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 /*
  41 =============
  42 PlayerJump
  43
  44 When you press the jump key
  45 =============
  46 */
  47 void PlayerJump (void)
  48 {
  49         if(g_freezetag && self.freezetag_frozen)
  50                 return; // no jumping in freezetag when frozen
  51
  52         float mjumpheight;
  53         float doublejump;
  54
  55         doublejump = FALSE;
  56         if (sv_doublejump)
  57         {
  58                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
  59                 if (trace_fraction < 1 && trace_plane_normal_z > 0.7)
  60                         doublejump = TRUE;
  61         }
  62
  63         mjumpheight = cvar("sv_jumpvelocity");
  64         if (self.waterlevel >= WATERLEVEL_SWIMMING)
  65         {
  66                 if (self.watertype == CONTENT_WATER)
  67                         self.velocity_z = 200;
  68                 else if (self.watertype == CONTENT_SLIME)
  69                         self.velocity_z = 80;
  70                 else
  71                         self.velocity_z = 50;
  72
  73                 return;
  74         }
  75
  76         if (cvar("g_multijump"))
  77         {
  78                 if (self.prevjumpbutton == FALSE && !(self.flags & FL_ONGROUND)) // jump button pressed this frame and we are in midair
  79                         self.multijump_ready = TRUE;  // this is necessary to check that we released the jump button and pressed it again
  80                 else
  81                         self.multijump_ready = FALSE;
  82         }
  83
  84         if(!doublejump && self.multijump_ready && self.multijump_count < cvar("g_multijump") && self.velocity_z > cvar("g_multijump_speed"))
  85         {
  86                 // doublejump = FALSE; // checked above in the if
  87                 if (cvar("g_multijump") > 0)
  88                 {
  89                         if (cvar("g_multijump_add") == 0) // in this case we make the z velocity == jumpvelocity
  90                         {
  91                                 if (self.velocity_z < mjumpheight)
  92                                 {
  93                                         doublejump = TRUE;
  94                                         self.velocity_z = 0;
  95                                 }
  96                         }
  97                         else
  98                                 doublejump = TRUE;
  99
 100                         if(doublejump)
 101                         {
 102                                 if(self.movement_x != 0 || self.movement_y != 0) // don't remove all speed if player isnt pressing any movement keys
 103                                 {
 104                                         float curspeed;
 105                                         vector wishvel, wishdir;
 106
 107                                         curspeed = max(
 108                                                 vlen(vec2(self.velocity)), // current xy speed
 109                                                 vlen(vec2(antilag_takebackavgvelocity(self, max(self.lastteleporttime + sys_frametime, time - 0.25), time))) // average xy topspeed over the last 0.25 secs
 110                                         );
 111                                         makevectors(self.v_angle_y * '0 1 0');
 112                                         wishvel = v_forward * self.movement_x + v_right * self.movement_y;
 113                                         wishdir = normalize(wishvel);
 114
 115                                         self.velocity_x = wishdir_x * curspeed; // allow "dodging" at a multijump
 116                                         self.velocity_y = wishdir_y * curspeed;
 117                                         // keep velocity_z unchanged!
 118                                 }
 119                                 self.multijump_count += 1;
 120                         }
 121                 }
 122                 self.multijump_ready = FALSE; // require releasing and pressing the jump button again for the next jump
 123         }
 124
 125         if (!doublejump)
 126                 if (!(self.flags & FL_ONGROUND))
 127                         return;
 128
 129         if(!sv_pogostick)
 130                 if (!(self.flags & FL_JUMPRELEASED))
 131                         return;
 132
 133         if(self.health <= g_bloodloss)
 134                 return;
 135
 136         if(g_runematch)
 137         {
 138                 if(self.runes & RUNE_SPEED)
 139                 {
 140                         if(self.runes & CURSE_SLOW)
 141                                 mjumpheight = mjumpheight * cvar("g_balance_rune_speed_combo_jumpheight");
 142                         else
 143                                 mjumpheight = mjumpheight * cvar("g_balance_rune_speed_jumpheight");
 144                 }
 145                 else if(self.runes & CURSE_SLOW)
 146                 {
 147                         mjumpheight = mjumpheight * cvar("g_balance_curse_slow_jumpheight");
 148                 }
 149         }
 150
 151         if(g_minstagib && (self.items & IT_INVINCIBLE))
 152         {
 153                 mjumpheight = mjumpheight * cvar("g_minstagib_speed_jumpheight");
 154         }
 155
 156         // sv_jumpspeedcap_min/sv_jumpspeedcap_max act as baseline
 157         // velocity bounds.  Final velocity is bound between (jumpheight *
 158         // min + jumpheight) and (jumpheight * max + jumpheight);
 159
 160         if(cvar_string("sv_jumpspeedcap_min") != "")
 161         {
 162                 float minjumpspeed;
 163
 164                 minjumpspeed = mjumpheight * cvar("sv_jumpspeedcap_min");
 165
 166                 if (self.velocity_z < minjumpspeed)
 167                         mjumpheight += minjumpspeed - self.velocity_z;
 168         }
 169
 170         if(cvar_string("sv_jumpspeedcap_max") != "")
 171         {
 172                 // don't do jump speedcaps on ramps to preserve old xonotic ramjump style
 173                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
 174
 175                 if(!(trace_fraction < 1 && trace_plane_normal_z < 0.98 && cvar("sv_jumpspeedcap_max_disable_on_ramps")))
 176                 {
 177                         float maxjumpspeed;
 178
 179                         maxjumpspeed = mjumpheight * cvar("sv_jumpspeedcap_max");
 180
 181                         if (self.velocity_z > maxjumpspeed)
 182                                 mjumpheight -= self.velocity_z - maxjumpspeed;
 183                 }
 184         }
 185
 186         if(!(self.lastflags & FL_ONGROUND))
 187         {
 188                 if(cvar("speedmeter"))
 189                         dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
 190                 if(self.lastground < time - 0.3)
 191                 {
 192                         self.velocity_x *= (1 - cvar("sv_friction_on_land"));
 193                         self.velocity_y *= (1 - cvar("sv_friction_on_land"));
 194                 }
 195                 if(self.jumppadcount > 1)
 196                         dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
 197                 self.jumppadcount = 0;
 198         }
 199
 200         self.velocity_z = self.velocity_z + mjumpheight;
 201         self.oldvelocity_z = self.velocity_z;
 202
 203         self.flags &~= FL_ONGROUND;
 204         self.flags &~= FL_JUMPRELEASED;
 205
 206         if (self.crouch)
 207                 setanim(self, self.anim_duckjump, FALSE, TRUE, TRUE);
 208         else
 209                 setanim(self, self.anim_jump, FALSE, TRUE, TRUE);
 210
 211         if(g_jump_grunt)
 212                 PlayerSound(playersound_jump, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 213
 214         self.restart_jump = -1; // restart jump anim next time
 215         // value -1 is used to not use the teleport bit (workaround for tiny hitch when re-jumping)
 216 }
 217
 218 void CheckWaterJump()
 219 {
 220         local vector start, end;
 221
 222 // check for a jump-out-of-water
 223         makevectors (self.angles);
 224         start = self.origin;
 225         start_z = start_z + 8;
 226         v_forward_z = 0;
 227         normalize(v_forward);
 228         end = start + v_forward*24;
 229         traceline (start, end, TRUE, self);
 230         if (trace_fraction < 1)
 231         {       // solid at waist
 232                 start_z = start_z + self.maxs_z - 8;
 233                 end = start + v_forward*24;
 234                 self.movedir = trace_plane_normal * -50;
 235                 traceline (start, end, TRUE, self);
 236                 if (trace_fraction == 1)
 237                 {       // open at eye level
 238                         self.flags |= FL_WATERJUMP;
 239                         self.velocity_z = 225;
 240                         self.flags &~= FL_JUMPRELEASED;
 241                         self.teleport_time = time + 2;  // safety net
 242                         return;
 243                 }
 244         }
 245 };
 246
 247 float racecar_angle(float forward, float down)
 248 {
 249         float ret, angle_mult;
 250
 251         if(forward < 0)
 252         {
 253                 forward = -forward;
 254                 down = -down;
 255         }
 256
 257         ret = vectoyaw('0 1 0' * down + '1 0 0' * forward);
 258
 259         angle_mult = forward / (800 + forward);
 260
 261         if(ret > 180)
 262                 return ret * angle_mult + 360 * (1 - angle_mult);
 263         else
 264                 return ret * angle_mult;
 265 }
 266
 267 void RaceCarPhysics()
 268 {
 269         // using this move type for "big rigs"
 270         // the engine does not push the entity!
