]> de.git.xonotic.org Git - xonotic/xonotic-data.pk3dir.git/blobdiff - qcsrc/server/bot/default/waypoints.qc
Fix waypoints for warpzones with oblique or horizontal warp plane
[xonotic/xonotic-data.pk3dir.git] / qcsrc / server / bot / default / waypoints.qc
index c8a958ddbd0f2a0fca0cf8f3e7606d684ea77c7d..c3b67a378fef08ac1a7823ceeb7064f049ef86a3 100644 (file)
 
 #include <common/constants.qh>
 #include <common/net_linked.qh>
+#include <common/physics/player.qh>
 
 #include <lib/warpzone/common.qh>
 #include <lib/warpzone/util_server.qh>
 
+.entity spawnpointmodel;
+void waypoint_unreachable(entity pl)
+{
+       IL_EACH(g_waypoints, true,
+       {
+               it.colormod = '0.5 0.5 0.5';
+               it.effects &= ~(EF_NODEPTHTEST | EF_RED | EF_BLUE);
+       });
+
+       entity e2 = navigation_findnearestwaypoint(pl, false);
+       if(!e2)
+       {
+               LOG_INFOF("Can't find any waypoint nearby\n");
+               return;
+       }
+
+       navigation_markroutes(pl, e2);
+
+       int j = 0;
+       int m = 0;
+       IL_EACH(g_waypoints, it.wpcost >= 10000000,
+       {
+               LOG_INFO("unreachable: ", etos(it), " ", vtos(it.origin), "\n");
+               it.colormod_z = 8;
+               it.effects |= EF_NODEPTHTEST | EF_BLUE;
+               j++;
+               m++;
+       });
+       if (j) LOG_INFOF("%d waypoints cannot be reached from here in any way (marked with blue light)\n", j);
+       navigation_markroutes_inverted(e2);
+
+       j = 0;
+       IL_EACH(g_waypoints, it.wpcost >= 10000000,
+       {
+               LOG_INFO("cannot reach me: ", etos(it), " ", vtos(it.origin), "\n");
+               it.colormod_x = 8;
+               if (!(it.effects & EF_NODEPTHTEST))  // not already reported before
+                       m++;
+               it.effects |= EF_NODEPTHTEST | EF_RED;
+               j++;
+       });
+       if (j) LOG_INFOF("%d waypoints cannot walk to here in any way (marked with red light)\n", j);
+       if (m) LOG_INFOF("%d waypoints have been marked total\n", m);
+
+       j = 0;
+       IL_EACH(g_spawnpoints, true,
+       {
+               if (navigation_findnearestwaypoint(it, false))
+               {
+                       if(it.spawnpointmodel)
+                       {
+                               delete(it.spawnpointmodel);
+                               it.spawnpointmodel = NULL;
+                       }
+               }
+               else
+               {
+                       if(!it.spawnpointmodel)
+                       {
+                               tracebox(it.origin, PL_MIN_CONST, PL_MAX_CONST, it.origin - '0 0 512', MOVE_NOMONSTERS, NULL);
+                               entity e = new(spawnpointmodel);
+                               vector org = trace_endpos + eZ;
+                               setorigin(e, org);
+                               e.solid = SOLID_TRIGGER;
+                               it.spawnpointmodel = e;
+                       }
+                       LOG_INFO("spawn without waypoint: ", etos(it), " ", vtos(it.origin), "\n");
+                       it.spawnpointmodel.effects |= EF_NODEPTHTEST;
+                       _setmodel(it.spawnpointmodel, pl.model);
+                       it.spawnpointmodel.frame = pl.frame;
+                       it.spawnpointmodel.skin = pl.skin;
+                       it.spawnpointmodel.colormap = pl.colormap;
+                       it.spawnpointmodel.colormod = pl.colormod;
+                       it.spawnpointmodel.glowmod = pl.glowmod;
+                       setsize(it.spawnpointmodel, PL_MIN_CONST, PL_MAX_CONST);
+                       j++;
+               }
+       });
+       if (j) LOG_INFOF("%d spawnpoints have no nearest waypoint (marked by player model)\n", j);
+
+       j = 0;
+       IL_EACH(g_items, true,
+       {
+               it.effects &= ~(EF_NODEPTHTEST | EF_RED | EF_BLUE);
+               it.colormod = '0.5 0.5 0.5';
+       });
+       IL_EACH(g_items, true,
+       {
+               if (navigation_findnearestwaypoint(it, false))
+                       continue;
+               LOG_INFO("item without waypoint: ", etos(it), " ", vtos(it.origin), "\n");
+               it.effects |= EF_NODEPTHTEST | EF_RED;
+               it.colormod_x = 8;
+               j++;
+       });
+       if (j) LOG_INFOF("%d items have no nearest waypoint and cannot be walked away from (marked with red light)\n", j);
+
+       j = 0;
+       IL_EACH(g_items, true,
+       {
+               if (navigation_findnearestwaypoint(it, true))
+                       continue;
+               LOG_INFO("item without waypoint: ", etos(it), " ", vtos(it.origin), "\n");
+               it.effects |= EF_NODEPTHTEST | EF_BLUE;
+               it.colormod_z = 8;
+               j++;
+       });
+       if (j) LOG_INFOF("%d items have no nearest waypoint and cannot be walked to (marked with blue light)\n", j);
+}
+
+vector waypoint_getSymmetricalOrigin(vector org, int ctf_flags)
+{
+       vector new_org = org;
+       if (fabs(autocvar_g_waypointeditor_symmetrical) == 1)
+       {
+               vector map_center = havocbot_middlepoint;
+               if (autocvar_g_waypointeditor_symmetrical == -1)
+                       map_center = autocvar_g_waypointeditor_symmetrical_origin;
+
+               new_org = Rotate(org - map_center, 360 * DEG2RAD / ctf_flags) + map_center;
+       }
+       else if (fabs(autocvar_g_waypointeditor_symmetrical) == 2)
+       {
+               float m = havocbot_symmetryaxis_equation.x;
+               float q = havocbot_symmetryaxis_equation.y;
+               if (autocvar_g_waypointeditor_symmetrical == -2)
+               {
+                       m = autocvar_g_waypointeditor_symmetrical_axis.x;
+                       q = autocvar_g_waypointeditor_symmetrical_axis.y;
+               }
+
+               new_org.x = (1 / (1 + m*m)) * ((1 - m*m) * org.x + 2 * m * org.y - 2 * m * q);
+               new_org.y = (1 / (1 + m*m)) * (2 * m * org.x + (m*m - 1) * org.y + 2 * q);
+       }
+       new_org.z = org.z;
+       return new_org;
+}
+
 void waypoint_setupmodel(entity wp)
 {
        if (autocvar_g_waypointeditor)
@@ -31,6 +170,8 @@ void waypoint_setupmodel(entity wp)
                        wp.colormod = '1 0 0';
                else if (wp.wpflags & WAYPOINTFLAG_GENERATED)
                        wp.colormod = '1 1 0';
+               else if (wp.wphardwired)
+                       wp.colormod = '0.5 0 1';
                else
                        wp.colormod = '1 1 1';
        }
@@ -45,7 +186,13 @@ entity waypoint_spawn(vector m1, vector m2, float f)
 {
        if(!(f & WAYPOINTFLAG_PERSONAL))
        {
-               IL_EACH(g_waypoints, boxesoverlap(m1, m2, it.absmin, it.absmax),
+               vector em1 = m1, em2 = m2;
+               if (!(f & WAYPOINTFLAG_GENERATED) && m1 == m2)
+               {
+                       em1 = m1 - '8 8 8';
+                       em2 = m2 + '8 8 8';
+               }
+               IL_EACH(g_waypoints, boxesoverlap(em1, em2, it.absmin, it.absmax),
                {
                        return it;
                });
@@ -76,7 +223,7 @@ entity waypoint_spawn(vector m1, vector m2, float f)
                        {
                                if(autocvar_developer)
                                {
-                                       LOG_INFO("A generated waypoint is stuck in solid at ", vtos(w.origin), "\n");
+                                       LOG_INFO("A generated waypoint is stuck in solid at ", vtos(w.origin));
                                        backtrace("Waypoint stuck");
                                }
                        }
@@ -92,6 +239,120 @@ entity waypoint_spawn(vector m1, vector m2, float f)
        return w;
 }
 
