qcsrc/common/physics.qc

   1 .float race_penalty;
   2 .float restart_jump;
   3
   4 .float gravity;
   5 .float swamp_slowdown;
   6 .float lastflags;
   7 .float lastground;
   8 .float wasFlying;
   9 .float spectatorspeed;
  10
  11 .vector movement_old;
  12 .float buttons_old;
  13 .vector v_angle_old;
  14 .string lastclassname;
  15
  16 .float() PlayerPhysplug;
  17 float AdjustAirAccelQW(float accelqw, float factor);
  18
  19 #ifdef CSQC
  20
  21 .float watertype;
  22
  23 #elif defined(SVQC)
  24 .float stat_sv_airaccel_qw;
  25 .float stat_sv_airstrafeaccel_qw;
  26 .float stat_sv_airspeedlimit_nonqw;
  27 .float stat_sv_maxspeed;
  28 .float stat_movement_highspeed;
  29
  30 .float stat_jetpack_accel_side;
  31 .float stat_jetpack_accel_up;
  32 .float stat_jetpack_antigravity;
  33 .float stat_jetpack_fuel;
  34 .float stat_jetpack_maxspeed_up;
  35 .float stat_jetpack_maxspeed_side;
  36
  37 void Physics_AddStats()
  38 {
  39         // g_movementspeed hack
  40         addstat(STAT_MOVEVARS_AIRSPEEDLIMIT_NONQW, AS_FLOAT, stat_sv_airspeedlimit_nonqw);
  41         addstat(STAT_MOVEVARS_MAXSPEED, AS_FLOAT, stat_sv_maxspeed);
  42         addstat(STAT_MOVEVARS_AIRACCEL_QW, AS_FLOAT, stat_sv_airaccel_qw);
  43         addstat(STAT_MOVEVARS_AIRSTRAFEACCEL_QW, AS_FLOAT, stat_sv_airstrafeaccel_qw);
  44         addstat(STAT_MOVEVARS_HIGHSPEED, AS_FLOAT, stat_movement_highspeed);
  45
  46         // jet pack
  47         addstat(STAT_JETPACK_ACCEL_SIDE, AS_FLOAT, stat_jetpack_accel_side);
  48         addstat(STAT_JETPACK_ACCEL_UP, AS_FLOAT, stat_jetpack_accel_up);
  49         addstat(STAT_JETPACK_ANTIGRAVITY, AS_FLOAT, stat_jetpack_antigravity);
  50         addstat(STAT_JETPACK_FUEL, AS_FLOAT, stat_jetpack_fuel);
  51         addstat(STAT_JETPACK_MAXSPEED_UP, AS_FLOAT, stat_jetpack_maxspeed_up);
  52         addstat(STAT_JETPACK_MAXSPEED_SIDE, AS_FLOAT, stat_jetpack_maxspeed_side);
  53 }
  54
  55 void Physics_UpdateStats(float maxspd_mod)
  56 {
  57         self.stat_sv_airaccel_qw = AdjustAirAccelQW(autocvar_sv_airaccel_qw, maxspd_mod);
  58         if (autocvar_sv_airstrafeaccel_qw)
  59                 self.stat_sv_airstrafeaccel_qw = AdjustAirAccelQW(autocvar_sv_airstrafeaccel_qw, maxspd_mod);
  60         else
  61                 self.stat_sv_airstrafeaccel_qw = 0;
  62         self.stat_sv_airspeedlimit_nonqw = autocvar_sv_airspeedlimit_nonqw * maxspd_mod;
  63         self.stat_sv_maxspeed = autocvar_sv_maxspeed * maxspd_mod; // also slow walking
  64         self.stat_movement_highspeed = PHYS_HIGHSPEED; // TODO: remove this!
  65
  66         self.stat_jetpack_antigravity = PHYS_JETPACK_ANTIGRAVITY;
  67         self.stat_jetpack_accel_up = PHYS_JETPACK_ACCEL_UP;
  68         self.stat_jetpack_accel_side = PHYS_JETPACK_ACCEL_SIDE;
  69         self.stat_jetpack_maxspeed_side = PHYS_JETPACK_MAXSPEED_SIDE;
  70         self.stat_jetpack_maxspeed_up = PHYS_JETPACK_MAXSPEED_UP;
  71         self.stat_jetpack_fuel = PHYS_JETPACK_FUEL;
  72 }
  73 #endif
  74
  75 float IsMoveInDirection(vector mv, float angle) // key mix factor
  76 {
  77         if (mv_x == 0 && mv_y == 0)
  78                 return 0; // avoid division by zero
  79         angle -= RAD2DEG * atan2(mv_y, mv_x);
  80         angle = remainder(angle, 360) / 45;
  81         return angle > 1 ? 0 : angle < -1 ? 0 : 1 - fabs(angle);
  82 }
  83
  84 float GeomLerp(float a, float lerp, float b)
  85 {
  86         return a == 0 ? (lerp < 1 ? 0 : b)
  87                 : b == 0 ? (lerp > 0 ? 0 : a)
  88                 : a * pow(fabs(b / a), lerp);
  89 }
  90
  91 noref float pmove_waterjumptime;
  92
  93 const float unstick_count = 27;
  94 vector unstick_offsets[unstick_count] =
  95 {
  96 // 1 no nudge (just return the original if this test passes)
  97         '0.000   0.000  0.000',
  98 // 6 simple nudges
  99         ' 0.000  0.000  0.125', '0.000  0.000 -0.125',
 100         '-0.125  0.000  0.000', '0.125  0.000  0.000',
 101         ' 0.000 -0.125  0.000', '0.000  0.125  0.000',
 102 // 4 diagonal flat nudges
 103         '-0.125 -0.125  0.000', '0.125 -0.125  0.000',
 104         '-0.125  0.125  0.000', '0.125  0.125  0.000',
 105 // 8 diagonal upward nudges
 106         '-0.125  0.000  0.125', '0.125  0.000  0.125',
 107         ' 0.000 -0.125  0.125', '0.000  0.125  0.125',
 108         '-0.125 -0.125  0.125', '0.125 -0.125  0.125',
 109         '-0.125  0.125  0.125', '0.125  0.125  0.125',
 110 // 8 diagonal downward nudges
 111         '-0.125  0.000 -0.125', '0.125  0.000 -0.125',
 112         ' 0.000 -0.125 -0.125', '0.000  0.125 -0.125',
 113         '-0.125 -0.125 -0.125', '0.125 -0.125 -0.125',
 114         '-0.125  0.125 -0.125', '0.125  0.125 -0.125',
 115 };
 116
 117 void PM_ClientMovement_Unstick()
 118 {
 119         float i;
 120         for (i = 0; i < unstick_count; i++)
 121         {
 122                 vector neworigin = unstick_offsets[i] + self.origin;
 123                 tracebox(neworigin, PL_CROUCH_MIN, PL_CROUCH_MAX, neworigin, MOVE_NORMAL, self);
 124                 if (!trace_startsolid)
 125                 {
 126                         self.origin = neworigin;
 127                         return;// true;
 128                 }
 129         }
 130 }
 131
 132 void PM_ClientMovement_UpdateStatus()
 133 {
 134         // make sure player is not stuck
 135         PM_ClientMovement_Unstick();
 136
 137         // set crouched
 138         if (PHYS_INPUT_BUTTON_CROUCH(self))
 139         {
 140                 // wants to crouch, this always works..
