qcsrc/server/cl_weaponsystem.qc

   1 /*
   2 ===========================================================================
   3
   4   CLIENT WEAPONSYSTEM CODE
   5   Bring back W_Weaponframe
   6
   7 ===========================================================================
   8 */
   9
  10 .float weapon_frametime;
  11
  12 float W_WeaponRateFactor()
  13 {
  14         float t;
  15         t = 1.0 / g_weaponratefactor;
  16
  17         if(g_runematch)
  18         {
  19                 if(self.runes & RUNE_SPEED)
  20                 {
  21                         if(self.runes & CURSE_SLOW)
  22                                 t = t * autocvar_g_balance_rune_speed_combo_atkrate;
  23                         else
  24                                 t = t * autocvar_g_balance_rune_speed_atkrate;
  25                 }
  26                 else if(self.runes & CURSE_SLOW)
  27                 {
  28                         t = t * autocvar_g_balance_curse_slow_atkrate;
  29                 }
  30         }
  31
  32         return t;
  33 }
  34
  35 void W_SwitchWeapon_Force(entity e, float w)
  36 {
  37         e.cnt = e.switchweapon;
  38         e.switchweapon = w;
  39         e.selectweapon = w;
  40 }
  41
  42 .float antilag_debug;
  43
  44 // VorteX: static frame globals
  45 float WFRAME_DONTCHANGE = -1;
  46 float WFRAME_FIRE1 = 0;
  47 float WFRAME_FIRE2 = 1;
  48 float WFRAME_IDLE = 2;
  49 float WFRAME_RELOAD = 3;
  50 .float wframe;
  51
  52 void(float fr, float t, void() func) weapon_thinkf;
  53
  54 vector W_HitPlotUnnormalizedUntransform(vector screenforward, vector screenright, vector screenup, vector v)
  55 {
  56         vector ret;
  57         ret_x = screenright * v;
  58         ret_y = screenup * v;
  59         ret_z = screenforward * v;
  60         return ret;
  61 }
  62
  63 vector W_HitPlotNormalizedUntransform(vector org, entity targ, vector screenforward, vector screenright, vector screenup, vector v)
  64 {
  65         float i, j, k;
  66         vector mi, ma, thisv, myv, ret;
  67
  68         myv = W_HitPlotUnnormalizedUntransform(screenforward, screenright, screenup, org);
  69
  70         // x = 0..1 relative to hitbox; y = 0..1 relative to hitbox; z = distance
  71
  72         for(i = 0; i < 2; ++i) for(j = 0; j < 2; ++j) for(k = 0; k < 2; ++k)
  73         {
  74                 thisv = targ.origin;
  75                 if(i) thisv_x += targ.maxs_x; else thisv_x += targ.mins_x;
  76                 if(j) thisv_y += targ.maxs_y; else thisv_y += targ.mins_y;
  77                 if(k) thisv_z += targ.maxs_z; else thisv_z += targ.mins_z;
  78                 thisv = W_HitPlotUnnormalizedUntransform(screenforward, screenright, screenup, thisv);
  79                 if(i || j || k)
  80                 {
  81                         if(mi_x > thisv_x) mi_x = thisv_x; if(ma_x < thisv_x) ma_x = thisv_x;
  82                         if(mi_y > thisv_y) mi_y = thisv_y; if(ma_y < thisv_y) ma_y = thisv_y;
  83                         //if(mi_z > thisv_z) mi_z = thisv_z; if(ma_z < thisv_z) ma_y = thisv_z;
  84                 }
  85                 else
  86                 {
  87                         // first run
  88                         mi = ma = thisv;
  89                 }
  90         }
  91
  92         thisv = W_HitPlotUnnormalizedUntransform(screenforward, screenright, screenup, v);
  93         ret_x = (thisv_x - mi_x) / (ma_x - mi_x);
  94         ret_y = (thisv_y - mi_y) / (ma_y - mi_y);
  95         ret_z = thisv_z - myv_z;
  96         return ret;
  97 }
  98
  99 void W_HitPlotAnalysis(entity player, vector screenforward, vector screenright, vector screenup)
 100 {
 101         vector hitplot;
 102         vector org;
 103         float lag;
 104
 105         if(player.hitplotfh >= 0)
 106         {
 107                 lag = ANTILAG_LATENCY(player);
 108                 if(lag < 0.001)
 109                         lag = 0;
 110                 if(clienttype(player) != CLIENTTYPE_REAL)
 111                         lag = 0; // only antilag for clients
 112
 113                 org = player.origin + player.view_ofs;
 114                 traceline_antilag_force(player, org, org + screenforward * MAX_SHOT_DISTANCE, MOVE_NORMAL, player, lag);
 115                 if(trace_ent.flags & FL_CLIENT)
 116                 {
 117                         antilag_takeback(trace_ent, time - lag);
 118                         hitplot = W_HitPlotNormalizedUntransform(org, trace_ent, screenforward, screenright, screenup, trace_endpos);
 119                         antilag_restore(trace_ent);
 120                         fputs(player.hitplotfh, strcat(ftos(hitplot_x), " ", ftos(hitplot_y), " ", ftos(hitplot_z), " ", ftos(player.switchweapon), "\n"));
 121                         //print(strcat(ftos(hitplot_x), " ", ftos(hitplot_y), " ", ftos(hitplot_z), "\n"));
 122                 }
 123         }
 124 }
 125
 126 vector w_shotorg;
 127 vector w_shotdir;
 128 vector w_shotend;
 129
 130 .float prevstrengthsound;
 131 .float prevstrengthsoundattempt;
 132 void W_PlayStrengthSound(entity player) // void W_PlayStrengthSound
 133 {
 134                 if((!g_minstagib)
 135                         && (player.items & IT_STRENGTH)
 136                         && ((time > player.prevstrengthsound + autocvar_sv_strengthsound_antispam_time) // prevent insane sound spam
 137                         || (time > player.prevstrengthsoundattempt + autocvar_sv_strengthsound_antispam_refire_threshold)))
 138                 {
 139                         sound(player, CH_TRIGGER, "weapons/strength_fire.wav", VOL_BASE, ATTN_NORM);
 140                         player.prevstrengthsound = time;
 141                 }
 142                 player.prevstrengthsoundattempt = time;
 143 }
 144
 145 // this function calculates w_shotorg and w_shotdir based on the weapon model
 146 // offset, trueaim and antilag, and won't put w_shotorg inside a wall.
 147 // make sure you call makevectors first (FIXME?)
