qcsrc/server/bot/default/waypoints.qc

   1 #include "waypoints.qh"
   2
   3 #include <server/defs.qh>
   4 #include <server/miscfunctions.qh>
   5 #include "cvars.qh"
   6
   7 #include "bot.qh"
   8 #include "navigation.qh"
   9
  10 #include <common/state.qh>
  11
  12 #include "../../antilag.qh"
  13
  14 #include <common/constants.qh>
  15 #include <common/net_linked.qh>
  16
  17 #include <lib/warpzone/common.qh>
  18 #include <lib/warpzone/util_server.qh>
  19
  20 void waypoint_setupmodel(entity wp)
  21 {
  22         if (autocvar_g_waypointeditor)
  23         {
  24                 // TODO: add some sort of visible box in edit mode for box waypoints
  25                 vector m1 = wp.mins;
  26                 vector m2 = wp.maxs;
  27                 setmodel(wp, MDL_WAYPOINT);
  28                 setsize(wp, m1, m2);
  29                 wp.effects = EF_LOWPRECISION;
  30                 if (wp.wpflags & WAYPOINTFLAG_ITEM)
  31                         wp.colormod = '1 0 0';
  32                 else if (wp.wpflags & WAYPOINTFLAG_GENERATED)
  33                         wp.colormod = '1 1 0';
  34                 else
  35                         wp.colormod = '1 1 1';
  36         }
  37         else
  38                 wp.model = "";
  39 }
  40
  41 // create a new spawnfunc_waypoint and automatically link it to other waypoints, and link
  42 // them back to it as well
  43 // (suitable for spawnfunc_waypoint editor)
  44 entity waypoint_spawn(vector m1, vector m2, float f)
  45 {
  46         if(!(f & WAYPOINTFLAG_PERSONAL))
  47         {
  48                 IL_EACH(g_waypoints, boxesoverlap(m1, m2, it.absmin, it.absmax),
  49                 {
  50                         return it;
  51                 });
  52         }
  53
  54         entity w = new(waypoint);
  55         IL_PUSH(g_waypoints, w);
  56         w.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_PLAYERCLIP | DPCONTENTS_BOTCLIP;
  57         w.wpflags = f;
  58         w.solid = SOLID_TRIGGER;
  59         setorigin(w, (m1 + m2) * 0.5);
  60         setsize(w, m1 - w.origin, m2 - w.origin);
  61         if (w.size)
  62                 w.wpisbox = true;
  63
  64         if(!w.wpisbox)
  65         {
  66                 setsize(w, PL_MIN_CONST - '1 1 0', PL_MAX_CONST + '1 1 0');
  67                 if(!move_out_of_solid(w))
  68                 {
  69                         if(!(f & WAYPOINTFLAG_GENERATED))
  70                         {
  71                                 LOG_TRACE("Killed a waypoint that was stuck in solid at ", vtos(w.origin));
  72                                 delete(w);
  73                                 return NULL;
  74                         }
  75                         else
  76                         {
  77                                 if(autocvar_developer)
  78                                 {
  79                                         LOG_INFO("A generated waypoint is stuck in solid at ", vtos(w.origin));
  80                                         backtrace("Waypoint stuck");
  81                                 }
  82                         }
  83                 }
  84                 setsize(w, '0 0 0', '0 0 0');
  85         }
  86
  87         waypoint_clearlinks(w);
  88         //waypoint_schedulerelink(w);
  89
  90         waypoint_setupmodel(w);
  91
  92         return w;
  93 }
  94
  95 void waypoint_removelink(entity from, entity to)
  96 {
  97         if (from == to || (from.wpflags & WAYPOINTFLAG_NORELINK))
  98                 return;
  99
 100         bool found = false;
 101         if (!found && from.wp00 == to) found = true; if (found) {from.wp00 = from.wp01; from.wp00mincost = from.wp01mincost;}
 102         if (!found && from.wp01 == to) found = true; if (found) {from.wp01 = from.wp02; from.wp01mincost = from.wp02mincost;}
 103         if (!found && from.wp02 == to) found = true; if (found) {from.wp02 = from.wp03; from.wp02mincost = from.wp03mincost;}
 104         if (!found && from.wp03 == to) found = true; if (found) {from.wp03 = from.wp04; from.wp03mincost = from.wp04mincost;}
 105         if (!found && from.wp04 == to) found = true; if (found) {from.wp04 = from.wp05; from.wp04mincost = from.wp05mincost;}
 106         if (!found && from.wp05 == to) found = true; if (found) {from.wp05 = from.wp06; from.wp05mincost = from.wp06mincost;}
 107         if (!found && from.wp06 == to) found = true; if (found) {from.wp06 = from.wp07; from.wp06mincost = from.wp07mincost;}
 108         if (!found && from.wp07 == to) found = true; if (found) {from.wp07 = from.wp08; from.wp07mincost = from.wp08mincost;}
 109         if (!found && from.wp08 == to) found = true; if (found) {from.wp08 = from.wp09; from.wp08mincost = from.wp09mincost;}
 110         if (!found && from.wp09 == to) found = true; if (found) {from.wp09 = from.wp10; from.wp09mincost = from.wp10mincost;}
 111         if (!found && from.wp10 == to) found = true; if (found) {from.wp10 = from.wp11; from.wp10mincost = from.wp11mincost;}
 112         if (!found && from.wp11 == to) found = true; if (found) {from.wp11 = from.wp12; from.wp11mincost = from.wp12mincost;}
 113         if (!found && from.wp12 == to) found = true; if (found) {from.wp12 = from.wp13; from.wp12mincost = from.wp13mincost;}
 114         if (!found && from.wp13 == to) found = true; if (found) {from.wp13 = from.wp14; from.wp13mincost = from.wp14mincost;}
 115         if (!found && from.wp14 == to) found = true; if (found) {from.wp14 = from.wp15; from.wp14mincost = from.wp15mincost;}
 116         if (!found && from.wp15 == to) found = true; if (found) {from.wp15 = from.wp16; from.wp15mincost = from.wp16mincost;}
 117         if (!found && from.wp16 == to) found = true; if (found) {from.wp16 = from.wp17; from.wp16mincost = from.wp17mincost;}
 118         if (!found && from.wp17 == to) found = true; if (found) {from.wp17 = from.wp18; from.wp17mincost = from.wp18mincost;}
 119         if (!found && from.wp18 == to) found = true; if (found) {from.wp18 = from.wp19; from.wp18mincost = from.wp19mincost;}
 120         if (!found && from.wp19 == to) found = true; if (found) {from.wp19 = from.wp20; from.wp19mincost = from.wp20mincost;}
 121         if (!found && from.wp20 == to) found = true; if (found) {from.wp20 = from.wp21; from.wp20mincost = from.wp21mincost;}
 122         if (!found && from.wp21 == to) found = true; if (found) {from.wp21 = from.wp22; from.wp21mincost = from.wp22mincost;}
