Tree Simulator

The Tree Simulator is a block that automates resource production. Instead of planting trees in the world, you insert a resource sapling and it simulates the tree growing and being harvested on a timer.

Crafting

   
ABA
AAA

• A = Cyan Terracotta
• B = Dirt

Interface

Open the Tree Simulator by right-clicking it. The GUI has:

Slot	Purpose
Input (left)	Place a Resource Sapling here
Axe (middle-bottom)	Place an axe to enable and speed up production
Output (right, 9 slots)	Harvested resources appear here

A progress arrow shows how far along the current growth cycle is.

How Production Works

1. Insert a resource sapling into the input slot.
2. Insert an axe into the axe slot.
3. The simulator ticks. When growTicks reaches maxGrowTicks, a harvest occurs.
4. Harvest outputs are placed into the output slots.
5. The cycle resets and repeats.

If the output slots are full, production pauses until space is available.

Default Outputs per Harvest

The default Tree Simulator recipe (auto-generated) produces:

Item	Chance	Rolls
Log (matching tree type)	30%	1
Leaf Fragment	100%	1
Leaf Fragment (bonus)	leafDropChance × 0.5	1–4
Sapling (same type)	saplingDropChance	1

You can override this with a custom recipe — see Tree Simulator Recipes.

Axe Speed

The axe placed in the axe slot acts as a multiplier on the growth speed. A higher multiplier means maxGrowTicks is divided by a larger number, so cycles complete faster.

Axe	Default Multiplier
Wooden Axe	1.0×
Stone Axe	2.0×
Iron Axe	3.0×
Golden Axe	6.0×
Diamond Axe	4.0×
Netherite Axe	5.0×

Axes take 1 durability damage per harvest cycle. When an axe breaks it is automatically removed. Axes with the Unbreakable component will never break.

Configuring Axe Speeds

You can change these multipliers in the Axe Speed Config.

Automation

The Tree Simulator supports hopper automation:

• Top/sides → items enter the input slot
• Bottom → items exit the output slots

The axe slot cannot be automated (hopper access is restricted).