data/qcsrc/server/cl_weaponsystem.qc

   1 /*
   2 ===========================================================================
   3
   4   CLIENT WEAPONSYSTEM CODE
   5   Bring back W_Weaponframe
   6
   7 ===========================================================================
   8 */
   9
  10 void W_SwitchWeapon_Force(entity e, float w)
  11 {
  12         e.cnt = e.switchweapon;
  13         e.switchweapon = w;
  14 }
  15
  16 .float antilag_debug;
  17
  18 // VorteX: static frame globals
  19 float WFRAME_DONTCHANGE = -1;
  20 float WFRAME_FIRE1 = 0;
  21 float WFRAME_FIRE2 = 1;
  22 float WFRAME_IDLE = 2;
  23 float WFRAME_RELOAD = 3;
  24 .float wframe;
  25
  26 void(float fr, float t, void() func) weapon_thinkf;
  27
  28 vector w_shotorg;
  29 vector w_shotdir;
  30
  31 // this function calculates w_shotorg and w_shotdir based on the weapon model
  32 // offset, trueaim and antilag, and won't put w_shotorg inside a wall.
  33 // make sure you call makevectors first (FIXME?)
  34 void W_SetupShot(entity ent, vector vecs, float antilag, float recoil, string snd)
  35 {
  36         float nudge = 1; // added to traceline target and subtracted from result
  37         local vector trueaimpoint;
  38         local float oldsolid;
  39         oldsolid = self.dphitcontentsmask;
  40         self.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_CORPSE;
  41         traceline(self.origin + self.view_ofs, self.origin + self.view_ofs + v_forward * MAX_SHOT_DISTANCE, MOVE_NOMONSTERS, self);
  42         trueaimpoint = trace_endpos;
  43
  44         if(ent.weaponentity.movedir_x > 0)
  45         {
  46                 vecs = ent.weaponentity.movedir;
  47                 vecs_y = -vecs_y;
  48         }
  49         else if (cvar("g_shootfromeye"))
  50                 vecs_y = vecs_z = 0;
  51         else if (cvar("g_shootfromcenter"))
  52                 vecs_y = 0;
  53
  54         if(debug_shotorg != '0 0 0')
  55                 vecs = debug_shotorg;
  56
  57         w_shotorg = ent.origin + ent.view_ofs + v_right * vecs_y + v_up * vecs_z;
  58
  59         // now move the shotorg forward as much as requested if possible
  60         traceline(w_shotorg, w_shotorg + v_forward * (vecs_x + nudge), MOVE_NORMAL, self);
  61         w_shotorg = trace_endpos - v_forward * nudge;
  62         // calculate the shotdir from the chosen shotorg
  63         w_shotdir = normalize(trueaimpoint - w_shotorg);
  64
  65 #if 0
  66         // explanation of g_antilag:
  67         // if client reports it was aiming at a player, and the serverside trace
  68         // says it would miss, change the aim point to the player's new origin,
  69         // but only if the shot at the player's new origin would hit of course
  70         //
  71         // FIXME: a much better method for bullet weapons would be to leave a
  72         // trail of lagged 'ghosts' behind players, and see if the bullet hits the
  73         // ghost corresponding to this player's ping time, and if so it would do
  74         // damage to the real player
  75         if (antilag)
  76         if (self.cursor_trace_ent)                 // client was aiming at someone
  77         if (self.cursor_trace_ent != self)         // just to make sure
  78         if (self.cursor_trace_ent.takedamage)      // and that person is killable
  79         if (self.cursor_trace_ent.classname == "player") // and actually a player
  80         if (cvar("g_antilag") == 1)
  81         {
  82                 // verify that the shot would miss without antilag
  83                 // (avoids an issue where guns would always shoot at their origin)
  84                 traceline(w_shotorg, w_shotorg + w_shotdir * MAX_SHOT_DISTANCE, MOVE_NORMAL, self);
  85                 if (!trace_ent.takedamage)
  86                 {
  87                         // verify that the shot would hit if altered
  88                         traceline(w_shotorg, self.cursor_trace_ent.origin, MOVE_NORMAL, self);
  89                         if (trace_ent == self.cursor_trace_ent)
  90                         {
  91                                 // verify that the shot would hit in the past
  92                                 if(self.antilag_debug)
  93                                         antilag_takeback(self.cursor_trace_ent, time - self.antilag_debug);
  94                                 else
  95                                         antilag_takeback(self.cursor_trace_ent, time - ANTILAG_LATENCY(self));
  96
  97                                 traceline(self.origin + self.view_ofs, self.origin + self.view_ofs + v_forward * MAX_SHOT_DISTANCE, MOVE_NORMAL, self);
  98                                 antilag_restore(self.cursor_trace_ent);
  99
 100                                 if(trace_ent == self.cursor_trace_ent)
 101                                 {
 102                                         // HIT!
