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Body: Gravity Scaling

See original GitHub issue

Is there a way to set the gravity scale?

If not, I would like to suggest something like:

gravityScale: 2 would make it have twice the gravity (falls twice as fast)
gravityScale: 1 would be the default (runs as it currently does)
gravityScale: 0 would make it so gravity doesn’t affect the body (at least visually)
gravityScale: -1 would make it have an inverse of the default gravity (like a balloon with helium)
gravityScale: -2 would make it have twice the inverse of the default gravity (rises twice as fast)

I am no expert on the math, but wouldn’t adding * gravityScale to these lines in the update be the solution? https://github.com/liabru/matter-js/blob/63b02cfbeebe93d28082504f5e89e93f98739743/src/body/Body.js#L581-L583

Issue Analytics

State:
Created 6 years ago
Comments:6 (2 by maintainers)

Top GitHub Comments

3reactions

kindidcommented, Dec 19, 2017

I’ve added in the gravity scale and it’s doing just what I want it too.

0reactions

liabrucommented, Dec 19, 2017

@kuiash I suggest just disabling the built in air friction and gravity and then applying your own forces as needed.

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