 271
 272         float accel, steer, f, myspeed, steerfactor;
 273         vector angles_save, rigvel;
 274
 275         angles_save = self.angles;
 276         accel = bound(-1, self.movement_x / sv_maxspeed, 1);
 277         steer = bound(-1, self.movement_y / sv_maxspeed, 1);
 278
 279         if(g_bugrigs_reverse_speeding)
 280         {
 281                 if(accel < 0)
 282                 {
 283                         // back accel is DIGITAL
 284                         // to prevent speedhack
 285                         if(accel < -0.5)
 286                                 accel = -1;
 287                         else
 288                                 accel = 0;
 289                 }
 290         }
 291
 292         self.angles_x = 0;
 293         self.angles_z = 0;
 294         makevectors(self.angles); // new forward direction!
 295
 296         if(self.flags & FL_ONGROUND || g_bugrigs_air_steering)
 297         {
 298                 float upspeed, accelfactor;
 299
 300                 myspeed = self.velocity * v_forward;
 301                 upspeed = self.velocity * v_up;
 302
 303                 // responsiveness factor for steering and acceleration
 304                 f = 1 / (1 + pow(max(-myspeed, myspeed) / g_bugrigs_speed_ref, g_bugrigs_speed_pow));
 305                 //MAXIMA: f(v) := 1 / (1 + (v / g_bugrigs_speed_ref) ^ g_bugrigs_speed_pow);
 306
 307                 if(myspeed < 0 && g_bugrigs_reverse_spinning)
 308                         steerfactor = -myspeed * g_bugrigs_steer;
 309                 else
 310                         steerfactor = -myspeed * f * g_bugrigs_steer;
 311
 312                 if(myspeed < 0 && g_bugrigs_reverse_speeding)
 313                         accelfactor = g_bugrigs_accel;
 314                 else
 315                         accelfactor = f * g_bugrigs_accel;
 316                 //MAXIMA: accel(v) := f(v) * g_bugrigs_accel;
 317
 318                 if(accel < 0)
 319                 {
 320                         if(myspeed > 0)
 321                         {
 322                                 myspeed = max(0, myspeed - frametime * (g_bugrigs_friction_floor - g_bugrigs_friction_brake * accel));
 323                         }
 324                         else
 325                         {
 326                                 if(!g_bugrigs_reverse_speeding)
 327                                         myspeed = min(0, myspeed + frametime * g_bugrigs_friction_floor);
 328                         }
 329                 }
 330                 else
 331                 {
 332                         if(myspeed >= 0)
 333                         {
 334                                 myspeed = max(0, myspeed - frametime * g_bugrigs_friction_floor);
 335                         }
 336                         else
 337                         {
 338                                 if(g_bugrigs_reverse_stopping)
 339                                         myspeed = 0;
 340                                 else
 341                                         myspeed = min(0, myspeed + frametime * (g_bugrigs_friction_floor + g_bugrigs_friction_brake * accel));
 342                         }
 343                 }
 344                 // terminal velocity = velocity at which 50 == accelfactor, that is, 1549 units/sec
 345                 //MAXIMA: friction(v) := g_bugrigs_friction_floor;
 346
 347                 self.angles_y += steer * frametime * steerfactor; // apply steering
 348                 makevectors(self.angles); // new forward direction!
 349
 350                 myspeed += accel * accelfactor * frametime;
 351
 352                 rigvel = myspeed * v_forward + '0 0 1' * upspeed;
 353         }
 354         else
 355         {
 356                 myspeed = vlen(self.velocity);
 357
 358                 // responsiveness factor for steering and acceleration
 359                 f = 1 / (1 + pow(max(0, myspeed / g_bugrigs_speed_ref), g_bugrigs_speed_pow));
 360                 steerfactor = -myspeed * f;
 361                 self.angles_y += steer * frametime * steerfactor; // apply steering
 362
 363                 rigvel = self.velocity;
 364                 makevectors(self.angles); // new forward direction!
 365         }
 366
 367         rigvel = rigvel * max(0, 1 - vlen(rigvel) * g_bugrigs_friction_air * frametime);
 368         //MAXIMA: airfriction(v) := v * v * g_bugrigs_friction_air;
 369         //MAXIMA: total_acceleration(v) := accel(v) - friction(v) - airfriction(v);
 370         //MAXIMA: solve(total_acceleration(v) = 0, v);
 371
 372         if(g_bugrigs_planar_movement)
 373         {
 374                 vector rigvel_xy, neworigin, up;
 375                 float mt;
 376
 377                 rigvel_z -= frametime * sv_gravity; // 4x gravity plays better
 378                 rigvel_xy = vec2(rigvel);
 379
 380                 if(g_bugrigs_planar_movement_car_jumping && !g_touchexplode) // touchexplode is a better way to handle collisions
 381                         mt = MOVE_NORMAL;
 382                 else
 383                         mt = MOVE_NOMONSTERS;
 384
 385                 tracebox(self.origin, self.mins, self.maxs, self.origin + '0 0 1024', mt, self);
 386                 up = trace_endpos - self.origin;
 387
 388                 // BUG RIGS: align the move to the surface instead of doing collision testing
 389                 // can we move?
