//---------------------------------------------------------------------
/// <summary>
/// Gets a neighboring site.
/// </summary>
/// <param name="location">
/// The location of the neighboring site relative to the site.
/// </param>
/// <param name="neighbor">
/// The object which will be assigned the requested site. If this
/// parameter is null and the location is valid, then a new instance
/// will be created and assigned to the parameter.
/// </param>
/// <returns>
/// true if the location is on the landscape, and the information
/// about the requested site was assigned to the neighbor parameter.
/// false if the location is not valid (in which case, the neighbor
/// parameter is unchanged).
/// </returns>
public bool GetNeighbor(RelativeLocation location,
ref MutableSite neighbor)
{
Location?neighborLocation = ComputeNeighborLocation(this.Location, location);
if (neighborLocation.HasValue)
{
return(landscape.GetSite(neighborLocation.Value, ref neighbor));
}
return(false);
}
//---------------------------------------------------------------------
internal SiteEnumerator(ILandscape landscape)
{
this.landscape = landscape;
atEnd = (landscape.Count == 0);
moveNextNotCalled = true;
if (! atEnd) {
activeSiteEtor = landscape.ActiveSites.GetEnumerator() as ActiveSiteEnumerator;
if (landscape.InactiveSiteCount > 0) {
inactiveSite = new MutableSite(landscape,
landscape.FirstInactiveSite,
false, /* isActive? */
landscape.InactiveSiteDataIndex);
}
}
}
//---------------------------------------------------------------------
public bool GetSite(Location location,
ref MutableSite site)
{
if (IsValid(location))
{
uint index = activeSiteMap[location];
bool isActive = (index != ActiveSiteMap.InactiveSiteDataIndex);
if (site == null)
{
site = new MutableSite(this, location, isActive, index);
}
else
{
site.SetAll(this, location, isActive, index);
}
return(true);
}
return(false);
}
//---------------------------------------------------------------------
/// <summary>
/// Gets a neighboring site.
/// </summary>
/// <param name="location">
/// The location of the neighboring site relative to the site.
/// </param>
/// <param name="neighbor">
/// The object which will be assigned the requested site. If this
/// parameter is null and the location is valid, then a new instance
/// will be created and assigned to the parameter.
/// </param>
/// <returns>
/// true if the location is on the landscape, and the information
/// about the requested site was assigned to the neighbor parameter.
/// false if the location is not valid (in which case, the neighbor
/// parameter is unchanged).
/// </returns>
public bool GetNeighbor(RelativeLocation location,
ref MutableSite neighbor)
{
Location? neighborLocation = ComputeNeighborLocation(this.Location, location);
if (neighborLocation.HasValue)
return landscape.GetSite(neighborLocation.Value, ref neighbor);
return false;
}
