[MCPE-14606] Pistons have slower ticks than PC, which creates issues when building certain redstone contraptions. Created: 03/Jun/16  Updated: 18/Jun/16  Resolved: 17/Jun/16

Status: Resolved
Project: Minecraft (Bedrock codebase)
Component/s: None
Affects Version/s: 0.15.0 Beta build 1, 0.15.0
Fix Version/s: None

Type: Bug
Reporter: D
Resolution: Incomplete Votes: 2
Labels: None

Attachments: PNG File Screenshot_2016-06-03-23-06-18.png     PNG File Screenshot_2016-06-05-08-19-49.png     PNG File Screenshot_2016-06-16-10-50-38.png     PNG File slow-piston.png    
Confirmation Status: Confirmed
Platform: Tablet - Android - Other (Specify in description)
CHK:

 Description   

Android Nvidia Shield Tablet K1
MCPE 0.15.0



 Comments   
Comment by D [ 18/Jun/16 ]

Alright, Alright... The problem is when you try to build a fast clock, the piston can't keep up with the ticks

Comment by ItsPlantseed [ 17/Jun/16 ]

Thanks depressed-pho, I'll update the affected version to both of these issues, when it still occur in future versions.

Comment by PHO [ 17/Jun/16 ]

Done:

I set the reporter of the first two issues to PlantSeed because it's them that reported those issues.

Comment by PHO [ 17/Jun/16 ]

I asked developers about this issue, and it turned out that there were 3 different bugs in it, namely PlantSeed's first screenshot (slime block doesn't move the piston), PlantSeed's second and third screenshot (pistons that should extend can fail to do so), and my fourth screenshot (piston's movement is significantly slower compared to the PC edition).

So I'm going to split it into 3 separate tickets. Since OMGItzApple's original report is so vague that I have no idea what they really meant, I will close it as Incomplete.

Comment by PHO [ 14/Jun/16 ]

Confirmed in 0.15.0
The screenshot shown below is a falling-edge detector which should emit 2 ticks pulse on a falling-edge and shouldn't emit a pulse on a rising edge.

The repeater is set to 2 ticks delay. On a rising edge the piston should take 1.5 redstone ticks to extend so there should be no pulse emitted from the output. On a falling edge the piston should retract instantly (0 redstone ticks) so there should be 2 ticks pulse from the output.

However in 0.15.0, pistons take 2.5 or 3 redstone ticks to extend and 1 or 1.5 redstone ticks to retract, so the said circuit instead works as a 1 tick dual-edge detector.

Comment by ItsPlantseed [ 05/Jun/16 ]

The screenshot was attached by me, and there is no invisible block.

Comment by AMAN4700 [ 05/Jun/16 ]

I think in the second pic between the andesite, its an invisible block. Can you check Drew?

Comment by ItsPlantseed [ 05/Jun/16 ]

If it was intended, it doesn't make sense.

Comment by Tavish McEwen [ 03/Jun/16 ]

Likely works as intended, pistons cannot be 0 ticked in pe.

Comment by Nilonaut [ 03/Jun/16 ]

Pretty interesting behaviour..

Comment by ItsPlantseed [ 03/Jun/16 ]

This screenshot explain everything.

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