Axe To The Max!

The tree chopper uses a breadth-first flood fill through blocks tagged minecraft:logs, so vanilla trees and modded trees that use those tags are both handled. Dead trees and trees with leaves are covered in nearly every case. Holding Sneak and breaking a log brings the whole tree down at once, and the chopper is configurable, with settings that can be changed in-game from a settings screen.

Two optional fairness mechanics are available. Durability per log charges the axe one point for each log chopped, so a 14-log tree costs 14 durability, the same as breaking the logs by hand. Break time per log makes chopping take as long as breaking each log manually with the current axe tier, so a 14-log tree takes the normal break time for each log, and switching to a faster axe speeds it up in proportion. Starting a break without Sneak held lets the timer run first, and the chopper does not engage.

Logs placed by a player are permanently tagged as player-placed, and the chopper never fells through them, so a build is not taken down by accident. The tags are shared globally across players, so a log placed by one player cannot be bypassed by another. Settings are stored per player and persist across restarts and sessions. The data is kept server-side through SavedData, and the config syncs at client login. The mod is in work in progress, and some features still need testing for full multiplayer support.