 123         if (!found && from.wp22 == to) found = true; if (found) {from.wp22 = from.wp23; from.wp22mincost = from.wp23mincost;}
 124         if (!found && from.wp23 == to) found = true; if (found) {from.wp23 = from.wp24; from.wp23mincost = from.wp24mincost;}
 125         if (!found && from.wp24 == to) found = true; if (found) {from.wp24 = from.wp25; from.wp24mincost = from.wp25mincost;}
 126         if (!found && from.wp25 == to) found = true; if (found) {from.wp25 = from.wp26; from.wp25mincost = from.wp26mincost;}
 127         if (!found && from.wp26 == to) found = true; if (found) {from.wp26 = from.wp27; from.wp26mincost = from.wp27mincost;}
 128         if (!found && from.wp27 == to) found = true; if (found) {from.wp27 = from.wp28; from.wp27mincost = from.wp28mincost;}
 129         if (!found && from.wp28 == to) found = true; if (found) {from.wp28 = from.wp29; from.wp28mincost = from.wp29mincost;}
 130         if (!found && from.wp29 == to) found = true; if (found) {from.wp29 = from.wp30; from.wp29mincost = from.wp30mincost;}
 131         if (!found && from.wp30 == to) found = true; if (found) {from.wp30 = from.wp31; from.wp30mincost = from.wp31mincost;}
 132         if (found) {from.wp31 = NULL; from.wp31mincost = 10000000;}
 133 }
 134
 135 bool waypoint_islinked(entity from, entity to)
 136 {
 137         if (from.wp00 == to) return true;if (from.wp01 == to) return true;if (from.wp02 == to) return true;if (from.wp03 == to) return true;
 138         if (from.wp04 == to) return true;if (from.wp05 == to) return true;if (from.wp06 == to) return true;if (from.wp07 == to) return true;
 139         if (from.wp08 == to) return true;if (from.wp09 == to) return true;if (from.wp10 == to) return true;if (from.wp11 == to) return true;
 140         if (from.wp12 == to) return true;if (from.wp13 == to) return true;if (from.wp14 == to) return true;if (from.wp15 == to) return true;
 141         if (from.wp16 == to) return true;if (from.wp17 == to) return true;if (from.wp18 == to) return true;if (from.wp19 == to) return true;
 142         if (from.wp20 == to) return true;if (from.wp21 == to) return true;if (from.wp22 == to) return true;if (from.wp23 == to) return true;
 143         if (from.wp24 == to) return true;if (from.wp25 == to) return true;if (from.wp26 == to) return true;if (from.wp27 == to) return true;
 144         if (from.wp28 == to) return true;if (from.wp29 == to) return true;if (from.wp30 == to) return true;if (from.wp31 == to) return true;
 145         return false;
 146 }
 147
 148 // add a new link to the spawnfunc_waypoint, replacing the furthest link it already has
 149 void waypoint_addlink(entity from, entity to)
 150 {
 151         float c;
 152
 153         if (from == to)
 154                 return;
 155         if (from.wpflags & WAYPOINTFLAG_NORELINK)
 156                 return;
 157
 158         if (waypoint_islinked(from, to))
 159                 return;
 160
 161         if (to.wpisbox || from.wpisbox)
 162         {
 163                 // if either is a box we have to find the nearest points on them to
 164                 // calculate the distance properly
 165                 vector v1, v2, m1, m2;
 166                 v1 = from.origin;
 167                 m1 = to.absmin;
 168                 m2 = to.absmax;
 169                 v1_x = bound(m1_x, v1_x, m2_x);
 170                 v1_y = bound(m1_y, v1_y, m2_y);
 171                 v1_z = bound(m1_z, v1_z, m2_z);
 172                 v2 = to.origin;
 173                 m1 = from.absmin;
 174                 m2 = from.absmax;
 175                 v2_x = bound(m1_x, v2_x, m2_x);
 176                 v2_y = bound(m1_y, v2_y, m2_y);
 177                 v2_z = bound(m1_z, v2_z, m2_z);
 178                 v2 = to.origin;
 179                 c = vlen(v2 - v1);
 180         }
 181         else
 182                 c = vlen(to.origin - from.origin);
 183
 184         if (from.wp31mincost < c) return;
 185         if (from.wp30mincost < c) {from.wp31 = to;from.wp31mincost = c;return;} from.wp31 = from.wp30;from.wp31mincost = from.wp30mincost;
 186         if (from.wp29mincost < c) {from.wp30 = to;from.wp30mincost = c;return;} from.wp30 = from.wp29;from.wp30mincost = from.wp29mincost;
 187         if (from.wp28mincost < c) {from.wp29 = to;from.wp29mincost = c;return;} from.wp29 = from.wp28;from.wp29mincost = from.wp28mincost;
 188         if (from.wp27mincost < c) {from.wp28 = to;from.wp28mincost = c;return;} from.wp28 = from.wp27;from.wp28mincost = from.wp27mincost;
 189         if (from.wp26mincost < c) {from.wp27 = to;from.wp27mincost = c;return;} from.wp27 = from.wp26;from.wp27mincost = from.wp26mincost;
 190         if (from.wp25mincost < c) {from.wp26 = to;from.wp26mincost = c;return;} from.wp26 = from.wp25;from.wp26mincost = from.wp25mincost;
 191         if (from.wp24mincost < c) {from.wp25 = to;from.wp25mincost = c;return;} from.wp25 = from.wp24;from.wp25mincost = from.wp24mincost;
 192         if (from.wp23mincost < c) {from.wp24 = to;from.wp24mincost = c;return;} from.wp24 = from.wp23;from.wp24mincost = from.wp23mincost;
 193         if (from.wp22mincost < c) {from.wp23 = to;from.wp23mincost = c;return;} from.wp23 = from.wp22;from.wp23mincost = from.wp22mincost;
 194         if (from.wp21mincost < c) {from.wp22 = to;from.wp22mincost = c;return;} from.wp22 = from.wp21;from.wp22mincost = from.wp21mincost;
 195         if (from.wp20mincost < c) {from.wp21 = to;from.wp21mincost = c;return;} from.wp21 = from.wp20;from.wp21mincost = from.wp20mincost;
 196         if (from.wp19mincost < c) {from.wp20 = to;from.wp20mincost = c;return;} from.wp20 = from.wp19;from.wp20mincost = from.wp19mincost;
 197         if (from.wp18mincost < c) {from.wp19 = to;from.wp19mincost = c;return;} from.wp19 = from.wp18;from.wp19mincost = from.wp18mincost;
 198         if (from.wp17mincost < c) {from.wp18 = to;from.wp18mincost = c;return;} from.wp18 = from.wp17;from.wp18mincost = from.wp17mincost;
 199         if (from.wp16mincost < c) {from.wp17 = to;from.wp17mincost = c;return;} from.wp17 = from.wp16;from.wp17mincost = from.wp16mincost;
 200         if (from.wp15mincost < c) {from.wp16 = to;from.wp16mincost = c;return;} from.wp16 = from.wp15;from.wp16mincost = from.wp15mincost;
 201         if (from.wp14mincost < c) {from.wp15 = to;from.wp15mincost = c;return;} from.wp15 = from.wp14;from.wp15mincost = from.wp14mincost;
 202         if (from.wp13mincost < c) {from.wp14 = to;from.wp14mincost = c;return;} from.wp14 = from.wp13;from.wp14mincost = from.wp13mincost;