+void waypoint_spawn_fromeditor(entity pl)
+{
+       entity e;
+       vector org = pl.origin;
+       int ctf_flags = havocbot_symmetryaxis_equation.z;
+       bool sym = ((autocvar_g_waypointeditor_symmetrical > 0 && ctf_flags >= 2)
+                  || (autocvar_g_waypointeditor_symmetrical < 0));
+       int order = ctf_flags;
+       if(autocvar_g_waypointeditor_symmetrical_order >= 2)
+       {
+               order = autocvar_g_waypointeditor_symmetrical_order;
+               ctf_flags = order;
+       }
+
+       if(!PHYS_INPUT_BUTTON_CROUCH(pl))
+       {
+               // snap waypoint to item's origin if close enough
+               IL_EACH(g_items, true,
+               {
+                       vector item_org = (it.absmin + it.absmax) * 0.5;
+                       item_org.z = it.absmin.z - PL_MIN_CONST.z;
+                       if(vlen(item_org - org) < 30)
+                       {
+                               org = item_org;
+                               break;
+                       }
+               });
+       }
+
+       LABEL(add_wp);
+       e = waypoint_spawn(org, org, 0);
+       if(!e)
+       {
+               LOG_INFOF("Couldn't spawn waypoint at %v\n", org);
+               return;
+       }
+       waypoint_schedulerelink(e);
+       bprint(strcat("Waypoint spawned at ", vtos(e.origin), "\n"));
+       if(sym)
+       {
+               org = waypoint_getSymmetricalOrigin(e.origin, ctf_flags);
+               if (vdist(org - pl.origin, >, 32))
+               {
+                       if(order > 2)
+                               order--;
+                       else
+                               sym = false;
+                       goto add_wp;
+               }
+       }
+}
+
+void waypoint_remove(entity wp)
+{
+       // tell all waypoints linked to wp that they need to relink
+       IL_EACH(g_waypoints, it != wp,
+       {
+               if (waypoint_islinked(it, wp))
+                       waypoint_removelink(it, wp);
+       });
+       delete(wp);
+}
+
+void waypoint_remove_fromeditor(entity pl)
+{
+       entity e = navigation_findnearestwaypoint(pl, false);
+
+       int ctf_flags = havocbot_symmetryaxis_equation.z;
+       bool sym = ((autocvar_g_waypointeditor_symmetrical > 0 && ctf_flags >= 2)
+                  || (autocvar_g_waypointeditor_symmetrical < 0));
+       int order = ctf_flags;
+       if(autocvar_g_waypointeditor_symmetrical_order >= 2)
+       {
+               order = autocvar_g_waypointeditor_symmetrical_order;
+               ctf_flags = order;
+       }
+
+       LABEL(remove_wp);
+       if (!e) return;
+       if (e.wpflags & WAYPOINTFLAG_GENERATED) return;
+
+       if (e.wphardwired)
+       {
+               LOG_INFO("^1Warning: ^7Removal of hardwired waypoints is not allowed in the editor. Please remove links from/to this waypoint (", vtos(e.origin), ") by hand from maps/", mapname, ".waypoints.hardwired\n");
+               return;
+       }
+
+       entity wp_sym = NULL;
+       if (sym)
+       {
+               vector org = waypoint_getSymmetricalOrigin(e.origin, ctf_flags);
+               FOREACH_ENTITY_CLASS("waypoint", !(it.wpflags & WAYPOINTFLAG_GENERATED), {
+                       if(vdist(org - it.origin, <, 3))
+                       {
+                               wp_sym = it;
+                               break;
+                       }
+               });
+       }
+
+       bprint(strcat("Waypoint removed at ", vtos(e.origin), "\n"));
+       waypoint_remove(e);
+
+       if (sym && wp_sym)
+       {
+               e = wp_sym;
+               if(order > 2)
+                       order--;
+               else
+                       sym = false;
+               goto remove_wp;
+       }
+}
+
 void waypoint_removelink(entity from, entity to)
 {
        if (from == to || (from.wpflags & WAYPOINTFLAG_NORELINK))
@@ -145,41 +406,113 @@ bool waypoint_islinked(entity from, entity to)
        return false;
 }
 
