private void BuildWalls()
{
var circumference = FindCircumference(Patches.Where(p => p.WithinCity)).Vertices;
var allowedTowerPositions = circumference.ToList();
var castleVertices = Castle.Patch.Shape.Vertices.ToList();
foreach (var position in allowedTowerPositions.Intersect(WaterBorder).ToList())
{
var neighbours = Patches.Where(p => p.Shape.Vertices.Contains(position));
if (!neighbours.Any(n => !n.WithinCity && !n.Water))
{
allowedTowerPositions.Remove(position);
}
}
// Make sure the wall starts and ends at the sea
if (Options.Water)
{
var seaPoints = allowedTowerPositions.Where(t => Patches.Any(p => p.Water && p.Shape.Vertices.Contains(t))).ToList();
var lastSeaPoint = seaPoints[1];
var firstSeaPoint = seaPoints[0];
var minIndex = Math.Min(allowedTowerPositions.IndexOf(lastSeaPoint), allowedTowerPositions.IndexOf(firstSeaPoint));
var maxIndex = Math.Max(allowedTowerPositions.IndexOf(lastSeaPoint), allowedTowerPositions.IndexOf(firstSeaPoint));
if (minIndex != 0 && maxIndex != allowedTowerPositions.Count - 1)
{
var seaPointIndex = allowedTowerPositions.IndexOf(lastSeaPoint);
while (seaPointIndex > 0)
{
var point = allowedTowerPositions[0];
allowedTowerPositions.RemoveAt(0);
allowedTowerPositions.Add(point);
seaPointIndex = allowedTowerPositions.IndexOf(lastSeaPoint);
}
}
}
CityWall = new Wall(allowedTowerPositions, this, 2, 10, castleVertices);
var allowedCastleWallPositions = castleVertices.Except(allowedTowerPositions).ToList();
var firstIndex = castleVertices.IndexOf(allowedCastleWallPositions.First()) - 1;
if (firstIndex < 0)
{
firstIndex = castleVertices.Count - 1;
}
var lastIndex = castleVertices.IndexOf(allowedCastleWallPositions.Last()) + 1;
if (lastIndex > castleVertices.Count - 1)
{
lastIndex = 0;
}
allowedCastleWallPositions.Insert(0, castleVertices[firstIndex]);
allowedCastleWallPositions.Add(castleVertices[lastIndex]);
Castle.Wall = new Wall(allowedCastleWallPositions, this, 1, 1, circumference);
}
