view.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // view.c -- player eye positioning
  21
  22 #include "quakedef.h"
  23 #include "cl_collision.h"
  24
  25 void CL_VM_UpdateDmgGlobals (int dmg_take, int dmg_save, vec3_t dmg_origin);
  26
  27 /*
  28
  29 The view is allowed to move slightly from it's true position for bobbing,
  30 but if it exceeds 8 pixels linear distance (spherical, not box), the list of
  31 entities sent from the server may not include everything in the pvs, especially
  32 when crossing a water boudnary.
  33
  34 */
  35
  36 cvar_t cl_rollspeed = {0, "cl_rollspeed", "200", "how much strafing is necessary to tilt the view"};
  37 cvar_t cl_rollangle = {0, "cl_rollangle", "2.0", "how much to tilt the view when strafing"};
  38
  39 cvar_t cl_bob = {CVAR_SAVE, "cl_bob","0.02", "view bobbing amount"};
  40 cvar_t cl_bobcycle = {CVAR_SAVE, "cl_bobcycle","0.6", "view bobbing speed"};
  41 cvar_t cl_bobup = {CVAR_SAVE, "cl_bobup","0.5", "view bobbing adjustment that makes the up or down swing of the bob last longer"};
  42 cvar_t cl_bobside = {CVAR_SAVE, "cl_bobside","0", "sideway view bobbing amount"};
  43 cvar_t cl_bobsidecycle = {CVAR_SAVE, "cl_bobsidecycle","0.6", "sideway view bobbing speed"};
  44 cvar_t cl_bobsideup = {CVAR_SAVE, "cl_bobsideup","0.5", "view bobbing adjustment that makes the side swing of the bob last longer"};
  45 cvar_t cl_bobsideairtime = {CVAR_SAVE, "cl_bobsideairtime","0.05", "how fast the view goes back when you stop touching the ground"};
  46 cvar_t cl_bobroll = {CVAR_SAVE, "cl_bobroll","0", "view rolling amount"};
  47 cvar_t cl_bobrollcycle = {CVAR_SAVE, "cl_bobrollcycle","0.8", "view rolling speed"};
  48 cvar_t cl_bobrollairtime = {CVAR_SAVE, "cl_bobrollairtime","0.05", "how fast the view rolls back when you stop touching the ground"};
  49 cvar_t cl_bobmodel = {CVAR_SAVE, "cl_bobmodel", "1", "enables gun bobbing"};
  50 cvar_t cl_bobmodel_side = {CVAR_SAVE, "cl_bobmodel_side", "0.15", "gun bobbing sideways sway amount"};
  51 cvar_t cl_bobmodel_up = {CVAR_SAVE, "cl_bobmodel_up", "0.06", "gun bobbing upward movement amount"};
  52 cvar_t cl_bobmodel_speed = {CVAR_SAVE, "cl_bobmodel_speed", "7", "gun bobbing speed"};
  53 cvar_t cl_leanmodel = {CVAR_SAVE, "cl_leanmodel", "0", "enables gun leaning"};
  54 cvar_t cl_leanmodel_side_speed = {CVAR_SAVE, "cl_leanmodel_side_speed", "0.7", "gun leaning sideways speed"};
  55 cvar_t cl_leanmodel_side_limit = {CVAR_SAVE, "cl_leanmodel_side_limit", "35", "gun leaning sideways limit"};
  56 cvar_t cl_leanmodel_side_highpass1 = {CVAR_SAVE, "cl_leanmodel_side_highpass1", "30", "gun leaning sideways pre-highpass in 1/s"};
  57 cvar_t cl_leanmodel_side_highpass = {CVAR_SAVE, "cl_leanmodel_side_highpass", "5", "gun leaning sideways highpass in 1/s"};
  58 cvar_t cl_leanmodel_side_lowpass = {CVAR_SAVE, "cl_leanmodel_side_lowpass", "30", "gun leaning sideways lowpass in 1/s"};
  59 cvar_t cl_leanmodel_up_speed = {CVAR_SAVE, "cl_leanmodel_up_speed", "0.65", "gun leaning upward speed"};
  60 cvar_t cl_leanmodel_up_limit = {CVAR_SAVE, "cl_leanmodel_up_limit", "50", "gun leaning upward limit"};
  61 cvar_t cl_leanmodel_up_highpass1 = {CVAR_SAVE, "cl_leanmodel_up_highpass1", "5", "gun leaning upward pre-highpass in 1/s"};
  62 cvar_t cl_leanmodel_up_highpass = {CVAR_SAVE, "cl_leanmodel_up_highpass", "15", "gun leaning upward highpass in 1/s"};
  63 cvar_t cl_leanmodel_up_lowpass = {CVAR_SAVE, "cl_leanmodel_up_lowpass", "30", "gun leaning upward lowpass in 1/s"};
  64
  65 cvar_t cl_followmodel = {CVAR_SAVE, "cl_followmodel", "0", "enables gun following"};
  66 cvar_t cl_followmodel_side_speed = {CVAR_SAVE, "cl_followmodel_side_speed", "0.25", "gun following sideways speed"};
  67 cvar_t cl_followmodel_side_limit = {CVAR_SAVE, "cl_followmodel_side_limit", "6", "gun following sideways limit"};
  68 cvar_t cl_followmodel_side_highpass1 = {CVAR_SAVE, "cl_followmodel_side_highpass1", "30", "gun following sideways pre-highpass in 1/s"};
  69 cvar_t cl_followmodel_side_highpass = {CVAR_SAVE, "cl_followmodel_side_highpass", "5", "gun following sideways highpass in 1/s"};
  70 cvar_t cl_followmodel_side_lowpass = {CVAR_SAVE, "cl_followmodel_side_lowpass", "30", "gun following sideways lowpass in 1/s"};
  71 cvar_t cl_followmodel_up_speed = {CVAR_SAVE, "cl_followmodel_up_speed", "0.5", "gun following upward speed"};
  72 cvar_t cl_followmodel_up_limit = {CVAR_SAVE, "cl_followmodel_up_limit", "5", "gun following upward limit"};
  73 cvar_t cl_followmodel_up_highpass1 = {CVAR_SAVE, "cl_followmodel_up_highpass1", "60", "gun following upward pre-highpass in 1/s"};
  74 cvar_t cl_followmodel_up_highpass = {CVAR_SAVE, "cl_followmodel_up_highpass", "3", "gun following upward highpass in 1/s"};
  75 cvar_t cl_followmodel_up_lowpass = {CVAR_SAVE, "cl_followmodel_up_lowpass", "30", "gun following upward lowpass in 1/s"};
  76
  77 cvar_t cl_viewmodel_scale = {0, "cl_viewmodel_scale", "1", "changes size of gun model, lower values prevent poking into walls but cause strange artifacts on lighting and especially r_stereo/vid_stereobuffer options where the size of the gun becomes visible"};
  78
  79 cvar_t v_kicktime = {0, "v_kicktime", "0.5", "how long a view kick from damage lasts"};
  80 cvar_t v_kickroll = {0, "v_kickroll", "0.6", "how much a view kick from damage rolls your view"};
  81 cvar_t v_kickpitch = {0, "v_kickpitch", "0.6", "how much a view kick from damage pitches your view"};
  82
  83 cvar_t v_iyaw_cycle = {0, "v_iyaw_cycle", "2", "v_idlescale yaw speed"};
  84 cvar_t v_iroll_cycle = {0, "v_iroll_cycle", "0.5", "v_idlescale roll speed"};
  85 cvar_t v_ipitch_cycle = {0, "v_ipitch_cycle", "1", "v_idlescale pitch speed"};
  86 cvar_t v_iyaw_level = {0, "v_iyaw_level", "0.3", "v_idlescale yaw amount"};
  87 cvar_t v_iroll_level = {0, "v_iroll_level", "0.1", "v_idlescale roll amount"};
  88 cvar_t v_ipitch_level = {0, "v_ipitch_level", "0.3", "v_idlescale pitch amount"};
  89
  90 cvar_t v_idlescale = {0, "v_idlescale", "0", "how much of the quake 'drunken view' effect to use"};
  91
  92 cvar_t crosshair = {CVAR_SAVE, "crosshair", "0", "selects crosshair to use (0 is none)"};
  93
  94 cvar_t v_centermove = {0, "v_centermove", "0.15", "how long before the view begins to center itself (if freelook/+mlook/+jlook/+klook are off)"};
  95 cvar_t v_centerspeed = {0, "v_centerspeed","500", "how fast the view centers itself"};
  96
  97 cvar_t cl_stairsmoothspeed = {CVAR_SAVE, "cl_stairsmoothspeed", "160", "how fast your view moves upward/downward when running up/down stairs"};
  98
  99 cvar_t chase_back = {CVAR_SAVE, "chase_back", "48", "chase cam distance from the player"};
 100 cvar_t chase_up = {CVAR_SAVE, "chase_up", "24", "chase cam distance from the player"};
 101 cvar_t chase_active = {CVAR_SAVE, "chase_active", "0", "enables chase cam"};
 102 cvar_t chase_overhead = {CVAR_SAVE, "chase_overhead", "0", "chase cam looks straight down if this is not zero"};
 103 // GAME_GOODVSBAD2
 104 cvar_t chase_stevie = {0, "chase_stevie", "0", "chase cam view from above (used only by GoodVsBad2)"};
 105
 106 cvar_t v_deathtilt = {0, "v_deathtilt", "1", "whether to use sideways view when dead"};
