeed - frametime * (g_bugrigs_friction_floor - g_bugrigs_friction_brake * accel));
 298                         }
 299                         else
 300                         {
 301                                 if(!g_bugrigs_reverse_speeding)
 302                                         myspeed = min(0, myspeed + frametime * g_bugrigs_friction_floor);
 303                         }
 304                 }
 305                 else
 306                 {
 307                         if(myspeed >= 0)
 308                         {
 309                                 myspeed = max(0, myspeed - frametime * g_bugrigs_friction_floor);
 310                         }
 311                         else
 312                         {
 313                                 if(g_bugrigs_reverse_stopping)
 314                                         myspeed = 0;
 315                                 else
 316                                         myspeed = min(0, myspeed + frametime * (g_bugrigs_friction_floor + g_bugrigs_friction_brake * accel));
 317                         }
 318                 }
 319                 // terminal velocity = velocity at which 50 == accelfactor, that is, 1549 units/sec
 320                 //MAXIMA: friction(v) := g_bugrigs_friction_floor;
 321
 322                 self.angles_y += steer * frametime * steerfactor; // apply steering
 323                 makevectors(self.angles); // new forward direction!
 324
 325                 myspeed += accel * accelfactor * frametime;
 326
 327                 rigvel = myspeed * v_forward + '0 0 1' * upspeed;
 328         }
 329         else
 330         {
 331                 myspeed = vlen(self.velocity);
 332
 333                 // responsiveness factor for steering and acceleration
 334                 f = 1 / (1 + pow(max(0, myspeed / g_bugrigs_speed_ref), g_bugrigs_speed_pow));
 335                 steerfactor = -myspeed * f;
 336                 self.angles_y += steer * frametime * steerfactor; // apply steering
 337
 338                 rigvel = self.velocity;
 339                 makevectors(self.angles); // new forward direction!
 340         }
 341
 342         rigvel = rigvel * max(0, 1 - vlen(rigvel) * g_bugrigs_friction_air * frametime);
 343         //MAXIMA: airfriction(v) := v * v * g_bugrigs_friction_air;
 344         //MAXIMA: total_acceleration(v) := accel(v) - friction(v) - airfriction(v);
 345         //MAXIMA: solve(total_acceleration(v) = 0, v);
 346
 347         if(g_bugrigs_planar_movement)
 348         {
 349                 vector rigvel_xy, neworigin, up;
 350                 float mt;
 351
 352                 rigvel_z -= frametime * autocvar_sv_gravity; // 4x gravity plays better
 353                 rigvel_xy = vec2(rigvel);
 354
 355                 if(g_bugrigs_planar_movement_car_jumping)
 356                         mt = MOVE_NORMAL;
 357                 else
 358                         mt = MOVE_NOMONSTERS;
 359
 360                 tracebox(self.origin, self.mins, self.maxs, self.origin + '0 0 1024', mt, self);
 361                 up = trace_endpos - self.origin;
 362
 363                 // BUG RIGS: align the move to the surface instead of doing collision testing
 364                 // can we move?
 365                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos + rigvel_xy * frametime, mt, self);
 366
 367                 // align to surface
 368                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos - up + '0 0 1' * rigvel_z * frametime, mt, self);
 369
 370                 if(trace_fraction < 0.5)
 371                 {
 372                         trace_fraction = 1;
 373                         neworigin = self.origin;
 374                 }
 375                 else
 376                         neworigin = trace_endpos;
 377
 378                 if(trace_fraction < 1)
 379                 {
 380                         // now set angles_x so that the car points parallel to the surface
 381                         self.angles = vectoangles(
 382                                         '1 0 0' * v_forward_x * trace_plane_normal_z
 383                                         +
 384                                         '0 1 0' * v_forward_y * trace_plane_normal_z
 385                                         +
 386                                         '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y)
 387                                         );
 388                         self.flags |= FL_ONGROUND;
 389                 }
 390                 else
 391                 {
 392                         // now set angles_x so that the car points forward, but is tilted in velocity direction
 393                         self.flags &= ~FL_ONGROUND;
 394                 }
 395
 396                 self.velocity = (neworigin - self.origin) * (1.0 / frametime);
 397                 self.movetype = MOVETYPE_NOCLIP;
 398         }
 399         else
 400         {
 401                 rigvel_z -= frametime * autocvar_sv_gravity; // 4x gravity plays better
 402                 self.velocity = rigvel;
 403                 self.movetype = MOVETYPE_FLY;
 404         }
 405
 406         trace_fraction = 1;
 407         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 4', MOVE_NORMAL, self);
 408         if(trace_fraction != 1)
 409         {
 410                 self.angles = vectoangles2(
 411                                 '1 0 0' * v_forward_x * trace_plane_normal_z
 412                                 +
 413                                 '0 1 0' * v_forward_y * trace_plane_normal_z
 414                                 +
 415                                 '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y),
 416                                 trace_plane_normal
 417                                 );
 418         }
 419         else
 420         {
 421                 vector vel_local;
 422
 423                 vel_local_x = v_forward * self.velocity;
 424                 vel_local_y = v_right * self.velocity;
 425                 vel_local_z = v_up * self.velocity;
 426
 427                 self.angles_x = racecar_angle(vel_local_x, vel_local_z);
 428                 self.angles_z = racecar_angle(-vel_local_y, vel_local_z);
 429         }
 430
