qcsrc/server/cl_physics.qc

   1 .float race_penalty;
   2 .float restart_jump;
   3
   4 float sv_accelerate;
   5 float sv_friction;
   6 float sv_maxspeed;
   7 float sv_airaccelerate;
   8 float sv_maxairspeed;
   9 float sv_stopspeed;
  10 float sv_gravity;
  11 float sv_airaccel_sideways_friction;
  12 float sv_airaccel_qw;
  13 float sv_airstopaccelerate;
  14 float sv_airstrafeaccelerate;
  15 float sv_maxairstrafespeed;
  16 float sv_airstrafeaccel_qw;
  17 float sv_aircontrol;
  18 float sv_aircontrol_power;
  19 float sv_aircontrol_penalty;
  20 float sv_warsowbunny_airforwardaccel;
  21 float sv_warsowbunny_accel;
  22 float sv_warsowbunny_topspeed;
  23 float sv_warsowbunny_turnaccel;
  24 float sv_warsowbunny_backtosideratio;
  25 float sv_airspeedlimit_nonqw;
  26
  27 .float ladder_time;
  28 .entity ladder_entity;
  29 .float gravity;
  30 .float swamp_slowdown;
  31 .float lastflags;
  32 .float lastground;
  33 .float wasFlying;
  34 .float spectatorspeed;
  35
  36 .float multijump_count;
  37 .float multijump_ready;
  38 .float prevjumpbutton;
  39
  40 .float nexspeed;
  41
  42 /*
  43 =============
  44 PlayerJump
  45
  46 When you press the jump key
  47 =============
  48 */
  49 void PlayerJump (void)
  50 {
  51         float mjumpheight;
  52         float doublejump;
  53
  54         doublejump = FALSE;
  55         if (sv_doublejump)
  56         {
  57                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
  58                 if (trace_fraction < 1 && trace_plane_normal_z > 0.7)
  59                         doublejump = TRUE;
  60         }
  61
  62         mjumpheight = cvar("sv_jumpvelocity");
  63         if (self.waterlevel >= WATERLEVEL_SWIMMING)
  64         {
  65                 if (self.watertype == CONTENT_WATER)
  66                         self.velocity_z = 200;
  67                 else if (self.watertype == CONTENT_SLIME)
  68                         self.velocity_z = 80;
  69                 else
  70                         self.velocity_z = 50;
  71
  72                 return;
  73         }
  74
  75         if (cvar("g_multijump"))
  76         {
  77                 if (self.prevjumpbutton == FALSE && !(self.flags & FL_ONGROUND)) // jump button pressed this frame and we are in midair
  78                         self.multijump_ready = TRUE;  // this is necessary to check that we released the jump button and pressed it again
  79                 else
  80                         self.multijump_ready = FALSE;
  81         }
  82
  83         if(!doublejump && self.multijump_ready && self.multijump_count < cvar("g_multijump") && self.velocity_z > cvar("g_multijump_speed"))
  84         {
  85                 // doublejump = FALSE; // checked above in the if
  86                 if (cvar("g_multijump") > 0)
  87                 {
  88                         if (cvar("g_multijump_add") == 0) // in this case we make the z velocity == jumpvelocity
  89                         {
  90                                 if (self.velocity_z < mjumpheight)
  91                                 {
  92                                         doublejump = TRUE;
  93                                         self.velocity_z = 0;
  94                                 }
  95                         }
  96                         else
  97                                 doublejump = TRUE;
  98
  99                         if(doublejump)
 100                         {
 101                                 if(self.movement_x != 0 || self.movement_y != 0) // don't remove all speed if player isnt pressing any movement keys
 102                                 {
 103                                         float curspeed;
 104                                         vector wishvel, wishdir;
 105
 106                                         curspeed = max(
 107                                                 vlen(vec2(self.velocity)), // current xy speed
 108                                                 vlen(vec2(antilag_takebackavgvelocity(self, max(self.lastteleporttime + sys_frametime, time - 0.25), time))) // average xy topspeed over the last 0.25 secs
 109                                         );
 110                                         makevectors(self.v_angle_y * '0 1 0');
 111                                         wishvel = v_forward * self.movement_x + v_right * self.movement_y;
 112                                         wishdir = normalize(wishvel);
 113
 114                                         self.velocity_x = wishdir_x * curspeed; // allow "dodging" at a multijump
 115                                         self.velocity_y = wishdir_y * curspeed;
 116                                         // keep velocity_z unchanged!
 117                                 }
 118                                 self.multijump_count += 1;
 119                         }
 120                 }
 121                 self.multijump_ready = FALSE; // require releasing and pressing the jump button again for the next jump
 122         }
 123
 124         if (!doublejump)
 125                 if (!(self.flags & FL_ONGROUND))
 126                         return;
 127
 128         if(!sv_pogostick)
 129                 if (!(self.flags & FL_JUMPRELEASED))
 130                         return;
 131
 132         if(self.health <= g_bloodloss)
 133                 return;
 134
 135         if(g_runematch)
 136         {
 137                 if(self.runes & RUNE_SPEED)
 138                 {
 139                         if(self.runes & CURSE_SLOW)
 140                                 mjumpheight = mjumpheight * cvar("g_balance_rune_speed_combo_jumpheight");
 141                         else
 142                                 mjumpheight = mjumpheight * cvar("g_balance_rune_speed_jumpheight");
 143                 }
 144                 else if(self.runes & CURSE_SLOW)
 145                 {
 146                         mjumpheight = mjumpheight * cvar("g_balance_curse_slow_jumpheight");
 147                 }
 148         }
 149
 150         if(g_minstagib && (self.items & IT_INVINCIBLE))
 151         {
 152                 mjumpheight = mjumpheight * cvar("g_minstagib_speed_jumpheight");
 153         }
 154
 155         // sv_jumpspeedcap_min/sv_jumpspeedcap_max act as baseline
 156         // velocity bounds.  Final velocity is bound between (jumpheight *
 157         // min + jumpheight) and (jumpheight * max + jumpheight);
 158
 159         if(cvar_string("sv_jumpspeedcap_min") != "")
 160         {
 161                 float minjumpspeed;
 162
 163                 minjumpspeed = mjumpheight * cvar("sv_jumpspeedcap_min");
 164
 165                 if (self.velocity_z < minjumpspeed)
 166                         mjumpheight += minjumpspeed - self.velocity_z;
 167         }
 168
 169         if(cvar_string("sv_jumpspeedcap_max") != "")
 170         {
 171                 // don't do jump speedcaps on ramps to preserve old xonotic ramjump style
 172                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
 173
 174                 if(!(trace_fraction < 1 && trace_plane_normal_z < 0.98 && cvar("sv_jumpspeedcap_max_disable_on_ramps")))
 175                 {
 176                         float maxjumpspeed;
 177
 178                         maxjumpspeed = mjumpheight * cvar("sv_jumpspeedcap_max");
 179
 180                         if (self.velocity_z > maxjumpspeed)
 181                                 mjumpheight -= self.velocity_z - maxjumpspeed;