 203         if (from.wp12mincost < c) {from.wp13 = to;from.wp13mincost = c;return;} from.wp13 = from.wp12;from.wp13mincost = from.wp12mincost;
 204         if (from.wp11mincost < c) {from.wp12 = to;from.wp12mincost = c;return;} from.wp12 = from.wp11;from.wp12mincost = from.wp11mincost;
 205         if (from.wp10mincost < c) {from.wp11 = to;from.wp11mincost = c;return;} from.wp11 = from.wp10;from.wp11mincost = from.wp10mincost;
 206         if (from.wp09mincost < c) {from.wp10 = to;from.wp10mincost = c;return;} from.wp10 = from.wp09;from.wp10mincost = from.wp09mincost;
 207         if (from.wp08mincost < c) {from.wp09 = to;from.wp09mincost = c;return;} from.wp09 = from.wp08;from.wp09mincost = from.wp08mincost;
 208         if (from.wp07mincost < c) {from.wp08 = to;from.wp08mincost = c;return;} from.wp08 = from.wp07;from.wp08mincost = from.wp07mincost;
 209         if (from.wp06mincost < c) {from.wp07 = to;from.wp07mincost = c;return;} from.wp07 = from.wp06;from.wp07mincost = from.wp06mincost;
 210         if (from.wp05mincost < c) {from.wp06 = to;from.wp06mincost = c;return;} from.wp06 = from.wp05;from.wp06mincost = from.wp05mincost;
 211         if (from.wp04mincost < c) {from.wp05 = to;from.wp05mincost = c;return;} from.wp05 = from.wp04;from.wp05mincost = from.wp04mincost;
 212         if (from.wp03mincost < c) {from.wp04 = to;from.wp04mincost = c;return;} from.wp04 = from.wp03;from.wp04mincost = from.wp03mincost;
 213         if (from.wp02mincost < c) {from.wp03 = to;from.wp03mincost = c;return;} from.wp03 = from.wp02;from.wp03mincost = from.wp02mincost;
 214         if (from.wp01mincost < c) {from.wp02 = to;from.wp02mincost = c;return;} from.wp02 = from.wp01;from.wp02mincost = from.wp01mincost;
 215         if (from.wp00mincost < c) {from.wp01 = to;from.wp01mincost = c;return;} from.wp01 = from.wp00;from.wp01mincost = from.wp00mincost;
 216         from.wp00 = to;from.wp00mincost = c;return;
 217 }
 218
 219 // relink this spawnfunc_waypoint
 220 // (precompile a list of all reachable waypoints from this spawnfunc_waypoint)
 221 // (SLOW!)
 222 void waypoint_think(entity this)
 223 {
 224         vector sv, sm1, sm2, ev, em1, em2, dv;
 225
 226         bot_calculate_stepheightvec();
 227
 228         bot_navigation_movemode = ((autocvar_bot_navigation_ignoreplayers) ? MOVE_NOMONSTERS : MOVE_NORMAL);
 229
 230         //dprint("waypoint_think wpisbox = ", ftos(this.wpisbox), "\n");
 231         sm1 = this.origin + this.mins;
 232         sm2 = this.origin + this.maxs;
 233         IL_EACH(g_waypoints, this != it,
 234         {
 235                 if (boxesoverlap(this.absmin, this.absmax, it.absmin, it.absmax))
 236                 {
 237                         waypoint_addlink(this, it);
 238                         waypoint_addlink(it, this);
 239                 }
 240                 else
 241                 {
 242                         ++relink_total;
 243                         if(!checkpvs(this.origin, it))
 244                         {
 245                                 ++relink_pvsculled;
 246                                 continue;
 247                         }
 248                         sv = it.origin;
 249                         sv.x = bound(sm1_x, sv.x, sm2_x);
 250                         sv.y = bound(sm1_y, sv.y, sm2_y);
 251                         sv.z = bound(sm1_z, sv.z, sm2_z);
 252                         ev = this.origin;
 253                         em1 = it.origin + it.mins;
 254                         em2 = it.origin + it.maxs;
 255                         ev.x = bound(em1_x, ev.x, em2_x);
 256                         ev.y = bound(em1_y, ev.y, em2_y);
 257                         ev.z = bound(em1_z, ev.z, em2_z);
 258                         dv = ev - sv;
 259                         dv.z = 0;
 260                         if(vdist(dv, >=, 1050)) // max search distance in XY
 261                         {
 262                                 ++relink_lengthculled;
 263                                 continue;
 264                         }
 265                         navigation_testtracewalk = 0;
 266                         if (!this.wpisbox)
 267                         {
 268                                 tracebox(sv - PL_MIN_CONST.z * '0 0 1', PL_MIN_CONST, PL_MAX_CONST, sv, false, this);
 269                                 if (!trace_startsolid)
 270                                 {
 271                                         //dprint("sv deviation", vtos(trace_endpos - sv), "\n");
 272                                         sv = trace_endpos + '0 0 1';
 273                                 }
 274                         }
 275                         if (!it.wpisbox)
 276                         {
 277                                 tracebox(ev - PL_MIN_CONST.z * '0 0 1', PL_MIN_CONST, PL_MAX_CONST, ev, false, it);
 278                                 if (!trace_startsolid)
 279                                 {
 280                                         //dprint("ev deviation", vtos(trace_endpos - ev), "\n");
 281                                         ev = trace_endpos + '0 0 1';
 282                                 }
 283                         }
 284                         //traceline(this.origin, it.origin, false, NULL);
 285                         //if (trace_fraction == 1)
 286                         if (!this.wpisbox && tracewalk(this, sv, PL_MIN_CONST, PL_MAX_CONST, ev, MOVE_NOMONSTERS))
 287                                 waypoint_addlink(this, it);
 288                         else
 289                                 relink_walkculled += 0.5;
 290                         if (!it.wpisbox && tracewalk(it, ev, PL_MIN_CONST, PL_MAX_CONST, sv, MOVE_NOMONSTERS))
 291                                 waypoint_addlink(it, this);
 292                         else
 293                                 relink_walkculled += 0.5;
 294                 }
 295         });
 296         navigation_testtracewalk = 0;
 297         this.wplinked = true;
 298 }
 299
 300 void waypoint_clearlinks(entity wp)
 301 {
 302         // clear links to other waypoints
 303         float f = 10000000;
 304         wp.wp00 = wp.wp01 = wp.wp02 = wp.wp03 = wp.wp04 = wp.wp05 = wp.wp06 = wp.wp07 = NULL;
 305         wp.wp08 = wp.wp09 = wp.wp10 = wp.wp11 = wp.wp12 = wp.wp13 = wp.wp14 = wp.wp15 = NULL;
 306         wp.wp16 = wp.wp17 = wp.wp18 = wp.wp19 = wp.wp20 = wp.wp21 = wp.wp22 = wp.wp23 = NULL;
 307         wp.wp24 = wp.wp25 = wp.wp26 = wp.wp27 = wp.wp28 = wp.wp29 = wp.wp30 = wp.wp31 = NULL;
