Please update if you're still around :)
2.1.20 removed "LuaPlayer::spectator" so a simple version bump no longer works

Can you please upload a save with base? I don't have any working ltn saves now so can't really test the mod

Updated the mod but have no idea if it's working, I have nothing to test it on

tysm I'll give it a try soon

I think you uploaded the wrong file seeing as the name doesn't match info.json which throws an error.
After renaming it to "LTN_screensaver" it does seem to work though ^^
nvm this was a fault on my end, I have no idea how that happened

The mod works ^^ but sometimes it's very slow to start tracking a train or doesn't at all, that was the case before too, but should definitely be fixed
(unless I'm doing something wrong).

My biggest request is a button on the shortcut bar instead of the keybind.

Here's a blueprint for testing your mod ^^
it might not display the whole string properly but if you triple click you should be able to copy:

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

woops wrong button

but sometimes it's very slow to start tracking a train or doesn't at all, that was the case before too, but should definitely be fixed
(unless I'm doing something wrong).

Probably working as intended: the mod waits for a next ltn dispatcher update and scans for new deliveries. new delivery must not contain items recently delivered so you don't constantly watch the copper or iron train.

My biggest request is a button on the shortcut bar instead of the keybind.

sorry, I barely play factorio at all so most I can manage is bugfixes like version incompatibility

Probably working as intended: the mod waits for a next ltn dispatcher update and scans for new deliveries. new delivery must not contain items recently delivered so you don't constantly watch the copper or iron train.

That makes sense

sorry, I barely play factorio at all so most I can manage is bugfixes like version incompatibility

no worries, tysm for the update ^^