-// add a new link to the spawnfunc_waypoint, replacing the furthest link it already has
-void waypoint_addlink(entity from, entity to)
+void waypoint_updatecost_foralllinks()
 {
-       float c;
+       IL_EACH(g_waypoints, !(it.wpflags & WAYPOINTFLAG_TELEPORT),
+       {
+               if(it.wp00) it.wp00mincost = waypoint_getlinkcost(it, it.wp00);
+               if(it.wp01) it.wp01mincost = waypoint_getlinkcost(it, it.wp01);
+               if(it.wp02) it.wp02mincost = waypoint_getlinkcost(it, it.wp02);
+               if(it.wp03) it.wp03mincost = waypoint_getlinkcost(it, it.wp03);
+               if(it.wp04) it.wp04mincost = waypoint_getlinkcost(it, it.wp04);
+               if(it.wp05) it.wp05mincost = waypoint_getlinkcost(it, it.wp05);
+               if(it.wp06) it.wp06mincost = waypoint_getlinkcost(it, it.wp06);
+               if(it.wp07) it.wp07mincost = waypoint_getlinkcost(it, it.wp07);
+               if(it.wp08) it.wp08mincost = waypoint_getlinkcost(it, it.wp08);
+               if(it.wp09) it.wp09mincost = waypoint_getlinkcost(it, it.wp09);
+               if(it.wp10) it.wp10mincost = waypoint_getlinkcost(it, it.wp10);
+               if(it.wp11) it.wp11mincost = waypoint_getlinkcost(it, it.wp11);
+               if(it.wp12) it.wp12mincost = waypoint_getlinkcost(it, it.wp12);
+               if(it.wp13) it.wp13mincost = waypoint_getlinkcost(it, it.wp13);
+               if(it.wp14) it.wp14mincost = waypoint_getlinkcost(it, it.wp14);
+               if(it.wp15) it.wp15mincost = waypoint_getlinkcost(it, it.wp15);
+               if(it.wp16) it.wp16mincost = waypoint_getlinkcost(it, it.wp16);
+               if(it.wp17) it.wp17mincost = waypoint_getlinkcost(it, it.wp17);
+               if(it.wp18) it.wp18mincost = waypoint_getlinkcost(it, it.wp18);
+               if(it.wp19) it.wp19mincost = waypoint_getlinkcost(it, it.wp19);
+               if(it.wp20) it.wp20mincost = waypoint_getlinkcost(it, it.wp20);
+               if(it.wp21) it.wp21mincost = waypoint_getlinkcost(it, it.wp21);
+               if(it.wp22) it.wp22mincost = waypoint_getlinkcost(it, it.wp22);
+               if(it.wp23) it.wp23mincost = waypoint_getlinkcost(it, it.wp23);
+               if(it.wp24) it.wp24mincost = waypoint_getlinkcost(it, it.wp24);
+               if(it.wp25) it.wp25mincost = waypoint_getlinkcost(it, it.wp25);
+               if(it.wp26) it.wp26mincost = waypoint_getlinkcost(it, it.wp26);
+               if(it.wp27) it.wp27mincost = waypoint_getlinkcost(it, it.wp27);
+               if(it.wp28) it.wp28mincost = waypoint_getlinkcost(it, it.wp28);
+               if(it.wp29) it.wp29mincost = waypoint_getlinkcost(it, it.wp29);
+               if(it.wp30) it.wp30mincost = waypoint_getlinkcost(it, it.wp30);
+               if(it.wp31) it.wp31mincost = waypoint_getlinkcost(it, it.wp31);
+       });
+}
 
-       if (from == to)
-               return;
-       if (from.wpflags & WAYPOINTFLAG_NORELINK)
-               return;
+float waypoint_getlinearcost(float dist)
+{
+       if(skill >= autocvar_bot_ai_bunnyhop_skilloffset)
+               return dist / (autocvar_sv_maxspeed * 1.25);
+       return dist / autocvar_sv_maxspeed;
+}
+float waypoint_getlinearcost_underwater(float dist)
+{
+       // NOTE: this value is hardcoded on the engine too, see SV_WaterMove
+       return dist / (autocvar_sv_maxspeed * 0.7);
+}
 
-       if (waypoint_islinked(from, to))
-               return;
+float waypoint_gettravelcost(vector from, vector to, entity from_ent, entity to_ent)
+{
+       bool submerged_from = navigation_check_submerged_state(from_ent, from);
+       bool submerged_to = navigation_check_submerged_state(to_ent, to);
+
+       if (submerged_from && submerged_to)
+               return waypoint_getlinearcost_underwater(vlen(to - from));
+
+       float c = waypoint_getlinearcost(vlen(to - from));
 
