Dynamic style collisions for Kinematic Objects?

[Frankie_Freeland]

I’m trying to make a program that simulates planets and gravity and I’m using a method of simulating gravity explained in this response to a post I made a while ago. This works just fine, the only problem is it only works for kinematic objects while I need dynamic type collisions for when a object collides with the planet. Is there any way to make this work or alternatively to change this code to work with dynamic objects?

[Mathias_Westerdahl]

@Mathias_Westerdahl

As suggested, you are better off calculating this yourself.
Set the gravity to 0, and calculate a force to be applied for each object in the update function.

I still think this is the most viable solution in your case.

[Mathias_Westerdahl]

@Pawel

Hmm, just thinking out loud, but isn’t such effect possible with joints?

Also, this is a very simple approach that might work well!
Essentially a variation of the forces I suggested.

[Pawel]

Pendulum physics

Perhaps this could be helpful?

Also - @sergey.lerg - I think you might have an experience with gravity and planets, since I remember the mobile game with this you were working on - am I right?

[sergey.lerg]

Yes! I’ve made a planet game https://youtu.be/sK4pJ8A3YS4

Used my box2d extension. Pretty straightforward. Dynamic type for planets, applying forces based on their distance to each other. Like a normal gravity formula.