 148 void W_SetupShot_Dir_ProjectileSize_Range(entity ent, vector s_forward, vector mi, vector ma, float antilag, float recoil, string snd, float chan, float maxdamage, float range)
 149 {
 150         float nudge = 1; // added to traceline target and subtracted from result
 151         float oldsolid;
 152         vector vecs, dv;
 153         oldsolid = ent.dphitcontentsmask;
 154         if(ent.weapon == WEP_RIFLE)
 155                 ent.dphitcontentsmask = DPCONTENTS_BODY | DPCONTENTS_CORPSE;
 156         else
 157                 ent.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_CORPSE;
 158         if(antilag)
 159                 WarpZone_traceline_antilag(world, ent.origin + ent.view_ofs, ent.origin + ent.view_ofs + s_forward * range, MOVE_NORMAL, ent, ANTILAG_LATENCY(ent));
 160                 // passing world, because we do NOT want it to touch dphitcontentsmask
 161         else
 162                 WarpZone_TraceLine(ent.origin + ent.view_ofs, ent.origin + ent.view_ofs + s_forward * range, MOVE_NOMONSTERS, ent);
 163         ent.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_CORPSE;
 164
 165         vector vf, vr, vu;
 166         vf = v_forward;
 167         vr = v_right;
 168         vu = v_up;
 169         w_shotend = WarpZone_UnTransformOrigin(WarpZone_trace_transform, trace_endpos); // warpzone support
 170         v_forward = vf;
 171         v_right = vr;
 172         v_up = vu;
 173
 174         // un-adjust trueaim if shotend is too close
 175         if(vlen(w_shotend - (ent.origin + ent.view_ofs)) < autocvar_g_trueaim_minrange)
 176                 w_shotend = ent.origin + ent.view_ofs + s_forward * autocvar_g_trueaim_minrange;
 177
 178         // track max damage
 179         if(accuracy_canbegooddamage(ent))
 180                 accuracy_add(ent, ent.weapon, maxdamage, 0);
 181
 182         W_HitPlotAnalysis(ent, v_forward, v_right, v_up);
 183
 184         if(ent.weaponentity.movedir_x > 0)
 185                 vecs = ent.weaponentity.movedir;
 186         else
 187                 vecs = '0 0 0';
 188
 189         dv = v_right * -vecs_y + v_up * vecs_z;
 190         w_shotorg = ent.origin + ent.view_ofs + dv;
 191
 192         // now move the shotorg forward as much as requested if possible
 193         if(antilag)
 194         {
 195                 if(ent.antilag_debug)
 196                         tracebox_antilag(ent, w_shotorg, mi, ma, w_shotorg + v_forward * (vecs_x + nudge), MOVE_NORMAL, ent, ent.antilag_debug);
 197                 else
 198                         tracebox_antilag(ent, w_shotorg, mi, ma, w_shotorg + v_forward * (vecs_x + nudge), MOVE_NORMAL, ent, ANTILAG_LATENCY(ent));
 199         }
 200         else
 201                 tracebox(w_shotorg, mi, ma, w_shotorg + v_forward * (vecs_x + nudge), MOVE_NORMAL, ent);
 202         w_shotorg = trace_endpos - v_forward * nudge;
 203         // calculate the shotdir from the chosen shotorg
 204         w_shotdir = normalize(w_shotend - w_shotorg);
 205
 206         if (antilag)
 207         if (!ent.cvar_cl_noantilag)
 208         {
 209                 if (autocvar_g_antilag == 1) // switch to "ghost" if not hitting original
 210                 {
 211                         traceline(w_shotorg, w_shotorg + w_shotdir * range, MOVE_NORMAL, ent);
 212                         if (!trace_ent.takedamage)
 213                         {
 214                                 traceline_antilag_force (ent, w_shotorg, w_shotorg + w_shotdir * range, MOVE_NORMAL, ent, ANTILAG_LATENCY(ent));
 215                                 if (trace_ent.takedamage && trace_ent.classname == "player")
 216                                 {
 217                                         entity e;
 218                                         e = trace_ent;
 219                                         traceline(w_shotorg, e.origin, MOVE_NORMAL, ent);
 220                                         if(trace_ent == e)
 221                                                 w_shotdir = normalize(trace_ent.origin - w_shotorg);
 222                                 }
 223                         }
 224                 }
 225                 else if(autocvar_g_antilag == 3) // client side hitscan
 226                 {
 227                         // this part MUST use prydon cursor
 228                         if (ent.cursor_trace_ent)                 // client was aiming at someone
 229                         if (ent.cursor_trace_ent != ent)         // just to make sure
 230                         if (ent.cursor_trace_ent.takedamage)      // and that person is killable
 231                         if (ent.cursor_trace_ent.classname == "player") // and actually a player
 232                         {
 233                                 // verify that the shot would miss without antilag
 234                                 // (avoids an issue where guns would always shoot at their origin)
 235                                 traceline(w_shotorg, w_shotorg + w_shotdir * range, MOVE_NORMAL, ent);
 236                                 if (!trace_ent.takedamage)
 237                                 {
 238                                         // verify that the shot would hit if altered
 239                                         traceline(w_shotorg, ent.cursor_trace_ent.origin, MOVE_NORMAL, ent);
 240                                         if (trace_ent == ent.cursor_trace_ent)
 241                                                 w_shotdir = normalize(ent.cursor_trace_ent.origin - w_shotorg);
 242                                         else
 243                                                 print("antilag fail\n");
 244                                 }
 245                         }
 246                 }
 247         }
 248
 249         ent.dphitcontentsmask = oldsolid; // restore solid type (generally SOLID_SLIDEBOX)
 250
 251         if (!g_norecoil)
 252                 ent.punchangle_x = recoil * -1;
 253
 254         if (snd != "")
 255         {
 256                 sound (ent, chan, snd, VOL_BASE, ATTN_NORM);
 257                 W_PlayStrengthSound(ent);
 258         }
 259
 260         // nudge w_shotend so a trace to w_shotend hits
 261         w_shotend = w_shotend + normalize(w_shotend - w_shotorg) * nudge;
 262 }
 263
 264 #define W_SetupShot_Dir_ProjectileSize(ent,s_forward,mi,ma,antilag,recoil,snd,chan,maxdamage) W_SetupShot_Dir_ProjectileSize_Range(ent, s_forward, mi, ma, antilag, recoil, snd, chan, maxdamage, MAX_SHOT_DISTANCE)
 265 #define W_SetupShot_ProjectileSize(ent,mi,ma,antilag,recoil,snd,chan,maxdamage) W_SetupShot_Dir_ProjectileSize(ent, v_forward, mi, ma, antilag, recoil, snd, chan, maxdamage)
 266 #define W_SetupShot_Dir(ent,s_forward,antilag,recoil,snd,chan,maxdamage) W_SetupShot_Dir_ProjectileSize(ent, s_forward, '0 0 0', '0 0 0', antilag, recoil, snd, chan, maxdamage)
 267 #define W_SetupShot(ent,antilag,recoil,snd,chan,maxdamage) W_SetupShot_ProjectileSize(ent, '0 0 0', '0 0 0', antilag, recoil, snd, chan, maxdamage)
 268 #define W_SetupShot_Range(ent,antilag,recoil,snd,chan,maxdamage,range) W_SetupShot_Dir_ProjectileSize_Range(ent, v_forward, '0 0 0', '0 0 0', antilag, recoil, snd, chan, maxdamage, range)
 269
 270 float CL_Weaponentity_CustomizeEntityForClient()
 271 {
 272         self.viewmodelforclient = self.owner;
 273         if(other.classname == "spectator")
 274                 if(other.enemy == self.owner)
 275                         self.viewmodelforclient = other;
 276         return TRUE;
 277 }
 278
 279 /*
 280  * supported formats:
 281  *
 282  * 1. simple animated model, muzzle flash handling on h_ model:
 283  *    h_tuba.dpm, h_tuba.dpm.framegroups - invisible model controlling the animation
 284  *      tags:
 285  *        shot = muzzle end (shot origin, also used for muzzle flashes)
 286  *        shell = casings ejection point (must be on the right hand side of the gun)
 287  *        weapon = attachment for v_tuba.md3
 288  *    v_tuba.md3 - first and third person model
 289  *    g_tuba.md3 - pickup model
 290  *
 291  * 2. simple animated model, muzzle flash handling on v_ model:
 292  *    h_tuba.dpm, h_tuba.dpm.framegroups - invisible model controlling the animation
 293  *      tags:
 294  *        weapon = attachment for v_tuba.md3
 295  *    v_tuba.md3 - first and third person model
 296  *      tags:
 297  *        shot = muzzle end (shot origin, also used for muzzle flashes)
 298  *        shell = casings ejection point (must be on the right hand side of the gun)
 299  *    g_tuba.md3 - pickup model
 300  *
 301  * 3. fully animated model, muzzle flash handling on h_ model:
 302  *    h_tuba.dpm, h_tuba.dpm.framegroups - animated first person model
 303  *      tags:
