data/qcsrc/server/cl_weaponsystem.qc

   1 /*
   2 ===========================================================================
   3
   4   CLIENT WEAPONSYSTEM CODE
   5   Bring back W_Weaponframe
   6
   7 ===========================================================================
   8 */
   9
  10 .float antilag_debug;
  11
  12 // VorteX: static frame globals
  13 float WFRAME_FIRE1 = 0;
  14 float WFRAME_FIRE2 = 1;
  15 float WFRAME_IDLE = 2;
  16
  17 void(float fr, float t, void() func) weapon_thinkf;
  18
  19 vector w_shotorg;
  20 vector w_shotdir;
  21
  22 // this function calculates w_shotorg and w_shotdir based on the weapon model
  23 // offset, trueaim and antilag, and won't put w_shotorg inside a wall.
  24 // make sure you call makevectors first (FIXME?)
  25 void W_SetupShot(entity ent, vector vecs, float antilag, float recoil, string snd)
  26 {
  27         float nudge = 1; // added to traceline target and subtracted from result
  28         local vector trueaimpoint;
  29         local float oldsolid;
  30         oldsolid = self.solid;
  31         self.solid = SOLID_BBOX; // make all shot test traces bypass playerclip
  32         traceline(self.origin + self.view_ofs, self.origin + self.view_ofs + v_forward * MAX_SHOT_DISTANCE, MOVE_NOMONSTERS, self);
  33         trueaimpoint = trace_endpos;
  34
  35         if (cvar("g_shootfromeye"))
  36                 w_shotorg = ent.origin + ent.view_ofs;
  37         else if (cvar("g_shootfromcenter"))
  38                 w_shotorg = ent.origin + ent.view_ofs + '0 0 1' * vecs_z;
  39         else
  40                 w_shotorg = ent.origin + ent.view_ofs + v_right * vecs_y + v_up * vecs_z;
  41         // now move the shotorg forward as much as requested if possible
  42         traceline(w_shotorg, w_shotorg + v_forward * (vecs_x + nudge), MOVE_NORMAL, self);
  43         w_shotorg = trace_endpos - v_forward * nudge;
  44         // calculate the shotdir from the chosen shotorg
  45         w_shotdir = normalize(trueaimpoint - w_shotorg);
  46
  47         // explanation of g_antilag:
  48         // if client reports it was aiming at a player, and the serverside trace
  49         // says it would miss, change the aim point to the player's new origin,
  50         // but only if the shot at the player's new origin would hit of course
  51         //
  52         // FIXME: a much better method for bullet weapons would be to leave a
  53         // trail of lagged 'ghosts' behind players, and see if the bullet hits the
  54         // ghost corresponding to this player's ping time, and if so it would do
  55         // damage to the real player
  56         if (antilag)
  57         if (self.cursor_trace_ent)                 // client was aiming at someone
  58         if (self.cursor_trace_ent != self)         // just to make sure
  59         if (self.cursor_trace_ent.takedamage)      // and that person is killable
  60         if (self.cursor_trace_ent.classname == "player") // and actually a player
  61         if (cvar("g_antilag") == 1)
  62         {
  63                 // verify that the shot would miss without antilag
  64                 // (avoids an issue where guns would always shoot at their origin)
  65                 traceline(w_shotorg, w_shotorg + w_shotdir * MAX_SHOT_DISTANCE, MOVE_NORMAL, self);
  66                 if (!trace_ent.takedamage)
  67                 {
  68                         // verify that the shot would hit if altered
  69                         traceline(w_shotorg, self.cursor_trace_ent.origin, MOVE_NORMAL, self);
  70                         if (trace_ent == self.cursor_trace_ent)
  71                         {
  72                                 // verify that the shot would hit in the past
  73                                 if(self.antilag_debug)
  74                                         antilag_takeback(self.cursor_trace_ent, time - self.antilag_debug);
  75                                 else
  76                                         antilag_takeback(self.cursor_trace_ent, time - self.ping * 0.001);
  77
  78                                 traceline(self.origin + self.view_ofs, self.origin + self.view_ofs + v_forward * MAX_SHOT_DISTANCE, MOVE_NORMAL, self);
  79                                 antilag_restore(self.cursor_trace_ent);
  80
  81                                 if(trace_ent == self.cursor_trace_ent)
  82                                 {
  83                                         // HIT!
