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 /*
  26
  27 The view is allowed to move slightly from it's true position for bobbing,
  28 but if it exceeds 8 pixels linear distance (spherical, not box), the list of
  29 entities sent from the server may not include everything in the pvs, especially
  30 when crossing a water boudnary.
  31
  32 */
  33
  34 cvar_t  cl_rollspeed = {0, "cl_rollspeed", "200"};
  35 cvar_t  cl_rollangle = {0, "cl_rollangle", "2.0"};
  36
  37 cvar_t  cl_bob = {0, "cl_bob","0.02"};
  38 cvar_t  cl_bobcycle = {0, "cl_bobcycle","0.6"};
  39 cvar_t  cl_bobup = {0, "cl_bobup","0.5"};
  40
  41 cvar_t  cl_bobmodel = {0, "cl_bobmodel", "1"};
  42 cvar_t  cl_bobmodel_side = {0, "cl_bobmodel_side", "0.05"};
  43 cvar_t  cl_bobmodel_up = {0, "cl_bobmodel_up", "0.02"};
  44 cvar_t  cl_bobmodel_speed = {0, "cl_bobmodel_speed", "7"};
  45
  46 cvar_t  v_kicktime = {0, "v_kicktime", "0.5"};
  47 cvar_t  v_kickroll = {0, "v_kickroll", "0.6"};
  48 cvar_t  v_kickpitch = {0, "v_kickpitch", "0.6"};
  49
  50 cvar_t  v_iyaw_cycle = {0, "v_iyaw_cycle", "2"};
  51 cvar_t  v_iroll_cycle = {0, "v_iroll_cycle", "0.5"};
  52 cvar_t  v_ipitch_cycle = {0, "v_ipitch_cycle", "1"};
  53 cvar_t  v_iyaw_level = {0, "v_iyaw_level", "0.3"};
  54 cvar_t  v_iroll_level = {0, "v_iroll_level", "0.1"};
  55 cvar_t  v_ipitch_level = {0, "v_ipitch_level", "0.3"};
  56
  57 cvar_t  v_idlescale = {0, "v_idlescale", "0"};
  58
  59 cvar_t  crosshair = {CVAR_SAVE, "crosshair", "0"};
  60
  61 cvar_t  v_centermove = {0, "v_centermove", "0.15"};
  62 cvar_t  v_centerspeed = {0, "v_centerspeed","500"};
  63
  64 cvar_t cl_stairsmoothspeed = {CVAR_SAVE, "cl_stairsmoothspeed", "160"};
  65
  66 cvar_t chase_back = {CVAR_SAVE, "chase_back", "48"};
  67 cvar_t chase_up = {CVAR_SAVE, "chase_up", "24"};
  68 cvar_t chase_active = {CVAR_SAVE, "chase_active", "0"};
  69 // GAME_GOODVSBAD2
  70 cvar_t chase_stevie = {0, "chase_stevie", "0"};
  71
  72 cvar_t v_deathtilt = {0, "v_deathtilt", "1"};
  73
  74 float   v_dmg_time, v_dmg_roll, v_dmg_pitch;
  75
  76
  77 /*
  78 ===============
  79 V_CalcRoll
  80
  81 Used by view and sv_user
  82 ===============
  83 */
  84 float V_CalcRoll (vec3_t angles, vec3_t velocity)
  85 {
  86         vec3_t  right;
  87         float   sign;
  88         float   side;
  89         float   value;
  90
  91         AngleVectors (angles, NULL, right, NULL);
  92         side = DotProduct (velocity, right);
  93         sign = side < 0 ? -1 : 1;
  94         side = fabs(side);
  95
  96         value = cl_rollangle.value;
  97
  98         if (side < cl_rollspeed.value)
  99                 side = side * value / cl_rollspeed.value;
 100         else
 101                 side = value;
 102
 103         return side*sign;
 104
 105 }
 106
 107 void V_StartPitchDrift (void)
 108 {
 109         if (cl.laststop == cl.time)
 110                 return;         // something else is keeping it from drifting
 111
 112         if (cl.nodrift || !cl.pitchvel)
 113         {
 114                 cl.pitchvel = v_centerspeed.value;
 115                 cl.nodrift = false;
 116                 cl.driftmove = 0;
 117         }
 118 }
 119
 120 void V_StopPitchDrift (void)
 121 {
 122         cl.laststop = cl.time;
 123         cl.nodrift = true;
 124         cl.pitchvel = 0;