 431         // smooth the angles
 432         vector vf1, vu1, smoothangles;
 433         makevectors(self.angles);
 434         f = bound(0, frametime * g_bugrigs_angle_smoothing, 1);
 435         if(f == 0)
 436                 f = 1;
 437         vf1 = v_forward * f;
 438         vu1 = v_up * f;
 439         makevectors(angles_save);
 440         vf1 = vf1 + v_forward * (1 - f);
 441         vu1 = vu1 + v_up * (1 - f);
 442         smoothangles = vectoangles2(vf1, vu1);
 443         self.angles_x = -smoothangles_x;
 444         self.angles_z =  smoothangles_z;
 445 }
 446
 447 float IsMoveInDirection(vector mv, float angle) // key mix factor
 448 {
 449         if(mv_x == 0 && mv_y == 0)
 450                 return 0; // avoid division by zero
 451         angle -= RAD2DEG * atan2(mv_y, mv_x);
 452         angle = remainder(angle, 360) / 45;
 453         if(angle >  1)
 454                 return 0;
 455         if(angle < -1)
 456                 return 0;
 457         return 1 - fabs(angle);
 458 }
 459
 460 float GeomLerp(float a, float lerp, float b)
 461 {
 462         if(a == 0)
 463         {
 464                 if(lerp < 1)
 465                         return 0;
 466                 else
 467                         return b;
 468         }
 469         if(b == 0)
 470         {
 471                 if(lerp > 0)
 472                         return 0;
 473                 else
 474                         return a;
 475         }
 476         return a * pow(fabs(b / a), lerp);
 477 }
 478
 479 void CPM_PM_Aircontrol(vector wishdir, float wishspeed)
 480 {
 481         float zspeed, xyspeed, dot, k;
 482
 483 #if 0
 484         // this doesn't play well with analog input
 485         if(self.movement_x == 0 || self.movement_y != 0)
 486                 return; // can't control movement if not moving forward or backward
 487         k = 32;
 488 #else
 489         k = 32 * (2 * IsMoveInDirection(self.movement, 0) - 1);
 490         if(k <= 0)
 491                 return;
 492 #endif
 493
 494         k *= bound(0, wishspeed / self.stat_sv_maxairspeed, 1);
 495
 496         zspeed = self.velocity_z;
 497         self.velocity_z = 0;
 498         xyspeed = vlen(self.velocity); self.velocity = normalize(self.velocity);
 499
 500         dot = self.velocity * wishdir;
 501
 502         if(dot > 0) // we can't change direction while slowing down
 503         {
 504                 k *= pow(dot, self.stat_sv_aircontrol_power)*frametime;
 505                 xyspeed = max(0, xyspeed - self.stat_sv_aircontrol_penalty * sqrt(max(0, 1 - dot*dot)) * k/32);
 506                 k *= self.stat_sv_aircontrol;
 507                 self.velocity = normalize(self.velocity * xyspeed + wishdir * k);
 508         }
 509
 510         self.velocity = self.velocity * xyspeed;
 511         self.velocity_z = zspeed;
 512 }
 513
 514 float AdjustAirAccelQW(float accelqw, float factor)
 515 {
 516         return copysign(bound(0.000001, 1 - (1 - fabs(accelqw)) * factor, 1), accelqw);
 517 }
 518
 519 // example config for alternate speed clamping:
 520 //   sv_airaccel_qw 0.8
 521 //   sv_airaccel_sideways_friction 0
 522 //   prvm_globalset server speedclamp_mode 1
 523 //     (or 2)
 524 void PM_Accelerate(vector wishdir, float wishspeed, float wishspeed0, float accel, float accelqw, float stretchfactor, float sidefric, float speedlimit)
 525 {
 526         float vel_straight;
 527         float vel_z;
 528         vector vel_perpend;
 529         float step;
 530
 531         vector vel_xy;
 532         float vel_xy_current;
 533         float vel_xy_backward, vel_xy_forward;
 534         float speedclamp;
 535
 536         if(stretchfactor > 0)
 537                 speedclamp = stretchfactor;
 538         else if(accelqw < 0)
 539                 speedclamp = 1; // full clamping, no stretch
 540         else
 541                 speedclamp = -1; // no clamping
 542
 543         if(accelqw < 0)
 544                 accelqw = -accelqw;
 545
 546         if(autocvar_sv_gameplayfix_q2airaccelerate)
 547                 wishspeed0 = wishspeed;
 548
 549         vel_straight = self.velocity * wishdir;
 550         vel_z = self.velocity_z;
 551         vel_xy = vec2(self.velocity);
 552         vel_perpend = vel_xy - vel_straight * wishdir;
 553
 554         step = accel * frametime * wishspeed0;
 555
 556         vel_xy_current  = vlen(vel_xy);
 557         if(speedlimit)
 558                 accelqw = AdjustAirAccelQW(accelqw, (speedlimit - bound(wishspeed, vel_xy_current, speedlimit)) / max(1, speedlimit - wishspeed));
 559         vel_xy_forward  = vel_xy_current + bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
 560         vel_xy_backward = vel_xy_current - bound(0, wishspeed + vel_xy_current, step) * accelqw - step * (1 - accelqw);
 561         if(vel_xy_backward < 0)
 562                 vel_xy_backward = 0; // not that it REALLY occurs that this would cause wrong behaviour afterwards
 563
 564         vel_straight = vel_straight + bound(0, wishspeed - vel_straight, step) * accelqw + step * (1 - accelqw);
 565
 566         if(sidefric < 0 && (vel_perpend*vel_perpend))
 567                 // negative: only apply so much sideways friction to stay below the speed you could get by "braking"
 568         {
 569                 float f, fminimum;
 570                 f = max(0, 1 + frametime * wishspeed * sidefric);
 571                 fminimum = (vel_xy_backward*vel_xy_backward - vel_straight*vel_straight) / (vel_perpend*vel_perpend);
 572                 // this cannot be > 1
 573                 if(fminimum <= 0)
 574                         vel_perpend = vel_perpend * max(0, f);
 575                 else
 576                 {
 577                         fminimum = sqrt(fminimum);
 578                         vel_perpend = vel_perpend * max(fminimum, f);
 579                 }
 580         }
 581         else
 582                 vel_perpend = vel_perpend * max(0, 1 - frametime * wishspeed * sidefric);
 583
 584         vel_xy = vel_straight * wishdir + vel_perpend;
 585
 586         if(speedclamp >= 0)
 587         {
 588                 float vel_xy_preclamp;
 589                 vel_xy_preclamp = vlen(vel_xy);
 590                 if(vel_xy_preclamp > 0) // prevent division by zero
 591                 {
