WORLDEDIT-3124 - Reported by CommodoreAlpha

When selecting a region and using either "/set " or "/replace ", there should be an additional, optional argument allowing you to specify the light-level required for the block to be replaced.

Examples can include "0" to indicate that only blocks with a light-level of 0 should be replaced (so, all solid blocks and all transparent blocks including air that have no light), ">7" to indicate that only transparent blocks with a light level greater than 7 should be replaced, and etc.

Although seemingly impractical, it could be a useful feature for nitpicky users who don't like air-pockets within anything they build (one reason being that it makes annoying ambient sounds). For instance, I would sometimes find myself terraforming via the "smooth-brush" only to find that I would occasionally leave behind an air-pocket in the hillsides I create.

Comment by wizjany

Er, so, basically a mask...

Comment by CommodoreAlpha

That's a great way of summarising my suggestion, although I didn't know masks could also be applied to region-editing operations.

Comment by wizjany

//gmask```

Comment by PseudoKnight

While masks do not support light levels, masks could still be used for filling in pockets of air or other undesirable block types.

You can choose non-solid blocks with "/gmask !#solid", though a few solid blocks were accidentally classified as non-solid: carpet, repeaters, and comparators.

A side note: when double checking there were no light level parameters, I found a few that are missing from the wiki: #solid, #dsel, %50 (percentages), $biomename.

Comment by sk89q

Well masks can "mask out" anything.

But there is no light mask -- that is true. I will consider adding it.

Percentages should be documented on the wiki though. That's a pretty ancient feature.

Comment by PseudoKnight

It's possible some of those can be found in other places in the wiki, but not in the masks section:
http://wiki.sk89q.com/wiki/WorldEdit/Masks

Comment by sk89q

Well, the % thing is not a mask -- it's a pattern.

Masks determine ''what'' is replaced, while patterns determine what something is replaced ''with''.

http://wiki.sk89q.com/wiki/WorldEdit/Block_data_syntax#Patterns

Comment by wizjany

he's talking about the randommask - https://github.com/sk89q/worldedit/blob/5.6.2/src/main/java/com/sk89q/worldedit/masks/RandomMask.java
which has not been around as long as the percentage patterns

Comment by sk89q

I didn't even know that existed, and I'm pretty sure I had to rewrite it for 6.x.

Talk about mindless programming.

Comment by PseudoKnight

Ya, I discovered these in the mask parser. I had never seen or used them before.
https://github.com/sk89q/worldedit/blob/master/src/main/java/com/sk89q/worldedit/extension/registry/DefaultMaskParser.java