EZvac

The realism update. EZvac 2.0 adds weather, humidity and a "feels like" temperature to every room, plus dehumidifiers, humidifiers, remote sensors and configurable sounds. Upgrading from 1.9, or any 1.x release, is a jar swap: nothing needs converting.

2.0 was tried out in five prereleases on a live server first (ALPHA-2.0-P1 to P5). If you ran one of those, this is a drop-in upgrade.

Thanks to Cole (@colebolebole), who ran every pilot on his server, for his huge help hunting bugs and for the ideas that shaped 2.0.

Upgrading from 1.9

1. Back up plugins/EZvac/ (EZvac keeps backups too, but a copy of your own costs nothing).
2. Stop the server and replace the EZvac jar with EzVac-ALPHA-2.0.jar.
3. Start it again. On the first start:
   • hvac.yml: moves to format 6. Your 1.9 file is kept as hvac.yml.format5.bak.
   • config.yml: gains every new setting with its comments. Your own settings are not changed, and the old file is kept as config.yml.before-ALPHA-2.0.bak.
   • Rooms: systems, targets and room temperatures carry on as they were. Each room's humidity starts at the outdoor level and settles from there.

Going back: 1.9 refuses a format 6 file and leaves it untouched. To downgrade, stop the server, restore hvac.yml.format5.bak as hvac.yml, and put the 1.9 jar back. Anything built in 2.0 is lost.

Weather, humidity and feels-like

• Weather: rain and thunder cool the outdoor air (6 °F and 9 °F by default) and narrow the day/night swing; snow cools a little.
  • The change eases in over about two in-game hours instead of switching at once.
  • Deserts, savannas, badlands, the Nether and the End never get weather.
  • The HUD, idle drift, ETAs, thermometers and pools all follow.
• Humidity: every air room has it, shown as RH and simulated as moisture.
  • Outdoors it comes from the biome: deserts are dry, jungles and swamps humid. It rises at night and climbs toward 100% in rain.
  • Indoors, cooling dries the air, heating lowers the RH, and a heated pool hall gets muggy.
• Feels like combines temperature, humidity and wind. The HUD's comfort word, bar and colour now follow it in air, so a humid 84 °F room reads Hot.
• Spot-to-spot variance: readings differ a little from place to place, about ±0.5 °F in a room, ±1.5 °F outdoors, and less in pools. It changes gradually as you walk and drifts over a few in-game hours. Thermostats keep the room's own value, so systems never chase it.

New devices

Dehumidifiers and humidifiers

• No system needed: they work on the room of the system around them, or on their own space anywhere else (a shed, a basement).
• Sign controls: click the sign to step the setpoint, sneak-click to switch the unit on or off.
• Dehumidifier tank: it fills with the water removed; a full tank waterlogs the grate while it empties.
• Humidifier water: it is plumbed, so it never runs dry, and its slab bubbles while it runs.
• Several units in one space share one humidity.
• "Air too cold": a dehumidifier in air too dry for its coil shows this, as in snowy biomes.

Sensor hubs

• Capacity: a hub shows up to nine sensors, three to a page.
• Paging: click to turn the page; sneak-click to switch auto-flip on or off.
• Weather sensors need open sky, like a rain gauge.
• Pressing a sensor shows its reading in chat and never sends redstone.

Also new

• Thermostat power switch: sneak-right-click a thermostat sign to switch its system off or on.
• Configurable sounds: every sound is a "sound volume pitch" line under audio.sounds. Resource-pack sounds work, and [] silences an event.
  • Vent airflow: air vents of running systems now softly hum near players.
  • Hum settings: if you tuned audio.hum-volume / audio.hum-pitch, your hum carries over into the new lines.
• Placeholders: %ezvac_feels_like% (_f, _c), %ezvac_humidity% and %ezvac_weather%, and HUD tokens {feels}, {humidity} and {weather}.
• The duct tool is now /hvac duct-tool. /hvac tool and your existing tools still work.

Changed

• Faster on big servers: signs are only rewritten near players. At 1,000 running rooms EZvac's tick cost dropped from about 5.5 ms to about 2 ms.
• Sign lines always fit: lines are measured the way the game draws them, so long labels are shortened instead of wrapping and vanishing. Hanging signs work too.
• A typo in a new config section no longer stops EZvac: that section falls back to its defaults, and the log names the setting to fix.

Verified

• Tests: 217 automated tests, including real save files written by 13 releases from 1.0 to 2.0 Pilot 5.
• Upgrade, on Purpur 1.21.1: a 1.9 world upgraded from both a clean save and a crash save, with every device back and the original kept. 1.9 refused the 2.0 save and left it untouched.
• Load: 1,000 running rooms, timed against 1.9.
• Robustness:
  • hard kills mid-run;
  • an unreadable save record, which was set aside;
  • units, sensors and hubs destroyed by explosions or without a break event.
• In-game: each pilot ran on a live server before this release.

The jar below was built by GitHub Actions from acf6d7c. Full details are in CHANGELOG.md.