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
  43 cvar_t cl_bobmodel = {CVAR_SAVE, "cl_bobmodel", "1", "enables gun bobbing"};
  44 cvar_t cl_bobmodel_side = {CVAR_SAVE, "cl_bobmodel_side", "0.15", "gun bobbing sideways sway amount"};
  45 cvar_t cl_bobmodel_up = {CVAR_SAVE, "cl_bobmodel_up", "0.06", "gun bobbing upward movement amount"};
  46 cvar_t cl_bobmodel_speed = {CVAR_SAVE, "cl_bobmodel_speed", "7", "gun bobbing speed"};
  47
  48 cvar_t cl_leanmodel_side = {CVAR_SAVE, "cl_leanmodel_side", "1", "enables gun leaning sideways"};
  49 cvar_t cl_leanmodel_side_speed = {CVAR_SAVE, "cl_leanmodel_side_speed", "2.5", "gun leaning sideways speed"};
  50 cvar_t cl_leanmodel_side_limit = {CVAR_SAVE, "cl_leanmodel_side_limit", "7.5", "gun leaning sideways limit"};
  51 cvar_t cl_leanmodel_up = {CVAR_SAVE, "cl_leanmodel_up", "1", "enables gun leaning upward"};
  52 cvar_t cl_leanmodel_up_speed = {CVAR_SAVE, "cl_leanmodel_up_speed", "2", "gun leaning upward speed"};
  53 cvar_t cl_leanmodel_up_limit = {CVAR_SAVE, "cl_leanmodel_up_limit", "5", "gun leaning upward limit"};
  54
  55 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"};
  56
  57 cvar_t v_kicktime = {0, "v_kicktime", "0.5", "how long a view kick from damage lasts"};
  58 cvar_t v_kickroll = {0, "v_kickroll", "0.6", "how much a view kick from damage rolls your view"};
  59 cvar_t v_kickpitch = {0, "v_kickpitch", "0.6", "how much a view kick from damage pitches your view"};
  60
  61 cvar_t v_iyaw_cycle = {0, "v_iyaw_cycle", "2", "v_idlescale yaw speed"};
  62 cvar_t v_iroll_cycle = {0, "v_iroll_cycle", "0.5", "v_idlescale roll speed"};
  63 cvar_t v_ipitch_cycle = {0, "v_ipitch_cycle", "1", "v_idlescale pitch speed"};
  64 cvar_t v_iyaw_level = {0, "v_iyaw_level", "0.3", "v_idlescale yaw amount"};
  65 cvar_t v_iroll_level = {0, "v_iroll_level", "0.1", "v_idlescale roll amount"};
  66 cvar_t v_ipitch_level = {0, "v_ipitch_level", "0.3", "v_idlescale pitch amount"};
  67
  68 cvar_t v_idlescale = {0, "v_idlescale", "0", "how much of the quake 'drunken view' effect to use"};
  69
  70 cvar_t crosshair = {CVAR_SAVE, "crosshair", "0", "selects crosshair to use (0 is none)"};
  71
  72 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)"};
  73 cvar_t v_centerspeed = {0, "v_centerspeed","500", "how fast the view centers itself"};
  74
  75 cvar_t cl_stairsmoothspeed = {CVAR_SAVE, "cl_stairsmoothspeed", "160", "how fast your view moves upward/downward when running up/down stairs"};
  76
  77 cvar_t chase_back = {CVAR_SAVE, "chase_back", "48", "chase cam distance from the player"};
  78 cvar_t chase_up = {CVAR_SAVE, "chase_up", "24", "chase cam distance from the player"};
  79 cvar_t chase_active = {CVAR_SAVE, "chase_active", "0", "enables chase cam"};
  80 cvar_t chase_overhead = {CVAR_SAVE, "chase_overhead", "0", "chase cam looks straight down if this is not zero"};
  81 // GAME_GOODVSBAD2
  82 cvar_t chase_stevie = {0, "chase_stevie", "0", "chase cam view from above (used only by GoodVsBad2)"};
  83
  84 cvar_t v_deathtilt = {0, "v_deathtilt", "1", "whether to use sideways view when dead"};
  85 cvar_t v_deathtiltangle = {0, "v_deathtiltangle", "80", "what roll angle to use when tilting the view while dead"};
  86
  87 // Prophecy camera pitchangle by Alexander "motorsep" Zubov
  88 cvar_t chase_pitchangle = {CVAR_SAVE, "chase_pitchangle", "55", "chase cam pitch angle"};
  89
  90 float   v_dmg_time, v_dmg_roll, v_dmg_pitch;
  91
  92
  93 /*
  94 ===============
  95 V_CalcRoll
  96
  97 Used by view and sv_user
  98 ===============
  99 */
 100 float V_CalcRoll (vec3_t angles, vec3_t velocity)
 101 {
 102         vec3_t  right;
 103         float   sign;
 104         float   side;
 105         float   value;
 106
 107         AngleVectors (angles, NULL, right, NULL);
 108         side = DotProduct (velocity, right);
 109         sign = side < 0 ? -1 : 1;
 110         side = fabs(side);
 111
 112         value = cl_rollangle.value;
 113
 114         if (side < cl_rollspeed.value)
 115                 side = side * value / cl_rollspeed.value;
 116         else
 117                 side = value;
 118
 119         return side*sign;
 120
 121 }
 122
 123 void V_StartPitchDrift (void)
 124 {
 125         if (cl.laststop == cl.time)
 126                 return;         // something else is keeping it from drifting
 127
 128         if (cl.nodrift || !cl.pitchvel)
 129         {
 130                 cl.pitchvel = v_centerspeed.value;
 131                 cl.nodrift = false;
 132                 cl.driftmove = 0;
 133         }
 134 }
 135
 136 void V_StopPitchDrift (void)
 137 {
 138         cl.laststop = cl.time;
 139         cl.nodrift = true;
 140         cl.pitchvel = 0;
