qcsrc/server/bot/aim.qc

   1
   2 // traces multiple trajectories to find one that will impact the target
   3 // 'end' vector is the place it aims for,
   4 // returns TRUE only if it hit targ (don't target non-solid entities)
   5
   6 float findtrajectorywithleading(vector org, vector m1, vector m2, entity targ, float shotspeed, float shotspeedupward, float maxtime, float shotdelay, entity ignore)
   7 {
   8         local float c, savesolid, shottime;
   9         local vector dir, end, v;
  10         if (shotspeed < 1)
  11                 return FALSE; // could cause division by zero if calculated
  12         if (targ.solid < SOLID_BBOX) // SOLID_NOT and SOLID_TRIGGER
  13                 return FALSE; // could never hit it
  14         if (!tracetossent)
  15                 tracetossent = spawn();
  16         tracetossent.owner = ignore;
  17         setsize(tracetossent, m1, m2);
  18         savesolid = targ.solid;
  19         targ.solid = SOLID_NOT;
  20         shottime = ((vlen(targ.origin - org) / shotspeed) + shotdelay);
  21         v = targ.velocity * shottime + targ.origin;
  22         tracebox(targ.origin, targ.mins, targ.maxs, v, FALSE, targ);
  23         v = trace_endpos;
  24         end = v + (targ.mins + targ.maxs) * 0.5;
  25         if ((vlen(end - org) / shotspeed + 0.2) > maxtime)
  26         {
  27                 // out of range
  28                 targ.solid = savesolid;
  29                 return FALSE;
  30         }
  31
  32         if (!tracetossfaketarget)
  33                 tracetossfaketarget = spawn();
  34         tracetossfaketarget.solid = savesolid;
  35         tracetossfaketarget.movetype = targ.movetype;
  36         setmodel(tracetossfaketarget, targ.model); // no low precision
  37         tracetossfaketarget.model = targ.model;
  38         tracetossfaketarget.modelindex = targ.modelindex;
  39         setsize(tracetossfaketarget, targ.mins, targ.maxs);
  40         setorigin(tracetossfaketarget, v);
  41
  42         c = 0;
  43         dir = normalize(end - org);
  44         while (c < 10) // 10 traces
  45         {
  46                 setorigin(tracetossent, org); // reset
  47                 tracetossent.velocity = findtrajectory_velocity = normalize(dir) * shotspeed + shotspeedupward * '0 0 1';
  48                 tracetoss(tracetossent, ignore); // love builtin functions...
  49                 if (trace_ent == tracetossfaketarget) // done
  50                 {
  51                         targ.solid = savesolid;
  52
  53                         // make it disappear
  54                         tracetossfaketarget.solid = SOLID_NOT;
  55                         tracetossfaketarget.movetype = MOVETYPE_NONE;
  56                         tracetossfaketarget.model = "";
  57                         tracetossfaketarget.modelindex = 0;
  58                         // relink to remove it from physics considerations
  59                         setorigin(tracetossfaketarget, v);
  60
  61                         return TRUE;
  62                 }
  63                 dir_z = dir_z + 0.1; // aim up a little more
  64                 c = c + 1;
  65         }
  66         targ.solid = savesolid;
  67
  68         // make it disappear
  69         tracetossfaketarget.solid = SOLID_NOT;
  70         tracetossfaketarget.movetype = MOVETYPE_NONE;
  71         tracetossfaketarget.model = "";
  72         tracetossfaketarget.modelindex = 0;
  73         // relink to remove it from physics considerations
  74         setorigin(tracetossfaketarget, v);
  75
  76         // leave a valid one even if it won't reach
  77         findtrajectory_velocity = normalize(end - org) * shotspeed + shotspeedupward * '0 0 1';
  78         return FALSE;
  79 };
  80
  81 void lag_update()
  82 {