 141                 if (!IS_DUCKED(self))
 142                         SET_DUCKED(self);
 143         }
 144         else
 145         {
 146                 // wants to stand, if currently crouching we need to check for a
 147                 // low ceiling first
 148                 if (IS_DUCKED(self))
 149                 {
 150                         tracebox(self.origin, PL_MIN, PL_MAX, self.origin, MOVE_NORMAL, self);
 151                         if (!trace_startsolid)
 152                                 UNSET_DUCKED(self);
 153                 }
 154         }
 155
 156         // set onground
 157         vector origin1 = self.origin + '0 0 1';
 158         vector origin2 = self.origin - '0 0 1';
 159
 160         tracebox(origin1, self.mins, self.maxs, origin2, MOVE_NORMAL, self);
 161         if (trace_fraction < 1 && trace_plane_normal_z > 0.7)
 162         {
 163                 SET_ONGROUND(self);
 164
 165                 // this code actually "predicts" an impact; so let's clip velocity first
 166                 float f = dotproduct(self.velocity, trace_plane_normal);
 167                 if (f < 0) // only if moving downwards actually
 168                         self.velocity -= f * trace_plane_normal;
 169         }
 170         else
 171                 UNSET_ONGROUND(self);
 172
 173         // set watertype/waterlevel
 174         origin1 = self.origin;
 175         origin1_z += self.mins_z + 1;
 176         self.waterlevel = WATERLEVEL_NONE;
 177
 178         self.watertype = (pointcontents(origin1) == CONTENT_WATER);
 179
 180         if(self.watertype)
 181         {
 182                 self.waterlevel = WATERLEVEL_WETFEET;
 183                 origin1_z = self.origin_z + (self.mins_z + self.maxs_z) * 0.5;
 184                 if(pointcontents(origin1) == CONTENT_WATER)
 185                 {
 186                         self.waterlevel = WATERLEVEL_SWIMMING;
 187                         origin1_z = self.origin_z + 22;
 188                         if(pointcontents(origin1) == CONTENT_WATER)
 189                                 self.waterlevel = WATERLEVEL_SUBMERGED;
 190                 }
 191         }
 192
 193         if(IS_ONGROUND(self) || self.velocity_z <= 0 || pmove_waterjumptime <= 0)
 194                 pmove_waterjumptime = 0;
 195 }
 196
 197 void PM_ClientMovement_Move()
 198 {
 199 #ifdef CSQC
 200         float t = PHYS_INPUT_TIMELENGTH;
 201         vector primalvelocity = self.velocity;
 202         PM_ClientMovement_UpdateStatus();
 203         float bump = 0;
 204         for (bump = 0; bump < 8 && self.velocity * self.velocity > 0; bump++)
 205         {
 206                 vector neworigin = self.origin + t * self.velocity;
 207                 tracebox(self.origin, self.mins, self.maxs, neworigin, MOVE_NORMAL, self);
 208                 float old_trace1_fraction = trace_fraction;
 209                 vector old_trace1_endpos = trace_endpos;
 210                 vector old_trace1_plane_normal = trace_plane_normal;
 211                 if (trace_fraction < 1 && trace_plane_normal_z == 0)
 212                 {
 213                         // may be a step or wall, try stepping up
 214                         // first move forward at a higher level
 215                         vector currentorigin2 = self.origin;
 216                         currentorigin2_z += PHYS_STEPHEIGHT;
 217                         vector neworigin2 = neworigin;
 218                         neworigin2_z = self.origin_z + PHYS_STEPHEIGHT;
 219                         tracebox(currentorigin2, self.mins, self.maxs, neworigin2, MOVE_NORMAL, self);
 220                         if (!trace_startsolid)
 221                         {
 222                                 // then move down from there
 223                                 currentorigin2 = trace_endpos;
 224                                 neworigin2 = trace_endpos;
 225                                 neworigin2_z = self.origin_z;
 226                                 float old_trace2_fraction = trace_fraction;
 227                                 vector old_trace2_plane_normal = trace_plane_normal;
 228                                 tracebox(currentorigin2, self.mins, self.maxs, neworigin2, MOVE_NORMAL, self);
 229                                 //Con_Printf("%f %f %f %f : %f %f %f %f : %f %f %f %f\n", trace.fraction, trace.endpos[0], trace.endpos[1], trace.endpos[2], trace2.fraction, trace2.endpos[0], trace2.endpos[1], trace2.endpos[2], trace3.fraction, trace3.endpos[0], trace3.endpos[1], trace3.endpos[2]);
 230                                 // accept the new trace if it made some progress
 231                                 if (fabs(trace_endpos_x - old_trace1_endpos_x) >= 0.03125 || fabs(trace_endpos_y - old_trace1_endpos_y) >= 0.03125)
 232                                 {
 233                                         trace_fraction = old_trace2_fraction;
 234                                         trace_endpos = trace_endpos;
 235                                         trace_plane_normal = old_trace2_plane_normal;
 236                                 }
 237                                 else
 238                                 {
 239                                         trace_fraction = old_trace1_fraction;
 240                                         trace_endpos = old_trace1_endpos;
 241                                         trace_plane_normal = old_trace1_plane_normal;
 242                                 }
 243                         }
 244                 }
 245
 246                 // check if it moved at all
 247                 if (trace_fraction >= 0.001)
 248                         self.origin = trace_endpos;
 249
 250                 // check if it moved all the way
 251                 if (trace_fraction == 1)
 252                         break;
 253
 254                 // this is only really needed for nogravityonground combined with gravityunaffectedbyticrate
 255                 // <LordHavoc> I'm pretty sure I commented it out solely because it seemed redundant
 256                 // this got commented out in a change that supposedly makes the code match QW better
 257                 // so if this is broken, maybe put it in an if (cls.protocol != PROTOCOL_QUAKEWORLD) block
 258                 if (trace_plane_normal_z > 0.7)
 259                         SET_ONGROUND(self);
 260
 261                 t -= t * trace_fraction;
 262
 263                 float f = dotproduct(self.velocity, trace_plane_normal);
 264                 self.velocity -= f * trace_plane_normal;
 265         }
 266         if (pmove_waterjumptime > 0)
 267                 self.velocity = primalvelocity;
 268 #endif
 269 }
 270
 271 void CPM_PM_Aircontrol(vector wishdir, float wishspeed)
 272 {
 273         float k;
 274 #if 0
 275         // this doesn't play well with analog input
 276         if (PHYS_INPUT_MOVEVALUES(self).x == 0 || PHYS_INPUT_MOVEVALUES(self).y != 0)
 277                 return; // can't control movement if not moving forward or backward
 278         k = 32;
 279 #else
 280         k = 32 * (2 * IsMoveInDirection(PHYS_INPUT_MOVEVALUES(self), 0) - 1);
 281         if (k <= 0)
 282                 return;
 283 #endif
 284
 285         k *= bound(0, wishspeed / PHYS_MAXAIRSPEED, 1);
 286
 287         float zspeed = self.velocity_z;
 288         self.velocity_z = 0;
 289         float xyspeed = vlen(self.velocity);
 290         self.velocity = normalize(self.velocity);
 291
 292         float dot = self.velocity * wishdir;
 293
 294         if (dot > 0) // we can't change direction while slowing down
 295         {
 296                 k *= pow(dot, PHYS_AIRCONTROL_POWER)*PHYS_INPUT_TIMELENGTH;
 297                 xyspeed = max(0, xyspeed - PHYS_AIRCONTROL_PENALTY * sqrt(max(0, 1 - dot*dot)) * k/32);
 298                 k *= PHYS_AIRCONTROL;
 299                 self.velocity = normalize(self.velocity * xyspeed + wishdir * k);
 300         }
 301
 302         self.velocity = self.velocity * xyspeed;
 303         self.velocity_z = zspeed;
 304 }
 305
 306 float AdjustAirAccelQW(float accelqw, float factor)
 307 {
 308         return copysign(bound(0.000001, 1 - (1 - fabs(accelqw)) * factor, 1), accelqw);
 309 }
 310
 311 // example config for alternate speed clamping:
 312 //   sv_airaccel_qw 0.8
 313 //   sv_airaccel_sideways_friction 0
 314 //   prvm_globalset server speedclamp_mode 1
 315 //     (or 2)
 316 void PM_Accelerate(vector wishdir, float wishspeed, float wishspeed0, float accel, float accelqw, float stretchfactor, float sidefric, float speedlimit)
 317 {
 318         float speedclamp = stretchfactor > 0 ? stretchfactor
 319         : accelqw < 0 ? 1 // full clamping, no stretch
 320         : -1; // no clamping
 321
 322         accelqw = fabs(accelqw);
 323
 324         if (GAMEPLAYFIX_Q2AIRACCELERATE)
 325                 wishspeed0 = wishspeed; // don't need to emulate this Q1 bug
 326
 327         float vel_straight = self.velocity * wishdir;
 328         float vel_z = self.velocity_z;
 329         vector vel_xy = vec2(self.velocity);
 330         vector vel_perpend = vel_xy - vel_straight * wishdir;
 331
 332         float step = accel * PHYS_INPUT_TIMELENGTH * wishspeed0;
 333
 334         float vel_xy_current  = vlen(vel_xy);
 335         if (speedlimit)
 336                 accelqw = AdjustAirAccelQW(accelqw, (speedlimit - bound(wishspeed, vel_xy_current, speedlimit)) / max(1, speedlimit - wishspeed));
 337         float vel_xy_forward =  vel_xy_current  + bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
 338         float vel_xy_backward = vel_xy_current  - bound(0, wishspeed + vel_xy_current, step) * accelqw - step * (1 - accelqw);
 339         vel_xy_backward = max(0, vel_xy_backward); // not that it REALLY occurs that this would cause wrong behaviour afterwards
 340         vel_straight =          vel_straight    + bound(0, wishspeed - vel_straight,   step) * accelqw + step * (1 - accelqw);
 341
 342         if (sidefric < 0 && (vel_perpend*vel_perpend))
 343                 // negative: only apply so much sideways friction to stay below the speed you could get by "braking"
 344         {
 345                 float f = max(0, 1 + PHYS_INPUT_TIMELENGTH * wishspeed * sidefric);
 346                 float fmin = (vel_xy_backward * vel_xy_backward - vel_straight * vel_straight) / (vel_perpend * vel_perpend);
 347                 // assume: fmin > 1
 348                 // vel_xy_backward*vel_xy_backward - vel_straight*vel_straight > vel_perpend*vel_perpend
 349                 // vel_xy_backward*vel_xy_backward > vel_straight*vel_straight + vel_perpend*vel_perpend
 350                 // vel_xy_backward*vel_xy_backward > vel_xy * vel_xy
 351                 // obviously, this cannot be
 352                 if (fmin <= 0)
 353                         vel_perpend *= f;
 354                 else
 355                 {
 356                         fmin = sqrt(fmin);
 357                         vel_perpend *= max(fmin, f);
 358                 }
 359         }
 360         else
 361                 vel_perpend *= max(0, 1 - PHYS_INPUT_TIMELENGTH * wishspeed * sidefric);
 362
 363         vel_xy = vel_straight * wishdir + vel_perpend;
 364
 365         if (speedclamp >= 0)
 366         {
 367                 float vel_xy_preclamp;
 368                 vel_xy_preclamp = vlen(vel_xy);
 369                 if (vel_xy_preclamp > 0) // prevent division by zero
 370                 {
 371                         vel_xy_current += (vel_xy_forward - vel_xy_current) * speedclamp;
 372                         if (vel_xy_current < vel_xy_preclamp)
 373                                 vel_xy *= (vel_xy_current / vel_xy_preclamp);
 374                 }
 375         }
 376
 377         self.velocity = vel_xy + vel_z * '0 0 1';
 378 }
 379
 380 void PM_AirAccelerate(vector wishdir, float wishspeed)
 381 {
 382         if (wishspeed == 0)
 383                 return;
 384
 385         vector curvel = self.velocity;
 386         curvel_z = 0;
 387         float curspeed = vlen(curvel);
 388
 389         if (wishspeed > curspeed * 1.01)
 390                 wishspeed = min(wishspeed, curspeed + PHYS_WARSOWBUNNY_AIRFORWARDACCEL * PHYS_MAXSPEED(self) * PHYS_INPUT_TIMELENGTH);
 391         else
 392         {
 393                 float f = max(0, (PHYS_WARSOWBUNNY_TOPSPEED - curspeed) / (PHYS_WARSOWBUNNY_TOPSPEED - PHYS_MAXSPEED(self)));
 394                 wishspeed = max(curspeed, PHYS_MAXSPEED(self)) + PHYS_WARSOWBUNNY_ACCEL * f * PHYS_MAXSPEED(self) * PHYS_INPUT_TIMELENGTH;
 395         }
 396         vector wishvel = wishdir * wishspeed;
 397         vector acceldir = wishvel - curvel;
 398         float addspeed = vlen(acceldir);
 399         acceldir = normalize(acceldir);
 400
 401         float accelspeed = min(addspeed, PHYS_WARSOWBUNNY_TURNACCEL * PHYS_MAXSPEED(self) * PHYS_INPUT_TIMELENGTH);
 402
 403         if (PHYS_WARSOWBUNNY_BACKTOSIDERATIO < 1)
 404         {
 405                 vector curdir = normalize(curvel);
 406                 float dot = acceldir * curdir;
 407                 if (dot < 0)
 408                         acceldir -= (1 - PHYS_WARSOWBUNNY_BACKTOSIDERATIO) * dot * curdir;
 409         }
 410
 411         self.velocity += accelspeed * acceldir;
 412 }
 413
 414
 415 /*
 416 =============
 417 PlayerJump
 418
 419 When you press the jump key
 420 =============
 421 */
 422 void PlayerJump (void)
 423 {
 424 #ifdef SVQC
 425         if (PHYS_FROZEN(self))
 426                 return; // no jumping in freezetag when frozen
 427
 428         if (self.player_blocked)
 429                 return; // no jumping while blocked
 430
 431         float doublejump = FALSE;
 432         float mjumpheight = PHYS_JUMPVELOCITY;
 433
 434         player_multijump = doublejump;
 435         player_jumpheight = mjumpheight;
 436         if (MUTATOR_CALLHOOK(PlayerJump))
 437                 return;
 438
 439         doublejump = player_multijump;
 440         mjumpheight = player_jumpheight;
 441
 442         if (autocvar_sv_doublejump)
 443         {
 444                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
 445                 if (trace_fraction < 1 && trace_plane_normal_z > 0.7)
 446                 {
 447                         doublejump = TRUE;
 448
 449                         // we MUST clip velocity here!
