/// <summary>
/// Calculates the proper hashcode for a chunk with x and z coordinates in a certain space.
/// </summary>
/// <param name="x">The X coordinate</param>
/// <param name="z">The Z coordinate</param>
/// <param name="space">Which space the coordinates are in</param>
/// <returns>A long value to serve as the hashcode for the specific coordinate pair </returns>
public static ulong GetChunkHashCode(int x, int z, CoordinateSpace space)
{
if (space == CoordinateSpace.Chunk)
{
x = ChunkCoordinates2D.ConvertSpace(x, CoordinateSpace.Chunk);
z = ChunkCoordinates2D.ConvertSpace(z, CoordinateSpace.Chunk);
}
return((ulong)x + ((ulong)z << 32));
}
public Chunk(int x, int z, CoordinateSpace space)
{
if (space == CoordinateSpace.World)
{
x >>= 4;
z >>= 4;
}
chunkSegments = new List <ChunkSegment>(height);
coordinates = new ChunkCoordinates2D(x, z, CoordinateSpace.Chunk);
chunks.Add(GetChunkHashCode(), this);
for (int y = 0; y < height; y++)
{
ChunkCoordinates3D coordinates = new ChunkCoordinates3D(x, y, z, CoordinateSpace.Chunk);
ChunkSegment segment = new ChunkSegment(this, coordinates);
chunkSegments.Add(segment);
}
}
/// <summary>
/// If the chunk exists, returns a reference to the chunk at the provided cooridnates and null otherwise.
/// </summary>
/// <param name="x">The X coordinate for the chunk.</param>
/// <param name="z">The Z coordinate for the chunk.</param>
/// <param name="space">The space in which the X and Z coordinates are.</param>
/// <returns>The existing chunk at the specific coordinates.</returns>
public static Chunk GetChunk(int x, int z, CoordinateSpace space)
{
if (space == CoordinateSpace.Chunk)
{
x = ChunkCoordinates2D.ConvertSpace(x, CoordinateSpace.Chunk);
z = ChunkCoordinates2D.ConvertSpace(z, CoordinateSpace.Chunk);
}
Chunk chunk;
chunks.TryGetValue((ulong)x + ((ulong)z << 32), out chunk);
if (chunk == null)
{
chunk = new Chunk(x, z, CoordinateSpace.World);
}
return(chunk);
}