 125 }
 126
 127 /*
 128 ===============
 129 V_DriftPitch
 130
 131 Moves the client pitch angle towards cl.idealpitch sent by the server.
 132
 133 If the user is adjusting pitch manually, either with lookup/lookdown,
 134 mlook and mouse, or klook and keyboard, pitch drifting is constantly stopped.
 135
 136 Drifting is enabled when the center view key is hit, mlook is released and
 137 lookspring is non 0, or when
 138 ===============
 139 */
 140 void V_DriftPitch (void)
 141 {
 142         float           delta, move;
 143
 144         if (noclip_anglehack || !cl.onground || cls.demoplayback )
 145         {
 146                 cl.driftmove = 0;
 147                 cl.pitchvel = 0;
 148                 return;
 149         }
 150
 151 // don't count small mouse motion
 152         if (cl.nodrift)
 153         {
 154                 if ( fabs(cl.cmd.forwardmove) < cl_forwardspeed.value)
 155                         cl.driftmove = 0;
 156                 else
 157                         cl.driftmove += cl.frametime;
 158
 159                 if ( cl.driftmove > v_centermove.value)
 160                 {
 161                         V_StartPitchDrift ();
 162                 }
 163                 return;
 164         }
 165
 166         delta = cl.idealpitch - cl.viewangles[PITCH];
 167
 168         if (!delta)
 169         {
 170                 cl.pitchvel = 0;
 171                 return;
 172         }
 173
 174         move = cl.frametime * cl.pitchvel;
 175         cl.pitchvel += cl.frametime * v_centerspeed.value;
 176
 177         if (delta > 0)
 178         {
 179                 if (move > delta)
 180                 {
 181                         cl.pitchvel = 0;
 182                         move = delta;
 183                 }
 184                 cl.viewangles[PITCH] += move;
 185         }
 186         else if (delta < 0)
 187         {
 188                 if (move > -delta)
 189                 {
 190                         cl.pitchvel = 0;
 191                         move = -delta;
 192                 }
 193                 cl.viewangles[PITCH] -= move;
 194         }
 195 }
 196
 197
 198 /*
 199 ==============================================================================
 200
 201                                                 SCREEN FLASHES
 202
 203 ==============================================================================
 204 */
 205
 206
 207 /*
 208 ===============
 209 V_ParseDamage
 210 ===============
 211 */
 212 void V_ParseDamage (void)
 213 {
 214         int armor, blood;
 215         vec3_t from;
 216         //vec3_t forward, right;
 217         vec3_t localfrom;
 218         entity_t *ent;
 219         //float side;
 220         float count;
 221
 222         armor = MSG_ReadByte ();
 223         blood = MSG_ReadByte ();
 224         MSG_ReadVector(from, cl.protocol);
 225
 226         count = blood*0.5 + armor*0.5;
 227         if (count < 10)
 228                 count = 10;
 229
 230         cl.faceanimtime = cl.time + 0.2;                // put sbar face into pain frame
 231
 232         cl.cshifts[CSHIFT_DAMAGE].percent += 3*count;
 233         if (cl.cshifts[CSHIFT_DAMAGE].percent < 0)
 234                 cl.cshifts[CSHIFT_DAMAGE].percent = 0;
 235         if (cl.cshifts[CSHIFT_DAMAGE].percent > 150)
 236                 cl.cshifts[CSHIFT_DAMAGE].percent = 150;
 237
 238         if (armor > blood)
 239         {
 240                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 200;
 241                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 100;
 242                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 100;
 243         }
 244         else if (armor)
 245         {
 246                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 220;
 247                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 50;
 248                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 50;
 249         }
 250         else
 251         {
 252                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 255;
 253                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 0;
 254                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 0;
 255         }
 256
 257         // calculate view angle kicks
 258         if (cl_entities[cl.viewentity].state_current.active)
 259         {
 260                 ent = &cl_entities[cl.viewentity];
 261                 Matrix4x4_Transform(&ent->render.inversematrix, from, localfrom);