 390                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos + rigvel_xy * frametime, mt, self);
 391
 392                 // align to surface
 393                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos - up + '0 0 1' * rigvel_z * frametime, mt, self);
 394
 395                 if(trace_fraction < 0.5)
 396                 {
 397                         trace_fraction = 1;
 398                         neworigin = self.origin;
 399                 }
 400                 else
 401                         neworigin = trace_endpos;
 402
 403                 if(trace_fraction < 1)
 404                 {
 405                         // now set angles_x so that the car points parallel to the surface
 406                         self.angles = vectoangles(
 407                                         '1 0 0' * v_forward_x * trace_plane_normal_z
 408                                         +
 409                                         '0 1 0' * v_forward_y * trace_plane_normal_z
 410                                         +
 411                                         '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y)
 412                                         );
 413                         self.flags |= FL_ONGROUND;
 414                 }
 415                 else
 416                 {
 417                         // now set angles_x so that the car points forward, but is tilted in velocity direction
 418                         self.flags &~= FL_ONGROUND;
 419                 }
 420
 421                 self.velocity = (neworigin - self.origin) * (1.0 / frametime);
 422                 self.movetype = MOVETYPE_NOCLIP;
 423         }
 424         else
 425         {
 426                 rigvel_z -= frametime * sv_gravity; // 4x gravity plays better
 427                 self.velocity = rigvel;
 428                 self.movetype = MOVETYPE_FLY;
 429         }
 430
 431         trace_fraction = 1;
 432         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 4', MOVE_NORMAL, self);
 433         if(trace_fraction != 1)
 434         {
 435                 self.angles = vectoangles2(
 436                                 '1 0 0' * v_forward_x * trace_plane_normal_z
 437                                 +
 438                                 '0 1 0' * v_forward_y * trace_plane_normal_z
 439                                 +
 440                                 '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y),
 441                                 trace_plane_normal
 442                                 );
 443         }
 444         else
 445         {
 446                 vector vel_local;
 447
 448                 vel_local_x = v_forward * self.velocity;
 449                 vel_local_y = v_right * self.velocity;
 450                 vel_local_z = v_up * self.velocity;
 451
 452                 self.angles_x = racecar_angle(vel_local_x, vel_local_z);
 453                 self.angles_z = racecar_angle(-vel_local_y, vel_local_z);
 454         }
 455
 456         // smooth the angles
 457         vector vf1, vu1, smoothangles;
 458         makevectors(self.angles);
 459         f = bound(0, frametime * g_bugrigs_angle_smoothing, 1);
 460         if(f == 0)
 461                 f = 1;
 462         vf1 = v_forward * f;
 463         vu1 = v_up * f;
 464         makevectors(angles_save);
 465         vf1 = vf1 + v_forward * (1 - f);
 466         vu1 = vu1 + v_up * (1 - f);
 467         smoothangles = vectoangles2(vf1, vu1);
 468         self.angles_x = -smoothangles_x;
 469         self.angles_z =  smoothangles_z;
 470 }
 471
 472 float IsMoveInDirection(vector mv, float angle) // key mix factor
 473 {
 474         if(mv_x == 0 && mv_y == 0)
 475                 return 0; // avoid division by zero
 476         angle -= RAD2DEG * atan2(mv_y, mv_x);
 477         angle = remainder(angle, 360) / 45;
 478         if(angle >  1)
 479                 return 0;
 480         if(angle < -1)
 481                 return 0;
 482         return 1 - fabs(angle);
 483 }
 484
 485 float GeomLerp(float a, float lerp, float b)
 486 {
 487         if(a == 0)
 488         {
 489                 if(lerp < 1)
 490                         return 0;
 491                 else
 492                         return b;
 493         }
 494         if(b == 0)
 495         {
 496                 if(lerp > 0)
 497                         return 0;
 498                 else
 499                         return a;
 500         }
 501         return a * pow(fabs(b / a), lerp);
 502 }
 503
 504 void CPM_PM_Aircontrol(vector wishdir, float wishspeed)
 505 {
 506         float zspeed, xyspeed, dot, k;
 507
 508 #if 0
 509         // this doesn't play well with analog input
 510         if(self.movement_x == 0 || self.movement_y != 0)
 511                 return; // can't control movement if not moving forward or backward
 512         k = 32;
 513 #else
 514         k = 32 * (2 * IsMoveInDirection(self.movement, 0) - 1);
 515         if(k <= 0)
 516                 return;
 517 #endif
 518
 519         k *= bound(0, wishspeed / sv_maxairspeed, 1);
 520
 521         zspeed = self.velocity_z;
 522         self.velocity_z = 0;
 523         xyspeed = vlen(self.velocity); self.velocity = normalize(self.velocity);
 524
 525         dot = self.velocity * wishdir;
 526
 527         if(dot > 0) // we can't change direction while slowing down
 528         {
 529                 k *= pow(dot, sv_aircontrol_power)*frametime;
 530                 xyspeed = max(0, xyspeed - sv_aircontrol_penalty * sqrt(max(0, 1 - dot*dot)) * k/32);
 531                 k *= sv_aircontrol;
 532                 self.velocity = normalize(self.velocity * xyspeed + wishdir * k);
 533         }
 534
 535         self.velocity = self.velocity * xyspeed;
 536         self.velocity_z = zspeed;
 537 }
 538
 539 float AdjustAirAccelQW(float accelqw, float factor)
 540 {
 541         return copysign(bound(0.000001, 1 - (1 - fabs(accelqw)) * factor, 1), accelqw);
 542 }
 543
 544 // example config for alternate speed clamping:
 545 //   sv_airaccel_qw 0.8
 546 //   sv_airaccel_sideways_friction 0
 547 //   prvm_globalset server speedclamp_mode 1
 548 //     (or 2)
 549 void PM_Accelerate(vector wishdir, float wishspeed, float wishspeed0, float accel, float accelqw, float sidefric, float speedlimit)
 550 {
 551         float vel_straight;
 552         float vel_z;
 553         vector vel_perpend;
 554         float step;
 555
 556         vector vel_xy;
 557         float vel_xy_current;
 558         float vel_xy_backward, vel_xy_forward;
 559         float speedclamp;
 560
 561         speedclamp = (accelqw < 0);
 562         if(speedclamp)
 563                 accelqw = -accelqw;
 564
 565         if(cvar("sv_gameplayfix_q2airaccelerate"))
 566                 wishspeed0 = wishspeed;
 567
 568         vel_straight = self.velocity * wishdir;
 569         vel_z = self.velocity_z;
 570         vel_xy = vec2(self.velocity);
 571         vel_perpend = vel_xy - vel_straight * wishdir;
 572
 573         step = accel * frametime * wishspeed0;
 574
 575         vel_xy_current  = vlen(vel_xy);
 576         if(speedlimit)
 577                 accelqw = AdjustAirAccelQW(accelqw, (speedlimit - bound(wishspeed, vel_xy_current, speedlimit)) / max(1, speedlimit - wishspeed));
 578         vel_xy_forward  = vel_xy_current + bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
 579         vel_xy_backward = vel_xy_current - bound(0, wishspeed + vel_xy_current, step) * accelqw - step * (1 - accelqw);
 580         if(vel_xy_backward < 0)
 581                 vel_xy_backward = 0; // not that it REALLY occurs that this would cause wrong behaviour afterwards
 582
 583         vel_straight = vel_straight + bound(0, wishspeed - vel_straight, step) * accelqw + step * (1 - accelqw);