 141 }
 142
 143 /*
 144 ===============
 145 V_DriftPitch
 146
 147 Moves the client pitch angle towards cl.idealpitch sent by the server.
 148
 149 If the user is adjusting pitch manually, either with lookup/lookdown,
 150 mlook and mouse, or klook and keyboard, pitch drifting is constantly stopped.
 151
 152 Drifting is enabled when the center view key is hit, mlook is released and
 153 lookspring is non 0, or when
 154 ===============
 155 */
 156 void V_DriftPitch (void)
 157 {
 158         float           delta, move;
 159
 160         if (noclip_anglehack || !cl.onground || cls.demoplayback )
 161         {
 162                 cl.driftmove = 0;
 163                 cl.pitchvel = 0;
 164                 return;
 165         }
 166
 167 // don't count small mouse motion
 168         if (cl.nodrift)
 169         {
 170                 if ( fabs(cl.cmd.forwardmove) < cl_forwardspeed.value)
 171                         cl.driftmove = 0;
 172                 else
 173                         cl.driftmove += cl.realframetime;
 174
 175                 if ( cl.driftmove > v_centermove.value)
 176                 {
 177                         V_StartPitchDrift ();
 178                 }
 179                 return;
 180         }
 181
 182         delta = cl.idealpitch - cl.viewangles[PITCH];
 183
 184         if (!delta)
 185         {
 186                 cl.pitchvel = 0;
 187                 return;
 188         }
 189
 190         move = cl.realframetime * cl.pitchvel;
 191         cl.pitchvel += cl.realframetime * v_centerspeed.value;
 192
 193         if (delta > 0)
 194         {
 195                 if (move > delta)
 196                 {
 197                         cl.pitchvel = 0;
 198                         move = delta;
 199                 }
 200                 cl.viewangles[PITCH] += move;
 201         }
 202         else if (delta < 0)
 203         {
 204                 if (move > -delta)
 205                 {
 206                         cl.pitchvel = 0;
 207                         move = -delta;
 208                 }
 209                 cl.viewangles[PITCH] -= move;
 210         }
 211 }
 212
 213
 214 /*
 215 ==============================================================================
 216
 217                                                 SCREEN FLASHES
 218
 219 ==============================================================================
 220 */
 221
 222
 223 /*
 224 ===============
 225 V_ParseDamage
 226 ===============
 227 */
 228 void V_ParseDamage (void)
 229 {
 230         int armor, blood;
 231         vec3_t from;
 232         //vec3_t forward, right;
 233         vec3_t localfrom;
 234         entity_t *ent;
 235         //float side;
 236         float count;
 237
 238         armor = MSG_ReadByte ();
 239         blood = MSG_ReadByte ();
 240         MSG_ReadVector(from, cls.protocol);
 241
 242         // Send the Dmg Globals to CSQC
 243         CL_VM_UpdateDmgGlobals(blood, armor, from);
 244
 245         count = blood*0.5 + armor*0.5;
 246         if (count < 10)
 247                 count = 10;
 248
 249         cl.faceanimtime = cl.time + 0.2;                // put sbar face into pain frame
 250
 251         cl.cshifts[CSHIFT_DAMAGE].percent += 3*count;
 252         cl.cshifts[CSHIFT_DAMAGE].alphafade = 150;
 253         if (cl.cshifts[CSHIFT_DAMAGE].percent < 0)
 254                 cl.cshifts[CSHIFT_DAMAGE].percent = 0;
 255         if (cl.cshifts[CSHIFT_DAMAGE].percent > 150)
 256                 cl.cshifts[CSHIFT_DAMAGE].percent = 150;
 257
 258         if (armor > blood)
 259         {
 260                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 200;
 261                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 100;
 262                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 100;
 263         }
 264         else if (armor)
 265         {
 266                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 220;
 267                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 50;
 268                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 50;
 269         }
 270         else
 271         {
 272                 cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 255;
 273                 cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 0;
 274                 cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 0;
 275         }
 276
 277         // calculate view angle kicks
 278         if (cl.entities[cl.viewentity].state_current.active)
 279         {
 280                 ent = &cl.entities[cl.viewentity];
 281                 Matrix4x4_Transform(&ent->render.inversematrix, from, localfrom);
 282                 VectorNormalize(localfrom);
 283                 v_dmg_pitch = count * localfrom[0] * v_kickpitch.value;
 284                 v_dmg_roll = count * localfrom[1] * v_kickroll.value;
 285                 v_dmg_time = v_kicktime.value;
 286         }
 287 }
 288
 289 static cshift_t v_cshift;
 290
 291 /*
 292 ==================
 293 V_cshift_f
 294 ==================
 295 */
 296 static void V_cshift_f (void)
 297 {
 298         v_cshift.destcolor[0] = atof(Cmd_Argv(1));
 299         v_cshift.destcolor[1] = atof(Cmd_Argv(2));
 300         v_cshift.destcolor[2] = atof(Cmd_Argv(3));
 301         v_cshift.percent = atof(Cmd_Argv(4));
 302 }
 303
 304
 305 /*
 306 ==================
 307 V_BonusFlash_f
 308
 309 When you run over an item, the server sends this command
 310 ==================
 311 */
 312 static void V_BonusFlash_f (void)
 313 {
 314         if(Cmd_Argc() == 1)
 315         {
 316                 cl.cshifts[CSHIFT_BONUS].destcolor[0] = 215;
 317                 cl.cshifts[CSHIFT_BONUS].destcolor[1] = 186;
 318                 cl.cshifts[CSHIFT_BONUS].destcolor[2] = 69;
 319                 cl.cshifts[CSHIFT_BONUS].percent = 50;
 320                 cl.cshifts[CSHIFT_BONUS].alphafade = 100;
 321         }
 322         else if(Cmd_Argc() >= 4 && Cmd_Argc() <= 6)
 323         {
 324                 cl.cshifts[CSHIFT_BONUS].destcolor[0] = atof(Cmd_Argv(1)) * 255;
 325                 cl.cshifts[CSHIFT_BONUS].destcolor[1] = atof(Cmd_Argv(2)) * 255;
 326                 cl.cshifts[CSHIFT_BONUS].destcolor[2] = atof(Cmd_Argv(3)) * 255;
 327                 if(Cmd_Argc() >= 5)
 328                         cl.cshifts[CSHIFT_BONUS].percent = atof(Cmd_Argv(4)) * 255; // yes, these are HEXADECIMAL percent ;)
 329                 else
 330                         cl.cshifts[CSHIFT_BONUS].percent = 50;
 331                 if(Cmd_Argc() >= 6)
 332                         cl.cshifts[CSHIFT_BONUS].alphafade = atof(Cmd_Argv(5)) * 255;
 333                 else