 450                         float f;
 451                         f = self.velocity * trace_plane_normal;
 452                         if (f < 0)
 453                                 self.velocity -= f * trace_plane_normal;
 454                 }
 455         }
 456
 457         if (self.waterlevel >= WATERLEVEL_SWIMMING)
 458         {
 459                 self.velocity_z = PHYS_MAXSPEED(self) * 0.7;
 460                 return;
 461         }
 462
 463         if (!doublejump)
 464                 if (!IS_ONGROUND(self))
 465                         return;
 466
 467         if (self.cvar_cl_movement_track_canjump)
 468                 if (!(self.flags & FL_JUMPRELEASED))
 469                         return;
 470
 471         // sv_jumpspeedcap_min/sv_jumpspeedcap_max act as baseline
 472         // velocity bounds.  Final velocity is bound between (jumpheight *
 473         // min + jumpheight) and (jumpheight * max + jumpheight);
 474
 475         if (autocvar_sv_jumpspeedcap_min != "")
 476         {
 477                 float minjumpspeed = mjumpheight * stof(autocvar_sv_jumpspeedcap_min);
 478
 479                 if (self.velocity_z < minjumpspeed)
 480                         mjumpheight += minjumpspeed - self.velocity_z;
 481         }
 482
 483         if (autocvar_sv_jumpspeedcap_max != "")
 484         {
 485                 // don't do jump speedcaps on ramps to preserve old xonotic ramjump style
 486                 tracebox(self.origin + '0 0 0.01', self.mins, self.maxs, self.origin - '0 0 0.01', MOVE_NORMAL, self);
 487
 488                 if (!(trace_fraction < 1 && trace_plane_normal_z < 0.98 && autocvar_sv_jumpspeedcap_max_disable_on_ramps))
 489                 {
 490                         float maxjumpspeed = mjumpheight * stof(autocvar_sv_jumpspeedcap_max);
 491
 492                         if (self.velocity_z > maxjumpspeed)
 493                                 mjumpheight -= self.velocity_z - maxjumpspeed;
 494                 }
 495         }
 496
 497         if (!(self.lastflags & FL_ONGROUND))
 498         {
 499                 if (autocvar_speedmeter)
 500                         dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
 501                 if (self.lastground < time - 0.3)
 502                 {
 503                         self.velocity_x *= (1 - autocvar_sv_friction_on_land);
 504                         self.velocity_y *= (1 - autocvar_sv_friction_on_land);
 505                 }
 506                 if (self.jumppadcount > 1)
 507                         dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
 508                 self.jumppadcount = 0;
 509         }
 510
 511         self.oldvelocity_z = self.velocity_z += mjumpheight;
 512
 513         UNSET_ONGROUND(self);
 514         self.flags &= ~FL_JUMPRELEASED;
 515
 516         animdecide_setaction(self, ANIMACTION_JUMP, TRUE);
 517
 518         if (autocvar_g_jump_grunt)
 519                 PlayerSound(playersound_jump, CH_PLAYER, VOICETYPE_PLAYERSOUND);
 520
 521         self.restart_jump = -1; // restart jump anim next time
 522         // value -1 is used to not use the teleport bit (workaround for tiny hitch when re-jumping)
 523 #endif
 524 }
 525
 526 void CheckWaterJump()
 527 {
 528 // check for a jump-out-of-water
 529         makevectors(PHYS_INPUT_ANGLES(self));
 530         vector start = self.origin;
 531         start_z += 8;
 532         v_forward_z = 0;
 533         normalize(v_forward);
 534         vector end = start + v_forward*24;
 535         traceline (start, end, TRUE, self);
 536         if (trace_fraction < 1)
 537         {       // solid at waist
 538                 start_z = start_z + self.maxs_z - 8;
 539                 end = start + v_forward*24;
 540                 self.movedir = trace_plane_normal * -50;
 541                 traceline(start, end, TRUE, self);
 542                 if (trace_fraction == 1)
 543                 {       // open at eye level
 544                         self.velocity_z = 225;
 545 #ifdef SVQC
 546                         self.flags |= FL_WATERJUMP;
 547                         self.flags &= ~FL_JUMPRELEASED;
 548                         self.teleport_time = time + 2;  // safety net
 549 #endif
 550                 }
 551         }
 552 }
 553
 554 void CheckPlayerJump()
 555 {
 556 #ifdef SVQC
 557         if (self.BUTTON_JUMP)
 558                 PlayerJump();
 559         else
 560                 self.flags |= FL_JUMPRELEASED;
 561
 562 #endif
 563         if (self.waterlevel == WATERLEVEL_SWIMMING)
 564                 CheckWaterJump();
 565 }
 566
 567 float racecar_angle(float forward, float down)
 568 {
 569         if (forward < 0)
 570         {
 571                 forward = -forward;
 572                 down = -down;
 573         }
 574
 575         float ret = vectoyaw('0 1 0' * down + '1 0 0' * forward);
 576
 577         float angle_mult = forward / (800 + forward);
 578
 579         if (ret > 180)
 580                 return ret * angle_mult + 360 * (1 - angle_mult);
 581         else
 582                 return ret * angle_mult;
 583 }
 584
 585 void RaceCarPhysics()
 586 {
 587 #ifdef SVQC
 588         // using this move type for "big rigs"
 589         // the engine does not push the entity!
 590
 591         vector rigvel;
 592
 593         vector angles_save = self.angles;
 594         float accel = bound(-1, PHYS_INPUT_MOVEVALUES(self).x / PHYS_MAXSPEED(self), 1);
 595         float steer = bound(-1, PHYS_INPUT_MOVEVALUES(self).y / PHYS_MAXSPEED(self), 1);
 596
 597         if (g_bugrigs_reverse_speeding)
 598         {
 599                 if (accel < 0)
 600                 {
 601                         // back accel is DIGITAL
 602                         // to prevent speedhack
 603                         if (accel < -0.5)
 604                                 accel = -1;
 605                         else
 606                                 accel = 0;
 607                 }
 608         }
 609
 610         self.angles_x = 0;
 611         self.angles_z = 0;
 612         makevectors(self.angles); // new forward direction!
 613
 614         if (IS_ONGROUND(self) || g_bugrigs_air_steering)
 615         {
 616                 float myspeed = self.velocity * v_forward;
 617                 float upspeed = self.velocity * v_up;
 618
 619                 // responsiveness factor for steering and acceleration
 620                 float f = 1 / (1 + pow(max(-myspeed, myspeed) / g_bugrigs_speed_ref, g_bugrigs_speed_pow));
 621                 //MAXIMA: f(v) := 1 / (1 + (v / g_bugrigs_speed_ref) ^ g_bugrigs_speed_pow);
 622
 623                 float steerfactor;
 624                 if (myspeed < 0 && g_bugrigs_reverse_spinning)
 625                         steerfactor = -myspeed * g_bugrigs_steer;
 626                 else
 627                         steerfactor = -myspeed * f * g_bugrigs_steer;
 628
 629                 float accelfactor;
 630                 if (myspeed < 0 && g_bugrigs_reverse_speeding)
 631                         accelfactor = g_bugrigs_accel;
 632                 else
 633                         accelfactor = f * g_bugrigs_accel;
 634                 //MAXIMA: accel(v) := f(v) * g_bugrigs_accel;
 635
 636                 if (accel < 0)
 637                 {
 638                         if (myspeed > 0)
 639                         {
 640                                 myspeed = max(0, myspeed - PHYS_INPUT_TIMELENGTH * (g_bugrigs_friction_floor - g_bugrigs_friction_brake * accel));
 641                         }
 642                         else
 643                         {
 644                                 if (!g_bugrigs_reverse_speeding)
 645                                         myspeed = min(0, myspeed + PHYS_INPUT_TIMELENGTH * g_bugrigs_friction_floor);
 646                         }
 647                 }
 648                 else
 649                 {
 650                         if (myspeed >= 0)
 651                         {
 652                                 myspeed = max(0, myspeed - PHYS_INPUT_TIMELENGTH * g_bugrigs_friction_floor);
 653                         }
 654                         else
 655                         {
 656                                 if (g_bugrigs_reverse_stopping)
 657                                         myspeed = 0;
 658                                 else
 659                                         myspeed = min(0, myspeed + PHYS_INPUT_TIMELENGTH * (g_bugrigs_friction_floor + g_bugrigs_friction_brake * accel));
 660                         }
 661                 }
 662                 // terminal velocity = velocity at which 50 == accelfactor, that is, 1549 units/sec
 663                 //MAXIMA: friction(v) := g_bugrigs_friction_floor;
 664
 665                 self.angles_y += steer * PHYS_INPUT_TIMELENGTH * steerfactor; // apply steering
 666                 makevectors(self.angles); // new forward direction!
