Transport Tycoon Forums

RailwAI has trouble replacing some trains and has some very weird equipment choices - like three locomotives in a row for small trains even on fairly flat routes.

TTDManager689 wrote: 30 Oct 2023 20:51 Hello, this is my first time to report the issue.

I've just noticed a issue on a AI on trying to build a tram network.
It seem once building a tram route it hasn't succeeded every time it did that even when installing Newgrfs with trams included.

The example as seen on the attachments below the script tells me the following issue:

No path found at 183469
result: false
Something went wrong while executing a plan. Undoing...
ERR_NONE
Idea could not be executed

While I'm trying to find a solution I wonder if it is a bug otherwise is there any solution I should try? Thanks for reading!

Thank you for reporting this bug. It seems RailwAI has some troubles using tramways in cities and I'll start looking into this.

uzurpator wrote: 08 Nov 2023 18:40 RailwAI has trouble replacing some trains and has some very weird equipment choices - like three locomotives in a row for small trains even on fairly flat routes.

Do you have a savegame for me available? From a screenshot I can't determine why the choices were made (game settings, NewGRFs, ...). For now, RailwAI doesn't take into account whether a line has a lot of slopes or not. It could be intended behaviour here: sometimes trains are assigned an extra locomotive.

I did some testing and this behavior seems to be connected to the weight multiplier for freight trains. On stock game setting it to 5 will make RailwAI happily run three locomotives and six wagons on even the flattest routes. Whatever power / weight ratio it tries to achieve, it tends to produce weird results for weaker locomotives.

I just saw the MasterHellish (YouTuber) 100 year AI battle royale video and this AI come out on top on the profit graph so I thought I could see the notes.

Clanority wrote: 03 Feb 2025 19:04 this AI come out on top on the profit graph

Crikey, how did that happen? I'm surprised it isn't one of the others like AAAHogEx heh

Maybe I'm missing on some precious views & clicks by not uploading the tests I do for the unofficial AI testing thread & good AI list hah. Either uploading results, or just livestreaming the entire thing from the test machine that does them.

Redirect Left wrote: 03 Feb 2025 22:42

Clanority wrote: 03 Feb 2025 19:04 this AI come out on top on the profit graph

Crikey, how did that happen? I'm surprised it isn't one of the others like AAAHogEx heh

Maybe I'm missing on some precious views & clicks by not uploading the tests I do for the unofficial AI testing thread & good AI list hah. Either uploading results, or just livestreaming the entire thing from the test machine that does them.

Yeah it was quite a clear win there was a massive gap between the rest of them. I ran a simulation of my own with 14 of the RAILW AI and its just fascinating to watch the network expand.

Thanks for the positive feedback and the reference to that YouTube video! I just watched a few minutes of the video. I see he didn't choose AAAHogEx to use, but it is fun to recognize the building style of RailwAI on the map and that the features work well on such a map. I also enjoy seeing the imperfections, such as the train crash that occurred. Even without active development in the last years it still performs good

uzurpator wrote: 07 Jan 2024 09:29 I did some testing and this behavior seems to be connected to the weight multiplier for freight trains. On stock game setting it to 5 will make RailwAI happily run three locomotives and six wagons on even the flattest routes. Whatever power / weight ratio it tries to achieve, it tends to produce weird results for weaker locomotives.

On the short term I am not planning to resume further development (priorities have been on other things for the last year), but I have noted it in my local list of bugs that once should get improvement.