 182                 }
 183         }
 184
 185         if(!(self.lastflags & FL_ONGROUND))
 186         {
 187                 if(cvar("speedmeter"))
 188                         dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
 189                 if(self.lastground < time - 0.3)
 190                 {
 191                         self.velocity_x *= (1 - cvar("sv_friction_on_land"));
 192                         self.velocity_y *= (1 - cvar("sv_friction_on_land"));
 193                 }
 194                 if(self.jumppadcount > 1)
 195                         dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
 196                 self.jumppadcount = 0;
 197         }
 198
 199         self.velocity_z = self.velocity_z + mjumpheight;
 200         self.oldvelocity_z = self.velocity_z;
 201
 202         self.flags &~= FL_ONGROUND;
 203         self.flags &~= FL_JUMPRELEASED;
 204
 205         if (self.crouch)
 206                 setanim(self, self.anim_duckjump, FALSE, TRUE, TRUE);
 207         else
 208                 setanim(self, self.anim_jump, FALSE, TRUE, TRUE);
 209
 210         if(g_jump_grunt)
 211                 PlayerSound(playersound_jump, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 212
 213         self.restart_jump = -1; // restart jump anim next time
 214         // value -1 is used to not use the teleport bit (workaround for tiny hitch when re-jumping)
 215 }
 216
 217 void CheckWaterJump()
 218 {
 219         local vector start, end;
 220
 221 // check for a jump-out-of-water
 222         makevectors (self.angles);
 223         start = self.origin;
 224         start_z = start_z + 8;
 225         v_forward_z = 0;
 226         normalize(v_forward);
 227         end = start + v_forward*24;
 228         traceline (start, end, TRUE, self);
 229         if (trace_fraction < 1)
 230         {       // solid at waist
 231                 start_z = start_z + self.maxs_z - 8;
 232                 end = start + v_forward*24;
 233                 self.movedir = trace_plane_normal * -50;
 234                 traceline (start, end, TRUE, self);
 235                 if (trace_fraction == 1)
 236                 {       // open at eye level
 237                         self.flags |= FL_WATERJUMP;
 238                         self.velocity_z = 225;
 239                         self.flags &~= FL_JUMPRELEASED;
 240                         self.teleport_time = time + 2;  // safety net
 241                         return;
 242                 }
 243         }
 244 };
 245
 246 float racecar_angle(float forward, float down)
 247 {
 248         float ret, angle_mult;
 249
 250         if(forward < 0)
 251         {
 252                 forward = -forward;
 253                 down = -down;
 254         }
 255
 256         ret = vectoyaw('0 1 0' * down + '1 0 0' * forward);
 257
 258         angle_mult = forward / (800 + forward);
 259
 260         if(ret > 180)
 261                 return ret * angle_mult + 360 * (1 - angle_mult);
 262         else
 263                 return ret * angle_mult;
 264 }
 265
 266 void RaceCarPhysics()
 267 {
 268         // using this move type for "big rigs"
 269         // the engine does not push the entity!
 270
 271         float accel, steer, f;
 272         vector angles_save, rigvel;
 273
 274         angles_save = self.angles;
 275         accel = bound(-1, self.movement_x / sv_maxspeed, 1);
 276         steer = bound(-1, self.movement_y / sv_maxspeed, 1);
 277
 278         if(g_bugrigs_reverse_speeding)
 279         {
 280                 if(accel < 0)
 281                 {
 282                         // back accel is DIGITAL
 283                         // to prevent speedhack
 284                         if(accel < -0.5)
 285                                 accel = -1;
 286                         else
 287                                 accel = 0;
 288                 }
 289         }
 290
 291         self.angles_x = 0;
 292         self.angles_z = 0;
 293         makevectors(self.angles); // new forward direction!
 294
 295         if(self.flags & FL_ONGROUND || g_bugrigs_air_steering)
 296         {
 297                 float myspeed, upspeed, steerfactor, accelfactor;
 298
 299                 myspeed = self.velocity * v_forward;
 300                 upspeed = self.velocity * v_up;
 301
 302                 // responsiveness factor for steering and acceleration
 303                 f = 1 / (1 + pow(max(-myspeed, myspeed) / g_bugrigs_speed_ref, g_bugrigs_speed_pow));
 304                 //MAXIMA: f(v) := 1 / (1 + (v / g_bugrigs_speed_ref) ^ g_bugrigs_speed_pow);
 305
 306                 if(myspeed < 0 && g_bugrigs_reverse_spinning)
 307                         steerfactor = -myspeed * g_bugrigs_steer;
 308                 else
 309                         steerfactor = -myspeed * f * g_bugrigs_steer;
 310
 311                 if(myspeed < 0 && g_bugrigs_reverse_speeding)
 312                         accelfactor = g_bugrigs_accel;
 313                 else
 314                         accelfactor = f * g_bugrigs_accel;
 315                 //MAXIMA: accel(v) := f(v) * g_bugrigs_accel;
 316
 317                 if(accel < 0)
 318                 {
 319                         if(myspeed > 0)
 320                         {
 321                                 myspeed = max(0, myspeed - frametime * (g_bugrigs_friction_floor - g_bugrigs_friction_brake * accel));
 322                         }
 323                         else
 324                         {
 325                                 if(!g_bugrigs_reverse_speeding)
 326                                         myspeed = min(0, myspeed + frametime * g_bugrigs_friction_floor);
 327                         }
 328                 }
 329                 else
 330                 {
 331                         if(myspeed >= 0)
 332                         {
 333                                 myspeed = max(0, myspeed - frametime * g_bugrigs_friction_floor);
 334                         }
 335                         else
 336                         {
 337                                 if(g_bugrigs_reverse_stopping)
 338                                         myspeed = 0;
 339                                 else
 340                                         myspeed = min(0, myspeed + frametime * (g_bugrigs_friction_floor + g_bugrigs_friction_brake * accel));
 341                         }
 342                 }
 343                 // terminal velocity = velocity at which 50 == accelfactor, that is, 1549 units/sec
 344                 //MAXIMA: friction(v) := g_bugrigs_friction_floor;
 345
 346                 self.angles_y += steer * frametime * steerfactor; // apply steering
 347                 makevectors(self.angles); // new forward direction!
 348
 349                 myspeed += accel * accelfactor * frametime;
 350
 351                 rigvel = myspeed * v_forward + '0 0 1' * upspeed;
 352         }
 353         else
 354         {
 355                 myspeed = vlen(self.velocity);
 356
 357                 // responsiveness factor for steering and acceleration
 358                 f = 1 / (1 + pow(max(0, myspeed / g_bugrigs_speed_ref), g_bugrigs_speed_pow));
 359                 steerfactor = -myspeed * f;
 360                 self.angles_y += steer * frametime * steerfactor; // apply steering
 361
 362                 rigvel = self.velocity;
 363                 makevectors(self.angles); // new forward direction!