 667
 668                 myspeed += accel * accelfactor * PHYS_INPUT_TIMELENGTH;
 669
 670                 rigvel = myspeed * v_forward + '0 0 1' * upspeed;
 671         }
 672         else
 673         {
 674                 float myspeed = vlen(self.velocity);
 675
 676                 // responsiveness factor for steering and acceleration
 677                 float f = 1 / (1 + pow(max(0, myspeed / g_bugrigs_speed_ref), g_bugrigs_speed_pow));
 678                 float steerfactor = -myspeed * f;
 679                 self.angles_y += steer * PHYS_INPUT_TIMELENGTH * steerfactor; // apply steering
 680
 681                 rigvel = self.velocity;
 682                 makevectors(self.angles); // new forward direction!
 683         }
 684
 685         rigvel *= max(0, 1 - vlen(rigvel) * g_bugrigs_friction_air * PHYS_INPUT_TIMELENGTH);
 686         //MAXIMA: airfriction(v) := v * v * g_bugrigs_friction_air;
 687         //MAXIMA: total_acceleration(v) := accel(v) - friction(v) - airfriction(v);
 688         //MAXIMA: solve(total_acceleration(v) = 0, v);
 689
 690         if (g_bugrigs_planar_movement)
 691         {
 692                 vector rigvel_xy, neworigin, up;
 693                 float mt;
 694
 695                 rigvel_z -= PHYS_INPUT_TIMELENGTH * PHYS_GRAVITY; // 4x gravity plays better
 696                 rigvel_xy = vec2(rigvel);
 697
 698                 if (g_bugrigs_planar_movement_car_jumping)
 699                         mt = MOVE_NORMAL;
 700                 else
 701                         mt = MOVE_NOMONSTERS;
 702
 703                 tracebox(self.origin, self.mins, self.maxs, self.origin + '0 0 1024', mt, self);
 704                 up = trace_endpos - self.origin;
 705
 706                 // BUG RIGS: align the move to the surface instead of doing collision testing
 707                 // can we move?
 708                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos + rigvel_xy * PHYS_INPUT_TIMELENGTH, mt, self);
 709
 710                 // align to surface
 711                 tracebox(trace_endpos, self.mins, self.maxs, trace_endpos - up + '0 0 1' * rigvel_z * PHYS_INPUT_TIMELENGTH, mt, self);
 712
 713                 if (trace_fraction < 0.5)
 714                 {
 715                         trace_fraction = 1;
 716                         neworigin = self.origin;
 717                 }
 718                 else
 719                         neworigin = trace_endpos;
 720
 721                 if (trace_fraction < 1)
 722                 {
 723                         // now set angles_x so that the car points parallel to the surface
 724                         self.angles = vectoangles(
 725                                         '1 0 0' * v_forward_x * trace_plane_normal_z
 726                                         +
 727                                         '0 1 0' * v_forward_y * trace_plane_normal_z
 728                                         +
 729                                         '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y)
 730                                         );
 731                         SET_ONGROUND(self);
 732                 }
 733                 else
 734                 {
 735                         // now set angles_x so that the car points forward, but is tilted in velocity direction
 736                         UNSET_ONGROUND(self);
 737                 }
 738
 739                 self.velocity = (neworigin - self.origin) * (1.0 / PHYS_INPUT_TIMELENGTH);
 740                 self.movetype = MOVETYPE_NOCLIP;
 741         }
 742         else
 743         {
 744                 rigvel_z -= PHYS_INPUT_TIMELENGTH * PHYS_GRAVITY; // 4x gravity plays better
 745                 self.velocity = rigvel;
 746                 self.movetype = MOVETYPE_FLY;
 747         }
 748
 749         trace_fraction = 1;
 750         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 4', MOVE_NORMAL, self);
 751         if (trace_fraction != 1)
 752         {
 753                 self.angles = vectoangles2(
 754                                 '1 0 0' * v_forward_x * trace_plane_normal_z
 755                                 +
 756                                 '0 1 0' * v_forward_y * trace_plane_normal_z
 757                                 +
 758                                 '0 0 1' * -(v_forward_x * trace_plane_normal_x + v_forward_y * trace_plane_normal_y),
 759                                 trace_plane_normal
 760                                 );
 761         }
 762         else
 763         {
 764                 vector vel_local;
 765
 766                 vel_local_x = v_forward * self.velocity;
 767                 vel_local_y = v_right * self.velocity;
 768                 vel_local_z = v_up * self.velocity;
 769
 770                 self.angles_x = racecar_angle(vel_local_x, vel_local_z);
 771                 self.angles_z = racecar_angle(-vel_local_y, vel_local_z);
 772         }
 773
 774         // smooth the angles
 775         vector vf1, vu1, smoothangles;
 776         makevectors(self.angles);
 777         float f = bound(0, PHYS_INPUT_TIMELENGTH * g_bugrigs_angle_smoothing, 1);
 778         if (f == 0)
 779                 f = 1;
 780         vf1 = v_forward * f;
 781         vu1 = v_up * f;
 782         makevectors(angles_save);
 783         vf1 = vf1 + v_forward * (1 - f);
 784         vu1 = vu1 + v_up * (1 - f);
 785         smoothangles = vectoangles2(vf1, vu1);
 786         self.angles_x = -smoothangles_x;
 787         self.angles_z =  smoothangles_z;
 788 #endif
 789 }
 790
 791 string specialcommand = "xwxwxsxsxaxdxaxdx1x ";
 792 .float specialcommand_pos;
 793 void SpecialCommand()
 794 {
 795 #ifdef SVQC
 796 #ifdef TETRIS
 797         TetrisImpulse();
 798 #else
 799         if (!CheatImpulse(99))
 800                 print("A hollow voice says \"Plugh\".\n");
 801 #endif
 802 #endif
 803 }
 804
 805 #ifdef SVQC
 806 float speedaward_speed;
 807 string speedaward_holder;
 808 string speedaward_uid;
 809 #endif
 810 void race_send_speedaward(float msg)
 811 {
 812 #ifdef SVQC
 813         // send the best speed of the round
 814         WriteByte(msg, SVC_TEMPENTITY);
 815         WriteByte(msg, TE_CSQC_RACE);
 816         WriteByte(msg, RACE_NET_SPEED_AWARD);
 817         WriteInt24_t(msg, floor(speedaward_speed+0.5));
 818         WriteString(msg, speedaward_holder);
 819 #endif
 820 }
 821
 822 #ifdef SVQC
 823 float speedaward_alltimebest;
 824 string speedaward_alltimebest_holder;
 825 string speedaward_alltimebest_uid;
 826 #endif
 827 void race_send_speedaward_alltimebest(float msg)
 828 {
 829 #ifdef SVQC
 830         // send the best speed
 831         WriteByte(msg, SVC_TEMPENTITY);
 832         WriteByte(msg, TE_CSQC_RACE);
 833         WriteByte(msg, RACE_NET_SPEED_AWARD_BEST);
 834         WriteInt24_t(msg, floor(speedaward_alltimebest+0.5));
 835         WriteString(msg, speedaward_alltimebest_holder);
 836 #endif
 837 }
 838
 839 float PM_check_keepaway(void)
 840 {
 841 #ifdef SVQC
 842         return (self.ballcarried && g_keepaway) ? autocvar_g_keepaway_ballcarrier_highspeed : 1;
 843 #else
 844         return 1;
 845 #endif
 846 }
 847
 848 void PM_check_race_movetime(void)
 849 {
 850 #ifdef SVQC
 851         self.race_movetime_frac += PHYS_INPUT_TIMELENGTH;
 852         float f = floor(self.race_movetime_frac);
 853         self.race_movetime_frac -= f;
 854         self.race_movetime_count += f;
 855         self.race_movetime = self.race_movetime_frac + self.race_movetime_count;
 856 #endif
 857 }
 858
 859 float PM_check_specialcommand(float buttons)
 860 {
 861 #ifdef SVQC
 862         string c;
 863         if (!buttons)
 864                 c = "x";
 865         else if (buttons == 1)
 866                 c = "1";
 867         else if (buttons == 2)
 868                 c = " ";
 869         else if (buttons == 128)
 870                 c = "s";
 871         else if (buttons == 256)
 872                 c = "w";
 873         else if (buttons == 512)
 874                 c = "a";
 875         else if (buttons == 1024)
 876                 c = "d";
 877         else
 878                 c = "?";
 879
 880         if (c == substring(specialcommand, self.specialcommand_pos, 1))
 881         {
 882                 self.specialcommand_pos += 1;
 883                 if (self.specialcommand_pos >= strlen(specialcommand))
 884                 {
 885                         self.specialcommand_pos = 0;
 886                         SpecialCommand();
 887                         return TRUE;
 888                 }
 889         }
 890         else if (self.specialcommand_pos && (c != substring(specialcommand, self.specialcommand_pos - 1, 1)))
 891                 self.specialcommand_pos = 0;
 892 #endif
 893         return FALSE;
 894 }
 895
 896 void PM_check_nickspam(void)
 897 {
 898 #ifdef SVQC
 899         if (time >= self.nickspamtime)
 900                 return;
 901         if (self.nickspamcount >= autocvar_g_nick_flood_penalty_yellow)
 902         {
 903                 // slight annoyance for nick change scripts
 904                 PHYS_INPUT_MOVEVALUES(self) = -1 * PHYS_INPUT_MOVEVALUES(self);
 905                 self.BUTTON_ATCK = self.BUTTON_JUMP = self.BUTTON_ATCK2 = self.BUTTON_ZOOM = self.BUTTON_CROUCH = self.BUTTON_HOOK = self.BUTTON_USE = 0;
 906
 907                 if (self.nickspamcount >= autocvar_g_nick_flood_penalty_red) // if you are persistent and the slight annoyance above does not stop you, I'll show you!
