/// <summary>
/// Calculates the material number of the a street.
/// </summary>
/// <param name="_street">Street to check neighbours.</param>
/// <returns></returns>
private int CalculateBinaryMaterialNumber(Street _street)
{
int IsLeftSideStreet = 0;
int IsRightSideStreet = 0;
int IsTopSideStreet = 0;
int IsDownSideStreet = 0;
// is left neighbour a street
int leftPosX = _street.GetPosX / 2 - 1;
if (!(leftPosX < 0))
{
if (Streets.Grid[leftPosX, _street.GetPosY / 2] != null)
{
IsLeftSideStreet = 1;
}
}
else
{
IsLeftSideStreet = 1;
}
// is right neighbour a street
int rightPosX = _street.GetPosX / 2 + 1;
if (!(rightPosX >= Streets.GetWidth))
{
if (Streets.Grid[rightPosX, _street.GetPosY / 2] != null)
{
IsRightSideStreet = 1;
}
}
else
{
IsRightSideStreet = 1;
}
// is top neighbour a street
int topPosY = _street.GetPosY / 2 + 1;
if (!(topPosY >= Streets.GetHeight))
{
if (Streets.Grid[_street.GetPosX / 2, topPosY] != null)
{
IsTopSideStreet = 1;
}
}
else
{
IsTopSideStreet = 1;
}
// is down neighbour a street
int downPosY = _street.GetPosY / 2 - 1;
if (!(downPosY < 0))
{
if (Streets.Grid[_street.GetPosX / 2, downPosY] != null)
{
IsDownSideStreet = 1;
}
}
else
{
IsDownSideStreet = 1;
}
// binary code of the material
return(1 * IsLeftSideStreet + 2 * IsTopSideStreet + 4 * IsRightSideStreet + 8 * IsDownSideStreet);
}
// -------------------------------------------------------------------------------------------------------------
#region Functions
/// <summary>
/// Adds a street to the list.
/// </summary>
/// <param name="_street">Hands over a street to add.</param>
private void StreetCreated(Street _street)
{
Streets.Grid[(_street.GetPosX / 2), (_street.GetPosY / 2)] = _street;
}