 262                 VectorNormalize(localfrom);
 263                 v_dmg_pitch = count * localfrom[0] * v_kickpitch.value;
 264                 v_dmg_roll = count * localfrom[1] * v_kickroll.value;
 265                 v_dmg_time = v_kicktime.value;
 266         }
 267 }
 268
 269 static cshift_t v_cshift;
 270
 271 /*
 272 ==================
 273 V_cshift_f
 274 ==================
 275 */
 276 static void V_cshift_f (void)
 277 {
 278         v_cshift.destcolor[0] = atoi(Cmd_Argv(1));
 279         v_cshift.destcolor[1] = atoi(Cmd_Argv(2));
 280         v_cshift.destcolor[2] = atoi(Cmd_Argv(3));
 281         v_cshift.percent = atoi(Cmd_Argv(4));
 282 }
 283
 284
 285 /*
 286 ==================
 287 V_BonusFlash_f
 288
 289 When you run over an item, the server sends this command
 290 ==================
 291 */
 292 static void V_BonusFlash_f (void)
 293 {
 294         cl.cshifts[CSHIFT_BONUS].destcolor[0] = 215;
 295         cl.cshifts[CSHIFT_BONUS].destcolor[1] = 186;
 296         cl.cshifts[CSHIFT_BONUS].destcolor[2] = 69;
 297         cl.cshifts[CSHIFT_BONUS].percent = 50;
 298 }
 299
 300 /*
 301 ==============================================================================
 302
 303                                                 VIEW RENDERING
 304
 305 ==============================================================================
 306 */
 307
 308 extern matrix4x4_t viewmodelmatrix;
 309
 310 #include "cl_collision.h"
 311
 312 /*
 313 ==================
 314 V_CalcRefdef
 315
 316 ==================
 317 */
 318 void V_CalcRefdef (void)
 319 {
 320         static float oldz;
 321         entity_t *ent;
 322         float vieworg[3], gunorg[3], viewangles[3];
 323         trace_t trace;
 324         VectorClear(gunorg);
 325         Matrix4x4_CreateIdentity(&viewmodelmatrix);
 326         Matrix4x4_CreateIdentity(&r_refdef.viewentitymatrix);
 327         if (cls.state == ca_connected && cls.signon == SIGNONS)
 328         {
 329                 // ent is the view entity (visible when out of body)
 330                 ent = &cl_entities[cl.viewentity];
 331                 if (cl.intermission)
 332                 {
 333                         // entity is a fixed camera, just copy the matrix
 334                         Matrix4x4_Copy(&r_refdef.viewentitymatrix, &ent->render.matrix);
 335                         Matrix4x4_Copy(&viewmodelmatrix, &ent->render.matrix);
 336                         r_refdef.viewentitymatrix.m[2][3] += cl.stats[STAT_VIEWHEIGHT];
 337                         viewmodelmatrix.m[2][3] += cl.stats[STAT_VIEWHEIGHT];
 338                 }
 339                 else
 340                 {
 341                         // player can look around, so take the origin from the entity,
 342                         // and the angles from the input system
 343                         Matrix4x4_OriginFromMatrix(&ent->render.matrix, vieworg);
 344                         VectorCopy(cl.viewangles, viewangles);
 345
 346                         if (cl.onground)
 347                         {
 348                                 if (!cl.oldonground)
 349                                         cl.hitgroundtime = cl.time;
 350                                 cl.lastongroundtime = cl.time;
 351                         }
 352                         cl.oldonground = cl.onground;
 353
 354                         // stair smoothing
 355                         //Con_Printf("cl.onground %i oldz %f newz %f\n", cl.onground, oldz, vieworg[2]);
 356                         if (cl.onground && oldz < vieworg[2])
 357                         {
 358                                 oldz += (cl.time - cl.oldtime) * cl_stairsmoothspeed.value;
 359                                 oldz = vieworg[2] = bound(vieworg[2] - 16, oldz, vieworg[2]);
 360                         }
 361                         else if (cl.onground && oldz > vieworg[2])
 362                         {
 363                                 oldz -= (cl.time - cl.oldtime) * cl_stairsmoothspeed.value;
 364                                 oldz = vieworg[2] = bound(vieworg[2], oldz, vieworg[2] + 16);
 365                         }
 366                         else
 367                                 oldz = vieworg[2];
 368
 369                         if (chase_active.value)
 370                         {
 371                                 // observing entity from third person
 372                                 vec_t camback, camup, dist, forward[3], chase_dest[3];
 373