 107 cvar_t v_deathtiltangle = {0, "v_deathtiltangle", "80", "what roll angle to use when tilting the view while dead"};
 108
 109 // Prophecy camera pitchangle by Alexander "motorsep" Zubov
 110 cvar_t chase_pitchangle = {CVAR_SAVE, "chase_pitchangle", "55", "chase cam pitch angle"};
 111
 112 float   v_dmg_time, v_dmg_roll, v_dmg_pitch;
 113
 114
 115 /*
 116 ===============
 117 V_CalcRoll
 118
 119 Used by view and sv_user
 120 ===============
 121 */
 122 float V_CalcRoll (vec3_t angles, vec3_t velocity)
 123 {
 124         vec3_t  right;
 125         float   sign;
 126         float   side;
 127         float   value;
 128
 129         AngleVectors (angles, NULL, right, NULL);
 130         side = DotProduct (velocity, right);
 131         sign = side < 0 ? -1 : 1;
 132         side = fabs(side);
 133
 134         value = cl_rollangle.value;
 135
 136         if (side < cl_rollspeed.value)
 137                 side = side * value / cl_rollspeed.value;
 138         else
 139                 side = value;
 140
 141         return side*sign;
 142
 143 }
 144
 145 void V_StartPitchDrift (void)
 146 {
 147         if (cl.laststop == cl.time)
 148                 return;         // something else is keeping it from drifting
 149
 150         if (cl.nodrift || !cl.pitchvel)
 151         {
 152                 cl.pitchvel = v_centerspeed.value;
 153                 cl.nodrift = false;
 154                 cl.driftmove = 0;
 155         }
 156 }
 157
 158 void V_StopPitchDrift (void)
 159 {
 160         cl.laststop = cl.time;
 161         cl.nodrift = true;
 162         cl.pitchvel = 0;
 163 }
 164
 165 /*
 166 ===============
 167 V_DriftPitch
 168
 169 Moves the client pitch angle towards cl.idealpitch sent by the server.
 170
 171 If the user is adjusting pitch manually, either with lookup/lookdown,
 172 mlook and mouse, or klook and keyboard, pitch drifting is constantly stopped.
 173
 174 Drifting is enabled when the center view key is hit, mlook is released and
 175 lookspring is non 0, or when
 176 ===============
 177 */
 178 void V_DriftPitch (void)
 179 {
 180         float           delta, move;
 181
 182         if (noclip_anglehack || !cl.onground || cls.demoplayback )
 183         {
 184                 cl.driftmove = 0;
 185                 cl.pitchvel = 0;
 186                 return;
 187         }
 188
 189 // don't count small mouse motion
 190         if (cl.nodrift)
 191         {
 192                 if ( fabs(cl.cmd.forwardmove) < cl_forwardspeed.value)
 193                         cl.driftmove = 0;
 194                 else
 195                         cl.driftmove += cl.realframetime;
 196
 197                 if ( cl.driftmove > v_centermove.value)
 198                 {
 199                         V_StartPitchDrift ();
 200                 }
 201                 return;
 202         }
 203
 204         delta = cl.idealpitch - cl.viewangles[PITCH];
 205
 206         if (!delta)
 207         {
 208                 cl.pitchvel = 0;
 209                 return;
 210         }
 211
 212         move = cl.realframetime * cl.pitchvel;
 213         cl.pitchvel += cl.realframetime * v_centerspeed.value;
 214
 215         if (delta > 0)
 216         {
 217                 if (move > delta)
 218                 {
 219                         cl.pitchvel = 0;
 220                         move = delta;
 221                 }
 222                 cl.viewangles[PITCH] += move;
 223         }
 224         else if (delta < 0)
 225         {
 226                 if (move > -delta)
 227                 {
 228                         cl.pitchvel = 0;
 229                         move = -delta;
 230                 }
 231                 cl.viewangles[PITCH] -= move;
 232         }
 233 }
 234
 235
 236 /*
 237 ==============================================================================
 238
 239                                                 SCREEN FLASHES
 240
 241 ==============================================================================
 242 */
 243
 244
 245 /*
 246 ===============
 247 V_ParseDamage
 248 ===============
 249 */
 250 void V_ParseDamage (void)
 251 {
 252         int armor, blood;
 253         vec3_t from;
 254         //vec3_t forward, right;
 255         vec3_t localfrom;
 256         entity_t *ent;
 257         //float side;
 258         float count;
 259
 260         armor = MSG_ReadByte ();
 261         blood = MSG_ReadByte ();
 262         MSG_ReadVector(from, cls.protocol);
 263
 264         // Send the Dmg Globals to CSQC
 265         CL_VM_UpdateDmgGlobals(blood, armor, from);
 266
 267         count = blood*0.5 + armor*0.5;
 268         if (count < 10)
 269                 count = 10;
 270
 271         cl.faceanimtime = cl.time + 0.2;                // put sbar face into pain frame
 272
 273         cl.cshifts[CSHIFT_DAMAGE].percent += 3*count;
 274         cl.cshifts[CSHIFT_DAMAGE].alphafade = 150;
 275         if (cl.cshifts[CSHIFT_DAMAGE].percent < 0)
 276                 cl.cshifts[CSHIFT_DAMAGE].percent = 0;
 277         if (cl.cshifts[CSHIFT_DAMAGE].percent > 150)
 278                 cl.cshifts[CSHIFT_DAMAGE].percent = 150;
 279
 280         if (armor > blood)
 281         {
 282                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 200;
 283                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 100;
 284                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 100;
 285         }
 286         else if (armor)
 287         {
 288                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 220;
 289                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 50;
 290                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 50;
 291         }
 292         else
 293         {
 294                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 255;
 295                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 0;
 296                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 0;
 297         }
 298
 299         // calculate view angle kicks
 300         if (cl.entities[cl.viewentity].state_current.active)
 301         {
 302                 ent = &cl.entities[cl.viewentity];
 303                 Matrix4x4_Transform(&ent->render.inversematrix, from, localfrom);
 304                 VectorNormalize(localfrom);
 305                 v_dmg_pitch = count * localfrom[0] * v_kickpitch.value;
 306                 v_dmg_roll = count * localfrom[1] * v_kickroll.value;
 307                 v_dmg_time = v_kicktime.value;
 308         }
 309 }
 310
 311 static cshift_t v_cshift;
 312
 313 /*
 314 ==================
 315 V_cshift_f
 316 ==================
 317 */
 318 static void V_cshift_f (void)
 319 {
 320         v_cshift.destcolor[0] = atof(Cmd_Argv(1));
 321         v_cshift.destcolor[1] = atof(Cmd_Argv(2));
 322         v_cshift.destcolor[2] = atof(Cmd_Argv(3));
 323         v_cshift.percent = atof(Cmd_Argv(4));
 324 }
 325
 326
 327 /*
 328 ==================
 329 V_BonusFlash_f
 330
 331 When you run over an item, the server sends this command
 332 ==================
 333 */
 334 static void V_BonusFlash_f (void)
 335 {
 336         if(Cmd_Argc() == 1)
 337         {
 338                 cl.cshifts[CSHIFT_BONUS].destcolor[0] = 215;
