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planck

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2D JavaScript/TypeScript physics engine for cross-platform HTML5 game development

github.com/piqnt/planck.js

piqnt/planck.js

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## Weld Joint The weld joint attempts to constrain all relative motion between two bodies. See the Cantilever.js in the testbed to see how the weld joint behaves. It is tempting to use the weld joint to define breakable structures. However, the Planck.js solver is iterative so the joints are a bit soft. So chains of bodies connected by weld joints will flex. Instead it is better to create breakable bodies starting with a single body with multiple fixtures. When the body breaks, you can destroy a fixture and recreate it on a new body. See the Breakable example in the testbed.