 364         }
 365
 366         rigvel = rigvel * max(0, 1 - vlen(rigvel) * g_bugrigs_friction_air * frametime);
 367         //MAXIMA: airfriction(v) := v * v * g_bugrigs_friction_air;
 368         //MAXIMA: total_acceleration(v) := accel(v) - friction(v) - airfriction(v);
 369         //MAXIMA: solve(total_acceleration(v) = 0, v);
 370
 371         if(g_bugrigs_planar_movement)
 372         {
 373                 vector rigvel_xy, neworigin, up;
 374                 float mt;
 375
 376                 rigvel_z -= frametime * sv_gravity; // 4x gravity plays better
 377                 rigvel_xy = vec2(rigvel);
 378
 379                 if(g_bugrigs_planar_movement_car_jumping && !g_touchexplode) // touchexplode is a better way to handle collisions
 380                         mt = MOVE_NORMAL;
 381                 else
 382                         mt = MOVE_NOMONSTERS;
 383
 384                 tracebox(self.origin, self.mins, self.maxs, self.origin + '0 0 1024', mt, self);
 385                 up = trace_endpos - self.origin;
 386
 387                 // BUG RIGS: align the move to the surface instead of doing collision testing
 388                 // can we move?
 389                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos + rigvel_xy * frametime, mt, self);
 390
 391                 // align to surface
 392                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos - up + '0 0 1' * rigvel_z * frametime, mt, self);
 393
 394                 if(trace_fraction < 0.5)
 395                 {
 396                         trace_fraction = 1;
 397                         neworigin = self.origin;
 398                 }
 399                 else
 400                         neworigin = trace_endpos;
 401
 402                 if(trace_fraction < 1)
 403                 {
 404                         // now set angles_x so that the car points parallel to the surface
 405                         self.angles = vectoangles(
 406                                         '1 0 0' * v_forward_x * trace_plane_normal_z
 407                                         +
 408                                         '0 1 0' * v_forward_y * trace_plane_normal_z
 409                                         +
 410                                         '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y)
 411                                         );
 412                         self.flags |= FL_ONGROUND;
 413                 }
 414                 else
 415                 {
 416                         // now set angles_x so that the car points forward, but is tilted in velocity direction
 417                         self.flags &~= FL_ONGROUND;
 418                 }
 419
 420                 self.velocity = (neworigin - self.origin) * (1.0 / frametime);
 421                 self.movetype = MOVETYPE_NOCLIP;
 422         }
 423         else
 424         {
 425                 rigvel_z -= frametime * sv_gravity; // 4x gravity plays better
 426                 self.velocity = rigvel;
 427                 self.movetype = MOVETYPE_FLY;
 428         }
 429
 430         trace_fraction = 1;
 431         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 4', MOVE_NORMAL, self);
 432         if(trace_fraction != 1)
 433         {
 434                 self.angles = vectoangles2(
 435                                 '1 0 0' * v_forward_x * trace_plane_normal_z
 436                                 +
 437                                 '0 1 0' * v_forward_y * trace_plane_normal_z
 438                                 +
 439                                 '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y),
 440                                 trace_plane_normal
 441                                 );
 442         }
 443         else
 444         {
 445                 vector vel_local;
 446
 447                 vel_local_x = v_forward * self.velocity;
 448                 vel_local_y = v_right * self.velocity;
 449                 vel_local_z = v_up * self.velocity;
 450
 451                 self.angles_x = racecar_angle(vel_local_x, vel_local_z);
 452                 self.angles_z = racecar_angle(-vel_local_y, vel_local_z);
 453         }
 454
 455         // smooth the angles
 456         vector vf1, vu1, smoothangles;
 457         makevectors(self.angles);
 458         f = bound(0, frametime * g_bugrigs_angle_smoothing, 1);
 459         if(f == 0)
 460                 f = 1;
 461         vf1 = v_forward * f;
 462         vu1 = v_up * f;
 463         makevectors(angles_save);
 464         vf1 = vf1 + v_forward * (1 - f);
 465         vu1 = vu1 + v_up * (1 - f);
 466         smoothangles = vectoangles2(vf1, vu1);
 467         self.angles_x = -smoothangles_x;
 468         self.angles_z =  smoothangles_z;
 469 }
 470
 471 float IsMoveInDirection(vector mv, float angle) // key mix factor
 472 {
 473         if(mv_x == 0 && mv_y == 0)
 474                 return 0; // avoid division by zero
 475         angle -= RAD2DEG * atan2(mv_y, mv_x);
 476         angle = remainder(angle, 360) / 45;
 477         if(angle >  1)
 478                 return 0;
 479         if(angle < -1)
 480                 return 0;
 481         return 1 - fabs(angle);
 482 }
 483
 484 float GeomLerp(float a, float lerp, float b)
 485 {
 486         if(a == 0)
 487         {
 488                 if(lerp < 1)
 489                         return 0;
 490                 else
 491                         return b;
 492         }
 493         if(b == 0)
 494         {
 495                 if(lerp > 0)
 496                         return 0;
 497                 else
 498                         return a;
 499         }
 500         return a * pow(fabs(b / a), lerp);
 501 }
 502
 503 void CPM_PM_Aircontrol(vector wishdir, float wishspeed)
 504 {
 505         float zspeed, xyspeed, dot, k;
 506
 507 #if 0
 508         // this doesn't play well with analog input
 509         if(self.movement_x == 0 || self.movement_y != 0)
 510                 return; // can't control movement if not moving forward or backward
 511         k = 32;
 512 #else
 513         k = 32 * (2 * IsMoveInDirection(self.movement, 0) - 1);
 514         if(k <= 0)
 515                 return;
 516 #endif
 517
 518         k *= bound(0, wishspeed / sv_maxairspeed, 1);
 519
 520         zspeed = self.velocity_z;
 521         self.velocity_z = 0;
 522         xyspeed = vlen(self.velocity); self.velocity = normalize(self.velocity);
 523
 524         dot = self.velocity * wishdir;
 525
 526         if(dot > 0) // we can't change direction while slowing down
 527         {
 528                 k *= pow(dot, sv_aircontrol_power)*frametime;
 529                 xyspeed = max(0, xyspeed - sv_aircontrol_penalty * sqrt(max(0, 1 - dot*dot)) * k/32);
 530                 k *= sv_aircontrol;
 531                 self.velocity = normalize(self.velocity * xyspeed + wishdir * k);
 532         }
 533
 534         self.velocity = self.velocity * xyspeed;
 535         self.velocity_z = zspeed;
 536 }
 537
 538 float AdjustAirAccelQW(float accelqw, float factor)
 539 {
 540         return copysign(bound(0.000001, 1 - (1 - fabs(accelqw)) * factor, 1), accelqw);
 541 }
 542
 543 // example config for alternate speed clamping:
 544 //   sv_airaccel_qw 0.8
 545 //   sv_airaccel_sideways_friction 0
 546 //   prvm_globalset server speedclamp_mode 1
 547 //     (or 2)
 548 void PM_Accelerate(vector wishdir, float wishspeed, float wishspeed0, float accel, float accelqw, float sidefric, float speedlimit)
