Please note: this is just my thinking aloud. I really don't want to distract anyone from important work here I just want to keep my progress, or lack thereof out in the open.
Well, I must confess to being somewhat flustered. I don't know if it has anything to do with the map layout or if I'm just not grasping some of the fundamental mechanics of its usage, but attempts on my part to place routes have seemingly failed, repeatedly.
Its not terribly complicated, but having never done it successfully prior to this I can't be entirely sure why it seems not to work. It seems as though the Bots are taking the shortest path to any given objective, regardless of the placement of the Alt_roam actions. In some cases to force them to take a varied path, they would have to go the opposite direction of their goal, then hook around in a wide U-Turn to reach the alternative path - instead, they seem to just go straight there, then head from the objective to the alt_roam or be done with it at having reached the goal.
I've been checking official maps and waypoints for examples but it doesn't seem to be helping. I place the route in the spawn area, make the radius large enough to catch all of the spots where you or bots can drop in, set the /route_action # to the appropriate goal, drop in the actions - set them by team to task 9, (even tried setting them always active), use /route_pathactions # action# action# etc to link the alt_roams to the routes, and they seem to just ignore them. I've placed the alt roams at the start of alternate paths, at the end of them, in the middle - they just don't seem to care.
In fact with the Axis engineers - they were more inventive about reaching the bridge without routes! They would always use the mines until the station doors were blown, then fight through the station (which I thought was pretty dumb) when they were opened. I was hoping to get them to use the mines exclusively or at least in tandem with the opened station doors, but they just used the station exclusively instead. I've rolled back my .nav file to a backup copy three times now, each time trying to get a fresh take on how to make it work to no avail.
I've also tried adding an engineer camp to the footbridge to provide defense against the axis planting dynamite there - the crazy thing is when I simply placed the camp and forgot to link the aim action, the engies used it without fail. When I linked the aim action and tried to alter the action group's and active setting to keep it in use, they started ignoring it completely. I tried setting the action group to -1 and using my aiscript to activate the camp and aim action while the bridge was intact, then disable them when the bridge is destroyed - but they continued ignoring it.
Maybe I'm nuts and maybe less is more - but it seems the more I try to force variety, the less I get. Currently I'm rolled back again, to a few tweaks after the update thats attached to the thread. I'm going to keep cracking at this but I'm going to focus on making that darn engie camp work properly then worry about the routes after.