qcsrc/server/bot/aim.qc

   1 #include "aim.qh"
   2
   3 #include "bot.qh"
   4
   5 #include <common/physics/player.qh>
   6 #include <common/state.qh>
   7
   8 #include "../weapons/weaponsystem.qh"
   9
  10 #include "../mutators/all.qh"
  11
  12 // traces multiple trajectories to find one that will impact the target
  13 // 'end' vector is the place it aims for,
  14 // returns true only if it hit targ (don't target non-solid entities)
  15
  16 float findtrajectorywithleading(vector org, vector m1, vector m2, entity targ, float shotspeed, float shotspeedupward, float maxtime, float shotdelay, entity ignore)
  17 {
  18         float c, savesolid, shottime;
  19         vector dir, end, v, o;
  20         if (shotspeed < 1)
  21                 return false; // could cause division by zero if calculated
  22         if (targ.solid < SOLID_BBOX) // SOLID_NOT and SOLID_TRIGGER
  23                 return false; // could never hit it
  24         if (!tracetossent)
  25                 tracetossent = new(tracetossent);
  26         tracetossent.owner = ignore;
  27         setsize(tracetossent, m1, m2);
  28         savesolid = targ.solid;
  29         targ.solid = SOLID_NOT;
  30         o = (targ.absmin + targ.absmax) * 0.5;
  31         shottime = ((vlen(o - org) / shotspeed) + shotdelay);
  32         v = targ.velocity * shottime + o;
  33         tracebox(o, targ.mins, targ.maxs, v, false, targ);
  34         v = trace_endpos;
  35         end = v + (targ.mins + targ.maxs) * 0.5;
  36         if ((vlen(end - org) / shotspeed + 0.2) > maxtime)
  37         {
  38                 // out of range
  39                 targ.solid = savesolid;
  40                 return false;
  41         }
  42
  43         if (!tracetossfaketarget)
  44                 tracetossfaketarget = new(tracetossfaketarget);
  45         tracetossfaketarget.solid = savesolid;
  46         tracetossfaketarget.movetype = targ.movetype;
  47         _setmodel(tracetossfaketarget, targ.model); // no low precision
  48         tracetossfaketarget.model = targ.model;
  49         tracetossfaketarget.modelindex = targ.modelindex;
  50         setsize(tracetossfaketarget, targ.mins, targ.maxs);
  51         setorigin(tracetossfaketarget, v);
  52
  53         c = 0;
  54         dir = normalize(end - org);
  55         while (c < 10) // 10 traces
  56         {
  57                 setorigin(tracetossent, org); // reset
  58                 tracetossent.velocity = findtrajectory_velocity = normalize(dir) * shotspeed + shotspeedupward * '0 0 1';
  59                 tracetoss(tracetossent, ignore); // love builtin functions...
  60                 if (trace_ent == tracetossfaketarget) // done
  61                 {
  62                         targ.solid = savesolid;
  63
  64                         // make it disappear
  65                         tracetossfaketarget.solid = SOLID_NOT;
  66                         tracetossfaketarget.movetype = MOVETYPE_NONE;
  67                         tracetossfaketarget.model = "";
  68                         tracetossfaketarget.modelindex = 0;
  69                         // relink to remove it from physics considerations
  70                         setorigin(tracetossfaketarget, v);
  71
  72                         return true;
  73                 }
  74                 dir.z = dir.z + 0.1; // aim up a little more
  75                 c = c + 1;
  76         }
  77         targ.solid = savesolid;
  78
  79         // make it disappear
  80         tracetossfaketarget.solid = SOLID_NOT;
  81         tracetossfaketarget.movetype = MOVETYPE_NONE;
  82         tracetossfaketarget.model = "";
  83         tracetossfaketarget.modelindex = 0;
  84         // relink to remove it from physics considerations
  85         setorigin(tracetossfaketarget, v);
  86
  87         // leave a valid one even if it won't reach
  88         findtrajectory_velocity = normalize(end - org) * shotspeed + shotspeedupward * '0 0 1';
  89         return false;
  90 }
  91
  92 void lag_update(entity this)