 549 {
 550         float vel_straight;
 551         float vel_z;
 552         vector vel_perpend;
 553         float step;
 554
 555         vector vel_xy;
 556         float vel_xy_current;
 557         float vel_xy_backward, vel_xy_forward;
 558         float speedclamp;
 559
 560         speedclamp = (accelqw < 0);
 561         if(speedclamp)
 562                 accelqw = -accelqw;
 563
 564         if(cvar("sv_gameplayfix_q2airaccelerate"))
 565                 wishspeed0 = wishspeed;
 566
 567         vel_straight = self.velocity * wishdir;
 568         vel_z = self.velocity_z;
 569         vel_xy = vec2(self.velocity);
 570         vel_perpend = vel_xy - vel_straight * wishdir;
 571
 572         step = accel * frametime * wishspeed0;
 573
 574         vel_xy_current  = vlen(vel_xy);
 575         if(speedlimit)
 576                 accelqw = AdjustAirAccelQW(accelqw, (speedlimit - bound(wishspeed, vel_xy_current, speedlimit)) / max(1, speedlimit - wishspeed));
 577         vel_xy_forward  = vel_xy_current + bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
 578         vel_xy_backward = vel_xy_current - bound(0, wishspeed + vel_xy_current, step) * accelqw - step * (1 - accelqw);
 579         if(vel_xy_backward < 0)
 580                 vel_xy_backward = 0; // not that it REALLY occurs that this would cause wrong behaviour afterwards
 581
 582         vel_straight = vel_straight + bound(0, wishspeed - vel_straight, step) * accelqw + step * (1 - accelqw);
 583
 584         if(sidefric < 0 && (vel_perpend*vel_perpend))
 585                 // negative: only apply so much sideways friction to stay below the speed you could get by "braking"
 586         {
 587                 float f, fminimum;
 588                 f = max(0, 1 + frametime * wishspeed * sidefric);
 589                 fminimum = (vel_xy_backward*vel_xy_backward - vel_straight*vel_straight) / (vel_perpend*vel_perpend);
 590                 // this cannot be > 1
 591                 if(fminimum <= 0)
 592                         vel_perpend = vel_perpend * max(0, f);
 593                 else
 594                 {
 595                         fminimum = sqrt(fminimum);
 596                         vel_perpend = vel_perpend * max(fminimum, f);
 597                 }
 598         }
 599         else
 600                 vel_perpend = vel_perpend * max(0, 1 - frametime * wishspeed * sidefric);
 601
 602         vel_xy = vel_straight * wishdir + vel_perpend;
 603
 604         if(speedclamp)
 605         {
 606                 // ensure we don't get too fast or decelerate faster than we should
 607                 vel_xy_current = min(vlen(vel_xy), vel_xy_forward);
 608                 if(vel_xy_current > 0) // prevent division by zero
 609                         vel_xy = normalize(vel_xy) * vel_xy_current;
 610         }
 611
 612         self.velocity = vel_xy + vel_z * '0 0 1';
 613 }
 614
 615 void PM_AirAccelerate(vector wishdir, float wishspeed)
 616 {
 617         vector curvel, wishvel, acceldir, curdir;
 618         float addspeed, accelspeed, curspeed, f;
 619         float dot;
 620
 621         if(wishspeed == 0)
 622                 return;
 623
 624         curvel = self.velocity;
 625         curvel_z = 0;
 626         curspeed = vlen(curvel);
 627
 628         if(wishspeed > curspeed * 1.01)
 629         {
 630                 wishspeed = min(wishspeed, curspeed + sv_warsowbunny_airforwardaccel * sv_maxspeed * frametime);
 631         }
 632         else
 633         {
 634                 f = max(0, (sv_warsowbunny_topspeed - curspeed) / (sv_warsowbunny_topspeed - sv_maxspeed));
 635                 wishspeed = max(curspeed, sv_maxspeed) + sv_warsowbunny_accel * f * sv_maxspeed * frametime;
 636         }
 637         wishvel = wishdir * wishspeed;
 638         acceldir = wishvel - curvel;
 639         addspeed = vlen(acceldir);
 640         acceldir = normalize(acceldir);
 641
 642         accelspeed = min(addspeed, sv_warsowbunny_turnaccel * sv_maxspeed * frametime);
 643
 644         if(sv_warsowbunny_backtosideratio < 1)
 645         {
 646                 curdir = normalize(curvel);
 647                 dot = acceldir * curdir;
 648                 if(dot < 0)
 649                         acceldir = acceldir - (1 - sv_warsowbunny_backtosideratio) * dot * curdir;
 650         }
 651
 652         self.velocity += accelspeed * acceldir;
 653 }
 654
 655 .vector movement_old;
 656 .float buttons_old;
 657 .vector v_angle_old;
 658 .string lastclassname;
 659
 660 .float() PlayerPhysplug;
 661
 662 string specialcommand = "xwxwxsxsxaxdxaxdx1x ";
 663 .float specialcommand_pos;
 664 void SpecialCommand()
 665 {
 666 #ifdef TETRIS
 667         TetrisImpulse();
 668 #else
 669         if(!CheatImpulse(99))
 670                 print("A hollow voice says \"Plugh\".\n");
 671 #endif
 672 }
 673
 674 float speedaward_speed;
 675 string speedaward_holder;
 676 void race_send_speedaward(float msg)
 677 {
 678         // send the best speed of the round
 679         WriteByte(msg, SVC_TEMPENTITY);
 680         WriteByte(msg, TE_CSQC_RACE);
 681         WriteByte(msg, RACE_NET_SPEED_AWARD);
 682         WriteInt24_t(msg, floor(speedaward_speed+0.5));
 683         WriteString(msg, speedaward_holder);
 684 }
 685
 686 float speedaward_alltimebest;
 687 string speedaward_alltimebest_holder;
 688 void race_send_speedaward_alltimebest(float msg)
 689 {
 690         // send the best speed
 691         WriteByte(msg, SVC_TEMPENTITY);
 692         WriteByte(msg, TE_CSQC_RACE);
 693         WriteByte(msg, RACE_NET_SPEED_AWARD_BEST);
 694         WriteInt24_t(msg, floor(speedaward_alltimebest+0.5));
 695         WriteString(msg, speedaward_alltimebest_holder);
 696 }
 697
 698 string GetMapname(void);
 699 float speedaward_lastupdate;
 700 float speedaward_lastsent;
 701 void SV_PlayerPhysics()
 702 {
 703         local vector wishvel, wishdir, v;
 704         local float wishspeed, f, maxspd_mod, spd, maxairspd, airaccel, swampspd_mod, buttons;
 705         string temps;
 706         float buttons_prev;
 707         float not_allowed_to_move;
 708         string c;
 709
 710         // fix physics stats for g_movement_highspeed
 711         self.stat_sv_airaccel_qw = AdjustAirAccelQW(sv_airaccel_qw, autocvar_g_movement_highspeed);
 712         if(sv_airstrafeaccel_qw)
 713                 self.stat_sv_airstrafeaccel_qw = AdjustAirAccelQW(sv_airstrafeaccel_qw, autocvar_g_movement_highspeed);
 714         else
 715                 self.stat_sv_airstrafeaccel_qw = 0;
 716         self.stat_sv_airspeedlimit_nonqw = sv_airspeedlimit_nonqw * autocvar_g_movement_highspeed;
 717
 718     if(self.PlayerPhysplug)
 719         if(self.PlayerPhysplug())
 720             return;
 721
 722         self.race_movetime_frac += frametime;
 723         f = floor(self.race_movetime_frac);
 724         self.race_movetime_frac -= f;
 725         self.race_movetime_count += f;
 726         self.race_movetime = self.race_movetime_frac + self.race_movetime_count;
 727
 728         anticheat_physics();
 729
 730         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);
 731
 732         if(!buttons)
 733                 c = "x";
 734         else if(buttons == 1)
 735                 c = "1";
 736         else if(buttons == 2)
 737                 c = " ";
 738         else if(buttons == 128)
 739                 c = "s";
 740         else if(buttons == 256)
