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planck-js

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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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## Mouse Joint The mouse joint is used in the testbed to manipulate bodies with the mouse. It attempts to drive a point on a body towards the current position of the cursor. There is no restriction on rotation. The mouse joint definition has a target point, maximum force, frequency, and damping ratio. The target point initially coincides with the body's anchor point. The maximum force is used to prevent violent reactions when multiple dynamic bodies interact. You can make this as large as you like. The frequency and damping ratio are used to create a spring/damper effect similar to the distance joint. Many users have tried to adapt the mouse joint for game play. Users often want to achieve precise positioning and instantaneous response. The mouse joint doesn't work very well in that context. You may wish to consider using kinematic bodies instead.