 592                         vel_xy_current += (vel_xy_forward - vel_xy_current) * speedclamp;
 593                         if(vel_xy_current < vel_xy_preclamp)
 594                                 vel_xy = vel_xy * (vel_xy_current / vel_xy_preclamp);
 595                 }
 596         }
 597
 598         self.velocity = vel_xy + vel_z * '0 0 1';
 599 }
 600
 601 void PM_AirAccelerate(vector wishdir, float wishspeed)
 602 {
 603         vector curvel, wishvel, acceldir, curdir;
 604         float addspeed, accelspeed, curspeed, f;
 605         float dot;
 606
 607         if(wishspeed == 0)
 608                 return;
 609
 610         curvel = self.velocity;
 611         curvel_z = 0;
 612         curspeed = vlen(curvel);
 613
 614         if(wishspeed > curspeed * 1.01)
 615         {
 616                 wishspeed = min(wishspeed, curspeed + self.stat_sv_warsowbunny_airforwardaccel * self.stat_sv_maxspeed * frametime);
 617         }
 618         else
 619         {
 620                 f = max(0, (self.stat_sv_warsowbunny_topspeed - curspeed) / (self.stat_sv_warsowbunny_topspeed - self.stat_sv_maxspeed));
 621                 wishspeed = max(curspeed, self.stat_sv_maxspeed) + self.stat_sv_warsowbunny_accel * f * self.stat_sv_maxspeed * frametime;
 622         }
 623         wishvel = wishdir * wishspeed;
 624         acceldir = wishvel - curvel;
 625         addspeed = vlen(acceldir);
 626         acceldir = normalize(acceldir);
 627
 628         accelspeed = min(addspeed, self.stat_sv_warsowbunny_turnaccel * self.stat_sv_maxspeed * frametime);
 629
 630         if(self.stat_sv_warsowbunny_backtosideratio < 1)
 631         {
 632                 curdir = normalize(curvel);
 633                 dot = acceldir * curdir;
 634                 if(dot < 0)
 635                         acceldir = acceldir - (1 - self.stat_sv_warsowbunny_backtosideratio) * dot * curdir;
 636         }
 637
 638         self.velocity += accelspeed * acceldir;
 639 }
 640
 641 .vector movement_old;
 642 .float buttons_old;
 643 .vector v_angle_old;
 644 .string lastclassname;
 645
 646 .float() PlayerPhysplug;
 647
 648 string specialcommand = "xwxwxsxsxaxdxaxdx1x ";
 649 .float specialcommand_pos;
 650 void SpecialCommand()
 651 {
 652 #ifdef TETRIS
 653         TetrisImpulse();
 654 #else
 655         if(!CheatImpulse(99))
 656                 print("A hollow voice says \"Plugh\".\n");
 657 #endif
 658 }
 659
 660 float speedaward_speed;
 661 string speedaward_holder;
 662 string speedaward_uid;
 663 void race_send_speedaward(float msg)
 664 {
 665         // send the best speed of the round
 666         WriteByte(msg, SVC_TEMPENTITY);
 667         WriteByte(msg, TE_CSQC_RACE);
 668         WriteByte(msg, RACE_NET_SPEED_AWARD);
 669         WriteInt24_t(msg, floor(speedaward_speed+0.5));
 670         WriteString(msg, speedaward_holder);
 671 }
 672
 673 float speedaward_alltimebest;
 674 string speedaward_alltimebest_holder;
 675 string speedaward_alltimebest_uid;
 676 void race_send_speedaward_alltimebest(float msg)
 677 {
 678         // send the best speed
 679         WriteByte(msg, SVC_TEMPENTITY);
 680         WriteByte(msg, TE_CSQC_RACE);
 681         WriteByte(msg, RACE_NET_SPEED_AWARD_BEST);
 682         WriteInt24_t(msg, floor(speedaward_alltimebest+0.5));
 683         WriteString(msg, speedaward_alltimebest_holder);
 684 }
 685
 686 string GetMapname(void);
 687 float speedaward_lastupdate;
 688 float speedaward_lastsent;
 689 void SV_PlayerPhysics()
 690 {
 691         vector wishvel, wishdir, v;
 692         float wishspeed, f, maxspd_mod, spd, maxairspd, airaccel, swampspd_mod, buttons;
 693         string temps;
 694         float buttons_prev;
 695         float not_allowed_to_move;
 696         string c;
 697
 698         WarpZone_PlayerPhysics_FixVAngle();
 699
 700         maxspd_mod = 1;
 701         if(self.ballcarried)
 702                 if(g_keepaway)
 703                         maxspd_mod *= autocvar_g_keepaway_ballcarrier_highspeed;
 704
 705         maxspd_mod *= autocvar_g_movement_highspeed;
 706
 707         // fix physics stats for g_movement_highspeed
 708         // TODO maybe rather use maxairspeed? needs testing
 709         self.stat_sv_airaccel_qw = AdjustAirAccelQW(Physics_ClientOption(self, "airaccel_qw"), maxspd_mod);
 710         if(Physics_ClientOption(self, "airstrafeaccel_qw"))
 711                 self.stat_sv_airstrafeaccel_qw = AdjustAirAccelQW(Physics_ClientOption(self, "airstrafeaccel_qw"), maxspd_mod);
 712         else
 713                 self.stat_sv_airstrafeaccel_qw = 0;
 714         self.stat_sv_airspeedlimit_nonqw = Physics_ClientOption(self, "airspeedlimit_nonqw") * maxspd_mod;
 715         self.stat_sv_maxspeed = Physics_ClientOption(self, "maxspeed") * maxspd_mod; // also slow walking
 716
 717         // fix some new settings
 718         self.stat_sv_airaccel_qw_stretchfactor = Physics_ClientOption(self, "airaccel_qw_stretchfactor");
 719         self.stat_sv_maxairstrafespeed = Physics_ClientOption(self, "maxairstrafespeed");
 720         self.stat_sv_maxairspeed = Physics_ClientOption(self, "maxairspeed");
 721         self.stat_sv_airstrafeaccelerate = Physics_ClientOption(self, "airstrafeaccelerate");
 722         self.stat_sv_warsowbunny_turnaccel = Physics_ClientOption(self, "warsowbunny_turnaccel");
 723         self.stat_sv_airaccel_sideways_friction = Physics_ClientOption(self, "airaccel_sideways_friction");
 724         self.stat_sv_aircontrol = Physics_ClientOption(self, "aircontrol");
 725         self.stat_sv_aircontrol_power = Physics_ClientOption(self, "aircontrol_power");
 726         self.stat_sv_aircontrol_penalty = Physics_ClientOption(self, "aircontrol_penalty");
 727         self.stat_sv_warsowbunny_airforwardaccel = Physics_ClientOption(self, "warsowbunny_airforwardaccel");
 728         self.stat_sv_warsowbunny_topspeed = Physics_ClientOption(self, "warsowbunny_topspeed");
 729         self.stat_sv_warsowbunny_accel = Physics_ClientOption(self, "warsowbunny_accel");
 730         self.stat_sv_warsowbunny_backtosideratio = Physics_ClientOption(self, "warsowbunny_backtosideratio");
 731         self.stat_sv_friction = Physics_ClientOption(self, "friction");
 732         self.stat_sv_accelerate = Physics_ClientOption(self, "accelerate");