 304  *        shot = muzzle end (shot origin, also used for muzzle flashes)
 305  *        shell = casings ejection point (must be on the right hand side of the gun)
 306  *        handle = corresponding to the origin of v_tuba.md3 (used for muzzle flashes)
 307  *    v_tuba.md3 - third person model
 308  *    g_tuba.md3 - pickup model
 309  *
 310  * 4. fully animated model, muzzle flash handling on v_ model:
 311  *    h_tuba.dpm, h_tuba.dpm.framegroups - animated first person model
 312  *      tags:
 313  *        shot = muzzle end (shot origin)
 314  *        shell = casings ejection point (must be on the right hand side of the gun)
 315  *    v_tuba.md3 - third person model
 316  *      tags:
 317  *        shot = muzzle end (for muzzle flashes)
 318  *    g_tuba.md3 - pickup model
 319  */
 320
 321 // writes:
 322 //   self.origin, self.angles
 323 //   self.weaponentity
 324 //   self.movedir, self.view_ofs
 325 //   attachment stuff
 326 //   anim stuff
 327 // to free:
 328 //   call again with ""
 329 //   remove the ent
 330 void CL_WeaponEntity_SetModel(string name)
 331 {
 332         float v_shot_idx;
 333         if (name != "")
 334         {
 335                 // if there is a child entity, hide it until we're sure we use it
 336                 if (self.weaponentity)
 337                         self.weaponentity.model = "";
 338                 setmodel(self, strcat("models/weapons/v_", name, ".md3")); // precision set below
 339                 v_shot_idx = gettagindex(self, "shot"); // used later
 340                 if(!v_shot_idx)
 341                         v_shot_idx = gettagindex(self, "tag_shot");
 342
 343                 setmodel(self, strcat("models/weapons/h_", name, ".iqm")); // precision set below
 344                 // preset some defaults that work great for renamed zym files (which don't need an animinfo)
 345                 self.anim_fire1  = animfixfps(self, '0 1 0.01');
 346                 self.anim_fire2  = animfixfps(self, '1 1 0.01');
 347                 self.anim_idle   = animfixfps(self, '2 1 0.01');
 348                 self.anim_reload = animfixfps(self, '3 1 0.01');
 349
 350                 // if we have a "weapon" tag, let's attach the v_ model to it ("invisible hand" style model)
 351                 // if we don't, this is a "real" animated model
 352                 if(gettagindex(self, "weapon"))
 353                 {
 354                         if (!self.weaponentity)
 355                                 self.weaponentity = spawn();
 356                         setmodel(self.weaponentity, strcat("models/weapons/v_", name, ".md3")); // precision does not matter
 357                         setattachment(self.weaponentity, self, "weapon");
 358                 }
 359                 else if(gettagindex(self, "tag_weapon"))
 360                 {
 361                         if (!self.weaponentity)
 362                                 self.weaponentity = spawn();
 363                         setmodel(self.weaponentity, strcat("models/weapons/v_", name, ".md3")); // precision does not matter
 364                         setattachment(self.weaponentity, self, "tag_weapon");
 365                 }
 366                 else
 367                 {
 368                         if(self.weaponentity)
 369                                 remove(self.weaponentity);
 370                         self.weaponentity = world;
 371                 }
 372
 373                 setorigin(self,'0 0 0');
 374                 self.angles = '0 0 0';
 375                 self.frame = 0;
 376                 self.viewmodelforclient = world;
 377
 378                 float idx;
 379
 380                 if(v_shot_idx) // v_ model attached to invisible h_ model
 381                 {
 382                         self.movedir = gettaginfo(self.weaponentity, v_shot_idx);
 383                 }
 384                 else
 385                 {
 386                         idx = gettagindex(self, "shot");
 387                         if(!idx)
 388                                 idx = gettagindex(self, "tag_shot");
 389                         if(idx)
 390                                 self.movedir = gettaginfo(self, idx);
 391                         else
 392                         {
 393                                 print("WARNING: weapon model ", self.model, " does not support the 'shot' tag, will display shots TOTALLY wrong\n");
 394                                 self.movedir = '0 0 0';
 395                         }
 396                 }
 397
 398                 if(self.weaponentity) // v_ model attached to invisible h_ model
 399                 {
 400                         idx = gettagindex(self.weaponentity, "shell");
 401                         if(!idx)
 402                                 idx = gettagindex(self.weaponentity, "tag_shell");
 403                         if(idx)
 404                                 self.spawnorigin = gettaginfo(self.weaponentity, idx);
 405                 }
 406                 else
 407                         idx = 0;
 408                 if(!idx)
 409                 {
 410                         idx = gettagindex(self, "shell");
 411                         if(!idx)
 412                                 idx = gettagindex(self, "tag_shell");
 413                         if(idx)
 414                                 self.spawnorigin = gettaginfo(self, idx);
 415                         else
 416                         {
 417                                 print("WARNING: weapon model ", self.model, " does not support the 'shell' tag, will display casings wrong\n");
 418                                 self.spawnorigin = self.movedir;
 419                         }
 420                 }
 421
 422                 if(v_shot_idx)
 423                 {
 424                         self.oldorigin = '0 0 0'; // use regular attachment
 425                 }
 426                 else
 427                 {
 428                         if(self.weaponentity)
 429                         {
 430                                 idx = gettagindex(self, "weapon");
 431                                 if(!idx)
 432                                         idx = gettagindex(self, "tag_weapon");
 433                         }
 434                         else
 435                         {
 436                                 idx = gettagindex(self, "handle");
 437                                 if(!idx)
 438                                         idx = gettagindex(self, "tag_handle");
 439                         }
 440                         if(idx)
 441                         {
 442                                 self.oldorigin = self.movedir - gettaginfo(self, idx);
 443                         }
 444                         else
 445                         {
 446                                 print("WARNING: weapon model ", self.model, " does not support the 'handle' tag and neither does the v_ model support the 'shot' tag, will display muzzle flashes TOTALLY wrong\n");
 447                                 self.oldorigin = '0 0 0'; // there is no way to recover from this
 448                         }
 449                 }
 450
 451                 self.viewmodelforclient = self.owner;
 452         }
 453         else
 454         {
 455                 self.model = "";
 456                 if(self.weaponentity)
 457                         remove(self.weaponentity);
 458                 self.weaponentity = world;
 459                 self.movedir = '0 0 0';
 460                 self.spawnorigin = '0 0 0';
 461                 self.oldorigin = '0 0 0';
 462                 self.anim_fire1  = '0 1 0.01';
 463                 self.anim_fire2  = '0 1 0.01';
 464                 self.anim_idle   = '0 1 0.01';
 465                 self.anim_reload = '0 1 0.01';
 466         }
 467
 468         self.view_ofs = '0 0 0';
 469
 470         if(self.movedir_x >= 0)
 471         {
 472                 vector v0;
 473                 v0 = self.movedir;
 474                 self.movedir = shotorg_adjust(v0, FALSE, FALSE);
 475                 self.view_ofs = shotorg_adjust(v0, FALSE, TRUE) - v0;
 476         }
 477         self.owner.stat_shotorg = compressShotOrigin(self.movedir);
 478         self.movedir = decompressShotOrigin(self.owner.stat_shotorg); // make them match perfectly
 479
 480         self.spawnorigin += self.view_ofs; // offset the casings origin by the same amount
 481
 482         // check if an instant weapon switch occurred
 483         setorigin(self, self.view_ofs);
 484         // reset animstate now
 485         self.wframe = WFRAME_IDLE;
 486         setanim(self, self.anim_idle, TRUE, FALSE, TRUE);
 487 }
 488