 908                 {
 909                         PHYS_INPUT_ANGLES(self)_x = random() * 360;
 910                         PHYS_INPUT_ANGLES(self)_y = random() * 360;
 911                         // at least I'm not forcing retardedview by also assigning to angles_z
 912                         self.fixangle = TRUE;
 913                 }
 914         }
 915 #endif
 916 }
 917
 918 void PM_check_punch()
 919 {
 920 #ifdef SVQC
 921         if (self.punchangle != '0 0 0')
 922         {
 923                 float f = vlen(self.punchangle) - 10 * PHYS_INPUT_TIMELENGTH;
 924                 if (f > 0)
 925                         self.punchangle = normalize(self.punchangle) * f;
 926                 else
 927                         self.punchangle = '0 0 0';
 928         }
 929
 930         if (self.punchvector != '0 0 0')
 931         {
 932                 float f = vlen(self.punchvector) - 30 * PHYS_INPUT_TIMELENGTH;
 933                 if (f > 0)
 934                         self.punchvector = normalize(self.punchvector) * f;
 935                 else
 936                         self.punchvector = '0 0 0';
 937         }
 938 #endif
 939 }
 940
 941 void PM_check_spider(void)
 942 {
 943 #ifdef SVQC
 944         if (time >= self.spider_slowness)
 945                 return;
 946         PHYS_MAXSPEED(self) *= 0.5; // half speed while slow from spider
 947         self.stat_sv_airspeedlimit_nonqw *= 0.5;
 948 #endif
 949 }
 950
 951 // predict frozen movement, as frozen players CAN move in some cases
 952 void PM_check_frozen(void)
 953 {
 954         if (!PHYS_FROZEN(self))
 955                 return;
 956         if (PHYS_DODGING_FROZEN
 957 #ifdef SVQC
 958         && IS_REAL_CLIENT(self)
 959 #endif
 960         )
 961         {
 962                 PHYS_INPUT_MOVEVALUES(self)_x = bound(-5, PHYS_INPUT_MOVEVALUES(self).x, 5);
 963                 PHYS_INPUT_MOVEVALUES(self)_y = bound(-5, PHYS_INPUT_MOVEVALUES(self).y, 5);
 964                 PHYS_INPUT_MOVEVALUES(self)_z = bound(-5, PHYS_INPUT_MOVEVALUES(self).z, 5);
 965         }
 966         else
 967                 PHYS_INPUT_MOVEVALUES(self) = '0 0 0';
 968
 969         vector midpoint = ((self.absmin + self.absmax) * 0.5);
 970         if (pointcontents(midpoint) == CONTENT_WATER)
 971         {
 972                 self.velocity = self.velocity * 0.5;
 973
 974                 if (pointcontents(midpoint + '0 0 16') == CONTENT_WATER)
 975                         self.velocity_z = 200;
 976         }
 977 }
 978
 979 void PM_check_blocked(void)
 980 {
 981 #ifdef SVQC
 982         if (!self.player_blocked)
 983                 return;
 984         PHYS_INPUT_MOVEVALUES(self) = '0 0 0';
 985         self.disableclientprediction = 1;
 986 #endif
 987 }
 988
 989 #ifdef SVQC
 990 float speedaward_lastsent;
 991 float speedaward_lastupdate;
 992 string GetMapname(void);
 993 #endif
 994 void PM_check_race(void)
 995 {
 996 #ifdef SVQC
 997         if not(g_cts || g_race)
 998                 return;
 999         if (vlen(self.velocity - self.velocity_z * '0 0 1') > speedaward_speed)
1000         {
1001                 speedaward_speed = vlen(self.velocity - self.velocity_z * '0 0 1');
1002                 speedaward_holder = self.netname;
1003                 speedaward_uid = self.crypto_idfp;
1004                 speedaward_lastupdate = time;
1005         }
1006         if (speedaward_speed > speedaward_lastsent && time - speedaward_lastupdate > 1)
1007         {
1008                 string rr = (g_cts) ? CTS_RECORD : RACE_RECORD;
1009                 race_send_speedaward(MSG_ALL);
1010                 speedaward_lastsent = speedaward_speed;
1011                 if (speedaward_speed > speedaward_alltimebest && speedaward_uid != "")
1012                 {
1013                         speedaward_alltimebest = speedaward_speed;
1014                         speedaward_alltimebest_holder = speedaward_holder;
1015                         speedaward_alltimebest_uid = speedaward_uid;
1016                         db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/speed"), ftos(speedaward_alltimebest));
1017                         db_put(ServerProgsDB, strcat(GetMapname(), rr, "speed/crypto_idfp"), speedaward_alltimebest_uid);
1018                         race_send_speedaward_alltimebest(MSG_ALL);
1019                 }
1020         }
1021 #endif
1022 }
1023
1024 void PM_check_vortex(void)
1025 {
1026 #ifdef SVQC
1027         // WEAPONTODO
1028         float xyspeed = vlen(vec2(self.velocity));
1029         if (self.weapon == WEP_VORTEX && WEP_CVAR(vortex, charge) && WEP_CVAR(vortex, charge_velocity_rate) && xyspeed > WEP_CVAR(vortex, charge_minspeed))
1030         {
1031                 // add a maximum of charge_velocity_rate when going fast (f = 1), gradually increasing from minspeed (f = 0) to maxspeed
1032                 xyspeed = min(xyspeed, WEP_CVAR(vortex, charge_maxspeed));
1033                 float f = (xyspeed - WEP_CVAR(vortex, charge_minspeed)) / (WEP_CVAR(vortex, charge_maxspeed) - WEP_CVAR(vortex, charge_minspeed));
1034                 // add the extra charge
1035                 self.vortex_charge = min(1, self.vortex_charge + WEP_CVAR(vortex, charge_velocity_rate) * f * frametime);
1036         }
1037 #endif
1038 }
1039
1040 void PM_fly(float maxspd_mod)
1041 {
1042         // noclipping or flying
1043         UNSET_ONGROUND(self);
1044
1045         self.velocity = self.velocity * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION);
1046         makevectors(PHYS_INPUT_ANGLES(self));
1047         //wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self).x + v_right * PHYS_INPUT_MOVEVALUES(self).y + v_up * PHYS_INPUT_MOVEVALUES(self).z;
1048         vector wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self).x
1049                                         + v_right * PHYS_INPUT_MOVEVALUES(self).y
1050                                         + '0 0 1' * PHYS_INPUT_MOVEVALUES(self).z;
1051         // acceleration
1052         vector wishdir = normalize(wishvel);
1053         float wishspeed = min(vlen(wishvel), PHYS_MAXSPEED(self) * maxspd_mod);
1054         if (time >= self.teleport_time)
1055                 PM_Accelerate(wishdir, wishspeed, wishspeed, PHYS_ACCELERATE * maxspd_mod, 1, 0, 0, 0);
1056 }
1057
1058 void PM_swim(float maxspd_mod)
1059 {
1060         // swimming
1061         UNSET_ONGROUND(self);
1062
1063         float jump = PHYS_INPUT_BUTTON_JUMP(self);
1064         // water jump only in certain situations
1065         // this mimics quakeworld code
1066         if (jump && self.waterlevel == WATERLEVEL_SWIMMING && self.velocity_z >= -180)
1067         {
1068                 vector yawangles = '0 1 0' * PHYS_INPUT_ANGLES(self).y;
1069                 makevectors(yawangles);
1070                 vector forward = v_forward;
1071                 vector spot = self.origin + 24 * forward;
1072                 spot_z += 8;
1073                 traceline(spot, spot, MOVE_NOMONSTERS, self);
1074                 if (trace_startsolid)
1075                 {
1076                         spot_z += 24;
1077                         traceline(spot, spot, MOVE_NOMONSTERS, self);
1078                         if (!trace_startsolid)
1079                         {
1080                                 self.velocity = forward * 50;
1081                                 self.velocity_z = 310;
1082                                 pmove_waterjumptime = 2;
1083                                 UNSET_ONGROUND(self);
1084                                 SET_JUMP_HELD(self);
1085                         }
1086                 }
1087         }
1088         makevectors(PHYS_INPUT_ANGLES(self));
1089         //wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self).x + v_right * PHYS_INPUT_MOVEVALUES(self).y + v_up * PHYS_INPUT_MOVEVALUES(self).z;
1090         vector wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self).x
1091                                         + v_right * PHYS_INPUT_MOVEVALUES(self).y
1092                                         + '0 0 1' * PHYS_INPUT_MOVEVALUES(self).z;
1093         if (wishvel == '0 0 0')
1094                 wishvel = '0 0 -60'; // drift towards bottom
1095
1096         vector wishdir = normalize(wishvel);
1097         float wishspeed = min(vlen(wishvel), PHYS_MAXSPEED(self) * maxspd_mod) * 0.7;
1098
1099         if (IS_DUCKED(self))
1100         wishspeed *= 0.5;
1101
1102 //      if (pmove_waterjumptime <= 0) // TODO: use
1103     {
1104                 // water friction
1105                 float f = 1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION;
1106                 f = min(max(0, f), 1);
1107                 self.velocity *= f;
1108
1109                 f = wishspeed - self.velocity * wishdir;
1110                 if (f > 0)
1111                 {
1112                         float accelspeed = min(PHYS_ACCELERATE * PHYS_INPUT_TIMELENGTH * wishspeed, f);
1113                         self.velocity += accelspeed * wishdir;
1114                 }
1115
1116                 // holding jump button swims upward slowly
1117                 if (jump)
1118                 {
1119 #if 0
1120                         if (self.watertype & CONTENT_LAVA)
1121                                 self.velocity_z =  50;
1122                         else if (self.watertype & CONTENT_SLIME)
1123                                 self.velocity_z =  80;
1124                         else
1125                         {
1126                                 if (IS_NEXUIZ_DERIVED(gamemode))
1127 #endif
1128                                         self.velocity_z = 200;
1129 #if 0
1130                                 else
1131                                         self.velocity_z = 100;
1132                         }
1133 #endif
1134                 }
1135         }
