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Question by pbcrazy · Dec 13, 2012 at 12:18 AM · rotationgravityaxisforcesspin

Possible to create axis centered gravity?

I suppose that little question may be confusing, so let me explain.

Most video game physics takes for granted that you are on the surface of a planet, or something similar, so gravity every where on the map has the same vector.

But I want to make a simulation of a space craft, based on realistic technology. In space, obviously there is no gravity, so on a space craft it must be simulated if you want any. My space craft in particular makes use of centripetal forces, where the personnel area of the craft is a spinning drum, and people walk around the curved surface of the drum.

The effect I need, in short, is that gravity "flows" outward from an axis of rotation. So say the z-axis is the axis of rotation, everything would try to fly away perpendicular to it.

Is this possible?

Example, this spacecraft from the movie "Mission to Mars": https://www.youtube.com/watch?v=a8V6jTW3xTQ

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Answer by HammockHead · Dec 13, 2012 at 02:22 AM

you could disable gravity, then use ray cast to determine the direction the center of gravity is relative to your object then add force in that direction

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