 103                                         w_shotdir = normalize(self.cursor_trace_ent.origin - w_shotorg);
 104                                         dprint("ANTILAG HIT for ", self.netname, "\n");
 105                                 }
 106                                 else
 107                                 {
 108                                         // prydon cursor aimbot or odd network conditions
 109                                         dprint("WARNING: antilag ghost trace for ", self.netname, " failed!\n");
 110                                 }
 111
 112                                 if(cvar("developer") >= 2)
 113                                 {
 114                                         vector v, vplus, vel;
 115                                         float X;
 116                                         v     = antilag_takebackorigin(self.cursor_trace_ent, time - (ANTILAG_LATENCY(self)       ));
 117                                         vplus = antilag_takebackorigin(self.cursor_trace_ent, time - (ANTILAG_LATENCY(self) + 0.01));
 118                                         vel = (vplus - v) * (1 / 0.01);
 119                                         // solve: v + X * vel = closest to self.origin + self.view_ofs, v_forward axis
 120                                         v     -= (self.origin + self.view_ofs);
 121                                         // solve: v + X * vel = closest to v_forward axis
 122                                         // project into 2D by subtracting v_forward components:
 123                                         v   -= (v   * v_forward) * v_forward;
 124                                         vel -= (vel * v_forward) * v_forward;
 125                                         // solve: v + X * vel = closest to origin
 126                                         // (v + X * vel)^2 closest to 0
 127                                         // v^2 + 2 * X * (v * vel) + X^2 * vel^2 closest to 0
 128                                         X = -(v * vel) / (vel * vel);
 129                                         dprint("dead center needs adjustment of ", ftos(X), " (that is, ", ftos(ANTILAG_LATENCY(self) + X), " instead of ", ftos(ANTILAG_LATENCY(self)), "\n");
 130                                 }
 131                         }
 132                 }
 133         }
 134 #else
 135         if (antilag)
 136         {
 137                 if (cvar("g_antilag") == 1) // switch to "ghost" if not hitting original
 138                 {
 139                         traceline(w_shotorg, w_shotorg + w_shotdir * MAX_SHOT_DISTANCE, MOVE_NORMAL, self);
 140                         if (!trace_ent.takedamage)
 141                         {
 142                                 traceline_antilag_force (self, w_shotorg, w_shotorg + w_shotdir * MAX_SHOT_DISTANCE, MOVE_NORMAL, self, ANTILAG_LATENCY(self));
 143                                 if (trace_ent.takedamage && trace_ent.classname == "player")
 144                                 {
 145                                         entity e;
 146                                         e = trace_ent;
 147                                         traceline(w_shotorg, e.origin, MOVE_NORMAL, self);
 148                                         if(trace_ent == e)
 149                                                 w_shotdir = normalize(trace_ent.origin - w_shotorg);
 150                                 }
 151                         }
 152                 }
 153                 else if(cvar("g_antilag") == 3) // client side hitscan
 154                 {
 155                         if (self.cursor_trace_ent)                 // client was aiming at someone
 156                         if (self.cursor_trace_ent != self)         // just to make sure
 157                         if (self.cursor_trace_ent.takedamage)      // and that person is killable
 158                         if (self.cursor_trace_ent.classname == "player") // and actually a player
 159                         {
 160                                 // verify that the shot would miss without antilag
 161                                 // (avoids an issue where guns would always shoot at their origin)
 162                                 traceline(w_shotorg, w_shotorg + w_shotdir * MAX_SHOT_DISTANCE, MOVE_NORMAL, self);
 163                                 if (!trace_ent.takedamage)
 164                                 {
 165                                         // verify that the shot would hit if altered
 166                                         traceline(w_shotorg, self.cursor_trace_ent.origin, MOVE_NORMAL, self);
 167                                         if (trace_ent == self.cursor_trace_ent)
 168                                                 w_shotdir = normalize(self.cursor_trace_ent.origin - w_shotorg);
 169                                         else
 170                                                 print("antilag fail\n");
 171                                 }
 172                         }
 173                 }
 174         }
 175 #endif
 176
 177         self.dphitcontentsmask = oldsolid; // restore solid type (generally SOLID_SLIDEBOX)
 178
 179         if (!g_norecoil)
 180                 self.punchangle_x = recoil * -1;
 181
 182         if (snd != "")
 183         {
 184                 sound (self, CHAN_WEAPON, snd, VOL_BASE, ATTN_NORM);
 185         }
 186
 187         if (self.items & IT_STRENGTH)
 188         if (!g_minstagib)
 189                 sound (self, CHAN_AUTO, "weapons/strength_fire.wav", VOL_BASE, ATTN_NORM);
 190 };
 191
 192 void LaserTarget_Think()
 193 {
 194         entity e;
 195         vector offset;
 196         float uselaser;
 197         uselaser = 0;
 198
 199         // list of weapons that will use the laser, and the options that enable it
 200         if(self.owner.laser_on && self.owner.weapon == WEP_ROCKET_LAUNCHER && g_laserguided_missile)
 201                 uselaser = 1;
 202         // example
 203         //if(self.owner.weapon == WEP_ELECTRO && cvar("g_laserguided_electro"))
 204         //      uselaser = 1;
 205
 206
 207
 208         // if a laser-enabled weapon isn't selected, delete any existing laser and quit
 209         if(!uselaser)
 210         {
 211                 // rocket launcher isn't selected, so no laser target.
 212                 if(self.lasertarget != world)
 213                 {
 214                         remove(self.lasertarget);
 215                         self.lasertarget = world;
 216                 }
 217                 return;
 218         }
 219
 220         if(!self.lasertarget)
 221         {
 222                 // we don't have a lasertarget entity, so spawn one
 223                 //bprint("create laser target\n");
 224                 e = self.lasertarget = spawn();
 225                 e.owner = self.owner;                   // Its owner is my owner
 226                 e.classname = "laser_target";
 227                 e.movetype = MOVETYPE_NOCLIP;   // don't touch things
 228                 setmodel(e, "models/laser_dot.mdl");    // what it looks like, precision set below
 229                 e.scale = 1.25;                         // make it larger
 230                 e.alpha = 0.25;                         // transparency
 231                 e.colormod = '255 0 0' * (1/255) * 8;   // change colors
 232                 e.effects = EF_FULLBRIGHT | EF_LOWPRECISION;
 233                 // make it dynamically glow
 234                 // you should avoid over-using this, as it can slow down the player's computer.
