[MC-11186] Levers and Buttons don't power Dispensers and Droppers properly at y+1 from Dispenser/Dropper Created: 06/Mar/13  Updated: 01/Jun/13  Resolved: 06/Mar/13

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

Type: Bug
Reporter: Joe Pelkey Assignee: Unassigned
Resolution: Duplicate Votes: 0
Labels: redstone
Environment:

64-bit x86 Linux 3.4, Java SE 1.6.0_37-b06


Attachments: PNG File Screenshot_A.png     PNG File Screenshot_B.png     PNG File Screenshot_C.png     PNG File Screenshot_D.png     PNG File Screenshot_E.png     PNG File Screenshot_F.png    
Issue Links:
Duplicate
duplicates MC-108 Droppers, Dispensers and Pistons acti... Resolved
Confirmation Status: Unconfirmed
Game Mode: Creative

 Description   

("dropper" means dropper or dispenser in what follows)

When redstone torches, dust, and repeaters power the block above a dropper, the dropper activates. When levers or buttons do likewise, a block update at y+1 from the dropper is necessary (but not always sufficient) for the dropper to activate.

Screenshot A, B, and C show setups that, when placing the torch/dust/repeater (in the powered on state) or toggling its power on from an outside source, causes the dropper to eject an item.

Screenshots D and E show a lever/button that should do likewise because they power all 6 sides of themselves, yet they do not when toggling their state.

Screnshot F shows that, when the lever (button also) is on, and a block is placed/destroyed on the dropper, it sometimes ejects an item (but only one block update max to y+1 of the dropper makes the dropper eject an item without toggling the lever/button off and on again, while also possibly needing to modify the contents of the dropper).



 Comments   
Comment by Tavis [ 07/Mar/13 ]

Same symptoms, similar cause, but fixing one won't fix the other.

Comment by Tails [ 06/Mar/13 ]

Pistons do the same thing and it's up for the developers to decide whether this behavior is intended or not. What you describe here are the symptoms of MC-108 so fixing that will fix this automagically.

Comment by Joe Pelkey [ 06/Mar/13 ]

I don't think it's a duplicate of that bug; based on looking at the code for 1.4.7 (MCP's onNeighborBlockChange() function in BlockDispenser.java), I think droppers/dispensers activating when the block at y+1 of them is powered is intended. If that's intended, the bug is that dispensers/droppers receive power differently from levers/buttons than dust/torches/repeaters (and comparators that I just checked now).

Comment by Tails [ 06/Mar/13 ]

Duplicate of MC-108.

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