public static bool ClosestPointOnSurface(Collider collider, Vector3 to, float radius, out Vector3 closestPointOnSurface)
{
if (collider is BoxCollider)
{
closestPointOnSurface = SuperCollider.ClosestPointOnSurface((BoxCollider)collider, to);
return(true);
}
else if (collider is SphereCollider)
{
closestPointOnSurface = SuperCollider.ClosestPointOnSurface((SphereCollider)collider, to);
return(true);
}
else if (collider is CapsuleCollider)
{
closestPointOnSurface = SuperCollider.ClosestPointOnSurface((CapsuleCollider)collider, to);
return(true);
}
else if (collider is MeshCollider)
{
BSPTree bsp = collider.GetComponent <BSPTree>();
if (bsp != null)
{
closestPointOnSurface = bsp.ClosestPointOn(to, radius);
return(true);
}
BruteForceMesh bfm = collider.GetComponent <BruteForceMesh>();
if (bfm != null)
{
closestPointOnSurface = bfm.ClosestPointOn(to);
return(true);
}
}
else if (collider is TerrainCollider)
{
closestPointOnSurface = SuperCollider.ClosestPointOnSurface((TerrainCollider)collider, to, radius, false);
return(true);
}
Debug.LogError(string.Format("{0} does not have an implementation for ClosestPointOnSurface; GameObject.Name='{1}'", collider.GetType(), collider.gameObject.name));
closestPointOnSurface = Vector3.zero;
return(false);
}
/// <summary>
/// Check if any of the CollisionSpheres are colliding with any walkable objects in the world.
/// If they are, apply a proper pushback and retrieve the collision data
/// </summary>
void RecursivePushback(int depth, int maxDepth)
{
PushIgnoredColliders();
bool contact = false;
foreach (var sphere in spheres)
{
foreach (Collider col in Physics.OverlapSphere((SpherePosition(sphere)), radius, Walkable, triggerInteraction))
{
Vector3 position = SpherePosition(sphere);
Vector3 contactPoint;
bool contactPointSuccess = SuperCollider.ClosestPointOnSurface(col, position, radius, out contactPoint);
if (!contactPointSuccess)
{
return;
}
if (debugPushbackMesssages)
{
DebugDraw.DrawMarker(contactPoint, 2.0f, Color.cyan, 0.0f, false);
}
Vector3 v = contactPoint - position;
if (v != Vector3.zero)
{
// Cache the collider's layer so that we can cast against it
int layer = col.gameObject.layer;
col.gameObject.layer = TemporaryLayerIndex;
// Check which side of the normal we are on
bool facingNormal = Physics.SphereCast(new Ray(position, v.normalized), TinyTolerance, v.magnitude + TinyTolerance, 1 << TemporaryLayerIndex);
col.gameObject.layer = layer;
// Orient and scale our vector based on which side of the normal we are situated
if (facingNormal)
{
if (Vector3.Distance(position, contactPoint) < radius)
{
v = v.normalized * (radius - v.magnitude) * -1;
}
else
{
// A previously resolved collision has had a side effect that moved us outside this collider
continue;
}
}
else
{
v = v.normalized * (radius + v.magnitude);
}
contact = true;
transform.position += v;
col.gameObject.layer = TemporaryLayerIndex;
// Retrieve the surface normal of the collided point
RaycastHit normalHit;
Physics.SphereCast(new Ray(position + v, contactPoint - (position + v)), TinyTolerance, out normalHit, 1 << TemporaryLayerIndex);
col.gameObject.layer = layer;
SuperCollisionType superColType = col.gameObject.GetComponent <SuperCollisionType>();
if (superColType == null)
{
superColType = defaultCollisionType;
}
// Our collision affected the collider; add it to the collision data
var collision = new SuperCollision()
{
collisionSphere = sphere,
superCollisionType = superColType,
gameObject = col.gameObject,
point = contactPoint,
normal = normalHit.normal
};
collisionData.Add(collision);
}
}
}
PopIgnoredColliders();
if (depth < maxDepth && contact)
{
RecursivePushback(depth + 1, maxDepth);
}
}