 741                 c = "w";
 742         else if(buttons == 512)
 743                 c = "a";
 744         else if(buttons == 1024)
 745                 c = "d";
 746         else
 747                 c = "?";
 748
 749         if(c == substring(specialcommand, self.specialcommand_pos, 1))
 750         {
 751                 self.specialcommand_pos += 1;
 752                 if(self.specialcommand_pos >= strlen(specialcommand))
 753                 {
 754                         self.specialcommand_pos = 0;
 755                         SpecialCommand();
 756                         return;
 757                 }
 758         }
 759         else if(self.specialcommand_pos && (c != substring(specialcommand, self.specialcommand_pos - 1, 1)))
 760                 self.specialcommand_pos = 0;
 761
 762         if(!sv_maxidle_spectatorsareidle || self.movetype == MOVETYPE_WALK)
 763         {
 764                 if(buttons != self.buttons_old || self.movement != self.movement_old || self.v_angle != self.v_angle_old)
 765                         self.parm_idlesince = time;
 766         }
 767         buttons_prev = self.buttons_old;
 768         self.buttons_old = buttons;
 769         self.movement_old = self.movement;
 770         self.v_angle_old = self.v_angle;
 771
 772         if(time < self.nickspamtime)
 773         if(self.nickspamcount >= cvar("g_nick_flood_penalty_yellow"))
 774         {
 775                 // slight annoyance for nick change scripts
 776                 self.movement = -1 * self.movement;
 777                 self.BUTTON_ATCK = self.BUTTON_JUMP = self.BUTTON_ATCK2 = self.BUTTON_ZOOM = self.BUTTON_CROUCH = self.BUTTON_HOOK = self.BUTTON_USE = 0;
 778
 779                 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!
 780                 {
 781                         self.angles_x = random() * 360;
 782                         self.angles_y = random() * 360;
 783                         // at least I'm not forcing retardedview by also assigning to angles_z
 784                         self.fixangle = 1;
 785                 }
 786         }
 787
 788         if (self.punchangle != '0 0 0')
 789         {
 790                 f = vlen(self.punchangle) - 10 * frametime;
 791                 if (f > 0)
 792                         self.punchangle = normalize(self.punchangle) * f;
 793                 else
 794                         self.punchangle = '0 0 0';
 795         }
 796
 797         if (self.punchvector != '0 0 0')
 798         {
 799                 f = vlen(self.punchvector) - 30 * frametime;
 800                 if (f > 0)
 801                         self.punchvector = normalize(self.punchvector) * f;
 802                 else
 803                         self.punchvector = '0 0 0';
 804         }
 805
 806         if (clienttype(self) == CLIENTTYPE_BOT)
 807         {
 808                 if(playerdemo_read())
 809                         return;
 810                 bot_think();
 811         }
 812
 813         MUTATOR_CALLHOOK(PlayerPhysics);
 814
 815         self.items &~= IT_USING_JETPACK;
 816
 817         if(self.classname == "player")
 818         {
 819                 if(self.race_penalty)
 820                         if(time > self.race_penalty)
 821                                 self.race_penalty = 0;
 822
 823                 not_allowed_to_move = 0;
 824                 if(self.race_penalty)
 825                         not_allowed_to_move = 1;
 826                 if(!cvar("sv_ready_restart_after_countdown"))
 827                 if(time < game_starttime)
 828                         not_allowed_to_move = 1;
 829
 830                 if(not_allowed_to_move)
 831                 {
 832                         self.velocity = '0 0 0';
 833                         self.movetype = MOVETYPE_NONE;
 834                         self.disableclientprediction = 2;
 835                 }
 836                 else if(self.disableclientprediction == 2)
 837                 {
 838                         if(self.movetype == MOVETYPE_NONE)
 839                                 self.movetype = MOVETYPE_WALK;
 840                         self.disableclientprediction = 0;
 841                 }
 842         }
 843
 844         if (self.movetype == MOVETYPE_NONE)
 845                 return;
 846
 847         maxspd_mod = 1;
 848
 849         if(g_runematch)
 850         {
 851                 if(self.runes & RUNE_SPEED)
 852                 {
 853                         if(self.runes & CURSE_SLOW)
 854                                 maxspd_mod = maxspd_mod * cvar("g_balance_rune_speed_combo_moverate");
 855                         else
 856                                 maxspd_mod = maxspd_mod * cvar("g_balance_rune_speed_moverate");
 857                 }
 858                 else if(self.runes & CURSE_SLOW)
 859                 {
 860                         maxspd_mod = maxspd_mod * cvar("g_balance_curse_slow_moverate");
 861                 }
 862         }
 863
 864         if(g_minstagib && (self.items & IT_INVINCIBLE))
 865         {
 866                 maxspd_mod = cvar("g_minstagib_speed_moverate");
 867         }
 868
 869         if(g_nexball && self.ballcarried)
 870         {
 871                 maxspd_mod = cvar("g_nexball_basketball_carrier_speed");
 872         }
 873
 874         swampspd_mod = 1;
 875         if(self.in_swamp) {
 876                 swampspd_mod = self.swamp_slowdown; //cvar("g_balance_swamp_moverate");
 877         }
 878
 879         if(self.classname != "player")
 880         {
 881                 maxspd_mod = cvar("sv_spectator_speed_multiplier");
 882                 if(!self.spectatorspeed)
 883                         self.spectatorspeed = maxspd_mod;
 884                 if(self.impulse && self.impulse <= 19)
 885                 {
 886                         if(self.lastclassname != "player")
 887                         {
 888                                 if(self.impulse == 10 || self.impulse == 15 || self.impulse == 18)
 889                                         self.spectatorspeed = bound(1, self.spectatorspeed + 0.5, 5);
 890                                 else if(self.impulse == 11)
 891                                         self.spectatorspeed = maxspd_mod;
 892                                 else if(self.impulse == 12 || self.impulse == 16  || self.impulse == 19)
 893                                         self.spectatorspeed = bound(1, self.spectatorspeed - 0.5, 5);
 894                                 else if(self.impulse >= 1 && self.impulse <= 9)
 895                                         self.spectatorspeed = 1 + 0.5 * (self.impulse - 1);
 896                         } // otherwise just clear
 897                         self.impulse = 0;
 898                 }
 899                 maxspd_mod = self.spectatorspeed;
 900         }
 901
 902         spd = max(sv_maxspeed, sv_maxairspeed) * maxspd_mod * swampspd_mod;
 903         if(self.speed != spd)
 904         {
 905                 self.speed = spd;
 906                 temps = ftos(spd);
 907                 stuffcmd(self, strcat("cl_forwardspeed ", temps, "\n"));
 908                 stuffcmd(self, strcat("cl_backspeed ", temps, "\n"));
 909                 stuffcmd(self, strcat("cl_sidespeed ", temps, "\n"));
 910                 stuffcmd(self, strcat("cl_upspeed ", temps, "\n"));
 911         }
 912
 913         maxspd_mod *= swampspd_mod; // only one common speed modder please!