 334                         cl.cshifts[CSHIFT_BONUS].alphafade = 100;
 335         }
 336         else
 337                 Con_Printf("usage:\nbf, or bf R G B [A [alphafade]]\n");
 338 }
 339
 340 /*
 341 ==============================================================================
 342
 343                                                 VIEW RENDERING
 344
 345 ==============================================================================
 346 */
 347
 348 extern matrix4x4_t viewmodelmatrix;
 349
 350 #include "cl_collision.h"
 351 #include "csprogs.h"
 352
 353 /*
 354 ==================
 355 V_CalcRefdef
 356
 357 ==================
 358 */
 359 #if 0
 360 static vec3_t eyeboxmins = {-16, -16, -24};
 361 static vec3_t eyeboxmaxs = { 16,  16,  32};
 362 #endif
 363 float viewmodel_push_x, viewmodel_push_y;
 364 vec3_t gunorg_follow;
 365 void V_CalcRefdef (void)
 366 {
 367         entity_t *ent;
 368         float vieworg[3], gunorg[3], viewangles[3], gunangles[3], smoothtime;
 369 #if 0
 370 // begin of chase camera bounding box size for proper collisions by Alexander Zubov
 371         vec3_t camboxmins = {-3, -3, -3};
 372         vec3_t camboxmaxs = {3, 3, 3};
 373 // end of chase camera bounding box size for proper collisions by Alexander Zubov
 374 #endif
 375         trace_t trace;
 376         VectorClear(gunorg);
 377         viewmodelmatrix = identitymatrix;
 378         r_refdef.view.matrix = identitymatrix;
 379         if (cls.state == ca_connected && cls.signon == SIGNONS)
 380         {
 381                 // ent is the view entity (visible when out of body)
 382                 ent = &cl.entities[cl.viewentity];
 383                 // player can look around, so take the origin from the entity,
 384                 // and the angles from the input system
 385                 Matrix4x4_OriginFromMatrix(&ent->render.matrix, vieworg);
 386                 VectorCopy(cl.viewangles, viewangles);
 387
 388                 // calculate how much time has passed since the last V_CalcRefdef
 389                 smoothtime = bound(0, cl.time - cl.stairsmoothtime, 0.1);
 390                 cl.stairsmoothtime = cl.time;
 391
 392                 // fade damage flash
 393                 if (v_dmg_time > 0)
 394                         v_dmg_time -= bound(0, smoothtime, 0.1);
 395
 396                 if (cl.intermission)
 397                 {
 398                         // entity is a fixed camera, just copy the matrix
 399                         if (cls.protocol == PROTOCOL_QUAKEWORLD)
 400                                 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);
 401                         else
 402                         {
 403                                 r_refdef.view.matrix = ent->render.matrix;
 404                                 Matrix4x4_AdjustOrigin(&r_refdef.view.matrix, 0, 0, cl.stats[STAT_VIEWHEIGHT]);
 405                         }
 406                         viewmodelmatrix = r_refdef.view.matrix;
 407                 }
 408                 else
 409                 {
 410                         // smooth stair stepping, but only if onground and enabled
 411                         if (!cl.onground || cl_stairsmoothspeed.value <= 0)
 412                                 cl.stairsmoothz = vieworg[2];
 413                         else
 414                         {
 415                                 if (cl.stairsmoothz < vieworg[2])
 416                                         vieworg[2] = cl.stairsmoothz = bound(vieworg[2] - 16, cl.stairsmoothz + smoothtime * cl_stairsmoothspeed.value, vieworg[2]);
 417                                 else if (cl.stairsmoothz > vieworg[2])
 418                                         vieworg[2] = cl.stairsmoothz = bound(vieworg[2], cl.stairsmoothz - smoothtime * cl_stairsmoothspeed.value, vieworg[2] + 16);
 419                         }
 420
 421                         // apply qw weapon recoil effect (this did not work in QW)
 422                         // TODO: add a cvar to disable this
 423                         viewangles[PITCH] += cl.qw_weaponkick;
 424
 425                         // apply the viewofs (even if chasecam is used)
 426                         vieworg[2] += cl.stats[STAT_VIEWHEIGHT];
 427
 428                         if (chase_active.value)
 429                         {
 430                                 // observing entity from third person. Added "campitch" by Alexander "motorsep" Zubov
 431                                 vec_t camback, camup, dist, campitch, forward[3], chase_dest[3];
 432
 433                                 camback = chase_back.value;
 434                                 camup = chase_up.value;
 435                                 campitch = chase_pitchangle.value;
 436
 437                                 AngleVectors(viewangles, forward, NULL, NULL);
 438
 439                                 if (chase_overhead.integer)
 440                                 {
 441 #if 1
 442                                         vec3_t offset;
 443                                         vec3_t bestvieworg;
 444 #endif
 445                                         vec3_t up;
 446                                         viewangles[PITCH] = 0;
 447                                         AngleVectors(viewangles, forward, NULL, up);
 448                                         // trace a little further so it hits a surface more consistently (to avoid 'snapping' on the edge of the range)
 449                                         chase_dest[0] = vieworg[0] - forward[0] * camback + up[0] * camup;
 450                                         chase_dest[1] = vieworg[1] - forward[1] * camback + up[1] * camup;
 451                                         chase_dest[2] = vieworg[2] - forward[2] * camback + up[2] * camup;
 452 #if 0
 453 #if 1
 454                                         //trace = CL_TraceLine(vieworg, eyeboxmins, eyeboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 455                                         trace = CL_TraceLine(vieworg, camboxmins, camboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 456 #else
 457                                         //trace = CL_TraceBox(vieworg, eyeboxmins, eyeboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 458                                         trace = CL_TraceBox(vieworg, camboxmins, camboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 459 #endif
 460                                         VectorCopy(trace.endpos, vieworg);
 461                                         vieworg[2] -= 8;
 462 #else
 463                                         // trace from first person view location to our chosen third person view location