  83         if (self.lag1_time) if (time > self.lag1_time) {self.lag_func(self.lag1_time, self.lag1_float1, self.lag1_float2, self.lag1_entity1, self.lag1_vec1, self.lag1_vec2, self.lag1_vec3, self.lag1_vec4);self.lag1_time = 0;}
  84         if (self.lag2_time) if (time > self.lag2_time) {self.lag_func(self.lag2_time, self.lag2_float1, self.lag2_float2, self.lag2_entity1, self.lag2_vec1, self.lag2_vec2, self.lag2_vec3, self.lag2_vec4);self.lag2_time = 0;}
  85         if (self.lag3_time) if (time > self.lag3_time) {self.lag_func(self.lag3_time, self.lag3_float1, self.lag3_float2, self.lag3_entity1, self.lag3_vec1, self.lag3_vec2, self.lag3_vec3, self.lag3_vec4);self.lag3_time = 0;}
  86         if (self.lag4_time) if (time > self.lag4_time) {self.lag_func(self.lag4_time, self.lag4_float1, self.lag4_float2, self.lag4_entity1, self.lag4_vec1, self.lag4_vec2, self.lag4_vec3, self.lag4_vec4);self.lag4_time = 0;}
  87         if (self.lag5_time) if (time > self.lag5_time) {self.lag_func(self.lag5_time, self.lag5_float1, self.lag5_float2, self.lag5_entity1, self.lag5_vec1, self.lag5_vec2, self.lag5_vec3, self.lag5_vec4);self.lag5_time = 0;}
  88 };
  89
  90 float lag_additem(float t, float f1, float f2, entity e1, vector v1, vector v2, vector v3, vector v4)
  91 {
  92         if (self.lag1_time == 0) {self.lag1_time = t;self.lag1_float1 = f1;self.lag1_float2 = f2;self.lag1_entity1 = e1;self.lag1_vec1 = v1;self.lag1_vec2 = v2;self.lag1_vec3 = v3;self.lag1_vec4 = v4;return TRUE;}
  93         if (self.lag2_time == 0) {self.lag2_time = t;self.lag2_float1 = f1;self.lag2_float2 = f2;self.lag2_entity1 = e1;self.lag2_vec1 = v1;self.lag2_vec2 = v2;self.lag2_vec3 = v3;self.lag2_vec4 = v4;return TRUE;}
  94         if (self.lag3_time == 0) {self.lag3_time = t;self.lag3_float1 = f1;self.lag3_float2 = f2;self.lag3_entity1 = e1;self.lag3_vec1 = v1;self.lag3_vec2 = v2;self.lag3_vec3 = v3;self.lag3_vec4 = v4;return TRUE;}
  95         if (self.lag4_time == 0) {self.lag4_time = t;self.lag4_float1 = f1;self.lag4_float2 = f2;self.lag4_entity1 = e1;self.lag4_vec1 = v1;self.lag4_vec2 = v2;self.lag4_vec3 = v3;self.lag4_vec4 = v4;return TRUE;}
  96         if (self.lag5_time == 0) {self.lag5_time = t;self.lag5_float1 = f1;self.lag5_float2 = f2;self.lag5_entity1 = e1;self.lag5_vec1 = v1;self.lag5_vec2 = v2;self.lag5_vec3 = v3;self.lag5_vec4 = v4;return TRUE;}
  97         // no room for it (what is the best thing to do here??)
  98         return FALSE;
  99 };
 100
 101 float bot_shouldattack(entity e)
 102 {
 103         if (e.team == self.team)
 104         {
 105                 if (e == self)
 106                         return FALSE;
 107                 if (teams_matter)
 108                 if (e.team != 0)
 109                         return FALSE;
 110         }
 111
 112         if(g_freezetag)
 113                 if(e.freezetag_frozen)
 114                         return FALSE;
 115
 116         if(teams_matter)
 117         {
 118                 if(e.team==0)
 119                         return FALSE;
 120         }
 121         else if(bot_ignore_bots)
 122                 if(clienttype(e) == CLIENTTYPE_BOT)
 123                         return FALSE;
 124
 125         if (!e.takedamage)
 126                 return FALSE;
 127         if (e.deadflag)
 128                 return FALSE;
 129         if (e.BUTTON_CHAT)
 130                 return FALSE;
 131         if(g_minstagib)
 132         if(e.items & IT_STRENGTH)
 133                 return FALSE;
 134         if(e.flags & FL_NOTARGET)
 135                 return FALSE;
 136         return TRUE;
 137 };
 138
 139 void bot_lagfunc(float t, float f1, float f2, entity e1, vector v1, vector v2, vector v3, vector v4)
 140 {
 141         if(self.flags & FL_INWATER)
 142         {
 143                 self.bot_aimtarg = world;
 144                 return;
 145         }
 146         self.bot_aimtarg = e1;
 147         self.bot_aimlatency = self.ping; // FIXME?  Shouldn't this be in the lag item?