 489 vector CL_Weapon_GetShotOrg(float wpn)
 490 {
 491         entity wi, oldself;
 492         vector ret;
 493         wi = get_weaponinfo(wpn);
 494         oldself = self;
 495         self = spawn();
 496         CL_WeaponEntity_SetModel(wi.mdl);
 497         ret = self.movedir;
 498         CL_WeaponEntity_SetModel("");
 499         remove(self);
 500         self = oldself;
 501         return ret;
 502 }
 503
 504 void CL_Weaponentity_Think()
 505 {
 506         float tb;
 507         self.nextthink = time;
 508         if (intermission_running)
 509                 self.frame = self.anim_idle_x;
 510         if (self.owner.weaponentity != self)
 511         {
 512                 if (self.weaponentity)
 513                         remove(self.weaponentity);
 514                 remove(self);
 515                 return;
 516         }
 517         if (self.owner.deadflag != DEAD_NO)
 518         {
 519                 self.model = "";
 520                 if (self.weaponentity)
 521                         self.weaponentity.model = "";
 522                 return;
 523         }
 524         if (self.weaponname != self.owner.weaponname || self.dmg != self.owner.modelindex || self.deadflag != self.owner.deadflag)
 525         {
 526                 self.weaponname = self.owner.weaponname;
 527                 self.dmg = self.owner.modelindex;
 528                 self.deadflag = self.owner.deadflag;
 529
 530                 CL_WeaponEntity_SetModel(self.owner.weaponname);
 531         }
 532
 533         tb = (self.effects & (EF_TELEPORT_BIT | EF_RESTARTANIM_BIT));
 534         self.effects = self.owner.effects & EFMASK_CHEAP;
 535         self.effects &~= EF_LOWPRECISION;
 536         self.effects &~= EF_FULLBRIGHT; // can mask team color, so get rid of it
 537         self.effects &~= EF_TELEPORT_BIT;
 538         self.effects &~= EF_RESTARTANIM_BIT;
 539         self.effects |= tb;
 540
 541         if(self.owner.alpha == default_player_alpha)
 542                 self.alpha = default_weapon_alpha;
 543         else if(self.owner.alpha != 0)
 544                 self.alpha = self.owner.alpha;
 545         else
 546                 self.alpha = 1;
 547
 548         self.glowmod = self.owner.weaponentity_glowmod;
 549         self.colormap = self.owner.colormap;
 550         if (self.weaponentity)
 551         {
 552                 self.weaponentity.effects = self.effects;
 553                 self.weaponentity.alpha = self.alpha;
 554                 self.weaponentity.colormap = self.colormap;
 555                 self.weaponentity.glowmod = self.glowmod;
 556         }
 557
 558         self.angles = '0 0 0';
 559         float f;
 560         f = 0;
 561         if (self.state == WS_RAISE && !intermission_running)
 562         {
 563                 f = (self.owner.weapon_nextthink - time) * g_weaponratefactor / autocvar_g_balance_weaponswitchdelay;
 564                 self.angles_x = -90 * f * f;
 565         }
 566         else if (self.state == WS_DROP && !intermission_running)
 567         {
 568                 f = 1 - (self.owner.weapon_nextthink - time) * g_weaponratefactor / autocvar_g_balance_weaponswitchdelay;
 569                 self.angles_x = -90 * f * f;
 570         }
 571         else if (self.state == WS_CLEAR)
 572         {
 573                 f = 1;
 574                 self.angles_x = -90 * f * f;
 575         }
 576 }
 577
 578 void CL_ExteriorWeaponentity_Think()
 579 {
 580         float tag_found;
 581         vector ang;
 582         self.nextthink = time;
 583         if (self.owner.exteriorweaponentity != self)
 584         {
 585                 remove(self);
 586                 return;
 587         }
 588         if (self.owner.deadflag != DEAD_NO)
 589         {
 590                 self.model = "";
 591                 return;
 592         }
 593         if (self.weaponname != self.owner.weaponname || self.dmg != self.owner.modelindex || self.deadflag != self.owner.deadflag)
 594         {
 595                 self.weaponname = self.owner.weaponname;
 596                 self.dmg = self.owner.modelindex;
 597                 self.deadflag = self.owner.deadflag;
 598                 if (self.owner.weaponname != "")
 599                         setmodel(self, strcat("models/weapons/v_", self.owner.weaponname, ".md3")); // precision set below
 600                 else
 601                         self.model = "";
 602
 603                 if((tag_found = gettagindex(self.owner, "tag_weapon")))
 604                 {
 605                         self.tag_index = tag_found;
 606                         self.tag_entity = self.owner;
 607                 }
 608                 else
 609                         setattachment(self, self.owner, "bip01 r hand");
 610         }
 611         self.effects = self.owner.effects;
 612         if(sv_pitch_min == sv_pitch_max)
 613                 self.effects |= EF_LOWPRECISION;
 614         else
 615                 self.effects &~= EF_LOWPRECISION;
 616         self.effects = self.effects & EFMASK_CHEAP; // eat performance
 617         if(self.owner.alpha == default_player_alpha)
 618                 self.alpha = default_weapon_alpha;
 619         else if(self.owner.alpha != 0)
 620                 self.alpha = self.owner.alpha;
 621         else
 622                 self.alpha = 1;
 623
 624         if (!intermission_running)
 625         {
 626                 ang_x = bound(sv_pitch_min, self.owner.v_angle_x, sv_pitch_max);
 627                 ang_y = 0;
 628                 ang_z = 0;
 629
 630                 if(sv_pitch_fixyaw) // workaround for stupid player models that don't aim forward
 631                 {
 632                         ang_y = self.owner.v_angle_y;
 633                         makevectors(ang);
 634                         var vector v = v_forward;
 635                         var float t = self.tag_entity.frame1time;
 636                         var float f = self.tag_entity.frame;
 637                         self.tag_entity.frame1time = time;
 638                         self.tag_entity.frame = self.tag_entity.anim_idle_x;
 639                         gettaginfo(self.tag_entity, self.tag_index);
 640                         self.tag_entity.frame1time = t;
 641                         self.tag_entity.frame = f;
 642                         // untransform v according to this coordinate space
 643                         vector w;
 644                         w_x = v_forward * v;
 645                         w_y = -v_right * v;
 646                         w_z = v_up * v;
 647                         self.angles = vectoangles(w);
 648                 }
 649                 else
 650                 {
 651                         ang_x = -/* don't ask */ang_x;
 652                         self.angles = ang;
 653                 }
 654
 655                 if(autocvar_g_loituma)
 656                 {
 657                         vector modangles;
 658                         float t;
 659
 660                         t = time * autocvar_g_loituma;
 661
 662                         modangles_x = t * 360;
 663                         modangles_y = 90;
 664                         modangles_z = 0;
 665
 666                         self.angles =
 667                                 AnglesTransform_ToAngles(
 668                                         AnglesTransform_Multiply(
 669                                                 AnglesTransform_FromAngles(self.angles),
 670                                                 AnglesTransform_FromAngles(modangles)
 671                                         )
 672                                 );
 673                 }
 674         }
 675
 676         self.glowmod = self.owner.weaponentity_glowmod;
 677         self.colormap = self.owner.colormap;
 678
 679         CSQCMODEL_AUTOUPDATE();
 680 }
 681
 682 // spawning weaponentity for client
 683 void CL_SpawnWeaponentity()
 684 {
 685         self.weaponentity = spawn();
 686         self.weaponentity.classname = "weaponentity";
 687         self.weaponentity.solid = SOLID_NOT;
 688         self.weaponentity.owner = self;
 689         setmodel(self.weaponentity, ""); // precision set when changed
 690         setorigin(self.weaponentity, '0 0 0');
 691         self.weaponentity.angles = '0 0 0';
 692         self.weaponentity.viewmodelforclient = self;
 693         self.weaponentity.flags = 0;
 694         self.weaponentity.think = CL_Weaponentity_Think;
 695         self.weaponentity.customizeentityforclient = CL_Weaponentity_CustomizeEntityForClient;
 696         self.weaponentity.nextthink = time;
 697
 698         self.exteriorweaponentity = spawn();
 699         self.exteriorweaponentity.classname = "exteriorweaponentity";
