9e91425c5d
LevelChunkSection puts two shorts in front of every section: nonEmptyBlockCount and fluidCount. We wrote the first and then a literal 0 for the second, under a comment claiming it was a reserved field that vanilla always leaves at zero. It is not reserved and vanilla does not. So every client was told every section is fluid-free, in a world where the aquifer now fills oceans, lakes and flooded caves. The golden test did not catch it because its fixture is a superflat chunk whose real fluid count is zero. The count is per block state, not per block: a waterlogged stair holds a fluid while a dry one does not, and the flag for that comes from the block-state dump added with the heightmaps. |
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| nbt | ||
| network | ||
| protocol | ||
| registry | ||
| server | ||
| world | ||
| worldgen | ||