 374                                 camback = bound(0, chase_back.value, 128);
 375                                 if (chase_back.value != camback)
 376                                         Cvar_SetValueQuick(&chase_back, camback);
 377                                 camup = bound(-48, chase_up.value, 96);
 378                                 if (chase_up.value != camup)
 379                                         Cvar_SetValueQuick(&chase_up, camup);
 380
 381                                 // this + 22 is to match view_ofs for compatibility with older versions
 382                                 camup += 22;
 383
 384                                 if (gamemode == GAME_GOODVSBAD2 && chase_stevie.integer)
 385                                 {
 386                                         // look straight down from high above
 387                                         viewangles[0] = 90;
 388                                         camback = 2048;
 389                                 }
 390                                 AngleVectors(viewangles, forward, NULL, NULL);
 391
 392                                 // trace a little further so it hits a surface more consistently (to avoid 'snapping' on the edge of the range)
 393                                 dist = -camback - 8;
 394                                 chase_dest[0] = vieworg[0] + forward[0] * dist;
 395                                 chase_dest[1] = vieworg[1] + forward[1] * dist;
 396                                 chase_dest[2] = vieworg[2] + forward[2] * dist + camup;
 397                                 trace = CL_TraceBox(vieworg, vec3_origin, vec3_origin, chase_dest, true, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_SKY, false);
 398                                 VectorMAMAM(1, trace.endpos, 8, forward, 4, trace.plane.normal, vieworg);
 399                         }
 400                         else
 401                         {
 402                                 // first person view from entity
 403                                 // angles
 404                                 if (cl.stats[STAT_HEALTH] <= 0 && v_deathtilt.integer)
 405                                         viewangles[ROLL] = 80;  // dead view angle
 406                                 VectorAdd(viewangles, cl.punchangle, viewangles);
 407                                 viewangles[ROLL] += V_CalcRoll(cl.viewangles, cl.movement_velocity);
 408                                 if (v_dmg_time > 0)
 409                                 {
 410                                         viewangles[ROLL] += v_dmg_time/v_kicktime.value*v_dmg_roll;
 411                                         viewangles[PITCH] += v_dmg_time/v_kicktime.value*v_dmg_pitch;
 412                                         v_dmg_time -= cl.frametime;
 413                                 }
 414                                 // origin
 415                                 VectorAdd(vieworg, cl.punchvector, vieworg);
 416                                 vieworg[2] += cl.stats[STAT_VIEWHEIGHT];
 417                                 if (cl.stats[STAT_HEALTH] > 0)
 418                                 {
 419                                         double xyspeed, bob;
 420
 421                                         xyspeed = sqrt(cl.velocity[0]*cl.velocity[0] + cl.velocity[1]*cl.velocity[1]);
 422                                         if (cl_bob.value && cl_bobcycle.value)
 423                                         {
 424                                                 float cycle;
 425                                                 // LordHavoc: this code is *weird*, but not replacable (I think it
 426                                                 // should be done in QC on the server, but oh well, quake is quake)
 427                                                 // LordHavoc: figured out bobup: the time at which the sin is at 180
 428                                                 // degrees (which allows lengthening or squishing the peak or valley)
 429                                                 cycle = cl.time / cl_bobcycle.value;
 430                                                 cycle -= (int) cycle;
 431                                                 if (cycle < cl_bobup.value)
 432                                                         cycle = sin(M_PI * cycle / cl_bobup.value);
 433                                                 else
