public Chunk(byte fill)
{
Initialize();
_position = Int3.Zero;
for (int xi = 0; xi < Control.CHUNK_SIZE; xi++)
for (int yi = 0; yi < Control.CHUNK_SIZE; yi++)
for (int zi = 0; zi < Control.CHUNK_SIZE; zi++)
_data[xi, yi, zi] = fill;
this[CF.isLoaded] = true;
if (fill != 0x00)
{
_numBlocks = Control.BLOCKS_IN_CHUNK;
}
}
/// <summary>
/// Converts from chunk-space to region-space
/// </summary>
/// <param name="chunk"></param>
/// <returns></returns>
public static Int3 ChunkToRegion(Int3 chunk)
{
return chunk % Control.REGION_SIZE;
}
/// <summary>
/// Converts from world-space to chunk-space
/// </summary>
/// <param name="world"></param>
/// <returns></returns>
public static Int3 WorldToChunk(Int3 world)
{
return world / Control.CHUNK_SIZE;
}
/// <summary>
/// Converts from world-space to block-space.
/// </summary>
/// <param name="world"></param>
/// <returns></returns>
public static Int3 WorldToBlock(Int3 world)
{
return world % Control.CHUNK_SIZE;
}
public static void Update(Vector3 inOrigin)
{
//TODO: Reorganize update function, include visibility call
bool CheckForUnload = false;
Int3 temp = (Int3)(inOrigin / Control.CHUNK_SIZE);
if (_origin != temp)
{
_origin = temp;
CheckForUnload = true;
}
for (int x = -VISIBILITY_RADIUS; x < VISIBILITY_RADIUS; x++)
{
int x2 = x * x;
for (int y = -VISIBILITY_RADIUS; y < VISIBILITY_RADIUS; y++)
{
int y2 = y * y;
for (int z = -VISIBILITY_RADIUS; z < VISIBILITY_RADIUS; z++)
{
if ((x2 + y2 + z * z) > VISIBILITY_RADIUS_SQUARED)
continue;
Chunk c = GetChunk(x + _origin.X, y + _origin.Y, z + _origin.Z);
if (c != null)
if (c[CF.Load])
_Load.Add(c);
}
}
}
foreach (Chunk c in _AllChunks)
{
if (!c[CF.isLoaded])
continue;
if (CheckForUnload)
{
if ((_origin - c.Position).Square() > UNLOAD_RADIUS_SQUARED)
{
_Unload.Add(c);
continue;
}
}
if (c[CF.Build])
_Rebuild.Add(c);
}
UpdateRebuild();
UpdateLoad();
UpdateUnload();
UpdateRender();
}
public static void SetBlock(Int3 block, byte data)
{
Chunk c = GetChunk(WorldToChunk(block));
if (c == null)
return;
c[WorldToBlock(block)] = data;
}
public static Chunk GetChunk(Int3 chunk)
{
//TODO: Optimize GetChunk
foreach (Chunk c in _AllChunks)
{
if (c.Position == chunk)
return c;
}
return null;
}
public static Block GetBlock(Int3 block)
{
Chunk c = GetChunk(WorldToChunk(block));
if (c == null)
return null;
if (!c[CF.isLoaded])
return null;
return (c[WorldToBlock(block)]);
}
/// <summary>
/// Converts from chunk-space to region-space
/// </summary>
/// <param name="chunk"></param>
/// <returns></returns>
public static Int3 ChunkToRegion(Int3 chunk)
{
return(chunk % Control.REGION_SIZE);
}
/// <summary>
/// Converts from world-space to chunk-space
/// </summary>
/// <param name="world"></param>
/// <returns></returns>
public static Int3 WorldToChunk(Int3 world)
{
return(world / Control.CHUNK_SIZE);
}
/// <summary>
/// Converts from world-space to block-space.