1136         PM_ClientMovement_Move();
1137         // water acceleration
1138         PM_Accelerate(wishdir, wishspeed, wishspeed, PHYS_ACCELERATE * maxspd_mod, 1, 0, 0, 0);
1139 }
1140
1141 void PM_ladder(float maxspd_mod)
1142 {
1143         // on a spawnfunc_func_ladder or swimming in spawnfunc_func_water
1144         UNSET_ONGROUND(self);
1145
1146         float g;
1147         g = PHYS_GRAVITY * PHYS_INPUT_TIMELENGTH;
1148         if (PHYS_ENTGRAVITY(self))
1149                 g *= PHYS_ENTGRAVITY(self);
1150         if (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
1151         {
1152                 g *= 0.5;
1153                 self.velocity_z += g;
1154         }
1155
1156         self.velocity = self.velocity * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION);
1157         makevectors(PHYS_INPUT_ANGLES(self));
1158         //wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self).x + v_right * PHYS_INPUT_MOVEVALUES(self).y + v_up * PHYS_INPUT_MOVEVALUES(self).z;
1159         vector wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self)_x
1160                                         + v_right * PHYS_INPUT_MOVEVALUES(self)_y
1161                                         + '0 0 1' * PHYS_INPUT_MOVEVALUES(self)_z;
1162         self.velocity_z += g;
1163         if (self.ladder_entity.classname == "func_water")
1164         {
1165                 float f = vlen(wishvel);
1166                 if (f > self.ladder_entity.speed)
1167                         wishvel *= (self.ladder_entity.speed / f);
1168
1169                 self.watertype = self.ladder_entity.skin;
1170                 f = self.ladder_entity.origin_z + self.ladder_entity.maxs_z;
1171                 if ((self.origin_z + self.view_ofs_z) < f)
1172                         self.waterlevel = WATERLEVEL_SUBMERGED;
1173                 else if ((self.origin_z + (self.mins_z + self.maxs_z) * 0.5) < f)
1174                         self.waterlevel = WATERLEVEL_SWIMMING;
1175                 else if ((self.origin_z + self.mins_z + 1) < f)
1176                         self.waterlevel = WATERLEVEL_WETFEET;
1177                 else
1178                 {
1179                         self.waterlevel = WATERLEVEL_NONE;
1180                         self.watertype = CONTENT_EMPTY;
1181                 }
1182         }
1183         // acceleration
1184         vector wishdir = normalize(wishvel);
1185         float wishspeed = min(vlen(wishvel), PHYS_MAXSPEED(self) * maxspd_mod);
1186         PM_ClientMovement_Move();
1187 #ifdef SVQC
1188         if (time >= self.teleport_time)
1189 #endif
1190                 // water acceleration
1191                 PM_Accelerate(wishdir, wishspeed, wishspeed, PHYS_ACCELERATE*maxspd_mod, 1, 0, 0, 0);
1192 }
1193
1194 void PM_jetpack(float maxspd_mod)
1195 {
1196         //makevectors(PHYS_INPUT_ANGLES(self).y * '0 1 0');
1197         makevectors(PHYS_INPUT_ANGLES(self));
1198         vector wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self)_x
1199                                         + v_right * PHYS_INPUT_MOVEVALUES(self)_y;
1200         // add remaining speed as Z component
1201         float maxairspd = PHYS_MAXAIRSPEED * max(1, maxspd_mod);
1202         // fix speedhacks :P
1203         wishvel = normalize(wishvel) * min(1, vlen(wishvel) / maxairspd);
1204         // add the unused velocity as up component
1205         wishvel_z = 0;
1206
1207         // if (self.BUTTON_JUMP)
1208                 wishvel_z = sqrt(max(0, 1 - wishvel * wishvel));
1209
1210         // it is now normalized, so...
1211         float a_side = PHYS_JETPACK_ACCEL_SIDE;
1212         float a_up = PHYS_JETPACK_ACCEL_UP;
1213         float a_add = PHYS_JETPACK_ANTIGRAVITY * PHYS_GRAVITY;
1214
1215         wishvel_x *= a_side;
1216         wishvel_y *= a_side;
1217         wishvel_z *= a_up;
1218         wishvel_z += a_add;
1219
1220         float best = 0;
1221         //////////////////////////////////////////////////////////////////////////////////////
1222         // finding the maximum over all vectors of above form
1223         // with wishvel having an absolute value of 1
1224         //////////////////////////////////////////////////////////////////////////////////////
1225         // we're finding the maximum over
1226         //   f(a_side, a_up, a_add, z) := a_side * (1 - z^2) + (a_add + a_up * z)^2;
1227         // for z in the range from -1 to 1
1228         //////////////////////////////////////////////////////////////////////////////////////
1229         // maximum is EITHER attained at the single extreme point:
1230         float a_diff = a_side * a_side - a_up * a_up;
1231         float f;
1232         if (a_diff != 0)
1233         {
1234                 f = a_add * a_up / a_diff; // this is the zero of diff(f(a_side, a_up, a_add, z), z)
1235                 if (f > -1 && f < 1) // can it be attained?
1236                 {
1237                         best = (a_diff + a_add * a_add) * (a_diff + a_up * a_up) / a_diff;
1238                         //print("middle\n");
1239                 }
1240         }
1241         // OR attained at z = 1:
1242         f = (a_up + a_add) * (a_up + a_add);
1243         if (f > best)
1244         {
1245                 best = f;
1246                 //print("top\n");
1247         }
1248         // OR attained at z = -1:
1249         f = (a_up - a_add) * (a_up - a_add);
1250         if (f > best)
1251         {
1252                 best = f;
1253                 //print("bottom\n");
1254         }
1255         best = sqrt(best);
1256         //////////////////////////////////////////////////////////////////////////////////////
1257
1258         //print("best possible acceleration: ", ftos(best), "\n");
1259
1260         float fxy, fz;
1261         fxy = bound(0, 1 - (self.velocity * normalize(wishvel_x * '1 0 0' + wishvel_y * '0 1 0')) / PHYS_JETPACK_MAXSPEED_SIDE, 1);
1262         if (wishvel_z - PHYS_GRAVITY > 0)
1263                 fz = bound(0, 1 - self.velocity_z / PHYS_JETPACK_MAXSPEED_UP, 1);
1264         else
1265                 fz = bound(0, 1 + self.velocity_z / PHYS_JETPACK_MAXSPEED_UP, 1);
1266
1267         float fvel;
1268         fvel = vlen(wishvel);
1269         wishvel_x *= fxy;
1270         wishvel_y *= fxy;
1271         wishvel_z = (wishvel_z - PHYS_GRAVITY) * fz + PHYS_GRAVITY;
1272
1273         fvel = min(1, vlen(wishvel) / best);
1274         if (PHYS_JETPACK_FUEL && !(ITEMS(self) & IT_UNLIMITED_WEAPON_AMMO))
1275                 f = min(1, PHYS_AMMO_FUEL(self) / (PHYS_JETPACK_FUEL * PHYS_INPUT_TIMELENGTH * fvel));
1276         else
1277                 f = 1;
1278
1279         //print("this acceleration: ", ftos(vlen(wishvel) * f), "\n");
1280
1281         if (f > 0 && wishvel != '0 0 0')
1282         {
1283                 self.velocity = self.velocity + wishvel * f * PHYS_INPUT_TIMELENGTH;
1284                 UNSET_ONGROUND(self);
1285
1286 #ifdef SVQC
1287                 if (!(ITEMS(self) & IT_UNLIMITED_WEAPON_AMMO))
1288                         self.ammo_fuel -= PHYS_JETPACK_FUEL * PHYS_INPUT_TIMELENGTH * fvel * f;
1289
1290                 self.items |= IT_USING_JETPACK;
1291
1292                 // jetpack also inhibits health regeneration, but only for 1 second
1293                 self.pauseregen_finished = max(self.pauseregen_finished, time + autocvar_g_balance_pause_fuel_regen);
1294 #endif
1295         }
1296
1297 #ifdef CSQC
1298         float g = PHYS_GRAVITY * PHYS_ENTGRAVITY(self) * PHYS_INPUT_TIMELENGTH;
1299         if (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
1300                 self.velocity_z -= g * 0.5;
1301         else
1302                 self.velocity_z -= g;
1303         PM_ClientMovement_Move();
1304         if (!IS_ONGROUND(self) || !(GAMEPLAYFIX_NOGRAVITYONGROUND))
1305                 if (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
1306                         self.velocity_z -= g * 0.5;
1307 #endif
1308 }
1309
1310 void PM_walk(float buttons_prev, float maxspd_mod)
1311 {
1312 #ifdef SVQC
1313         // we get here if we ran out of ammo
1314         if ((ITEMS(self) & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32) && self.ammo_fuel < 0.01)
1315                 sprint(self, "You don't have any fuel for the ^2Jetpack\n");
1316         if (!(self.lastflags & FL_ONGROUND))
1317         {
1318                 if (autocvar_speedmeter)
1319                         dprint(strcat("landing velocity: ", vtos(self.velocity), " (abs: ", ftos(vlen(self.velocity)), ")\n"));
1320                 if (self.lastground < time - 0.3)
1321                         self.velocity *= (1 - autocvar_sv_friction_on_land);
1322                 if (self.jumppadcount > 1)
1323                         dprint(strcat(ftos(self.jumppadcount), "x jumppad combo\n"));
1324                 self.jumppadcount = 0;
1325         }
1326 #endif
1327         // walking
1328         makevectors(PHYS_INPUT_ANGLES(self).y * '0 1 0');
1329         vector wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self).x
1330                                         + v_right * PHYS_INPUT_MOVEVALUES(self).y;
1331         // acceleration
1332         vector wishdir = normalize(wishvel);
1333         float wishspeed = vlen(wishvel);
1334
1335         wishspeed = min(wishspeed, PHYS_MAXSPEED(self) * maxspd_mod);
1336         if (IS_DUCKED(self))
1337                 wishspeed *= 0.5;
1338
1339         // apply edge friction
1340         float f = vlen(vec2(self.velocity));
1341         if (f > 0)
1342         {
1343                 // TODO: apply edge friction
1344                 // apply ground friction
1345                 f = 1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION * ((f < PHYS_STOPSPEED) ? (PHYS_STOPSPEED / f) : 1);
1346                 f = max(0, f);
1347                 self.velocity *= f;