 584
 585         if(sidefric < 0 && (vel_perpend*vel_perpend))
 586                 // negative: only apply so much sideways friction to stay below the speed you could get by "braking"
 587         {
 588                 float f, fminimum;
 589                 f = max(0, 1 + frametime * wishspeed * sidefric);
 590                 fminimum = (vel_xy_backward*vel_xy_backward - vel_straight*vel_straight) / (vel_perpend*vel_perpend);
 591                 // this cannot be > 1
 592                 if(fminimum <= 0)
 593                         vel_perpend = vel_perpend * max(0, f);
 594                 else
 595                 {
 596                         fminimum = sqrt(fminimum);
 597                         vel_perpend = vel_perpend * max(fminimum, f);
 598                 }
 599         }
 600         else
 601                 vel_perpend = vel_perpend * max(0, 1 - frametime * wishspeed * sidefric);
 602
 603         vel_xy = vel_straight * wishdir + vel_perpend;
 604
 605         if(speedclamp)
 606         {
 607                 // ensure we don't get too fast or decelerate faster than we should
 608                 vel_xy_current = min(vlen(vel_xy), vel_xy_forward);
 609                 if(vel_xy_current > 0) // prevent division by zero
 610                         vel_xy = normalize(vel_xy) * vel_xy_current;
 611         }
 612
 613         self.velocity = vel_xy + vel_z * '0 0 1';
 614 }
 615
 616 void PM_AirAccelerate(vector wishdir, float wishspeed)
 617 {
 618         vector curvel, wishvel, acceldir, curdir;
 619         float addspeed, accelspeed, curspeed, f;
 620         float dot;
 621
 622         if(wishspeed == 0)
 623                 return;
 624
 625         curvel = self.velocity;
 626         curvel_z = 0;
 627         curspeed = vlen(curvel);
 628
 629         if(wishspeed > curspeed * 1.01)
 630         {
 631                 wishspeed = min(wishspeed, curspeed + sv_warsowbunny_airforwardaccel * sv_maxspeed * frametime);
 632         }
 633         else
 634         {
 635                 f = max(0, (sv_warsowbunny_topspeed - curspeed) / (sv_warsowbunny_topspeed - sv_maxspeed));
 636                 wishspeed = max(curspeed, sv_maxspeed) + sv_warsowbunny_accel * f * sv_maxspeed * frametime;
 637         }
 638         wishvel = wishdir * wishspeed;
 639         acceldir = wishvel - curvel;
 640         addspeed = vlen(acceldir);
 641         acceldir = normalize(acceldir);
 642
 643         accelspeed = min(addspeed, sv_warsowbunny_turnaccel * sv_maxspeed * frametime);
 644
 645         if(sv_warsowbunny_backtosideratio < 1)
 646         {
 647                 curdir = normalize(curvel);
 648                 dot = acceldir * curdir;
 649                 if(dot < 0)
 650                         acceldir = acceldir - (1 - sv_warsowbunny_backtosideratio) * dot * curdir;
 651         }
 652
 653         self.velocity += accelspeed * acceldir;
 654 }
 655
 656 .vector movement_old;
 657 .float buttons_old;
 658 .vector v_angle_old;
 659 .string lastclassname;
 660
 661 .float() PlayerPhysplug;
 662
 663 string specialcommand = "xwxwxsxsxaxdxaxdx1x ";
 664 .float specialcommand_pos;
 665 void SpecialCommand()
 666 {
 667 #ifdef TETRIS
 668         TetrisImpulse();
 669 #else
 670         if(!CheatImpulse(99))
 671                 print("A hollow voice says \"Plugh\".\n");
 672 #endif
 673 }
 674
 675 float speedaward_speed;
 676 string speedaward_holder;
 677 string speedaward_uid;
 678 void race_send_speedaward(float msg)
 679 {
 680         // send the best speed of the round
 681         WriteByte(msg, SVC_TEMPENTITY);
 682         WriteByte(msg, TE_CSQC_RACE);
 683         WriteByte(msg, RACE_NET_SPEED_AWARD);
 684         WriteInt24_t(msg, floor(speedaward_speed+0.5));
 685         WriteString(msg, speedaward_holder);
 686 }
 687
 688 float speedaward_alltimebest;
 689 string speedaward_alltimebest_holder;
 690 string speedaward_alltimebest_uid;
 691 void race_send_speedaward_alltimebest(float msg)
 692 {
 693         // send the best speed
 694         WriteByte(msg, SVC_TEMPENTITY);
 695         WriteByte(msg, TE_CSQC_RACE);
 696         WriteByte(msg, RACE_NET_SPEED_AWARD_BEST);
 697         WriteInt24_t(msg, floor(speedaward_alltimebest+0.5));
 698         WriteString(msg, speedaward_alltimebest_holder);
 699 }
 700
 701 string GetMapname(void);
 702 float speedaward_lastupdate;
 703 float speedaward_lastsent;
 704 void SV_PlayerPhysics()
 705 {
 706         local vector wishvel, wishdir, v;
 707         local float wishspeed, f, maxspd_mod, spd, maxairspd, airaccel, swampspd_mod, buttons;
 708         string temps;
 709         float buttons_prev;
 710         float not_allowed_to_move;
 711         string c;
 712
 713         // fix physics stats for g_movement_highspeed
 714         self.stat_sv_airaccel_qw = AdjustAirAccelQW(sv_airaccel_qw, autocvar_g_movement_highspeed);
 715         if(sv_airstrafeaccel_qw)
 716                 self.stat_sv_airstrafeaccel_qw = AdjustAirAccelQW(sv_airstrafeaccel_qw, autocvar_g_movement_highspeed);
 717         else
 718                 self.stat_sv_airstrafeaccel_qw = 0;
 719         self.stat_sv_airspeedlimit_nonqw = sv_airspeedlimit_nonqw * autocvar_g_movement_highspeed;
 720
 721     if(self.PlayerPhysplug)
 722         if(self.PlayerPhysplug())
 723             return;
 724
 725         self.race_movetime_frac += frametime;
 726         f = floor(self.race_movetime_frac);
 727         self.race_movetime_frac -= f;
 728         self.race_movetime_count += f;
 729         self.race_movetime = self.race_movetime_frac + self.race_movetime_count;
 730
 731         anticheat_physics();
 732
 733         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);
 734
 735         if(!buttons)
 736                 c = "x";
 737         else if(buttons == 1)
 738                 c = "1";
 739         else if(buttons == 2)
 740                 c = " ";
 741         else if(buttons == 128)
 742                 c = "s";
 743         else if(buttons == 256)
 744                 c = "w";
 745         else if(buttons == 512)
 746                 c = "a";
 747         else if(buttons == 1024)
 748                 c = "d";
 749         else
 750                 c = "?";
 751
 752         if(c == substring(specialcommand, self.specialcommand_pos, 1))
 753         {
 754                 self.specialcommand_pos += 1;
 755                 if(self.specialcommand_pos >= strlen(specialcommand))
 756                 {
 757                         self.specialcommand_pos = 0;
 758                         SpecialCommand();
 759                         return;
 760                 }
 761         }
 762         else if(self.specialcommand_pos && (c != substring(specialcommand, self.specialcommand_pos - 1, 1)))
 763                 self.specialcommand_pos = 0;
 764
 765         if(!sv_maxidle_spectatorsareidle || self.movetype == MOVETYPE_WALK)
 766         {
 767                 if(buttons != self.buttons_old || self.movement != self.movement_old || self.v_angle != self.v_angle_old)
 768                         self.parm_idlesince = time;
 769         }
 770         buttons_prev = self.buttons_old;
 771         self.buttons_old = buttons;
 772         self.movement_old = self.movement;
 773         self.v_angle_old = self.v_angle;
 774
 775         if(time < self.nickspamtime)
 776         if(self.nickspamcount >= cvar("g_nick_flood_penalty_yellow"))
 777         {
 778                 // slight annoyance for nick change scripts
 779                 self.movement = -1 * self.movement;
 780                 self.BUTTON_ATCK = self.BUTTON_JUMP = self.BUTTON_ATCK2 = self.BUTTON_ZOOM = self.BUTTON_CROUCH = self.BUTTON_HOOK = self.BUTTON_USE = 0;
 781
 782                 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!
