I hit the object with force. Nothing happened. The mesh just stayed perfectly solid.
This post is part of my daily learning journey in game development.
I’m sharing what I learn each day — the basics, the confusion, and the real progress — from the perspective of a beginner.
On Day 69 of my game development journey, I explored Chaos physics and destruction in Unreal Engine.
What I Tried
I wanted to create a simple destruction effect.
I applied force to a mesh expecting it to break apart.
But nothing happened.
The object behaved like a normal Static Mesh.
No cracks. No pieces. No destruction.
What Confused Me
Why didn’t the mesh break?
Is Chaos enabled automatically?
Why do we need Geometry Collections?
Why can’t a normal Static Mesh fracture?
It looked like destruction should work automatically.
But it doesn’t.
What Finally Clicked
Chaos destruction does not work directly on Static Meshes.
The mesh must first be converted into a Geometry Collection.
A Geometry Collection stores the fractured pieces and allows Chaos to simulate each piece as a rigid body.
Without this step, Chaos has nothing to simulate.
Static Mesh → solid object
Geometry Collection → breakable object
Chaos doesn’t break meshes automatically.
The mesh must be prepared for destruction first.
Practical Fix
- Convert the Static Mesh into a Geometry Collection
- Open Fracture Mode in Unreal Engine
- Apply fracture patterns to generate pieces
- Enable Simulate Physics for the Geometry Collection
- Apply forces or impacts to trigger the break
Performance Note
Too many fracture pieces can hurt performance.
Use clustering to group fragments together so objects break in controlled stages.
Simple meshes usually perform better in destruction systems.
One Lesson for Beginners
- Static Meshes cannot fracture directly
- Geometry Collections are required for Chaos destruction
- Fracturing happens before physics simulation
- Too many pieces can affect performance
- Test physics stability early
Chaos is more than just destruction.
It’s a full physics system inside Unreal Engine that allows objects to react dynamically instead of staying static.
Slow progress — but I’m building a strong foundation.
If you’re also learning game development, what was the first thing that confused you when you started?
See you in the next post 🎮🚀
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