Horizonmatica: versions and changes

Added

• Easy place: look at a ghost block and its block is taken in hand; hold the right mouse button to place it, facing the right way. While it is on, only the schematic's blocks can be placed. Its own air place option places ghost blocks with no neighbour (/hm easyplace, Placement tab).
• Keys tab: bind any action to a key, including ones that had no key before: rotate, mirror, move to me, show or hide, select, unload, area corners and more.

Changed

• Pinned to Horizon Nightly 2026-11-08 (fdc87ae): two hook targets moved there (play_mouse to game/play_input.rs, pauses_game to game/pointer_capture.rs).
• Keys are bound on the Keys tab, no longer in Options > Mods. Keys you changed there are kept as the starting point.
• Credits moved from a tab to a button at the top left of the menu.

Fixed

• Area corners (/hm pos1, /hm pos2, the Save tab, the selection tool) are limited to positions a world can have; coordinates outside are refused with a message. The area's size and block count are computed with checked, wider arithmetic, so extreme corners can no longer overflow and give a wrong size to /hm save and its size limit.
• Moving, turning or mirroring a placement (/hm origin, /hm move, /hm rotate, /hm mirror, keys, wheel) is refused when it would reach outside the world, instead of overflowing.
• Schematic files whose regions lie extremely far out, or whose sizes multiply past 64 bits, are refused when read instead of overflowing.
• Layer shifting saturates instead of overflowing.
• At 720p the lower rows of the Placement tab ran under "Done"; that side now scrolls.
• A printer click on a server no longer counts as a click of the selection tool when the tool is in hand.

Built for Horizon Nightly 2026-11-08 (fdc87ae).

Added

• Highlights: mark missing and wrong blocks through everything, however far away, for all items or just one you pick in the material list (/hm highlight).
• Pick block: middle-click a ghost block to take that block in hand.
• Several placements at once: select, show, hide, lock and unload each.
• Select an area with the selection tool (a stick) and save it as a .litematic (/hm save).
• Copy the material list to the clipboard as a table for spreadsheets (/hm materials copy).
• Command completion for /hm in chat.
• A wiki in docs/wiki: every tab, button and key, with the matching command.

Changed

• Air place is off by default.
• Printer without air place: only blocks next to a real block whose face you can see are tried, blocks that can't be placed from where you stand aren't tried again until you move or a neighbour changes, and in each layer the item in hand comes first.
• Logs, froglights and other pillars get their direction from the clicked face alone. Without air place they need a real block on the matching side, and the printer's note says so.
• Pinned to Nightly 2026-11-04 67dad0d (was c9d474d).

Fixed

• The printer places bamboo, crops, stems, berry bushes and vines. They count as correct at any stage of growth, and the material list includes them.

Built for Horizon Nightly 2026-11-04 (67dad0d, hook API 359).

First release in the registry.

• Loads .litematic, .schem (Sponge v1–v3), .schematic (MCEdit, 1.12 ids) and structure .nbt; older files are upgraded with Horizon's data fixer
• Ghost overlay with real block models, see-through mode, verifier colours and layer modes
• Placements remembered per world and dimension; move mode, rotate, mirror
• Own menu screen (M) and a material list with item icons
• Printer: places missing blocks within reach, checked against the game's own placement logic; the camera never moves

Since 0.1.0 on GitHub: loading another schematic no longer shows the previous one's blocks.

Built for Horizon Nightly 2026-11-01 (c9d474d, hook API 80).