 464 #if 1
 465                                         trace = CL_TraceLine(vieworg, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 466 #else
 467                                         trace = CL_TraceBox(vieworg, camboxmins, camboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 468 #endif
 469                                         VectorCopy(trace.endpos, bestvieworg);
 470                                         offset[2] = 0;
 471                                         for (offset[0] = -16;offset[0] <= 16;offset[0] += 8)
 472                                         {
 473                                                 for (offset[1] = -16;offset[1] <= 16;offset[1] += 8)
 474                                                 {
 475                                                         AngleVectors(viewangles, NULL, NULL, up);
 476                                                         chase_dest[0] = vieworg[0] - forward[0] * camback + up[0] * camup + offset[0];
 477                                                         chase_dest[1] = vieworg[1] - forward[1] * camback + up[1] * camup + offset[1];
 478                                                         chase_dest[2] = vieworg[2] - forward[2] * camback + up[2] * camup + offset[2];
 479 #if 1
 480                                                         trace = CL_TraceLine(vieworg, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 481 #else
 482                                                         trace = CL_TraceBox(vieworg, camboxmins, camboxmaxs, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 483 #endif
 484                                                         if (bestvieworg[2] > trace.endpos[2])
 485                                                                 bestvieworg[2] = trace.endpos[2];
 486                                                 }
 487                                         }
 488                                         bestvieworg[2] -= 8;
 489                                         VectorCopy(bestvieworg, vieworg);
 490 #endif
 491                                         viewangles[PITCH] = campitch;
 492                                 }
 493                                 else
 494                                 {
 495                                         if (gamemode == GAME_GOODVSBAD2 && chase_stevie.integer)
 496                                         {
 497                                                 // look straight down from high above
 498                                                 viewangles[PITCH] = 90;
 499                                                 camback = 2048;
 500                                                 VectorSet(forward, 0, 0, -1);
 501                                         }
 502
 503                                         // trace a little further so it hits a surface more consistently (to avoid 'snapping' on the edge of the range)
 504                                         dist = -camback - 8;
 505                                         chase_dest[0] = vieworg[0] + forward[0] * dist;
 506                                         chase_dest[1] = vieworg[1] + forward[1] * dist;
 507                                         chase_dest[2] = vieworg[2] + forward[2] * dist + camup;
 508                                         trace = CL_TraceLine(vieworg, chase_dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, true, false, NULL, false);
 509                                         VectorMAMAM(1, trace.endpos, 8, forward, 4, trace.plane.normal, vieworg);
 510                                 }
 511                         }
 512                         else
 513                         {
 514                                 // first person view from entity
 515                                 // angles
 516                                 if (cl.stats[STAT_HEALTH] <= 0 && v_deathtilt.integer)
 517                                         viewangles[ROLL] = v_deathtiltangle.value;
 518                                 VectorAdd(viewangles, cl.punchangle, viewangles);
 519                                 viewangles[ROLL] += V_CalcRoll(cl.viewangles, cl.movement_velocity);
 520                                 if (v_dmg_time > 0)
 521                                 {
 522                                         viewangles[ROLL] += v_dmg_time/v_kicktime.value*v_dmg_roll;
 523                                         viewangles[PITCH] += v_dmg_time/v_kicktime.value*v_dmg_pitch;
 524                                 }
 525                                 // origin
 526                                 VectorAdd(vieworg, cl.punchvector, vieworg);
 527                                 if (cl.stats[STAT_HEALTH] > 0)
 528                                 {
 529                                         double xyspeed, bob;
 530
 531                                         xyspeed = sqrt(cl.movement_velocity[0]*cl.movement_velocity[0] + cl.movement_velocity[1]*cl.movement_velocity[1]);
 532                                         if (cl_bob.value && cl_bobcycle.value)
 533                                         {
 534                                                 float cycle;
 535                                                 // LordHavoc: this code is *weird*, but not replacable (I think it
 536                                                 // should be done in QC on the server, but oh well, quake is quake)
 537                                                 // LordHavoc: figured out bobup: the time at which the sin is at 180
 538                                                 // degrees (which allows lengthening or squishing the peak or valley)
 539                                                 cycle = cl.time / cl_bobcycle.value;
 540                                                 cycle -= (int) cycle;
 541                                                 if (cycle < cl_bobup.value)
 542                                                         cycle = sin(M_PI * cycle / cl_bobup.value);
 543                                                 else
 544                                                         cycle = sin(M_PI + M_PI * (cycle-cl_bobup.value)/(1.0 - cl_bobup.value));
 545                                                 // bob is proportional to velocity in the xy plane
 546                                                 // (don't count Z, or jumping messes it up)
 547                                                 bob = xyspeed * cl_bob.value;
 548                                                 bob = bob*0.3 + bob*0.7*cycle;
 549                                                 vieworg[2] += bound(-7, bob, 4);