 148         self.bot_aimselforigin = v1;
 149         self.bot_aimselfvelocity = v2;
 150         self.bot_aimtargorigin = v3;
 151         self.bot_aimtargvelocity = v4;
 152         if(skill <= 0)
 153                 self.bot_canfire = (random() < 0.8);
 154         else if(skill <= 1)
 155                 self.bot_canfire = (random() < 0.9);
 156         else if(skill <= 2)
 157                 self.bot_canfire = (random() < 0.95);
 158         else
 159                 self.bot_canfire = 1;
 160 };
 161
 162 float bot_aimdir(vector v, float maxfiredeviation)
 163 {
 164         local float dist, delta_t, blend;
 165         local vector desiredang, diffang;
 166
 167         //dprint("aim ", self.netname, ": old:", vtos(self.v_angle));
 168         // make sure v_angle is sane first
 169         self.v_angle_y = self.v_angle_y - floor(self.v_angle_y / 360) * 360;
 170         self.v_angle_z = 0;
 171
 172         // get the desired angles to aim at
 173         //dprint(" at:", vtos(v));
 174         v = normalize(v);
 175         //te_lightning2(world, self.origin + self.view_ofs, self.origin + self.view_ofs + v * 200);
 176         if (time >= self.bot_badaimtime)
 177         {
 178                 self.bot_badaimtime = max(self.bot_badaimtime + 0.3, time);
 179                 self.bot_badaimoffset = randomvec() * bound(0, 5 - 0.5 * (skill+self.bot_offsetskill), 5) * cvar("bot_ai_aimskill_offset");
 180         }
 181         desiredang = vectoangles(v) + self.bot_badaimoffset;
 182         //dprint(" desired:", vtos(desiredang));
 183         if (desiredang_x >= 180)
 184                 desiredang_x = desiredang_x - 360;
 185         desiredang_x = bound(-90, 0 - desiredang_x, 90);
 186         desiredang_z = self.v_angle_z;
 187         //dprint(" / ", vtos(desiredang));
 188
 189         //// pain throws off aim
 190         //if (self.bot_painintensity)
 191         //{
 192         //      // shake from pain
 193         //      desiredang = desiredang + randomvec() * self.bot_painintensity * 0.2;
 194         //}
 195
 196         // calculate turn angles
 197         diffang = (desiredang - self.bot_olddesiredang);
 198         // wrap yaw turn
 199         diffang_y = diffang_y - floor(diffang_y / 360) * 360;
 200         if (diffang_y >= 180)
 201                 diffang_y = diffang_y - 360;
 202         self.bot_olddesiredang = desiredang;
 203         //dprint(" diff:", vtos(diffang));
 204
 205         delta_t = time-self.bot_prevaimtime;
 206         self.bot_prevaimtime = time;
 207         // Here we will try to anticipate the comming aiming direction
 208         self.bot_1st_order_aimfilter= self.bot_1st_order_aimfilter
 209                 + (diffang * (1 / delta_t)    - self.bot_1st_order_aimfilter) * bound(0, cvar("bot_ai_aimskill_order_filter_1st"),1);
 210         self.bot_2nd_order_aimfilter= self.bot_2nd_order_aimfilter
 211                 + (self.bot_1st_order_aimfilter - self.bot_2nd_order_aimfilter) * bound(0, cvar("bot_ai_aimskill_order_filter_2nd"),1);
 212         self.bot_3th_order_aimfilter= self.bot_3th_order_aimfilter
 213                 + (self.bot_2nd_order_aimfilter - self.bot_3th_order_aimfilter) * bound(0, cvar("bot_ai_aimskill_order_filter_3th"),1);
 214         self.bot_4th_order_aimfilter= self.bot_4th_order_aimfilter
 215                 + (self.bot_3th_order_aimfilter - self.bot_4th_order_aimfilter) * bound(0, cvar("bot_ai_aimskill_order_filter_4th"),1);
 216         self.bot_5th_order_aimfilter= self.bot_5th_order_aimfilter
 217                 + (self.bot_4th_order_aimfilter - self.bot_5th_order_aimfilter) * bound(0, cvar("bot_ai_aimskill_order_filter_5th"),1);
 218
 219         //blend = (bound(0,skill,10)*0.1)*pow(1-bound(0,skill,10)*0.05,2.5)*5.656854249; //Plot formule before changing !
