+// returns point of ent closer to org
+vector get_closer_dest(entity ent, vector org)
+{
+ vector dest = '0 0 0';
+ if ((ent.classname != "waypoint") || ent.wpisbox)
+ {
+ vector wm1 = ent.origin + ent.mins;
+ vector wm2 = ent.origin + ent.maxs;
+ dest.x = bound(wm1.x, org.x, wm2.x);
+ dest.y = bound(wm1.y, org.y, wm2.y);
+ dest.z = bound(wm1.z, org.z, wm2.z);
+ }
+ else
+ dest = ent.origin;
+ return dest;
+}
+
+void set_tracewalk_dest(entity ent, vector org, bool fix_player_dest)
+{
+ if ((ent.classname != "waypoint") || ent.wpisbox)
+ {
+ vector wm1 = ent.origin + ent.mins;
+ vector wm2 = ent.origin + ent.maxs;
+ if (IS_PLAYER(ent) || IS_MONSTER(ent))
+ {
+ // move destination point out of player bbox otherwise tracebox always fails
+ // (if bot_navigation_ignoreplayers is false)
+ wm1 += vec2(PL_MIN_CONST) + '-1 -1 0';
+ wm2 += vec2(PL_MAX_CONST) + '1 1 0';
+ }
+ // set destination point to x and y coords of ent that are closer to org
+ // z coord is set to ent's min height
+ tracewalk_dest.x = bound(wm1.x, org.x, wm2.x);
+ tracewalk_dest.y = bound(wm1.y, org.y, wm2.y);
+ if ((IS_PLAYER(ent) || IS_MONSTER(ent))
+ && org.x == tracewalk_dest.x && org.y == tracewalk_dest.y && org.z > tracewalk_dest.z)
+ {
+ tracewalk_dest.z = wm2.z - PL_MIN_CONST.z;
+ tracewalk_dest_height = 0;
+ fix_player_dest = false;
+ }
+ else
+ {
+ tracewalk_dest.z = wm1.z;
+ tracewalk_dest_height = wm2.z - wm1.z;
+ }
+ }
+ else
+ {
+ tracewalk_dest = ent.origin;
+ tracewalk_dest_height = 0;
+ }
+ if (fix_player_dest && IS_PLAYER(ent) && !IS_ONGROUND(ent))
+ {
+ // snap player to the ground
+ if (org.x == tracewalk_dest.x && org.y == tracewalk_dest.y)
+ {
+ // bot is right under the player
+ tracebox(ent.origin, ent.mins, ent.maxs, ent.origin - '0 0 700', MOVE_NORMAL, ent);
+ tracewalk_dest = trace_endpos;
+ tracewalk_dest_height = 0;
+ }
+ else
+ {
+ tracebox(tracewalk_dest, ent.mins, ent.maxs, tracewalk_dest - '0 0 700', MOVE_NORMAL, ent);
+ if (!trace_startsolid && tracewalk_dest.z - trace_endpos.z > 0)
+ {
+ tracewalk_dest_height = tracewalk_dest.z - trace_endpos.z;
+ tracewalk_dest.z = trace_endpos.z;
+ }
+ }
+ }
+}
+
+// returns point of ent closer to org
+vector set_tracewalk_dest_2(entity ent, vector org)
+{
+ vector closer_dest = '0 0 0';
+ if ((ent.classname != "waypoint") || ent.wpisbox)
+ {
+ vector wm1 = ent.origin + ent.mins;
+ vector wm2 = ent.origin + ent.maxs;
+ closer_dest.x = bound(wm1.x, org.x, wm2.x);
+ closer_dest.y = bound(wm1.y, org.y, wm2.y);
+ closer_dest.z = bound(wm1.z, org.z, wm2.z);
+ // set destination point to x and y coords of ent that are closer to org
+ // z coord is set to ent's min height
+ tracewalk_dest.x = closer_dest.x;
+ tracewalk_dest.y = closer_dest.y;
+ tracewalk_dest.z = wm1.z;
+ tracewalk_dest_height = wm2.z - wm1.z; // destination height
+ }
+ else
+ {
+ closer_dest = ent.origin;
+ tracewalk_dest = closer_dest;
+ tracewalk_dest_height = 0;
+ }
+ return closer_dest;
+}
+
+bool navigation_check_submerged_state(entity ent, vector pos)
+{
+ bool submerged;
+ if(IS_PLAYER(ent))
+ submerged = (ent.waterlevel == WATERLEVEL_SUBMERGED);
+ else if(ent.nav_submerged_state != SUBMERGED_UNDEFINED)
+ submerged = (ent.nav_submerged_state == SUBMERGED_YES);
+ else
+ {
+ submerged = SUBMERGED(pos);
+ // NOTE: SUBMERGED check of box waypoint origin may fail even if origin
+ // is actually submerged because often they are inside some solid.
+ // That's why submerged state is saved now that we know current pos is
+ // not stuck in solid (previous tracewalk call to this pos was successfully)
+ if(!ent.navigation_dynamicgoal)
+ ent.nav_submerged_state = (submerged) ? SUBMERGED_YES : SUBMERGED_NO;
+ }
+ return submerged;
+}
+
+bool navigation_checkladders(entity e, vector org, vector m1, vector m2, vector end, vector end2, int movemode)