 339                 cl.cshifts[CSHIFT_BONUS].destcolor[1] = 186;
 340                 cl.cshifts[CSHIFT_BONUS].destcolor[2] = 69;
 341                 cl.cshifts[CSHIFT_BONUS].percent = 50;
 342                 cl.cshifts[CSHIFT_BONUS].alphafade = 100;
 343         }
 344         else if(Cmd_Argc() >= 4 && Cmd_Argc() <= 6)
 345         {
 346                 cl.cshifts[CSHIFT_BONUS].destcolor[0] = atof(Cmd_Argv(1)) * 255;
 347                 cl.cshifts[CSHIFT_BONUS].destcolor[1] = atof(Cmd_Argv(2)) * 255;
 348                 cl.cshifts[CSHIFT_BONUS].destcolor[2] = atof(Cmd_Argv(3)) * 255;
 349                 if(Cmd_Argc() >= 5)
 350                         cl.cshifts[CSHIFT_BONUS].percent = atof(Cmd_Argv(4)) * 255; // yes, these are HEXADECIMAL percent ;)
 351                 else
 352                         cl.cshifts[CSHIFT_BONUS].percent = 50;
 353                 if(Cmd_Argc() >= 6)
 354                         cl.cshifts[CSHIFT_BONUS].alphafade = atof(Cmd_Argv(5)) * 255;
 355                 else
 356                         cl.cshifts[CSHIFT_BONUS].alphafade = 100;
 357         }
 358         else
 359                 Con_Printf("usage:\nbf, or bf R G B [A [alphafade]]\n");
 360 }
 361
 362 /*
 363 ==============================================================================
 364
 365                                                 VIEW RENDERING
 366
 367 ==============================================================================
 368 */
 369
 370 extern matrix4x4_t viewmodelmatrix;
 371
 372 #include "cl_collision.h"
 373 #include "csprogs.h"
 374
 375 /*
 376 ==================
 377 V_CalcRefdef
 378
 379 ==================
 380 */
 381 #if 0
 382 static vec3_t eyeboxmins = {-16, -16, -24};
 383 static vec3_t eyeboxmaxs = { 16,  16,  32};
 384 #endif
 385
 386 static vec_t lowpass(vec_t value, vec_t frac, vec_t *store)
 387 {
 388         frac = bound(0, frac, 1);
 389         return (*store = *store * (1 - frac) + value * frac);
 390 }
 391
 392 static vec_t lowpass_limited(vec_t value, vec_t frac, vec_t limit, vec_t *store)
 393 {
 394         lowpass(value, frac, store);
 395         return (*store = bound(value - limit, *store, value + limit));
 396 }
 397
 398 static vec_t highpass(vec_t value, vec_t frac, vec_t *store)
 399 {
 400         return value - lowpass(value, frac, store);
 401 }
 402
 403 static vec_t highpass_limited(vec_t value, vec_t frac, vec_t limit, vec_t *store)
 404 {
 405         return value - lowpass_limited(value, frac, limit, store);
 406 }
 407
 408 static void lowpass3(vec3_t value, vec_t fracx, vec_t fracy, vec_t fracz, vec3_t store, vec3_t out)
 409 {
 410         out[0] = lowpass(value[0], fracx, &store[0]);
 411         out[1] = lowpass(value[1], fracy, &store[1]);
 412         out[2] = lowpass(value[2], fracz, &store[2]);
 413 }
 414
 415 static void highpass3(vec3_t value, vec_t fracx, vec_t fracy, vec_t fracz, vec3_t store, vec3_t out)
 416 {
 417         out[0] = highpass(value[0], fracx, &store[0]);
 418         out[1] = highpass(value[1], fracy, &store[1]);
 419         out[2] = highpass(value[2], fracz, &store[2]);
 420 }
 421
 422 static void highpass3_limited(vec3_t value, vec_t fracx, vec_t limitx, vec_t fracy, vec_t limity, vec_t fracz, vec_t limitz, vec3_t store, vec3_t out)
 423 {
 424         out[0] = highpass_limited(value[0], fracx, limitx, &store[0]);
 425         out[1] = highpass_limited(value[1], fracy, limity, &store[1]);
 426         out[2] = highpass_limited(value[2], fracz, limitz, &store[2]);
 427 }
 428
 429 void V_CalcRefdef (void)
 430 {
 431         entity_t *ent;
 432         float vieworg[3], viewangles[3], smoothtime;
 433         float gunorg[3], gunangles[3];
 434 #if 0
 435 // begin of chase camera bounding box size for proper collisions by Alexander Zubov
 436         vec3_t camboxmins = {-3, -3, -3};
 437         vec3_t camboxmaxs = {3, 3, 3};
 438 // end of chase camera bounding box size for proper collisions by Alexander Zubov
 439 #endif
 440         trace_t trace;
 441         VectorClear(gunorg);
 442         viewmodelmatrix = identitymatrix;
 443         r_refdef.view.matrix = identitymatrix;
 444         if (cls.state == ca_connected && cls.signon == SIGNONS)
 445         {
 446                 // ent is the view entity (visible when out of body)
 447                 ent = &cl.entities[cl.viewentity];
 448                 // player can look around, so take the origin from the entity,
 449                 // and the angles from the input system
 450                 Matrix4x4_OriginFromMatrix(&ent->render.matrix, vieworg);
 451                 VectorCopy(cl.viewangles, viewangles);
 452
 453                 // calculate how much time has passed since the last V_CalcRefdef
 454                 smoothtime = bound(0, cl.time - cl.stairsmoothtime, 0.1);
 455                 cl.stairsmoothtime = cl.time;
 456
 457                 // fade damage flash
 458                 if (v_dmg_time > 0)
 459                         v_dmg_time -= bound(0, smoothtime, 0.1);
 460
 461                 if (cl.intermission)
 462                 {
 463                         // entity is a fixed camera, just copy the matrix
 464                         if (cls.protocol == PROTOCOL_QUAKEWORLD)
 465                                 Matrix4x4_CreateFromQuakeEntity(&r_refdef.view.matrix, cl.qw_intermission_origin[0], cl.qw_intermission_origin[1], cl.qw_intermission_origin[2], cl.qw_intermission_angles[0], cl.qw_intermission_angles[1], cl.qw_intermission_angles[2], 1);
 466                         else
 467                         {
 468                                 r_refdef.view.matrix = ent->render.matrix;
 469                                 Matrix4x4_AdjustOrigin(&r_refdef.view.matrix, 0, 0, cl.stats[STAT_VIEWHEIGHT]);
 470                         }
 471                         viewmodelmatrix = r_refdef.view.matrix;
 472                 }
 473                 else
 474                 {
 475                         // smooth stair stepping, but only if onground and enabled
 476                         if (!cl.onground || cl_stairsmoothspeed.value <= 0 || !ent->persistent.trail_allowed) // FIXME use a better way to detect teleport/warp
 477                                 cl.stairsmoothz = vieworg[2];
 478                         else
 479                         {
 480                                 if (cl.stairsmoothz < vieworg[2])
 481                                         vieworg[2] = cl.stairsmoothz = bound(vieworg[2] - 16, cl.stairsmoothz + smoothtime * cl_stairsmoothspeed.value, vieworg[2]);
 482                                 else if (cl.stairsmoothz > vieworg[2])
 483                                         vieworg[2] = cl.stairsmoothz = bound(vieworg[2], cl.stairsmoothz - smoothtime * cl_stairsmoothspeed.value, vieworg[2] + 16);
 484                         }
 485
 486                         // apply qw weapon recoil effect (this did not work in QW)
 487                         // TODO: add a cvar to disable this
 488                         viewangles[PITCH] += cl.qw_weaponkick;
 489
 490                         // apply the viewofs (even if chasecam is used)
