Question 1

How do I set up JoltPhysics.js with Vite?

Accepted Answer

Import the WASM flavor and use a locateFile function to handle the WASM asset. For example, import initJolt from 'jolt-physics' and pass the WASM URL, as shown in the README's Vite example.

Question 2

JoltPhysics.js vs Cannon.js: which is better for web games?

Accepted Answer

JoltPhysics.js offers more advanced features and performance through WASM, but Cannon.js is simpler and more established for basic 3D physics. Jolt is better for complex simulations requiring determinism or native parity.

Question 3

How to avoid memory leaks in JoltPhysics.js?

Accepted Answer

Always call Jolt.destroy() for objects you create and manage reference counts with AddRef() and Release() for classes like Shape. The README includes a proper cleanup example to follow.

Question 4

Can JoltPhysics.js be used for 2D games?

Accepted Answer

Yes, but it's overkill for simple 2D physics. Jolt is optimized for 3D simulations, so for 2D projects, lighter engines like Matter.js or Box2D might be more efficient.

Question 5

What's the difference between WASM and asm.js builds?

Accepted Answer

WASM builds offer better performance and support multithreading but require modern browsers. asm.js is more compatible with older browsers but may be slower. Choose based on your target audience's browser support.

Question 6

How to enable multithreading in JoltPhysics.js?

Accepted Answer

Import a multithreaded flavor like 'wasm-compat-multithread' from npm. Note that this increases bundle size and requires browser support for Web Workers, as mentioned in the build options.

JoltPhysics.js

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