 550                                         }
 551
 552                                         if (cl_bob.value && cl_bobmodel.value)
 553                                         {
 554                                                 // calculate for swinging gun model
 555                                                 // the gun bobs when running on the ground, but doesn't bob when you're in the air.
 556                                                 // Sajt: I tried to smooth out the transitions between bob and no bob, which works
 557                                                 // for the most part, but for some reason when you go through a message trigger or
 558                                                 // pick up an item or anything like that it will momentarily jolt the gun.
 559                                                 vec3_t forward, right, up;
 560                                                 float bspeed;
 561                                                 float s;
 562                                                 float t;
 563
 564                                                 s = cl.time * cl_bobmodel_speed.value;
 565                                                 if (cl.onground)
 566                                                 {
 567                                                         if (cl.time - cl.hitgroundtime < 0.2)
 568                                                         {
 569                                                                 // just hit the ground, speed the bob back up over the next 0.2 seconds
 570                                                                 t = cl.time - cl.hitgroundtime;
 571                                                                 t = bound(0, t, 0.2);
 572                                                                 t *= 5;
 573                                                         }
 574                                                         else
 575                                                                 t = 1;
 576                                                 }
 577                                                 else
 578                                                 {
 579                                                         // recently left the ground, slow the bob down over the next 0.2 seconds
 580                                                         t = cl.time - cl.lastongroundtime;
 581                                                         t = 0.2 - bound(0, t, 0.2);
 582                                                         t *= 5;
 583                                                 }
 584
 585                                                 bspeed = bound (0, xyspeed, 400) * 0.01f;
 586                                                 AngleVectors (gunangles, forward, right, up);
 587                                                 bob = bspeed * cl_bobmodel_side.value * cl_viewmodel_scale.value * sin (s) * t;
 588                                                 VectorMA (gunorg, bob, right, gunorg);
 589                                                 bob = bspeed * cl_bobmodel_up.value * cl_viewmodel_scale.value * cos (s * 2) * t;
 590                                                 VectorMA (gunorg, bob, up, gunorg);
 591                                         }
 592
 593                                         float ef_speed = cl.realframetime * cl_leanmodel_up_speed.value;
 594
 595                                         // gun model leaning code
 596
 597                                         // TODO 1 (done): Fix bug where model does a 360* turn when YAW jumps around the 0 - 360 rotation border
 598                                         // TODO 2 (done): Implement limits (weapon model must not lean past a certain limit)
 599                                         // TODO 3 (done): Cvar everything once the first TODOs are ready
 600
 601                                         if(cl_leanmodel_up.value && cl_leanmodel_up_speed.value * ef_speed < 1) // bad things happen if this goes over 1, so prevent the effect
 602                                         {
 603                                                 // prevent the gun from doing a 360* rotation when going around the 0 <-> 360 border
 604                                                 if(cl.viewangles[PITCH] - viewmodel_push_x >= 180)
 605                                                         viewmodel_push_x += 360;
 606                                                 if(viewmodel_push_x - cl.viewangles[PITCH] >= 180)
 607                                                         viewmodel_push_x -= 360;
 608
 609                                                 if(viewmodel_push_x < cl.viewangles[PITCH])
 610                                                 {
 611                                                         if(cl.viewangles[PITCH] - viewmodel_push_x > cl_leanmodel_up_limit.value)
 612                                                                 viewmodel_push_x = cl.viewangles[PITCH] - cl_leanmodel_up_limit.value;
 613                                                         else
 614                                                                 viewmodel_push_x += (cl.viewangles[PITCH] - viewmodel_push_x) * cl_leanmodel_up_speed.value * ef_speed;
 615                                                 }
 616                                                 if(viewmodel_push_x > cl.viewangles[PITCH])
 617                                                 {
 618                                                         if(viewmodel_push_x - cl.viewangles[PITCH] > cl_leanmodel_up_limit.value)
 619                                                                 viewmodel_push_x = cl.viewangles[PITCH] + cl_leanmodel_up_limit.value;
 620                                                         else
 621                                                                 viewmodel_push_x -= (viewmodel_push_x - cl.viewangles[PITCH]) * cl_leanmodel_up_speed.value * ef_speed;
 622                                                 }
 623                                         }
 624                                         else
 625                                                 viewmodel_push_x = cl.viewangles[PITCH];
 626
 627                                         if(cl_leanmodel_side.value && cl_leanmodel_side_speed.value * ef_speed < 1) // bad things happen if this goes over 1, so prevent the effect
 628                                         {
 629                                                 // prevent the gun from doing a 360* rotation when going around the 0 <-> 360 border