 491                         vieworg[2] += cl.stats[STAT_VIEWHEIGHT];
 492
 493                         if (chase_active.value)
 494                         {
 495                                 // observing entity from third person. Added "campitch" by Alexander "motorsep" Zubov
 496                                 vec_t camback, camup, dist, campitch, forward[3], chase_dest[3];
 497
 498                                 camback = chase_back.value;
 499                                 camup = chase_up.value;
 500                                 campitch = chase_pitchangle.value;
 501
 502                                 AngleVectors(viewangles, forward, NULL, NULL);
 503
 504                                 if (chase_overhead.integer)
 505                                 {
 506 #if 1
 507                                         vec3_t offset;
 508                                         vec3_t bestvieworg;
 509 #endif
 510                                         vec3_t up;
 511                                         viewangles[PITCH] = 0;
 512                                         AngleVectors(viewangles, forward, NULL, up);
 513                                         // trace a little further so it hits a surface more consistently (to avoid 'snapping' on the edge of the range)
 514                                         chase_dest[0] = vieworg[0] - forward[0] * camback + up[0] * camup;
 515                                         chase_dest[1] = vieworg[1] - forward[1] * camback + up[1] * camup;
 516                                         chase_dest[2] = vieworg[2] - forward[2] * camback + up[2] * camup;
 517 #if 0
 518 #if 1
 519                                         //trace = CL_TraceLine(vieworg, eyeboxmins, eyeboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 520                                         trace = CL_TraceLine(vieworg, camboxmins, camboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 521 #else
 522                                         //trace = CL_TraceBox(vieworg, eyeboxmins, eyeboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 523                                         trace = CL_TraceBox(vieworg, camboxmins, camboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 524 #endif
 525                                         VectorCopy(trace.endpos, vieworg);
 526                                         vieworg[2] -= 8;
 527 #else
 528                                         // trace from first person view location to our chosen third person view location
 529 #if 1
 530                                         trace = CL_TraceLine(vieworg, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 531 #else
 532                                         trace = CL_TraceBox(vieworg, camboxmins, camboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 533 #endif
 534                                         VectorCopy(trace.endpos, bestvieworg);
 535                                         offset[2] = 0;
 536                                         for (offset[0] = -16;offset[0] <= 16;offset[0] += 8)
 537                                         {
 538                                                 for (offset[1] = -16;offset[1] <= 16;offset[1] += 8)
 539                                                 {
 540                                                         AngleVectors(viewangles, NULL, NULL, up);
 541                                                         chase_dest[0] = vieworg[0] - forward[0] * camback + up[0] * camup + offset[0];
 542                                                         chase_dest[1] = vieworg[1] - forward[1] * camback + up[1] * camup + offset[1];
 543                                                         chase_dest[2] = vieworg[2] - forward[2] * camback + up[2] * camup + offset[2];
 544 #if 1
 545                                                         trace = CL_TraceLine(vieworg, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 546 #else
 547                                                         trace = CL_TraceBox(vieworg, camboxmins, camboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 548 #endif
 549                                                         if (bestvieworg[2] > trace.endpos[2])
 550                                                                 bestvieworg[2] = trace.endpos[2];
 551                                                 }
 552                                         }
 553                                         bestvieworg[2] -= 8;
 554                                         VectorCopy(bestvieworg, vieworg);
 555 #endif
 556                                         viewangles[PITCH] = campitch;
 557                                 }
 558                                 else
 559                                 {
 560                                         if (gamemode == GAME_GOODVSBAD2 && chase_stevie.integer)
 561                                         {
 562                                                 // look straight down from high above
 563                                                 viewangles[PITCH] = 90;
 564                                                 camback = 2048;
 565                                                 VectorSet(forward, 0, 0, -1);
 566                                         }
 567
 568                                         // trace a little further so it hits a surface more consistently (to avoid 'snapping' on the edge of the range)
 569                                         dist = -camback - 8;
 570                                         chase_dest[0] = vieworg[0] + forward[0] * dist;
 571                                         chase_dest[1] = vieworg[1] + forward[1] * dist;
 572                                         chase_dest[2] = vieworg[2] + forward[2] * dist + camup;
 573                                         trace = CL_TraceLine(vieworg, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 574                                         VectorMAMAM(1, trace.endpos, 8, forward, 4, trace.plane.normal, vieworg);
 575                                 }
 576                         }
 577                         else
 578                         {
 579                                 // first person view from entity
 580                                 // angles
 581                                 if (cl.stats[STAT_HEALTH] <= 0 && v_deathtilt.integer)
 582                                         viewangles[ROLL] = v_deathtiltangle.value;
 583                                 VectorAdd(viewangles, cl.punchangle, viewangles);
 584                                 viewangles[ROLL] += V_CalcRoll(cl.viewangles, cl.velocity);
 585                                 if (v_dmg_time > 0)
 586                                 {
 587                                         viewangles[ROLL] += v_dmg_time/v_kicktime.value*v_dmg_roll;
 588                                         viewangles[PITCH] += v_dmg_time/v_kicktime.value*v_dmg_pitch;
 589                                 }
 590                                 // origin
 591                                 VectorAdd(vieworg, cl.punchvector, vieworg);
 592                                 if (cl.stats[STAT_HEALTH] > 0)
