// XXX: Consider revising foreign lookup support
/// <inherits />
public ChunkRef GetChunkRef(int lcx, int lcz)
{
if (!LocalBoundsCheck(lcx, lcz))
{
IRegion alt = GetForeignRegion(lcx, lcz);
return((alt == null) ? null : alt.GetChunkRef(ForeignX(lcx), ForeignZ(lcz)));
}
int cx = lcx + _rx * XDIM;
int cz = lcz + _rz * ZDIM;
ChunkKey k = new ChunkKey(cx, cz);
ChunkRef c = _cache.Fetch(k);
if (c != null)
{
return(c);
}
c = ChunkRef.Create(this, lcx, lcz);
if (c != null)
{
_cache.Insert(c);
}
return(c);
}
/// <summary>
/// Copies a chunk from one location to another.
/// </summary>
/// <param name="src_cx">The global X-coordinate of the source chunk.</param>
/// <param name="src_cz">The global Z-coordinate of the source chunk.</param>
/// <param name="dst_cx">The global X-coordinate of the destination chunk.</param>
/// <param name="dst_cz">The global Z-coordinate of the destination chunk.</param>
/// <returns>A <see cref="ChunkRef"/> for the destination chunk.</returns>
public ChunkRef CopyChunk(int src_cx, int src_cz, int dst_cx, int dst_cz)
{
IRegion src_r = GetRegion(src_cx, src_cz);
if (src_r == null)
{
return(null);
}
IRegion dst_r = GetRegion(dst_cx, dst_cz);
if (dst_r == null)
{
int rx = dst_cx >> REGION_XLOG;
int rz = dst_cz >> REGION_ZLOG;
dst_r = _regionMan.CreateRegion(rx, rz);
}
IChunk c = src_r.GetChunk(src_cx & REGION_XMASK, src_cz & REGION_ZMASK);
c.SetLocation(dst_cx, dst_cz);
dst_r.SaveChunk(c);
return(dst_r.GetChunkRef(dst_cx & REGION_XMASK, dst_cz & REGION_ZMASK));
}
public virtual bool MoveNext()
{
if (_region == null)
{
return(false);
}
if (_enum == null)
{
return(MoveNextInRegion());
}
else
{
while (true)
{
if (_x >= RegionChunkManager.REGION_XLEN)
{
if (!_enum.MoveNext())
{
return(false);
}
_x = 0;
_z = -1;
_region = _enum.Current;
}
if (MoveNextInRegion())
{
_chunk = _region.GetChunkRef(_x, _z);
return(true);
}
}
}
}
/// <inheritdoc/>
public ChunkRef GetChunkRef(int cx, int cz)
{
IRegion r = GetRegion(cx, cz);
if (r == null)
{
return(null);
}
return(r.GetChunkRef(cx & REGION_XMASK, cz & REGION_ZMASK));
}
/// <inheritdoc/>
public ChunkRef SetChunk(int cx, int cz, IChunk chunk)
{
IRegion r = GetRegion(cx, cz);
if (r == null)
{
int rx = cx >> REGION_XLOG;
int rz = cz >> REGION_ZLOG;
r = _regionMan.CreateRegion(rx, rz);
}
chunk.SetLocation(cx, cz);
r.SaveChunk(chunk);
return(r.GetChunkRef(cx & REGION_XMASK, cz & REGION_ZMASK));
}