  93 {
  94         if (this.lag1_time) if (time > this.lag1_time) {this.lag_func(this, this.lag1_time, this.lag1_float1, this.lag1_float2, this.lag1_entity1, this.lag1_vec1, this.lag1_vec2, this.lag1_vec3, this.lag1_vec4);this.lag1_time = 0;}
  95         if (this.lag2_time) if (time > this.lag2_time) {this.lag_func(this, this.lag2_time, this.lag2_float1, this.lag2_float2, this.lag2_entity1, this.lag2_vec1, this.lag2_vec2, this.lag2_vec3, this.lag2_vec4);this.lag2_time = 0;}
  96         if (this.lag3_time) if (time > this.lag3_time) {this.lag_func(this, this.lag3_time, this.lag3_float1, this.lag3_float2, this.lag3_entity1, this.lag3_vec1, this.lag3_vec2, this.lag3_vec3, this.lag3_vec4);this.lag3_time = 0;}
  97         if (this.lag4_time) if (time > this.lag4_time) {this.lag_func(this, this.lag4_time, this.lag4_float1, this.lag4_float2, this.lag4_entity1, this.lag4_vec1, this.lag4_vec2, this.lag4_vec3, this.lag4_vec4);this.lag4_time = 0;}
  98         if (this.lag5_time) if (time > this.lag5_time) {this.lag_func(this, this.lag5_time, this.lag5_float1, this.lag5_float2, this.lag5_entity1, this.lag5_vec1, this.lag5_vec2, this.lag5_vec3, this.lag5_vec4);this.lag5_time = 0;}
  99 }
 100
 101 float lag_additem(entity this, float t, float f1, float f2, entity e1, vector v1, vector v2, vector v3, vector v4)
 102 {
 103         if (this.lag1_time == 0) {this.lag1_time = t;this.lag1_float1 = f1;this.lag1_float2 = f2;this.lag1_entity1 = e1;this.lag1_vec1 = v1;this.lag1_vec2 = v2;this.lag1_vec3 = v3;this.lag1_vec4 = v4;return true;}
 104         if (this.lag2_time == 0) {this.lag2_time = t;this.lag2_float1 = f1;this.lag2_float2 = f2;this.lag2_entity1 = e1;this.lag2_vec1 = v1;this.lag2_vec2 = v2;this.lag2_vec3 = v3;this.lag2_vec4 = v4;return true;}
 105         if (this.lag3_time == 0) {this.lag3_time = t;this.lag3_float1 = f1;this.lag3_float2 = f2;this.lag3_entity1 = e1;this.lag3_vec1 = v1;this.lag3_vec2 = v2;this.lag3_vec3 = v3;this.lag3_vec4 = v4;return true;}
 106         if (this.lag4_time == 0) {this.lag4_time = t;this.lag4_float1 = f1;this.lag4_float2 = f2;this.lag4_entity1 = e1;this.lag4_vec1 = v1;this.lag4_vec2 = v2;this.lag4_vec3 = v3;this.lag4_vec4 = v4;return true;}
 107         if (this.lag5_time == 0) {this.lag5_time = t;this.lag5_float1 = f1;this.lag5_float2 = f2;this.lag5_entity1 = e1;this.lag5_vec1 = v1;this.lag5_vec2 = v2;this.lag5_vec3 = v3;this.lag5_vec4 = v4;return true;}
 108         // no room for it (what is the best thing to do here??)
 109         return false;
 110 }
 111
 112 bool bot_shouldattack(entity this, entity targ)
 113 {
 114         if (targ.team == this.team)
 115         {
 116                 if (targ == this)
 117                         return false;
 118                 if (teamplay)
 119                 if (targ.team != 0)
 120                         return false;
 121         }
 122
 123         if(STAT(FROZEN, targ))
 124                 return false;
 125
 126         if(teamplay)
 127         {
 128                 if(targ.team==0)
 129                         return false;
 130         }
 131         else if(bot_ignore_bots)
 132                 if(IS_BOT_CLIENT(targ))
 133                         return false;
 134
 135         if (!targ.takedamage)
 136                 return false;
 137         if (IS_DEAD(targ))
 138                 return false;
 139         if (PHYS_INPUT_BUTTON_CHAT(targ))
 140                 return false;
 141         if(targ.flags & FL_NOTARGET)
 142                 return false;
 143
 144         if(MUTATOR_CALLHOOK(BotShouldAttack, this, targ))
 145                 return false;
 146
 147         return true;
 148 }
 149
 150 void bot_lagfunc(entity this, float t, float f1, float f2, entity e1, vector v1, vector v2, vector v3, vector v4)
 151 {
 152         if(this.flags & FL_INWATER)
 153         {
 154                 this.bot_aimtarg = NULL;
 155                 return;
 156         }
 157         this.bot_aimtarg = e1;
 158         this.bot_aimlatency = this.ping; // FIXME?  Shouldn't this be in the lag item?
