/// <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));
}
/// <inheritdoc/>
public IChunk GetChunk(int cx, int cz)
{
IRegion r = GetRegion(cx, cz);
if (r == null)
{
return(null);
}
return(r.GetChunk(cx & REGION_XMASK, cz & REGION_ZMASK));
}
/// <summary>
/// Returns a <see cref="IChunk"/> given local coordinates relative to this region.
/// </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>
/// <returns>A <see cref="IChunk"/> object for the given coordinates, or null if the chunk does not exist.</returns>
/// <remarks>If the local coordinates are out of bounds for this region, the action will be forwarded to the correct region
/// transparently. The returned <see cref="IChunk"/> object may either come from cache, or be regenerated from disk.</remarks>
public IChunk GetChunk(int lcx, int lcz)
{
if (!LocalBoundsCheck(lcx, lcz))
{
IRegion alt = GetForeignRegion(lcx, lcz);
return((alt == null) ? null : alt.GetChunk(ForeignX(lcx), ForeignZ(lcz)));
}
if (!ChunkExists(lcx, lcz))
{
return(null);
}
return(CreateChunkVerifiedCore(GetChunkTree(lcx, lcz)));
}