 593                                 {
 594                                         double xyspeed, bob, bobroll;
 595                                         float cycle, cycle2;
 596                                         vec_t frametime;
 597
 598                                         frametime = cl.realframetime * cl.movevars_timescale;
 599
 600                                         // 1. if we teleported, clear the frametime... the lowpass will recover the previous value then
 601                                         if(!ent->persistent.trail_allowed) // FIXME improve this check
 602                                         {
 603                                                 // try to fix the first highpass; result is NOT
 604                                                 // perfect! TODO find a better fix
 605                                                 VectorCopy(viewangles, cl.gunangles_prev);
 606                                                 VectorCopy(vieworg, cl.gunorg_prev);
 607                                         }
 608
 609                                         // 2. for the gun origin, only keep the high frequency (non-DC) parts, which is "somewhat like velocity"
 610                                         VectorAdd(cl.gunorg_highpass, cl.gunorg_prev, cl.gunorg_highpass);
 611                                         highpass3_limited(vieworg, frametime*cl_followmodel_side_highpass1.value, cl_followmodel_side_limit.value, frametime*cl_followmodel_side_highpass1.value, cl_followmodel_side_limit.value, frametime*cl_followmodel_up_highpass1.value, cl_followmodel_up_limit.value, cl.gunorg_highpass, gunorg);
 612                                         VectorCopy(vieworg, cl.gunorg_prev);
 613                                         VectorSubtract(cl.gunorg_highpass, cl.gunorg_prev, cl.gunorg_highpass);
 614
 615                                         // in the highpass, we _store_ the DIFFERENCE to the actual view angles...
 616                                         VectorAdd(cl.gunangles_highpass, cl.gunangles_prev, cl.gunangles_highpass);
 617                                         cl.gunangles_highpass[PITCH] += 360 * floor((viewangles[PITCH] - cl.gunangles_highpass[PITCH]) / 360 + 0.5);
 618                                         cl.gunangles_highpass[YAW] += 360 * floor((viewangles[YAW] - cl.gunangles_highpass[YAW]) / 360 + 0.5);
 619                                         cl.gunangles_highpass[ROLL] += 360 * floor((viewangles[ROLL] - cl.gunangles_highpass[ROLL]) / 360 + 0.5);
 620                                         highpass3_limited(viewangles, frametime*cl_leanmodel_up_highpass1.value, cl_leanmodel_up_limit.value, frametime*cl_leanmodel_side_highpass1.value, cl_leanmodel_side_limit.value, 0, 0, cl.gunangles_highpass, gunangles);
 621                                         VectorCopy(viewangles, cl.gunangles_prev);
 622                                         VectorSubtract(cl.gunangles_highpass, cl.gunangles_prev, cl.gunangles_highpass);
 623
 624                                         // 3. calculate the RAW adjustment vectors
 625                                         gunorg[0] *= (cl_followmodel.value ? -cl_followmodel_side_speed.value : 0);
 626                                         gunorg[1] *= (cl_followmodel.value ? -cl_followmodel_side_speed.value : 0);
 627                                         gunorg[2] *= (cl_followmodel.value ? -cl_followmodel_up_speed.value : 0);
 628
 629                                         gunangles[PITCH] *= (cl_leanmodel.value ? -cl_leanmodel_up_speed.value : 0);
 630                                         gunangles[YAW] *= (cl_leanmodel.value ? -cl_leanmodel_side_speed.value : 0);
 631                                         gunangles[ROLL] = 0;
 632
 633                                         // 4. perform highpass/lowpass on the adjustment vectors (turning velocity into acceleration!)
 634                                         //    trick: we must do the lowpass LAST, so the lowpass vector IS the final vector!
 635                                         highpass3(gunorg, frametime*cl_followmodel_side_highpass.value, frametime*cl_followmodel_side_highpass.value, frametime*cl_followmodel_up_highpass.value, cl.gunorg_adjustment_highpass, gunorg);
 636                                         lowpass3(gunorg, frametime*cl_followmodel_side_lowpass.value, frametime*cl_followmodel_side_lowpass.value, frametime*cl_followmodel_up_lowpass.value, cl.gunorg_adjustment_lowpass, gunorg);
 637                                         // we assume here: PITCH = 0, YAW = 1, ROLL = 2
 638                                         highpass3(gunangles, frametime*cl_leanmodel_up_highpass.value, frametime*cl_leanmodel_side_highpass.value, 0, cl.gunangles_adjustment_highpass, gunangles);
 639                                         lowpass3(gunangles, frametime*cl_leanmodel_up_lowpass.value, frametime*cl_leanmodel_side_lowpass.value, 0, cl.gunangles_adjustment_lowpass, gunangles);
 640
 641                                         // 5. use the adjusted vectors
 642                                         VectorAdd(vieworg, gunorg, gunorg);
 643                                         VectorAdd(viewangles, gunangles, gunangles);
 644
 645                                         // vertical view bobbing code
 646                                         xyspeed = sqrt(cl.velocity[0]*cl.velocity[0] + cl.velocity[1]*cl.velocity[1]);
 647                                         if (cl_bob.value && cl_bobcycle.value)
 648                                         {
 649                                                 // LordHavoc: this code is *weird*, but not replacable (I think it
 650                                                 // should be done in QC on the server, but oh well, quake is quake)
 651                                                 // LordHavoc: figured out bobup: the time at which the sin is at 180
 652                                                 // degrees (which allows lengthening or squishing the peak or valley)
 653                                                 cycle = cl.time / cl_bobcycle.value;
 654                                                 cycle -= (int) cycle;
 655                                                 if (cycle < cl_bobup.value)
 656                                                         cycle = sin(M_PI * cycle / cl_bobup.value);
 657                                                 else
 658                                                         cycle = sin(M_PI + M_PI * (cycle-cl_bobup.value)/(1.0 - cl_bobup.value));
 659                                                 // bob is proportional to velocity in the xy plane
 660                                                 // (don't count Z, or jumping messes it up)
 661                                                 bob = xyspeed * cl_bob.value;
 662                                                 bob = bob*0.3 + bob*0.7*cycle;
 663                                                 vieworg[2] += bound(-8, bob, 5);
 664                                                 // we also need to adjust gunorg, or this appears like pushing the gun!