 220         blend = bound(0,skill+self.bot_aimskill,10)*0.1;
 221         desiredang = desiredang + blend *
 222         (
 223                   self.bot_1st_order_aimfilter * cvar("bot_ai_aimskill_order_mix_1st")
 224                 + self.bot_2nd_order_aimfilter * cvar("bot_ai_aimskill_order_mix_2nd")
 225                 + self.bot_3th_order_aimfilter * cvar("bot_ai_aimskill_order_mix_3th")
 226                 + self.bot_4th_order_aimfilter * cvar("bot_ai_aimskill_order_mix_4th")
 227                 + self.bot_5th_order_aimfilter * cvar("bot_ai_aimskill_order_mix_5th")
 228         );
 229
 230         // calculate turn angles
 231         diffang = desiredang - self.bot_mouseaim;
 232         // wrap yaw turn
 233         diffang_y = diffang_y - floor(diffang_y / 360) * 360;
 234         if (diffang_y >= 180)
 235                 diffang_y = diffang_y - 360;
 236         //dprint(" diff:", vtos(diffang));
 237
 238         if (time >= self.bot_aimthinktime)
 239         {
 240                 self.bot_aimthinktime = max(self.bot_aimthinktime + 0.5 - 0.05*(skill+self.bot_thinkskill), time);
 241                 self.bot_mouseaim = self.bot_mouseaim + diffang * (1-random()*0.1*bound(1,10-(skill+self.bot_thinkskill),10));
 242         }
 243
 244         //self.v_angle = self.v_angle + diffang * bound(0, r * frametime * (skill * 0.5 + 2), 1);
 245
 246         diffang = self.bot_mouseaim - desiredang;
 247         // wrap yaw turn
 248         diffang_y = diffang_y - floor(diffang_y / 360) * 360;
 249         if (diffang_y >= 180)
 250                 diffang_y = diffang_y - 360;
 251         desiredang = desiredang + diffang * bound(0,cvar("bot_ai_aimskill_think"),1);
 252
 253         // calculate turn angles
 254         diffang = desiredang - self.v_angle;
 255         // wrap yaw turn
 256         diffang_y = diffang_y - floor(diffang_y / 360) * 360;
 257         if (diffang_y >= 180)
 258                 diffang_y = diffang_y - 360;
 259         //dprint(" diff:", vtos(diffang));
 260
 261         // jitter tracking
 262         dist = vlen(diffang);
 263         //diffang = diffang + randomvec() * (dist * 0.05 * (3.5 - bound(0, skill, 3)));
 264
 265         // turn
 266         local float r, fixedrate, blendrate;
 267         fixedrate = cvar("bot_ai_aimskill_fixedrate") / bound(1,dist,1000);
 268         blendrate = cvar("bot_ai_aimskill_blendrate");
 269         r = max(fixedrate, blendrate);
 270         //self.v_angle = self.v_angle + diffang * bound(frametime, r * frametime * (2+skill*skill*0.05-random()*0.05*(10-skill)), 1);
 271         self.v_angle = self.v_angle + diffang * bound(delta_t, r * delta_t * (2+pow(skill+self.bot_mouseskill,3)*0.005-random()), 1);
 272         self.v_angle = self.v_angle * bound(0,cvar("bot_ai_aimskill_mouse"),1) + desiredang * bound(0,(1-cvar("bot_ai_aimskill_mouse")),1);
 273         //self.v_angle = self.v_angle + diffang * bound(0, r * frametime * (skill * 0.5 + 2), 1);
 274         //self.v_angle = self.v_angle + diffang * (1/ blendrate);
 275         self.v_angle_z = 0;
 276         self.v_angle_y = self.v_angle_y - floor(self.v_angle_y / 360) * 360;
 277         //dprint(" turn:", vtos(self.v_angle));
 278
 279         makevectors(self.v_angle);
 280         shotorg = self.origin + self.view_ofs;
 281         shotdir = v_forward;
 282
 283         //dprint(" dir:", vtos(v_forward));
 284         //te_lightning2(world, shotorg, shotorg + shotdir * 100);
 285
 286         // calculate turn angles again
 287         //diffang = desiredang - self.v_angle;
 288         //diffang_y = diffang_y - floor(diffang_y / 360) * 360;
 289         //if (diffang_y >= 180)
 290         //      diffang_y = diffang_y - 360;
 291
 292         //dprint("e ", vtos(diffang), " < ", ftos(maxfiredeviation), "\n");
 293
 294         // decide whether to fire this time
 295         // note the maxfiredeviation is in degrees so this has to convert to radians first
 296         //if ((normalize(v) * shotdir) >= cos(maxfiredeviation * (3.14159265358979323846 / 180)))
 297         if ((normalize(v) * shotdir) >= cos(maxfiredeviation * (3.14159265358979323846 / 180)))
 298         if (vlen(trace_endpos-shotorg) < 500+500*bound(0, skill+self.bot_aggresskill, 10) || random()*random()>bound(0,(skill+self.bot_aggresskill)*0.05,1))
 299                 self.bot_firetimer = time + bound(0.1, 0.5-(skill+self.bot_aggresskill)*0.05, 0.5);
 300         //traceline(shotorg,shotorg+shotdir*1000,FALSE,world);
 301         //dprint(ftos(maxfiredeviation),"\n");
 302         //dprint(" diff:", vtos(diffang), "\n");
 303
 304         return self.bot_canfire && (time < self.bot_firetimer);
 305 };
 306
 307 vector bot_shotlead(vector targorigin, vector targvelocity, float shotspeed, float shotdelay)
 308 {
 309         // Try to add code here that predicts gravity effect here, no clue HOW to though ... well not yet atleast...