 308
 309         wp.wp00mincost = wp.wp01mincost = wp.wp02mincost = wp.wp03mincost = wp.wp04mincost = wp.wp05mincost = wp.wp06mincost = wp.wp07mincost = f;
 310         wp.wp08mincost = wp.wp09mincost = wp.wp10mincost = wp.wp11mincost = wp.wp12mincost = wp.wp13mincost = wp.wp14mincost = wp.wp15mincost = f;
 311         wp.wp16mincost = wp.wp17mincost = wp.wp18mincost = wp.wp19mincost = wp.wp20mincost = wp.wp21mincost = wp.wp22mincost = wp.wp23mincost = f;
 312         wp.wp24mincost = wp.wp25mincost = wp.wp26mincost = wp.wp27mincost = wp.wp28mincost = wp.wp29mincost = wp.wp30mincost = wp.wp31mincost = f;
 313
 314         wp.wplinked = false;
 315 }
 316
 317 // tell a spawnfunc_waypoint to relink
 318 void waypoint_schedulerelink(entity wp)
 319 {
 320         if (wp == NULL)
 321                 return;
 322
 323         waypoint_setupmodel(wp);
 324         wp.wpisbox = vdist(wp.size, >, 0);
 325         wp.enemy = NULL;
 326         if (!(wp.wpflags & WAYPOINTFLAG_PERSONAL))
 327                 wp.owner = NULL;
 328         if (!(wp.wpflags & WAYPOINTFLAG_NORELINK))
 329                 waypoint_clearlinks(wp);
 330         // schedule an actual relink on next frame
 331         setthink(wp, waypoint_think);
 332         wp.nextthink = time;
 333         wp.effects = EF_LOWPRECISION;
 334 }
 335
 336 // spawnfunc_waypoint map entity
 337 spawnfunc(waypoint)
 338 {
 339         IL_PUSH(g_waypoints, this);
 340
 341         setorigin(this, this.origin);
 342         // schedule a relink after other waypoints have had a chance to spawn
 343         waypoint_clearlinks(this);
 344         //waypoint_schedulerelink(this);
 345 }
 346
 347 void waypoint_remove(entity wp)
 348 {
 349         // tell all waypoints linked to wp that they need to relink
 350         IL_EACH(g_waypoints, it != wp,
 351         {
 352                 if (waypoint_islinked(it, wp))
 353                         waypoint_removelink(it, wp);
 354         });
 355         delete(wp);
 356 }
 357
 358 void waypoint_removeall()
 359 {
 360         IL_EACH(g_waypoints, true,
 361         {
 362                 delete(it);
 363         });
 364 }
 365
 366 // tell all waypoints to relink
 367 // actually this is useful only to update relink_* stats
 368 void waypoint_schedulerelinkall()
 369 {
 370         relink_total = relink_walkculled = relink_pvsculled = relink_lengthculled = 0;
 371         IL_EACH(g_waypoints, true,
 372         {
 373                 waypoint_schedulerelink(it);
 374         });
 375         waypoint_load_links_hardwired();
 376 }
 377
 378 // Load waypoint links from file
 379 float waypoint_load_links()
 380 {
 381         string filename, s;
 382         float file, tokens, c = 0, found;
 383         entity wp_from = NULL, wp_to;
 384         vector wp_to_pos, wp_from_pos;
 385         filename = strcat("maps/", mapname);
 386         filename = strcat(filename, ".waypoints.cache");
 387         file = fopen(filename, FILE_READ);
 388
 389         if (file < 0)
 390         {
 391                 LOG_TRACE("waypoint links load from ");
 392                 LOG_TRACE(filename);
 393                 LOG_TRACE(" failed");
 394                 return false;
 395         }
 396
 397         while ((s = fgets(file)))
 398         {
 399                 tokens = tokenizebyseparator(s, "*");
 400
 401                 if (tokens!=2)
 402                 {
 403                         // bad file format
 404                         fclose(file);
 405                         return false;
 406                 }
 407
 408                 wp_from_pos     = stov(argv(0));
 409                 wp_to_pos       = stov(argv(1));
 410
 411                 // Search "from" waypoint
 412                 if(!wp_from || wp_from.origin!=wp_from_pos)
 413                 {
 414                         wp_from = findradius(wp_from_pos, 1);
 415                         found = false;
 416                         while(wp_from)
 417                         {
 418                                 if(vdist(wp_from.origin - wp_from_pos, <, 1))
 419                                 if(wp_from.classname == "waypoint")
 420                                 {
 421                                         found = true;
 422                                         break;
 423                                 }
 424                                 wp_from = wp_from.chain;
 425                         }
 426
 427                         if(!found)
 428                         {
 429                                 LOG_TRACE("waypoint_load_links: couldn't find 'from' waypoint at ", vtos(wp_from_pos));
 430                                 continue;
 431                         }
 432
 433                 }
 434
 435                 // Search "to" waypoint
 436                 wp_to = findradius(wp_to_pos, 1);
 437                 found = false;
 438                 while(wp_to)
 439                 {
 440                         if(vdist(wp_to.origin - wp_to_pos, <, 1))
 441                         if(wp_to.classname == "waypoint")
 442                         {
 443                                 found = true;
 444                                 break;
 445                         }
 446                         wp_to = wp_to.chain;
 447                 }
 448
 449                 if(!found)
 450                 {
 451                         LOG_TRACE("waypoint_load_links: couldn't find 'to' waypoint at ", vtos(wp_to_pos));
 452                         continue;
 453                 }
 454
 455                 ++c;
 456                 waypoint_addlink(wp_from, wp_to);
 457         }
 458
 459         fclose(file);
 460
 461         LOG_TRACE("loaded ", ftos(c), " waypoint links from maps/", mapname, ".waypoints.cache");
 462
 463         botframe_cachedwaypointlinks = true;
 464         return true;
 465 }
 466
 467 void waypoint_load_or_remove_links_hardwired(bool removal_mode)
 468 {
 469         string filename, s;
 470         float file, tokens, c = 0, found;
 471         entity wp_from = NULL, wp_to;
 472         vector wp_to_pos, wp_from_pos;
 473         filename = strcat("maps/", mapname);
 474         filename = strcat(filename, ".waypoints.hardwired");
 475         file = fopen(filename, FILE_READ);
 476
 477         botframe_loadedforcedlinks = true;
 478
 479         if (file < 0)
 480         {
 481                 if(!removal_mode)
 482                         LOG_TRACE("waypoint links load from ", filename, " failed");
