The portal's air pocket is placed for real now: vanilla's fluid ticks then flood every pocket cell connected to surrounding water while sealed cells stay air, so the piece ends with a bounded BFS over its own air cells from water neighbours. BlockAgeProcessor gains the stairs/slab branches with their property-preserving mossy variants, and horizontal facings rotate with the piece (mirror first, then quarter turns). Portal box match against the fixture jumps from 52.7% to 84.1%; region parity rises to 98.047% with biomes and heightmaps exact. Remaining box diffs trace to drip columns reading the shared decoration stream, which is approximated per-cell. |
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