 235                 e.glow_color = 251; // red color
 236                 e.glow_size = 12;
 237         }
 238         else
 239                 e = self.lasertarget;
 240
 241         // move the laser dot to where the player is looking
 242
 243         makevectors(self.owner.v_angle); // set v_forward etc to the direction the player is looking
 244         offset = '0 0 26' + v_right*3;
 245         traceline(self.owner.origin + offset, self.owner.origin + offset + v_forward * MAX_SHOT_DISTANCE, FALSE, self); // trace forward until you hit something, like a player or wall
 246         setorigin(e, trace_endpos + v_forward*8); // move me to where the traceline ended
 247         if(trace_plane_normal != '0 0 0')
 248                 e.angles = vectoangles(trace_plane_normal);
 249         else
 250                 e.angles = vectoangles(v_forward);
 251 }
 252
 253 float CL_Weaponentity_CustomizeEntityForClient()
 254 {
 255         self.viewmodelforclient = self.owner;
 256         if(other.classname == "spectator")
 257                 if(other.enemy == self.owner)
 258                         self.viewmodelforclient = other;
 259         return TRUE;
 260 }
 261
 262 float qcweaponanimation;
 263 vector weapon_offset = '0 -10 0';
 264 vector weapon_adjust = '10 0 -15';
 265 .vector weapon_morph0origin;
 266 .vector weapon_morph0angles;
 267 .float  weapon_morph0time;
 268 .vector weapon_morph1origin;
 269 .vector weapon_morph1angles;
 270 .float  weapon_morph1time;
 271 .vector weapon_morph2origin;
 272 .vector weapon_morph2angles;
 273 .float  weapon_morph2time;
 274 .vector weapon_morph3origin;
 275 .vector weapon_morph3angles;
 276 .float  weapon_morph3time;
 277 .vector weapon_morph4origin;
 278 .vector weapon_morph4angles;
 279 .float  weapon_morph4time;
 280 .string weaponname;
 281 #define QCWEAPONANIMATION_ORIGIN(e) ((weapon_offset_x + e.view_ofs_x) * v_forward - (weapon_offset_y + e.view_ofs_y) * v_right + (weapon_offset_z + e.view_ofs_z) * v_up + weapon_adjust)
 282
 283 void CL_Weaponentity_Think()
 284 {
 285         float tb;
 286         self.nextthink = time;
 287         if (intermission_running)
 288                 self.frame = self.anim_idle_x;
 289         if (self.owner.weaponentity != self)
 290         {
 291                 if (self.weaponentity)
 292                         remove(self.weaponentity);
 293                 remove(self);
 294                 return;
 295         }
 296         if (self.owner.deadflag != DEAD_NO)
 297         {
 298                 self.model = "";
 299                 if (self.weaponentity)
 300                         self.weaponentity.model = "";
 301                 return;
 302         }
 303         if (self.cnt != self.owner.weapon || self.dmg != self.owner.modelindex || self.deadflag != self.owner.deadflag)
 304         {
 305                 self.cnt = self.owner.weapon;
 306                 self.dmg = self.owner.modelindex;
 307                 self.deadflag = self.owner.deadflag;
 308
 309                 string animfilename;
 310                 float animfile;
 311                 float modelfile;
 312                 if (self.owner.weaponname != "")
 313                 {
 314                         // if there is a child entity, hide it until we're sure we use it
 315                         if (self.weaponentity)
 316                                 self.weaponentity.model = "";
 317                         if (qcweaponanimation)
 318                                 setmodel(self, strcat("models/weapons/v_", self.owner.weaponname, ".md3")); // precision set below
 319                         else
 320                         {
 321                                 animfilename = strcat("models/weapons/h_", self.owner.weaponname, ".zym");
 322                                 modelfile = fopen(animfilename, FILE_READ);
 323                                 if (modelfile >= 0)
 324                                 {
 325                                         fclose(modelfile);
 326                                         self.anim_fire1  = '0 1 0.01';
 327                                         self.anim_fire2  = '1 1 0.01';
 328                                         self.anim_idle   = '2 1 0.01';
 329                                         self.anim_reload = '3 1 0.01';
 330                                         if (!self.weaponentity)
 331                                                 self.weaponentity = spawn();
 332                                         setmodel(self, strcat("models/weapons/h_", self.owner.weaponname, ".zym")); // precision set below
 333                                         setmodel(self.weaponentity, strcat("models/weapons/v_", self.owner.weaponname, ".md3")); // precision does not matter
 334                                         setattachment(self.weaponentity, self, "weapon");
 335                                 }
 336                                 else
 337                                 {
 338                                         animfilename = strcat("models/weapons/h_", self.owner.weaponname, ".dpm.animinfo");
 339                                         animfile = fopen(animfilename, FILE_READ);
 340                                         if (animfile >= 0)
 341                                         {
 342                                                 if (!self.weaponentity)
 343                                                         self.weaponentity = spawn();
 344                                                 setmodel(self, strcat("models/weapons/h_", self.owner.weaponname, ".dpm")); // precision set below
 345                                                 setmodel(self.weaponentity, strcat("models/weapons/v_", self.owner.weaponname, ".md3")); // precision does not matter
 346                                                 setattachment(self.weaponentity, self, "weapon");
 347                                         }
 348                                         else
 349                                         {
 350                                                 animfilename = strcat("models/weapons/w_", self.owner.weaponname, ".dpm.animinfo");
 351                                                 animfile = fopen(animfilename, FILE_READ);
 352                                                 if (animfile >= 0)
 353                                                         setmodel(self, strcat("models/weapons/w_", self.owner.weaponname, ".dpm")); // precision set below
 354                                         }
 355                                         if (animfile >= 0)
 356                                         {
 357                                                 animparseerror = FALSE;
 358                                                 self.anim_fire1  = animparseline(animfile);
 359                                                 self.anim_fire2  = animparseline(animfile);
 360                                                 self.anim_idle   = animparseline(animfile);
 361                                                 self.anim_reload = animparseline(animfile);
 362                                                 fclose(animfile);
 363                                                 if (animparseerror)
 364                                                         print("Parse error in ", animfilename, ", some player animations are broken\n");