 434                                                         cycle = sin(M_PI + M_PI * (cycle-cl_bobup.value)/(1.0 - cl_bobup.value));
 435                                                 // bob is proportional to velocity in the xy plane
 436                                                 // (don't count Z, or jumping messes it up)
 437                                                 bob = xyspeed * cl_bob.value;
 438                                                 bob = bob*0.3 + bob*0.7*cycle;
 439                                                 vieworg[2] += bound(-7, bob, 4);
 440                                         }
 441
 442                                         VectorCopy(vieworg, gunorg);
 443
 444                                         if (cl_bobmodel.value)
 445                                         {
 446                                                 // calculate for swinging gun model
 447                                                 // the gun bobs when running on the ground, but doesn't bob when you're in the air.
 448                                                 // Sajt: I tried to smooth out the transitions between bob and no bob, which works
 449                                                 // for the most part, but for some reason when you go through a message trigger or
 450                                                 // pick up an item or anything like that it will momentarily jolt the gun.
 451                                                 vec3_t forward, right, up;
 452                                                 float bspeed;
 453                                                 float s;
 454                                                 float t;
 455
 456                                                 s = cl.time * cl_bobmodel_speed.value;
 457                                                 if (cl.onground)
 458                                                 {
 459                                                         if (cl.time - cl.hitgroundtime < 0.2)
 460                                                         {
 461                                                                 // just hit the ground, speed the bob back up over the next 0.2 seconds
 462                                                                 t = cl.time - cl.hitgroundtime;
 463                                                                 t = bound(0, t, 0.2);
 464                                                                 t *= 5;
 465                                                         }
 466                                                         else
 467                                                                 t = 1;
 468                                                 }
 469                                                 else
 470                                                 {
 471                                                         // recently left the ground, slow the bob down over the next 0.2 seconds
 472                                                         t = cl.time - cl.lastongroundtime;
 473                                                         t = 0.2 - bound(0, t, 0.2);
 474                                                         t *= 5;
 475                                                 }
 476
 477                                                 bspeed = bound (0, xyspeed, 400) * 0.01f;
 478                                                 AngleVectors (viewangles, forward, right, up);
 479                                                 bob = bspeed * cl_bobmodel_side.value * sin (s) * t;
 480                                                 VectorMA (gunorg, bob, right, gunorg);
 481                                                 bob = bspeed * cl_bobmodel_up.value * cos (s * 2) * t;
 482                                                 VectorMA (gunorg, bob, up, gunorg);
 483                                         }
 484                                 }
 485                         }
 486                         // calculate a view matrix for rendering the scene
 487                         if (v_idlescale.value)
 488                                 Matrix4x4_CreateFromQuakeEntity(&r_refdef.viewentitymatrix, 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);
 489                         else
 490                                 Matrix4x4_CreateFromQuakeEntity(&r_refdef.viewentitymatrix, 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);
 491                         // calculate a viewmodel matrix for use in view-attached entities
