i tried the tests of the new xith3d release, but i found that the collision
demo doesn’t work as expected. The spheres drop/tunnel through the objects and also drop/tunnel through the bottom of the box. Must i
increase the temporal resolution of the collision system?
another problem appears when terminating a xith3d application. Closing the window always crashes my JVM and produces a hs_err_*.log file. Is there anything known about this?
Thanks!
I have the same problem, and I am going to make an own collision system.
It’s working with triangle-level detection and kinetic energy (with % elasticity and masses).
So far it works perfect.
Maybe I set it open source so everyone could contribute with code.
Sounds great!
Do you know some good literature that deals with the concepts
of collision detection/avoidance in game programming?
Can we get a Xith3D developer (David?) to comment on this please?
Personally I’d like to see the simplest possible example of collision detection in Xith, without anything else.
I want to control the movement of objects myself (without the forces being part of the collision system) and then just check if a collision has occured every iteration. Is this possible?
Also, how does the Bounds and intersects stuff fit with this?
Thanks.
The collision package is currently not maintained. As far as I know no one is working on it. Please have a look at the odejava project.
I also suggest checking out Odejava. It is possible to use the collision detection part of Odejava and not the physics (create Geoms with no Bodies).
Will.
I’m currently taking a physics course and I think I have enough knowledge of basic newtonian mechanics to create a collision system, all I need are some pointers on how to start something like this using Xith3D. Could one just use the bounds objects available in Xith3D and use their intercect method? Or does a whole new structure need to be made for this? I’d love to work on it since I need it for my game as well, and I would much prefer a Xith solution instead of using another library like Odejava that would take up unneccesary resources. As soon as I’m done with porting this 3DS loader to Xith I’m gonna take a look at the collider package and see if I can contribute anything to it.
Also, where is David? I emailed him a while ago and haven’t received a response from him. Is he still working on Xith?
In our collision system are we using m/s and joule (newton metre/second) and elasticity (%) masses (kg) and you can move your objects without adding forces.
Currently I’m optimizing the code but if someone just want a collision detection I can send you the code (like I said it’s based on triangle detection and could be very slow sometimes).
Alonzo
[quote]In our collision system are we using m/s and joule (newton metre/second) and elasticity (%) masses (kg) and you can move your objects without adding forces.
Currently I’m optimizing the code but if someone just want a collision detection I can send you the code (like I said it’s based on triangle detection and could be very slow sometimes).
Alonzo
[/quote]
Check your PMs.
Hi folks,
All I want is the simple detection of two objects intersecting (or the bounding areas of two objects intersecting)… “has object A touched object B?”
I see there is code for Bounds and methods like “intersects” but there’s not much documentation on how to use them.
I assume that the discussion of physics and forces etc. is really about (intelligent) collision avoidance, not just simple detection.
Can anyone comment on the simple part and maybe supply a code snippet, please? Thanks.