 483                 return;
 484         }
 485
 486         while ((s = fgets(file)))
 487         {
 488                 if(substring(s, 0, 2)=="//")
 489                         continue;
 490
 491                 if(substring(s, 0, 1)=="#")
 492                         continue;
 493
 494                 tokens = tokenizebyseparator(s, "*");
 495
 496                 if (tokens!=2)
 497                         continue;
 498
 499                 wp_from_pos     = stov(argv(0));
 500                 wp_to_pos       = stov(argv(1));
 501
 502                 // Search "from" waypoint
 503                 if(!wp_from || wp_from.origin!=wp_from_pos)
 504                 {
 505                         wp_from = findradius(wp_from_pos, 5);
 506                         found = false;
 507                         while(wp_from)
 508                         {
 509                                 if(vdist(wp_from.origin - wp_from_pos, <, 5))
 510                                 if(wp_from.classname == "waypoint")
 511                                 {
 512                                         found = true;
 513                                         break;
 514                                 }
 515                                 wp_from = wp_from.chain;
 516                         }
 517
 518                         if(!found)
 519                         {
 520                                 if(!removal_mode)
 521                                         LOG_INFO("NOTICE: Can not find waypoint at ", vtos(wp_from_pos), ". Path skipped");
 522                                 continue;
 523                         }
 524                 }
 525
 526                 // Search "to" waypoint
 527                 wp_to = findradius(wp_to_pos, 5);
 528                 found = false;
 529                 while(wp_to)
 530                 {
 531                         if(vdist(wp_to.origin - wp_to_pos, <, 5))
 532                         if(wp_to.classname == "waypoint")
 533                         {
 534                                 found = true;
 535                                 break;
 536                         }
 537                         wp_to = wp_to.chain;
 538                 }
 539
 540                 if(!found)
 541                 {
 542                         if(!removal_mode)
 543                                 LOG_INFO("NOTICE: Can not find waypoint at ", vtos(wp_to_pos), ". Path skipped");
 544                         continue;
 545                 }
 546
 547                 ++c;
 548                 if(removal_mode)
 549                 {
 550                         waypoint_removelink(wp_from, wp_to);
 551                         continue;
 552                 }
 553
 554                 waypoint_addlink(wp_from, wp_to);
 555                 wp_from.wphardwired = true;
 556                 wp_to.wphardwired = true;
 557         }
 558
 559         fclose(file);
 560
 561         if(!removal_mode)
 562                 LOG_TRACE("loaded ", ftos(c), " waypoint links from maps/", mapname, ".waypoints.hardwired");
 563 }
 564
 565 void waypoint_load_links_hardwired() { waypoint_load_or_remove_links_hardwired(false); }
 566 void waypoint_remove_links_hardwired() { waypoint_load_or_remove_links_hardwired(true); }
 567
 568 entity waypoint_get_link(entity w, float i)
 569 {
 570         switch(i)
 571         {
 572                 case  0:return w.wp00;
 573                 case  1:return w.wp01;
 574                 case  2:return w.wp02;
 575                 case  3:return w.wp03;
 576                 case  4:return w.wp04;
 577                 case  5:return w.wp05;
 578                 case  6:return w.wp06;
 579                 case  7:return w.wp07;
 580                 case  8:return w.wp08;
 581                 case  9:return w.wp09;
 582                 case 10:return w.wp10;
 583                 case 11:return w.wp11;
 584                 case 12:return w.wp12;
 585                 case 13:return w.wp13;
 586                 case 14:return w.wp14;
 587                 case 15:return w.wp15;
 588                 case 16:return w.wp16;
 589                 case 17:return w.wp17;
 590                 case 18:return w.wp18;
 591                 case 19:return w.wp19;
 592                 case 20:return w.wp20;
 593                 case 21:return w.wp21;
 594                 case 22:return w.wp22;
 595                 case 23:return w.wp23;
 596                 case 24:return w.wp24;
 597                 case 25:return w.wp25;
 598                 case 26:return w.wp26;
 599                 case 27:return w.wp27;
 600                 case 28:return w.wp28;
 601                 case 29:return w.wp29;
 602                 case 30:return w.wp30;
 603                 case 31:return w.wp31;
 604                 default:return NULL;
 605         }
 606 }
 607
 608 // Save all waypoint links to a file
 609 void waypoint_save_links()
 610 {
 611         // temporarily remove hardwired links so they don't get saved among normal links
 612         waypoint_remove_links_hardwired();
 613
 614         string filename = sprintf("maps/%s.waypoints.cache", mapname);
 615         int file = fopen(filename, FILE_WRITE);
 616         if (file < 0)
 617         {
 618                 LOG_INFOF("waypoint link save to %s failed", filename);
 619                 return;
 620         }
 621
 622         int c = 0;
 623         IL_EACH(g_waypoints, true,
 624         {
 625                 for(int j = 0; j < 32; ++j)
 626                 {
 627                         entity link = waypoint_get_link(it, j);
 628                         if(link)
 629                         {
 630                                 string s = strcat(vtos(it.origin), "*", vtos(link.origin), "\n");
 631                                 fputs(file, s);
 632                                 ++c;
 633                         }
 634                 }
 635         });
 636         fclose(file);
 637         botframe_cachedwaypointlinks = true;
 638
 639         LOG_INFOF("saved %d waypoint links to maps/%s.waypoints.cache", c, mapname);
 640
 641         waypoint_load_links_hardwired();
 642 }
 643
 644 // save waypoints to gamedir/data/maps/mapname.waypoints
 645 void waypoint_saveall()
 646 {
 647         string filename = sprintf("maps/%s.waypoints", mapname);
 648         int file = fopen(filename, FILE_WRITE);
 649         if (file < 0)
 650         {
 651                 waypoint_save_links(); // save anyway?
