+// shorten path by removing intermediate goals
+bool navigation_shortenpath(entity this)
+{
+ if (!this.goalstack01 || wasfreed(this.goalstack01))
+ return false;
+ if (this.bot_tracewalk_time > time)
+ return false;
+ this.bot_tracewalk_time = max(time, this.bot_tracewalk_time) + 0.25;
+
+ bool cut_allowed = false;
+ entity next = this.goalentity;
+ // evaluate whether bot can discard current route and chase directly a player, trying to
+ // keep waypoint route as long as possible, as it is safer and faster (bot can bunnyhop)
+ if (IS_MOVABLE(next))
+ {
+ set_tracewalk_dest(next, this.origin, true);
+ if (vdist(this.origin - tracewalk_dest, <, 200))
+ cut_allowed = true;
+ else if (vdist(tracewalk_dest - this.origin, <, MAX_CHASE_DISTANCE)
+ && vdist(tracewalk_dest - this.goalcurrent.origin, >, 200)
+ && vdist(this.origin - this.goalcurrent.origin, >, 100)
+ && checkpvs(this.origin + this.view_ofs, next))
+ {
+ if (vlen2(next.origin - this.origin) < vlen2(this.goalcurrent.origin - this.origin))
+ cut_allowed = true;
+ else
+ {
+ vector deviation = vectoangles(this.goalcurrent.origin - this.origin) - vectoangles(next.origin - this.origin);
+ while (deviation.y < -180) deviation.y += 360;
+ while (deviation.y > 180) deviation.y -= 360;
+ if (fabs(deviation.y) > 25)
+ cut_allowed = true;
+ }
+ }
+ if (cut_allowed)
+ {
+ if (trace_ent == this || tracewalk(this, this.origin, this.mins, this.maxs,
+ tracewalk_dest, tracewalk_dest_height, bot_navigation_movemode))
+ {
+ LOG_DEBUG("path optimized for ", this.netname, ", route cleared");
+ do
+ {
+ navigation_poproute(this);
+ }
+ while (this.goalcurrent != next);
+ return true;
+ }
+ return false;
+ }
+ }
+
+ next = this.goalstack01;
+ // if for some reason the bot is closer to the next goal, pop the current one
+ if (!IS_MOVABLE(next) // already checked in the previous case
+ && vlen2(this.goalcurrent.origin - next.origin) > vlen2(next.origin - this.origin)
+ && checkpvs(this.origin + this.view_ofs, next))
+ {
+ set_tracewalk_dest(next, this.origin, true);
+ cut_allowed = true;
+ }
+
+ if (cut_allowed)
+ {
+ if (trace_ent == this || tracewalk(this, this.origin, this.mins, this.maxs,
+ tracewalk_dest, tracewalk_dest_height, bot_navigation_movemode))
+ {
+ LOG_DEBUG("path optimized for ", this.netname, ", removed a goal from the queue");
+ navigation_poproute(this);
+ return true;
+ }
+ }
+ return false;
+}
+