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[Marvin Fröhlich]

I don't know, if it's already possible. But I could use gravity in XPAL to make the FPIH behave like a human. Gravity is needed to make jumping and falling work with the FPIH.

If it's already possible with XPAL, then how. And if it's not, is it hard to implement, Amos?

Marvin

[hawkwind]

Needs to be configurable, at least on / off.  There are times I would like gravity and times the endless collisions with the floor would be a performance hit

['n ddrylliog]

"That I'm on it".

That was that, Marvin ? 

OK, more seriously I'm looking for a simple way to abstract "forces".

Should a "force" be represented as a class which is in fact a step listener, and which computes the force magnitude and direction each step, from various parameters ? Is that alright for you ?

(For those not seeing the connection with the gravity, yes the gravity is a force. Well, several, but one's sufficient for what we're doing.)

[Marvin Fröhlich]

Should a "force" be represented as a class which is in fact a step listener, and which computes the force magnitude and direction each step, from various parameters ? Is that alright for you ?

Well, if that's necessary...

My naive imagination of a solution was to just use some kind of setGravity() method and use an instance of "Gravity" (with an optional constructor parameter of 9.81f) to the SimulationEngine. All Collideables, that have a Body attached would then be influenced by that gravity force.

More general forces could be for a later time (as you say).

I don't know, if it makes sense to limit the gravity influence to a subset of the bodies in the SimulationEngine. I guess, it wouldn't, since if you want to have regions with differing gravity, you would simply use another instance of SimulationEngine or set the Gravity instance to something different.

Marvin

['n ddrylliog]

Yeah, that could be easily implemented.

All Collideables, that have a Body attached would then be influenced by that gravity force.

Actually, it's the other way round. Bodies have attached Collideables.

[Marvin Fröhlich]

Yeah, that could be easily implemented.

All Collideables, that have a Body attached would then be influenced by that gravity force.

Actually, it's the other way round. Bodies have attached Collideables.

But my solution should work anyway, shouldn't it?

['n ddrylliog]

Better : it will. No, it is. Check your SVN. ^^

You can look at the org.xith3d.physics.PhysicRotation example.

Enjoy !