 783                 {
 784                         self.angles_x = random() * 360;
 785                         self.angles_y = random() * 360;
 786                         // at least I'm not forcing retardedview by also assigning to angles_z
 787                         self.fixangle = 1;
 788                 }
 789         }
 790
 791         if (self.punchangle != '0 0 0')
 792         {
 793                 f = vlen(self.punchangle) - 10 * frametime;
 794                 if (f > 0)
 795                         self.punchangle = normalize(self.punchangle) * f;
 796                 else
 797                         self.punchangle = '0 0 0';
 798         }
 799
 800         if (self.punchvector != '0 0 0')
 801         {
 802                 f = vlen(self.punchvector) - 30 * frametime;
 803                 if (f > 0)
 804                         self.punchvector = normalize(self.punchvector) * f;
 805                 else
 806                         self.punchvector = '0 0 0';
 807         }
 808
 809         if (clienttype(self) == CLIENTTYPE_BOT)
 810         {
 811                 if(playerdemo_read())
 812                         return;
 813                 bot_think();
 814         }
 815
 816         MUTATOR_CALLHOOK(PlayerPhysics);
 817
 818         self.items &~= IT_USING_JETPACK;
 819
 820         if(self.classname == "player")
 821         {
 822                 if(self.race_penalty)
 823                         if(time > self.race_penalty)
 824                                 self.race_penalty = 0;
 825
 826                 not_allowed_to_move = 0;
 827                 if(self.race_penalty)
 828                         not_allowed_to_move = 1;
 829                 if(!cvar("sv_ready_restart_after_countdown"))
 830                 if(time < game_starttime)
 831                         not_allowed_to_move = 1;
 832
 833                 if(not_allowed_to_move)
 834                 {
 835                         self.velocity = '0 0 0';
 836                         self.movetype = MOVETYPE_NONE;
 837                         self.disableclientprediction = 2;
 838                 }
 839                 else if(self.disableclientprediction == 2)
 840                 {
 841                         if(self.movetype == MOVETYPE_NONE)
 842                                 self.movetype = MOVETYPE_WALK;
 843                         self.disableclientprediction = 0;
 844                 }
 845         }
 846
 847         if (self.movetype == MOVETYPE_NONE)
 848                 return;
 849
 850         maxspd_mod = 1;
 851
 852         if(g_runematch)
 853         {
 854                 if(self.runes & RUNE_SPEED)
 855                 {
 856                         if(self.runes & CURSE_SLOW)
 857                                 maxspd_mod = maxspd_mod * cvar("g_balance_rune_speed_combo_moverate");
 858                         else
 859                                 maxspd_mod = maxspd_mod * cvar("g_balance_rune_speed_moverate");
 860                 }
 861                 else if(self.runes & CURSE_SLOW)
 862                 {
 863                         maxspd_mod = maxspd_mod * cvar("g_balance_curse_slow_moverate");
 864                 }
 865         }
 866
 867         if(g_minstagib && (self.items & IT_INVINCIBLE))
 868         {
 869                 maxspd_mod = cvar("g_minstagib_speed_moverate");
 870         }
 871
 872         if(g_nexball && self.ballcarried)
 873         {
 874                 maxspd_mod = cvar("g_nexball_basketball_carrier_speed");
 875         }
 876
 877         swampspd_mod = 1;
 878         if(self.in_swamp) {
 879                 swampspd_mod = self.swamp_slowdown; //cvar("g_balance_swamp_moverate");
 880         }
 881
 882         if(self.classname != "player")
 883         {
 884                 maxspd_mod = cvar("sv_spectator_speed_multiplier");
 885                 if(!self.spectatorspeed)
 886                         self.spectatorspeed = maxspd_mod;
 887                 if(self.impulse && self.impulse <= 19)
 888                 {
 889                         if(self.lastclassname != "player")
 890                         {
 891                                 if(self.impulse == 10 || self.impulse == 15 || self.impulse == 18)
 892                                         self.spectatorspeed = bound(1, self.spectatorspeed + 0.5, 5);
 893                                 else if(self.impulse == 11)
 894                                         self.spectatorspeed = maxspd_mod;
 895                                 else if(self.impulse == 12 || self.impulse == 16  || self.impulse == 19)
 896                                         self.spectatorspeed = bound(1, self.spectatorspeed - 0.5, 5);
 897                                 else if(self.impulse >= 1 && self.impulse <= 9)
 898                                         self.spectatorspeed = 1 + 0.5 * (self.impulse - 1);
 899                         } // otherwise just clear
 900                         self.impulse = 0;
 901                 }
 902                 maxspd_mod = self.spectatorspeed;
 903         }
 904
 905         spd = max(sv_maxspeed, sv_maxairspeed) * maxspd_mod * swampspd_mod;
 906         if(self.speed != spd)
 907         {
 908                 self.speed = spd;
 909                 temps = ftos(spd);
 910                 stuffcmd(self, strcat("cl_forwardspeed ", temps, "\n"));
 911                 stuffcmd(self, strcat("cl_backspeed ", temps, "\n"));
 912                 stuffcmd(self, strcat("cl_sidespeed ", temps, "\n"));
 913                 stuffcmd(self, strcat("cl_upspeed ", temps, "\n"));
 914         }
 915
 916         maxspd_mod *= swampspd_mod; // only one common speed modder please!