 914         swampspd_mod = 1;
 915
 916         // if dead, behave differently
 917         if (self.deadflag)
 918                 goto end;
 919
 920         if (!self.fixangle && !g_bugrigs)
 921         {
 922                 self.angles_x = 0;
 923                 self.angles_y = self.v_angle_y;
 924                 self.angles_z = 0;
 925         }
 926
 927         if(self.flags & FL_ONGROUND)
 928         if(self.wasFlying)
 929         {
 930                 self.wasFlying = 0;
 931
 932                 if(self.waterlevel < WATERLEVEL_SWIMMING)
 933                 if(time >= self.ladder_time)
 934                 if not(self.hook)
 935                 {
 936                         self.nextstep = time + 0.3 + random() * 0.1;
 937                         trace_dphitq3surfaceflags = 0;
 938                         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 1', MOVE_NOMONSTERS, self);
 939                         if not(trace_dphitq3surfaceflags & Q3SURFACEFLAG_NOSTEPS)
 940                         {
 941                                 if(trace_dphitq3surfaceflags & Q3SURFACEFLAG_METALSTEPS)
 942                                         GlobalSound(globalsound_metalfall, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 943                                 else
 944                                         GlobalSound(globalsound_fall, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 945                         }
 946                 }
 947         }
 948
 949         if(IsFlying(self))
 950                 self.wasFlying = 1;
 951
 952         if(self.classname == "player")
 953         {
 954                 if(self.flags & FL_ONGROUND)
 955                 {
 956                         if (cvar("g_multijump") > 0)
 957                                 self.multijump_count = 0;
 958                         else
 959                                 self.multijump_count = -2; // the cvar value for infinite jumps is -1, so this needs to be smaller
 960                 }
 961
 962                 if (self.BUTTON_JUMP)
 963                         PlayerJump ();
 964                 else
 965                         self.flags |= FL_JUMPRELEASED;
 966
 967                 if (self.waterlevel == WATERLEVEL_SWIMMING)
 968                         CheckWaterJump ();
 969                 self.prevjumpbutton = self.BUTTON_JUMP;
 970         }
 971
 972         if (self.flags & FL_WATERJUMP )
 973         {
 974                 self.velocity_x = self.movedir_x;
 975                 self.velocity_y = self.movedir_y;
 976                 if (time > self.teleport_time || self.waterlevel == WATERLEVEL_NONE)
 977                 {
 978                         self.flags &~= FL_WATERJUMP;
 979                         self.teleport_time = 0;
 980                 }
 981         }
 982         else if (g_bugrigs && self.classname == "player")
 983         {
 984                 RaceCarPhysics();
 985         }
 986         else if (self.movetype == MOVETYPE_NOCLIP || self.movetype == MOVETYPE_FLY)
 987         {
 988                 // noclipping or flying
 989                 self.flags &~= FL_ONGROUND;
 990
 991                 self.velocity = self.velocity * (1 - frametime * sv_friction);
 992                 makevectors(self.v_angle);
 993                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
 994                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
 995                 // acceleration
 996                 wishdir = normalize(wishvel);
 997                 wishspeed = vlen(wishvel);
 998                 if (wishspeed > sv_maxspeed*maxspd_mod)
 999                         wishspeed = sv_maxspeed*maxspd_mod;
1000                 if (time >= self.teleport_time)
1001                         PM_Accelerate(wishdir, wishspeed, wishspeed, sv_accelerate*maxspd_mod, 1, 0, 0);
1002         }
1003         else if (self.waterlevel >= WATERLEVEL_SWIMMING)
1004         {
1005                 // swimming
1006                 self.flags &~= FL_ONGROUND;
1007
1008                 makevectors(self.v_angle);
1009                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
1010                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
1011                 if (wishvel == '0 0 0')
1012                         wishvel = '0 0 -60'; // drift towards bottom
1013
1014                 wishdir = normalize(wishvel);
1015                 wishspeed = vlen(wishvel);
1016                 if (wishspeed > sv_maxspeed*maxspd_mod)
1017                         wishspeed = sv_maxspeed*maxspd_mod;
1018                 wishspeed = wishspeed * 0.7;
1019
1020                 // water friction
1021                 self.velocity = self.velocity * (1 - frametime * sv_friction);
1022
1023                 // water acceleration
1024                 PM_Accelerate(wishdir, wishspeed, wishspeed, sv_accelerate*maxspd_mod, 1, 0, 0);
1025         }
1026         else if (time < self.ladder_time)
1027         {
1028                 // on a spawnfunc_func_ladder or swimming in spawnfunc_func_water
1029                 self.flags &~= FL_ONGROUND;
1030
1031                 self.velocity = self.velocity * (1 - frametime * sv_friction);
1032                 makevectors(self.v_angle);
1033                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
1034                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
1035                 if (self.gravity)
1036                         self.velocity_z = self.velocity_z + self.gravity * sv_gravity * frametime;
1037                 else
1038                         self.velocity_z = self.velocity_z + sv_gravity * frametime;
1039                 if (self.ladder_entity.classname == "func_water")
1040                 {
1041                         f = vlen(wishvel);
1042                         if (f > self.ladder_entity.speed)
1043                                 wishvel = wishvel * (self.ladder_entity.speed / f);
1044
1045                         self.watertype = self.ladder_entity.skin;
1046                         f = self.ladder_entity.origin_z + self.ladder_entity.maxs_z;
1047                         if ((self.origin_z + self.view_ofs_z) < f)
1048                                 self.waterlevel = WATERLEVEL_SUBMERGED;
1049                         else if ((self.origin_z + (self.mins_z + self.maxs_z) * 0.5) < f)
1050                                 self.waterlevel = WATERLEVEL_SWIMMING;
1051                         else if ((self.origin_z + self.mins_z + 1) < f)
1052                                 self.waterlevel = WATERLEVEL_WETFEET;
1053                         else
1054                         {
1055                                 self.waterlevel = WATERLEVEL_NONE;
1056                                 self.watertype = CONTENT_EMPTY;
1057                         }
1058                 }
1059                 // acceleration
1060                 wishdir = normalize(wishvel);
1061                 wishspeed = vlen(wishvel);
1062                 if (wishspeed > sv_maxspeed*maxspd_mod)
1063                         wishspeed = sv_maxspeed*maxspd_mod;
1064                 if (time >= self.teleport_time)
1065                 {
1066                         // water acceleration
1067                         PM_Accelerate(wishdir, wishspeed, wishspeed, sv_accelerate*maxspd_mod, 1, 0, 0);
1068                 }
1069         }
1070         else if ((self.items & IT_JETPACK) && self.BUTTON_HOOK && (!cvar("g_jetpack_fuel") || self.ammo_fuel >= 0.01 || self.items & IT_UNLIMITED_WEAPON_AMMO))
1071         {
1072                 //makevectors(self.v_angle_y * '0 1 0');
1073                 makevectors(self.v_angle);
1074                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1075                 // add remaining speed as Z component
1076                 maxairspd = sv_maxairspeed*max(1, maxspd_mod);
1077                 // fix speedhacks :P
1078                 wishvel = normalize(wishvel) * min(vlen(wishvel) / maxairspd, 1);
1079                 // add the unused velocity as up component
1080                 wishvel_z = 0;
1081
1082                 // if(self.BUTTON_JUMP)
1083                         wishvel_z = sqrt(max(0, 1 - wishvel * wishvel));
1084
1085                 // it is now normalized, so...