 492                         Matrix4x4_CreateFromQuakeEntity(&viewmodelmatrix, gunorg[0], gunorg[1], gunorg[2], viewangles[0], viewangles[1], viewangles[2], 0.3);
 493                 }
 494         }
 495 }
 496
 497 void V_FadeViewFlashs(void)
 498 {
 499         // drop the damage value
 500         cl.cshifts[CSHIFT_DAMAGE].percent -= (cl.time - cl.oldtime)*150;
 501         if (cl.cshifts[CSHIFT_DAMAGE].percent <= 0)
 502                 cl.cshifts[CSHIFT_DAMAGE].percent = 0;
 503         // drop the bonus value
 504         cl.cshifts[CSHIFT_BONUS].percent -= (cl.time - cl.oldtime)*100;
 505         if (cl.cshifts[CSHIFT_BONUS].percent <= 0)
 506                 cl.cshifts[CSHIFT_BONUS].percent = 0;
 507 }
 508
 509 void V_CalcViewBlend(void)
 510 {
 511         float a2;
 512         int j;
 513         r_refdef.viewblend[0] = 0;
 514         r_refdef.viewblend[1] = 0;
 515         r_refdef.viewblend[2] = 0;
 516         r_refdef.viewblend[3] = 0;
 517         r_refdef.fovscale_x = cl.viewzoom;
 518         r_refdef.fovscale_y = cl.viewzoom;
 519         if (cls.state == ca_connected && cls.signon == SIGNONS && gl_polyblend.value > 0)
 520         {
 521                 // set contents color
 522                 int supercontents;
 523                 vec3_t vieworigin;
 524                 Matrix4x4_OriginFromMatrix(&r_refdef.viewentitymatrix, vieworigin);
 525                 supercontents = CL_PointSuperContents(vieworigin);
 526                 if (supercontents & SUPERCONTENTS_LIQUIDSMASK)
 527                 {
 528                         r_refdef.fovscale_x *= 1 - (((sin(cl.time * 4.7) + 1) * 0.015) * r_waterwarp.value);
 529                         r_refdef.fovscale_y *= 1 - (((sin(cl.time * 3.0) + 1) * 0.015) * r_waterwarp.value);
 530                         if (supercontents & SUPERCONTENTS_LAVA)
 531                         {
 532                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 255;
 533                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
 534                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
 535                         }
 536                         else if (supercontents & SUPERCONTENTS_SLIME)
 537                         {
 538                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
 539                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 25;
 540                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 5;
 541                         }
 542                         else
 543                         {
 544                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 130;
 545                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
 546                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 50;
 547                         }
 548                         cl.cshifts[CSHIFT_CONTENTS].percent = 150 >> 1;
 549                 }
 550                 else
 551                 {
 552                         cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
 553                         cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 0;
 554                         cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
 555                         cl.cshifts[CSHIFT_CONTENTS].percent = 0;
 556                 }
 557
 558                 if (gamemode != GAME_TRANSFUSION)
 559                 {
 560                         if (cl.stats[STAT_ITEMS] & IT_QUAD)
 561                         {
 562                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
 563                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 0;
 564                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 255;
 565                                 cl.cshifts[CSHIFT_POWERUP].percent = 30;
 566                         }
 567                         else if (cl.stats[STAT_ITEMS] & IT_SUIT)
 568                         {
 569                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
 570                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
 571                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
 572                                 cl.cshifts[CSHIFT_POWERUP].percent = 20;
 573                         }
 574                         else if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY)
 575                         {
 576                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 100;