 159         //this.bot_aimorigin = v1;
 160         //this.bot_aimvelocity = v2;
 161         this.bot_aimtargorigin = v3;
 162         this.bot_aimtargvelocity = v4;
 163         if(skill <= 0)
 164                 this.bot_canfire = (random() < 0.8);
 165         else if(skill <= 1)
 166                 this.bot_canfire = (random() < 0.9);
 167         else if(skill <= 2)
 168                 this.bot_canfire = (random() < 0.95);
 169         else
 170                 this.bot_canfire = 1;
 171 }
 172
 173 float bot_aimdir(entity this, vector v, float maxfiredeviation)
 174 {
 175         float dist, delta_t, blend;
 176         vector desiredang, diffang;
 177
 178         //dprint("aim ", this.netname, ": old:", vtos(this.v_angle));
 179         // make sure v_angle is sane first
 180         this.v_angle_y = this.v_angle.y - floor(this.v_angle.y / 360) * 360;
 181         this.v_angle_z = 0;
 182
 183         // get the desired angles to aim at
 184         //dprint(" at:", vtos(v));
 185         v = normalize(v);
 186         //te_lightning2(NULL, this.origin + this.view_ofs, this.origin + this.view_ofs + v * 200);
 187         if (time >= this.bot_badaimtime)
 188         {
 189                 this.bot_badaimtime = max(this.bot_badaimtime + 0.3, time);
 190                 this.bot_badaimoffset = randomvec() * bound(0, 5 - 0.5 * (skill+this.bot_offsetskill), 5) * autocvar_bot_ai_aimskill_offset;
 191         }
 192         desiredang = vectoangles(v) + this.bot_badaimoffset;
 193         //dprint(" desired:", vtos(desiredang));
 194         if (desiredang.x >= 180)
 195                 desiredang.x = desiredang.x - 360;
 196         desiredang.x = bound(-90, 0 - desiredang.x, 90);
 197         desiredang.z = this.v_angle.z;
 198         //dprint(" / ", vtos(desiredang));
 199
 200         //// pain throws off aim
 201         //if (this.bot_painintensity)
 202         //{
 203         //      // shake from pain
 204         //      desiredang = desiredang + randomvec() * this.bot_painintensity * 0.2;
 205         //}
 206
 207         // calculate turn angles
 208         diffang = (desiredang - this.bot_olddesiredang);
 209         // wrap yaw turn
 210         diffang.y = diffang.y - floor(diffang.y / 360) * 360;
 211         if (diffang.y >= 180)
 212                 diffang.y = diffang.y - 360;
 213         this.bot_olddesiredang = desiredang;
 214         //dprint(" diff:", vtos(diffang));
 215
 216         delta_t = time-this.bot_prevaimtime;
 217         this.bot_prevaimtime = time;
 218         // Here we will try to anticipate the comming aiming direction
 219         this.bot_1st_order_aimfilter= this.bot_1st_order_aimfilter
 220                 + (diffang * (1 / delta_t)    - this.bot_1st_order_aimfilter) * bound(0, autocvar_bot_ai_aimskill_order_filter_1st,1);
 221         this.bot_2nd_order_aimfilter= this.bot_2nd_order_aimfilter
 222                 + (this.bot_1st_order_aimfilter - this.bot_2nd_order_aimfilter) * bound(0, autocvar_bot_ai_aimskill_order_filter_2nd,1);
 223         this.bot_3th_order_aimfilter= this.bot_3th_order_aimfilter
 224                 + (this.bot_2nd_order_aimfilter - this.bot_3th_order_aimfilter) * bound(0, autocvar_bot_ai_aimskill_order_filter_3th,1);
 225         this.bot_4th_order_aimfilter= this.bot_4th_order_aimfilter
 226                 + (this.bot_3th_order_aimfilter - this.bot_4th_order_aimfilter) * bound(0, autocvar_bot_ai_aimskill_order_filter_4th,1);
 227         this.bot_5th_order_aimfilter= this.bot_5th_order_aimfilter
 228                 + (this.bot_4th_order_aimfilter - this.bot_5th_order_aimfilter) * bound(0, autocvar_bot_ai_aimskill_order_filter_5th,1);
 229
 230         //blend = (bound(0,skill,10)*0.1)*pow(1-bound(0,skill,10)*0.05,2.5)*5.656854249; //Plot formule before changing !