1086                 float a_side, a_up, a_add, a_diff;
1087                 a_side = cvar("g_jetpack_acceleration_side");
1088                 a_up = cvar("g_jetpack_acceleration_up");
1089                 a_add = cvar("g_jetpack_antigravity") * sv_gravity;
1090
1091                 wishvel_x *= a_side;
1092                 wishvel_y *= a_side;
1093                 wishvel_z *= a_up;
1094                 wishvel_z += a_add;
1095
1096                 float best;
1097                 best = 0;
1098                 //////////////////////////////////////////////////////////////////////////////////////
1099                 // finding the maximum over all vectors of above form
1100                 // with wishvel having an absolute value of 1
1101                 //////////////////////////////////////////////////////////////////////////////////////
1102                 // we're finding the maximum over
1103                 //   f(a_side, a_up, a_add, z) := a_side * (1 - z^2) + (a_add + a_up * z)^2;
1104                 // for z in the range from -1 to 1
1105                 //////////////////////////////////////////////////////////////////////////////////////
1106                 // maximum is EITHER attained at the single extreme point:
1107                 a_diff = a_side * a_side - a_up * a_up;
1108                 if(a_diff != 0)
1109                 {
1110                         f = a_add * a_up / a_diff; // this is the zero of diff(f(a_side, a_up, a_add, z), z)
1111                         if(f > -1 && f < 1) // can it be attained?
1112                         {
1113                                 best = (a_diff + a_add * a_add) * (a_diff + a_up * a_up) / a_diff;
1114                                 //print("middle\n");
1115                         }
1116                 }
1117                 // OR attained at z = 1:
1118                 f = (a_up + a_add) * (a_up + a_add);
1119                 if(f > best)
1120                 {
1121                         best = f;
1122                         //print("top\n");
1123                 }
1124                 // OR attained at z = -1:
1125                 f = (a_up - a_add) * (a_up - a_add);
1126                 if(f > best)
1127                 {
1128                         best = f;
1129                         //print("bottom\n");
1130                 }
1131                 best = sqrt(best);
1132                 //////////////////////////////////////////////////////////////////////////////////////
1133
1134                 //print("best possible acceleration: ", ftos(best), "\n");
1135
1136                 float fxy, fz;
1137                 fxy = bound(0, 1 - (self.velocity * normalize(wishvel_x * '1 0 0' + wishvel_y * '0 1 0')) / cvar("g_jetpack_maxspeed_side"), 1);
1138                 if(wishvel_z - sv_gravity > 0)
1139                         fz = bound(0, 1 - self.velocity_z / cvar("g_jetpack_maxspeed_up"), 1);
1140                 else
1141                         fz = bound(0, 1 + self.velocity_z / cvar("g_jetpack_maxspeed_up"), 1);
1142
1143                 float fvel;
1144                 fvel = vlen(wishvel);
1145                 wishvel_x *= fxy;
1146                 wishvel_y *= fxy;
1147                 wishvel_z = (wishvel_z - sv_gravity) * fz + sv_gravity;
1148
1149                 fvel = min(1, vlen(wishvel) / best);
1150                 if(cvar("g_jetpack_fuel") && !(self.items & IT_UNLIMITED_WEAPON_AMMO))
1151                         f = min(1, self.ammo_fuel / (cvar("g_jetpack_fuel") * frametime * fvel));
1152                 else
1153                         f = 1;
1154
1155                 //print("this acceleration: ", ftos(vlen(wishvel) * f), "\n");
1156
1157                 if (f > 0 && wishvel != '0 0 0')
1158                 {
1159                         self.velocity = self.velocity + wishvel * f * frametime;
1160                         if not(self.items & IT_UNLIMITED_WEAPON_AMMO)
1161                                 self.ammo_fuel -= cvar("g_jetpack_fuel") * frametime * fvel * f;
1162                         self.flags &~= FL_ONGROUND;
1163                         self.items |= IT_USING_JETPACK;
1164
1165                         // jetpack also inhibits health regeneration, but only for 1 second
1166                         self.pauseregen_finished = max(self.pauseregen_finished, time + cvar("g_balance_pause_fuel_regen"));
1167                 }
1168         }
1169         else if (self.flags & FL_ONGROUND)
1170         {
1171                 // we get here if we ran out of ammo
1172                 if((self.items & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32))
1173                         sprint(self, "You don't have any fuel for the ^2Jetpack\n");
1174
1175                 // walking
1176                 makevectors(self.v_angle_y * '0 1 0');
1177                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1178
1179                 if(!(self.lastflags & FL_ONGROUND))
1180                 {
1181                         if(cvar("speedmeter"))
1182                                 dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
1183                         if(self.lastground < time - 0.3)
1184                                 self.velocity = self.velocity * (1 - cvar("sv_friction_on_land"));
1185                         if(self.jumppadcount > 1)
1186                                 dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
1187                         self.jumppadcount = 0;
1188                 }
1189
1190 #ifdef LETS_TEST_FTEQCC
1191                 if(self.velocity_x || self.velocity_y)
1192                 {
1193                         // good
1194                 }
1195                 else
1196                 {
1197                         if(self.velocity_x)
1198                                 checkclient();
1199                         if(self.velocity_y)
1200                                 checkclient();
1201                 }
1202 #endif
1203
1204                 v = self.velocity;
1205                 v_z = 0;
1206                 f = vlen(v);
1207                 if(f > 0)
1208                 {
1209                         if (f < sv_stopspeed)
1210                                 f = 1 - frametime * (sv_stopspeed / f) * sv_friction;
1211                         else
1212                                 f = 1 - frametime * sv_friction;
1213                         if (f > 0)
1214                                 self.velocity = self.velocity * f;
1215                         else
1216                                 self.velocity = '0 0 0';
1217                 }
1218
1219                 // acceleration
1220                 wishdir = normalize(wishvel);
1221                 wishspeed = vlen(wishvel);
1222                 if (wishspeed > sv_maxspeed*maxspd_mod)
1223                         wishspeed = sv_maxspeed*maxspd_mod;
1224                 if (self.crouch)
1225                         wishspeed = wishspeed * 0.5;
1226                 if (time >= self.teleport_time)