 700         self.exteriorweaponentity.solid = SOLID_NOT;
 701         self.exteriorweaponentity.exteriorweaponentity = self.exteriorweaponentity;
 702         self.exteriorweaponentity.owner = self;
 703         setorigin(self.exteriorweaponentity, '0 0 0');
 704         self.exteriorweaponentity.angles = '0 0 0';
 705         self.exteriorweaponentity.think = CL_ExteriorWeaponentity_Think;
 706         self.exteriorweaponentity.nextthink = time;
 707
 708         {
 709                 entity oldself = self;
 710                 self = self.exteriorweaponentity;
 711                 CSQCMODEL_AUTOINIT();
 712                 self = oldself;
 713         }
 714 }
 715
 716 void Send_WeaponComplain (entity e, float wpn, string wpnname, float type)
 717 {
 718         msg_entity = e;
 719         WriteByte(MSG_ONE, SVC_TEMPENTITY);
 720         WriteByte(MSG_ONE, TE_CSQC_WEAPONCOMPLAIN);
 721         WriteByte(MSG_ONE, wpn);
 722         WriteString(MSG_ONE, wpnname);
 723         WriteByte(MSG_ONE, type);
 724 }
 725
 726 .float hasweapon_complain_spam;
 727
 728 float client_hasweapon(entity cl, float wpn, float andammo, float complain)
 729 {
 730         float weaponbit, f;
 731         entity oldself;
 732
 733         if(time < self.hasweapon_complain_spam)
 734                 complain = 0;
 735         if(complain)
 736                 self.hasweapon_complain_spam = time + 0.2;
 737
 738         if (wpn < WEP_FIRST || wpn > WEP_LAST)
 739         {
 740                 if (complain)
 741                         sprint(self, "Invalid weapon\n");
 742                 return FALSE;
 743         }
 744         weaponbit = W_WeaponBit(wpn);
 745         if (cl.weapons & weaponbit)
 746         {
 747                 if (andammo)
 748                 {
 749                         if(cl.items & IT_UNLIMITED_WEAPON_AMMO)
 750                         {
 751                                 f = 1;
 752                         }
 753                         else
 754                         {
 755                                 oldself = self;
 756                                 self = cl;
 757                                 f = weapon_action(wpn, WR_CHECKAMMO1);
 758                                 f = f + weapon_action(wpn, WR_CHECKAMMO2);
 759
 760                                 // always allow selecting the Mine Layer if we placed mines, so that we can detonate them
 761                                 entity mine;
 762                                 if(wpn == WEP_MINE_LAYER)
 763                                 for(mine = world; (mine = find(mine, classname, "mine")); ) if(mine.owner == self)
 764                                         f = 1;
 765
 766                                 self = oldself;
 767                         }
 768                         if (!f)
 769                         {
 770                                 if (complain)
 771                                 if(clienttype(cl) == CLIENTTYPE_REAL)
 772                                 {
 773                                         play2(cl, "weapons/unavailable.wav");
 774                                         sprint(cl, strcat("You don't have any ammo for the ^2", W_Name(wpn), "\n"));
 775                                         Send_WeaponComplain (cl, wpn, W_Name(wpn), 0);
 776                                 }
 777                                 return FALSE;
 778                         }
 779                 }
 780                 return TRUE;
 781         }
 782         if (complain)
 783         {
 784                 // DRESK - 3/16/07
 785                 // Report Proper Weapon Status / Modified Weapon Ownership Message
 786                 if(weaponsInMap & weaponbit)
 787                 {
 788                         sprint(cl, strcat("You do not have the ^2", W_Name(wpn), "\n") );
 789                         Send_WeaponComplain (cl, wpn, W_Name(wpn), 1);
 790
 791                         if(autocvar_g_showweaponspawns)
 792                         {
 793                                 entity e;
 794                                 string s;
 795
 796                                 e = get_weaponinfo(wpn);
 797                                 s = e.model2;
 798
 799                                 for(e = world; (e = findfloat(e, weapons, weaponbit)); )
 800                                 {
 801                                         if(e.classname == "droppedweapon")
 802                                                 continue;
 803                                         if not(e.flags & FL_ITEM)
 804                                                 continue;
 805                                         WaypointSprite_Spawn(
 806                                                 s,
 807                                                 1, 0,
 808                                                 world, e.origin,
 809                                                 self, 0,
 810                                                 world, enemy,
 811                                                 0,
 812                                                 RADARICON_NONE, '0 0 0'
 813                                         );
 814                                 }
 815                         }
 816                 }
 817                 else
 818                 {
 819                         Send_WeaponComplain (cl, wpn, W_Name(wpn), 2);
 820                         sprint(cl, strcat("The ^2", W_Name(wpn), "^7 is ^1NOT AVAILABLE^7 in this map\n") );
 821                 }
 822
 823                 play2(cl, "weapons/unavailable.wav");
 824         }
 825         return FALSE;
 826 }
 827
 828 // Weapon subs
 829 void w_clear()
 830 {
 831         if (self.weapon != -1)
 832         {
 833                 self.weapon = 0;
 834                 self.switchingweapon = 0;
 835         }
 836         if (self.weaponentity)
 837         {
 838                 self.weaponentity.state = WS_CLEAR;
 839                 self.weaponentity.effects = 0;
 840         }
 841 }
 842
 843 void w_ready()
 844 {
 845         if (self.weaponentity)
 846                 self.weaponentity.state = WS_READY;
 847         weapon_thinkf(WFRAME_IDLE, 1000000, w_ready);
 848 }
 849
 850 // Setup weapon for client (after this raise frame will be launched)
 851 void weapon_setup(float windex)
 852 {
 853         entity e;
 854         e = get_weaponinfo(windex);
 855         self.items &~= IT_AMMO;
 856         self.items = self.items | (e.items & IT_AMMO);
 857
 858         // the two weapon entities will notice this has changed and update their models
 859         self.weapon = windex;
 860         self.switchingweapon = windex; // to make sure
 861         self.weaponname = e.mdl;
 862         self.bulletcounter = 0;
 863 }
 864
 865 // perform weapon to attack (weaponstate and attack_finished check is here)
 866 void W_SwitchToOtherWeapon(entity pl)
 867 {
 868         // hack to ensure it switches to an OTHER weapon (in case the other fire mode still has ammo, we want that anyway)
 869         float w, ww;
 870         w = W_WeaponBit(pl.weapon);
 871         pl.weapons &~= w;
 872         ww = w_getbestweapon(pl);
 873         pl.weapons |= w;
 874         if(ww)
 875                 W_SwitchWeapon_Force(pl, ww);
 876 }
 877
 878 string PrimaryOrSecondary(float secondary)
 879 {
 880         if(secondary)
 881                 return "secondary";
 882         else
 883                 return "primary";
 884 }
 885
 886 .float prevdryfire;
 887 .float prevwarntime;
 888 float weapon_prepareattack_checkammo(float secondary)
 889 {
 890         if not(self.items & IT_UNLIMITED_WEAPON_AMMO)
 891         if (!weapon_action(self.weapon, WR_CHECKAMMO1 + secondary))
 892         {
 893                 // always keep the Mine Layer if we placed mines, so that we can detonate them
 894                 entity mine;
 895                 if(self.weapon == WEP_MINE_LAYER)
 896                 for(mine = world; (mine = find(mine, classname, "mine")); ) if(mine.owner == self)
 897                         return FALSE;
 898
 899                 if(self.weapon == self.switchweapon && time - self.prevdryfire > 1) // only play once BEFORE starting to switch weapons
 900                 {
 901                         sound (self, CH_WEAPON_A, "weapons/dryfire.wav", VOL_BASE, ATTN_NORM);
 902                         self.prevdryfire = time;
 903                 }
 904
 905                 if(weapon_action(self.weapon, WR_CHECKAMMO2 - secondary)) // check if the other firing mode has enough ammo
 906                 {
 907                         if(time - self.prevwarntime > 1)
 908                         {
