v0.7.0 for Minecraft 1.21.4

Tunnel Bore for Minecraft 1.21.4 (Fabric) - one of the most popular modded versions. Same features as the base 1.21 build. Requires Fabric Loader + Fabric API on MC 1.21.4; drop the jar into your mods folder alongside Fabric API.

v0.7.0 - Paint to mark

Mark big areas fast: with Mark Mode on, HOLD left-click and sweep the crosshair across blocks (look around or just walk along) to paint the whole area, instead of clicking block by block. Adjacency still applies, so it paints outward from your existing selection. Requires Fabric Loader + Fabric API on MC 1.21.

v0.6.0 - Natural mining speed + keybind fix

Boring no longer happens instantly. You now mine the block you're looking at at normal vanilla speed, and the moment it breaks the whole layer bores and the selection advances. Hold left-click to chew straight down (or along a tunnel) layer by layer at that natural pace. Clear Selection keybind moved from C (which conflicts with other mods) to Delete - rebindable in Controls. Requires Fabric Loader + Fabric API on MC 1.21.

v0.5.0 - Fluid layer advancement

Boring now feels fluid: the red highlight jumps to the next layer the instant you break, so you can dig straight down or tunnel in a straight line by clicking rapidly without waiting on the server. The highlight snaps back only if the bore can't continue (bedrock, broken pickaxe, or wrong tool). Requires Fabric Loader + Fabric API on MC 1.21.

v0.4.0 - Clear Selection

Adds a Clear Selection keybind (default C, rebindable in Controls > Tunnel Bore). Press it any time to wipe the current selection. Requires Fabric Loader + Fabric API on MC 1.21.

v0.3.0 - It bores!

The tunnel bore is functional. Mark a flat area (V, left-click), tap V to exit Mark Mode, then break any marked block: the whole layer mines, drops go straight to your inventory, your pickaxe takes durability, and the selection advances into the face you broke so you can keep boring. Full vanilla tool rules (tier, Fortune/Silk Touch, Unbreaking) and safe stops at bedrock / before the pickaxe breaks. Requires Fabric Loader + Fabric API on MC 1.21.

v0.2.1 - Fix marking (mixin collision)

Bugfix: marking works again. v0.2.0's break-suppression mixin was accidentally eating the left-click mark event. Left-click marks (never breaks), right-click unmarks, and holding left-click still won't break. Requires Fabric Loader + Fabric API on MC 1.21.

v0.2.0 - WorldEdit-style marking

Marking reworked: LEFT-CLICK marks a block (never breaks it), RIGHT-CLICK unmarks it. New marks must touch your existing selection (contiguous). Block breaking is fully disabled while Mark Mode is ON. No boring yet - that's next. Requires Fabric Loader + Fabric API on Minecraft 1.21.

v0.1.0 - Foundation preview (marking + highlight)

Early preview build. Mark Mode (default key V) + red block highlighting work. The actual boring/mining is NOT implemented yet. Requires Fabric Loader + Fabric API on Minecraft 1.21 - drop this jar into your mods folder alongside Fabric API.