 365                                         }
 366                                         else
 367                                         {
 368                                                 self.anim_fire1  = '0 1 0.01';
 369                                                 self.anim_fire2  = '1 1 0.01';
 370                                                 self.anim_idle   = '2 1 0.01';
 371                                                 self.anim_reload = '3 1 0.01';
 372                                                 setmodel(self, strcat("models/weapons/w_", self.owner.weaponname, ".zym")); // precision set below
 373                                         }
 374                                 }
 375                         }
 376                 }
 377                 else
 378                         self.model = "";
 379
 380                 if(qcweaponanimation)
 381                 {
 382                         self.angles = '0 0 0';
 383                         makevectors(self.angles_x * '-1 0 0' + self.angles_y * '0 1 0' + self.angles_z * '0 0 1');
 384                         self.movedir = weapon_offset_x * v_forward - weapon_offset_y * v_right + weapon_offset_z * v_up + weapon_adjust;
 385                         self.movedir_x += 30;
 386                 }
 387                 else
 388                 {
 389                         float idx;
 390                         idx = gettagindex(self, "shot");
 391                         if(!idx)
 392                         {
 393                                 print("WARNING: the weapon ", self.model, " does not support the correct shot origin tag.\n");
 394                                 idx = gettagindex(self, "bone02");
 395                         }
 396                         if(idx)
 397                         {
 398                                 self.origin = '0 0 0';
 399                                 self.angles = '0 0 0';
 400                                 self.frame = 0;
 401                                 self.viewmodelforclient = world;
 402                                 self.movedir = gettaginfo(self, idx);
 403                                 self.viewmodelforclient = self.owner;
 404                         }
 405                         else
 406                                 self.movedir = '0 0 0';
 407                 }
 408
 409                 self.view_ofs = '0 0 0';
 410
 411                 if(cvar("g_shootfromcenter") || cvar("g_shootfromeye"))
 412                 if(self.movedir_x >= 0)
 413                 {
 414                         self.view_ofs_y = -self.movedir_y;
 415                         self.movedir += self.view_ofs;
 416                 }
 417
 418                 if(cvar("g_shootfromeye"))
 419                 {
 420                         self.movedir_z = 0;
 421                 }
 422
 423                 // check if an instant weapon switch occurred
 424                 if (qcweaponanimation)
 425                 {
 426                         if (self.state == WS_READY)
 427                         {
 428                                 self.angles = '0 0 0';
 429                                 makevectors(self.angles_x * '-1 0 0' + self.angles_y * '0 1 0' + self.angles_z * '0 0 1');
 430                                 setorigin(self, QCWEAPONANIMATION_ORIGIN(self));
 431                         }
 432                 }
 433                 else
 434                         setorigin(self, self.view_ofs);
 435                 // reset animstate now
 436                 self.wframe = WFRAME_IDLE;
 437                 self.weapon_morph0time = 0;
 438                 self.weapon_morph1time = 0;
 439                 self.weapon_morph2time = 0;
 440                 self.weapon_morph3time = 0;
 441                 self.weapon_morph4time = 0;
 442                 setanim(self, self.anim_idle, TRUE, FALSE, TRUE);
 443         }
 444
 445         tb = (self.effects & EF_TELEPORT_BIT);
 446         self.effects = self.owner.effects - (self.owner.effects & EF_LOWPRECISION);// | EF_LOWPRECISION;
 447         self.effects &~= EF_FULLBRIGHT; // can mask team color, so get rid of it
 448         self.effects &~= EF_TELEPORT_BIT;
 449         self.effects |= tb;
 450
 451         if(self.owner.alpha != 0)
 452                 self.alpha = self.owner.alpha;
 453         else
 454                 self.alpha = 1;
 455
 456         self.colormap = self.owner.colormap;
 457         if (self.weaponentity)
 458         {
 459                 self.weaponentity.effects = self.effects & EF_ADDITIVE;
 460                 self.weaponentity.alpha = self.alpha;
 461                 self.weaponentity.colormap = self.colormap;
 462         }
 463
 464         self.angles = '0 0 0';
 465         local float f;
 466         f = 0;
 467         if (self.state == WS_RAISE)
 468         {
 469                 f = (self.owner.weapon_nextthink - time) / cvar("g_balance_weaponswitchdelay");
 470                 self.angles_x = -90 * f * f;
 471                 if (qcweaponanimation)
 472                 {
 473                         makevectors(self.angles_x * '-1 0 0' + self.angles_y * '0 1 0' + self.angles_z * '0 0 1');
 474                         setorigin(self, QCWEAPONANIMATION_ORIGIN(self));
 475                 }
 476         }
 477         else if (self.state == WS_DROP)
 478         {
 479                 f = 1 - (self.owner.weapon_nextthink - time) / cvar("g_balance_weaponswitchdelay");
 480                 self.angles_x = -90 * f * f;
 481                 if (qcweaponanimation)
 482                 {
 483                         makevectors(self.angles_x * '-1 0 0' + self.angles_y * '0 1 0' + self.angles_z * '0 0 1');
 484                         setorigin(self, QCWEAPONANIMATION_ORIGIN(self));
 485                 }
 486         }
 487         else if (self.state == WS_CLEAR)
 488         {
 489                 f = 1;
 490                 self.angles_x = -90 * f * f;
 491                 if (qcweaponanimation)
 492                 {
 493                         makevectors(self.angles_x * '-1 0 0' + self.angles_y * '0 1 0' + self.angles_z * '0 0 1');
 494                         setorigin(self, QCWEAPONANIMATION_ORIGIN(self));
 495                 }
 496         }
 497         else if (qcweaponanimation && time < self.owner.weapon_morph1time)
 498         {
 499                 f = (time - self.owner.weapon_morph0time) / (self.owner.weapon_morph1time - self.owner.weapon_morph0time);
 500                 f = 1 - pow(1 - f, 3);
 501                 self.angles = self.owner.weapon_morph0angles * (1 - f) + self.owner.weapon_morph1angles * f;
 502                 setorigin(self, self.owner.weapon_morph0origin * (1 - f) + self.owner.weapon_morph1origin * f);
 503         }
 504         else if (qcweaponanimation && time < self.owner.weapon_morph2time)
 505         {
 506                 f = (time - self.owner.weapon_morph1time) / (self.owner.weapon_morph2time - self.owner.weapon_morph1time);
 507                 f = 1 - pow(1 - f, 3);
 508                 self.angles = self.owner.weapon_morph1angles * (1 - f) + self.owner.weapon_morph2angles * f;
 509                 setorigin(self, self.owner.weapon_morph1origin * (1 - f) + self.owner.weapon_morph2origin * f);
 510         }
 511         else if (qcweaponanimation && time < self.owner.weapon_morph3time)
 512         {
