[2.0.77] Selector combinators 'Random Input' doesn't update signal count
Posted: Fri Jul 31, 2026 6:38 pm
by Kirakian
Selecter combinators 'Random Input' doesn't update signal count until it selects a new input. This causes my inserter to not have the actual stack size derived from the signal count and overfill the train wagon. I expected that it only selects a single signal to send through instead of creating a freeze frame of the signal. I would want this to be fixed, even if it is making it an option to have live signal count.
This is on 2.0.77 (build 84539 expansion, win64)
Blueprint string where I use 'Random Input' with the unexpected behavior:
Re: [2.0.77] Selector combinators 'Random Input' doesn't update signal count
Posted: Fri Jul 31, 2026 6:55 pm
by boskid
Not a bug.
Re: [2.0.77] Selector combinators 'Random Input' doesn't update signal count
Posted: Sat Aug 01, 2026 8:51 am
by Kirakian
How is this not a bug if the 'Select Input' does update the signal count? What makes this different?
Re: [2.0.77] Selector combinators 'Random Input' doesn't update signal count
Posted: Sat Aug 01, 2026 9:00 am
by boskid
It is Not a bug because current behavior matches the design decisions of how random input is supposed to work. Just because you want it to work differently does not make it a bug.
Current approach of freezing value when random input skips update was the most reasonable when considering various circuit contraptions for a universal mall where using update interval was used to make network of combinators with high latency propagate all signals down the network before new output was selected. What you are asking for is to have selector combinator freeze selection of the signal but still update the value of the selected signal. This would cause various problems because if you would have contraption where on input you either get signal-A=1 or signal-B=1 (but not both at the same time), when selector combinator would pick select-A to output, at some ticks it would output nothing because it still wants to output signal-A but at the current tick when signal selection is frozen the value would be 0 and as such the output would be empty.
Re: [2.0.77] Selector combinators 'Random Input' doesn't update signal count
Posted: Sat Aug 01, 2026 9:24 am
by Kirakian
Thank you for the explanation. I will try to find a work around for my situation.