Light emitting values of blocks

[rom1504]

@hansihe was saying in #mcdevs that http://minecraft.gamepedia.com/Light#Light-emitting_blocks are interesting values
Possibilities:

• putting it in blocks.json, but it would mean expanding the extractor https://github.com/PrismarineJS/minecraft-wiki-extractor/blob/master/lib/block_extractor.js again
• putting it in a blocks_lights.json because it's kind of separate from most uses of blocks

(it would anyway be exposed as a single block thing in wrappers)

[rom1504]

A benefit of blocks_lights.json is it could be written manually to begin with ;)

[rom1504]

fixed by #102

[nickelpro]

Right now light emitting blocks such as lava are listed as "transparent" when that's not really true. They're opaque light emitters in their own right, not transparent to the light level above them.

[rom1504]

Hmm the wiki do list lava as transparent http://minecraft.gamepedia.com/Lava

@hansihe how would you handle lava in your light handling thing ?

(also see WIP in PrismarineJS/minecraft-wiki-extractor#12 )

[hansihe]

I do think what @nickelpro is saying is technically true, but I don't think it realistically matters since lava emits the highest possible light level, 15.

Edit:
To clarify, the lava block would still be transparent in blocks.json, however it would have filterlight 15.

[hansihe]

Lava would be handled just like a normal light emitting block. Since light emitters don't affect blocks that are lit up to a higher light level by another light emitter, and lava emits the highest possible light level, 15, I don't think there is any possible way changing the filterlight of lava would make any difference.

[Gjum]

This could be verified by creating a closed room with only lava (/glowstone/redstone lamps) as walls and looking at the skylight in the F3 screen.

[hansihe]

@Gjum has a point, what I said earlier was false. If I'm not mistaken, the filterlight value of lava would in fact affect skylight.