/// <summary>
/// Creates a new <see cref="GameLevel"/> instance from an enumeration of vertices loaded
/// from a saved game file.
/// </summary>
/// <param name="savedVertices">An enumeration of vertices loaded from the saved game file.
/// </param>
/// <returns>The created game level instance.</returns>
/// <remarks>
/// <para>The loaded vertices' positions are preserved during the game level's
/// initialization.</para>
/// </remarks>
public static GameLevel Create(IEnumerable<Saves.Vertex> savedVertices)
{
var vertexMappings = new Dictionary<int, Vertex>();
var lineSegments = new List<LineSegment>();
foreach (Saves.Vertex savedVertex in savedVertices)
{
var vertex = new Vertex();
vertex.SetPosition(new Point(savedVertex.X, savedVertex.Y));
vertexMappings[savedVertex.Id] = vertex;
foreach (int connectedVertexId in savedVertex.ConnectedVertexIds)
{
if (!vertexMappings.ContainsKey(connectedVertexId))
{
// The connected vertex has not been mapped to a vertex view model yet;
// skip this line segment for now, it will be added when the other vertex
// is enumerated
continue;
}
Vertex otherVertex = vertexMappings[connectedVertexId];
LineSegment lineSegment = vertex.ConnectToVertex(otherVertex);
lineSegments.Add(lineSegment);
}
}
return new GameLevel(vertexMappings.Values, lineSegments, false);
}