-       if (to.wpisbox || from.wpisbox)
+       float height = from.z - to.z;
+       if(height > jumpheight_vec.z && autocvar_sv_gravity > 0)
        {
-               // if either is a box we have to find the nearest points on them to
-               // calculate the distance properly
-               vector v1, v2, m1, m2;
-               v1 = from.origin;
-               m1 = to.absmin;
-               m2 = to.absmax;
-               v1_x = bound(m1_x, v1_x, m2_x);
-               v1_y = bound(m1_y, v1_y, m2_y);
-               v1_z = bound(m1_z, v1_z, m2_z);
-               v2 = to.origin;
-               m1 = from.absmin;
-               m2 = from.absmax;
-               v2_x = bound(m1_x, v2_x, m2_x);
-               v2_y = bound(m1_y, v2_y, m2_y);
-               v2_z = bound(m1_z, v2_z, m2_z);
-               v2 = to.origin;
-               c = vlen(v2 - v1);
+               float height_cost = sqrt(height / (autocvar_sv_gravity / 2));
+               c = waypoint_getlinearcost(vlen(vec2(to - from))); // xy distance cost
+               if(height_cost > c)
+                       c = height_cost;
        }
-       else
-               c = vlen(to.origin - from.origin);
+
+       if (submerged_from || submerged_to)
+               return (c + waypoint_getlinearcost_underwater(vlen(to - from))) / 2;
+       return c;
+}
+
+float waypoint_getlinkcost(entity from, entity to)
+{
+       vector v1 = from.origin;
+       vector v2 = to.origin;
+       if (from.wpisbox)
+       {
+               vector m1 = from.absmin, m2 = from.absmax;
+               v1.x = bound(m1.x, v2.x, m2.x);
+               v1.y = bound(m1.y, v2.y, m2.y);
+               v1.z = bound(m1.z, v2.z, m2.z);
+       }
+       if (to.wpisbox)
+       {
+               vector m1 = to.absmin, m2 = to.absmax;
+               v2.x = bound(m1.x, v1.x, m2.x);
+               v2.y = bound(m1.y, v1.y, m2.y);
+               v2.z = bound(m1.z, v1.z, m2.z);
+       }
+       return waypoint_gettravelcost(v1, v2, from, to);
+}
+
+// add a new link to the spawnfunc_waypoint, replacing the furthest link it already has
+// if c == -1 automatically determine cost of the link
+void waypoint_addlink_customcost(entity from, entity to, float c)
+{
+       if (from == to || waypoint_islinked(from, to))
+               return;
+       if (c == -1 && (from.wpflags & WAYPOINTFLAG_NORELINK))
+               return;
+
+       if(c == -1)
+               c = waypoint_getlinkcost(from, to);
 
        if (from.wp31mincost < c) return;
        if (from.wp30mincost < c) {from.wp31 = to;from.wp31mincost = c;return;} from.wp31 = from.wp30;from.wp31mincost = from.wp30mincost;
@@ -216,20 +549,24 @@ void waypoint_addlink(entity from, entity to)
        from.wp00 = to;from.wp00mincost = c;return;
 }
 
+void waypoint_addlink(entity from, entity to)
+{
+       waypoint_addlink_customcost(from, to, -1);
+}
+
 // relink this spawnfunc_waypoint
 // (precompile a list of all reachable waypoints from this spawnfunc_waypoint)
 // (SLOW!)
 void waypoint_think(entity this)
 {
-       vector sv, sm1, sm2, ev, em1, em2, dv;
+       vector sv = '0 0 0', sv2 = '0 0 0', ev = '0 0 0', ev2 = '0 0 0', dv;
+       float sv2_height = 0, ev2_height = 0;
 
        bot_calculate_stepheightvec();
 
        bot_navigation_movemode = ((autocvar_bot_navigation_ignoreplayers) ? MOVE_NOMONSTERS : MOVE_NORMAL);
 
        //dprint("waypoint_think wpisbox = ", ftos(this.wpisbox), "\n");
-       sm1 = this.origin + this.mins;
-       sm2 = this.origin + this.maxs;
        IL_EACH(g_waypoints, this != it,
        {
                if (boxesoverlap(this.absmin, this.absmax, it.absmin, it.absmax))
@@ -245,16 +582,10 @@ void waypoint_think(entity this)
                                ++relink_pvsculled;
                                continue;
                        }
-                       sv = it.origin;
-                       sv.x = bound(sm1_x, sv.x, sm2_x);
-                       sv.y = bound(sm1_y, sv.y, sm2_y);
-                       sv.z = bound(sm1_z, sv.z, sm2_z);
-                       ev = this.origin;
-                       em1 = it.origin + it.mins;
-                       em2 = it.origin + it.maxs;
-                       ev.x = bound(em1_x, ev.x, em2_x);
-                       ev.y = bound(em1_y, ev.y, em2_y);
-                       ev.z = bound(em1_z, ev.z, em2_z);
+
+                       SET_TRACEWALK_DESTCOORDS_2(this, it.origin, sv, sv2, sv2_height);
+                       SET_TRACEWALK_DESTCOORDS_2(it, this.origin, ev, ev2, ev2_height);
+
                        dv = ev - sv;
                        dv.z = 0;
                        if(vdist(dv, >=, 1050)) // max search distance in XY
@@ -262,35 +593,30 @@ void waypoint_think(entity this)
                                ++relink_lengthculled;
                                continue;
                        }
+
                        navigation_testtracewalk = 0;
-                       if (!this.wpisbox)
-                       {
-                               tracebox(sv - PL_MIN_CONST.z * '0 0 1', PL_MIN_CONST, PL_MAX_CONST, sv, false, this);
-                               if (!trace_startsolid)
-                               {
-                                       //dprint("sv deviation", vtos(trace_endpos - sv), "\n");
-                                       sv = trace_endpos + '0 0 1';
-                               }
-                       }
-                       if (!it.wpisbox)
-                       {
-                               tracebox(ev - PL_MIN_CONST.z * '0 0 1', PL_MIN_CONST, PL_MAX_CONST, ev, false, it);
-                               if (!trace_startsolid)
-                               {
-                                       //dprint("ev deviation", vtos(trace_endpos - ev), "\n");
-                                       ev = trace_endpos + '0 0 1';
-                               }
-                       }
+
                        //traceline(this.origin, it.origin, false, NULL);
                        //if (trace_fraction == 1)
-                       if (!this.wpisbox && tracewalk(this, sv, PL_MIN_CONST, PL_MAX_CONST, ev, MOVE_NOMONSTERS))
-                               waypoint_addlink(this, it);
-                       else
+                       if (this.wpisbox)
                                relink_walkculled += 0.5;
-                       if (!it.wpisbox && tracewalk(it, ev, PL_MIN_CONST, PL_MAX_CONST, sv, MOVE_NOMONSTERS))
-                               waypoint_addlink(it, this);
                        else
+                       {
+                               if (tracewalk(this, sv, PL_MIN_CONST, PL_MAX_CONST, ev2, ev2_height, MOVE_NOMONSTERS))
+                                       waypoint_addlink(this, it);
+                               else
+                                       relink_walkculled += 0.5;
+                       }
+
+                       if (it.wpisbox)
                                relink_walkculled += 0.5;
+                       else
+                       {
+                               if (tracewalk(it, ev, PL_MIN_CONST, PL_MAX_CONST, sv2, sv2_height, MOVE_NOMONSTERS))
+                                       waypoint_addlink(it, this);
+                               else
+                                       relink_walkculled += 0.5;
+                       }
                }
        });
        navigation_testtracewalk = 0;
@@ -344,25 +670,6 @@ spawnfunc(waypoint)
        //waypoint_schedulerelink(this);
 }
 