 630                                                 if(cl.viewangles[YAW] - viewmodel_push_y >= 180)
 631                                                         viewmodel_push_y += 360;
 632                                                 if(viewmodel_push_y - cl.viewangles[YAW] >= 180)
 633                                                         viewmodel_push_y -= 360;
 634
 635                                                 if(viewmodel_push_y < cl.viewangles[YAW])
 636                                                 {
 637                                                         if(cl.viewangles[YAW] - viewmodel_push_y > cl_leanmodel_side_limit.value)
 638                                                                 viewmodel_push_y = cl.viewangles[YAW] - cl_leanmodel_side_limit.value;
 639                                                         else
 640                                                                 viewmodel_push_y += (cl.viewangles[YAW] - viewmodel_push_y) * cl_leanmodel_side_speed.value * ef_speed;
 641                                                 }
 642                                                 if(viewmodel_push_y > cl.viewangles[YAW])
 643                                                 {
 644                                                         if(viewmodel_push_y - cl.viewangles[YAW] > cl_leanmodel_side_limit.value)
 645                                                                 viewmodel_push_y = cl.viewangles[YAW] + cl_leanmodel_side_limit.value;
 646                                                         else
 647                                                                 viewmodel_push_y -= (viewmodel_push_y - cl.viewangles[YAW]) * cl_leanmodel_side_speed.value * ef_speed;
 648                                                 }
 649                                         }
 650                                         else
 651                                                 viewmodel_push_y = cl.viewangles[YAW];
 652
 653                                         VectorSet(gunangles, viewmodel_push_x, viewmodel_push_y, viewangles[2]);
 654
 655                                 // gun model following code
 656
 657                                 if(gunorg_follow[0] < vieworg[0])
 658                                 {
 659                                         if(vieworg[0] - gunorg_follow[0] > 5)
 660                                                 gunorg_follow[0] = vieworg[0] - 5;
 661                                         else
 662                                                 gunorg_follow[0] += (vieworg[0] - gunorg_follow[0]) * 5 * ef_speed;
 663                                 }
 664                                 if(gunorg_follow[0] > vieworg[0])
 665                                 {
 666                                         if(gunorg_follow[0] - vieworg[0] > 5)
 667                                                 gunorg_follow[0] = vieworg[0] + 5;
 668                                         else
 669                                                 gunorg_follow[0] -= (gunorg_follow[0] - vieworg[0]) * 5 * ef_speed;
 670                                 }
 671
 672                                 if(gunorg_follow[1] < vieworg[1])
 673                                 {
 674                                         if(vieworg[1] - gunorg_follow[1] > 5)
 675                                                 gunorg_follow[1] = vieworg[1] - 5;
 676                                         else
 677                                                 gunorg_follow[1] += (vieworg[1] - gunorg_follow[1]) * 5 * ef_speed;
 678                                 }
 679                                 if(gunorg_follow[1] > vieworg[1])
 680                                 {
 681                                         if(gunorg_follow[1] - vieworg[1] > 5)
 682                                                 gunorg_follow[1] = vieworg[1] + 5;
 683                                         else
 684                                                 gunorg_follow[1] -= (gunorg_follow[1] - vieworg[1]) * 5 * ef_speed;
 685                                 }
 686
 687                                 if(gunorg_follow[2] < vieworg[2])
 688                                 {
 689                                         if(vieworg[2] - gunorg_follow[2] > 5)
 690                                                 gunorg_follow[2] = vieworg[2] - 5;
 691                                         else
 692                                                 gunorg_follow[2] += (vieworg[2] - gunorg_follow[2]) * 5 * ef_speed;
 693                                 }
 694                                 if(gunorg_follow[2] > vieworg[2])
 695                                 {
 696                                         if(gunorg_follow[2] - vieworg[2] > 5)
 697                                                 gunorg_follow[2] = vieworg[2] + 5;
 698                                         else
 699                                                 gunorg_follow[2] -= (gunorg_follow[2] - vieworg[2]) * 5 * ef_speed;
 700                                 }
 701
 702                                 VectorCopy(gunorg_follow, gunorg);
 703                                 }
 704                         }
 705                         // calculate a view matrix for rendering the scene
 706                         if (v_idlescale.value)
 707                                 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);
 708                         else
 709                                 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);
 710                         // calculate a viewmodel matrix for use in view-attached entities
 711                         Matrix4x4_CreateFromQuakeEntity(&viewmodelmatrix, gunorg[0], gunorg[1], gunorg[2], gunangles[0], gunangles[1], gunangles[2], cl_viewmodel_scale.value);
 712                         VectorCopy(vieworg, cl.csqc_origin);
 713                         VectorCopy(viewangles, cl.csqc_angles);
 714                 }
 715         }
 716 }
 717
 718 void V_FadeViewFlashs(void)
 719 {
 720         // don't flash if time steps backwards
 721         if (cl.time <= cl.oldtime)
 722                 return;
 723         // drop the damage value
 724         cl.cshifts[CSHIFT_DAMAGE].percent -= (cl.time - cl.oldtime)*cl.cshifts[CSHIFT_DAMAGE].alphafade;
 725         if (cl.cshifts[CSHIFT_DAMAGE].percent <= 0)
 726                 cl.cshifts[CSHIFT_DAMAGE].percent = 0;
 727         // drop the bonus value
 728         cl.cshifts[CSHIFT_BONUS].percent -= (cl.time - cl.oldtime)*cl.cshifts[CSHIFT_BONUS].alphafade;