 733         self.stat_sv_stopspeed = Physics_ClientOption(self, "stopspeed");
 734         self.stat_sv_airaccelerate = Physics_ClientOption(self, "airaccelerate");
 735         self.stat_sv_airstopaccelerate = Physics_ClientOption(self, "airstopaccelerate");
 736         self.stat_sv_jumpvelocity = Physics_ClientOption(self, "jumpvelocity");
 737
 738     if(self.PlayerPhysplug)
 739         if(self.PlayerPhysplug())
 740             return;
 741
 742         self.race_movetime_frac += frametime;
 743         f = floor(self.race_movetime_frac);
 744         self.race_movetime_frac -= f;
 745         self.race_movetime_count += f;
 746         self.race_movetime = self.race_movetime_frac + self.race_movetime_count;
 747
 748         anticheat_physics();
 749
 750         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);
 751
 752         if(!buttons)
 753                 c = "x";
 754         else if(buttons == 1)
 755                 c = "1";
 756         else if(buttons == 2)
 757                 c = " ";
 758         else if(buttons == 128)
 759                 c = "s";
 760         else if(buttons == 256)
 761                 c = "w";
 762         else if(buttons == 512)
 763                 c = "a";
 764         else if(buttons == 1024)
 765                 c = "d";
 766         else
 767                 c = "?";
 768
 769         if(c == substring(specialcommand, self.specialcommand_pos, 1))
 770         {
 771                 self.specialcommand_pos += 1;
 772                 if(self.specialcommand_pos >= strlen(specialcommand))
 773                 {
 774                         self.specialcommand_pos = 0;
 775                         SpecialCommand();
 776                         return;
 777                 }
 778         }
 779         else if(self.specialcommand_pos && (c != substring(specialcommand, self.specialcommand_pos - 1, 1)))
 780                 self.specialcommand_pos = 0;
 781
 782         if(sv_maxidle > 0)
 783         {
 784                 if(buttons != self.buttons_old || self.movement != self.movement_old || self.v_angle != self.v_angle_old)
 785                         self.parm_idlesince = time;
 786         }
 787         buttons_prev = self.buttons_old;
 788         self.buttons_old = buttons;
 789         self.movement_old = self.movement;
 790         self.v_angle_old = self.v_angle;
 791
 792         if(time < self.nickspamtime)
 793         if(self.nickspamcount >= autocvar_g_nick_flood_penalty_yellow)
 794         {
 795                 // slight annoyance for nick change scripts
 796                 self.movement = -1 * self.movement;
 797                 self.BUTTON_ATCK = self.BUTTON_JUMP = self.BUTTON_ATCK2 = self.BUTTON_ZOOM = self.BUTTON_CROUCH = self.BUTTON_HOOK = self.BUTTON_USE = 0;
 798
 799                 if(self.nickspamcount >= autocvar_g_nick_flood_penalty_red) // if you are persistent and the slight annoyance above does not stop you, I'll show you!
 800                 {
 801                         self.angles_x = random() * 360;
 802                         self.angles_y = random() * 360;
 803                         // at least I'm not forcing retardedview by also assigning to angles_z
 804                         self.fixangle = TRUE;
 805                 }
 806         }
 807
 808         if (self.punchangle != '0 0 0')
 809         {
 810                 f = vlen(self.punchangle) - 10 * frametime;
 811                 if (f > 0)
 812                         self.punchangle = normalize(self.punchangle) * f;
 813                 else
 814                         self.punchangle = '0 0 0';
 815         }
 816
 817         if (self.punchvector != '0 0 0')
 818         {
 819                 f = vlen(self.punchvector) - 30 * frametime;
 820                 if (f > 0)
 821                         self.punchvector = normalize(self.punchvector) * f;
 822                 else
 823                         self.punchvector = '0 0 0';
 824         }
 825
 826         if (IS_BOT_CLIENT(self))
 827         {
 828                 if(playerdemo_read())
 829                         return;
 830                 bot_think();
 831         }
 832
 833         if(IS_PLAYER(self))
 834         {
 835                 if(self.race_penalty)
 836                         if(time > self.race_penalty)
 837                                 self.race_penalty = 0;
 838
 839                 not_allowed_to_move = 0;
 840                 if(self.race_penalty)
 841                         not_allowed_to_move = 1;
 842                 if(!autocvar_sv_ready_restart_after_countdown)
 843                 if(time < game_starttime)
 844                         not_allowed_to_move = 1;
 845
 846                 if(not_allowed_to_move)
 847                 {
 848                         self.velocity = '0 0 0';
 849                         self.movetype = MOVETYPE_NONE;
 850                         self.disableclientprediction = 2;
 851                 }
 852                 else if(self.disableclientprediction == 2)
 853                 {
 854                         if(self.movetype == MOVETYPE_NONE)
 855                                 self.movetype = MOVETYPE_WALK;
 856                         self.disableclientprediction = 0;
 857                 }
 858         }
 859
 860         if (self.movetype == MOVETYPE_NONE)
 861                 return;
 862
 863         // when we get here, disableclientprediction cannot be 2
 864         self.disableclientprediction = 0;
 865         if(time < self.ladder_time)
 866                 self.disableclientprediction = 1;
 867
 868         if(time < self.spider_slowness)
 869         {
 870                 self.stat_sv_maxspeed *= 0.5; // half speed while slow from spider
 871                 self.stat_sv_airspeedlimit_nonqw *= 0.5;
 872         }
 873
 874         if(self.frozen)
 875         {
 876                 if(autocvar_sv_dodging_frozen && IS_REAL_CLIENT(self))
 877                 {
 878                         self.movement_x = bound(-5, self.movement_x, 5);
 879                         self.movement_y = bound(-5, self.movement_y, 5);
 880                         self.movement_z = bound(-5, self.movement_z, 5);
 881                 }
 882                 else
 883                         self.movement = '0 0 0';
 884                 self.disableclientprediction = 1;