-void waypoint_remove(entity wp)
-{
-       // tell all waypoints linked to wp that they need to relink
-       IL_EACH(g_waypoints, it != wp,
-       {
-               if (waypoint_islinked(it, wp))
-                       waypoint_removelink(it, wp);
-       });
-       delete(wp);
-}
-
-void waypoint_removeall()
-{
-       IL_EACH(g_waypoints, true,
-       {
-               delete(it);
-       });
-}
-
 // tell all waypoints to relink
 // actually this is useful only to update relink_* stats
 void waypoint_schedulerelinkall()
@@ -376,7 +683,7 @@ void waypoint_schedulerelinkall()
 }
 
 // Load waypoint links from file
-float waypoint_load_links()
+bool waypoint_load_links()
 {
        string filename, s;
        float file, tokens, c = 0, found;
@@ -394,8 +701,27 @@ float waypoint_load_links()
                return false;
        }
 
+       bool parse_comments = true;
+       float ver = 0;
+
        while ((s = fgets(file)))
        {
+               if(parse_comments)
+               {
+                       if(substring(s, 0, 2) == "//")
+                       {
+                               if(substring(s, 2, 17) == "WAYPOINT_VERSION ")
+                                       ver = stof(substring(s, 19, -1));
+                               continue;
+                       }
+                       else
+                       {
+                               if(ver < WAYPOINT_VERSION)
+                                       return false;
+                               parse_comments = false;
+                       }
+               }
+
                tokens = tokenizebyseparator(s, "*");
 
                if (tokens!=2)
@@ -518,7 +844,7 @@ void waypoint_load_or_remove_links_hardwired(bool removal_mode)
                        if(!found)
                        {
                                if(!removal_mode)
-                                       LOG_INFO(strcat("NOTICE: Can not find waypoint at ", vtos(wp_from_pos), ". Path skipped\n"));
+                                       LOG_INFO("NOTICE: Can not find waypoint at ", vtos(wp_from_pos), ". Path skipped");
                                continue;
                        }
                }
@@ -540,7 +866,7 @@ void waypoint_load_or_remove_links_hardwired(bool removal_mode)
                if(!found)
                {
                        if(!removal_mode)
-                               LOG_INFO(strcat("NOTICE: Can not find waypoint at ", vtos(wp_to_pos), ". Path skipped\n"));
+                               LOG_INFO("NOTICE: Can not find waypoint at ", vtos(wp_to_pos), ". Path skipped");
                        continue;
                }
 
@@ -554,6 +880,8 @@ void waypoint_load_or_remove_links_hardwired(bool removal_mode)
                waypoint_addlink(wp_from, wp_to);
                wp_from.wphardwired = true;
                wp_to.wphardwired = true;
+               waypoint_setupmodel(wp_from);
+               waypoint_setupmodel(wp_to);
        }
 
        fclose(file);
@@ -562,9 +890,6 @@ void waypoint_load_or_remove_links_hardwired(bool removal_mode)
                LOG_TRACE("loaded ", ftos(c), " waypoint links from maps/", mapname, ".waypoints.hardwired");
 }
 
-void waypoint_load_links_hardwired() { waypoint_load_or_remove_links_hardwired(false); }
-void waypoint_remove_links_hardwired() { waypoint_load_or_remove_links_hardwired(true); }
-
 entity waypoint_get_link(entity w, float i)
 {
        switch(i)
@@ -615,10 +940,12 @@ void waypoint_save_links()
        int file = fopen(filename, FILE_WRITE);
        if (file < 0)
        {
-               LOG_INFOF("waypoint link save to %s failed\n", filename);
+               LOG_INFOF("waypoint link save to %s failed", filename);
                return;
        }
 
+       fputs(file, strcat("//", "WAYPOINT_VERSION ", ftos_decimals(WAYPOINT_VERSION, 2), "\n"));
+
        int c = 0;
        IL_EACH(g_waypoints, true,
        {
@@ -636,7 +963,7 @@ void waypoint_save_links()
        fclose(file);
        botframe_cachedwaypointlinks = true;
 
-       LOG_INFOF("saved %d waypoint links to maps/%s.waypoints.cache\n", c, mapname);
+       LOG_INFOF("saved %d waypoint links to maps/%s.waypoints.cache", c, mapname);
 
        waypoint_load_links_hardwired();
 }
@@ -651,10 +978,16 @@ void waypoint_saveall()
                waypoint_save_links(); // save anyway?
                botframe_loadedforcedlinks = false;
 
-               LOG_INFOF("waypoint links: save to %s failed\n", filename);
+               LOG_INFOF("waypoint links: save to %s failed", filename);
                return;
        }
 
+       // add 3 comments to not break compatibility with older Xonotic versions
+       // (they are read as a waypoint with origin '0 0 0' and flag 0 though)
+       fputs(file, strcat("//", "WAYPOINT_VERSION ", ftos_decimals(WAYPOINT_VERSION, 2), "\n"));
+       fputs(file, strcat("//", "\n"));
+       fputs(file, strcat("//", "\n"));
+
        int c = 0;
        IL_EACH(g_waypoints, true,
        {
@@ -674,7 +1007,7 @@ void waypoint_saveall()
        waypoint_save_links();
        botframe_loadedforcedlinks = false;
 