 729         if (cl.cshifts[CSHIFT_BONUS].percent <= 0)
 730                 cl.cshifts[CSHIFT_BONUS].percent = 0;
 731 }
 732
 733 void V_CalcViewBlend(void)
 734 {
 735         float a2;
 736         int j;
 737         r_refdef.viewblend[0] = 0;
 738         r_refdef.viewblend[1] = 0;
 739         r_refdef.viewblend[2] = 0;
 740         r_refdef.viewblend[3] = 0;
 741         r_refdef.frustumscale_x = 1;
 742         r_refdef.frustumscale_y = 1;
 743         if (cls.state == ca_connected && cls.signon == SIGNONS)
 744         {
 745                 // set contents color
 746                 int supercontents;
 747                 vec3_t vieworigin;
 748                 Matrix4x4_OriginFromMatrix(&r_refdef.view.matrix, vieworigin);
 749                 supercontents = CL_PointSuperContents(vieworigin);
 750                 if (supercontents & SUPERCONTENTS_LIQUIDSMASK)
 751                 {
 752                         r_refdef.frustumscale_x *= 1 - (((sin(cl.time * 4.7) + 1) * 0.015) * r_waterwarp.value);
 753                         r_refdef.frustumscale_y *= 1 - (((sin(cl.time * 3.0) + 1) * 0.015) * r_waterwarp.value);
 754                         if (supercontents & SUPERCONTENTS_LAVA)
 755                         {
 756                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 255;
 757                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
 758                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
 759                         }
 760                         else if (supercontents & SUPERCONTENTS_SLIME)
 761                         {
 762                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
 763                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 25;
 764                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 5;
 765                         }
 766                         else
 767                         {
 768                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 130;
 769                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
 770                                 cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 50;
 771                         }
 772                         cl.cshifts[CSHIFT_CONTENTS].percent = 150 * 0.5;
 773                 }
 774                 else
 775                 {
 776                         cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
 777                         cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 0;
 778                         cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
 779                         cl.cshifts[CSHIFT_CONTENTS].percent = 0;
 780                 }
 781
 782                 if (gamemode != GAME_TRANSFUSION)
 783                 {
 784                         if (cl.stats[STAT_ITEMS] & IT_QUAD)
 785                         {
 786                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
 787                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 0;
 788                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 255;
 789                                 cl.cshifts[CSHIFT_POWERUP].percent = 30;
 790                         }
 791                         else if (cl.stats[STAT_ITEMS] & IT_SUIT)
 792                         {
 793                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
 794                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
 795                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
 796                                 cl.cshifts[CSHIFT_POWERUP].percent = 20;
 797                         }
 798                         else if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY)
 799                         {
 800                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 100;
 801                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 100;
 802                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 100;
 803                                 cl.cshifts[CSHIFT_POWERUP].percent = 100;
 804                         }
 805                         else if (cl.stats[STAT_ITEMS] & IT_INVULNERABILITY)
 806                         {
 807                                 cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 255;
 808                                 cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
 809                                 cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
 810                                 cl.cshifts[CSHIFT_POWERUP].percent = 30;
 811                         }
 812                         else
 813                                 cl.cshifts[CSHIFT_POWERUP].percent = 0;
 814                 }
 815
 816                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[0] = v_cshift.destcolor[0];
 817                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[1] = v_cshift.destcolor[1];
 818                 cl.cshifts[CSHIFT_VCSHIFT].destcolor[2] = v_cshift.destcolor[2];
 819                 cl.cshifts[CSHIFT_VCSHIFT].percent = v_cshift.percent;
 820
 821                 // LordHavoc: fixed V_CalcBlend
 822                 for (j = 0;j < NUM_CSHIFTS;j++)
 823                 {
 824                         a2 = bound(0.0f, cl.cshifts[j].percent * (1.0f / 255.0f), 1.0f);
 825                         if (a2 > 0)
 826                         {
 827                                 VectorLerp(r_refdef.viewblend, a2, cl.cshifts[j].destcolor, r_refdef.viewblend);
 828                                 r_refdef.viewblend[3] = (1 - (1 - r_refdef.viewblend[3]) * (1 - a2)); // correct alpha multiply...  took a while to find it on the web
 829                         }
 830                 }
 831                 // saturate color (to avoid blending in black)
 832                 if (r_refdef.viewblend[3])
 833                 {
 834                         a2 = 1 / r_refdef.viewblend[3];
 835                         VectorScale(r_refdef.viewblend, a2, r_refdef.viewblend);
 836                 }
 837                 r_refdef.viewblend[0] = bound(0.0f, r_refdef.viewblend[0] * (1.0f/255.0f), 1.0f);
 838                 r_refdef.viewblend[1] = bound(0.0f, r_refdef.viewblend[1] * (1.0f/255.0f), 1.0f);
 839                 r_refdef.viewblend[2] = bound(0.0f, r_refdef.viewblend[2] * (1.0f/255.0f), 1.0f);
 840                 r_refdef.viewblend[3] = bound(0.0f, r_refdef.viewblend[3] * gl_polyblend.value, 1.0f);
 841
 842                 // Samual: Ugly hack, I know. But it's the best we can do since
 843                 // there is no way to detect client states from the engine.