 577                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 100;
 578                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 100;
 579                                 cl.cshifts[CSHIFT_POWERUP].percent = 100;
 580                         }
 581                         else if (cl.stats[STAT_ITEMS] & IT_INVULNERABILITY)
 582                         {
 583                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 255;
 584                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
 585                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
 586                                 cl.cshifts[CSHIFT_POWERUP].percent = 30;
 587                         }
 588                         else
 589                                 cl.cshifts[CSHIFT_POWERUP].percent = 0;
 590                 }
 591
 592                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[0] = v_cshift.destcolor[0];
 593                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[1] = v_cshift.destcolor[1];
 594                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[2] = v_cshift.destcolor[2];
 595                 cl.cshifts[CSHIFT_VCSHIFT].percent = v_cshift.percent;
 596
 597                 // LordHavoc: fixed V_CalcBlend
 598                 for (j = 0;j < NUM_CSHIFTS;j++)
 599                 {
 600                         a2 = bound(0.0f, cl.cshifts[j].percent * (1.0f / 255.0f), 1.0f);
 601                         if (a2 > 0)
 602                         {
 603                                 VectorLerp(r_refdef.viewblend, a2, cl.cshifts[j].destcolor, r_refdef.viewblend);
 604                                 r_refdef.viewblend[3] = (1 - (1 - r_refdef.viewblend[3]) * (1 - a2)); // correct alpha multiply...  took a while to find it on the web
 605                         }
 606                 }
 607                 // saturate color (to avoid blending in black)
 608                 if (r_refdef.viewblend[3])
 609                 {
 610                         a2 = 1 / r_refdef.viewblend[3];
 611                         VectorScale(r_refdef.viewblend, a2, r_refdef.viewblend);
 612                 }
 613
 614                 r_refdef.viewblend[0] = bound(0.0f, r_refdef.viewblend[0] * (1.0f/255.0f), 1.0f);
 615                 r_refdef.viewblend[1] = bound(0.0f, r_refdef.viewblend[1] * (1.0f/255.0f), 1.0f);
 616                 r_refdef.viewblend[2] = bound(0.0f, r_refdef.viewblend[2] * (1.0f/255.0f), 1.0f);
 617                 r_refdef.viewblend[3] = bound(0.0f, r_refdef.viewblend[3] * gl_polyblend.value, 1.0f);
 618         }
 619 }
 620
 621 //============================================================================
 622
 623 /*
 624 =============
 625 V_Init
 626 =============
 627 */
 628 void V_Init (void)
 629 {
 630         Cmd_AddCommand ("v_cshift", V_cshift_f);
 631         Cmd_AddCommand ("bf", V_BonusFlash_f);
 632         Cmd_AddCommand ("centerview", V_StartPitchDrift);
 633
 634         Cvar_RegisterVariable (&v_centermove);
 635         Cvar_RegisterVariable (&v_centerspeed);
 636
 637         Cvar_RegisterVariable (&v_iyaw_cycle);
 638         Cvar_RegisterVariable (&v_iroll_cycle);
 639         Cvar_RegisterVariable (&v_ipitch_cycle);
 640         Cvar_RegisterVariable (&v_iyaw_level);
 641         Cvar_RegisterVariable (&v_iroll_level);
 642         Cvar_RegisterVariable (&v_ipitch_level);
 643
 644         Cvar_RegisterVariable (&v_idlescale);
 645         Cvar_RegisterVariable (&crosshair);
 646
 647         Cvar_RegisterVariable (&cl_rollspeed);
 648         Cvar_RegisterVariable (&cl_rollangle);
 649         Cvar_RegisterVariable (&cl_bob);
 650         Cvar_RegisterVariable (&cl_bobcycle);
 651         Cvar_RegisterVariable (&cl_bobup);
 652         Cvar_RegisterVariable (&cl_bobmodel);
 653         Cvar_RegisterVariable (&cl_bobmodel_side);
 654         Cvar_RegisterVariable (&cl_bobmodel_up);
 655         Cvar_RegisterVariable (&cl_bobmodel_speed);
 656
 657         Cvar_RegisterVariable (&v_kicktime);
 658         Cvar_RegisterVariable (&v_kickroll);
 659         Cvar_RegisterVariable (&v_kickpitch);
 660
 661         Cvar_RegisterVariable (&cl_stairsmoothspeed);
 662
 663         Cvar_RegisterVariable (&chase_back);
 664         Cvar_RegisterVariable (&chase_up);
 665         Cvar_RegisterVariable (&chase_active);
 666         if (gamemode == GAME_GOODVSBAD2)
 667                 Cvar_RegisterVariable (&chase_stevie);
 668
 669         Cvar_RegisterVariable (&v_deathtilt);
 670 }
 671