 917         swampspd_mod = 1;
 918
 919         // if dead, behave differently
 920         if (self.deadflag)
 921                 goto end;
 922
 923         if (!self.fixangle && !g_bugrigs)
 924         {
 925                 self.angles_x = 0;
 926                 self.angles_y = self.v_angle_y;
 927                 self.angles_z = 0;
 928         }
 929
 930         if(self.flags & FL_ONGROUND)
 931         if(self.wasFlying)
 932         {
 933                 self.wasFlying = 0;
 934
 935                 if(self.waterlevel < WATERLEVEL_SWIMMING)
 936                 if(time >= self.ladder_time)
 937                 if not(self.hook)
 938                 {
 939                         self.nextstep = time + 0.3 + random() * 0.1;
 940                         trace_dphitq3surfaceflags = 0;
 941                         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 1', MOVE_NOMONSTERS, self);
 942                         if not(trace_dphitq3surfaceflags & Q3SURFACEFLAG_NOSTEPS)
 943                         {
 944                                 if(trace_dphitq3surfaceflags & Q3SURFACEFLAG_METALSTEPS)
 945                                         GlobalSound(globalsound_metalfall, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 946                                 else
 947                                         GlobalSound(globalsound_fall, CHAN_PLAYER, VOICETYPE_PLAYERSOUND);
 948                         }
 949                 }
 950         }
 951
 952         if(IsFlying(self))
 953                 self.wasFlying = 1;
 954
 955         if(self.classname == "player")
 956         {
 957                 if(self.flags & FL_ONGROUND)
 958                 {
 959                         if (cvar("g_multijump") > 0)
 960                                 self.multijump_count = 0;
 961                         else
 962                                 self.multijump_count = -2; // the cvar value for infinite jumps is -1, so this needs to be smaller
 963                 }
 964
 965                 if (self.BUTTON_JUMP)
 966                         PlayerJump ();
 967                 else
 968                         self.flags |= FL_JUMPRELEASED;
 969
 970                 if (self.waterlevel == WATERLEVEL_SWIMMING)
 971                         CheckWaterJump ();
 972                 self.prevjumpbutton = self.BUTTON_JUMP;
 973         }
 974
 975         if (self.flags & FL_WATERJUMP )
 976         {
 977                 self.velocity_x = self.movedir_x;
 978                 self.velocity_y = self.movedir_y;
 979                 if (time > self.teleport_time || self.waterlevel == WATERLEVEL_NONE)
 980                 {
 981                         self.flags &~= FL_WATERJUMP;
 982                         self.teleport_time = 0;
 983                 }
 984         }
 985         else if (g_bugrigs && self.classname == "player")
 986         {
 987                 RaceCarPhysics();
 988         }
 989         else if (self.movetype == MOVETYPE_NOCLIP || self.movetype == MOVETYPE_FLY)
 990         {
 991                 // noclipping or flying
 992                 self.flags &~= FL_ONGROUND;
 993
 994                 self.velocity = self.velocity * (1 - frametime * sv_friction);
 995                 makevectors(self.v_angle);
 996                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
 997                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
 998                 // acceleration
 999                 wishdir = normalize(wishvel);
1000                 wishspeed = vlen(wishvel);
1001                 if (wishspeed > sv_maxspeed*maxspd_mod)
1002                         wishspeed = sv_maxspeed*maxspd_mod;
1003                 if (time >= self.teleport_time)
1004                         PM_Accelerate(wishdir, wishspeed, wishspeed, sv_accelerate*maxspd_mod, 1, 0, 0);
1005         }
1006         else if (self.waterlevel >= WATERLEVEL_SWIMMING)
1007         {
1008                 // swimming
1009                 self.flags &~= FL_ONGROUND;
1010
1011                 makevectors(self.v_angle);
1012                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
1013                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
1014                 if (wishvel == '0 0 0')
1015                         wishvel = '0 0 -60'; // drift towards bottom
1016
1017                 wishdir = normalize(wishvel);
1018                 wishspeed = vlen(wishvel);
1019                 if (wishspeed > sv_maxspeed*maxspd_mod)
1020                         wishspeed = sv_maxspeed*maxspd_mod;
1021                 wishspeed = wishspeed * 0.7;
1022
1023                 // water friction
1024                 self.velocity = self.velocity * (1 - frametime * sv_friction);
1025
1026                 // water acceleration
1027                 PM_Accelerate(wishdir, wishspeed, wishspeed, sv_accelerate*maxspd_mod, 1, 0, 0);
1028         }
1029         else if (time < self.ladder_time)
1030         {
1031                 // on a spawnfunc_func_ladder or swimming in spawnfunc_func_water
1032                 self.flags &~= FL_ONGROUND;
1033
1034                 self.velocity = self.velocity * (1 - frametime * sv_friction);
1035                 makevectors(self.v_angle);
1036                 //wishvel = v_forward * self.movement_x + v_right * self.movement_y + v_up * self.movement_z;
1037                 wishvel = v_forward * self.movement_x + v_right * self.movement_y + '0 0 1' * self.movement_z;
1038                 if (self.gravity)
1039                         self.velocity_z = self.velocity_z + self.gravity * sv_gravity * frametime;
1040                 else
1041                         self.velocity_z = self.velocity_z + sv_gravity * frametime;
1042                 if (self.ladder_entity.classname == "func_water")
1043                 {
1044                         f = vlen(wishvel);
1045                         if (f > self.ladder_entity.speed)
1046                                 wishvel = wishvel * (self.ladder_entity.speed / f);
1047
1048                         self.watertype = self.ladder_entity.skin;
1049                         f = self.ladder_entity.origin_z + self.ladder_entity.maxs_z;
1050                         if ((self.origin_z + self.view_ofs_z) < f)
1051                                 self.waterlevel = WATERLEVEL_SUBMERGED;
1052                         else if ((self.origin_z + (self.mins_z + self.maxs_z) * 0.5) < f)
1053                                 self.waterlevel = WATERLEVEL_SWIMMING;
1054                         else if ((self.origin_z + self.mins_z + 1) < f)
1055                                 self.waterlevel = WATERLEVEL_WETFEET;
1056                         else
1057                         {
1058                                 self.waterlevel = WATERLEVEL_NONE;
1059                                 self.watertype = CONTENT_EMPTY;
1060                         }
1061                 }
1062                 // acceleration
1063                 wishdir = normalize(wishvel);
1064                 wishspeed = vlen(wishvel);
1065                 if (wishspeed > sv_maxspeed*maxspd_mod)
1066                         wishspeed = sv_maxspeed*maxspd_mod;
1067                 if (time >= self.teleport_time)
1068                 {
1069                         // water acceleration
1070                         PM_Accelerate(wishdir, wishspeed, wishspeed, sv_accelerate*maxspd_mod, 1, 0, 0);
1071                 }
1072         }
1073         else if ((self.items & IT_JETPACK) && self.BUTTON_HOOK && (!cvar("g_jetpack_fuel") || self.ammo_fuel >= 0.01 || self.items & IT_UNLIMITED_WEAPON_AMMO))
1074         {
1075                 //makevectors(self.v_angle_y * '0 1 0');
1076                 makevectors(self.v_angle);
1077                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1078                 // add remaining speed as Z component
1079                 maxairspd = sv_maxairspeed*max(1, maxspd_mod);
1080                 // fix speedhacks :P
1081                 wishvel = normalize(wishvel) * min(vlen(wishvel) / maxairspd, 1);
1082                 // add the unused velocity as up component
1083                 wishvel_z = 0;
1084
1085                 // if(self.BUTTON_JUMP)
1086                         wishvel_z = sqrt(max(0, 1 - wishvel * wishvel));
1087
1088                 // it is now normalized, so...
