Dynamic Falling Tree
- By
Topple trees with realistic physics! Features dynamic tipping, fragile leaf collisions, and full configuration support via ModMenu.
Dynamic Falling Tree
Realistic tree falling physics for Minecraft 1.21.1 (Fabric). When you chop a tree, it falls over using rigid-body physics instead of instantly disappearing.
What It Does
- Chopping the base log of a tree causes the entire tree to tip over and fall using real physics simulation.
- Blocks are removed flicker-free via a
BARRIER -> AIRsequence in the same server tick. - Trees spawn impact smoke particles when they hit the ground.
- Leaves break naturally after the tree settles, with vanilla particle effects.
- Works on rootless/floating trees as well as grounded ones.
Requirements
| Dependency | Version |
|---|---|
| Minecraft | 1.21.1 |
| Fabric Loader | >= 0.16.9 |
| Fabric API | >= 0.110.0+1.21.1 |
| Sable | >= 1.2.2 |
Installation
- Install Fabric Loader for 1.21.1.
- Download Sable and place it in your
mods/folder. - Download this mod's JAR and place it in
mods/. - Launch and chop a tree.
Configuration
Config file auto-generates at .minecraft/config/treephysics.properties:
rootless_tree_detection=true
requires_axe=false
prevent_interacting_with_trees=true
rooted_dirt_generation=true
impulse_torque=2.0
impulse_force=1.5
| Option | Description | Default |
|---|---|---|
rootless_tree_detection |
Allow floating trees to fall. | true |
requires_axe |
Only trigger physics when holding an axe. | false |
prevent_interacting_with_trees |
Block placing/using items on falling trees. | true |
rooted_dirt_generation |
Generate rooted dirt under naturally spawned trees. | true |
impulse_torque |
Rotational force applied to falling trees. | 2.0 |
impulse_force |
Linear push force applied to falling trees. | 1.5 |
How It Works
- Detection: Breaking a log triggers a flood-fill search for connected logs, leaves, and attached blocks.
- Validation: The detected structure is validated as a tree (must have a root on dirt or have leaves if rootless mode is on).
- Assembly: Valid tree blocks are converted into a Sable
ServerSubLevel— a physics-backed block container with independent collision and transform. - Flicker Fix: Original world blocks are replaced with
BARRIER, then immediatelyAIR, preventing any visual flicker. - Impulse: A directional force and torque are applied based on the player's position, causing the tree to tip over.
- Impact & Decay: While falling, the server tracks velocity. Ground contact spawns smoke particles. After settling, leaves break naturally.
Technical Details
- Built on the Sable physics engine using SubLevel rigid-body simulation.
- All physics runs server-side and syncs to clients over the network.
- Singleplayer and multiplayer compatible.
- Licensed under MIT.
The Dynamic Falling Tree Team