  84                                         w_shotdir = normalize(self.cursor_trace_ent.origin - w_shotorg);
  85                                         dprint("ANTILAG HIT for ", self.netname, "\n");
  86                                 }
  87                                 else
  88                                 {
  89                                         // prydon cursor aimbot or odd network conditions
  90                                         dprint("WARNING: antilag ghost trace for ", self.netname, " failed!\n");
  91                                 }
  92
  93                                 if(cvar("developer") >= 2)
  94                                 {
  95                                         vector v, vplus, vel;
  96                                         float X;
  97                                         v     = antilag_takebackorigin(self.cursor_trace_ent, time - (self.ping * 0.001       ));
  98                                         vplus = antilag_takebackorigin(self.cursor_trace_ent, time - (self.ping * 0.001 + 0.01));
  99                                         vel = (vplus - v) * (1 / 0.01);
 100                                         // solve: v + X * vel = closest to self.origin + self.view_ofs, v_forward axis
 101                                         v     -= (self.origin + self.view_ofs);
 102                                         // solve: v + X * vel = closest to v_forward axis
 103                                         // project into 2D by subtracting v_forward components:
 104                                         v   -= (v   * v_forward) * v_forward;
 105                                         vel -= (vel * v_forward) * v_forward;
 106                                         // solve: v + X * vel = closest to origin
 107                                         // (v + X * vel)^2 closest to 0
 108                                         // v^2 + 2 * X * (v * vel) + X^2 * vel^2 closest to 0
 109                                         X = -(v * vel) / (vel * vel);
 110                                         dprint("dead center needs adjustment of ", ftos(X * 1000), " (that is, ", ftos(self.ping + X * 1000), " instead of ", ftos(self.ping), "\n");
 111                                 }
 112                         }
 113                 }
 114         }
 115
 116         self.solid = oldsolid; // restore solid type (generally SOLID_SLIDEBOX)
 117
 118         if (!g_norecoil)
 119                 self.punchangle_x = recoil * -1;
 120
 121         if (snd != "")
 122                 sound (self, CHAN_WEAPON, snd, VOL_BASE, ATTN_NORM);
 123
 124         if (self.items & IT_STRENGTH)
 125         if (!g_minstagib)
 126                 sound (self, CHAN_AUTO, "weapons/strength_fire.wav", VOL_BASE, ATTN_NORM);
 127 };
 128
 129 void LaserTarget_Think()
 130 {
 131         entity e;
 132         vector offset;
 133         float uselaser;
 134         uselaser = 0;
 135
 136         // list of weapons that will use the laser, and the options that enable it
 137         if(self.owner.laser_on && self.owner.weapon == WEP_ROCKET_LAUNCHER && g_laserguided_missile)
 138                 uselaser = 1;
 139         // example
 140         //if(self.owner.weapon == WEP_ELECTRO && cvar("g_laserguided_electro"))
 141         //      uselaser = 1;
 142
 143
 144
 145         // if a laser-enabled weapon isn't selected, delete any existing laser and quit
 146         if(!uselaser)
 147         {
 148                 // rocket launcher isn't selected, so no laser target.
 149                 if(self.lasertarget != world)
 150                 {
 151                         remove(self.lasertarget);
 152                         self.lasertarget = world;
 153                 }
 154                 return;
 155         }
 156
 157         if(!self.lasertarget)
 158         {
 159                 // we don't have a lasertarget entity, so spawn one
 160                 //bprint("create laser target\n");
 161                 e = self.lasertarget = spawn();
 162                 e.owner = self.owner;                   // Its owner is my owner
 163                 e.classname = "laser_target";
 164                 e.movetype = MOVETYPE_NOCLIP;   // don't touch things
 165                 setmodel(e, "models/laser_dot.mdl");    // what it looks like, precision set below
 166                 e.scale = 1.25;                         // make it larger
 167                 e.alpha = 0.25;                         // transparency
 168                 e.colormod = '255 0 0' * (1/255) * 8;   // change colors
 169                 e.effects = EF_FULLBRIGHT | EF_LOWPRECISION;
 170                 // make it dynamically glow
 171                 // you should avoid over-using this, as it can slow down the player's computer.