 652                 botframe_loadedforcedlinks = false;
 653
 654                 LOG_INFOF("waypoint links: save to %s failed", filename);
 655                 return;
 656         }
 657
 658         int c = 0;
 659         IL_EACH(g_waypoints, true,
 660         {
 661                 if(it.wpflags & WAYPOINTFLAG_GENERATED)
 662                         continue;
 663
 664                 string s;
 665                 s = strcat(vtos(it.origin + it.mins), "\n");
 666                 s = strcat(s, vtos(it.origin + it.maxs));
 667                 s = strcat(s, "\n");
 668                 s = strcat(s, ftos(it.wpflags));
 669                 s = strcat(s, "\n");
 670                 fputs(file, s);
 671                 c++;
 672         });
 673         fclose(file);
 674         waypoint_save_links();
 675         botframe_loadedforcedlinks = false;
 676
 677         LOG_INFOF("saved %d waypoints to maps/%s.waypoints", c, mapname);
 678 }
 679
 680 // load waypoints from file
 681 float waypoint_loadall()
 682 {
 683         string filename, s;
 684         float file, cwp, cwb, fl;
 685         vector m1, m2;
 686         cwp = 0;
 687         cwb = 0;
 688         filename = strcat("maps/", mapname);
 689         filename = strcat(filename, ".waypoints");
 690         file = fopen(filename, FILE_READ);
 691         if (file >= 0)
 692         {
 693                 while ((s = fgets(file)))
 694                 {
 695                         m1 = stov(s);
 696                         s = fgets(file);
 697                         if (!s)
 698                                 break;
 699                         m2 = stov(s);
 700                         s = fgets(file);
 701                         if (!s)
 702                                 break;
 703                         fl = stof(s);
 704                         waypoint_spawn(m1, m2, fl);
 705                         if (m1 == m2)
 706                                 cwp = cwp + 1;
 707                         else
 708                                 cwb = cwb + 1;
 709                 }
 710                 fclose(file);
 711                 LOG_TRACE("loaded ", ftos(cwp), " waypoints and ", ftos(cwb), " wayboxes from maps/", mapname, ".waypoints");
 712         }
 713         else
 714         {
 715                 LOG_TRACE("waypoint load from ", filename, " failed");
 716         }
 717         return cwp + cwb;
 718 }
 719
 720 vector waypoint_fixorigin(vector position)
 721 {
 722         tracebox(position + '0 0 1' * (1 - PL_MIN_CONST.z), PL_MIN_CONST, PL_MAX_CONST, position + '0 0 -512', MOVE_NOMONSTERS, NULL);
 723         if(trace_fraction < 1)
 724                 position = trace_endpos;
 725         //traceline(position, position + '0 0 -512', MOVE_NOMONSTERS, NULL);
 726         //print("position is ", ftos(trace_endpos_z - position_z), " above solid\n");
 727         return position;
 728 }
 729
 730 void waypoint_spawnforitem_force(entity e, vector org)
 731 {
 732         // Fix the waypoint altitude if necessary
 733         org = waypoint_fixorigin(org);
 734
 735         // don't spawn an item spawnfunc_waypoint if it already exists
 736         IL_EACH(g_waypoints, true,
 737         {
 738                 if(it.wpisbox)
 739                 {
 740                         if(boxesoverlap(org, org, it.absmin, it.absmax))
 741                         {
 742                                 e.nearestwaypoint = it;
 743                                 return;
 744                         }
 745                 }
 746                 else
 747                 {
 748                         if(vdist(it.origin - org, <, 16))
 749                         {
 750                                 e.nearestwaypoint = it;
 751                                 return;
 752                         }
 753                 }
 754         });
 755
 756         e.nearestwaypoint = waypoint_spawn(org, org, WAYPOINTFLAG_GENERATED | WAYPOINTFLAG_ITEM);
 757 }
 758
 759 void waypoint_spawnforitem(entity e)
 760 {
 761         if(!bot_waypoints_for_items)
 762                 return;
 763
 764         waypoint_spawnforitem_force(e, e.origin);
 765 }
 766
 767 void waypoint_spawnforteleporter_boxes(entity e, vector org1, vector org2, vector destination1, vector destination2, float timetaken)
 768 {
 769         entity w;
 770         entity dw;
 771         w = waypoint_spawn(org1, org2, WAYPOINTFLAG_GENERATED | WAYPOINTFLAG_TELEPORT | WAYPOINTFLAG_NORELINK);
 772         dw = waypoint_spawn(destination1, destination2, WAYPOINTFLAG_GENERATED);
 773         // one way link to the destination
 774         w.wp00 = dw;
 775         w.wp00mincost = timetaken; // this is just for jump pads
 776         // the teleporter's nearest spawnfunc_waypoint is this one
 777         // (teleporters are not goals, so this is probably useless)
 778         e.nearestwaypoint = w;
 779         e.nearestwaypointtimeout = -1;
 780 }
 781
 782 void waypoint_spawnforteleporter_v(entity e, vector org, vector destination, float timetaken)
 783 {
 784         org = waypoint_fixorigin(org);
 785         destination = waypoint_fixorigin(destination);
 786         waypoint_spawnforteleporter_boxes(e, org, org, destination, destination, timetaken);
 787 }
 788
 789 void waypoint_spawnforteleporter(entity e, vector destination, float timetaken)
 790 {
 791         destination = waypoint_fixorigin(destination);
 792         waypoint_spawnforteleporter_boxes(e, e.absmin, e.absmax, destination, destination, timetaken);
 793 }
 794
 795 entity waypoint_spawnpersonal(entity this, vector position)
 796 {
 797         entity w;
 798
 799         // drop the waypoint to a proper location:
 800         //   first move it up by a player height
 801         //   then move it down to hit the floor with player bbox size
 802         position = waypoint_fixorigin(position);
 803
 804         w = waypoint_spawn(position, position, WAYPOINTFLAG_GENERATED | WAYPOINTFLAG_PERSONAL);
 805         w.nearestwaypoint = NULL;
 806         w.nearestwaypointtimeout = 0;
 807         w.owner = this;
 808
 809         waypoint_schedulerelink(w);
 810
 811         return w;
 812 }
 813
 814 void waypoint_showlink(entity wp1, entity wp2, int display_type)
 815 {
 816         if (!(wp1 && wp2))
 817                 return;
 818
 819         if (wp1.wphardwired && wp2.wphardwired)
 820                 te_beam(NULL, wp1.origin, wp2.origin);
 821         else if (display_type == 1)
 822                 te_lightning2(NULL, wp1.origin, wp2.origin);
 823 }
 824
 825 void botframe_showwaypointlinks()
 826 {
 827         if (time < botframe_waypointeditorlightningtime)
 828                 return;
 829         botframe_waypointeditorlightningtime = time + 0.5;
 830         FOREACH_CLIENT(IS_PLAYER(it) && !it.isbot,
 831         {
 832                 int display_type = 0;
 833                 entity head = navigation_findnearestwaypoint(it, false);
 834                 if (IS_ONGROUND(it) || it.waterlevel > WATERLEVEL_NONE)
 835                         display_type = 1; // default
 836                 else if(head && (head.wphardwired))
 837                         display_type = 2; // only hardwired
 838
 839                 if (display_type)
 840                 {
 841                         //navigation_testtracewalk = true;
