public CollisionEventUpdate Copy()
{
CollisionEventUpdate c = new CollisionEventUpdate();
lock (m_objCollisionList)
{
foreach (KeyValuePair <uint, ContactPoint> kvp in m_objCollisionList)
{
c.m_objCollisionList.Add(kvp.Key, kvp.Value);
}
}
return(c);
}
// Send the collected collisions into the simulator.
// Called at taint time from within the Step() function thus no locking problems
// with CollisionCollection and ObjectsWithNoMoreCollisions.
// Return 'true' if there were some actual collisions passed up
public override bool SendCollisions()
{
bool ret = true;
// If the 'no collision' call, force it to happen right now so quick collision_end
bool force = (CollisionCollection.Count == 0 && CollisionsLastTick.Count != 0);
// throttle the collisions to the number of milliseconds specified in the subscription
if (force || (PhysicsScene.SimulationNowTime >= NextCollisionOkTime))
{
NextCollisionOkTime = PhysicsScene.SimulationNowTime + SubscribedEventsMs;
// We are called if we previously had collisions. If there are no collisions
// this time, send up one last empty event so Universe can sense collision end.
if (CollisionCollection.Count == 0)
{
// If I have no collisions this time, remove me from the list of objects with collisions.
ret = false;
}
DetailLog("{0},{1}.SendCollisionUpdate,call,numCollisions={2}", LocalID, TypeName,
CollisionCollection.Count);
base.SendCollisionUpdate(CollisionCollection);
// Remember the collisions from this tick for some collision specific processing.
CollisionsLastTick = CollisionCollection;
// The CollisionCollection instance is passed around in the simulator.
// Make sure we don't have a handle to that one and that a new one is used for next time.
// This fixes an interesting 'gotcha'. If we call CollisionCollection.Clear() here,
// a race condition is created for the other users of this instance.
CollisionCollection = new CollisionEventUpdate();
}
return ret;
}
protected BSPhysObject(BSScene parentScene, uint localID, string name, string typeName)
{
PhysicsScene = parentScene;
LocalID = localID;
PhysObjectName = name;
Name = name; // PhysicsActor also has the name of the object. Someday consolidate.
TypeName = typeName;
// Oddity if object is destroyed and recreated very quickly it could still have the old body.
if (!PhysBody.HasPhysicalBody)
PhysBody = new BulletBody(localID);
// The collection of things that push me around
PhysicalActors = new BSActorCollection(PhysicsScene);
// Initialize variables kept in base.
GravityMultiplier = 1.0f;
Gravity = new OMV.Vector3(0f, 0f, BSParam.Gravity);
PrimAssetState = PrimAssetCondition.Unknown;
// Default material type. Also sets Friction, Restitution and Density.
SetMaterial((int)MaterialAttributes.Material.Wood);
CollisionCollection = new CollisionEventUpdate();
CollisionsLastTick = CollisionCollection;
SubscribedEventsMs = 0;
CollidingStep = 0;
TrueCollidingStep = 0;
CollisionAccumulation = 0;
ColliderIsMoving = false;
CollisionScore = 0;
// All axis free.
LockedLinearAxis = LockedAxisFree;
LockedAngularAxis = LockedAxisFree;
}
public CollisionEventUpdate Copy()
{
CollisionEventUpdate c = new CollisionEventUpdate();
lock (m_objCollisionList)
{
foreach (KeyValuePair<uint, ContactPoint> kvp in m_objCollisionList)
c.m_objCollisionList.Add(kvp.Key, kvp.Value);
}
return c;
}
public override void AddCollisionEvent(uint CollidedWith, ContactPoint contact)
{
if (base.SubscribedToCollisions() && SubscribedEvents())
//If we don't have anything that we are going to trigger, don't even add
{
if (CollisionEventsThisFrame == null)
CollisionEventsThisFrame = new CollisionEventUpdate();
CollisionEventsThisFrame.AddCollider(CollidedWith, contact);
}
}
public override bool SendCollisions()
{
if (CollisionEventsThisFrame == null || m_frozen) //No collisions or frozen, don't mess with it
return false;
base.SendCollisionUpdate(CollisionEventsThisFrame.Copy());
CollisionEventsThisFrame = CollisionEventsThisFrame.Count == 0 ? null : new CollisionEventUpdate();
return true;
}
