/// <summary>
/// Convert a given WorldSpace co-ordinate to an in-chunk coordinate (an ItemSpace coordinate)
/// </summary>
/// <param name="coordinate"></param>
/// <returns></returns>
private ItemSpace WorldSpaceToItem(WorldSpace coordinate)
{
var blockX = Math.Abs(coordinate.X) % _chunkHeight;
var blockY = Math.Abs(coordinate.Y) % _chunkWidth;
var blockZ = Math.Abs(coordinate.Z) % _chunkDepth;
return(new ItemSpace((byte)blockX, (byte)blockY, (byte)blockZ));
}
public void UnloadArea(WorldSpace begin, WorldSpace end)
{
var sequence = base.ChunksWithin(begin, end, createIfNull: false)
.Select(chunk => TranslateWorldToChunk(chunk.Item1));
foreach (var chunk in sequence)
{
UnloadChunk(chunk);
}
}
public void UnloadAreaOutside(WorldSpace begin, WorldSpace end)
{
var localChunks = base.ChunksWithin(begin, end, createIfNull: false)
.Select(tuple => TranslateWorldToChunk(tuple.Item1))
.ToList();
var worldChunks = All(chunk => !localChunks.Contains(chunk.Item1)).ToList();
foreach (var chunk in worldChunks)
{
UnloadChunk(chunk.Key);
}
}
public T this[WorldSpace coordinate]
{
get
{
// Translate from world-space to item-space
var chunkSpace = WorldSpaceToItem(coordinate);
var blockX = chunkSpace.X;
var blockY = chunkSpace.Y;
var blockZ = chunkSpace.Z;
// Flat array, so walk the stride length for the Y component.
return(_blocks[blockX + (blockY + blockZ * _chunkWidth) * _chunkHeight]);
}
set
{
var chunkSpace = WorldSpaceToItem(coordinate);
var blockX = chunkSpace.X;
var blockY = chunkSpace.Y;
var blockZ = chunkSpace.Z;
_blocks[blockX + (blockY + blockZ * _chunkWidth) * _chunkHeight] = value;
}
}
public IEnumerable <IEntityLocationData> GetEntitiesAt(WorldSpace coordinates)
{
return(_items.Where(item => item.ToWorldSpace() == coordinates));
}
public new T this[WorldSpace coordinate]
{
get { return(base[coordinate]); }
set { base[coordinate] = value; }
}
/// <summary>
/// Return a list of chunk sized enumerations from the specified area.
/// </summary>
/// <param name="createIfNull">If true, give the user a chance to create chunks</param>
/// <param name="begin">Starting position</param>
/// <param name="end">Ending position</param>
/// <returns>A list of chunk sized enumerations from a specified area as (x,y,z,IEnumerable{T}) in chunk-space coordinates</returns>
public new IEnumerable <Tuple <ChunkSpace, IEnumerable <T> > > ChunksWithin(WorldSpace begin, WorldSpace end, bool createIfNull)
{
return(base.ChunksWithin(begin, end, createIfNull)
.Select(s => Tuple.Create(TranslateWorldToChunk(s.Item1), s.Item2.AsEnumerable())));
}
protected virtual T this[WorldSpace coordinates]
{
get { return(Get(coordinates)); }
set { Put(coordinates, value); }
}