[AI] SuperSimpleAI v55 (Stable) and v58 (Testing)

[3iff]

Absolutely my pleasure...

I really like the way V45 uses double road stations. Somehow I never quite thought of doing that (in that way).
It also makes upgrading the stations to through stations a lot easier.

[Wanabe]

Hello, it seems I have managed to find a combination of settings/newGRF to get V45 of Super Simple AI to crash in JGR 0.54.2 (https://github.com/JGRennison/OpenTTD-patches/releases). If I had to geuss based on the name of the Function in the stack trace it's due to Mail being removed from the game via viewtopic.php?t=87332 ( Improved Town Industries 2).

I've played other games close to vanilla settings with Super Simple running in the background and it seems rather stable in those configurations, even after long sessions or many years and multi-session plays. I like the simplicity of this AI overall. While it can certainly struggle or otherwise get itself into serious trouble it can also be surprisingly effective with what it does.

While I'm posting I'll add that I've noticed that sometimes it has trouble with train lines with 90 degree turns turned off and can get the trains stuck going in and out of a depot. The trains I've seen stuck did technically have an indirect route if it just turned and went to the nearest train station first but the pathfinder couldn't figure that out for the AI.

Other than the above occuring here and there my only real gripe with SuperSimpleAI is probably how slow it takes to calculate/pathfind its new routes it's building. It could understandably be intentional, of course. Sometimes though it can take so long building a train route for example that I've seen it trying to build one for multiple years and then eventually demolish it.

Cheers and thanks for developing this AI for the community.

[Jaume]

Thank you for your report Wanabe

I don't have time these days, this new version 46 only fixes the crash reported at last reply by Wanabe, and a little protection for the problem reported by 3iff recently: now this AI don't try to use roadveh/train/aircraft if they are disallowed in GameSettings. But, I think, pathfinding may hang the AI if these configuration changes when it is pathfinding.

And, since v44, replacing road vehicles doesn't work well. Some road vehicles are stopped in depots for months, until they are removed.

This version is poorly tested!

[Jaume]

Hi all,

Version 47 is here. It fixes another (and unusual) crash.

[3iff]

Not sure if this is fixed in V47, but I finally grabbed an issue with V45...but I've left the screenshot at home (Sorry)

Anyway, the details are in MAIN.NUT line 537 (of version 45).
The AI tries to add a wagon...and on rare occasions, WAGON = NULL but there's no check for this possibility.
It then tries to check the minspeed (or maxspeed?) of a non-existant item and it crashes the AI.
It's a very rare event which is why I've had trouble tracking it.
I'll try and get the screenshot here next time I'm on but maybe that's enough info to be going on with?
(Ah, is that the bugfix in V46??)

Meanwhile, I'll try V47.

[3iff]

Sorry about the misinformation above. I had the wrong file and wrong line number...

Anyway, it looks like the problem may have been investigated by you in V46 (the code had been changed) and using V47 I haven't seen the issue again.

[Jaume]

Hi all! I'm back!

New version 48 is here. Tons of code, a few changes in rail building, and some fixes:

Fixed malfunction in train engine cache.
Fixed some trash (isolated depots) when building a rail route and source or destination industry closes.
Rail stations that accepts or provides two cargos looks for the two cargos (using NewGRF, of course).
Faster railbuilding, using fake passing lanes (like checkpoints) between passing lanes. This changes how passenger rail routes are made.
Save data when replacing small airport by big one.
Station tile now is far as possible from the other station. This improves incoming, especially in short routes with long trains.

You can download this version of SuperSimpleAI from first post. Enjoy it!

[Jaume]

AI building a rail service, every 6-7 days it buys/sells an engine (maybe checking it can do so).

It is because a malfunction in the engine cache. It is fixed in v48.

However, I disabled AI from building trains during this process (while it was pathfinding). The script complained that it couldn't build the engine and then seemed to stop doing anything.

I think that is a problem with PathFinder Lib. Simply it hangs. I don't know how to fix it.

There is also the issue with making a vehicle class (trains or RVs) unavailable during the AI process of trying to build that type of service. (Does that make sense??)
Currently it seems to just stop (perhaps waiting for that vehicle class to become available).

Well, before building something this AI makes all checks. But it doesn't make this check while building. Maybe it can be done...

Thank you 3iff

[Jaume]

Other than the above occuring here and there my only real gripe with SuperSimpleAI is probably how slow it takes to calculate/pathfind its new routes it's building. It could understandably be intentional, of course. Sometimes though it can take so long building a train route for example that I've seen it trying to build one for multiple years and then eventually demolish it.

Try v48 with FastPathFinder enabled (it's enabled by default). It has the effect of dividing the distance of two points to build rails by two, using 1/4 of time to calculate it. But it can do some strange turns in the route.

Thank you Wanabe!

[3iff]

Jaume,

Thanks for the continued support. I've very glad to help detect any bugs that sneak through.
I'll try the new version when I get a chance and hopefully I won't be reporting any problems!

[Jaume]

Hi all, hi 3iff

This new version fixes the crash described in viewtopic.php?p=1270429#p1270429

v49:
Fixed crash when removing road stations at loading game stage.

[Jaume]

Good afternoon!