 665                                                 // In the old code, this was applied to vieworg BEFORE copying to gunorg,
 666                                                 // but this is not viable with the new followmodel code as that would mean
 667                                                 // that followmodel would work on the munged-by-bob vieworg and do feedback
 668                                                 gunorg[2] += bound(-8, bob, 5);
 669                                         }
 670
 671                                         // horizontal bobbing code
 672                                         if (cl_bobside.value && cl_bobsidecycle.value)
 673                                         {
 674                                                 vec3_t bobvel;
 675                                                 vec3_t forward, right, up;
 676                                                 float side, front;
 677
 678                                                 cycle = cl.time / cl_bobsidecycle.value;
 679                                                 cycle -= (int) cycle;
 680                                                 if (cycle < cl_bobsideup.value)
 681                                                         cycle = sin(M_PI * cycle / cl_bobsideup.value);
 682                                                 else
 683                                                         cycle = sin(M_PI + M_PI * (cycle-cl_bobsideup.value)/(1.0 - cl_bobsideup.value));
 684                                                 // bob is proportional to velocity in the xy plane
 685                                                 // (don't count Z, or jumping messes it up)
 686                                                 bob = xyspeed * cl_bobside.value;
 687                                                 bob = bob*0.3 + bob*0.7*cycle;
 688
 689                                                 // this value slowly decreases from 1 to 0 when we stop touching the ground.
 690                                                 // The cycle is later multiplied with it so the view smooths back to normal
 691                                                 if (cl.onground && !cl.cmd.jump) // also block the effect while the jump button is pressed, to avoid twitches when bunny-hopping
 692                                                         cl.bobside_airtime = 1;
 693                                                 else
 694                                                 {
 695                                                         if(cl.bobside_airtime > 0)
 696                                                                 cl.bobside_airtime -= bound(0, cl_bobsideairtime.value, 1);
 697                                                         else
 698                                                                 cl.bobside_airtime = 0;
 699                                                 }
 700
 701                                                 // now we calculate the side and front of the player, between the X and Y axis
 702                                                 AngleVectors(viewangles, forward, right, up);
 703                                                 // now the speed based on these angles. The division is for mathing vertical bobbing intensity
 704                                                 side = DotProduct (cl.velocity, right) / 1000 * cl.bobside_airtime;
 705                                                 front = DotProduct (cl.velocity, forward) / 1000 * cl.bobside_airtime;
 706                                                 forward[0] *= bob;
 707                                                 forward[1] *= bob;
 708                                                 right[0] *= bob;
 709                                                 right[1] *= bob;
 710                                                 // we use side with forward and front with right so the side bobbing goes
 711                                                 // to the side when we walk forward and to the front when we strafe.
 712                                                 VectorMAMAM(side, forward, front, right, 0, up, bobvel);
 713                                                 vieworg[0] += bound(-8, bobvel[0], 8);
 714                                                 vieworg[1] += bound(-8, bobvel[1], 8);
 715                                                 // we also need to adjust gunorg, or this appears like pushing the gun!
 716                                                 // In the old code, this was applied to vieworg BEFORE copying to gunorg,
 717                                                 // but this is not viable with the new followmodel code as that would mean
 718                                                 // that followmodel would work on the munged-by-bob vieworg and do feedback
 719                                                 gunorg[0] += bound(-8, bobvel[0], 8);
 720                                                 gunorg[1] += bound(-8, bobvel[1], 8);
 721                                         }
 722
 723                                         // view rolling code
 724                                         if (cl_bobroll.value && cl_bobrollcycle.value)
 725                                         {
 726                                                 cycle2 = cl.time / cl_bobrollcycle.value;
 727                                                 cycle2 -= (int) cycle2;
 728                                                 if (cycle2 < 0.5)
 729                                                         cycle2 = sin(M_PI * cycle2 / 0.5);
 730                                                 else
 731                                                         cycle2 = sin(M_PI + M_PI * (cycle2-0.5)/0.5);
 732
 733                                                 // this value slowly decreases from 1 to 0 when we stop touching the ground.
 734                                                 // The cycle is later multiplied with it so the view smooths back to normal
 735                                                 if (cl.onground && !cl.cmd.jump) // also block the effect while the jump button is pressed, to avoid twitches when bunny-hopping
 736                                                         cl.bobroll_airtime = 1;
 737                                                 else
 738                                                 {
 739                                                         if(cl.bobroll_airtime > 0)
 740                                                                 cl.bobroll_airtime -= bound(0, cl_bobrollairtime.value, 1);
 741                                                         else
 742                                                                 cl.bobroll_airtime = 0;
 743                                                 }
 744
 745                                                 cycle2 *= cl_bobroll.value * cl.bobroll_airtime;
 746                                                 bobroll = bound(0, xyspeed, sv_maxspeed.value) * cycle2;
 747                                                 viewangles[2] += bound(-45, bobroll, 45);
 748                                         }
 749
 750                                         // gun model bobbing code
 751                                         if (cl_bob.value && cl_bobmodel.value)
 752                                         {
 753                                                 // calculate for swinging gun model
 754                                                 // the gun bobs when running on the ground, but doesn't bob when you're in the air.
 755                                                 // Sajt: I tried to smooth out the transitions between bob and no bob, which works
 756                                                 // for the most part, but for some reason when you go through a message trigger or
 757                                                 // pick up an item or anything like that it will momentarily jolt the gun.
