public static SpawnZone Instantiate(Region region, TileFlag filter, SpawnZoneValidator validator, bool cache)
{
var name = region.Name;
if (region.IsDefault || String.IsNullOrWhiteSpace(name))
{
name = "Default";
}
var filters = GetFilters(filter);
var hash = GetHashCode(region.Map, name, filters, validator);
SpawnZone o;
if (!_Cache.TryGetValue(hash, out o) || o == null)
{
o = new SpawnZone(region.Map, name, filters, validator);
if (cache)
{
_Cache[hash] = o;
}
o.Invalidate();
}
return(o);
}
private SpawnZone(Map facet, string region, TileFlag[] filters, SpawnZoneValidator validator)
{
_ImageLock = new object();
_ImageBGLock = new object();
_ImageFGLock = new object();
_Points = new Dictionary <int, Point3D>();
Facet = facet;
Region = region;
Filters = filters;
Validator = validator;
}
private static int GetHashCode(Map facet, string region, IEnumerable <TileFlag> filters, SpawnZoneValidator validator)
{
unchecked
{
var hash = region.Length;
hash = region.Aggregate(hash, (v, c) => (v * 397) ^ Convert.ToInt32(c));
hash = (hash * 397) ^ facet.MapID;
hash = (hash * 397) ^ facet.MapIndex;
var filter = TileFlag.None;
foreach (var f in filters)
{
filter |= f;
}
if (filter != TileFlag.None)
{
hash = (hash * 397) ^ (int)(((long)filter >> 0) & 0x7FFFFFFF);
hash = (hash * 397) ^ (int)(((long)filter >> 32) & 0x7FFFFFFF);
}
if (validator != null)
{
hash = (hash * 397) ^ validator.GetHashCode();
}
return(hash);
}
}
