[MC-11189] Comparator clock output doesn't ever turn off Created: 06/Mar/13  Updated: 27/Mar/17  Resolved: 16/Mar/13

Status: Resolved
Project: Minecraft: Java Edition
Component/s: None
Affects Version/s: Snapshot 13w10b, Minecraft 1.5
Fix Version/s: None

Type: Bug
Reporter: George Gates Assignee: Unassigned
Resolution: Works As Intended Votes: 5
Labels: dispenser, dropper, redstone, redstone-comparator
Environment:

OS: Windows 7 Home Premium 64-bit
CPU: Intel Core 2 Quad Q8400
RAM: 4GB
GPU: Radeon HD 5770
(VRAM: 1GB)
Java: 1.7.0_17 (Java 7, Update 17)


Attachments: JPEG File Design Comparison.jpg     Text File crash-2013-03-06_18.12.47-client.txt     JPEG File othertests.jpg    
Issue Links:
Duplicate
is duplicated by MC-9349 Repeaters not turning off in a compar... Resolved
is duplicated by MC-11348 The droppers reacts differently in si... Resolved
is duplicated by MC-11494 Comparator only graphical redstone fl... Resolved
is duplicated by MC-11512 redstone loop only powers dispenser o... Resolved
is duplicated by MC-12109 the /testfor command in command block... Resolved
is duplicated by MC-12203 Clock bug Resolved
is duplicated by MC-13213 Rapid pulse generator glitch with red... Resolved
is duplicated by MC-14230 Depending on distance from comparator... Resolved
is duplicated by MC-25797 Command block not updating Resolved
is duplicated by MC-35046 Dispensers/Droppers only activate whe... Resolved
is duplicated by MC-44536 Redstone clock not triggering all att... Resolved
is duplicated by MC-45431 Redstone Comparator clock bug (Renamed) Resolved
is duplicated by MC-45666 Powering one face of a command block ... Resolved
is duplicated by MC-49543 Misbehaving Comparators Resolved
is duplicated by MC-50761 Redstone clock does not activate comm... Resolved
is duplicated by MC-50893 Comparators connected to Command Bloc... Resolved
is duplicated by MC-50906 Command Blocks doesn't get updated wi... Resolved
is duplicated by MC-51823 Command block with comparator clock Resolved
is duplicated by MC-55635 Comparator clock not activating comma... Resolved
is duplicated by MC-56133 Clock too fast for Command Block Resolved
is duplicated by MC-56265 Comparator clock not working with com... Resolved
is duplicated by MC-56298 Command blocks not executing while tr... Resolved
is duplicated by MC-58586 comparator redstone clocks doesnt wor... Resolved
is duplicated by MC-66739 Command Blocks can't keep up with com... Resolved
is duplicated by MC-71010 One specific comparator timer doesn't... Resolved
is duplicated by MC-75270 /execute command not working in comma... Resolved
CHK:
Confirmation Status: Confirmed
Game Mode: Creative

 Description   

Droppers and dispensers only react to rapid one-tick pulses if the signal strength is below a certain threshold (or the redstone wire length is above one, depending on how you word it).

This video I recorded shows the issue more clearly, in addition to the screenshot.
http://www.youtube.com/watch?v=RxOUAR8Q5V8



 Comments   
Comment by Daan Boer [ 16/Mar/13 ]

Thanks, as you explain it it's very easy to understand

Comment by George Gates [ 16/Mar/13 ]

Looks like you're right. My initial tests using comparators as fast clocks (attached screenshot "othertests") had the pistons placed slightly differently.

Comment by Tails [ 16/Mar/13 ]

Now that I think of it, that works as intended, let's see how this comparator clock works: 1. Comparator is in subtraction mode.
2. You provide a signal from the back, comparator outputs strenght of 15 in the front. This loops to the side where the signal is 13. Comparator is in the subtraction mode: signal A - signal B. In this case signal A is still 15 but B is 13. So now the output of the Comparator is 2. That's why powered mechanisms won't react because the signal does not shut off completely but goes down to 2.

Comment by Daniel "Glampkoo" [ 08/Mar/13 ]

Yes, I reproduced it and it is indeed a bug.

Comment by Anon Ymus [ 06/Mar/13 ]

Also confirmed. With a stronger signal, it shoots once and then stops.

Comment by Tails [ 06/Mar/13 ]

Confirmed and applies to all powered mechanisms like pistons, repeaters, noteblocks...

Comment by George Gates [ 06/Mar/13 ]

Here's a quick overview screenshot.

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