1227                         PM_Accelerate(wishdir, wishspeed, wishspeed, sv_accelerate*maxspd_mod, 1, 0, 0);
1228         }
1229         else
1230         {
1231                 float wishspeed0;
1232                 // we get here if we ran out of ammo
1233                 if((self.items & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32))
1234                         sprint(self, "You don't have any fuel for the ^2Jetpack\n");
1235
1236                 if(maxspd_mod < 1)
1237                 {
1238                         maxairspd = sv_maxairspeed*maxspd_mod;
1239                         airaccel = sv_airaccelerate*maxspd_mod;
1240                 }
1241                 else
1242                 {
1243                         maxairspd = sv_maxairspeed;
1244                         airaccel = sv_airaccelerate;
1245                 }
1246                 // airborn
1247                 makevectors(self.v_angle_y * '0 1 0');
1248                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1249                 // acceleration
1250                 wishdir = normalize(wishvel);
1251                 wishspeed = wishspeed0 = vlen(wishvel);
1252                 if (wishspeed0 > sv_maxspeed*maxspd_mod)
1253                         wishspeed0 = sv_maxspeed*maxspd_mod;
1254                 if (wishspeed > maxairspd)
1255                         wishspeed = maxairspd;
1256                 if (self.crouch)
1257                         wishspeed = wishspeed * 0.5;
1258                 if (time >= self.teleport_time)
1259                 {
1260                         float accelerating;
1261                         float wishspeed2;
1262                         float airaccelqw;
1263                         float strafity;
1264
1265                         airaccelqw = self.stat_sv_airaccel_qw;
1266                         accelerating = (self.velocity * wishdir > 0);
1267                         wishspeed2 = wishspeed;
1268
1269                         // CPM
1270                         if(sv_airstopaccelerate)
1271                         {
1272                                 vector curdir;
1273                                 curdir = self.velocity;
1274                                 curdir_z = 0;
1275                                 curdir = normalize(curdir);
1276                                 airaccel = airaccel + (sv_airstopaccelerate*maxspd_mod - airaccel) * max(0, -(curdir * wishdir));
1277                         }
1278                         // note that for straight forward jumping:
1279                         // step = accel * frametime * wishspeed0;
1280                         // accel  = bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
1281                         // -->
1282                         // dv/dt = accel * maxspeed (when slow)
1283                         // dv/dt = accel * maxspeed * (1 - accelqw) (when fast)
1284                         // log dv/dt = logaccel + logmaxspeed (when slow)
1285                         // log dv/dt = logaccel + logmaxspeed + log(1 - accelqw) (when fast)
1286                         strafity = IsMoveInDirection(self.movement, -90) + IsMoveInDirection(self.movement, +90); // if one is nonzero, other is always zero
1287                         if(sv_maxairstrafespeed)
1288                                 wishspeed = min(wishspeed, GeomLerp(sv_maxairspeed*maxspd_mod, strafity, sv_maxairstrafespeed*maxspd_mod));
1289                         if(sv_airstrafeaccelerate)
1290                                 airaccel = GeomLerp(airaccel, strafity, sv_airstrafeaccelerate*maxspd_mod);
1291                         if(self.stat_sv_airstrafeaccel_qw)
1292                                 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));
1293                         // !CPM
1294
1295                         if(sv_warsowbunny_turnaccel && accelerating && self.movement_y == 0 && self.movement_x != 0)
1296                                 PM_AirAccelerate(wishdir, wishspeed);
1297                         else
1298                                 PM_Accelerate(wishdir, wishspeed, wishspeed0, airaccel, airaccelqw, sv_airaccel_sideways_friction / maxairspd, self.stat_sv_airspeedlimit_nonqw);
1299
1300                         if(sv_aircontrol)
1301                                 CPM_PM_Aircontrol(wishdir, wishspeed2);
1302                 }
1303         }
1304
1305         if((g_cts || g_race) && self.classname != "observer") {
1306                 if(vlen(self.velocity - self.velocity_z * '0 0 1') > speedaward_speed) {
1307                         speedaward_speed = vlen(self.velocity - self.velocity_z * '0 0 1');
1308                         speedaward_holder = self.netname;
1309                         speedaward_lastupdate = time;
1310                 }
1311                 if(speedaward_speed > speedaward_lastsent && time - speedaward_lastupdate > 1) {
1312                         string rr;
1313                         if(g_cts)
1314                                 rr = CTS_RECORD;
1315                         else
1316                                 rr = RACE_RECORD;
1317                         race_send_speedaward(MSG_ALL);
1318                         speedaward_lastsent = speedaward_speed;
1319                         if (speedaward_speed > speedaward_alltimebest) {
1320                                 speedaward_alltimebest = speedaward_speed;
1321                                 speedaward_alltimebest_holder = speedaward_holder;
1322                                 db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/speed"), ftos(speedaward_alltimebest));
1323                                 db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/netname"), speedaward_alltimebest_holder);
1324                                 race_send_speedaward_alltimebest(MSG_ALL);
1325                         }
1326                 }
1327         }
1328
1329         float xyspeed;
1330         xyspeed = vlen('1 0 0' * self.velocity_x + '0 1 0' * self.velocity_y);
1331         if(self.weapon == WEP_NEX && cvar("g_balance_nex_charge") && cvar("g_balance_nex_charge_velocity_rate") && xyspeed > cvar("g_balance_nex_charge_minspeed"))
1332         {
1333                 // add a maximum of charge_velocity_rate when going fast (f = 1), gradually increasing from minspeed (f = 0) to maxspeed
1334                 xyspeed = min(xyspeed, cvar("g_balance_nex_charge_maxspeed"));
1335                 float f;
1336                 f = (xyspeed - cvar("g_balance_nex_charge_minspeed")) / (cvar("g_balance_nex_charge_maxspeed") - cvar("g_balance_nex_charge_minspeed"));
1337                 // add the extra charge
1338                 self.nex_charge += cvar("g_balance_nex_charge_velocity_rate") * f * frametime;
1339         }
1340 :end
1341         if(self.flags & FL_ONGROUND)
1342                 self.lastground = time;
1343
1344         self.lastflags = self.flags;
1345         self.lastclassname = self.classname;
1346 };