/// <summary>
/// Adds the specified node to the grid. A node will only be added
/// if there does not exist a node in the grid at the same position.
/// </summary>
/// <returns>True if the operation succeeded</returns>
public bool AddNode(Node node)
{
// Don't add the node if another one already exists
if (HasNodeAt(node.Position))
{
return(false);
}
// Add the node based on its position
_nodeMap.Add(node.Position, node);
Nodes.Add(node);
// Build fields
_fieldBuilder.BuildFields(node, _nodeMap);
return(true);
}