Codex Processing Tree Harvester

Tree Harvester

The Tree Harvester window: 1 input slots, 3 output slots, 4 upgrade slots, 5 energy and tank bars, 6 value, status and redstone lines.

The Tree Harvester fells whole trees in front of it, piece by piece, collects logs, saplings, sticks and apples, and plants a new sapling on the stump. It is a tier I machine: a wood and charcoal supply that runs by itself.

The area

The harvester searches an area of 11 × 11 blocks directly in front of it (the side that faced you when you placed it), at the height of the machine itself. A tree counts when a log stands there with no log below it: the stump. Plant the saplings on the same level as the harvester stands.

It visits one spot per action, row by row in a snake line, and waits terrain.fieldInterval (default 10, allowed 1–200) ticks between two actions. Finding a tree costs nothing.

Felling a tree

1. When it finds a stump, the harvester collects the whole tree once: every log connected to the stump (diagonals too), up to 512 logs within 8 blocks around and 32 blocks above the stump.
2. It cuts one piece every terrain.fieldInterval (default 10, allowed 1–200) ticks: first the natural leaves that touch the logs (at most 64), then the logs, each from the top down. Leaves placed by players are never cut.
3. When the last piece is gone, it plants the first sapling from its sapling slots that can grow on the stump's spot.
4. Then the search goes on.

While a tree is being cut, the search pauses. If the world is saved and loaded in between, the tree is collected again from its stump.

The screen

• Energy bar on the left.
• Three sapling slots and the tool slot.
• Nine output slots, and on the right edge the Range Upgrade slot (top) and the Yield Upgrade slot.
• The status line and "Pieces left": how many leaves and logs of the current tree remain.

The sapling slots take only saplings. The tool slot takes any tool with durability: its enchantments count for the drops (Fortune gives more saplings and apples, Silk Touch gives the leaves themselves), and it never wears out.

Energy

The harvester holds 100,000 E and takes up to 4,000 E per tick on every side, from a Pipster cable, a generator next to it or any FE or Team Reborn Energy source. While it searches it uses 20 E every tick. Cutting costs 600 E per log and 60 E per leaf block; a piece waits until the buffer holds its cost.

Upgrades

Upgrade	Up to	Effect per upgrade
Range Upgrade	2	the area grows by 2 blocks on every side (11 × 11 → 15 × 15 → 19 × 19), 30 % more energy per piece
Yield Upgrade	2	15 % of the pieces give one more of each drop, 60 % more energy per piece

Upgrades work at once. The yield bonus applies to logs, sticks and apples, never to saplings, so no tree multiplies its own saplings. Like all chances in QNet it comes in a fixed rhythm, not by luck. Upgrades are made in the Quantum Facility.

Rules of the world

• The harvester changes the world as the player who placed it: spawn protection, the world border and claims of Open Parties and Claims or FTB Chunks protect against it like against that player. Protected pieces are skipped.
• Spots in chunks that are not loaded are skipped; the harvester never loads chunks.
• With the game rule doTileDrops off, felled pieces give nothing.
• The server can switch all field machines off with terrain.fieldMachines (default true).

Automation

• Pipes, hoppers and other mods can put saplings, a tool and upgrades in from every side; each slot takes only what it accepts.
• Items can only be taken out of the nine output slots.
• The drops of a piece go in only when all of them fit, counting a possible yield bonus. Otherwise the harvester waits with that piece, and nothing drops on the ground.

Redstone

The harvester has no redstone mode. A Grid Monitor that pauses machines can stop it.

What the status line says

Status	Meaning
Cutting a tree	A tree is being felled. The same text shows while a piece waits for energy or for room in the outputs: check the energy bar and the outputs when "Pieces left" stops going down.
Working	It is searching and has energy.
Idle	It is paused, for example by a Grid Monitor.
Waiting for energy	The buffer is too low for the search: even though finding a tree costs nothing, the buffer must hold the cost of one log.
Area not loaded	No spot of the area is in a loaded chunk.
Farms are switched off on this server	The server setting stops all field machines.

Building it

The Tree Harvester needs iron plates, an iron axe, two logs, a stonecutter and redstone.

	Iron Axe
Logs	Stonecutter	Logs	→ Tree Harvester
	Redstone Dust

When you break it, it keeps its energy; the items in its slots and the upgrades drop. Placed again, it works for the player who placed it.

In the world

While it works, the saw blade at its front spins. Every felled piece breaks with its normal particles and sound, and the harvester gives off a little light.

Tip

Trees that fit Plant single saplings in a grid with a few blocks of space: oak, birch, spruce and acacia grow from one sapling. Keep one kind of sapling in the slots: the harvester plants the first one that can grow on the stump's spot. Big trees from four saplings (dark oak, giant spruce and jungle) are felled, but only one sapling is replanted.