[Bug]: There is no way to autofill signals, even with a straight section of track, in the AI API

[btzy]

Version of OpenTTD

13.1, Win 10

Expected result

Human players can drag the signal tool over a straight section of track to place signals on the entire section (with pre-chosen spacing). They can also hold down Ctrl to place signals until the next junction.

Both humans and AIs can build a straight section of track in a single command. For AIs this is the AIRail::BuildRail command.

As building signals are almost as important as building tracks, and we already have a way to build a straight section of track in the AI API, it is expected that we should have something similar for building signals too.

Actual result

There is no such function in the AI API, so AIs need to build signals individually, despite being able to build arbitrarily-long straight sections of track in a single command.

Steps to reproduce

Look at the AIRail API reference and observe that no such function exists.

[2TallTyler]

I don't think this is a bug, but a feature request. An AI can use its own algorithm to place signals on a segment of track. I'd be happy to review a PR giving AIs access to this command, but I don't think the feature request belongs in the issue tracker.

[nielsmh]

The actual issue here might be that it's an instance where a player can perform a large-area action in a single command, while an AI would need to perform multiple commands, of which it can only perform a single command per tick.