[MC-6341] Pistons stay extended when using with redstone torches or daylight detectors. Created: 06/Jan/13  Updated: 01/Jun/13  Resolved: 06/Jan/13

Status: Resolved
Project: Minecraft: Java Edition
Component/s: None
Affects Version/s: Snapshot 13w01b
Fix Version/s: None

Type: Bug
Reporter: Justin William Grandin Assignee: Unassigned
Resolution: Duplicate Votes: 0
Labels: redstone

Attachments: PNG File 2013-01-05_20.43.03.png    
Issue Links:
Duplicate
duplicates MC-108 Droppers, Dispensers and Pistons acti... Resolved
Confirmation Status: Unconfirmed
Game Mode: Creative

 Description   

I was creating a redstone firework shooter in creative mode. I had to invert the signal into a deactivator (meaning I used a redstone torch to make the signal turn off the piston,) but I noticed when a sent the signal, the piston did not retract. It only turned off when I removed the redstone torch. It had the same reaction with a daylight detector.



 Comments   
Comment by Anon Ymus [ 06/Jan/13 ]

From the wiki:
"In addition to the methods above, a piston can also be turned ON if one of the methods above would activate a powered mechanism in the block above the piston, even if there is no powered mechanism there (even if the block above the piston is air or a transparent block), but only when the piston receives a block update. This is known as piston connectivity (the piston is "connected" to the block above for the purposes of activation)."
(This is the essential ingredient in many block update detectors and Mojang has basically said they won't fix it.)

Comment by Justin William Grandin [ 06/Jan/13 ]

Are you sure? Look, the lever is powering the wood plank, the wood plank can only send it's power to something touching it. It can not send power diagonally.

Comment by Anon Ymus [ 06/Jan/13 ]

But the piston should be on. Quasi-connectivity means that the lever is still sending power to the piston.

Comment by Tails [ 06/Jan/13 ]

Duplicate of MC-108, please use the search function to see if your bug has already been submitted. Currently over 40% of tickets are being closed as duplicate.

Comment by Justin William Grandin [ 06/Jan/13 ]

As you can see in my attachment, the piston has not retracted, though the redstone torch is in off-state.

Comment by Tails [ 06/Jan/13 ]

Please attach some screenshots.

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