 513                 f = (time - self.owner.weapon_morph2time) / (self.owner.weapon_morph3time - self.owner.weapon_morph2time);
 514                 f = 1 - pow(1 - f, 3);
 515                 self.angles = self.owner.weapon_morph2angles * (1 - f) + self.owner.weapon_morph3angles * f;
 516                 setorigin(self, self.owner.weapon_morph2origin * (1 - f) + self.owner.weapon_morph3origin * f);
 517         }
 518         else if (qcweaponanimation && time < self.owner.weapon_morph4time)
 519         {
 520                 f = (time - self.owner.weapon_morph3time) / (self.owner.weapon_morph4time - self.owner.weapon_morph3time);
 521                 f = 1 - pow(1 - f, 3);
 522                 self.angles = self.owner.weapon_morph3angles * (1 - f) + self.owner.weapon_morph4angles * f;
 523                 setorigin(self, self.owner.weapon_morph3origin * (1 - f) + self.owner.weapon_morph4origin * f);
 524         }
 525         else if (qcweaponanimation)
 526         {
 527                 // begin a new idle morph
 528                 self.owner.weapon_morph0time   = time;
 529                 self.owner.weapon_morph0angles = self.angles;
 530                 self.owner.weapon_morph0origin = self.origin;
 531
 532                 float r;
 533                 float t;
 534
 535                 r = random();
 536                 if (r < 0.1)
 537                 {
 538                         // turn gun to the left to look at it
 539                         t = 2;
 540                         self.owner.weapon_morph1time   = time + t * 0.2;
 541                         self.owner.weapon_morph1angles = randomvec() * 3 + '-5 30 0';
 542                         makevectors(self.owner.weapon_morph1angles_x * '-1 0 0' + self.owner.weapon_morph1angles_y * '0 1 0' + self.owner.weapon_morph1angles_z * '0 0 1');
 543                         self.owner.weapon_morph1origin = QCWEAPONANIMATION_ORIGIN(self);
 544
 545                         self.owner.weapon_morph2time   = time + t * 0.6;
 546                         self.owner.weapon_morph2angles = randomvec() * 3 + '-5 30 0';
 547                         makevectors(self.owner.weapon_morph2angles_x * '-1 0 0' + self.owner.weapon_morph2angles_y * '0 1 0' + self.owner.weapon_morph2angles_z * '0 0 1');
 548                         self.owner.weapon_morph2origin = QCWEAPONANIMATION_ORIGIN(self);
 549
 550                         self.owner.weapon_morph3time   = time + t;
 551                         self.owner.weapon_morph3angles = '0 0 0';
 552                         makevectors(self.owner.weapon_morph3angles_x * '-1 0 0' + self.owner.weapon_morph3angles_y * '0 1 0' + self.owner.weapon_morph3angles_z * '0 0 1');
 553                         self.owner.weapon_morph3origin = QCWEAPONANIMATION_ORIGIN(self);
 554                 }
 555                 else if (r < 0.2)
 556                 {
 557                         // raise the gun a bit
 558                         t = 2;
 559                         self.owner.weapon_morph1time   = time + t * 0.2;
 560                         self.owner.weapon_morph1angles = randomvec() * 3 + '30 -10 0';
 561                         makevectors(self.owner.weapon_morph1angles_x * '-1 0 0' + self.owner.weapon_morph1angles_y * '0 1 0' + self.owner.weapon_morph1angles_z * '0 0 1');
 562                         self.owner.weapon_morph1origin = QCWEAPONANIMATION_ORIGIN(self);
 563
 564                         self.owner.weapon_morph2time   = time + t * 0.5;
 565                         self.owner.weapon_morph2angles = randomvec() * 3 + '30 -10 5';
 566                         makevectors(self.owner.weapon_morph2angles_x * '-1 0 0' + self.owner.weapon_morph2angles_y * '0 1 0' + self.owner.weapon_morph2angles_z * '0 0 1');
 567                         self.owner.weapon_morph2origin = QCWEAPONANIMATION_ORIGIN(self);
 568
 569                         self.owner.weapon_morph3time   = time + t;
 570                         self.owner.weapon_morph3angles = '0 0 0';
 571                         makevectors(self.owner.weapon_morph3angles_x * '-1 0 0' + self.owner.weapon_morph3angles_y * '0 1 0' + self.owner.weapon_morph3angles_z * '0 0 1');
 572                         self.owner.weapon_morph3origin = QCWEAPONANIMATION_ORIGIN(self);
 573                 }
 574                 else if (r < 0.3)
 575                 {
 576                         // tweak it a bit
 577                         t = 5;
 578                         self.owner.weapon_morph1time   = time + t * 0.3;
 579                         self.owner.weapon_morph1angles = randomvec() * 6;
 580                         makevectors(self.owner.weapon_morph1angles_x * '-1 0 0' + self.owner.weapon_morph1angles_y * '0 1 0' + self.owner.weapon_morph1angles_z * '0 0 1');
 581                         self.owner.weapon_morph1origin = QCWEAPONANIMATION_ORIGIN(self);
 582
 583                         self.owner.weapon_morph2time   = time + t * 0.7;
 584                         self.owner.weapon_morph2angles = randomvec() * 6;
 585                         makevectors(self.owner.weapon_morph2angles_x * '-1 0 0' + self.owner.weapon_morph2angles_y * '0 1 0' + self.owner.weapon_morph2angles_z * '0 0 1');
 586                         self.owner.weapon_morph2origin = QCWEAPONANIMATION_ORIGIN(self);
 587
 588                         self.owner.weapon_morph3time   = time + t;
 589                         self.owner.weapon_morph3angles = '0 0 0';
 590                         makevectors(self.owner.weapon_morph3angles_x * '-1 0 0' + self.owner.weapon_morph3angles_y * '0 1 0' + self.owner.weapon_morph3angles_z * '0 0 1');
 591                         self.owner.weapon_morph3origin = QCWEAPONANIMATION_ORIGIN(self);
 592                 }
 593                 else
 594                 {
 595                         // hold it mostly steady
 596                         t = random() * 6 + 4;
 597                         self.owner.weapon_morph1time   = time + t * 0.2;
 598                         self.owner.weapon_morph1angles = randomvec() * 1;
 599                         makevectors(self.owner.weapon_morph1angles_x * '-1 0 0' + self.owner.weapon_morph1angles_y * '0 1 0' + self.owner.weapon_morph1angles_z * '0 0 1');
 600                         self.owner.weapon_morph1origin = QCWEAPONANIMATION_ORIGIN(self);
 601
 602                         self.owner.weapon_morph2time   = time + t * 0.5;
 603                         self.owner.weapon_morph2angles = randomvec() * 1;
 604                         makevectors(self.owner.weapon_morph2angles_x * '-1 0 0' + self.owner.weapon_morph2angles_y * '0 1 0' + self.owner.weapon_morph2angles_z * '0 0 1');
 605                         self.owner.weapon_morph2origin = QCWEAPONANIMATION_ORIGIN(self);
 606
 607                         self.owner.weapon_morph3time   = time + t * 0.7;
 608                         self.owner.weapon_morph3angles = randomvec() * 1;
 609                         makevectors(self.owner.weapon_morph3angles_x * '-1 0 0' + self.owner.weapon_morph3angles_y * '0 1 0' + self.owner.weapon_morph3angles_z * '0 0 1');
 610                         self.owner.weapon_morph3origin = QCWEAPONANIMATION_ORIGIN(self);
 611                 }
 612
 613                 self.owner.weapon_morph4time   = time + t;
 614                 self.owner.weapon_morph4angles = '0 0 0';
 615                 makevectors(self.owner.weapon_morph4angles_x * '-1 0 0' + self.owner.weapon_morph4angles_y * '0 1 0' + self.owner.weapon_morph4angles_z * '0 0 1');