 885
 886                 vector midpoint = ((self.absmin + self.absmax) * 0.5);
 887                 if(pointcontents(midpoint) == CONTENT_WATER)
 888                 {
 889                         self.velocity = self.velocity * 0.5;
 890
 891                         if(pointcontents(midpoint + '0 0 16') == CONTENT_WATER)
 892                                 { self.velocity_z = 200; }
 893                 }
 894         }
 895
 896         MUTATOR_CALLHOOK(PlayerPhysics);
 897
 898         if(self.player_blocked)
 899         {
 900                 self.movement = '0 0 0';
 901                 self.disableclientprediction = 1;
 902         }
 903
 904         maxspd_mod = 1;
 905
 906         swampspd_mod = 1;
 907         if(self.in_swamp) {
 908                 swampspd_mod = self.swamp_slowdown; //cvar("g_balance_swamp_moverate");
 909         }
 910
 911         // conveyors: first fix velocity
 912         if(self.conveyor.state)
 913                 self.velocity -= self.conveyor.movedir;
 914
 915         if (!IS_PLAYER(self))
 916         {
 917                 maxspd_mod = autocvar_sv_spectator_speed_multiplier;
 918                 if(!self.spectatorspeed)
 919                         self.spectatorspeed = maxspd_mod;
 920                 if(self.impulse && self.impulse <= 19 || (self.impulse >= 200 && self.impulse <= 209) || (self.impulse >= 220 && self.impulse <= 229))
 921                 {
 922                         if(self.lastclassname != "player")
 923                         {
 924                                 if(self.impulse == 10 || self.impulse == 15 || self.impulse == 18 || (self.impulse >= 200 && self.impulse <= 209))
 925                                         self.spectatorspeed = bound(1, self.spectatorspeed + 0.5, 5);
 926                                 else if(self.impulse == 11)
 927                                         self.spectatorspeed = maxspd_mod;
 928                                 else if(self.impulse == 12 || self.impulse == 16  || self.impulse == 19 || (self.impulse >= 220 && self.impulse <= 229))
 929                                         self.spectatorspeed = bound(1, self.spectatorspeed - 0.5, 5);
 930                                 else if(self.impulse >= 1 && self.impulse <= 9)
 931                                         self.spectatorspeed = 1 + 0.5 * (self.impulse - 1);
 932                         } // otherwise just clear
 933                         self.impulse = 0;
 934                 }
 935                 maxspd_mod = self.spectatorspeed;
 936         }
 937
 938         spd = max(self.stat_sv_maxspeed, self.stat_sv_maxairspeed) * maxspd_mod * swampspd_mod;
 939         if(self.speed != spd)
 940         {
 941                 self.speed = spd;
 942                 temps = ftos(spd);
 943                 stuffcmd(self, strcat("cl_forwardspeed ", temps, "\n"));
 944                 stuffcmd(self, strcat("cl_backspeed ", temps, "\n"));
 945                 stuffcmd(self, strcat("cl_sidespeed ", temps, "\n"));
 946                 stuffcmd(self, strcat("cl_upspeed ", temps, "\n"));
 947         }
 948
 949         maxspd_mod *= swampspd_mod; // only one common speed modder please!
 950         swampspd_mod = 1;
 951
 952         // if dead, behave differently
 953         if (self.deadflag)
 954                 goto end;
 955
 956         if (!self.fixangle && !g_bugrigs)
 957         {
 958                 self.angles_x = 0;
 959                 self.angles_y = self.v_angle_y;
 960                 self.angles_z = 0;
 961         }
 962
 963         if(self.flags & FL_ONGROUND)
 964         if(IS_PLAYER(self)) // no fall sounds for observers thank you very much
 965         if(self.wasFlying)
 966         {
 967                 self.wasFlying = 0;
 968
 969                 if(self.waterlevel < WATERLEVEL_SWIMMING)
 970                 if(time >= self.ladder_time)
 971                 if (!self.hook)
 972                 {
 973                         self.nextstep = time + 0.3 + random() * 0.1;
 974                         trace_dphitq3surfaceflags = 0;
 975                         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 1', MOVE_NOMONSTERS, self);
 976                         if (!(trace_dphitq3surfaceflags & Q3SURFACEFLAG_NOSTEPS))
 977                         {
 978                                 if(trace_dphitq3surfaceflags & Q3SURFACEFLAG_METALSTEPS)
 979                                         GlobalSound(globalsound_metalfall, CH_PLAYER, VOICETYPE_PLAYERSOUND);
 980                                 else
 981                                         GlobalSound(globalsound_fall, CH_PLAYER, VOICETYPE_PLAYERSOUND);
 982                         }
 983                 }
 984         }
 985
 986         if(IsFlying(self))
 987                 self.wasFlying = 1;
 988
 989         if(IS_PLAYER(self))
 990                 CheckPlayerJump();
 991
 992         if (self.flags & FL_WATERJUMP )
 993         {
 994                 self.velocity_x = self.movedir_x;
 995                 self.velocity_y = self.movedir_y;
 996                 if (time > self.teleport_time || self.waterlevel == WATERLEVEL_NONE)
 997                 {
 998                         self.flags &= ~FL_WATERJUMP;
 999                         self.teleport_time = 0;
1000                 }
1001         }
1002         else if (g_bugrigs && IS_PLAYER(self))
1003         {
1004                 RaceCarPhysics();
1005         }
1006         else if (self.movetype == MOVETYPE_NOCLIP || self.movetype == MOVETYPE_FLY || self.movetype == MOVETYPE_FLY_WORLDONLY)
1007         {
1008                 // noclipping or flying
1009                 self.flags &= ~FL_ONGROUND;
1010
1011                 self.velocity = self.velocity * (1 - frametime * self.stat_sv_friction);
1012                 makevectors(self.v_angle);
1013                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
1014                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
1015                 // acceleration
1016                 wishdir = normalize(wishvel);
1017                 wishspeed = vlen(wishvel);
1018                 if (wishspeed > self.stat_sv_maxspeed*maxspd_mod)
1019                         wishspeed = self.stat_sv_maxspeed*maxspd_mod;