-       LOG_INFOF("saved %d waypoints to maps/%s.waypoints\n", c, mapname);
+       LOG_INFOF("saved %d waypoints to maps/%s.waypoints", c, mapname);
 }
 
 // load waypoints from file
@@ -688,49 +1021,73 @@ float waypoint_loadall()
        filename = strcat("maps/", mapname);
        filename = strcat(filename, ".waypoints");
        file = fopen(filename, FILE_READ);
-       if (file >= 0)
+
+       bool parse_comments = true;
+       float ver = 0;
+
+       if (file < 0)
+       {
+               LOG_TRACE("waypoint load from ", filename, " failed");
+               return 0;
+       }
+
+       while ((s = fgets(file)))
        {
-               while ((s = fgets(file)))
+               if(parse_comments)
                {
-                       m1 = stov(s);
-                       s = fgets(file);
-                       if (!s)
-                               break;
-                       m2 = stov(s);
-                       s = fgets(file);
-                       if (!s)
-                               break;
-                       fl = stof(s);
-                       waypoint_spawn(m1, m2, fl);
-                       if (m1 == m2)
-                               cwp = cwp + 1;
+                       if(substring(s, 0, 2) == "//")
+                       {
+                               if(substring(s, 2, 17) == "WAYPOINT_VERSION ")
+                                       ver = stof(substring(s, 19, -1));
+                               continue;
+                       }
                        else
-                               cwb = cwb + 1;
+                       {
+                               if(floor(ver) < floor(WAYPOINT_VERSION))
+                                       LOG_TRACE("waypoints for this map are outdated");
+                               parse_comments = false;
+                       }
                }
-               fclose(file);
-               LOG_TRACE("loaded ", ftos(cwp), " waypoints and ", ftos(cwb), " wayboxes from maps/", mapname, ".waypoints");
-       }
-       else
-       {
-               LOG_TRACE("waypoint load from ", filename, " failed");
+               m1 = stov(s);
+               s = fgets(file);
+               if (!s)
+                       break;
+               m2 = stov(s);
+               s = fgets(file);
+               if (!s)
+                       break;
+               fl = stof(s);
+               waypoint_spawn(m1, m2, fl);
+               if (m1 == m2)
+                       cwp = cwp + 1;
+               else
+                       cwb = cwb + 1;
        }
+       fclose(file);
+       LOG_TRACE("loaded ", ftos(cwp), " waypoints and ", ftos(cwb), " wayboxes from maps/", mapname, ".waypoints");
+
        return cwp + cwb;
 }
 
-vector waypoint_fixorigin(vector position)
+#define waypoint_fixorigin(position, tracetest_ent) \
+       waypoint_fixorigin_down_dir(position, tracetest_ent, '0 0 -1')
+
+vector waypoint_fixorigin_down_dir(vector position, entity tracetest_ent, vector down_dir)
 {
-       tracebox(position + '0 0 1' * (1 - PL_MIN_CONST.z), PL_MIN_CONST, PL_MAX_CONST, position + '0 0 -512', MOVE_NOMONSTERS, NULL);
+       tracebox(position + '0 0 1', PL_MIN_CONST, PL_MAX_CONST, position + down_dir * 3000, MOVE_NOMONSTERS, tracetest_ent);
+       if(trace_startsolid)
+               tracebox(position + '0 0 1' * (1 - PL_MIN_CONST.z / 2), PL_MIN_CONST, PL_MAX_CONST, position + down_dir * 3000, MOVE_NOMONSTERS, tracetest_ent);
+       if(trace_startsolid)
+               tracebox(position + '0 0 1' * (1 - PL_MIN_CONST.z), PL_MIN_CONST, PL_MAX_CONST, position + down_dir * 3000, MOVE_NOMONSTERS, tracetest_ent);
        if(trace_fraction < 1)
                position = trace_endpos;
-       //traceline(position, position + '0 0 -512', MOVE_NOMONSTERS, NULL);
-       //print("position is ", ftos(trace_endpos_z - position_z), " above solid\n");
        return position;
 }
 
 void waypoint_spawnforitem_force(entity e, vector org)
 {
        // Fix the waypoint altitude if necessary
-       org = waypoint_fixorigin(org);
+       org = waypoint_fixorigin(org, NULL);
 
        // don't spawn an item spawnfunc_waypoint if it already exists
        IL_EACH(g_waypoints, true,
@@ -764,11 +1121,11 @@ void waypoint_spawnforitem(entity e)
        waypoint_spawnforitem_force(e, e.origin);
 }
 
-void waypoint_spawnforteleporter_boxes(entity e, vector org1, vector org2, vector destination1, vector destination2, float timetaken)
+void waypoint_spawnforteleporter_boxes(entity e, int teleport_flag, vector org1, vector org2, vector destination1, vector destination2, float timetaken)
 {
        entity w;
        entity dw;
-       w = waypoint_spawn(org1, org2, WAYPOINTFLAG_GENERATED | WAYPOINTFLAG_TELEPORT | WAYPOINTFLAG_NORELINK);
+       w = waypoint_spawn(org1, org2, WAYPOINTFLAG_GENERATED | teleport_flag | WAYPOINTFLAG_NORELINK);
        dw = waypoint_spawn(destination1, destination2, WAYPOINTFLAG_GENERATED);
        // one way link to the destination
        w.wp00 = dw;
@@ -779,17 +1136,25 @@ void waypoint_spawnforteleporter_boxes(entity e, vector org1, vector org2, vecto
        e.nearestwaypointtimeout = -1;
 }
 