1348                 /*
1349                    Mathematical analysis time!
1350
1351                    Our goal is to invert this mess.
1352
1353                    For the two cases we get:
1354                         v = v0 * (1 - PHYS_INPUT_TIMELENGTH * (PHYS_STOPSPEED / v0) * PHYS_FRICTION)
1355                           = v0 - PHYS_INPUT_TIMELENGTH * PHYS_STOPSPEED * PHYS_FRICTION
1356                         v0 = v + PHYS_INPUT_TIMELENGTH * PHYS_STOPSPEED * PHYS_FRICTION
1357                    and
1358                         v = v0 * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION)
1359                         v0 = v / (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION)
1360
1361                    These cases would be chosen ONLY if:
1362                         v0 < PHYS_STOPSPEED
1363                         v + PHYS_INPUT_TIMELENGTH * PHYS_STOPSPEED * PHYS_FRICTION < PHYS_STOPSPEED
1364                         v < PHYS_STOPSPEED * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION)
1365                    and, respectively:
1366                         v0 >= PHYS_STOPSPEED
1367                         v / (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION) >= PHYS_STOPSPEED
1368                         v >= PHYS_STOPSPEED * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION)
1369                  */
1370         }
1371         float addspeed = wishspeed - self.velocity * wishdir;
1372         if (addspeed > 0)
1373         {
1374                 float accelspeed = min(PHYS_ACCELERATE * PHYS_INPUT_TIMELENGTH * wishspeed, addspeed);
1375                 self.velocity += accelspeed * wishdir;
1376         }
1377         float g = PHYS_GRAVITY * PHYS_ENTGRAVITY(self) * PHYS_INPUT_TIMELENGTH;
1378         if (!(GAMEPLAYFIX_NOGRAVITYONGROUND))
1379                 self.velocity_z -= g * (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE ? 0.5 : 1);
1380         if (self.velocity * self.velocity)
1381                 PM_ClientMovement_Move();
1382         if (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
1383                 if (!IS_ONGROUND(self) || !GAMEPLAYFIX_NOGRAVITYONGROUND)
1384                         self.velocity_z -= g * 0.5;
1385 }
1386
1387 void PM_air(float buttons_prev, float maxspd_mod)
1388 {
1389 #ifdef SVQC
1390         // we get here if we ran out of ammo
1391         if ((ITEMS(self) & IT_JETPACK) && self.BUTTON_HOOK && !(buttons_prev & 32) && PHYS_AMMO_FUEL(self) < 0.01)
1392                 sprint(self, "You don't have any fuel for the ^2Jetpack\n");
1393 #endif
1394         makevectors(PHYS_INPUT_ANGLES(self).y * '0 1 0');
1395         vector wishvel = v_forward * PHYS_INPUT_MOVEVALUES(self).x
1396                                         + v_right * PHYS_INPUT_MOVEVALUES(self).y;
1397         // acceleration
1398         vector wishdir = normalize(wishvel);
1399         float wishspeed = vlen(wishvel);
1400
1401 #ifdef SVQC
1402         if (time >= self.teleport_time)
1403 #else
1404         if (pmove_waterjumptime <= 0)
1405 #endif
1406         {
1407                 float maxairspd = PHYS_MAXAIRSPEED * min(maxspd_mod, 1);
1408
1409                 // apply air speed limit
1410                 float airaccelqw = PHYS_AIRACCEL_QW(self);
1411                 float wishspeed0 = wishspeed;
1412                 wishspeed = min(wishspeed, maxairspd);
1413                 if (IS_DUCKED(self))
1414                         wishspeed *= 0.5;
1415                 float airaccel = PHYS_AIRACCELERATE * min(maxspd_mod, 1);
1416
1417                 float accelerating = (self.velocity * wishdir > 0);
1418                 float wishspeed2 = wishspeed;
1419
1420                 // CPM: air control
1421                 if (PHYS_AIRSTOPACCELERATE)
1422                 {
1423                         vector curdir = normalize(vec2(self.velocity));
1424                         airaccel += (PHYS_AIRSTOPACCELERATE*maxspd_mod - airaccel) * max(0, -(curdir * wishdir));
1425                 }
1426                 // note that for straight forward jumping:
1427                 // step = accel * PHYS_INPUT_TIMELENGTH * wishspeed0;
1428                 // accel  = bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
1429                 // -->
1430                 // dv/dt = accel * maxspeed (when slow)
1431                 // dv/dt = accel * maxspeed * (1 - accelqw) (when fast)
1432                 // log dv/dt = logaccel + logmaxspeed (when slow)
1433                 // log dv/dt = logaccel + logmaxspeed + log(1 - accelqw) (when fast)
1434                 float strafity = IsMoveInDirection(PHYS_INPUT_MOVEVALUES(self), -90) + IsMoveInDirection(PHYS_INPUT_MOVEVALUES(self), +90); // if one is nonzero, other is always zero
1435                 if (PHYS_MAXAIRSTRAFESPEED)
1436                         wishspeed = min(wishspeed, GeomLerp(PHYS_MAXAIRSPEED*maxspd_mod, strafity, PHYS_MAXAIRSTRAFESPEED*maxspd_mod));
1437                 if (PHYS_AIRSTRAFEACCELERATE)
1438                         airaccel = GeomLerp(airaccel, strafity, PHYS_AIRSTRAFEACCELERATE*maxspd_mod);
1439                 if (PHYS_AIRSTRAFEACCEL_QW(self))
1440                         airaccelqw =
1441                 (((strafity > 0.5 ? PHYS_AIRSTRAFEACCEL_QW(self) : PHYS_AIRACCEL_QW(self)) >= 0) ? +1 : -1)
1442                 *
1443                 (1 - GeomLerp(1 - fabs(PHYS_AIRACCEL_QW(self)), strafity, 1 - fabs(PHYS_AIRSTRAFEACCEL_QW(self))));
1444                 // !CPM
1445
1446                 if (PHYS_WARSOWBUNNY_TURNACCEL && accelerating && PHYS_INPUT_MOVEVALUES(self).y == 0 && PHYS_INPUT_MOVEVALUES(self).x != 0)
1447                         PM_AirAccelerate(wishdir, wishspeed2);
1448                 else
1449                         PM_Accelerate(wishdir, wishspeed, wishspeed0, airaccel, airaccelqw, PHYS_AIRACCEL_QW_STRETCHFACTOR(self), PHYS_AIRACCEL_SIDEWAYS_FRICTION / maxairspd, PHYS_AIRSPEEDLIMIT_NONQW(self));
1450
1451                 if (PHYS_AIRCONTROL)
1452                         CPM_PM_Aircontrol(wishdir, wishspeed2);
1453         }
1454         float g = PHYS_GRAVITY * PHYS_ENTGRAVITY(self) * PHYS_INPUT_TIMELENGTH;
1455         if (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
1456                 self.velocity_z -= g * 0.5;
1457         else
1458                 self.velocity_z -= g;
1459         PM_ClientMovement_Move();
1460         if (!IS_ONGROUND(self) || !(GAMEPLAYFIX_NOGRAVITYONGROUND))
1461                 if (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
1462                         self.velocity_z -= g * 0.5;
1463 }
1464
1465 // used for calculating airshots
1466 float PM_is_flying()
1467 {
1468         if (IS_ONGROUND(self))
1469                 return 0;
1470         if (self.waterlevel >= WATERLEVEL_SWIMMING)
1471                 return 0;
1472         traceline(self.origin, self.origin - '0 0 48', MOVE_NORMAL, self);
1473         return trace_fraction >= 1;
1474 }
1475
1476 void PM_Main()
1477 {
1478         float buttons = PHYS_INPUT_BUTTON_MASK(self);
1479 #ifdef CSQC
1480         //Con_Printf(" %f", PHYS_INPUT_TIMELENGTH);
1481         if (!(PHYS_INPUT_BUTTON_JUMP(self))) // !jump
1482                 UNSET_JUMP_HELD(self); // canjump = true
1483         pmove_waterjumptime -= PHYS_INPUT_TIMELENGTH;
1484         PM_ClientMovement_UpdateStatus();
1485 #endif
1486
1487 #ifdef SVQC
1488         WarpZone_PlayerPhysics_FixVAngle();
1489 #endif
1490         float maxspeed_mod = 1;
1491         maxspeed_mod *= PM_check_keepaway();
1492         maxspeed_mod *= PHYS_HIGHSPEED;
1493
1494 #ifdef SVQC
1495         Physics_UpdateStats(maxspeed_mod);
1496
1497         if (self.PlayerPhysplug)
1498                 if (self.PlayerPhysplug())
1499                         return;
1500 #endif
1501
1502         PM_check_race_movetime();
1503 #ifdef SVQC
1504         anticheat_physics();
1505 #endif
1506
1507         if (PM_check_specialcommand(buttons))
1508                 return;
1509 #ifdef SVQC
1510         if (sv_maxidle > 0)
1511         {
1512                 if (buttons != self.buttons_old || PHYS_INPUT_MOVEVALUES(self) != self.movement_old || PHYS_INPUT_ANGLES(self) != self.v_angle_old)
1513                         self.parm_idlesince = time;
1514         }
1515 #endif
1516         float buttons_prev = self.buttons_old;
1517         self.buttons_old = buttons;
1518         self.movement_old = PHYS_INPUT_MOVEVALUES(self);
1519         self.v_angle_old = PHYS_INPUT_ANGLES(self);
1520
1521         PM_check_nickspam();
1522
1523         PM_check_punch();
1524 #ifdef SVQC
1525         if (IS_BOT_CLIENT(self))
1526         {
1527                 if (playerdemo_read())
1528                         return;
1529                 bot_think();
1530         }
1531
1532         self.items &= ~IT_USING_JETPACK;
1533
1534         if (IS_PLAYER(self))
1535 #endif
1536         {
1537 #ifdef SVQC
1538                 if (self.race_penalty)
1539                         if (time > self.race_penalty)
1540                                 self.race_penalty = 0;
1541 #endif
1542
1543                 float not_allowed_to_move = 0;