/// </summary>
/// <param name="world"></param>
/// <returns></returns>
public static Int3 WorldToBlock(Int3 world)
{
return(world % Control.CHUNK_SIZE);
}
private int WriteSubdiv(Int3 min, int size)
{
bool Subdivide = false;
byte cData = _chunk[min];
if (size > 1)
{
for (int x = min.X; x < min.X + size; x++)
{
for (int y = min.Y; y < min.Y + size; y++)
{
for (int z = min.Z; z < min.Z + size; z++)
{
if (cData != _chunk[x, y, z])
{
Subdivide = true;
break;
}
}
if (Subdivide)
break;
}
if (Subdivide)
break;
}
if (Subdivide)
{
long headerPosition = _filestream.Position;
byte header = (byte)CSF.None;
_filestream.Position += 1;
int nSize = size / 2;
Int3 mid = min + Int3.One * nSize;
int retValue;
#region LBF
retValue = WriteSubdiv(min, nSize);
if (retValue == -1)
return -1;
else if (retValue == 1)
header |= (byte)CSF.LBF;
#endregion
#region LBB
retValue = WriteSubdiv(new Int3(min.X, min.Y, mid.Z), nSize);
if (retValue == -1)
return -1;
else if (retValue == 1)
header |= (byte)CSF.LBB;
#endregion
#region LTF
retValue = WriteSubdiv(new Int3(min.X, mid.Y, min.Z), nSize);
if (retValue == -1)
return -1;
else if (retValue == 1)
header |= (byte)CSF.LTF;
#endregion
#region LTB
retValue = WriteSubdiv(new Int3(min.X, mid.Y, mid.Z), nSize);
if (retValue == -1)
return -1;
else if (retValue == 1)
header |= (byte)CSF.LTB;
#endregion
#region RBF
retValue = WriteSubdiv(new Int3(mid.X, min.Y, min.Z), nSize);
if (retValue == -1)
return -1;
else if (retValue == 1)
header |= (byte)CSF.RBF;
#endregion
#region RBB
retValue = WriteSubdiv(new Int3(mid.X, min.Y, mid.Z), nSize);
if (retValue == -1)
return -1;
else if (retValue == 1)
header |= (byte)CSF.RBB;
#endregion
#region RTF
retValue = WriteSubdiv(new Int3(mid.X, mid.Y, min.Z), nSize);
if (retValue == -1)
return -1;
else if (retValue == 1)
header |= (byte)CSF.RTF;
#endregion
#region RTB
retValue = WriteSubdiv(mid, nSize);
if (retValue == -1)
return -1;
else if (retValue == 1)
header |= (byte)CSF.RTB;
#endregion
long endPos = _filestream.Position;
_filestream.Position = headerPosition;
_filestream.WriteByte(header);
_filestream.Position = endPos;
}
else
{
_filestream.WriteByte(cData);
}
}
else
{
_filestream.WriteByte(cData);
}
//If the file is larger because of this encoding, return false.
if (_filestream.Position - _pos > Control.BLOCKS_IN_CHUNK)
return -1;
if (Subdivide)
return 1;
else
return 0;
}
private int WriteSubdiv(Int3 min, int size)
{
bool Subdivide = false;
byte cData = _chunk[min];
if (size > 1)
{
for (int x = min.X; x < min.X + size; x++)
{
for (int y = min.Y; y < min.Y + size; y++)
{
for (int z = min.Z; z < min.Z + size; z++)
{
if (cData != _chunk[x, y, z])
{
Subdivide = true;
break;
}
}
if (Subdivide)
{
break;
}
}
if (Subdivide)
{
break;
}
}
if (Subdivide)
{
long headerPosition = _filestream.Position;
byte header = (byte)CSF.None;
_filestream.Position += 1;
int nSize = size / 2;
Int3 mid = min + Int3.One * nSize;
int retValue;
#region LBF
retValue = WriteSubdiv(min, nSize);
if (retValue == -1)
{
return(-1);
}
else if (retValue == 1)
{
header |= (byte)CSF.LBF;
}
#endregion
#region LBB
retValue = WriteSubdiv(new Int3(min.X, min.Y, mid.Z), nSize);
if (retValue == -1)
{
return(-1);
}
else if (retValue == 1)
{
header |= (byte)CSF.LBB;
}
#endregion
#region LTF
retValue = WriteSubdiv(new Int3(min.X, mid.Y, min.Z), nSize);
if (retValue == -1)
{
return(-1);
}
else if (retValue == 1)
{
header |= (byte)CSF.LTF;
}
#endregion
#region LTB
retValue = WriteSubdiv(new Int3(min.X, mid.Y, mid.Z), nSize);
if (retValue == -1)
{
return(-1);
}
else if (retValue == 1)
{
header |= (byte)CSF.LTB;
}
#endregion
#region RBF
retValue = WriteSubdiv(new Int3(mid.X, min.Y, min.Z), nSize);
if (retValue == -1)
{
return(-1);
}
else if (retValue == 1)
{
header |= (byte)CSF.RBF;
}
#endregion
#region RBB
retValue = WriteSubdiv(new Int3(mid.X, min.Y, mid.Z), nSize);
if (retValue == -1)
{
return(-1);
}
else if (retValue == 1)
{
header |= (byte)CSF.RBB;
}
#endregion
#region RTF
retValue = WriteSubdiv(new Int3(mid.X, mid.Y, min.Z), nSize);
if (retValue == -1)
{
return(-1);
}
else if (retValue == 1)
{
header |= (byte)CSF.RTF;
}
#endregion
#region RTB
retValue = WriteSubdiv(mid, nSize);
if (retValue == -1)
{
return(-1);
}
else if (retValue == 1)
{
header |= (byte)CSF.RTB;
}
#endregion
long endPos = _filestream.Position;
_filestream.Position = headerPosition;
_filestream.WriteByte(header);
_filestream.Position = endPos;
}
else
{
_filestream.WriteByte(cData);
}
}
else
{
_filestream.WriteByte(cData);
}
//If the file is larger because of this encoding, return false.
if (_filestream.Position - _pos > Control.BLOCKS_IN_CHUNK)
{
return(-1);
}
if (Subdivide)
{
return(1);
}
else
{
return(0);
}
}
public Chunk(Int3 pos)
{
Initialize();
_position = pos;
translation = Matrix.CreateTranslation(Position * Control.CHUNK_SIZE);
}
public byte this[Int3 a]
{
get
{
return this[a.X, a.Y, a.Z];
}
set
{
this[a.X, a.Y, a.Z] = value;
}
}