 844                 if (cl.stats[STAT_HEALTH] <= 0 && cl.stats[STAT_HEALTH] != -666 &&
 845                         cl.stats[STAT_HEALTH] != -2342 && cl_deathfade.value > 0)
 846                 {
 847                         cl.deathfade += cl_deathfade.value * max(0.00001, cl.time - cl.oldtime);
 848                         cl.deathfade = bound(0.0f, cl.deathfade, 0.9f);
 849                 }
 850                 else
 851                         cl.deathfade = 0.0f;
 852
 853                 if(cl.deathfade > 0)
 854                 {
 855                         float a;
 856                         float deathfadevec[3] = {0.3f, 0.0f, 0.0f};
 857                         a = r_refdef.viewblend[3] + cl.deathfade - r_refdef.viewblend[3]*cl.deathfade;
 858                         if(a > 0)
 859                                 VectorMAM(r_refdef.viewblend[3] * (1 - cl.deathfade) / a, r_refdef.viewblend, cl.deathfade / a, deathfadevec, r_refdef.viewblend);
 860                         r_refdef.viewblend[3] = a;
 861                 }
 862         }
 863 }
 864
 865 //============================================================================
 866
 867 /*
 868 =============
 869 V_Init
 870 =============
 871 */
 872 void V_Init (void)
 873 {
 874         Cmd_AddCommand ("v_cshift", V_cshift_f, "sets tint color of view");
 875         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");
 876         Cmd_AddCommand ("centerview", V_StartPitchDrift, "gradually recenter view (stop looking up/down)");
 877
 878         Cvar_RegisterVariable (&v_centermove);
 879         Cvar_RegisterVariable (&v_centerspeed);
 880
 881         Cvar_RegisterVariable (&v_iyaw_cycle);
 882         Cvar_RegisterVariable (&v_iroll_cycle);
 883         Cvar_RegisterVariable (&v_ipitch_cycle);
 884         Cvar_RegisterVariable (&v_iyaw_level);
 885         Cvar_RegisterVariable (&v_iroll_level);
 886         Cvar_RegisterVariable (&v_ipitch_level);
 887
 888         Cvar_RegisterVariable (&v_idlescale);
 889         Cvar_RegisterVariable (&crosshair);
 890
 891         Cvar_RegisterVariable (&cl_rollspeed);
 892         Cvar_RegisterVariable (&cl_rollangle);
 893         Cvar_RegisterVariable (&cl_bob);
 894         Cvar_RegisterVariable (&cl_bobcycle);
 895         Cvar_RegisterVariable (&cl_bobup);
 896         Cvar_RegisterVariable (&cl_bobmodel);
 897         Cvar_RegisterVariable (&cl_bobmodel_side);
 898         Cvar_RegisterVariable (&cl_bobmodel_up);
 899         Cvar_RegisterVariable (&cl_bobmodel_speed);
 900
 901         Cvar_RegisterVariable (&cl_leanmodel_side);
 902         Cvar_RegisterVariable (&cl_leanmodel_side_speed);
 903         Cvar_RegisterVariable (&cl_leanmodel_side_limit);
 904         Cvar_RegisterVariable (&cl_leanmodel_up);
 905         Cvar_RegisterVariable (&cl_leanmodel_up_speed);
 906         Cvar_RegisterVariable (&cl_leanmodel_up_limit);
 907
 908         Cvar_RegisterVariable (&cl_viewmodel_scale);
 909
 910         Cvar_RegisterVariable (&v_kicktime);
 911         Cvar_RegisterVariable (&v_kickroll);
 912         Cvar_RegisterVariable (&v_kickpitch);
 913
 914         Cvar_RegisterVariable (&cl_stairsmoothspeed);
 915
 916         Cvar_RegisterVariable (&chase_back);
 917         Cvar_RegisterVariable (&chase_up);
 918         Cvar_RegisterVariable (&chase_active);
 919         Cvar_RegisterVariable (&chase_overhead);
 920         Cvar_RegisterVariable (&chase_pitchangle);
 921         if (gamemode == GAME_GOODVSBAD2)
 922                 Cvar_RegisterVariable (&chase_stevie);
 923
 924         Cvar_RegisterVariable (&v_deathtilt);
 925         Cvar_RegisterVariable (&v_deathtiltangle);
 926 }
 927