 758                                                 vec3_t forward, right, up;
 759                                                 float bspeed;
 760                                                 float s;
 761                                                 float t;
 762
 763                                                 s = cl.time * cl_bobmodel_speed.value;
 764                                                 if (cl.onground)
 765                                                 {
 766                                                         if (cl.time - cl.hitgroundtime < 0.2)
 767                                                         {
 768                                                                 // just hit the ground, speed the bob back up over the next 0.2 seconds
 769                                                                 t = cl.time - cl.hitgroundtime;
 770                                                                 t = bound(0, t, 0.2);
 771                                                                 t *= 5;
 772                                                         }
 773                                                         else
 774                                                                 t = 1;
 775                                                 }
 776                                                 else
 777                                                 {
 778                                                         // recently left the ground, slow the bob down over the next 0.2 seconds
 779                                                         t = cl.time - cl.lastongroundtime;
 780                                                         t = 0.2 - bound(0, t, 0.2);
 781                                                         t *= 5;
 782                                                 }
 783
 784                                                 bspeed = bound (0, xyspeed, 400) * 0.01f;
 785                                                 AngleVectors (gunangles, forward, right, up);
 786                                                 bob = bspeed * cl_bobmodel_side.value * cl_viewmodel_scale.value * sin (s) * t;
 787                                                 VectorMA (gunorg, bob, right, gunorg);
 788                                                 bob = bspeed * cl_bobmodel_up.value * cl_viewmodel_scale.value * cos (s * 2) * t;
 789                                                 VectorMA (gunorg, bob, up, gunorg);
 790                                         }
 791                                 }
 792                         }
 793                         // calculate a view matrix for rendering the scene
 794                         if (v_idlescale.value)
 795                                 Matrix4x4_CreateFromQuakeEntity(&r_refdef.view.matrix, vieworg[0], vieworg[1], vieworg[2], viewangles[0] + v_idlescale.value * sin(cl.time*v_ipitch_cycle.value) * v_ipitch_level.value, viewangles[1] + v_idlescale.value * sin(cl.time*v_iyaw_cycle.value) * v_iyaw_level.value, viewangles[2] + v_idlescale.value * sin(cl.time*v_iroll_cycle.value) * v_iroll_level.value, 1);
 796                         else
 797                                 Matrix4x4_CreateFromQuakeEntity(&r_refdef.view.matrix, vieworg[0], vieworg[1], vieworg[2], viewangles[0], viewangles[1], viewangles[2] + v_idlescale.value * sin(cl.time*v_iroll_cycle.value) * v_iroll_level.value, 1);
 798                         // calculate a viewmodel matrix for use in view-attached entities
 799                         Matrix4x4_CreateFromQuakeEntity(&viewmodelmatrix, gunorg[0], gunorg[1], gunorg[2], gunangles[0], gunangles[1], gunangles[2], cl_viewmodel_scale.value);
 800                         VectorCopy(vieworg, cl.csqc_origin);
 801                         VectorCopy(viewangles, cl.csqc_angles);
 802                 }
 803         }
 804 }
 805
 806 void V_FadeViewFlashs(void)
 807 {
 808         // don't flash if time steps backwards
 809         if (cl.time <= cl.oldtime)
 810                 return;
 811         // drop the damage value
 812         cl.cshifts[CSHIFT_DAMAGE].percent -= (cl.time - cl.oldtime)*cl.cshifts[CSHIFT_DAMAGE].alphafade;
 813         if (cl.cshifts[CSHIFT_DAMAGE].percent <= 0)
 814                 cl.cshifts[CSHIFT_DAMAGE].percent = 0;
 815         // drop the bonus value
 816         cl.cshifts[CSHIFT_BONUS].percent -= (cl.time - cl.oldtime)*cl.cshifts[CSHIFT_BONUS].alphafade;
 817         if (cl.cshifts[CSHIFT_BONUS].percent <= 0)
 818                 cl.cshifts[CSHIFT_BONUS].percent = 0;
 819 }
 820
 821 void V_CalcViewBlend(void)
 822 {
 823         float a2;
 824         int j;
 825         r_refdef.viewblend[0] = 0;
 826         r_refdef.viewblend[1] = 0;
 827         r_refdef.viewblend[2] = 0;
 828         r_refdef.viewblend[3] = 0;
 829         r_refdef.frustumscale_x = 1;
 830         r_refdef.frustumscale_y = 1;
 831         if (cls.state == ca_connected && cls.signon == SIGNONS)
 832         {
 833                 // set contents color
 834                 int supercontents;
 835                 vec3_t vieworigin;
 836                 Matrix4x4_OriginFromMatrix(&r_refdef.view.matrix, vieworigin);
 837                 supercontents = CL_PointSuperContents(vieworigin);
 838                 if (supercontents & SUPERCONTENTS_LIQUIDSMASK)
 839                 {
 840                         r_refdef.frustumscale_x *= 1 - (((sin(cl.time * 4.7) + 1) * 0.015) * r_waterwarp.value);
 841                         r_refdef.frustumscale_y *= 1 - (((sin(cl.time * 3.0) + 1) * 0.015) * r_waterwarp.value);
 842                         if (supercontents & SUPERCONTENTS_LAVA)
 843                         {
 844                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 255;
 845                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
 846                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
 847                         }
 848                         else if (supercontents & SUPERCONTENTS_SLIME)
 849                         {
 850                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
 851                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 25;
 852                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 5;
 853                         }
 854                         else
 855                         {
 856                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 130;
 857                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
 858                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 50;
 859                         }
 860                         cl.cshifts[CSHIFT_CONTENTS].percent = 150 * 0.5;
 861                 }
 862                 else
 863                 {
 864                         cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
 865                         cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 0;
 866                         cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
 867                         cl.cshifts[CSHIFT_CONTENTS].percent = 0;
 868                 }
 869
 870                 if (gamemode != GAME_TRANSFUSION)
 871                 {
 872                         if (cl.stats[STAT_ITEMS] & IT_QUAD)
 873                         {
 874                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
 875                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 0;
 876                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 255;
 877                                 cl.cshifts[CSHIFT_POWERUP].percent = 30;
 878                         }
 879                         else if (cl.stats[STAT_ITEMS] & IT_SUIT)
 880                         {
 881                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
 882                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
 883                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
 884                                 cl.cshifts[CSHIFT_POWERUP].percent = 20;
 885                         }
 886                         else if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY)
 887                         {
 888                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 100;
 889                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 100;
 890                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 100;
 891                                 cl.cshifts[CSHIFT_POWERUP].percent = 100;
 892                         }
 893                         else if (cl.stats[STAT_ITEMS] & IT_INVULNERABILITY)
 894                         {
 895                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 255;
 896                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
 897                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
 898                                 cl.cshifts[CSHIFT_POWERUP].percent = 30;
 899                         }
 900                         else
 901                                 cl.cshifts[CSHIFT_POWERUP].percent = 0;
 902                 }
 903
 904                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[0] = v_cshift.destcolor[0];
 905                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[1] = v_cshift.destcolor[1];
 906                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[2] = v_cshift.destcolor[2];
 907                 cl.cshifts[CSHIFT_VCSHIFT].percent = v_cshift.percent;
 908
 909                 // LordHavoc: fixed V_CalcBlend
 910                 for (j = 0;j < NUM_CSHIFTS;j++)
 911                 {
 912                         a2 = bound(0.0f, cl.cshifts[j].percent * (1.0f / 255.0f), 1.0f);
 913                         if (a2 > 0)
 914                         {
 915                                 VectorLerp(r_refdef.viewblend, a2, cl.cshifts[j].destcolor, r_refdef.viewblend);
 916                                 r_refdef.viewblend[3] = (1 - (1 - r_refdef.viewblend[3]) * (1 - a2)); // correct alpha multiply...  took a while to find it on the web
 917                         }
 918                 }
 919                 // saturate color (to avoid blending in black)
 920                 if (r_refdef.viewblend[3])
 921                 {
 922                         a2 = 1 / r_refdef.viewblend[3];
 923                         VectorScale(r_refdef.viewblend, a2, r_refdef.viewblend);
 924                 }
 925                 r_refdef.viewblend[0] = bound(0.0f, r_refdef.viewblend[0] * (1.0f/255.0f), 1.0f);
 926                 r_refdef.viewblend[1] = bound(0.0f, r_refdef.viewblend[1] * (1.0f/255.0f), 1.0f);
 927                 r_refdef.viewblend[2] = bound(0.0f, r_refdef.viewblend[2] * (1.0f/255.0f), 1.0f);
 928                 r_refdef.viewblend[3] = bound(0.0f, r_refdef.viewblend[3] * gl_polyblend.value, 1.0f);
 929
 930                 // Samual: Ugly hack, I know. But it's the best we can do since
 931                 // there is no way to detect client states from the engine.
