public void Move(GameBaseObject currentParent, RelationshipType relationshipType, GameBaseObject newParent)
{
// if a relationship exists between this and the soon-to-be old parent
if (currentParent.HasDirectRelationshipWith(this, relationshipType, RelationshipDirection.ParentToChild))
{
//remove that relationship
currentParent.RemoveRelationship(relationshipType, RelationshipDirection.ParentToChild, this);
//add a new one
newParent.AddRelationship(relationshipType, RelationshipDirection.ParentToChild, this);
}
}
public bool HasDirectRelationshipWith(GameBaseObject baseObject, RelationshipType type, RelationshipDirection direction)
{
if (Relationships == null)
{
return(false);
}
var objectRelationship = new GameObjectRelationship(type, direction, baseObject);
// Identifies object equality by ID.
// Returns whether the object's Relationships contains a relationship with the other object in the specified direction.
return(Relationships.Any(gameObjectRelationship => gameObjectRelationship.RelationshipTo.ID == objectRelationship.RelationshipTo.ID));
}
public bool HasIndirectRelationshipWith(GameBaseObject baseObject, RelationshipType type, RelationshipDirection direction)
{
if (Relationships == null)
{
return(false);
}
if (HasDirectRelationshipWith(baseObject, type, direction))
{
return(false);
}
// check child objects for direct relationship
// check each child's child's child's ...
// ...
return(false);
}
public void RemoveRelationship(RelationshipType relationshipType, RelationshipDirection relationshipDirection, GameBaseObject relationshipTo)
{
// if null instanciate Relationships
if (Relationships == null)
{
Relationships = new List <GameObjectRelationship>();
}
// if relationshipTo's Relationships is null instanciate Relationships
if (relationshipTo.Relationships == null)
{
relationshipTo.Relationships = new List <GameObjectRelationship>();
}
// remove new relationship
Relationships.Remove(new GameObjectRelationship(relationshipType, relationshipDirection, relationshipTo));
// remove other type of relationship
if (relationshipDirection == RelationshipDirection.ParentToChild)
{
relationshipTo.Relationships.Remove(new GameObjectRelationship(relationshipType, RelationshipDirection.ChildToParent, this));
}
else if (relationshipDirection == RelationshipDirection.ChildToParent)
{
relationshipTo.Relationships.Remove(new GameObjectRelationship(relationshipType, RelationshipDirection.ParentToChild, this));
}
}
public GameObjectRelationship(RelationshipType relationshipType, RelationshipDirection relationshipDirection, GameBaseObject relationshipTo)
{
RelationshipType = relationshipType;
RelationshipDirection = relationshipDirection;
RelationshipTo = relationshipTo;
}