[MC-8776] Comparators do not update their output signal

Comparators do not update there output signal except when right-clicked twice. each time one wants an updated output signal

Linked issues

is duplicated by 21

MC-9017 Comparator Doesn't update its output Resolved

MC-8867 Comparators do not update when Input B is changed. (Compare mode) Resolved

MC-8928 Comparator does not react, as it should Resolved

MC-8960 Hopper + Comparitor's signal not reliably updated to 15 when hopper is full Resolved

MC-9052 Comparator doesn't output redstone-signal Resolved

16 more links

relates to 1

MC-9687 Hopper don't update comparator when receiving item stack Resolved

Attachments

Comments 26

Kwin van der Veen 2013-01-31T16:13:01Z

I can confirm this, but only when the comparator is in compare mode, subtraction seems to work just fine. A comparator does update after the signal strength changes on the input.

Tails 2013-01-31T19:55:35Z

Confirmed.

Amir Heidari Zadi 2013-01-31T22:11:47Z

Confirmed. Subtraction mode works fine, but doesn't update in compare mode.

Zé Carlos 2013-02-01T14:18:16Z

This bug doesn't seem to have been fixed in Snapshot 13w05b

Norman B. Lancaster 2013-02-01T21:11:49Z

I think the description is misleading. For me the output strength is updated sometimes but not all the time.

16 more comments

Zé Carlos 2013-02-01T21:49:57Z

MC-8834 has good images explaining this bug, you might want to take a look.

Kienose D. 2013-02-03T06:56:12Z

Check MC-9017 too, simple configuration to reproduce it.

Ano Nym 2013-02-15T00:10:45Z

Can a mod reopen this issue? It is not 100% solved.

To reproduce in 13w07a, I used a comparator to check for the inventory of a hopper. If you toss 1 item into the hopper, the comparator sometimes goes on, sometimes it does NOT. After updating the comparator it will always turn on. Inluded a screenshot for proof.

Tails 2013-02-15T00:13:42Z

See MC-9687.

Daniel Bluhm 2013-02-26T17:43:52Z

This bug is back in 13w09a. It behaves exactly the same way as it did in 13w05a and b. The subtraction mode works as it should but, while in normal mode, the comparator does not update if the side inputs update.

Tails 2013-02-26T17:44:45Z

Reopened.

CharlesC 2013-02-27T17:56:16Z

yep i can confirm this one, failing in 13w09b too

Josiah 2013-02-27T18:02:43Z

Still exists in 13w09b.

chris 2013-02-28T04:05:52Z

i can confirm this too.

http://youtu.be/iYC2h4H5jvM

Josiah 2013-03-01T16:01:42Z

Still busted in 13w09c.

Randal Jones 2013-03-01T17:38:03Z

Comparators do not cause droppers to fire continuously in 13w09c. Is this the same bug?

Tails 2013-03-01T17:40:45Z

No, that bug was fixed, see MC-6077.

Randal Jones 2013-03-01T19:09:04Z

Oh no! I loved that "feature". It's very useful: A hopper, a comparator output and a power source all attached to a dropper or dispenser made it fully-automatic to empty all of it's contents without a clock--at three per second it is (was) faster than a clock can run, in fact. I'm sure I read that listed in the wiki as a feature/use of a comparator with a dispenser or dropper but there is no mention of it now. It worked yesterday when I was using 13w07a and now you are saying it has been "fixed?!" That's unfortunate.

chris 2013-03-01T23:55:46Z

I would like to see this feature re-added because it was great

Daniel Bluhm 2013-03-02T02:02:33Z

Sorry but here is not the place to talk about it nor does it pertain to this bug so please move your frivolities to the forums, I really don't want this to be overlooked because of irrelevant comments. It is a major bug in my opinion.
This bug was definitely fixed in 13w06a, at least for my system, though I don't think there is any variance based on the system itself. On the machines I've tested it on, it was still present in both a linux and windows environment and various hardware configurations.

Anon Ymus 2013-03-02T14:48:36Z

Works fine now. Both side inputs and hopper inventories update comparators without a problem.

Tails 2013-03-02T14:58:19Z

Still reproducible in 13w09c.

Josiah 2013-03-04T15:44:23Z

Reproducible in 13w10a.

Josiah 2013-03-06T14:43:15Z

Still not working in 13w10b.

Max Langhof 2013-03-13T17:31:22Z

Why is this considered "resolved because fixed"? The latest snapshots still have this bug, and i doubt mojang will fix it with the current status...

Josiah 2013-03-13T17:44:45Z

Max, this was fixed in Pre-Release 1.5.