 172                 e.glow_color = 251; // red color
 173                 e.glow_size = 12;
 174         }
 175         else
 176                 e = self.lasertarget;
 177
 178         // move the laser dot to where the player is looking
 179
 180         makevectors(self.owner.v_angle); // set v_forward etc to the direction the player is looking
 181         offset = '0 0 26' + v_right*3;
 182         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
 183         setorigin(e, trace_endpos + v_forward*8); // move me to where the traceline ended
 184         if(trace_plane_normal != '0 0 0')
 185                 e.angles = vectoangles(trace_plane_normal);
 186         else
 187                 e.angles = vectoangles(v_forward);
 188 }
 189
 190 float CL_Weaponentity_CustomizeEntityForClient()
 191 {
 192         self.viewmodelforclient = self.owner;
 193         if(other.classname == "spectator")
 194                 if(other.enemy == self.owner)
 195                         self.viewmodelforclient = other;
 196         return TRUE;
 197 }
 198
 199 .string weaponname;
 200 void CL_Weaponentity_Think()
 201 {
 202         self.nextthink = time;
 203         if (intermission_running)
 204                 self.frame = WFRAME_IDLE;
 205         if (self.owner.weaponentity != self)
 206         {
 207                 remove(self);
 208                 return;
 209         }
 210         if (self.owner.deadflag != DEAD_NO)
 211         {
 212                 self.model = "";
 213                 return;
 214         }
 215         if (self.cnt != self.owner.weapon || self.dmg != self.owner.modelindex || self.deadflag != self.owner.deadflag)
 216         {
 217                 self.cnt = self.owner.weapon;
 218                 self.dmg = self.owner.modelindex;
 219                 self.deadflag = self.owner.deadflag;
 220                 if (self.owner.weaponname != "")
 221                         setmodel(self, strcat("models/weapons/w_", self.owner.weaponname, ".zym")); // precision set below
 222                 else
 223                         self.model = "";
 224         }
 225         self.effects = self.owner.effects | EF_LOWPRECISION;
 226         self.effects = self.effects - (self.effects & (EF_FULLBRIGHT)); // can mask team color, so get rid of it
 227
 228         if (self.flags & FL_FLY)
 229                 // owner is currently being teleported, so don't apply EF_NODRAW otherwise the viewmodel would "blink"
 230                 self.effects = self.effects - (self.effects & EF_NODRAW);
 231
 232         if(self.owner.alpha >= 0)
 233                 self.alpha = self.owner.alpha;
 234         else
 235                 self.alpha = 1;
 236         self.colormap = self.owner.colormap;
 237
 238         self.angles = '0 0 0';
 239         local float f;
 240         f = 0;
 241         if (self.state == WS_RAISE)
 242                 f = (self.owner.weapon_nextthink - time) / cvar("g_balance_weaponswitchdelay");
 243         else if (self.state == WS_DROP)
 244                 f = 1 - (self.owner.weapon_nextthink - time) / cvar("g_balance_weaponswitchdelay");
 245         else if (self.state == WS_CLEAR)
 246                 f = 1;
 247         self.angles_x = -90 * f * f;
 248
 249         // create or update the lasertarget entity
 250         LaserTarget_Think();
 251 };
 252
 253 void CL_ExteriorWeaponentity_Think()
 254 {
 255         float tag_found;
 256         self.nextthink = time;
 257         if (self.owner.exteriorweaponentity != self)
 258         {
 259                 remove(self);
 260                 return;
 261         }
 262         if (self.owner.deadflag != DEAD_NO)
 263         {
 264                 self.model = "";
 265                 return;
 266         }
 267         if (self.cnt != self.owner.weapon || self.dmg != self.owner.modelindex || self.deadflag != self.owner.deadflag)
 268         {
 269                 self.cnt = self.owner.weapon;
 270                 self.dmg = self.owner.modelindex;
 271                 self.deadflag = self.owner.deadflag;
 272                 if (self.owner.weaponname != "")
 273                         setmodel(self, strcat("models/weapons/v_", self.owner.weaponname, ".md3")); // precision set below