 616                 self.owner.weapon_morph4origin = QCWEAPONANIMATION_ORIGIN(self);
 617
 618         }
 619
 620         // create or update the lasertarget entity
 621         LaserTarget_Think();
 622 };
 623
 624 void CL_ExteriorWeaponentity_Think()
 625 {
 626         float tag_found;
 627         self.nextthink = time;
 628         if (self.owner.exteriorweaponentity != self)
 629         {
 630                 remove(self);
 631                 return;
 632         }
 633         if (self.owner.deadflag != DEAD_NO)
 634         {
 635                 self.model = "";
 636                 return;
 637         }
 638         if (self.cnt != self.owner.weapon || self.dmg != self.owner.modelindex || self.deadflag != self.owner.deadflag)
 639         {
 640                 self.cnt = self.owner.weapon;
 641                 self.dmg = self.owner.modelindex;
 642                 self.deadflag = self.owner.deadflag;
 643                 if (self.owner.weaponname != "")
 644                         setmodel(self, strcat("models/weapons/v_", self.owner.weaponname, ".md3")); // precision set below
 645                 else
 646                         self.model = "";
 647
 648                 if((tag_found = gettagindex(self.owner, "tag_weapon")))
 649                 {
 650                         self.tag_index = tag_found;
 651                         self.tag_entity = self.owner;
 652                 }
 653                 else
 654                         setattachment(self, self.owner, "bip01 r hand");
 655
 656                 // if that didn't find a tag, hide the exterior weapon model
 657                 if (!self.tag_index)
 658                         self.model = "";
 659         }
 660         self.effects = self.owner.effects | EF_LOWPRECISION;
 661         self.effects = self.effects & EFMASK_CHEAP; // eat performance
 662         if(self.owner.alpha != 0)
 663                 self.alpha = self.owner.alpha;
 664         else
 665                 self.alpha = 1;
 666
 667         self.colormap = self.owner.colormap;
 668 };
 669
 670 // spawning weaponentity for client
 671 void CL_SpawnWeaponentity()
 672 {
 673         self.weaponentity = spawn();
 674         self.weaponentity.classname = "weaponentity";
 675         self.weaponentity.solid = SOLID_NOT;
 676         self.weaponentity.owner = self;
 677         setmodel(self.weaponentity, ""); // precision set when changed
 678         self.weaponentity.origin = '0 0 0';
 679         self.weaponentity.angles = '0 0 0';
 680         self.weaponentity.viewmodelforclient = self;
 681         self.weaponentity.flags = 0;
 682         self.weaponentity.think = CL_Weaponentity_Think;
 683         self.weaponentity.customizeentityforclient = CL_Weaponentity_CustomizeEntityForClient;
 684         self.weaponentity.nextthink = time;
 685
 686         self.exteriorweaponentity = spawn();
 687         self.exteriorweaponentity.classname = "exteriorweaponentity";
 688         self.exteriorweaponentity.solid = SOLID_NOT;
 689         self.exteriorweaponentity.exteriorweaponentity = self.exteriorweaponentity;
 690         self.exteriorweaponentity.owner = self;
 691         self.exteriorweaponentity.origin = '0 0 0';
 692         self.exteriorweaponentity.angles = '0 0 0';
 693         self.exteriorweaponentity.think = CL_ExteriorWeaponentity_Think;
 694         self.exteriorweaponentity.nextthink = time;
 695 };
 696
 697 .float hasweapon_complain_spam;
 698
 699 float client_hasweapon(entity cl, float wpn, float andammo, float complain)
 700 {
 701         local float weaponbit, f;
 702         local entity oldself;
 703
 704         if(time < self.hasweapon_complain_spam)
 705                 complain = 0;
 706         if(complain)
 707                 self.hasweapon_complain_spam = time + 0.2;
 708
 709         if (wpn < WEP_FIRST || wpn > WEP_LAST)
 710         {
 711                 if (complain)
 712                         sprint(self, "Invalid weapon\n");
 713                 return FALSE;
 714         }
 715         weaponbit = W_WeaponBit(wpn);
 716         if (cl.weapons & weaponbit)
 717         {
 718                 if (andammo)
 719                 {
 720                         if(cl.items & IT_UNLIMITED_WEAPON_AMMO)
 721                         {
 722                                 f = 1;
 723                         }
 724                         else
 725                         {
 726                                 oldself = self;
 727                                 self = cl;
 728                                 f = weapon_action(wpn, WR_CHECKAMMO1);
 729                                 f = f + weapon_action(wpn, WR_CHECKAMMO2);
 730                                 self = oldself;
 731                         }
 732                         if (!f)
 733                         {
 734                                 if (complain)
 735                                         sprint(cl, strcat("You don't have any ammo for the ^2", W_Name(wpn), "\n"));
 736                                 return FALSE;
 737                         }
 738                 }
 739                 return TRUE;
 740         }
 741         if (complain)
 742         {
 743                 // DRESK - 3/16/07
 744                 // Report Proper Weapon Status / Modified Weapon Ownership Message
 745                 if(weaponsInMap & weaponbit)
 746                 {
 747                         sprint(cl, strcat("You do not have the ^2", W_Name(wpn), "\n") );
 748
 749                         if(cvar("g_showweaponspawns"))
 750                         {
 751                                 entity e;
 752                                 string s;
 753
 754                                 e = get_weaponinfo(wpn);
 755                                 s = e.model2;
 756
 757                                 for(e = world; (e = findfloat(e, weapons, weaponbit)); )
 758                                 {
 759                                         if(e.classname == "droppedweapon")
 760                                                 continue;
 761                                         if not(e.flags & FL_ITEM)
 762                                                 continue;
 763                                         WaypointSprite_Spawn(
 764                                                 s,
 765                                                 1, 0,
 766                                                 world, e.origin,
 767                                                 self, 0,
 768                                                 world, enemy,
 769                                                 0
 770                                         );
 771                                 }
 772                         }
 773                 }
 774                 else
 775                         sprint(cl, strcat("The ^2", W_Name(wpn), "^7 is ^1NOT AVAILABLE^7 in this map\n") );
 776         }
 777         return FALSE;
 778 };
 779
 780 // Weapon subs
 781 void w_clear()
 782 {
 783         if (self.weapon != -1)
 784                 self.weapon = 0;
 785         if (self.weaponentity)
 786         {
 787                 self.weaponentity.state = WS_CLEAR;
 788                 self.weaponentity.effects = 0;
 789         }
 790 };
 791
 792 void w_ready()
 793 {
 794         if (self.weaponentity)
 795                 self.weaponentity.state = WS_READY;