1089                 float a_side, a_up, a_add, a_diff;
1090                 a_side = cvar("g_jetpack_acceleration_side");
1091                 a_up = cvar("g_jetpack_acceleration_up");
1092                 a_add = cvar("g_jetpack_antigravity") * sv_gravity;
1093
1094                 wishvel_x *= a_side;
1095                 wishvel_y *= a_side;
1096                 wishvel_z *= a_up;
1097                 wishvel_z += a_add;
1098
1099                 float best;
1100                 best = 0;
1101                 //////////////////////////////////////////////////////////////////////////////////////
1102                 // finding the maximum over all vectors of above form
1103                 // with wishvel having an absolute value of 1
1104                 //////////////////////////////////////////////////////////////////////////////////////
1105                 // we're finding the maximum over
1106                 //   f(a_side, a_up, a_add, z) := a_side * (1 - z^2) + (a_add + a_up * z)^2;
1107                 // for z in the range from -1 to 1
1108                 //////////////////////////////////////////////////////////////////////////////////////
1109                 // maximum is EITHER attained at the single extreme point:
1110                 a_diff = a_side * a_side - a_up * a_up;
1111                 if(a_diff != 0)
1112                 {
1113                         f = a_add * a_up / a_diff; // this is the zero of diff(f(a_side, a_up, a_add, z), z)
1114                         if(f > -1 && f < 1) // can it be attained?
1115                         {
1116                                 best = (a_diff + a_add * a_add) * (a_diff + a_up * a_up) / a_diff;
1117                                 //print("middle\n");
1118                         }
1119                 }
1120                 // OR attained at z = 1:
1121                 f = (a_up + a_add) * (a_up + a_add);
1122                 if(f > best)
1123                 {
1124                         best = f;
1125                         //print("top\n");
1126                 }
1127                 // OR attained at z = -1:
1128                 f = (a_up - a_add) * (a_up - a_add);
1129                 if(f > best)
1130                 {
1131                         best = f;
1132                         //print("bottom\n");
1133                 }
1134                 best = sqrt(best);
1135                 //////////////////////////////////////////////////////////////////////////////////////
1136
1137                 //print("best possible acceleration: ", ftos(best), "\n");
1138
1139                 float fxy, fz;
1140                 fxy = bound(0, 1 - (self.velocity * normalize(wishvel_x * '1 0 0' + wishvel_y * '0 1 0')) / cvar("g_jetpack_maxspeed_side"), 1);
1141                 if(wishvel_z - sv_gravity > 0)
1142                         fz = bound(0, 1 - self.velocity_z / cvar("g_jetpack_maxspeed_up"), 1);
1143                 else
1144                         fz = bound(0, 1 + self.velocity_z / cvar("g_jetpack_maxspeed_up"), 1);
1145
1146                 float fvel;
1147                 fvel = vlen(wishvel);
1148                 wishvel_x *= fxy;
1149                 wishvel_y *= fxy;
1150                 wishvel_z = (wishvel_z - sv_gravity) * fz + sv_gravity;
1151
1152                 fvel = min(1, vlen(wishvel) / best);
1153                 if(cvar("g_jetpack_fuel") && !(self.items & IT_UNLIMITED_WEAPON_AMMO))
1154                         f = min(1, self.ammo_fuel / (cvar("g_jetpack_fuel") * frametime * fvel));
1155                 else
1156                         f = 1;
1157
1158                 //print("this acceleration: ", ftos(vlen(wishvel) * f), "\n");
1159
1160                 if (f > 0 && wishvel != '0 0 0')
1161                 {
1162                         self.velocity = self.velocity + wishvel * f * frametime;
1163                         if not(self.items & IT_UNLIMITED_WEAPON_AMMO)
1164                                 self.ammo_fuel -= cvar("g_jetpack_fuel") * frametime * fvel * f;
1165                         self.flags &~= FL_ONGROUND;
1166                         self.items |= IT_USING_JETPACK;
1167
1168                         // jetpack also inhibits health regeneration, but only for 1 second
1169                         self.pauseregen_finished = max(self.pauseregen_finished, time + cvar("g_balance_pause_fuel_regen"));
1170                 }
1171         }
1172         else if (self.flags & FL_ONGROUND)
1173         {
1174                 // we get here if we ran out of ammo
1175                 if((self.items & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32))
1176                         sprint(self, "You don't have any fuel for the ^2Jetpack\n");
1177
1178                 // walking
1179                 makevectors(self.v_angle_y * '0 1 0');
1180                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1181
1182                 if(!(self.lastflags & FL_ONGROUND))
1183                 {
1184                         if(cvar("speedmeter"))
1185                                 dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
1186                         if(self.lastground < time - 0.3)
1187                                 self.velocity = self.velocity * (1 - cvar("sv_friction_on_land"));
1188                         if(self.jumppadcount > 1)
1189                                 dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
1190                         self.jumppadcount = 0;
1191                 }
1192
1193 #ifdef LETS_TEST_FTEQCC
1194                 if(self.velocity_x || self.velocity_y)
1195                 {
1196                         // good
1197                 }
1198                 else
1199                 {
1200                         if(self.velocity_x)
1201                                 checkclient();
1202                         if(self.velocity_y)
1203                                 checkclient();
1204                 }
1205 #endif
1206
1207                 v = self.velocity;
1208                 v_z = 0;
1209                 f = vlen(v);
1210                 if(f > 0)
1211                 {
1212                         if (f < sv_stopspeed)
1213                                 f = 1 - frametime * (sv_stopspeed / f) * sv_friction;
1214                         else
1215                                 f = 1 - frametime * sv_friction;
1216                         if (f > 0)
1217                                 self.velocity = self.velocity * f;
1218                         else
1219                                 self.velocity = '0 0 0';
1220                 }
1221
1222                 // acceleration
1223                 wishdir = normalize(wishvel);
1224                 wishspeed = vlen(wishvel);
1225                 if (wishspeed > sv_maxspeed*maxspd_mod)
1226                         wishspeed = sv_maxspeed*maxspd_mod;
1227                 if (self.crouch)
1228                         wishspeed = wishspeed * 0.5;
1229                 if (time >= self.teleport_time)
1230                         PM_Accelerate(wishdir, wishspeed, wishspeed, sv_accelerate*maxspd_mod, 1, 0, 0);
