/// <summary>
/// Handle any bookkeeping needed when the entities involved in this SolverUpdateable change.
/// </summary>
protected internal virtual void OnInvolvedEntitiesChanged()
{
//First verify that something really changed.
bool entitiesChanged = false;
RawList <Entity> newInvolvedEntities = PhysicsResources.GetEntityRawList();
CollectInvolvedEntities(newInvolvedEntities);
if (newInvolvedEntities.Count == involvedEntities.Count)
{
for (int i = 0; i < newInvolvedEntities.Count; i++)
{
if (newInvolvedEntities.Elements[i] != involvedEntities.Elements[i])
{
entitiesChanged = true;
break;
}
}
}
else
{
entitiesChanged = true;
}
if (entitiesChanged)
{
//Probably need to wake things up given that such a significant change was made.
for (int i = 0; i < involvedEntities.Count; i++)
{
Entity e = involvedEntities.Elements[i];
if (e.isDynamic)
{
e.activityInformation.Activate();
break;//Don't bother activating other entities; they are all a part of the same simulation island.
}
}
//CollectInvolvedEntities will give the updateable a new simulationIslandConnection and get rid of the old one.
CollectInvolvedEntities();
if (SolverGroup != null)
{
SolverGroup.OnInvolvedEntitiesChanged();
}
//We woke up the FORMER involved entities, now wake up the current involved entities.
for (int i = 0; i < involvedEntities.Count; i++)
{
Entity e = involvedEntities.Elements[i];
if (e.isDynamic)
{
e.activityInformation.Activate();
break; //Don't bother activating other entities; they are all a part of the same simulation island.
}
}
}
PhysicsResources.GiveBack(newInvolvedEntities);
}