 274                 else
 275                         self.model = "";
 276
 277                 if((tag_found = gettagindex(self.owner, "tag_weapon")))
 278                 {
 279                         self.tag_index = tag_found;
 280                         self.tag_entity = self.owner;
 281                 }
 282                 else
 283                         setattachment(self, self.owner, "bip01 r hand");
 284
 285                 // if that didn't find a tag, hide the exterior weapon model
 286                 if (!self.tag_index)
 287                         self.model = "";
 288         }
 289         self.effects = self.owner.effects | EF_LOWPRECISION;
 290         self.effects = self.effects - (self.effects & (EF_BLUE | EF_RED)); // eat performance
 291         if(self.owner.alpha >= 0)
 292                 self.alpha = self.owner.alpha;
 293         else
 294                 self.alpha = 1;
 295         self.colormap = self.owner.colormap;
 296 };
 297
 298 // spawning weaponentity for client
 299 void CL_SpawnWeaponentity()
 300 {
 301         self.weaponentity = spawn();
 302         self.weaponentity.solid = SOLID_NOT;
 303         self.weaponentity.owner = self;
 304         self.weaponentity.weaponentity = self.weaponentity;
 305         setmodel(self.weaponentity, ""); // precision set when changed
 306         self.weaponentity.origin = '0 0 0';
 307         self.weaponentity.angles = '0 0 0';
 308         self.weaponentity.viewmodelforclient = self;
 309         self.weaponentity.flags = 0;
 310         self.weaponentity.think = CL_Weaponentity_Think;
 311         self.weaponentity.customizeentityforclient = CL_Weaponentity_CustomizeEntityForClient;
 312         self.weaponentity.nextthink = time;
 313         self.weaponentity.scale = 0.61;
 314
 315         self.exteriorweaponentity = spawn();
 316         self.exteriorweaponentity.solid = SOLID_NOT;
 317         self.exteriorweaponentity.exteriorweaponentity = self.exteriorweaponentity;
 318         self.exteriorweaponentity.owner = self;
 319         self.exteriorweaponentity.origin = '0 0 0';
 320         self.exteriorweaponentity.angles = '0 0 0';
 321         self.exteriorweaponentity.think = CL_ExteriorWeaponentity_Think;
 322         self.exteriorweaponentity.nextthink = time;
 323 };
 324
 325 float client_hasweapon(entity cl, float wpn, float andammo, float complain)
 326 {
 327         local float weaponbit, f;
 328         local entity oldself;
 329
 330         if (wpn < WEP_FIRST || wpn > WEP_LAST)
 331         {
 332                 if (complain)
 333                         sprint(self, "Invalid weapon\n");
 334                 return FALSE;
 335         }
 336         weaponbit = W_WeaponBit(wpn);
 337         if (cl.weapons & weaponbit)
 338         {
 339                 if (andammo)
 340                 {
 341                         oldself = self;
 342                         self = cl;
 343                         f = weapon_action(wpn, WR_CHECKAMMO1);
 344                         f = f + weapon_action(wpn, WR_CHECKAMMO2);
 345                         self = oldself;
 346                         if (!f)
 347                         {
 348                                 if (complain)
 349                                         sprint(cl, strcat("You don't have any ammo for the ^2", W_Name(wpn), "\n"));
 350                                 return FALSE;
 351                         }
 352                 }
 353                 return TRUE;
 354         }
 355         if (complain)
 356         {
 357                 // DRESK - 3/16/07
 358                 // Report Proper Weapon Status / Modified Weapon Ownership Message
 359                 if(weaponsInMap & weaponbit)
 360                         sprint(cl, strcat("You do not have the ^2", W_Name(wpn), "\n") );
 361                 else
 362                         sprint(cl, strcat("The ^2", W_Name(wpn), "^7 is ^1NOT AVAILABLE^7 in this map\n") );
 363         }
 364         return FALSE;
 365 };
 366
 367 // Weapon subs
 368 void w_clear()
 369 {
 370         if (self.weapon != -1)
 371                 self.weapon = 0;
 372         if (self.weaponentity)