1020                 if (time >= self.teleport_time)
1021                         PM_Accelerate(wishdir, wishspeed, wishspeed, self.stat_sv_accelerate*maxspd_mod, 1, 0, 0, 0);
1022         }
1023         else if (self.waterlevel >= WATERLEVEL_SWIMMING)
1024         {
1025                 // swimming
1026                 self.flags &= ~FL_ONGROUND;
1027
1028                 makevectors(self.v_angle);
1029                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
1030                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
1031                 if (wishvel == '0 0 0')
1032                         wishvel = '0 0 -60'; // drift towards bottom
1033
1034                 wishdir = normalize(wishvel);
1035                 wishspeed = vlen(wishvel);
1036                 if (wishspeed > self.stat_sv_maxspeed*maxspd_mod)
1037                         wishspeed = self.stat_sv_maxspeed*maxspd_mod;
1038                 wishspeed = wishspeed * 0.7;
1039
1040                 // water friction
1041                 self.velocity = self.velocity * (1 - frametime * self.stat_sv_friction);
1042
1043                 // water acceleration
1044                 PM_Accelerate(wishdir, wishspeed, wishspeed, self.stat_sv_accelerate*maxspd_mod, 1, 0, 0, 0);
1045         }
1046         else if (time < self.ladder_time)
1047         {
1048                 // on a spawnfunc_func_ladder or swimming in spawnfunc_func_water
1049                 self.flags &= ~FL_ONGROUND;
1050
1051                 float g;
1052                 g = autocvar_sv_gravity * frametime;
1053                 if(self.gravity)
1054                         g *= self.gravity;
1055                 if(autocvar_sv_gameplayfix_gravityunaffectedbyticrate)
1056                 {
1057                         g *= 0.5;
1058                         self.velocity_z += g;
1059                 }
1060
1061                 self.velocity = self.velocity * (1 - frametime * self.stat_sv_friction);
1062                 makevectors(self.v_angle);
1063                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
1064                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
1065                 self.velocity_z += g;
1066                 if (self.ladder_entity.classname == "func_water")
1067                 {
1068                         f = vlen(wishvel);
1069                         if (f > self.ladder_entity.speed)
1070                                 wishvel = wishvel * (self.ladder_entity.speed / f);
1071
1072                         self.watertype = self.ladder_entity.skin;
1073                         f = self.ladder_entity.origin_z + self.ladder_entity.maxs_z;
1074                         if ((self.origin_z + self.view_ofs_z) < f)
1075                                 self.waterlevel = WATERLEVEL_SUBMERGED;
1076                         else if ((self.origin_z + (self.mins_z + self.maxs_z) * 0.5) < f)
1077                                 self.waterlevel = WATERLEVEL_SWIMMING;
1078                         else if ((self.origin_z + self.mins_z + 1) < f)
1079                                 self.waterlevel = WATERLEVEL_WETFEET;
1080                         else
1081                         {
1082                                 self.waterlevel = WATERLEVEL_NONE;
1083                                 self.watertype = CONTENT_EMPTY;
1084                         }
1085                 }
1086                 // acceleration
1087                 wishdir = normalize(wishvel);
1088                 wishspeed = vlen(wishvel);
1089                 if (wishspeed > self.stat_sv_maxspeed*maxspd_mod)
1090                         wishspeed = self.stat_sv_maxspeed*maxspd_mod;
1091                 if (time >= self.teleport_time)
1092                 {
1093                         // water acceleration
1094                         PM_Accelerate(wishdir, wishspeed, wishspeed, self.stat_sv_accelerate*maxspd_mod, 1, 0, 0, 0);
1095                 }
1096         }
1097         else if (self.items & IT_USING_JETPACK)
1098         {
1099                 //makevectors(self.v_angle_y * '0 1 0');
1100                 makevectors(self.v_angle);
1101                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1102                 // add remaining speed as Z component
1103                 maxairspd = self.stat_sv_maxairspeed*max(1, maxspd_mod);
1104                 // fix speedhacks :P
1105                 wishvel = normalize(wishvel) * min(vlen(wishvel) / maxairspd, 1);
1106                 // add the unused velocity as up component
1107                 wishvel_z = 0;
1108
1109                 // if(self.BUTTON_JUMP)
1110                         wishvel_z = sqrt(max(0, 1 - wishvel * wishvel));
1111
1112                 // it is now normalized, so...
1113                 float a_side, a_up, a_add, a_diff;
1114                 a_side = autocvar_g_jetpack_acceleration_side;
1115                 a_up = autocvar_g_jetpack_acceleration_up;
1116                 a_add = autocvar_g_jetpack_antigravity * autocvar_sv_gravity;
1117
1118                 wishvel_x *= a_side;
1119                 wishvel_y *= a_side;
1120                 wishvel_z *= a_up;
1121                 wishvel_z += a_add;
1122
1123                 float best;
1124                 best = 0;
1125                 //////////////////////////////////////////////////////////////////////////////////////
1126                 // finding the maximum over all vectors of above form
1127                 // with wishvel having an absolute value of 1
1128                 //////////////////////////////////////////////////////////////////////////////////////
1129                 // we're finding the maximum over
1130                 //   f(a_side, a_up, a_add, z) := a_side * (1 - z^2) + (a_add + a_up * z)^2;
1131                 // for z in the range from -1 to 1
1132                 //////////////////////////////////////////////////////////////////////////////////////
1133                 // maximum is EITHER attained at the single extreme point:
1134                 a_diff = a_side * a_side - a_up * a_up;
1135                 if(a_diff != 0)
1136                 {
1137                         f = a_add * a_up / a_diff; // this is the zero of diff(f(a_side, a_up, a_add, z), z)
1138                         if(f > -1 && f < 1) // can it be attained?