 909                                 sprint(self, strcat("^2", W_Name(self.weapon), " ", PrimaryOrSecondary(secondary), "^7 is unable to fire, but its ^2", PrimaryOrSecondary(1 - secondary), "^7 can.\n"));
 910                         }
 911                         self.prevwarntime = time;
 912                 }
 913                 else // this weapon is totally unable to fire, switch to another one
 914                 {
 915                         W_SwitchToOtherWeapon(self);
 916                 }
 917
 918                 return FALSE;
 919         }
 920         return TRUE;
 921 }
 922 .float race_penalty;
 923 float weapon_prepareattack_check(float secondary, float attacktime)
 924 {
 925         if(!weapon_prepareattack_checkammo(secondary))
 926                 return FALSE;
 927
 928         //if sv_ready_restart_after_countdown is set, don't allow the player to shoot
 929         //if all players readied up and the countdown is running
 930         if(time < game_starttime || time < self.race_penalty) {
 931                 return FALSE;
 932         }
 933
 934         if (timeout_status == TIMEOUT_ACTIVE) //don't allow the player to shoot while game is paused
 935                 return FALSE;
 936
 937         // do not even think about shooting if switching
 938         if(self.switchweapon != self.weapon)
 939                 return FALSE;
 940
 941         if(attacktime >= 0)
 942         {
 943                 // don't fire if previous attack is not finished
 944                 if (ATTACK_FINISHED(self) > time + self.weapon_frametime * 0.5)
 945                         return FALSE;
 946                 // don't fire while changing weapon
 947                 if (self.weaponentity.state != WS_READY)
 948                         return FALSE;
 949         }
 950
 951         return TRUE;
 952 }
 953 float weapon_prepareattack_do(float secondary, float attacktime)
 954 {
 955         self.weaponentity.state = WS_INUSE;
 956
 957         self.spawnshieldtime = min(self.spawnshieldtime, time); // kill spawn shield when you fire
 958
 959         // if the weapon hasn't been firing continuously, reset the timer
 960         if(attacktime >= 0)
 961         {
 962                 if (ATTACK_FINISHED(self) < time - self.weapon_frametime * 1.5)
 963                 {
 964                         ATTACK_FINISHED(self) = time;
 965                         //dprint("resetting attack finished to ", ftos(time), "\n");
 966                 }
 967                 ATTACK_FINISHED(self) = ATTACK_FINISHED(self) + attacktime * W_WeaponRateFactor();
 968         }
 969         self.bulletcounter += 1;
 970         //dprint("attack finished ", ftos(ATTACK_FINISHED(self)), "\n");
 971         return TRUE;
 972 }
 973 float weapon_prepareattack(float secondary, float attacktime)
 974 {
 975         if(weapon_prepareattack_check(secondary, attacktime))
 976         {
 977                 weapon_prepareattack_do(secondary, attacktime);
 978                 return TRUE;
 979         }
 980         else
 981                 return FALSE;
 982 }
 983
 984 void weapon_thinkf(float fr, float t, void() func)
 985 {
 986         vector a;
 987         vector of, or, ou;
 988         float restartanim;
 989
 990         if(fr == WFRAME_DONTCHANGE)
 991         {
 992                 fr = self.weaponentity.wframe;
 993                 restartanim = FALSE;
 994         }
 995         else if (fr == WFRAME_IDLE)
 996                 restartanim = FALSE;
 997         else
 998                 restartanim = TRUE;
 999
1000         of = v_forward;
1001         or = v_right;
1002         ou = v_up;
1003
1004         if (self.weaponentity)
1005         {
1006                 self.weaponentity.wframe = fr;
1007                 if (fr == WFRAME_IDLE)
1008                         a = self.weaponentity.anim_idle;
1009                 else if (fr == WFRAME_FIRE1)
1010                         a = self.weaponentity.anim_fire1;
1011                 else if (fr == WFRAME_FIRE2)
1012                         a = self.weaponentity.anim_fire2;
1013                 else if (fr == WFRAME_RELOAD)
1014                         a = self.weaponentity.anim_reload;
1015                 a_z *= g_weaponratefactor;
1016                 setanim(self.weaponentity, a, restartanim == FALSE, restartanim, restartanim);
1017         }
1018
1019         v_forward = of;
1020         v_right = or;
1021         v_up = ou;
1022
1023         if(self.weapon_think == w_ready && func != w_ready && self.weaponentity.state == WS_RAISE)
1024         {
1025                 backtrace("Tried to override initial weapon think function - should this really happen?");
1026         }
1027
1028         t *= W_WeaponRateFactor();
1029
1030         // VorteX: haste can be added here
1031         if (self.weapon_think == w_ready)
1032         {
1033                 self.weapon_nextthink = time;
1034                 //dprint("started firing at ", ftos(time), "\n");
1035         }
1036         if (self.weapon_nextthink < time - self.weapon_frametime * 1.5 || self.weapon_nextthink > time + self.weapon_frametime * 1.5)
1037         {
1038                 self.weapon_nextthink = time;
1039                 //dprint("reset weapon animation timer at ", ftos(time), "\n");
1040         }
1041         self.weapon_nextthink = self.weapon_nextthink + t;
1042         self.weapon_think = func;
1043         //dprint("next ", ftos(self.weapon_nextthink), "\n");
1044
1045         // The shoot animation looks TERRIBLE without animation blending! Yay for moonwalking while shooting!
1046         //anim = self.anim_shoot;
1047         if (restartanim)
1048         if (t)
1049         if (!self.crouch) // shoot anim stands up, this looks bad
1050         {
1051                 vector anim;
1052                 if(self.weapon == WEP_SHOTGUN && self.BUTTON_ATCK2)
1053                 {
1054                         anim = self.anim_melee;
1055                         anim_z = anim_y / (t + sys_frametime);
1056                         setanim(self, anim, FALSE, TRUE, TRUE);
1057                 }
1058                 else if (self.animstate_startframe == self.anim_idle_x) // only allow shoot anim to override idle animation until we have animation blending
1059                 {
1060                         anim = self.anim_shoot;
1061                         anim_z = anim_y / (t + sys_frametime);
1062                         setanim(self, anim, FALSE, TRUE, TRUE);
1063                 }
1064         }
1065 }
1066
1067 void weapon_boblayer1(float spd, vector org)
1068 {
1069         // VorteX: haste can be added here
1070 }
1071
1072 vector W_CalculateProjectileVelocity(vector pvelocity, vector mvelocity, float forceAbsolute)
1073 {
1074         vector mdirection;
1075         float mspeed;
1076         float outspeed;
1077         float nstyle;
1078         vector outvelocity;
1079
1080         mvelocity = mvelocity * g_weaponspeedfactor;
1081
1082         mdirection = normalize(mvelocity);
1083         mspeed = vlen(mvelocity);
1084
1085         nstyle = autocvar_g_projectiles_newton_style;
1086         if(nstyle == 0 || forceAbsolute)
1087         {
1088                 // absolute velocity
1089                 outvelocity = mvelocity;
1090         }
1091         else if(nstyle == 1)
1092         {
1093                 // true Newtonian projectiles
1094                 outvelocity = pvelocity + mvelocity;
1095         }
1096         else if(nstyle == 2)
1097         {
1098                 // true Newtonian projectiles with automatic aim adjustment
1099                 //
1100                 // solve: |outspeed * mdirection - pvelocity| = mspeed
1101                 // outspeed^2 - 2 * outspeed * (mdirection * pvelocity) + pvelocity^2 - mspeed^2 = 0
1102                 // outspeed = (mdirection * pvelocity) +- sqrt((mdirection * pvelocity)^2 - pvelocity^2 + mspeed^2)
1103                 // PLUS SIGN!
1104                 // not defined?
1105                 // then...
1106                 // pvelocity^2 - (mdirection * pvelocity)^2 > mspeed^2
1107                 // velocity without mdirection component > mspeed
1108                 // fire at smallest possible mspeed that works?
1109                 // |(mdirection * pvelocity) * pvelocity - pvelocity| = mspeed
1110
1111                 vector solution;
1112                 solution = solve_quadratic(1, -2 * (mdirection * pvelocity), pvelocity * pvelocity - mspeed * mspeed);
1113                 if(solution_z)
1114                         outspeed = solution_y; // the larger one
1115                 else
1116                 {
1117                         //outspeed = 0; // slowest possible shot
1118                         outspeed = solution_x; // the real part (that is, the average!)