 231         blend = bound(0,skill+this.bot_aimskill,10)*0.1;
 232         desiredang = desiredang + blend *
 233         (
 234                   this.bot_1st_order_aimfilter * autocvar_bot_ai_aimskill_order_mix_1st
 235                 + this.bot_2nd_order_aimfilter * autocvar_bot_ai_aimskill_order_mix_2nd
 236                 + this.bot_3th_order_aimfilter * autocvar_bot_ai_aimskill_order_mix_3th
 237                 + this.bot_4th_order_aimfilter * autocvar_bot_ai_aimskill_order_mix_4th
 238                 + this.bot_5th_order_aimfilter * autocvar_bot_ai_aimskill_order_mix_5th
 239         );
 240
 241         // calculate turn angles
 242         diffang = desiredang - this.bot_mouseaim;
 243         // wrap yaw turn
 244         diffang.y = diffang.y - floor(diffang.y / 360) * 360;
 245         if (diffang.y >= 180)
 246                 diffang.y = diffang.y - 360;
 247         //dprint(" diff:", vtos(diffang));
 248
 249         if (time >= this.bot_aimthinktime)
 250         {
 251                 this.bot_aimthinktime = max(this.bot_aimthinktime + 0.5 - 0.05*(skill+this.bot_thinkskill), time);
 252                 this.bot_mouseaim = this.bot_mouseaim + diffang * (1-random()*0.1*bound(1,10-(skill+this.bot_thinkskill),10));
 253         }
 254
 255         //this.v_angle = this.v_angle + diffang * bound(0, r * frametime * (skill * 0.5 + 2), 1);
 256
 257         diffang = this.bot_mouseaim - desiredang;
 258         // wrap yaw turn
 259         diffang.y = diffang.y - floor(diffang.y / 360) * 360;
 260         if (diffang.y >= 180)
 261                 diffang.y = diffang.y - 360;
 262         desiredang = desiredang + diffang * bound(0,autocvar_bot_ai_aimskill_think,1);
 263
 264         // calculate turn angles
 265         diffang = desiredang - this.v_angle;
 266         // wrap yaw turn
 267         diffang.y = diffang.y - floor(diffang.y / 360) * 360;
 268         if (diffang.y >= 180)
 269                 diffang.y = diffang.y - 360;
 270         //dprint(" diff:", vtos(diffang));
 271
 272         // jitter tracking
 273         dist = vlen(diffang);
 274         //diffang = diffang + randomvec() * (dist * 0.05 * (3.5 - bound(0, skill, 3)));
 275
 276         // turn
 277         float r, fixedrate, blendrate;
 278         fixedrate = autocvar_bot_ai_aimskill_fixedrate / bound(1,dist,1000);
 279         blendrate = autocvar_bot_ai_aimskill_blendrate;
 280         r = max(fixedrate, blendrate);
 281         //this.v_angle = this.v_angle + diffang * bound(frametime, r * frametime * (2+skill*skill*0.05-random()*0.05*(10-skill)), 1);
 282         this.v_angle = this.v_angle + diffang * bound(delta_t, r * delta_t * (2+pow(skill+this.bot_mouseskill,3)*0.005-random()), 1);
 283         this.v_angle = this.v_angle * bound(0,autocvar_bot_ai_aimskill_mouse,1) + desiredang * bound(0,(1-autocvar_bot_ai_aimskill_mouse),1);
 284         //this.v_angle = this.v_angle + diffang * bound(0, r * frametime * (skill * 0.5 + 2), 1);
 285         //this.v_angle = this.v_angle + diffang * (1/ blendrate);
 286         this.v_angle_z = 0;
 287         this.v_angle_y = this.v_angle.y - floor(this.v_angle.y / 360) * 360;
 288         //dprint(" turn:", vtos(this.v_angle));
 289
 290         makevectors(this.v_angle);
 291         shotorg = this.origin + this.view_ofs;
 292         shotdir = v_forward;
 293
 294         //dprint(" dir:", vtos(v_forward));
 295         //te_lightning2(NULL, shotorg, shotorg + shotdir * 100);
 296
 297         // calculate turn angles again
 298         //diffang = desiredang - this.v_angle;
 299         //diffang_y = diffang_y - floor(diffang_y / 360) * 360;
 300         //if (diffang_y >= 180)
 301         //      diffang_y = diffang_y - 360;
 302
 303         //dprint("e ", vtos(diffang), " < ", ftos(maxfiredeviation), "\n");
 304
 305         // decide whether to fire this time
 306         // note the maxfiredeviation is in degrees so this has to convert to radians first
 307         //if ((normalize(v) * shotdir) >= cos(maxfiredeviation * (3.14159265358979323846 / 180)))
 308         if ((normalize(v) * shotdir) >= cos(maxfiredeviation * (3.14159265358979323846 / 180)))
 309         if(vdist(trace_endpos-shotorg, <, 500 + 500 * bound(0, skill + this.bot_aggresskill, 10)) || random()*random()>bound(0,(skill+this.bot_aggresskill)*0.05,1))
 310                 this.bot_firetimer = time + bound(0.1, 0.5-(skill+this.bot_aggresskill)*0.05, 0.5);
 311         //traceline(shotorg,shotorg+shotdir*1000,false,NULL);
 312         //dprint(ftos(maxfiredeviation),"\n");
 313         //dprint(" diff:", vtos(diffang), "\n");
 314
 315         return this.bot_canfire && (time < this.bot_firetimer);
 316 }
 317
 318 vector bot_shotlead(vector targorigin, vector targvelocity, float shotspeed, float shotdelay)
 319 {
 320         // Try to add code here that predicts gravity effect here, no clue HOW to though ... well not yet atleast...