1231         }
1232         else
1233         {
1234                 float wishspeed0;
1235                 // we get here if we ran out of ammo
1236                 if((self.items & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32))
1237                         sprint(self, "You don't have any fuel for the ^2Jetpack\n");
1238
1239                 if(maxspd_mod < 1)
1240                 {
1241                         maxairspd = sv_maxairspeed*maxspd_mod;
1242                         airaccel = sv_airaccelerate*maxspd_mod;
1243                 }
1244                 else
1245                 {
1246                         maxairspd = sv_maxairspeed;
1247                         airaccel = sv_airaccelerate;
1248                 }
1249                 // airborn
1250                 makevectors(self.v_angle_y * '0 1 0');
1251                 wishvel = v_forward * self.movement_x + v_right * self.movement_y;
1252                 // acceleration
1253                 wishdir = normalize(wishvel);
1254                 wishspeed = wishspeed0 = vlen(wishvel);
1255                 if (wishspeed0 > sv_maxspeed*maxspd_mod)
1256                         wishspeed0 = sv_maxspeed*maxspd_mod;
1257                 if (wishspeed > maxairspd)
1258                         wishspeed = maxairspd;
1259                 if (self.crouch)
1260                         wishspeed = wishspeed * 0.5;
1261                 if (time >= self.teleport_time)
1262                 {
1263                         float accelerating;
1264                         float wishspeed2;
1265                         float airaccelqw;
1266                         float strafity;
1267
1268                         airaccelqw = self.stat_sv_airaccel_qw;
1269                         accelerating = (self.velocity * wishdir > 0);
1270                         wishspeed2 = wishspeed;
1271
1272                         // CPM
1273                         if(sv_airstopaccelerate)
1274                         {
1275                                 vector curdir;
1276                                 curdir = self.velocity;
1277                                 curdir_z = 0;
1278                                 curdir = normalize(curdir);
1279                                 airaccel = airaccel + (sv_airstopaccelerate*maxspd_mod - airaccel) * max(0, -(curdir * wishdir));
1280                         }
1281                         // note that for straight forward jumping:
1282                         // step = accel * frametime * wishspeed0;
1283                         // accel  = bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
1284                         // -->
1285                         // dv/dt = accel * maxspeed (when slow)
1286                         // dv/dt = accel * maxspeed * (1 - accelqw) (when fast)
1287                         // log dv/dt = logaccel + logmaxspeed (when slow)
1288                         // log dv/dt = logaccel + logmaxspeed + log(1 - accelqw) (when fast)
1289                         strafity = IsMoveInDirection(self.movement, -90) + IsMoveInDirection(self.movement, +90); // if one is nonzero, other is always zero
1290                         if(sv_maxairstrafespeed)
1291                                 wishspeed = min(wishspeed, GeomLerp(sv_maxairspeed*maxspd_mod, strafity, sv_maxairstrafespeed*maxspd_mod));
1292                         if(sv_airstrafeaccelerate)
1293                                 airaccel = GeomLerp(airaccel, strafity, sv_airstrafeaccelerate*maxspd_mod);
1294                         if(self.stat_sv_airstrafeaccel_qw)
1295                                 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));
1296                         // !CPM
1297
1298                         if(sv_warsowbunny_turnaccel && accelerating && self.movement_y == 0 && self.movement_x != 0)
1299                                 PM_AirAccelerate(wishdir, wishspeed);
1300                         else
1301                                 PM_Accelerate(wishdir, wishspeed, wishspeed0, airaccel, airaccelqw, sv_airaccel_sideways_friction / maxairspd, self.stat_sv_airspeedlimit_nonqw);
1302
1303                         if(sv_aircontrol)
1304                                 CPM_PM_Aircontrol(wishdir, wishspeed2);
1305                 }
1306         }
1307
1308         if((g_cts || g_race) && self.classname != "observer") {
1309                 if(vlen(self.velocity - self.velocity_z * '0 0 1') > speedaward_speed) {
1310                         speedaward_speed = vlen(self.velocity - self.velocity_z * '0 0 1');
1311                         speedaward_holder = self.netname;
1312                         speedaward_uid = self.crypto_idfp;
1313                         speedaward_lastupdate = time;
1314                 }
1315                 if(speedaward_speed > speedaward_lastsent && time - speedaward_lastupdate > 1) {
1316                         string rr;
1317                         if(g_cts)
1318                                 rr = CTS_RECORD;
1319                         else
1320                                 rr = RACE_RECORD;
1321                         race_send_speedaward(MSG_ALL);
1322                         speedaward_lastsent = speedaward_speed;
1323                         if (speedaward_speed > speedaward_alltimebest) {
1324                                 speedaward_alltimebest = speedaward_speed;
1325                                 speedaward_alltimebest_holder = speedaward_holder;
1326                                 speedaward_alltimebest_uid = speedaward_uid;
1327                                 db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/speed"), ftos(speedaward_alltimebest));
1328                                 db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/crypto_idfp"), speedaward_alltimebest_uid);
1329                                 race_send_speedaward_alltimebest(MSG_ALL);
1330                         }
1331                 }
1332         }
1333
1334         float xyspeed;
1335         xyspeed = vlen('1 0 0' * self.velocity_x + '0 1 0' * self.velocity_y);
1336         if(self.weapon == WEP_NEX && cvar("g_balance_nex_charge") && cvar("g_balance_nex_charge_velocity_rate") && xyspeed > cvar("g_balance_nex_charge_minspeed"))
1337         {
1338                 // add a maximum of charge_velocity_rate when going fast (f = 1), gradually increasing from minspeed (f = 0) to maxspeed
1339                 xyspeed = min(xyspeed, cvar("g_balance_nex_charge_maxspeed"));
1340                 f = (xyspeed - cvar("g_balance_nex_charge_minspeed")) / (cvar("g_balance_nex_charge_maxspeed") - cvar("g_balance_nex_charge_minspeed"));
1341                 // add the extra charge
1342                 self.nex_charge = min(1, self.nex_charge + cvar("g_balance_nex_charge_velocity_rate") * f * frametime);
1343         }
1344 :end
1345         if(self.flags & FL_ONGROUND)
1346                 self.lastground = time;
1347
1348         self.lastflags = self.flags;
1349         self.lastclassname = self.classname;
1350 };