1544 #ifdef SVQC
1545                 if (self.race_penalty)
1546                         not_allowed_to_move = 1;
1547 #endif
1548 #ifdef SVQC
1549                 if (!autocvar_sv_ready_restart_after_countdown)
1550                         if (time < game_starttime)
1551                                 not_allowed_to_move = 1;
1552 #endif
1553
1554                 if (not_allowed_to_move)
1555                 {
1556                         self.velocity = '0 0 0';
1557                         self.movetype = MOVETYPE_NONE;
1558 #ifdef SVQC
1559                         self.disableclientprediction = 2;
1560 #endif
1561                 }
1562 #ifdef SVQC
1563                 else if (self.disableclientprediction == 2)
1564                 {
1565                         if (self.movetype == MOVETYPE_NONE)
1566                                 self.movetype = MOVETYPE_WALK;
1567                         self.disableclientprediction = 0;
1568                 }
1569 #endif
1570         }
1571
1572 #ifdef SVQC
1573         if (self.movetype == MOVETYPE_NONE)
1574                 return;
1575
1576         // when we get here, disableclientprediction cannot be 2
1577         self.disableclientprediction = 0;
1578 #endif
1579
1580         PM_check_spider();
1581
1582         PM_check_frozen();
1583
1584         PM_check_blocked();
1585
1586         maxspeed_mod = 1;
1587
1588 #ifdef SVQC
1589         if (self.in_swamp) {
1590                 maxspeed_mod *= self.swamp_slowdown; //cvar("g_balance_swamp_moverate");
1591         }
1592 #endif
1593
1594 #ifdef SVQC
1595         // conveyors: first fix velocity
1596         if (self.conveyor.state)
1597                 self.velocity -= self.conveyor.movedir;
1598 #endif
1599
1600 #ifdef SVQC
1601         MUTATOR_CALLHOOK(PlayerPhysics);
1602 #endif
1603 //      float forcedodge = 1;
1604 //      if(forcedodge) {
1605 //#ifdef CSQC
1606 //              PM_dodging_checkpressedkeys();
1607 //#endif
1608 //              PM_dodging();
1609 //              PM_ClientMovement_Move();
1610 //              return;
1611 //      }
1612
1613 #ifdef SVQC
1614         if (!IS_PLAYER(self))
1615         {
1616                 maxspeed_mod *= autocvar_sv_spectator_speed_multiplier;
1617                 if (!self.spectatorspeed)
1618                         self.spectatorspeed = maxspeed_mod;
1619                 if (self.impulse && self.impulse <= 19 || (self.impulse >= 200 && self.impulse <= 209) || (self.impulse >= 220 && self.impulse <= 229))
1620                 {
1621                         if (self.lastclassname != "player")
1622                         {
1623                                 if (self.impulse == 10 || self.impulse == 15 || self.impulse == 18 || (self.impulse >= 200 && self.impulse <= 209))
1624                                         self.spectatorspeed = bound(1, self.spectatorspeed + 0.5, 5);
1625                                 else if (self.impulse == 11)
1626                                         self.spectatorspeed = maxspeed_mod;
1627                                 else if (self.impulse == 12 || self.impulse == 16  || self.impulse == 19 || (self.impulse >= 220 && self.impulse <= 229))
1628                                         self.spectatorspeed = bound(1, self.spectatorspeed - 0.5, 5);
1629                                 else if (self.impulse >= 1 && self.impulse <= 9)
1630                                         self.spectatorspeed = 1 + 0.5 * (self.impulse - 1);
1631                         } // otherwise just clear
1632                         self.impulse = 0;
1633                 }
1634                 maxspeed_mod *= self.spectatorspeed;
1635         }
1636 #endif
1637
1638 #ifdef SVQC
1639         // if dead, behave differently
1640         // in CSQC, physics don't handle dead player
1641         if (self.deadflag)
1642                 goto end;
1643 #endif
1644
1645 #ifdef SVQC
1646         if (!self.fixangle && !g_bugrigs)
1647                 self.angles = '0 1 0' * PHYS_INPUT_ANGLES(self).y;
1648 #endif
1649
1650 #ifdef SVQC
1651         if (IS_ONGROUND(self))
1652         if (IS_PLAYER(self)) // no fall sounds for observers thank you very much
1653         if (self.wasFlying)
1654         {
1655                 self.wasFlying = 0;
1656                 if (self.waterlevel < WATERLEVEL_SWIMMING)
1657                 if (time >= self.ladder_time)
1658                 if (!self.hook)
1659                 {
1660                         self.nextstep = time + 0.3 + random() * 0.1;
1661                         trace_dphitq3surfaceflags = 0;
1662                         tracebox(self.origin, self.mins, self.maxs, self.origin - '0 0 1', MOVE_NOMONSTERS, self);
1663                         if (!(trace_dphitq3surfaceflags & Q3SURFACEFLAG_NOSTEPS))
1664                         {
1665                                 if (trace_dphitq3surfaceflags & Q3SURFACEFLAG_METALSTEPS)
1666                                         GlobalSound(globalsound_metalfall, CH_PLAYER, VOICETYPE_PLAYERSOUND);
1667                                 else
1668                                         GlobalSound(globalsound_fall, CH_PLAYER, VOICETYPE_PLAYERSOUND);
1669                         }
1670                 }
1671         }
1672 #endif
1673
1674         if (PM_is_flying())
1675                 self.wasFlying = 1;
1676
1677 #ifdef SVQC
1678         if (IS_PLAYER(self))
1679 #endif
1680                 CheckPlayerJump();
1681
1682
1683         if (self.flags & /* FL_WATERJUMP */ 2048)
1684         {
1685                 self.velocity_x = self.movedir_x;
1686                 self.velocity_y = self.movedir_y;
1687                 if (time > self.teleport_time || self.waterlevel == WATERLEVEL_NONE)
1688                 {
1689                         self.flags &= ~/* FL_WATERJUMP */ 2048;
1690                         self.teleport_time = 0;
1691                 }
1692         }
1693
1694 #ifdef SVQC
1695         else if (g_bugrigs && IS_PLAYER(self))
1696                 RaceCarPhysics();
1697 #endif
1698
1699         else if (self.movetype == MOVETYPE_NOCLIP || self.movetype == MOVETYPE_FLY || self.movetype == MOVETYPE_FLY_WORLDONLY)
1700                 PM_fly(maxspeed_mod);
1701
1702         else if (self.waterlevel >= WATERLEVEL_SWIMMING)
1703                 PM_swim(maxspeed_mod);
1704
1705         else if (time < self.ladder_time)
1706                 PM_ladder(maxspeed_mod);
1707
1708         else if ((ITEMS(self) & IT_JETPACK) && PHYS_INPUT_BUTTON_HOOK(self) && (!PHYS_JETPACK_FUEL || PHYS_AMMO_FUEL(self) > 0 || (ITEMS(self) & IT_UNLIMITED_WEAPON_AMMO)) && !PHYS_FROZEN(self))
1709                 PM_jetpack(maxspeed_mod);
1710
1711         else
1712         {
1713 #ifdef CSQC
1714                 // jump if on ground with jump button pressed but only if it has been
1715                 // released at least once since the last jump
1716                 if (PHYS_INPUT_BUTTON_JUMP(self))
1717                 {
1718                         if (IS_ONGROUND(self) && (!IS_JUMP_HELD(self) || !cvar("cl_movement_track_canjump")))
1719                         {
1720                                 self.velocity_z += PHYS_JUMPVELOCITY;
1721                                 UNSET_ONGROUND(self);
1722                                 SET_JUMP_HELD(self); // canjump = false
1723                         }
1724                 }
1725                 else
1726                         UNSET_JUMP_HELD(self); // canjump = true
1727 #endif
1728                 if (IS_ONGROUND(self))
1729                         PM_walk(buttons_prev, maxspeed_mod);
1730                 else
1731                         PM_air(buttons_prev, maxspeed_mod);
1732         }
1733
1734 #ifdef SVQC
1735         if (!IS_OBSERVER(self))
1736                 PM_check_race();
1737 #endif
1738         PM_check_vortex();
1739
1740 :end
1741         if (IS_ONGROUND(self))
1742                 self.lastground = time;
1743
1744 #ifdef SVQC
1745         // conveyors: then break velocity again
1746         if (self.conveyor.state)
1747                 self.velocity += self.conveyor.movedir;
1748 #endif
1749         self.lastflags = self.flags;
1750         self.lastclassname = self.classname;
1751 }
1752
1753 void CSQC_ClientMovement_PlayerMove_Frame()
1754 {
1755         // if a move is more than 50ms, do it as two moves (matching qwsv)
1756         //Con_Printf("%i ", self.cmd.msec);
1757         if (PHYS_INPUT_TIMELENGTH > 0.0005)
1758         {
1759                 if (PHYS_INPUT_TIMELENGTH > 0.05)
1760                 {
1761                         PHYS_INPUT_TIMELENGTH /= 2;
1762                         PM_Main();
1763                 }
1764                 PM_Main();
1765         }
1766         else
1767                 // we REALLY need this handling to happen, even if the move is not executed
1768                 if (!(PHYS_INPUT_BUTTON_JUMP(self))) // !jump
1769                         UNSET_JUMP_HELD(self); // canjump = true
1770 }
1771
1772 #ifdef SVQC
1773 // Entry point
1774 void SV_PlayerPhysics(void)
1775 {
1776         PM_Main();
1777 }
1778 #endif