1119                         //dprint("impossible shot, adjusting\n");
1120                 }
1121
1122                 outspeed = bound(mspeed * autocvar_g_projectiles_newton_style_2_minfactor, outspeed, mspeed * autocvar_g_projectiles_newton_style_2_maxfactor);
1123                 outvelocity = mdirection * outspeed;
1124         }
1125         else if(nstyle == 3)
1126         {
1127                 // pseudo-Newtonian:
1128                 outspeed = mspeed + mdirection * pvelocity;
1129                 outspeed = bound(mspeed * 0.7, outspeed, mspeed * 5.0);
1130                 outvelocity = mdirection * outspeed;
1131         }
1132         else if(nstyle == 4)
1133         {
1134                 // tZorkian:
1135                 outspeed = mspeed + vlen(pvelocity);
1136                 outvelocity = mdirection * outspeed;
1137         }
1138         else
1139                 error("g_projectiles_newton_style must be 0 (absolute), 1 (Newtonian), 2 (Newtonian + aimfix), 3 (pseudo Newtonian) or 4 (tZorkian)!");
1140
1141         return outvelocity;
1142 }
1143
1144 void W_AttachToShotorg(entity flash, vector offset)
1145 {
1146         entity xflash;
1147         flash.owner = self;
1148         flash.angles_z = random() * 360;
1149
1150         if(gettagindex(self.weaponentity, "shot"))
1151                 setattachment(flash, self.weaponentity, "shot");
1152         else
1153                 setattachment(flash, self.weaponentity, "tag_shot");
1154         setorigin(flash, offset);
1155
1156         xflash = spawn();
1157         copyentity(flash, xflash);
1158
1159         flash.viewmodelforclient = self;
1160
1161         if(self.weaponentity.oldorigin_x > 0)
1162         {
1163                 setattachment(xflash, self.exteriorweaponentity, "");
1164                 setorigin(xflash, self.weaponentity.oldorigin + offset);
1165         }
1166         else
1167         {
1168                 if(gettagindex(self.exteriorweaponentity, "shot"))
1169                         setattachment(xflash, self.exteriorweaponentity, "shot");
1170                 else
1171                         setattachment(xflash, self.exteriorweaponentity, "tag_shot");
1172                 setorigin(xflash, offset);
1173         }
1174 }
1175
1176 vector cliptoplane(vector v, vector p)
1177 {
1178         return v - (v * p) * p;
1179 }
1180
1181 vector solve_cubic_pq(float p, float q)
1182 {
1183         float D, u, v, a;
1184         D = q*q/4.0 + p*p*p/27.0;
1185         if(D < 0)
1186         {
1187                 // irreducibilis
1188                 a = 1.0/3.0 * acos(-q/2.0 * sqrt(-27.0/(p*p*p)));
1189                 u = sqrt(-4.0/3.0 * p);
1190                 // a in range 0..pi/3
1191                 // cos(a)
1192                 // cos(a + 2pi/3)
1193                 // cos(a + 4pi/3)
1194                 return
1195                         u *
1196                         (
1197                                 '1 0 0' * cos(a + 2.0/3.0*M_PI)
1198                                 +
1199                                 '0 1 0' * cos(a + 4.0/3.0*M_PI)
1200                                 +
1201                                 '0 0 1' * cos(a)
1202                         );
1203         }
1204         else if(D == 0)
1205         {
1206                 // simple
1207                 if(p == 0)
1208                         return '0 0 0';
1209                 u = 3*q/p;
1210                 v = -u/2;
1211                 if(u >= v)
1212                         return '1 1 0' * v + '0 0 1' * u;
1213                 else
1214                         return '0 1 1' * v + '1 0 0' * u;
1215         }
1216         else
1217         {
1218                 // cardano
1219                 u = cbrt(-q/2.0 + sqrt(D));
1220                 v = cbrt(-q/2.0 - sqrt(D));
1221                 return '1 1 1' * (u + v);
1222         }
1223 }
1224 vector solve_cubic_abcd(float a, float b, float c, float d)
1225 {
1226         // y = 3*a*x + b
1227         // x = (y - b) / 3a
1228         float p, q;
1229         vector v;
1230         p = (9*a*c - 3*b*b);
1231         q = (27*a*a*d - 9*a*b*c + 2*b*b*b);
1232         v = solve_cubic_pq(p, q);
1233         v = (v -  b * '1 1 1') * (1.0 / (3.0 * a));
1234         if(a < 0)
1235                 v += '1 0 -1' * (v_z - v_x); // swap x, z
1236         return v;
1237 }
1238
1239 vector findperpendicular(vector v)
1240 {
1241         vector p;
1242         p_x = v_z;
1243         p_y = -v_x;
1244         p_z = v_y;
1245         return normalize(cliptoplane(p, v));
1246 }
1247
1248 vector W_CalculateProjectileSpread(vector forward, float spread)
1249 {
1250         float sigma;
1251         vector v1, v2;
1252         float dx, dy, r;
1253         float sstyle;
1254         spread *= g_weaponspreadfactor;
1255         if(spread <= 0)
1256                 return forward;
1257         sstyle = autocvar_g_projectiles_spread_style;
1258
1259         if(sstyle == 0)
1260         {
1261                 // this is the baseline for the spread value!
1262                 // standard deviation: sqrt(2/5)
1263                 // density function: sqrt(1-r^2)
1264                 return forward + randomvec() * spread;
1265         }
1266         else if(sstyle == 1)
1267         {
1268                 // same thing, basically
1269                 return normalize(forward + cliptoplane(randomvec() * spread, forward));
1270         }
1271         else if(sstyle == 2)
1272         {
1273                 // circle spread... has at sigma=1 a standard deviation of sqrt(1/2)
1274                 sigma = spread * 0.89442719099991587855; // match baseline stddev
1275                 v1 = findperpendicular(forward);
1276                 v2 = cross(forward, v1);
1277                 // random point on unit circle
1278                 dx = random() * 2 * M_PI;
1279                 dy = sin(dx);
1280                 dx = cos(dx);
1281                 // radius in our dist function
1282                 r = random();
1283                 r = sqrt(r);
1284                 return normalize(forward + (v1 * dx + v2 * dy) * r * sigma);
1285         }
1286         else if(sstyle == 3) // gauss 3d
1287         {
1288                 sigma = spread * 0.44721359549996; // match baseline stddev
1289                 // note: 2D gaussian has sqrt(2) times the stddev of 1D, so this factor is right
1290                 v1 = forward;
1291                 v1_x += gsl_ran_gaussian(sigma);
1292                 v1_y += gsl_ran_gaussian(sigma);
1293                 v1_z += gsl_ran_gaussian(sigma);
1294                 return v1;
1295         }
1296         else if(sstyle == 4) // gauss 2d
1297         {
1298                 sigma = spread * 0.44721359549996; // match baseline stddev
1299                 // note: 2D gaussian has sqrt(2) times the stddev of 1D, so this factor is right
1300                 v1_x = gsl_ran_gaussian(sigma);
1301                 v1_y = gsl_ran_gaussian(sigma);
1302                 v1_z = gsl_ran_gaussian(sigma);
1303                 return normalize(forward + cliptoplane(v1, forward));
1304         }
1305         else if(sstyle == 5) // 1-r
1306         {
1307                 sigma = spread * 1.154700538379252; // match baseline stddev
1308                 v1 = findperpendicular(forward);
1309                 v2 = cross(forward, v1);
1310                 // random point on unit circle
1311                 dx = random() * 2 * M_PI;
1312                 dy = sin(dx);
1313                 dx = cos(dx);
1314                 // radius in our dist function
1315                 r = random();
1316                 r = solve_cubic_abcd(-2, 3, 0, -r) * '0 1 0';
1317                 return normalize(forward + (v1 * dx + v2 * dy) * r * sigma);
1318         }
1319         else if(sstyle == 6) // 1-r^2
1320         {
1321                 sigma = spread * 1.095445115010332; // match baseline stddev
1322                 v1 = findperpendicular(forward);
1323                 v2 = cross(forward, v1);
1324                 // random point on unit circle
1325                 dx = random() * 2 * M_PI;
1326                 dy = sin(dx);
1327                 dx = cos(dx);
1328                 // radius in our dist function
1329                 r = random();
1330                 r = sqrt(1 - r);
1331                 r = sqrt(1 - r);
1332                 return normalize(forward + (v1 * dx + v2 * dy) * r * sigma);
1333         }
1334         else if(sstyle == 7) // (1-r) (2-r)
1335         {