1139                         {
1140                                 best = (a_diff + a_add * a_add) * (a_diff + a_up * a_up) / a_diff;
1141                                 //print("middle\n");
1142                         }
1143                 }
1144                 // OR attained at z = 1:
1145                 f = (a_up + a_add) * (a_up + a_add);
1146                 if(f > best)
1147                 {
1148                         best = f;
1149                         //print("top\n");
1150                 }
1151                 // OR attained at z = -1:
1152                 f = (a_up - a_add) * (a_up - a_add);
1153                 if(f > best)
1154                 {
1155                         best = f;
1156                         //print("bottom\n");
1157                 }
1158                 best = sqrt(best);
1159                 //////////////////////////////////////////////////////////////////////////////////////
1160
1161                 //print("best possible acceleration: ", ftos(best), "\n");
1162
1163                 float fxy, fz;
1164                 fxy = bound(0, 1 - (self.velocity * normalize(wishvel_x * '1 0 0' + wishvel_y * '0 1 0')) / autocvar_g_jetpack_maxspeed_side, 1);
1165                 if(wishvel_z - autocvar_sv_gravity > 0)
1166                         fz = bound(0, 1 - self.velocity_z / autocvar_g_jetpack_maxspeed_up, 1);
1167                 else
1168                         fz = bound(0, 1 + self.velocity_z / autocvar_g_jetpack_maxspeed_up, 1);
1169
1170                 wishvel_x *= fxy;
1171                 wishvel_y *= fxy;
1172                 wishvel_z = (wishvel_z - autocvar_sv_gravity) * fz + autocvar_sv_gravity;
1173
1174                 float fvel;
1175                 fvel = min(1, vlen(wishvel) / best);
1176                 if(autocvar_g_jetpack_fuel && !(self.items & IT_UNLIMITED_WEAPON_AMMO))
1177                         f = min(1, self.ammo_fuel / (autocvar_g_jetpack_fuel * frametime * fvel));
1178                 else
1179                         f = 1;
1180
1181                 //print("this acceleration: ", ftos(vlen(wishvel) * f), "\n");
1182
1183                 if (f > 0 && wishvel != '0 0 0')
1184                 {
1185                         self.velocity = self.velocity + wishvel * f * frametime;
1186                         if (!(self.items & IT_UNLIMITED_WEAPON_AMMO))
1187                                 self.ammo_fuel -= autocvar_g_jetpack_fuel * frametime * fvel * f;
1188                         self.flags &= ~FL_ONGROUND;
1189                         self.items |= IT_USING_JETPACK;
1190
1191                         // jetpack also inhibits health regeneration, but only for 1 second
1192                         self.pauseregen_finished = max(self.pauseregen_finished, time + autocvar_g_balance_pause_fuel_regen);
1193                 }
1194         }
1195         else if (self.flags & FL_ONGROUND)
1196         {
1197                 // we get here if we ran out of ammo
1198                 if((self.items & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32) && self.ammo_fuel < 0.01)
1199                         Send_Notification(NOTIF_ONE, self, MSG_INFO, INFO_JETPACK_NOFUEL);
1200
1201                 // walking
1202                 makevectors(self.v_angle_y * '0 1 0');
1203                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1204
1205                 if(!(self.lastflags & FL_ONGROUND))
1206                 {
1207                         if(autocvar_speedmeter)
1208                                 dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
1209                         if(self.lastground < time - 0.3)
1210                                 self.velocity = self.velocity * (1 - autocvar_sv_friction_on_land);
1211                         if(self.jumppadcount > 1)
1212                                 dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
1213                         self.jumppadcount = 0;
1214                 }
1215
1216                 v = self.velocity;
1217                 v_z = 0;
1218                 f = vlen(v);
1219                 if(f > 0)
1220                 {
1221                         if (f < self.stat_sv_stopspeed)
1222                                 f = 1 - frametime * (self.stat_sv_stopspeed / f) * self.stat_sv_friction;
1223                         else
1224                                 f = 1 - frametime * self.stat_sv_friction;
1225                         if (f > 0)
1226                                 self.velocity = self.velocity * f;
1227                         else
1228                                 self.velocity = '0 0 0';
1229                         /*
1230                            Mathematical analysis time!
1231
1232                            Our goal is to invert this mess.
1233
1234                            For the two cases we get:
1235                                 v = v0 * (1 - frametime * (autocvar_sv_stopspeed / v0) * autocvar_sv_friction)
1236                                   = v0 - frametime * autocvar_sv_stopspeed * autocvar_sv_friction
1237                                 v0 = v + frametime * autocvar_sv_stopspeed * autocvar_sv_friction
1238                            and
1239                                 v = v0 * (1 - frametime * autocvar_sv_friction)
1240                                 v0 = v / (1 - frametime * autocvar_sv_friction)
1241
1242                            These cases would be chosen ONLY if:
1243                                 v0 < autocvar_sv_stopspeed
1244                                 v + frametime * autocvar_sv_stopspeed * autocvar_sv_friction < autocvar_sv_stopspeed
1245                                 v < autocvar_sv_stopspeed * (1 - frametime * autocvar_sv_friction)
1246                            and, respectively:
1247                                 v0 >= autocvar_sv_stopspeed
1248                                 v / (1 - frametime * autocvar_sv_friction) >= autocvar_sv_stopspeed
1249                                 v >= autocvar_sv_stopspeed * (1 - frametime * autocvar_sv_friction)
1250                          */
1251                 }
1252
1253                 // acceleration
1254                 wishdir = normalize(wishvel);
1255                 wishspeed = vlen(wishvel);
1256                 if (wishspeed > self.stat_sv_maxspeed*maxspd_mod)
1257                         wishspeed = self.stat_sv_maxspeed*maxspd_mod;
1258                 if (self.crouch)
1259                         wishspeed = wishspeed * 0.5;
1260                 if (time >= self.teleport_time)
1261                         PM_Accelerate(wishdir, wishspeed, wishspeed, self.stat_sv_accelerate*maxspd_mod, 1, 0, 0, 0);
1262         }
1263         else
1264         {
1265                 float wishspeed0;
1266                 // we get here if we ran out of ammo
1267                 if((self.items & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32) && self.ammo_fuel < 0.01)
1268                         Send_Notification(NOTIF_ONE, self, MSG_INFO, INFO_JETPACK_NOFUEL);