-void waypoint_spawnforteleporter_v(entity e, vector org, vector destination, float timetaken)
+void waypoint_spawnforteleporter_wz(entity e, vector org, vector destination, float timetaken, vector down_dir, entity tracetest_ent)
 {
-       org = waypoint_fixorigin(org);
-       destination = waypoint_fixorigin(destination);
-       waypoint_spawnforteleporter_boxes(e, org, org, destination, destination, timetaken);
+       // warpzones with oblique warp plane rely on down_dir to snap waypoints
+       // to the ground without leaving the warp plane
+       // warpzones with horizontal warp plane (down_dir.x == -1) generate
+       // destination waypoint snapped to the ground (leaving warpzone), source
+       // waypoint in the center of the warp plane
+       if(down_dir.x != -1)
+               org = waypoint_fixorigin_down_dir(org, tracetest_ent, down_dir);
+       if(down_dir.x == -1)
+               down_dir = '0 0 -1';
+       destination = waypoint_fixorigin_down_dir(destination, tracetest_ent, down_dir);
+       waypoint_spawnforteleporter_boxes(e, WAYPOINTFLAG_TELEPORT, org, org, destination, destination, timetaken);
 }
 
-void waypoint_spawnforteleporter(entity e, vector destination, float timetaken)
+void waypoint_spawnforteleporter(entity e, vector destination, float timetaken, entity tracetest_ent)
 {
-       destination = waypoint_fixorigin(destination);
-       waypoint_spawnforteleporter_boxes(e, e.absmin, e.absmax, destination, destination, timetaken);
+       destination = waypoint_fixorigin(destination, tracetest_ent);
+       waypoint_spawnforteleporter_boxes(e, WAYPOINTFLAG_TELEPORT, e.absmin - PL_MAX_CONST + '1 1 1', e.absmax - PL_MIN_CONST + '-1 -1 -1', destination, destination, timetaken);
 }
 
 entity waypoint_spawnpersonal(entity this, vector position)
@@ -799,7 +1164,7 @@ entity waypoint_spawnpersonal(entity this, vector position)
        // drop the waypoint to a proper location:
        //   first move it up by a player height
        //   then move it down to hit the floor with player bbox size
-       position = waypoint_fixorigin(position);
+       position = waypoint_fixorigin(position, this);
 
        w = waypoint_spawn(position, position, WAYPOINTFLAG_GENERATED | WAYPOINTFLAG_PERSONAL);
        w.nearestwaypoint = NULL;
@@ -822,6 +1187,35 @@ void waypoint_showlink(entity wp1, entity wp2, int display_type)
                te_lightning2(NULL, wp1.origin, wp2.origin);
 }
 
+void waypoint_showlinks_to(entity wp, int display_type)
+{
+       IL_EACH(g_waypoints, it != wp,
+       {
+               if (waypoint_islinked(it, wp))
+                       waypoint_showlink(it, wp, display_type);
+       });
+}
+
+void waypoint_showlinks_from(entity wp, int display_type)
+{
+       waypoint_showlink(wp.wp00, wp, display_type); waypoint_showlink(wp.wp16, wp, display_type);
+       waypoint_showlink(wp.wp01, wp, display_type); waypoint_showlink(wp.wp17, wp, display_type);
+       waypoint_showlink(wp.wp02, wp, display_type); waypoint_showlink(wp.wp18, wp, display_type);
+       waypoint_showlink(wp.wp03, wp, display_type); waypoint_showlink(wp.wp19, wp, display_type);
+       waypoint_showlink(wp.wp04, wp, display_type); waypoint_showlink(wp.wp20, wp, display_type);
+       waypoint_showlink(wp.wp05, wp, display_type); waypoint_showlink(wp.wp21, wp, display_type);
+       waypoint_showlink(wp.wp06, wp, display_type); waypoint_showlink(wp.wp22, wp, display_type);
+       waypoint_showlink(wp.wp07, wp, display_type); waypoint_showlink(wp.wp23, wp, display_type);
+       waypoint_showlink(wp.wp08, wp, display_type); waypoint_showlink(wp.wp24, wp, display_type);
+       waypoint_showlink(wp.wp09, wp, display_type); waypoint_showlink(wp.wp25, wp, display_type);
+       waypoint_showlink(wp.wp10, wp, display_type); waypoint_showlink(wp.wp26, wp, display_type);
+       waypoint_showlink(wp.wp11, wp, display_type); waypoint_showlink(wp.wp27, wp, display_type);
+       waypoint_showlink(wp.wp12, wp, display_type); waypoint_showlink(wp.wp28, wp, display_type);
+       waypoint_showlink(wp.wp13, wp, display_type); waypoint_showlink(wp.wp29, wp, display_type);
+       waypoint_showlink(wp.wp14, wp, display_type); waypoint_showlink(wp.wp30, wp, display_type);
+       waypoint_showlink(wp.wp15, wp, display_type); waypoint_showlink(wp.wp31, wp, display_type);
+}
+
 void botframe_showwaypointlinks()
 {
        if (time < botframe_waypointeditorlightningtime)
@@ -844,38 +1238,10 @@ void botframe_showwaypointlinks()
                        if (head)
                        {
                                te_lightning2(NULL, head.origin, it.origin);
-                               waypoint_showlink(head.wp00, head, display_type);
-                               waypoint_showlink(head.wp01, head, display_type);
-                               waypoint_showlink(head.wp02, head, display_type);
-                               waypoint_showlink(head.wp03, head, display_type);
-                               waypoint_showlink(head.wp04, head, display_type);
-                               waypoint_showlink(head.wp05, head, display_type);
-                               waypoint_showlink(head.wp06, head, display_type);
-                               waypoint_showlink(head.wp07, head, display_type);
-                               waypoint_showlink(head.wp08, head, display_type);
-                               waypoint_showlink(head.wp09, head, display_type);
-                               waypoint_showlink(head.wp10, head, display_type);
-                               waypoint_showlink(head.wp11, head, display_type);
-                               waypoint_showlink(head.wp12, head, display_type);
-                               waypoint_showlink(head.wp13, head, display_type);
-                               waypoint_showlink(head.wp14, head, display_type);
-                               waypoint_showlink(head.wp15, head, display_type);
-                               waypoint_showlink(head.wp16, head, display_type);
-                               waypoint_showlink(head.wp17, head, display_type);
-                               waypoint_showlink(head.wp18, head, display_type);
-                               waypoint_showlink(head.wp19, head, display_type);
-                               waypoint_showlink(head.wp20, head, display_type);
-                               waypoint_showlink(head.wp21, head, display_type);
-                               waypoint_showlink(head.wp22, head, display_type);
-                               waypoint_showlink(head.wp23, head, display_type);
-                               waypoint_showlink(head.wp24, head, display_type);
-                               waypoint_showlink(head.wp25, head, display_type);
-                               waypoint_showlink(head.wp26, head, display_type);
-                               waypoint_showlink(head.wp27, head, display_type);
-                               waypoint_showlink(head.wp28, head, display_type);
-                               waypoint_showlink(head.wp29, head, display_type);
-                               waypoint_showlink(head.wp30, head, display_type);
-                               waypoint_showlink(head.wp31, head, display_type);
+                               if(PHYS_INPUT_BUTTON_CROUCH(it))
+                                       waypoint_showlinks_to(head, display_type);
+                               else
+                                       waypoint_showlinks_from(head, display_type);
                        }
                }
        });
@@ -927,7 +1293,7 @@ float botframe_autowaypoints_fix_from(entity p, float walkfromwp, entity wp, .en
 
