EMI Tree Tabs

Track more than one EMI recipe tree at a time, and get a crafting list that spans all of them. Minecraft 1.20.1 · Forge · requires EMI 1.1+ · client-side only EMI keeps exactly one crafting tree in memory, so opening a second one silently throws away the first. This mod keeps a list of them and swaps the right one into place when you change tab — EMI's own tree screen does all the drawing and editing, so every tree behaves exactly as you expect.

What it does

Tabs

Every tree you open becomes a tab instead of replacing the last one. Hold Shift while opening to invert that for one click.

• Live progress per tab — grey (nothing gathered), amber (partly stocked), green (you have   everything), checked against your inventory on a timer
• Fork a tree with + or Ctrl+D — same goal, independent resolutions, so you can compare two   routes to the same item side by side
• Rename so "Reinforced alloy for the smelter" isn't just another iron ingot icon
• Per-tab viewport — each tab keeps its own pan, zoom and batch count
• Per-tab view/craft mode — mirrors EMI's own mode button, but per tree. Only trees in crafting   mode feed the crafting list, so you can keep a dozen open for reference and still see only what   you're actually building
• Tabs survive restarts and resource reloads — stored as their goal recipe plus the resolutions   you picked, then rebuilt

Crafting list across every tree

With more than one tree in crafting mode, EMI's crafting list draws from all of them, with duplicate recipes and materials merged into single entries. Trees are costed against a shrinking pool rather than each getting your whole inventory. Two trees each needing 10 iron with 10 in the chest correctly report 10 still needed, instead of both declaring themselves satisfied. Reorder tabs to change which tree gets first claim.

A real second sidebar panel

The mod adds a Crafting page type to EMI's own sidebar picker, alongside Index, Craftables and Favourites. Add it as a page or a subpanel on any sidebar and the crafting list lives there, leaving your favourites alone. The list is split into To craft, Shared materials (wanted by two or more trees) and one

section per tree, with a rule between sections and titles you can click to fold.

Controls

All on EMI's recipe tree screen.

Action Binding

Switch tab Left click, or Ctrl+Tab / Ctrl+Shift+Tab

Jump to tab 1–8, or last Ctrl+1 … Ctrl+8, Ctrl+9

Reorder Drag a tab sideways

Rename Right click a tab, or F2

View ⇄ craft mode Ctrl+click a tab

Close Middle click, the ×, or Ctrl+W

Reopen closed tab Ctrl+Shift+T

Fork the current tree

• button, or Ctrl+D

Scroll the strip

Mouse wheel over the bar

Setting up the second panel

1. In EMI's settings, add a page or subpanel to a sidebar
2. Choose Crafting from the picker That's it. Once a Crafting panel exists the favourites sidebar stops carrying the crafting list, so it isn't shown twice. If the page type is missing from the picker, the mod could not register it — check latest.log for

a warning from emitreetabs, and it will fall back to sharing the favourites panel.

Config

In game: Mods → EMI Tree Tabs → Config, which needs Cloth Config. That is a soft dependency — without it the mod works identically and you edit config/emitreetabs.json by hand. Edits to that file are picked up within a couple of seconds without restarting.

Key Default Meaning

enabled true Off means no tab bar and stock EMI behaviour

openInNewTab true New trees open as a new tab; Shift inverts per click

persistTabs true Save open tabs between sessions

showProgress true Colour tabs by inventory progress

progressIntervalMs 500 How often to recheck progress

barAtBottom false Move the tab strip to the bottom of the tree screen

maxTabs 32 Each tab holds a whole material graph, so this is the main lever on memory

closedTabHistory 16 How many closed tabs Ctrl+Shift+T can restore; 0 disables

keyboardShortcuts true Master switch for the shortcuts above

aggregateCraftingFavorites true Crafting list draws from every tree in crafting mode

sharedCraftingInventory true Trees claim materials in tab order rather than each assuming the whole inventory

groupCraftingList true Split the crafting list into sections

showGroupSeparators true Draw a rule between sections

collapsibleGroups true Click a section title to fold it

craftingInFavorites true Allow the favourites sidebar to also carry the crafting list. Ignored once a Crafting page is placed, since it would otherwise show twice

craftingPanelSide NONE

Fallback: take over one side's Favourites panel

Known limitations

• Section titles take a full row. EMI's sidebar is a fixed 18px grid and hover detection maps   mouse position back through that same arithmetic, so giving a title only its text height would   mean overriding EMI's layout in several places at once and risking clicks landing on the wrong   item. The separator lines are free — they're drawn in the gap — but text is not.
• Sections align to rows, not pages. EMI paginates sidebars, so a section can straddle a page   break. Padding to page boundaries would waste a lot of slots in a narrow sidebar.
• A merged tree can only hold one recipe per ingredient, which is why there is no single   combined tree view. Two tabs smelting iron differently could not both be honoured in one.

Compatibility

Hooks EMI's internals rather than a public API, because EMI exposes none for crafting trees. Pinned working combination: EMI 1.1.24 · Forge 47 · MC 1.20.1. An EMI update that renames the internals listed in the source will break this, most likely as a startup error rather than a silent failure. Tested alongside EMI++ (emixx), which touches some of the same classes.

AI disclosure

The code in this mod was written by an AI assistant working from my direction. See AI-DISCLOSURE.md for the full statement.

Licence

MIT.