[ODE] When rockets hit objects
hplus-ode at mindcontrol.org
Tue Feb 22 09:33:33 MST 2005
> 1) the rockets are very fast (may lose some
Use a ray from source to destination for each frame.
> 2) there are lots of rockets (say, 20 at one time!)
> 3) how to detect when a rocket hit some object?
You'll get the dCollide callback, and test there, just
like any other collision.
> 4) how to identify this object?
The user data field of the body or geom the object is
> 5) the rockets may use boxes or spheres to detect
> collisions; which one is faster (may be a matter of I
> make some tests)?
Spheres are slightly faster. I recommend ccylinders for
rockets, as rockets are oblong. Plus the ray sticking out
the nose (or trailing behind the tail).
> It's possible to use only OPCODE to collision
> detection, in this case, or I must use a custom one?
Use the basic ODE system, it has all the primitives you
Carworld has source for rockets and grenades, although it
steps the physics fast enough (100 times a second) and
runs the rockets slow enough that a ray isn't needed.
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