 373         {
 374                 self.weaponentity.state = WS_CLEAR;
 375                 // self.weaponname = ""; // next frame will setmodel it to "" when needed anyway
 376                 self.weaponentity.effects = 0;
 377         }
 378 };
 379
 380 void w_ready()
 381 {
 382         if (self.weaponentity)
 383                 self.weaponentity.state = WS_READY;
 384         weapon_thinkf(WFRAME_IDLE, 1000000, w_ready);
 385 };
 386
 387 // Setup weapon for client (after this raise frame will be launched)
 388 void weapon_setup(float windex, string wname, float hudammo)
 389 {
 390         self.items = self.items - (self.items & (IT_SHELLS | IT_NAILS | IT_ROCKETS | IT_CELLS));
 391         self.items = self.items | hudammo;
 392
 393         // the two weapon entities will notice this has changed and update their models
 394         self.weapon = windex;
 395         self.weaponname = wname;
 396 };
 397
 398 // perform weapon to attack (weaponstate and attack_finished check is here)
 399 .float race_penalty;
 400 float weapon_prepareattack(float secondary, float attacktime)
 401 {
 402         //if sv_ready_restart_after_countdown is set, don't allow the player to shoot
 403         //if all players readied up and the countdown is running
 404         if (cvar("sv_ready_restart_after_countdown"))
 405                 if(time < restart_countdown || time < self.race_penalty) {
 406                         return FALSE;
 407                 }
 408
 409         if (!weapon_action(self.weapon, WR_CHECKAMMO1 + secondary))
 410         {
 411                 self.switchweapon = w_getbestweapon(self);
 412                 if (self.switchweapon != self.weapon)
 413                         self.cnt = self.weapon;
 414                 return FALSE;
 415         }
 416
 417         if (timeoutStatus == 2) //don't allow the player to shoot while game is paused
 418                 return FALSE;
 419
 420         // do not even think about shooting if switching
 421         if(self.switchweapon != self.weapon)
 422                 return FALSE;
 423
 424         // don't fire if previous attack is not finished
 425         if (ATTACK_FINISHED(self) > time + frametime * 0.5)
 426                 return FALSE;
 427         // don't fire while changing weapon
 428         if (self.weaponentity.state != WS_READY)
 429                 return FALSE;
 430         self.weaponentity.state = WS_INUSE;
 431         // if the weapon hasn't been firing continuously, reset the timer
 432         if (ATTACK_FINISHED(self) < time - frametime * 1.5)
 433         {
 434                 ATTACK_FINISHED(self) = time;
 435                 //dprint("resetting attack finished to ", ftos(time), "\n");
 436         }
 437         ATTACK_FINISHED(self) = ATTACK_FINISHED(self) + attacktime;
 438         //dprint("attack finished ", ftos(ATTACK_FINISHED(self)), "\n");
 439         return TRUE;
 440 };
 441
 442 void weapon_thinkf(float fr, float t, void() func)
 443 {
 444         if (fr >= 0)
 445         {
 446                 if (self.weaponentity != world)
 447                         self.weaponentity.frame = fr;
 448         }
 449
 450         if(self.weapon_think == w_ready && func != w_ready && self.weaponentity.state == WS_RAISE)
 451         {
 452                 backtrace("Tried to override initial weapon think function - should this really happen?");
 453         }
 454
 455         if(g_runematch)
 456         {
 457                 if(self.runes & RUNE_SPEED)
 458                 {
 459                         if(self.runes & CURSE_SLOW)
 460                                 t = t * cvar("g_balance_rune_speed_combo_atkrate");
 461                         else
 462                                 t = t * cvar("g_balance_rune_speed_atkrate");
 463                 }
 464                 else if(self.runes & CURSE_SLOW)
 465                 {
 466                         t = t * cvar("g_balance_curse_slow_atkrate");
 467                 }
 468         }
 469
 470         // VorteX: haste can be added here
 471         if (self.weapon_think == w_ready)
 472         {
 473                 self.weapon_nextthink = time;
