This is a good post. Most of the legendary science packs went smoothly. But the agriculture science pack is really a huge hassle. I also feel like it wasn’t well thought out, and your suggestions aren’t bad. However, they need to be examined from all angles to ensure they wouldn’t cause some massive ...

Sorry for bothering you. I thought it would help people create better pull systems and be cautious about the mistakes that interrupts introduce. Obviously, I misunderstood based on your reactions. Enjoy the game.

From my perspective, it’s a system without feedback, and such a system will never function properly.


I disagree with this from your original post, as i said it's not the case that such system lack feedback or can't function properly.

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The system I outlined with the concept the game ...

From my perspective, it’s a system without feedback, and such a system will never function properly.


I disagree with this from your original post, as i said it's not the case that such system lack feedback or can't function properly.

And i think it's fairly obvious by now that you prooved it ...

So, share it with us then! ;-) For now, I disagree with your opinion. As I said, there are plenty of systems with interrupts, but without proper error handling, it will fall apart.


I understand you think it's impossible to make reliable system using interrupts without error handling despite ...

You can easily read train cargo using a train stop with "read train content". Also interrupts are allowed to triggered based on train content, which makes it another way to do.

...
Interestingly, so far, I’ve only seen this approach in one example that was shared here. I simply haven’t seen ...

Do you mean without interrupts or with them? So, should the train be set manually, or should there be a template where you insert the train and simply select the specific type for servicing?

...
While we're talking about it, there are more QoL features not directly visible:

Global rename ...

EDIT:You don't need to reconfigure existing trains at all. You just add new pickup and dropoff stations for an item type wherever applicable, and add the appropriate amount of trains to populate each new pickup station.


Do you mean without interrupts or with them? So, should the train be set ...

Speaking of LTN, I made a true LTN train (any items in, any items out, any quantities) for my Fulgora starport which didn't fit (literally) the main island, buuuut...

It only supports one, and exactly one train
It only supports one, and exactly one provider
It only supports one, and exactly ...

A cargo train is loaded with goods it cannot deliver, returns to the depot, and error handling is required.
A server error occurs, counters are miscalculated, and the game itself occasionally bugs out, requiring error state handling when cargo is delivered incorrectly.
...


For the system ...

If you do have a solution like the one you describe as "perfectly fine train systems," I would be glad to see its blueprint so that I can evaluate it. Thank you.


Item pickup stations, item drop-off stations, trains that run that as a dedicated route. If your only goal is a train system that ...

I know I’m being annoying, but I consider the depot calculation to be the core of the entire system, and if I don’t know exactly how it works in your setup, the entire system I assemble for testing will be different.

I could take the approach of incorporating it from my own depot solution, but ...

I'm surprised you'd say that LTN does it right and vanilla Factorio does it wrong.

I like LTN, but one terrible OOTB setting it has is to assume a train is "lost" after a certain amount of time with no delivery. That's how you end up with mixed belts.

In vanilla Factorio you just use Empty cargo ...

I’m really glad for the additional contributions that have appeared here because, for instance, the cargo condition is something I simply overlooked and hadn’t seen in other approaches. It’s so critical that it should practically be flashing red! However, there are also new posts discussing a ...

I made my current train system by first thoroughly studying then shamelessly copying the stuff that was presented in fff-389 and fff-395 .
The general idea and interrupt layout is in #389. Then in #395 the refinement with the green wildcards that replace explicit selecting of all the cargo to ...

Hares,
I’m looking at the blueprint, and there’s one thing I don’t understand. Who assigns the value to the train’s interrupt signal? For example, I’ve been using the depot station to assign it, but now that I’m looking at your blueprint, there’s a logic circuit that doesn’t seem to do anything ...

If there were a way for the train to know its cargo or, for example, to return to the depot where the current cargo is identified, then it could never leave with the wrong cargo. Do you see where I’m going with this? The vulnerability and fragility of such systems with these kinds of ...

Thank you very much for your contribution, Hares. I will take a closer look at it. Do you also have the station setup with the Circuit Network or a blueprint? It would make testing easier.



Hares,
I’m looking at the blueprint, and there’s one thing I don’t understand. Who assigns the value ...

Thank you very much for your contribution, Hares. I will take a closer look at it. Do you also have the station setup with the Circuit Network or a blueprint? It would make testing easier.


If there were a way for the train to know its cargo or, for example, to return to the depot where the ...

All of these I can safely call the "bad design" and not "lack of proper system feedback".
...
It's extremely robust train system that can clock up in exactly one scenario I'm aware of -- when a requester with limit=1 opens, and there's no trains with that item in depots, and provider with limit>1 ...