qcsrc/server/bot/default/waypoints.qc

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