 842                         //print("currently selected WP is ", etos(head), "\n");
 843                         //navigation_testtracewalk = false;
 844                         if (head)
 845                         {
 846                                 te_lightning2(NULL, head.origin, it.origin);
 847                                 waypoint_showlink(head.wp00, head, display_type);
 848                                 waypoint_showlink(head.wp01, head, display_type);
 849                                 waypoint_showlink(head.wp02, head, display_type);
 850                                 waypoint_showlink(head.wp03, head, display_type);
 851                                 waypoint_showlink(head.wp04, head, display_type);
 852                                 waypoint_showlink(head.wp05, head, display_type);
 853                                 waypoint_showlink(head.wp06, head, display_type);
 854                                 waypoint_showlink(head.wp07, head, display_type);
 855                                 waypoint_showlink(head.wp08, head, display_type);
 856                                 waypoint_showlink(head.wp09, head, display_type);
 857                                 waypoint_showlink(head.wp10, head, display_type);
 858                                 waypoint_showlink(head.wp11, head, display_type);
 859                                 waypoint_showlink(head.wp12, head, display_type);
 860                                 waypoint_showlink(head.wp13, head, display_type);
 861                                 waypoint_showlink(head.wp14, head, display_type);
 862                                 waypoint_showlink(head.wp15, head, display_type);
 863                                 waypoint_showlink(head.wp16, head, display_type);
 864                                 waypoint_showlink(head.wp17, head, display_type);
 865                                 waypoint_showlink(head.wp18, head, display_type);
 866                                 waypoint_showlink(head.wp19, head, display_type);
 867                                 waypoint_showlink(head.wp20, head, display_type);
 868                                 waypoint_showlink(head.wp21, head, display_type);
 869                                 waypoint_showlink(head.wp22, head, display_type);
 870                                 waypoint_showlink(head.wp23, head, display_type);
 871                                 waypoint_showlink(head.wp24, head, display_type);
 872                                 waypoint_showlink(head.wp25, head, display_type);
 873                                 waypoint_showlink(head.wp26, head, display_type);
 874                                 waypoint_showlink(head.wp27, head, display_type);
 875                                 waypoint_showlink(head.wp28, head, display_type);
 876                                 waypoint_showlink(head.wp29, head, display_type);
 877                                 waypoint_showlink(head.wp30, head, display_type);
 878                                 waypoint_showlink(head.wp31, head, display_type);
 879                         }
 880                 }
 881         });
 882 }
 883
 884 float botframe_autowaypoints_fixdown(vector v)
 885 {
 886         tracebox(v, PL_MIN_CONST, PL_MAX_CONST, v + '0 0 -64', MOVE_NOMONSTERS, NULL);
 887         if(trace_fraction >= 1)
 888                 return 0;
 889         return 1;
 890 }
 891
 892 float botframe_autowaypoints_createwp(vector v, entity p, .entity fld, float f)
 893 {
 894         IL_EACH(g_waypoints, boxesoverlap(v - '32 32 32', v + '32 32 32', it.absmin, it.absmax),
 895         {
 896                 // if a matching spawnfunc_waypoint already exists, don't add a duplicate
 897                 return 0;
 898         });
 899
 900         waypoint_schedulerelink(p.(fld) = waypoint_spawn(v, v, f));
 901         return 1;
 902 }
 903
 904 // return value:
 905 //    1 = WP created
 906 //    0 = no action needed
 907 //   -1 = temp fail, try from world too
 908 //   -2 = permanent fail, do not retry
 909 float botframe_autowaypoints_fix_from(entity p, float walkfromwp, entity wp, .entity fld)
 910 {
 911         // make it possible to go from p to wp, if we can
 912         // if wp is NULL, nearest is chosen
 913
 914         entity w;
 915         vector porg;
 916         float t, tmin, tmax;
 917         vector o;
 918         vector save;
 919
 920         if(!botframe_autowaypoints_fixdown(p.origin))
 921                 return -2;
 922         porg = trace_endpos;
 923
 924         if(wp)
 925         {
 926                 // if any WP w fulfills wp -> w -> porg and w is closer than wp, then switch from wp to w
 927
 928                 // if wp -> porg, then OK
 929                 float maxdist;
 930                 if(navigation_waypoint_will_link(wp.origin, porg, p, walkfromwp, 1050))
 931                 {
 932                         // we may find a better one
 933                         maxdist = vlen(wp.origin - porg);
 934                 }
 935                 else
 936                 {
 937                         // accept any "good"
 938                         maxdist = 2100;
 939                 }
 940
 941                 float bestdist = maxdist;
 942                 IL_EACH(g_waypoints, it != wp && !(it.wpflags & WAYPOINTFLAG_NORELINK),
 943                 {
 944                         float d = vlen(wp.origin - it.origin) + vlen(it.origin - porg);
 945                         if(d < bestdist)
 946                         if(navigation_waypoint_will_link(wp.origin, it.origin, p, walkfromwp, 1050))
 947                         if(navigation_waypoint_will_link(it.origin, porg, p, walkfromwp, 1050))
 948                         {
 949                                 bestdist = d;
 950                                 p.(fld) = it;
 951                         }
 952                 });
 953                 if(bestdist < maxdist)
 954                 {
 955                         LOG_INFO("update chain to new nearest WP ", etos(p.(fld)));
 956                         return 0;
 957                 }
 958
 959                 if(bestdist < 2100)
 960                 {
 961                         // we know maxdist < 2100
 962                         // so wp -> porg is still valid
 963                         // all is good
 964                         p.(fld) = wp;
 965                         return 0;
 966                 }
 967
 968                 // otherwise, no existing WP can fix our issues
 969         }
 970         else
 971         {
 972                 save = p.origin;
 973                 setorigin(p, porg);
 974                 w = navigation_findnearestwaypoint(p, walkfromwp);
 975                 setorigin(p, save);
 976                 if(w)
 977                 {
 978                         p.(fld) = w;
 979                         return 0;
 980                 }
 981         }
 982
 983         tmin = 0;
 984         tmax = 1;
 985         for (;;)
 986         {
 987                 if(tmax - tmin < 0.001)
 988                 {
 989                         // did not get a good candidate
 990                         return -1;
 991                 }
 992
 993                 t = (tmin + tmax) * 0.5;
