private void ProcessLvlFiles(IEnumerable <string> files, Dictionary <string, MyBitmap> newMap, Dictionary <string, MyBitmap> oldMap)
{
// Create the mapping.
var mapping = new Dictionary <string, string>();
foreach (var tileOld in oldMap)
{
var tileNew = newMap.FirstOrDefault(t => t.Value.Equals(tileOld.Value));
mapping.Add(tileOld.Key, tileNew.Key); // tileNew.Key will be null if not found
}
foreach (var file in files)
{
var level = Level.Read(file);
for (var x = 0; x < level.Tiles.Length; x++)
{
for (var y = 0; y < level.Tiles[x].Length; y++)
{
var id = TileIds.ParsePaletteId(level.Tiles[x][y]);
var newId = mapping[id.Item2];
if (newId == null)
{
throw new Exception($"Removed tile in level {file}");
}
level.Tiles[x][y] = TileIds.PaletteTileId(id.Item1, newId);
}
}
level.Write(file);
}
}