 932                 if (cl.stats[STAT_HEALTH] <= 0 && cl.stats[STAT_HEALTH] != -666 &&
 933                         cl.stats[STAT_HEALTH] != -2342 && cl_deathfade.value > 0)
 934                 {
 935                         cl.deathfade += cl_deathfade.value * max(0.00001, cl.time - cl.oldtime);
 936                         cl.deathfade = bound(0.0f, cl.deathfade, 0.9f);
 937                 }
 938                 else
 939                         cl.deathfade = 0.0f;
 940
 941                 if(cl.deathfade > 0)
 942                 {
 943                         float a;
 944                         float deathfadevec[3] = {0.3f, 0.0f, 0.0f};
 945                         a = r_refdef.viewblend[3] + cl.deathfade - r_refdef.viewblend[3]*cl.deathfade;
 946                         if(a > 0)
 947                                 VectorMAM(r_refdef.viewblend[3] * (1 - cl.deathfade) / a, r_refdef.viewblend, cl.deathfade / a, deathfadevec, r_refdef.viewblend);
 948                         r_refdef.viewblend[3] = a;
 949                 }
 950         }
 951 }
 952
 953 //============================================================================
 954
 955 /*
 956 =============
 957 V_Init
 958 =============
 959 */
 960 void V_Init (void)
 961 {
 962         Cmd_AddCommand ("v_cshift", V_cshift_f, "sets tint color of view");
 963         Cmd_AddCommand ("bf", V_BonusFlash_f, "briefly flashes a bright color tint on view (used when items are picked up); optionally takes R G B [A [alphafade]] arguments to specify how the flash looks");
 964         Cmd_AddCommand ("centerview", V_StartPitchDrift, "gradually recenter view (stop looking up/down)");
 965
 966         Cvar_RegisterVariable (&v_centermove);
 967         Cvar_RegisterVariable (&v_centerspeed);
 968
 969         Cvar_RegisterVariable (&v_iyaw_cycle);
 970         Cvar_RegisterVariable (&v_iroll_cycle);
 971         Cvar_RegisterVariable (&v_ipitch_cycle);
 972         Cvar_RegisterVariable (&v_iyaw_level);
 973         Cvar_RegisterVariable (&v_iroll_level);
 974         Cvar_RegisterVariable (&v_ipitch_level);
 975
 976         Cvar_RegisterVariable (&v_idlescale);
 977         Cvar_RegisterVariable (&crosshair);
 978
 979         Cvar_RegisterVariable (&cl_rollspeed);
 980         Cvar_RegisterVariable (&cl_rollangle);
 981         Cvar_RegisterVariable (&cl_bob);
 982         Cvar_RegisterVariable (&cl_bobcycle);
 983         Cvar_RegisterVariable (&cl_bobup);
 984         Cvar_RegisterVariable (&cl_bobside);
 985         Cvar_RegisterVariable (&cl_bobsidecycle);
 986         Cvar_RegisterVariable (&cl_bobsideup);
 987         Cvar_RegisterVariable (&cl_bobsideairtime);
 988         Cvar_RegisterVariable (&cl_bobroll);
 989         Cvar_RegisterVariable (&cl_bobrollcycle);
 990         Cvar_RegisterVariable (&cl_bobrollairtime);
 991         Cvar_RegisterVariable (&cl_bobmodel);
 992         Cvar_RegisterVariable (&cl_bobmodel_side);
 993         Cvar_RegisterVariable (&cl_bobmodel_up);
 994         Cvar_RegisterVariable (&cl_bobmodel_speed);
 995
 996         Cvar_RegisterVariable (&cl_leanmodel);
 997         Cvar_RegisterVariable (&cl_leanmodel_side_speed);
 998         Cvar_RegisterVariable (&cl_leanmodel_side_limit);
 999         Cvar_RegisterVariable (&cl_leanmodel_side_highpass1);
1000         Cvar_RegisterVariable (&cl_leanmodel_side_lowpass);
1001         Cvar_RegisterVariable (&cl_leanmodel_side_highpass);
1002         Cvar_RegisterVariable (&cl_leanmodel_up_speed);
1003         Cvar_RegisterVariable (&cl_leanmodel_up_limit);
1004         Cvar_RegisterVariable (&cl_leanmodel_up_highpass1);
1005         Cvar_RegisterVariable (&cl_leanmodel_up_lowpass);
1006         Cvar_RegisterVariable (&cl_leanmodel_up_highpass);
1007
1008         Cvar_RegisterVariable (&cl_followmodel);
1009         Cvar_RegisterVariable (&cl_followmodel_side_speed);
1010         Cvar_RegisterVariable (&cl_followmodel_side_limit);
1011         Cvar_RegisterVariable (&cl_followmodel_side_highpass1);
1012         Cvar_RegisterVariable (&cl_followmodel_side_lowpass);
1013         Cvar_RegisterVariable (&cl_followmodel_side_highpass);
1014         Cvar_RegisterVariable (&cl_followmodel_up_speed);
1015         Cvar_RegisterVariable (&cl_followmodel_up_limit);
1016         Cvar_RegisterVariable (&cl_followmodel_up_highpass1);
1017         Cvar_RegisterVariable (&cl_followmodel_up_lowpass);
1018         Cvar_RegisterVariable (&cl_followmodel_up_highpass);
1019
1020         Cvar_RegisterVariable (&cl_viewmodel_scale);
1021
1022         Cvar_RegisterVariable (&v_kicktime);
1023         Cvar_RegisterVariable (&v_kickroll);
1024         Cvar_RegisterVariable (&v_kickpitch);
1025
1026         Cvar_RegisterVariable (&cl_stairsmoothspeed);
1027
1028         Cvar_RegisterVariable (&chase_back);
1029         Cvar_RegisterVariable (&chase_up);
1030         Cvar_RegisterVariable (&chase_active);
1031         Cvar_RegisterVariable (&chase_overhead);
1032         Cvar_RegisterVariable (&chase_pitchangle);
1033         if (gamemode == GAME_GOODVSBAD2)
1034                 Cvar_RegisterVariable (&chase_stevie);
1035
1036         Cvar_RegisterVariable (&v_deathtilt);
1037         Cvar_RegisterVariable (&v_deathtiltangle);
1038 }
1039