koobas.hobune.stream
Unity3 CollisionDetection.Continuous for Bullets causing ricochet
I noticed some new rigidbody flags for collision detection methods in unity 3 so I am playing around with it now but was curious if anyone has tried to make a bullet with the new collision routines.
I added a rendertrailer to my bullet sphere and notice that the bullets are ricocheting around the static level mesh as opposed to calling 'OnCollisionEnter' when it ricochets... I guess we still have to do a raycast on a per frame basis?
The docs don't really give many details about the implementation of each flag: ContinuousDynamic, Dynamic, and Discrete.
So it is still better to mark a bullet as Discrete and raycast old -> new position each frame?
Yup, I had the same problem: http://answers.unity3d.com/questions/20105/why-is-oncollisionenter-not-always-called. Using triggers ins$$anonymous$$d did not solve my problem.
I basically ditched the new unity 3.0 features and kept with the old methedologies of raycasting old position -> new position and checking the info that gets passed back.
Your walls also have to be set to ContinuousCollisionDetection. Dynamic CCD is for moving objects and CCD is for any objects that they can collide with.
I just started with unity, and don't fully understand the question, but are you trying to stop the bullet or handle a bullet collision ?
I wanted to stop projectiles into a wall, so I added a box collider to my wall, then looked for projectile collisions using tags:
function OnCollisionEnter(collision : Collision) {
if(collision.gameObject.tag == "projectile")
{
print("projectile hit at: " + collision.relativeVelocity.magnitude);
Destroy(collision.rigidbody);
}
for (var contact : ContactPoint in collision.contacts) {
Debug.DrawRay(contact.point, contact.normal, Color.white);
print(contact.point);
}
}
HTH
