Blender Simulation
Physics in Blender 5.2 - rigid bodies (density mass, shapes, bake to keys), classic...
Install
npx skills add EL4CTEO/blender-skills --skill blender-simulation -g -a claude-code -y- Repository
- EL4CTEO/blender-skills651
- Category
- Engineering
- Updated
- 5d ago
- License
- MIT
- Context cost
- Lightabout 1,356 tokens
- Runs scripts
- Yes, review before use
What it does
Physics in Blender 5.2 - rigid bodies (density mass, shapes, bake to keys), classic cloth presets and pinning, new node-based Cloth/Hair Dynamics (XPBD, Collider, effectors), Mantaflow fluids, hair curves, GN simulation zones, headless baking. Use for destruction, drapes, flags, falling objects, liquids, smoke, hair motion.
Simulation
The execution model is in blender-core. Procedural sim zones are in blender-geometry-nodes.
One call
scripts/sim_setup.py -- --rigid --active Crate1 Crate2 --passive Floor --density 500 --frames 1 120 --bake --to-keys
scripts/sim_setup.py -- --cloth Flag --preset cotton --pin Pin --colliders Pole --bake
scripts/sim_setup.py -- --gn-cloth Sheet --colliders Table --set Bendiness=0.5 Stretchiness=0.1 --bake
--bake steps through every frame in order (this works headless for point caches and GN simulation zones) and reports final positions and min_z, so you can verify contact. --to-keys turns rigid-body motion into keyframes for engines.
Choose the solver
| Need | Use |
|---|---|
| Falling/stacking/destruction | Rigid Body (Bullet). Pre-fracture with Cell Fracture (extension) or GN Voronoi |
| Clothing, flags, drapes (production-proven) | Classic Cloth modifier + Collision modifiers |
| New node-based cloth/hair, custom forces, procedural setups | Cloth Dynamics (Experimental) / Hair Dynamics assets (5.2, XPBD) |
| Liquids, smoke, fire | Mantaflow fluid domain + flow/effector (fluid.bake_all) |
| Hair grooms | Curves objects + hair node assets (procedural_hair_node_assets), Hair Dynamics for motion |
| Growth, trails, custom per-frame logic | GN Simulation zone |
| Soft jiggle for games | bones with spring/jiggle in-engine, or Wiggle-style constraints baked to keys |
