// Preconditions: asteroid and collider are not null
// Postconditions: Returns whether the asteroid collided with the ship.
/// <summary>
/// Returns whether the object collided with a transform
/// </summary>
/// <param name="tester">test object to collide</param>
/// <param name="collider">desired object to check collision</param>
/// <returns>true if the asteroid collides with the desired object, false if otherwise</returns>
public bool ProcessCollision(Transform tester, Transform collider)
{
if (tester == null || collider == null)
{
return(false);
}
Vector3 delta = tester.transform.position - collider.position;
SceneNode cur = collider.GetComponent <SceneNode>();
foreach (Transform child in collider) // Traverse the collider tree
{
SceneNode cn = child.GetComponent <SceneNode>();
//Debug.Log("Traversing: " + collider.gameObject.name);
if (cn != null)
{
foreach (NodePrimitive geom in cn.PrimitiveList) // check if the node contains meshes
{
AllMesh mesh = geom.GetComponent <AllMesh>();
bool isContactMesh = false;
if (mesh != null) // check collision with each vertex in the mesh
{
for (int i = 0; i < mesh.GetVertexLocations().Count; i++)
{
isContactMesh = ProcessCollision(tester, mesh.GetVertexLocations()[i]);
//Debug.Log(string.Format("Going through vertex {0}", i));
if (isContactMesh)
{
if (htree.IsLeaf(cur) && tester.GetComponent <Asteroid>() != null)
{
//htree.Delete(ref cur);
health -= 10 * Time.deltaTime;
}
return(true);
}
}
}
}
return(ProcessCollision(tester, cn.transform)); // traverse the child transform
}
}
// Hit radius of the object
float hitRadius = Mathf.Sqrt(Mathf.Pow(collider.lossyScale.x, 2f) +
Mathf.Pow(collider.lossyScale.y, 2f) + Mathf.Pow(collider.lossyScale.z, 2f));
if (hitRadius < 1)
{
hitRadius = 1;
}
if (delta.magnitude < tester.localScale.z && delta.magnitude < hitRadius) // condition of hit detection
{
if (cur != null)
{
if (htree.IsLeaf(cur) && tester.GetComponent <Asteroid>() != null)
{
health -= 10 * Time.deltaTime;
}
}
return(true);
}
return(false);
}