public void Merge(TilePool pool, TileImportPolicy policy)
{
Dictionary <string, Tile> existingHashes = new Dictionary <string, Tile>();
Dictionary <string, Tile> newHashes = new Dictionary <string, Tile>();
using (SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider()) {
foreach (Tile tile in _tiles)
{
TextureResource tileTex = Tiles.GetTileTexture(tile.Uid);
string hash = Convert.ToBase64String(sha1.ComputeHash(tileTex.RawData));
existingHashes[hash] = tile;
}
foreach (Tile tile in pool.Tiles)
{
TextureResource tileTex = pool.Tiles.GetTileTexture(tile.Uid);
string hash = Convert.ToBase64String(sha1.ComputeHash(tileTex.RawData));
if (policy == TileImportPolicy.SourceUnique && newHashes.ContainsKey(hash))
{
continue;
}
else if (policy == TileImportPolicy.SetUnique && existingHashes.ContainsKey(hash))
{
continue;
}
Tile newTile = _tiles.Add(tileTex);
existingHashes[hash] = newTile;
newHashes[hash] = newTile;
}
}
}
public TileImportOptions()
{
ImportPolicty = TileImportPolicy.SetUnique;
}