1336                 sigma = spread * 1.224744871391589; // match baseline stddev
1337                 v1 = findperpendicular(forward);
1338                 v2 = cross(forward, v1);
1339                 // random point on unit circle
1340                 dx = random() * 2 * M_PI;
1341                 dy = sin(dx);
1342                 dx = cos(dx);
1343                 // radius in our dist function
1344                 r = random();
1345                 r = 1 - sqrt(r);
1346                 r = 1 - sqrt(r);
1347                 return normalize(forward + (v1 * dx + v2 * dy) * r * sigma);
1348         }
1349         else
1350                 error("g_projectiles_spread_style must be 0 (sphere), 1 (flattened sphere), 2 (circle), 3 (gauss 3D), 4 (gauss plane), 5 (linear falloff), 6 (quadratic falloff), 7 (stronger falloff)!");
1351         return '0 0 0';
1352         /*
1353          * how to derive falloff functions:
1354          * rho(r) := (2-r) * (1-r);
1355          * a : 0;
1356          * b : 1;
1357          * rhor(r) := r * rho(r);
1358          * cr(t) := integrate(rhor(r), r, a, t);
1359          * scr(t) := integrate(rhor(r) * r^2, r, a, t);
1360          * variance : scr(b) / cr(b);
1361          * solve(cr(r) = rand * cr(b), r), programmmode:false;
1362          * sqrt(0.4 / variance), numer;
1363          */
1364 }
1365
1366 #if 0
1367 float mspercallsum;
1368 float mspercallsstyle;
1369 float mspercallcount;
1370 #endif
1371 void W_SetupProjectileVelocityEx(entity missile, vector dir, vector upDir, float pSpeed, float pUpSpeed, float pZSpeed, float spread, float forceAbsolute)
1372 {
1373         if(missile.owner == world)
1374                 error("Unowned missile");
1375
1376         dir = dir + upDir * (pUpSpeed / pSpeed);
1377         dir_z += pZSpeed / pSpeed;
1378         pSpeed *= vlen(dir);
1379         dir = normalize(dir);
1380
1381 #if 0
1382         if(autocvar_g_projectiles_spread_style != mspercallsstyle)
1383         {
1384                 mspercallsum = mspercallcount = 0;
1385                 mspercallsstyle = autocvar_g_projectiles_spread_style;
1386         }
1387         mspercallsum -= gettime(GETTIME_HIRES);
1388 #endif
1389         dir = W_CalculateProjectileSpread(dir, spread);
1390 #if 0
1391         mspercallsum += gettime(GETTIME_HIRES);
1392         mspercallcount += 1;
1393         print("avg: ", ftos(mspercallcount / mspercallsum), " per sec\n");
1394 #endif
1395
1396         missile.velocity = W_CalculateProjectileVelocity(missile.owner.velocity, pSpeed * dir, forceAbsolute);
1397 }
1398
1399 void W_SetupProjectileVelocity(entity missile, float pSpeed, float spread)
1400 {
1401         W_SetupProjectileVelocityEx(missile, w_shotdir, v_up, pSpeed, 0, 0, spread, FALSE);
1402 }
1403
1404 #define W_SETUPPROJECTILEVELOCITY_UP(m,s) W_SetupProjectileVelocityEx(m, w_shotdir, v_up, cvar(#s "_speed"), cvar(#s "_speed_up"), cvar(#s "_speed_z"), cvar(#s "_spread"), FALSE)
1405 #define W_SETUPPROJECTILEVELOCITY(m,s) W_SetupProjectileVelocityEx(m, w_shotdir, v_up, cvar(#s "_speed"), 0, 0, cvar(#s "_spread"), FALSE)
1406
1407 void W_DecreaseAmmo(.float ammo_type, float ammo_use, float ammo_reload)
1408 {
1409         if((self.items & IT_UNLIMITED_WEAPON_AMMO) && !ammo_reload)
1410                 return;
1411
1412         // if this weapon is reloadable, decrease its load. Else decrease the player's ammo
1413         if(ammo_reload)
1414         {
1415                 self.clip_load -= ammo_use;
1416                 self.(weapon_load[self.weapon]) = self.clip_load;
1417         }
1418         else
1419                 self.(self.current_ammo) -= ammo_use;
1420 }
1421
1422 // weapon reloading code
1423
1424 .float reload_ammo_amount, reload_ammo_min, reload_time;
1425 .float reload_complain;
1426 .string reload_sound;
1427
1428 void W_ReloadedAndReady()
1429 {
1430         // finish the reloading process, and do the ammo transfer
1431
1432         self.clip_load = self.old_clip_load; // restore the ammo counter, in case we still had ammo in the weapon before reloading
1433
1434         // if the gun uses no ammo, max out weapon load, else decrease ammo as we increase weapon load
1435         if(!self.reload_ammo_min || self.items & IT_UNLIMITED_WEAPON_AMMO)
1436                 self.clip_load = self.reload_ammo_amount;
1437         else
1438         {
1439                 while(self.clip_load < self.reload_ammo_amount && self.(self.current_ammo)) // make sure we don't add more ammo than we have
1440                 {
1441                         self.clip_load += 1;
1442                         self.(self.current_ammo) -= 1;
1443                 }
1444         }
1445         self.(weapon_load[self.weapon]) = self.clip_load;
1446
1447         // do not set ATTACK_FINISHED in reload code any more. This causes annoying delays if eg: You start reloading a weapon,
1448         // then quickly switch to another weapon and back. Reloading is canceled, but the reload delay is still there,
1449         // so your weapon is disabled for a few seconds without reason
1450
1451         //ATTACK_FINISHED(self) -= self.reload_time - 1;
1452
1453         w_ready();
1454 }
1455
1456 void W_Reload(float sent_ammo_min, float sent_ammo_amount, float sent_time, string sent_sound)
1457 {
1458         // set global values to work with
1459
1460         self.reload_ammo_min = sent_ammo_min;
1461         self.reload_ammo_amount = sent_ammo_amount;
1462         self.reload_time = sent_time;
1463         self.reload_sound = sent_sound;
1464
1465         // check if we meet the necessary conditions to reload
1466
1467         entity e;
1468         e = get_weaponinfo(self.weapon);
1469
1470         // don't reload weapons that don't have the RELOADABLE flag
1471         if not(e.spawnflags & WEP_FLAG_RELOADABLE)
1472         {
1473                 dprint("Warning: Attempted to reload a weapon that does not have the WEP_FLAG_RELOADABLE flag. Fix your code!\n");
1474                 return;
1475         }
1476
1477         // return if reloading is disabled for this weapon
1478         if(!self.reload_ammo_amount)
1479                 return;
1480
1481         // our weapon is fully loaded, no need to reload
1482         if (self.clip_load >= self.reload_ammo_amount)
1483                 return;
1484
1485         // no ammo, so nothing to load
1486         if(!self.(self.current_ammo) && self.reload_ammo_min)
1487         if not(self.items & IT_UNLIMITED_WEAPON_AMMO)
1488         {
1489                 if(clienttype(self) == CLIENTTYPE_REAL && self.reload_complain < time)
1490                 {
1491                         play2(self, "weapons/unavailable.wav");
1492                         sprint(self, strcat("You don't have enough ammo to reload the ^2", W_Name(self.weapon), "\n"));
1493                         self.reload_complain = time + 1;
1494                 }
1495                 // switch away if the amount of ammo is not enough to keep using this weapon
1496                 if not(weapon_action(self.weapon, WR_CHECKAMMO1) + weapon_action(self.weapon, WR_CHECKAMMO2))
1497                 {
1498                         self.clip_load = -1; // reload later
1499                         W_SwitchToOtherWeapon(self);
1500                 }
1501                 return;
1502         }
1503
1504         if (self.weaponentity)
1505         {
1506                 if (self.weaponentity.wframe == WFRAME_RELOAD)
1507                         return;
1508
1509                 // allow switching away while reloading, but this will cause a new reload!
1510                 self.weaponentity.state = WS_READY;
1511         }
1512
1513         // now begin the reloading process
1514
1515         sound (self, CH_WEAPON_SINGLE, self.reload_sound, VOL_BASE, ATTN_NORM);
1516
1517         // do not set ATTACK_FINISHED in reload code any more. This causes annoying delays if eg: You start reloading a weapon,
1518         // then quickly switch to another weapon and back. Reloading is canceled, but the reload delay is still there,
1519         // so your weapon is disabled for a few seconds without reason
1520
1521         //ATTACK_FINISHED(self) = max(time, ATTACK_FINISHED(self)) + self.reload_time + 1;
1522
1523         weapon_thinkf(WFRAME_RELOAD, self.reload_time, W_ReloadedAndReady);
1524
1525         if(self.clip_load < 0)
1526                 self.clip_load = 0;
1527         self.old_clip_load = self.clip_load;
1528         self.clip_load = self.(weapon_load[self.weapon]) = -1;
1529 }