1269
1270                 if(maxspd_mod < 1)
1271                 {
1272                         maxairspd = self.stat_sv_maxairspeed*maxspd_mod;
1273                         airaccel = self.stat_sv_airaccelerate*maxspd_mod;
1274                 }
1275                 else
1276                 {
1277                         maxairspd = self.stat_sv_maxairspeed;
1278                         airaccel = self.stat_sv_airaccelerate;
1279                 }
1280                 // airborn
1281                 makevectors(self.v_angle_y * '0 1 0');
1282                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1283                 // acceleration
1284                 wishdir = normalize(wishvel);
1285                 wishspeed = wishspeed0 = vlen(wishvel);
1286                 if (wishspeed0 > self.stat_sv_maxspeed*maxspd_mod)
1287                         wishspeed0 = self.stat_sv_maxspeed*maxspd_mod;
1288                 if (wishspeed > maxairspd)
1289                         wishspeed = maxairspd;
1290                 if (self.crouch)
1291                         wishspeed = wishspeed * 0.5;
1292                 if (time >= self.teleport_time)
1293                 {
1294                         float accelerating;
1295                         float wishspeed2;
1296                         float airaccelqw;
1297                         float strafity;
1298
1299                         airaccelqw = self.stat_sv_airaccel_qw;
1300                         accelerating = (self.velocity * wishdir > 0);
1301                         wishspeed2 = wishspeed;
1302
1303                         // CPM
1304                         if(self.stat_sv_airstopaccelerate)
1305                         {
1306                                 vector curdir;
1307                                 curdir = self.velocity;
1308                                 curdir_z = 0;
1309                                 curdir = normalize(curdir);
1310                                 airaccel = airaccel + (self.stat_sv_airstopaccelerate*maxspd_mod - airaccel) * max(0, -(curdir * wishdir));
1311                         }
1312                         // note that for straight forward jumping:
1313                         // step = accel * frametime * wishspeed0;
1314                         // accel  = bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
1315                         // -->
1316                         // dv/dt = accel * maxspeed (when slow)
1317                         // dv/dt = accel * maxspeed * (1 - accelqw) (when fast)
1318                         // log dv/dt = logaccel + logmaxspeed (when slow)
1319                         // log dv/dt = logaccel + logmaxspeed + log(1 - accelqw) (when fast)
1320                         strafity = IsMoveInDirection(self.movement, -90) + IsMoveInDirection(self.movement, +90); // if one is nonzero, other is always zero
1321                         if(self.stat_sv_maxairstrafespeed)
1322                                 wishspeed = min(wishspeed, GeomLerp(self.stat_sv_maxairspeed*maxspd_mod, strafity, self.stat_sv_maxairstrafespeed*maxspd_mod));
1323                         if(self.stat_sv_airstrafeaccelerate)
1324                                 airaccel = GeomLerp(airaccel, strafity, self.stat_sv_airstrafeaccelerate*maxspd_mod);
1325                         if(self.stat_sv_airstrafeaccel_qw)
1326                                 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));
1327                         // !CPM
1328
1329                         if(self.stat_sv_warsowbunny_turnaccel && accelerating && self.movement_y == 0 && self.movement_x != 0)
1330                                 PM_AirAccelerate(wishdir, wishspeed);
1331                         else
1332                                 PM_Accelerate(wishdir, wishspeed, wishspeed0, airaccel, airaccelqw, self.stat_sv_airaccel_qw_stretchfactor, self.stat_sv_airaccel_sideways_friction / maxairspd, self.stat_sv_airspeedlimit_nonqw);
1333
1334                         if(self.stat_sv_aircontrol)
1335                                 CPM_PM_Aircontrol(wishdir, wishspeed2);
1336                 }
1337         }
1338
1339         if((g_cts || g_race) && !IS_OBSERVER(self))
1340         {
1341                 if(vlen(self.velocity - self.velocity_z * '0 0 1') > speedaward_speed)
1342                 {
1343                         speedaward_speed = vlen(self.velocity - self.velocity_z * '0 0 1');
1344                         speedaward_holder = self.netname;
1345                         speedaward_uid = self.crypto_idfp;
1346                         speedaward_lastupdate = time;
1347                 }
1348                 if(speedaward_speed > speedaward_lastsent && time - speedaward_lastupdate > 1)
1349                 {
1350                         string rr = (g_cts) ? CTS_RECORD : RACE_RECORD;
1351                         race_send_speedaward(MSG_ALL);
1352                         speedaward_lastsent = speedaward_speed;
1353                         if (speedaward_speed > speedaward_alltimebest && speedaward_uid != "")
1354                         {
1355                                 speedaward_alltimebest = speedaward_speed;
1356                                 speedaward_alltimebest_holder = speedaward_holder;
1357                                 speedaward_alltimebest_uid = speedaward_uid;
1358                                 db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/speed"), ftos(speedaward_alltimebest));
1359                                 db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/crypto_idfp"), speedaward_alltimebest_uid);
1360                                 race_send_speedaward_alltimebest(MSG_ALL);
1361                         }
1362                 }
1363         }
1364
1365         // WEAPONTODO
1366         float xyspeed;
1367         xyspeed = vlen('1 0 0' * self.velocity_x + '0 1 0' * self.velocity_y);
1368         if(self.weapon == WEP_VORTEX && WEP_CVAR(vortex, charge) && WEP_CVAR(vortex, charge_velocity_rate) && xyspeed > WEP_CVAR(vortex, charge_minspeed))
1369         {
1370                 // add a maximum of charge_velocity_rate when going fast (f = 1), gradually increasing from minspeed (f = 0) to maxspeed
1371                 xyspeed = min(xyspeed, WEP_CVAR(vortex, charge_maxspeed));
1372                 f = (xyspeed - WEP_CVAR(vortex, charge_minspeed)) / (WEP_CVAR(vortex, charge_maxspeed) - WEP_CVAR(vortex, charge_minspeed));
1373                 // add the extra charge
1374                 self.vortex_charge = min(1, self.vortex_charge + WEP_CVAR(vortex, charge_velocity_rate) * f * frametime);
1375         }
1376 :end
1377         if(self.flags & FL_ONGROUND)
1378                 self.lastground = time;
1379
1380         // conveyors: then break velocity again
1381         if(self.conveyor.state)
1382                 self.velocity += self.conveyor.movedir;
1383
1384         self.lastflags = self.flags;
1385         self.lastclassname = self.classname;
1386 }