/// <summary>
/// Saves an existing <see cref="IChunk"/> to the region at the given local coordinates.
/// </summary>
/// <param name="lcx">The local X-coordinate of a chunk relative to this region.</param>
/// <param name="lcz">The local Z-coordinate of a chunk relative to this region.</param>
/// <param name="chunk">A <see cref="IChunk"/> to save to the given location.</param>
/// <returns>A <see cref="ChunkRef"/> represneting the <see cref="IChunk"/> at its new location.</returns>
/// <remarks>If the local coordinates are out of bounds for this region, the action will be forwarded to the correct region
/// transparently. The <see cref="IChunk"/>'s internal global coordinates will be updated to reflect the new location.</remarks>
public ChunkRef SetChunk(int lcx, int lcz, IChunk chunk)
{
if (!LocalBoundsCheck(lcx, lcz))
{
IRegion alt = GetForeignRegion(lcx, lcz);
return((alt == null) ? null : alt.CreateChunk(ForeignX(lcx), ForeignZ(lcz)));
}
DeleteChunk(lcx, lcz);
int cx = lcx + _rx * XDIM;
int cz = lcz + _rz * ZDIM;
chunk.SetLocation(cx, cz);
using (Stream chunkOutStream = GetChunkOutStream(lcx, lcz))
{
chunk.Save(chunkOutStream);
}
ChunkRef cr = ChunkRef.Create(this, lcx, lcz);
_cache.Insert(cr);
return(cr);
}
/// <inheritdoc/>
public ChunkRef CreateChunk(int cx, int cz)
{
IRegion r = GetRegion(cx, cz);
if (r == null)
{
int rx = cx >> REGION_XLOG;
int rz = cz >> REGION_ZLOG;
r = _regionMan.CreateRegion(rx, rz);
}
return(r.CreateChunk(cx & REGION_XMASK, cz & REGION_ZMASK));
}
/// <inherits />
public ChunkRef CreateChunk(int lcx, int lcz)
{
if (!LocalBoundsCheck(lcx, lcz))
{
IRegion alt = GetForeignRegion(lcx, lcz);
return((alt == null) ? null : alt.CreateChunk(ForeignX(lcx), ForeignZ(lcz)));
}
DeleteChunk(lcx, lcz);
int cx = lcx + _rx * XDIM;
int cz = lcz + _rz * ZDIM;
IChunk c = CreateChunkCore(cx, cz);
c.Save(GetChunkOutStream(lcx, lcz));
ChunkRef cr = ChunkRef.Create(this, lcx, lcz);
_cache.Insert(cr);
return(cr);
}