Mojira Archive
MC-123217

Moving blocks don't inherit behaviors of the block they hold

When moving blocks with pistons they change their behaviors while being moved.
In some - not all - cases it would make sense and remove some bugs if the moving block took some of the properties of the block inside it.

Here is an incomplete list of the properties that could be considered.
Please note that each of these should be well thought about and discussed, as there is also great potential to introduce new bugs.

Behavior Related Issues Comment
Light opacity   Can cause flickering and a waste of performance due to unnecessary light updates in flying machines
Solid top MC-93631 Could fix Rails popping out on finishing moving, returning solid for the moving block seems odd though, because when it starts moving there is certainly no solid top on the target side
Solid/Transparent block   Would break a well known and used redstone behavior
Visual Transparency MC-158003  
Slipperiness   Basically just matters for ice, but would make sense
OnFallenUpon Behavior MC-89043 (not the same cause) e.g. slimeblocks should bounce players up while moving
Blast resistance MC-123025 Sometimes used to easily break blocks, kind of a cool quirk
Redstone power output   Frequently used redstone behaviour
Emitted light MC-3667  
3rd person camera behavior MC-233929  
Sculk sensor vibration blocking MC-213587  
Block material/note block instrument MC-250307  
Tinted glass for beacon beam color MC-147777 beacons cannot quickly change colors with fast pistons

What else could be considered?

Another option would be to start using the holding block's behaviors once the block moved half the way, but it seems odd and might not be supported by the underlying structure to have changing behaviors without changing the block state like that.

These issues are generally not vitally important, however I think they are worth considering for potential systematic changes regarding moving blocks.