 474                 //dprint("started firing at ", ftos(time), "\n");
 475         }
 476         if (self.weapon_nextthink < time - frametime * 1.5 || self.weapon_nextthink > time + frametime * 1.5)
 477         {
 478                 self.weapon_nextthink = time;
 479                 //dprint("reset weapon animation timer at ", ftos(time), "\n");
 480         }
 481         self.weapon_nextthink = self.weapon_nextthink + t;
 482         self.weapon_think = func;
 483         //dprint("next ", ftos(self.weapon_nextthink), "\n");
 484
 485         if (fr == WFRAME_FIRE1 || fr == WFRAME_FIRE2)
 486         if (t)
 487         if (!self.crouch) // shoot anim stands up, this looks bad
 488         {
 489                 local vector anim;
 490                 anim = self.anim_shoot;
 491                 anim_z = anim_y / t;
 492                 player_setanim(anim, FALSE, TRUE, TRUE);
 493         }
 494 };
 495
 496 void weapon_boblayer1(float spd, vector org)
 497 {
 498         // VorteX: haste can be added here
 499 };
 500
 501 vector W_CalculateProjectileVelocity(vector pvelocity, vector mvelocity)
 502 {
 503         vector mdirection;
 504         float mspeed;
 505         float outspeed;
 506         float nstyle;
 507         vector outvelocity;
 508
 509         mdirection = normalize(mvelocity);
 510         mspeed = vlen(mvelocity);
 511
 512         nstyle = cvar("g_projectiles_newton_style");
 513         if(nstyle == 0)
 514         {
 515                 // absolute velocity
 516                 outvelocity = mvelocity;
 517         }
 518         else if(nstyle == 1)
 519         {
 520                 // true Newtonian projectiles
 521                 outvelocity = pvelocity + mvelocity;
 522         }
 523         else if(nstyle == 2)
 524         {
 525                 // true Newtonian projectiles with automatic aim adjustment
 526                 //
 527                 // solve: |outspeed * mdirection - pvelocity| = mspeed
 528                 // outspeed^2 - 2 * outspeed * (mdirection * pvelocity) + pvelocity^2 - mspeed^2 = 0
 529                 // outspeed = (mdirection * pvelocity) +- sqrt((mdirection * pvelocity)^2 - pvelocity^2 + mspeed^2)
 530                 // PLUS SIGN!
 531                 // not defined?
 532                 // then...
 533                 // pvelocity^2 - (mdirection * pvelocity)^2 > mspeed^2
 534                 // velocity without mdirection component > mspeed
 535                 // fire at smallest possible mspeed that works?
 536                 // |(mdirection * pvelocity) * pvelocity - pvelocity| = mspeed
 537
 538                 float D;
 539                 float p;
 540                 float q;
 541                 p = mdirection * pvelocity;
 542                 q = pvelocity * pvelocity - mspeed * mspeed;
 543                 D = p * p - q;
 544                 if(D < 0)
 545                 {
 546                         //dprint("impossible shot, adjusting\n");
 547                         D = 0;
 548                 }
 549                 outspeed = p + sqrt(D);
 550                 outspeed = bound(mspeed * 0.7, outspeed, mspeed * 5.0);
 551                 outvelocity = mdirection * outspeed;
 552         }
 553         else if(nstyle == 3)
 554         {
 555                 // pseudo-Newtonian:
 556                 outspeed = mspeed + mdirection * pvelocity;
 557                 outspeed = bound(mspeed * 0.7, outspeed, mspeed * 5.0);
 558                 outvelocity = mdirection * outspeed;
 559         }
 560         else if(nstyle == 4)
 561         {
 562                 // tZorkian:
 563                 outspeed = mspeed + vlen(pvelocity);
 564                 outvelocity = mdirection * outspeed;
 565         }
 566         else
 567                 error("g_projectiles_newton_style must be 0 (absolute), 1 (Newtonian), 2 (Newtonian + aimfix), 3 (pseudo Newtonian) or 4 (tZorkian)!");
 568
 569         return outvelocity;
 570 }
 571
 572 void W_SetupProjectileVelocity(entity missile)
 573 {
 574         if(missile.owner == world)
 575                 error("Unowned missile");
 576
 577         missile.velocity = W_CalculateProjectileVelocity(missile.owner.velocity, missile.velocity);
 578 }