 796         weapon_thinkf(WFRAME_IDLE, 1000000, w_ready);
 797 };
 798
 799 // Setup weapon for client (after this raise frame will be launched)
 800 void weapon_setup(float windex)
 801 {
 802         entity e;
 803         qcweaponanimation = cvar("sv_qcweaponanimation");
 804         e = get_weaponinfo(windex);
 805         self.items &~= IT_AMMO;
 806         self.items = self.items | e.items;
 807
 808         // the two weapon entities will notice this has changed and update their models
 809         self.weapon = windex;
 810         self.weaponname = e.mdl;
 811         self.bulletcounter = 0;
 812 };
 813
 814 // perform weapon to attack (weaponstate and attack_finished check is here)
 815 .float race_penalty;
 816 float weapon_prepareattack(float secondary, float attacktime)
 817 {
 818         //if sv_ready_restart_after_countdown is set, don't allow the player to shoot
 819         //if all players readied up and the countdown is running
 820         if (cvar("sv_ready_restart_after_countdown"))
 821                 if(time < game_starttime || time < self.race_penalty) {
 822                         return FALSE;
 823                 }
 824
 825         if not(self.items & IT_UNLIMITED_WEAPON_AMMO)
 826         if (!weapon_action(self.weapon, WR_CHECKAMMO1 + secondary))
 827         {
 828                 W_SwitchWeapon_Force(self, w_getbestweapon(self));
 829                 return FALSE;
 830         }
 831
 832         if (timeoutStatus == 2) //don't allow the player to shoot while game is paused
 833                 return FALSE;
 834
 835         // do not even think about shooting if switching
 836         if(self.switchweapon != self.weapon)
 837                 return FALSE;
 838
 839         // don't fire if previous attack is not finished
 840         if(attacktime >= 0)
 841                 if (ATTACK_FINISHED(self) > time + frametime * 0.5)
 842                         return FALSE;
 843         // don't fire while changing weapon
 844         if (self.weaponentity.state != WS_READY)
 845                 return FALSE;
 846         self.weaponentity.state = WS_INUSE;
 847
 848         self.spawnshieldtime = min(self.spawnshieldtime, time); // kill spawn shield when you fire
 849
 850         // if the weapon hasn't been firing continuously, reset the timer
 851         if(attacktime >= 0)
 852         {
 853                 if (ATTACK_FINISHED(self) < time - frametime * 1.5)
 854                 {
 855                         ATTACK_FINISHED(self) = time;
 856                         //dprint("resetting attack finished to ", ftos(time), "\n");
 857                 }
 858                 ATTACK_FINISHED(self) = ATTACK_FINISHED(self) + attacktime;
 859         }
 860         self.bulletcounter += 1;
 861         //dprint("attack finished ", ftos(ATTACK_FINISHED(self)), "\n");
 862         return TRUE;
 863 };
 864
 865 void weapon_thinkf(float fr, float t, void() func)
 866 {
 867         vector a;
 868         vector of, or, ou;
 869         float restartanim;
 870
 871         if(fr == WFRAME_DONTCHANGE)
 872         {
 873                 fr = self.weaponentity.wframe;
 874                 restartanim = FALSE;
 875         }
 876         else if (fr == WFRAME_IDLE)
 877                 restartanim = FALSE;
 878         else
 879                 restartanim = TRUE;
 880
 881         of = v_forward;
 882         or = v_right;
 883         ou = v_up;
 884
 885         if (self.weaponentity)
 886         {
 887                 self.weaponentity.wframe = fr;
 888                 if (qcweaponanimation)
 889                 {
 890                         if (fr != WFRAME_IDLE)
 891                         {
 892                                 self.weapon_morph0time = time;
 893                                 self.weapon_morph0angles = self.weaponentity.angles;
 894                                 self.weapon_morph0origin = self.weaponentity.origin;
 895
 896                                 self.weapon_morph1angles = '0 0 0';
 897                                 self.weapon_morph1time = time + t;
 898                                 makevectors(self.weapon_morph1angles_x * '-1 0 0' + self.weapon_morph1angles_y * '0 1 0' + self.weapon_morph1angles_z * '0 0 1');
 899                                 self.weapon_morph1origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 900
 901                                 self.weapon_morph2angles = '0 0 0';
 902                                 self.weapon_morph2time = time + t;
 903                                 makevectors(self.weapon_morph2angles_x * '-1 0 0' + self.weapon_morph2angles_y * '0 1 0' + self.weapon_morph2angles_z * '0 0 1');
 904                                 self.weapon_morph2origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 905
 906                                 self.weapon_morph3angles = '0 0 0';
 907                                 self.weapon_morph3time = time + t;
 908                                 makevectors(self.weapon_morph3angles_x * '-1 0 0' + self.weapon_morph3angles_y * '0 1 0' + self.weapon_morph3angles_z * '0 0 1');
 909                                 self.weapon_morph3origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 910
 911                                 self.weapon_morph4angles = '0 0 0';
 912                                 self.weapon_morph4time = time + t;
 913                                 makevectors(self.weapon_morph4angles_x * '-1 0 0' + self.weapon_morph4angles_y * '0 1 0' + self.weapon_morph4angles_z * '0 0 1');
 914                                 self.weapon_morph4origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 915
 916                                 if (fr == WFRAME_FIRE1)
 917                                 {
 918                                         self.weapon_morph1angles = '5 0 0';
 919                                         self.weapon_morph1time = time + t * 0.1;
 920                                         makevectors(self.weapon_morph1angles_x * '-1 0 0' + self.weapon_morph1angles_y * '0 1 0' + self.weapon_morph1angles_z * '0 0 1');
 921                                         self.weapon_morph1origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 922                                         self.weapon_morph4time = time + t + 1; // delay idle effect
 923                                 }
 924                                 else if (fr == WFRAME_FIRE2)
 925                                 {
 926                                         self.weapon_morph1angles = '10 0 0';
 927                                         self.weapon_morph1time = time + t * 0.1;
 928                                         makevectors(self.weapon_morph1angles_x * '-1 0 0' + self.weapon_morph1angles_y * '0 1 0' + self.weapon_morph1angles_z * '0 0 1');
 929                                         self.weapon_morph1origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 930                                         self.weapon_morph4time = time + t + 1; // delay idle effect
 931                                 }
 932                                 else if (fr == WFRAME_RELOAD)
 933                                 {
 934                                         self.weapon_morph1time = time + t * 0.05;
 935                                         self.weapon_morph1angles = '-10 40 0';