 994                 o = antilag_takebackorigin(p, CS(p), time - t);
 995                 if(!botframe_autowaypoints_fixdown(o))
 996                         return -2;
 997                 o = trace_endpos;
 998
 999                 if(wp)
1000                 {
1001                         if(!navigation_waypoint_will_link(wp.origin, o, p, walkfromwp, 1050))
1002                         {
1003                                 // we cannot walk from wp.origin to o
1004                                 // get closer to tmax
1005                                 tmin = t;
1006                                 continue;
1007                         }
1008                 }
1009                 else
1010                 {
1011                         save = p.origin;
1012                         setorigin(p, o);
1013                         w = navigation_findnearestwaypoint(p, walkfromwp);
1014                         setorigin(p, save);
1015                         if(!w)
1016                         {
1017                                 // we cannot walk from any WP to o
1018                                 // get closer to tmax
1019                                 tmin = t;
1020                                 continue;
1021                         }
1022                 }
1023
1024                 // if we get here, o is valid regarding waypoints
1025                 // check if o is connected right to the player
1026                 // we break if it succeeds, as that means o is a good waypoint location
1027                 if(navigation_waypoint_will_link(o, porg, p, walkfromwp, 1050))
1028                         break;
1029
1030                 // o is no good, we need to get closer to the player
1031                 tmax = t;
1032         }
1033
1034         LOG_INFO("spawning a waypoint for connecting to ", etos(wp));
1035         botframe_autowaypoints_createwp(o, p, fld, 0);
1036         return 1;
1037 }
1038
1039 // automatically create missing waypoints
1040 .entity botframe_autowaypoints_lastwp0, botframe_autowaypoints_lastwp1;
1041 void botframe_autowaypoints_fix(entity p, float walkfromwp, .entity fld)
1042 {
1043         float r = botframe_autowaypoints_fix_from(p, walkfromwp, p.(fld), fld);
1044         if(r != -1)
1045                 return;
1046         r = botframe_autowaypoints_fix_from(p, walkfromwp, NULL, fld);
1047         if(r != -1)
1048                 return;
1049
1050         LOG_INFO("emergency: got no good nearby WP to build a link from, starting a new chain");
1051         if(!botframe_autowaypoints_fixdown(p.origin))
1052                 return; // shouldn't happen, caught above
1053         botframe_autowaypoints_createwp(trace_endpos, p, fld, WAYPOINTFLAG_PROTECTED);
1054 }
1055
1056 void botframe_deleteuselesswaypoints()
1057 {
1058         IL_EACH(g_items, it.bot_pickup,
1059         {
1060                 // NOTE: this protects waypoints if they're the ONLY nearest
1061                 // waypoint. That's the intention.
1062                 navigation_findnearestwaypoint(it, false);  // Walk TO item.
1063                 navigation_findnearestwaypoint(it, true);  // Walk FROM item.
1064         });
1065         IL_EACH(g_waypoints, true,
1066         {
1067                 it.wpflags |= WAYPOINTFLAG_DEAD_END;
1068                 it.wpflags &= ~WAYPOINTFLAG_USEFUL;
1069                 // WP is useful if:
1070                 if (it.wpflags & WAYPOINTFLAG_ITEM)
1071                         it.wpflags |= WAYPOINTFLAG_USEFUL;
1072                 if (it.wpflags & WAYPOINTFLAG_TELEPORT)
1073                         it.wpflags |= WAYPOINTFLAG_USEFUL;
1074                 if (it.wpflags & WAYPOINTFLAG_PROTECTED)
1075                         it.wpflags |= WAYPOINTFLAG_USEFUL;
1076                 // b) WP is closest WP for an item/spawnpoint/other entity
1077                 //    This has been done above by protecting these WPs.
1078         });
1079         // c) There are w1, w, w2 so that w1 -> w, w -> w2 and not w1 -> w2.
1080         IL_EACH(g_waypoints, !(it.wpflags & WAYPOINTFLAG_PERSONAL),
1081         {
1082                 for (int m = 0; m < 32; ++m)
1083                 {
1084                         entity w = waypoint_get_link(it, m);
1085                         if (!w)
1086                                 break;
1087                         if (w.wpflags & WAYPOINTFLAG_PERSONAL)
1088                                 continue;
1089                         if (w.wpflags & WAYPOINTFLAG_USEFUL)
1090                                 continue;
1091                         for (int j = 0; j < 32; ++j)
1092                         {
1093                                 entity w2 = waypoint_get_link(w, j);
1094                                 if (!w2)
1095                                         break;
1096                                 if (it == w2)
1097                                         continue;
1098                                 if (w2.wpflags & WAYPOINTFLAG_PERSONAL)
1099                                         continue;
1100                                 // If we got here, it != w2 exist with it -> w
1101                                 // and w -> w2. That means the waypoint is not
1102                                 // a dead end.
1103                                 w.wpflags &= ~WAYPOINTFLAG_DEAD_END;
1104                                 for (int k = 0; k < 32; ++k)
1105                                 {
1106                                         if (waypoint_get_link(it, k) == w2)
1107                                                 continue;
1108                                         // IF WE GET HERE, w is proven useful
1109                                         // to get from it to w2!
1110                                         w.wpflags |= WAYPOINTFLAG_USEFUL;
1111                                         goto next;
1112                                 }
1113                         }
1114 LABEL(next)
1115                 }
1116         });
1117         // d) The waypoint is a dead end. Dead end waypoints must be kept as
1118         //     they are needed to complete routes while autowaypointing.
1119
1120         IL_EACH(g_waypoints, !(it.wpflags & (WAYPOINTFLAG_USEFUL | WAYPOINTFLAG_DEAD_END)),
1121         {
1122                 LOG_INFOF("Removed a waypoint at %v. Try again for more!", it.origin);
1123                 te_explosion(it.origin);
1124                 waypoint_remove(it);
1125                 break;
1126         });
1127
1128         IL_EACH(g_waypoints, true,
1129         {
1130                 it.wpflags &= ~(WAYPOINTFLAG_USEFUL | WAYPOINTFLAG_DEAD_END); // temp flag
1131         });
1132 }
1133
1134 void botframe_autowaypoints()
1135 {
1136         FOREACH_CLIENT(IS_PLAYER(it) && IS_REAL_CLIENT(it) && !IS_DEAD(it), {
1137                 // going back is broken, so only fix waypoints to walk TO the player
1138                 //botframe_autowaypoints_fix(p, false, botframe_autowaypoints_lastwp0);
1139                 botframe_autowaypoints_fix(it, true, botframe_autowaypoints_lastwp1);
1140                 //te_explosion(p.botframe_autowaypoints_lastwp0.origin);
1141         });
1142
1143         if (autocvar_g_waypointeditor_auto >= 2) {
1144                 botframe_deleteuselesswaypoints();
1145         }
1146 }
1147