 310         return targorigin + targvelocity * (shotdelay + vlen(targorigin - shotorg) / shotspeed);
 311 };
 312
 313 float bot_aim(float shotspeed, float shotspeedupward, float maxshottime, float applygravity)
 314 {
 315         local float f, r;
 316         local vector v;
 317         /*
 318         eprint(self);
 319         dprint("bot_aim(", ftos(shotspeed));
 320         dprint(", ", ftos(shotspeedupward));
 321         dprint(", ", ftos(maxshottime));
 322         dprint(", ", ftos(applygravity));
 323         dprint(");\n");
 324         */
 325         shotspeed *= g_weaponspeedfactor;
 326         shotspeedupward *= g_weaponspeedfactor;
 327         if (!shotspeed)
 328         {
 329                 dprint("bot_aim: WARNING: weapon ", W_Name(self.weapon), " shotspeed is zero!\n");
 330                 shotspeed = 1000000;
 331         }
 332         if (!maxshottime)
 333         {
 334                 dprint("bot_aim: WARNING: weapon ", W_Name(self.weapon), " maxshottime is zero!\n");
 335                 maxshottime = 1;
 336         }
 337         makevectors(self.v_angle);
 338         shotorg = self.origin + self.view_ofs;
 339         shotdir = v_forward;
 340         v = bot_shotlead(self.bot_aimtargorigin, self.bot_aimtargvelocity, shotspeed, self.bot_aimlatency);
 341         local float distanceratio;
 342         distanceratio =sqrt(bound(0,skill,10000))*0.3*(vlen(v-shotorg)-100)/cvar("bot_ai_aimskill_firetolerance_distdegrees");
 343         distanceratio = bound(0,distanceratio,1);
 344         r =  (cvar("bot_ai_aimskill_firetolerance_maxdegrees")-cvar("bot_ai_aimskill_firetolerance_mindegrees"))
 345                 * (1-distanceratio) + cvar("bot_ai_aimskill_firetolerance_mindegrees");
 346         if (applygravity && self.bot_aimtarg)
 347         {
 348                 if (!findtrajectorywithleading(shotorg, '0 0 0', '0 0 0', self.bot_aimtarg, shotspeed, shotspeedupward, maxshottime, 0, self))
 349                         return FALSE;
 350                 f = bot_aimdir(findtrajectory_velocity - shotspeedupward * '0 0 1', r);
 351         }
 352         else
 353         {
 354                 f = bot_aimdir(v - shotorg, r);
 355                 //dprint("AIM: ");dprint(vtos(self.bot_aimtargorigin));dprint(" + ");dprint(vtos(self.bot_aimtargvelocity));dprint(" * ");dprint(ftos(self.bot_aimlatency + vlen(self.bot_aimtargorigin - shotorg) / shotspeed));dprint(" = ");dprint(vtos(v));dprint(" : aimdir = ");dprint(vtos(normalize(v - shotorg)));dprint(" : ");dprint(vtos(shotdir));dprint("\n");
 356                 traceline(shotorg, shotorg + shotdir * 10000, FALSE, self);
 357                 if (trace_ent.takedamage)
 358                 if (trace_fraction < 1)
 359                 if (!bot_shouldattack(trace_ent))
 360                         return FALSE;
 361                 traceline(shotorg, self.bot_aimtargorigin, FALSE, self);
 362                 if (trace_fraction < 1)
 363                 if (trace_ent != self.enemy)
 364                 if (!bot_shouldattack(trace_ent))
 365                         return FALSE;
 366         }
 367         if (r > maxshottime * shotspeed)
 368                 return FALSE;
 369         return f;
 370 };