 936                                         makevectors(self.weapon_morph1angles_x * '-1 0 0' + self.weapon_morph1angles_y * '0 1 0' + self.weapon_morph1angles_z * '0 0 1');
 937                                         self.weapon_morph1origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 938
 939                                         self.weapon_morph2time = time + t * 0.15;
 940                                         self.weapon_morph2angles = '-10 40 5';
 941                                         makevectors(self.weapon_morph2angles_x * '-1 0 0' + self.weapon_morph2angles_y * '0 1 0' + self.weapon_morph2angles_z * '0 0 1');
 942                                         self.weapon_morph2origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 943
 944                                         self.weapon_morph3time = time + t * 0.25;
 945                                         self.weapon_morph3angles = '-10 40 0';
 946                                         makevectors(self.weapon_morph3angles_x * '-1 0 0' + self.weapon_morph3angles_y * '0 1 0' + self.weapon_morph3angles_z * '0 0 1');
 947                                         self.weapon_morph3origin = QCWEAPONANIMATION_ORIGIN(self.weaponentity);
 948                                 }
 949                         }
 950                 }
 951                 else
 952                 {
 953                         if (fr == WFRAME_IDLE)
 954                                 a = self.weaponentity.anim_idle;
 955                         else if (fr == WFRAME_FIRE1)
 956                                 a = self.weaponentity.anim_fire1;
 957                         else if (fr == WFRAME_FIRE2)
 958                                 a = self.weaponentity.anim_fire2;
 959                         else if (fr == WFRAME_RELOAD)
 960                                 a = self.weaponentity.anim_reload;
 961                         setanim(self.weaponentity, a, restartanim == FALSE, restartanim, restartanim);
 962                 }
 963
 964                 if(restartanim)
 965                 {
 966                         BITXOR_ASSIGN(self.weaponentity.effects, EF_TELEPORT_BIT);
 967                 }
 968         }
 969
 970         v_forward = of;
 971         v_right = or;
 972         v_up = ou;
 973
 974         if(self.weapon_think == w_ready && func != w_ready && self.weaponentity.state == WS_RAISE)
 975         {
 976                 backtrace("Tried to override initial weapon think function - should this really happen?");
 977         }
 978
 979         if(g_runematch)
 980         {
 981                 if(self.runes & RUNE_SPEED)
 982                 {
 983                         if(self.runes & CURSE_SLOW)
 984                                 t = t * cvar("g_balance_rune_speed_combo_atkrate");
 985                         else
 986                                 t = t * cvar("g_balance_rune_speed_atkrate");
 987                 }
 988                 else if(self.runes & CURSE_SLOW)
 989                 {
 990                         t = t * cvar("g_balance_curse_slow_atkrate");
 991                 }
 992         }
 993
 994         // VorteX: haste can be added here
 995         if (self.weapon_think == w_ready)
 996         {
 997                 self.weapon_nextthink = time;
 998                 //dprint("started firing at ", ftos(time), "\n");
 999         }
1000         if (self.weapon_nextthink < time - frametime * 1.5 || self.weapon_nextthink > time + frametime * 1.5)
1001         {
1002                 self.weapon_nextthink = time;
1003                 //dprint("reset weapon animation timer at ", ftos(time), "\n");
1004         }
1005         self.weapon_nextthink = self.weapon_nextthink + t;
1006         self.weapon_think = func;
1007         //dprint("next ", ftos(self.weapon_nextthink), "\n");
1008
1009         if (restartanim)
1010         if (t)
1011         if (!self.crouch) // shoot anim stands up, this looks bad
1012         {
1013                 local vector anim;
1014                 anim = self.anim_shoot;
1015                 anim_z = anim_y / t;
1016                 setanim(self, anim, FALSE, TRUE, TRUE);
1017         }
1018 };
1019
1020 void weapon_boblayer1(float spd, vector org)
1021 {
1022         // VorteX: haste can be added here
1023 };
1024
1025 vector W_CalculateProjectileVelocity(vector pvelocity, vector mvelocity)
1026 {
1027         vector mdirection;
1028         float mspeed;
1029         float outspeed;
1030         float nstyle;
1031         vector outvelocity;
1032
1033         mdirection = normalize(mvelocity);
1034         mspeed = vlen(mvelocity);
1035
1036         nstyle = cvar("g_projectiles_newton_style");
1037         if(nstyle == 0)
1038         {
1039                 // absolute velocity
1040                 outvelocity = mvelocity;
1041         }
1042         else if(nstyle == 1)
1043         {
1044                 // true Newtonian projectiles
1045                 outvelocity = pvelocity + mvelocity;
1046         }
1047         else if(nstyle == 2)
1048         {
1049                 // true Newtonian projectiles with automatic aim adjustment
1050                 //
1051                 // solve: |outspeed * mdirection - pvelocity| = mspeed
1052                 // outspeed^2 - 2 * outspeed * (mdirection * pvelocity) + pvelocity^2 - mspeed^2 = 0
1053                 // outspeed = (mdirection * pvelocity) +- sqrt((mdirection * pvelocity)^2 - pvelocity^2 + mspeed^2)
1054                 // PLUS SIGN!
1055                 // not defined?
1056                 // then...
1057                 // pvelocity^2 - (mdirection * pvelocity)^2 > mspeed^2
1058                 // velocity without mdirection component > mspeed
1059                 // fire at smallest possible mspeed that works?
1060                 // |(mdirection * pvelocity) * pvelocity - pvelocity| = mspeed
1061
1062                 float D;
1063                 float p;
1064                 float q;
1065                 p = mdirection * pvelocity;
1066                 q = pvelocity * pvelocity - mspeed * mspeed;
1067                 D = p * p - q;
1068                 if(D < 0)
1069                 {
1070                         //dprint("impossible shot, adjusting\n");
1071                         D = 0;
1072                 }
1073                 outspeed = p + sqrt(D);
1074                 outspeed = bound(mspeed * 0.7, outspeed, mspeed * 5.0);
1075                 outvelocity = mdirection * outspeed;
1076         }
1077         else if(nstyle == 3)
1078         {
1079                 // pseudo-Newtonian:
1080                 outspeed = mspeed + mdirection * pvelocity;
1081                 outspeed = bound(mspeed * 0.7, outspeed, mspeed * 5.0);
1082                 outvelocity = mdirection * outspeed;
1083         }
1084         else if(nstyle == 4)
1085         {
1086                 // tZorkian:
1087                 outspeed = mspeed + vlen(pvelocity);
1088                 outvelocity = mdirection * outspeed;
1089         }
1090         else
1091                 error("g_projectiles_newton_style must be 0 (absolute), 1 (Newtonian), 2 (Newtonian + aimfix), 3 (pseudo Newtonian) or 4 (tZorkian)!");
1092
1093         return outvelocity;
1094 }
1095
1096 void W_SetupProjectileVelocity(entity missile)
1097 {
1098         if(missile.owner == world)
1099                 error("Unowned missile");
1100
1101         missile.velocity = W_CalculateProjectileVelocity(missile.owner.velocity, missile.velocity);
1102 }