1.0.1

First release. For Minecraft 1.20.1, Forge, and The Lost Cities 7.4.12.

Where to install it

• Dedicated server. Everything that matters runs here: reading .json5 files, checking your files as they load, the improved error messages, and all /lcdev commands.
• Client. Only the Lost Cities menu fixes are client-side. Installing it on the client is optional, and a client without it can still join a server that has it.
• Singleplayer. One install covers both.

Better error messages

• When a building is broken, the error now names that building and its chunk, instead of naming whichever nearby chunk happened to ask about it. On a test pack with three broken buildings, that turned 78 similar-looking failures into three named ones.
• Each caught error gets a second line with the profile, world style, city style, building, and floor and cellar counts.
• A missing palette character is reported with its character code and official name, so you can identify symbols a console cannot print.

Your files are checked before the world loads

Nine checks run as your files load, and anything that will fail is listed with a file name and a line number. They cover floor ranges that leave a level with nothing to build, conditions that can never match, invalid block names, weighted lists that do not add up, layers that are the wrong size, and more.

Nothing is blocked from loading. You are told, and the game carries on.

Comments in your files

• Comments and trailing commas now work in Lost Cities files and in profiles.
• Files can be named .json5, which stops your editor underlining comments as errors.
• If a .json and a .json5 of the same name both exist, the .json5 is used and you are told which file was ignored.

New commands

• /lcdev report shows what Lost Cities selected for the chunk you are standing in, including which part was chosen on each level.
• /lcdev char shows what a palette character turns into, and /lcdev block shows which characters produce a given block.
• /lcdev in <file> char or block asks a specific file instead of your current chunk, so it works anywhere, with tab completion.
• Characters can be entered as U+0047 when you cannot type them into chat.

Sphere worlds no longer crash on a broken file

Normal Lost Cities worlds log a failed chunk and carry on. Sphere worlds had no such protection, so the same mistake could take the server down. On spheres, cavernspheres and space, those errors are now logged instead.

Tested with the same pack and seed: 21 crashes and a dropped connection before, none after, with all 338 errors logged and the server still running. The world generates identically either way.

Optional fixes, off by default

These change world generation, so they are opt-in. Enable them individually in config/lostcities_devtool-common.toml.

• belowpart now checks the part below, as the name suggests. It currently behaves identically to inpart, so a building using it fails every chunk it stands in.
• streetblocks.parts.full can now actually be selected. It was never chosen before, so a full street shape placed nothing.

Menu fixes, on by default

These cannot change world generation.

• Right-clicking the profile button steps backwards through the list, so overshooting the profile you wanted no longer means cycling all the way around.
• The Cities button stays where it belongs when you resize the window.
• Pressing Customize after playing a world no longer crashes the game.

Known issue in Lost Cities itself

The palette lostcities:bricks_desert_redsand contains an old-style block name, minecraft:red_sandstone@2, which is not valid in modern Minecraft. The whole palette fails to load as a result, not just that one entry.

Nothing in Lost Cities 7.4.12 uses that palette, so this only affects you if you point at it yourself. DevTool's file check reports it with the file name and line number.