 321         return targorigin + targvelocity * (shotdelay + vlen(targorigin - shotorg) / shotspeed);
 322 }
 323
 324 bool bot_aim(entity this, float shotspeed, float shotspeedupward, float maxshottime, bool applygravity)
 325 {
 326         float f, r, hf, distanceratio;
 327         vector v;
 328         /*
 329         eprint(this);
 330         dprint("bot_aim(", ftos(shotspeed));
 331         dprint(", ", ftos(shotspeedupward));
 332         dprint(", ", ftos(maxshottime));
 333         dprint(", ", ftos(applygravity));
 334         dprint(");\n");
 335         */
 336
 337         hf = this.dphitcontentsmask;
 338         this.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_CORPSE;
 339
 340         shotspeed *= W_WeaponSpeedFactor(this);
 341         shotspeedupward *= W_WeaponSpeedFactor(this);
 342         if (!shotspeed)
 343         {
 344                 LOG_TRACE("bot_aim: WARNING: weapon ", PS(this).m_weapon.m_name, " shotspeed is zero!\n");
 345                 shotspeed = 1000000;
 346         }
 347         if (!maxshottime)
 348         {
 349                 LOG_TRACE("bot_aim: WARNING: weapon ", PS(this).m_weapon.m_name, " maxshottime is zero!\n");
 350                 maxshottime = 1;
 351         }
 352         makevectors(this.v_angle);
 353         shotorg = this.origin + this.view_ofs;
 354         shotdir = v_forward;
 355         v = bot_shotlead(this.bot_aimtargorigin, this.bot_aimtargvelocity, shotspeed, this.bot_aimlatency);
 356         distanceratio = sqrt(bound(0,skill,10000))*0.3*(vlen(v-shotorg)-100)/autocvar_bot_ai_aimskill_firetolerance_distdegrees;
 357         distanceratio = bound(0,distanceratio,1);
 358         r =  (autocvar_bot_ai_aimskill_firetolerance_maxdegrees-autocvar_bot_ai_aimskill_firetolerance_mindegrees)
 359                 * (1-distanceratio) + autocvar_bot_ai_aimskill_firetolerance_mindegrees;
 360         if (applygravity && this.bot_aimtarg)
 361         {
 362                 if (!findtrajectorywithleading(shotorg, '0 0 0', '0 0 0', this.bot_aimtarg, shotspeed, shotspeedupward, maxshottime, 0, this))
 363                 {
 364                         this.dphitcontentsmask = hf;
 365                         return false;
 366                 }
 367
 368                 f = bot_aimdir(this, findtrajectory_velocity - shotspeedupward * '0 0 1', r);
 369         }
 370         else
 371         {
 372                 f = bot_aimdir(this, v - shotorg, r);
 373                 //dprint("AIM: ");dprint(vtos(this.bot_aimtargorigin));dprint(" + ");dprint(vtos(this.bot_aimtargvelocity));dprint(" * ");dprint(ftos(this.bot_aimlatency + vlen(this.bot_aimtargorigin - shotorg) / shotspeed));dprint(" = ");dprint(vtos(v));dprint(" : aimdir = ");dprint(vtos(normalize(v - shotorg)));dprint(" : ");dprint(vtos(shotdir));dprint("\n");
 374                 //traceline(shotorg, shotorg + shotdir * 10000, false, this);
 375                 //if (trace_ent.takedamage)
 376                 //if (trace_fraction < 1)
 377                 //if (!bot_shouldattack(this, trace_ent))
 378                 //      return false;
 379                 traceline(shotorg, this.bot_aimtargorigin, false, this);
 380                 if (trace_fraction < 1)
 381                 if (trace_ent != this.enemy)
 382                 if (!bot_shouldattack(this, trace_ent))
 383                 {
 384                         this.dphitcontentsmask = hf;
 385                         return false;
 386                 }
 387         }
 388
 389         //if (r > maxshottime * shotspeed)
 390         //      return false;
 391         this.dphitcontentsmask = hf;
 392         return true;
 393 }