CityWorld ReForged

CityWorld 5.13.0

Released for all six Minecraft versions. One theme: CityWorld now knows exactly where every structure will be before it plans, and shapes the land to it properly. Also the minute-long stall next to a large modded structure is gone.

Changed

• CityWorld now knows exactly where a structure will be before it plans the city around it. It makes the same placement call Minecraft will make later, ahead of any chunk, so the ground it keeps clear is the structure's real footprint plus one chunk, not a square guess. Measured on one 2,809-chunk sweep: chunks reserved fell from 1,160 to 279, and the 804 chunks that used to be kept empty for a structure that never came are gone. The self-test now proves the forecast against what the chunk really stores on every version.
• The ground under a large modded structure is shaped on every side. The blend used to reach only as far as the chunk pipeline could read, which left the far side of a 174-block prison as a vertical wall. It now reads the forecast instead, at any distance. Beside a multi-storey wall the ground also aims at the building's base rather than the average of every storey, which had raised a 30-block mound.
• The ground under a tall structure now rises as a hill, not a stepped pyramid. The blend's run is sized from its rise (two and a half blocks of run per block of climb, and never less than sixteen) and its contours are wobbled by seeded noise, so a prison forty blocks above its plain gets a hundred-block slope instead of a terraced ramp.
• The city keeps off the whole slope, not just the structure. The ground reserved around a structure now reaches as far as its blend does, sized from its rise, so no house is planned where the hill will rise around it and no road runs into the hill's wall. A flat village still reserves one chunk past its footprint.
• A structure that sinks itself below the surface no longer sits in a one-block trench at a sea-level plain: the ground under it may now settle to sea level itself, which is a dry beach in CityWorld, rather than stopping one block above it.
• A structure that cuts its own volume out of a hill can be declared shave in cityworld:structure_fit: the plan is lowered to the storey the hill cuts into inside its box and feathered back to natural ground outside it, only ever lowering and never below the waterline. Set for Cataclysm's acropolis.

Fixed

• The minute-long stall next to a large modded structure is gone. Planning a city block that a structure reservation cuts through (Cataclysm's acropolis keeps the city 12 chunks away) could take over a minute and freeze the server with it. A multi-chunk building's flood fill kept re-entering chunks the reservation had refused, planning a fresh lot each time — exponentially many times. It now stops at the reservation. On the seed it was reported from, that block plans in a second instead of 38 to 72. Planning one block also no longer blocks other blocks from being planned at the same time.