                // if wp -> porg, then OK
                float maxdist;
-               if(navigation_waypoint_will_link(wp.origin, porg, p, walkfromwp, 1050))
+               if(navigation_waypoint_will_link(wp.origin, porg, p, porg, 0, wp.origin, 0, walkfromwp, 1050))
                {
                        // we may find a better one
                        maxdist = vlen(wp.origin - porg);
@@ -943,8 +1309,8 @@ float botframe_autowaypoints_fix_from(entity p, float walkfromwp, entity wp, .en
                {
                        float d = vlen(wp.origin - it.origin) + vlen(it.origin - porg);
                        if(d < bestdist)
-                       if(navigation_waypoint_will_link(wp.origin, it.origin, p, walkfromwp, 1050))
-                       if(navigation_waypoint_will_link(it.origin, porg, p, walkfromwp, 1050))
+                       if(navigation_waypoint_will_link(wp.origin, it.origin, p, it.origin, 0, wp.origin, 0, walkfromwp, 1050))
+                       if(navigation_waypoint_will_link(it.origin, porg, p, porg, 0, it.origin, 0, walkfromwp, 1050))
                        {
                                bestdist = d;
                                p.(fld) = it;
@@ -952,7 +1318,7 @@ float botframe_autowaypoints_fix_from(entity p, float walkfromwp, entity wp, .en
                });
                if(bestdist < maxdist)
                {
-                       LOG_INFO("update chain to new nearest WP ", etos(p.(fld)), "\n");
+                       LOG_INFO("update chain to new nearest WP ", etos(p.(fld)));
                        return 0;
                }
 
@@ -998,7 +1364,7 @@ float botframe_autowaypoints_fix_from(entity p, float walkfromwp, entity wp, .en
 
                if(wp)
                {
-                       if(!navigation_waypoint_will_link(wp.origin, o, p, walkfromwp, 1050))
+                       if(!navigation_waypoint_will_link(wp.origin, o, p, o, 0, wp.origin, 0, walkfromwp, 1050))
                        {
                                // we cannot walk from wp.origin to o
                                // get closer to tmax
@@ -1024,14 +1390,14 @@ float botframe_autowaypoints_fix_from(entity p, float walkfromwp, entity wp, .en
                // if we get here, o is valid regarding waypoints
                // check if o is connected right to the player
                // we break if it succeeds, as that means o is a good waypoint location
-               if(navigation_waypoint_will_link(o, porg, p, walkfromwp, 1050))
+               if(navigation_waypoint_will_link(o, porg, p, porg, 0, o, 0, walkfromwp, 1050))
                        break;
 
                // o is no good, we need to get closer to the player
                tmax = t;
        }
 
-       LOG_INFO("spawning a waypoint for connecting to ", etos(wp), "\n");
+       LOG_INFO("spawning a waypoint for connecting to ", etos(wp));
        botframe_autowaypoints_createwp(o, p, fld, 0);
        return 1;
 }
@@ -1047,7 +1413,7 @@ void botframe_autowaypoints_fix(entity p, float walkfromwp, .entity fld)
        if(r != -1)
                return;
 
-       LOG_INFO("emergency: got no good nearby WP to build a link from, starting a new chain\n");
+       LOG_INFO("emergency: got no good nearby WP to build a link from, starting a new chain");
        if(!botframe_autowaypoints_fixdown(p.origin))
                return; // shouldn't happen, caught above
        botframe_autowaypoints_createwp(trace_endpos, p, fld, WAYPOINTFLAG_PROTECTED);
@@ -1071,6 +1437,8 @@ void botframe_deleteuselesswaypoints()
                        it.wpflags |= WAYPOINTFLAG_USEFUL;
                if (it.wpflags & WAYPOINTFLAG_TELEPORT)
                        it.wpflags |= WAYPOINTFLAG_USEFUL;
+               if (it.wpflags & WAYPOINTFLAG_LADDER)
+                       it.wpflags |= WAYPOINTFLAG_USEFUL;
                if (it.wpflags & WAYPOINTFLAG_PROTECTED)
                        it.wpflags |= WAYPOINTFLAG_USEFUL;
                // b) WP is closest WP for an item/spawnpoint/other entity
@@ -1119,7 +1487,7 @@ LABEL(next)
 
        IL_EACH(g_waypoints, !(it.wpflags & (WAYPOINTFLAG_USEFUL | WAYPOINTFLAG_DEAD_END)),
        {
-               LOG_INFOF("Removed a waypoint at %v. Try again for more!\n", it.origin);
+               LOG_INFOF("Removed a waypoint at %v. Try again for more!", it.origin);
                te_explosion(it.origin);
                waypoint_remove(it);
                break;