Version 50 is out. There are some changes placing stations, now destination station can be linked to two industries, when dual cargo routes. And some faster functions placing passinglanes too. This version is Testing, I don't has too time to test it too much. You can download this latest version from first post.

v50:
Link two industries to destination rail station, if it is possible (of course, with dual cargo routes).
Better and faster placing stations and passing lane functions.
Fixed bad direction of passing lanes in two destination rail lines.
Don't send dual cargo trains to depot (because are too old, or to attach more wagons) if isn't empty.

Please, write here if you found a bug!

[Jaume]

Happy new year! Four years since SuperSimpleAI was published...

Version 51 is available from download in first post.

v51:
Added single passing station for some dual cargo routes.
Shorter stations for non-primary industries.
Less CPU consuming in Load() and Save() functions.

[Jaume]

New version 52 is available to download in the first post.

v52:
Fixed crash when saving a game while it's replacing airports.
When building dual cargo routes, don't remove the route if only closes one of two of destination industries, but transform it to single cargo route.

[Jaume]

Yep! Version 53 is out!

Finally, SuperSimpleAI can build thousands of routes without crashes when saving the game. I tested it with 5000 aircrafts, 1600 trains and 4300 road vehicles! Over 2500 routes

v53:
Changed the limit of maximum routes to 3600.
Some issues fixed and some tunning in Manager functions.
Fixed some air issues.
Renew vehicles even if the limit is reached.
Check for vehicles with wrong number of orders.

Enjoy it!

[Jaume]

Another testing version is out!

v54:
Now is possible to load games from version 25 or older without crash (poorly tested).
Don't build new routes if we have already reached the aircraft/road vehicle/train limit.

With this version we can load old games, with a SuperSimpleAI from BaNaNaS. I tested it with an old game with version 22 of this AI. If you found a crash loading old games, please write me.

Enjoy!

[xarick]

Got a crash.
I'm using a custom openttd build, but the savegame should be loadable on the latest openttd nightly versions from 20250328 and up.
These are the parameters I used on the 15 AIs:

Code: Select all

SuperSimpleAI = aircraft_style=0,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=0,max_transported=10,min_pass_train_length=0,min_train_length=0,rename_airports=1,rename_stations=1,road_line_type=0,slowdown=0,subsidy_chance=0,train_length=0,train_line_type=0,train_pass_line_type=1,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=1,build_statue=1,close_unprofitable_routes=1,electrify_old=1,fast_rail_pf=1,max_pass_train_length=1,max_transported=10,min_pass_train_length=1,min_train_length=1,rename_airports=1,rename_stations=1,road_line_type=1,slowdown=0,subsidy_chance=0,train_length=1,train_line_type=1,train_pass_line_type=2,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=2,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=2,max_transported=10,min_pass_train_length=2,min_train_length=2,rename_airports=1,rename_stations=1,road_line_type=2,slowdown=0,subsidy_chance=0,train_length=2,train_line_type=2,train_pass_line_type=3,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=3,rename_airports=1,rename_stations=1,road_line_type=3,slowdown=0,subsidy_chance=0,train_length=3,train_line_type=3,train_pass_line_type=4,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=4,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=4,train_line_type=5,train_pass_line_type=5,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=5,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=5,train_line_type=6,train_pass_line_type=6,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=6,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=6,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=7,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=7,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=8,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=8,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=9,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=9,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=10,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=10,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=10,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=11,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=10,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=12,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=10,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=13,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0
SuperSimpleAI = aircraft_style=3,build_statue=1,close_unprofitable_routes=1,electrify_old=0,fast_rail_pf=1,max_pass_train_length=3,max_transported=10,min_pass_train_length=2,min_train_length=10,rename_airports=1,rename_stations=1,road_line_type=4,slowdown=0,subsidy_chance=0,train_length=14,train_line_type=7,train_pass_line_type=7,use_aircraft=1,use_localbuses=1,use_regionalbuses=1,use_roadvehs=1,use_trains=1,use_trucks=1,waiting_time=0

[xarick]

I have another crash. Savegame is too large for the forum. I uploaded here: https://1drv.ms/u/c/23b29f3de45f6f1f/Ee ... g?e=ewswcm

[Jaume]

Thank you so much xarick!

Version 55 prevents this crashes, but I don't know why some variables has null value into this functions.

[Jaume]

Hi all!

There is a new release with some new features and bugfixes:

v56:
Check events while electrifying or removing a rail line.
Check events and routes while searching a place to build a rail station.
Don't electrify or remove rail lines if we are building a route, this will put wrong data in saved games.
Fixed missing extra destination industry in saved data.
Show route's last year profit (only Cargo trains and trucks, and when "Close unprofiteable industries" setting is on).
Fixed bad size of passenger trains.
Don't flood the console with the "We have reached the aircraft/road vehicle/trains limit" warning.
Prevent Manager to spend too much time checking routes witout using some time building something.
Renamed settings.nut file to aisettings.nut.
Renamed manager.nut file to cmanager.nut, ans some function improvements.
Moved all cBuilder files to new "cbuilder" directory.
Prevent to use unnecessary depots while pathfinding from or to fake passinglanes.
Transform dual cargo lines to single cargo line if the industry near passing station closes.

Since Stable version can load games started with BaNaNaS version of SuperSimpleAI, OldStable version is no longer available.