internal void FlushBuffer()
{
if (!m_IsCompressed || m_BufferAll || m_Buffer.Position <= 0)
{
return;
}
int outLen = (int)(m_Buffer.Position * 1.1);
if (m_CompBuff == null || m_CompBuff.Length < outLen)
{
m_CompBuff = new byte[outLen];
}
else
{
outLen = m_CompBuff.Length;
}
ZLibError error = ZLib.compress2(m_CompBuff, ref outLen, m_Buffer.ToArray(), (int)m_Buffer.Position, ZLibCompressionLevel.Z_BEST_COMPRESSION);
if (error != ZLibError.Z_OK)
{
throw new Exception("ZLib error during copression: " + error.ToString());
}
Raw.Write((int)outLen);
Raw.Write((int)m_Buffer.Position);
Raw.Write(m_CompBuff, 0, outLen);
m_Buffer.Position = 0;
}
public override int Read(byte[] buffer, int offset, int count)
{
if (m_Compressed)
{
long pos = m_Uncomp.Position;
m_Uncomp.Seek(0, SeekOrigin.End);
while (pos + count > m_Uncomp.Length && RawStream.Position + 8 < RawStream.Length)
{
int block = Raw.ReadInt32();
int ucLen = Raw.ReadInt32();
if (block > 0x10000000 || block <= 0 || ucLen > 0x10000000 || ucLen <= 0)
{
break;
}
if (RawStream.Position + block > RawStream.Length)
{
break;
}
if (m_ReadBuff == null || m_ReadBuff.Length < block)
{
m_ReadBuff = new byte[block];
}
if (m_CompBuff == null || m_CompBuff.Length < ucLen)
{
m_CompBuff = new byte[ucLen];
}
else
{
ucLen = m_CompBuff.Length;
}
Raw.Read(m_ReadBuff, 0, block);
ZLibError error = ZLib.uncompress(m_CompBuff, ref ucLen, m_ReadBuff, block);
if (error != ZLibError.Z_OK)
{
throw new Exception("ZLib error uncompressing: " + error.ToString());
}
m_Uncomp.Write(m_CompBuff, 0, ucLen);
}
m_Uncomp.Position = pos;
return(m_Uncomp.Read(buffer, offset, count));
}
else
{
return(RawStream.Read(buffer, offset, count));
}
}
public override long Seek(long offset, SeekOrigin origin)
{
if (m_Compressed)
{
long absPos = offset;
if (origin == SeekOrigin.Current)
{
absPos += m_Uncomp.Position;
}
if (absPos < 0)
{
throw new Exception("Cannot seek past the begining of the stream.");
}
long pos = m_Uncomp.Position;
m_Uncomp.Seek(0, SeekOrigin.End);
while ((origin == SeekOrigin.End || absPos >= m_Uncomp.Length) && RawStream.Position < RawStream.Length)
{
int block = Raw.ReadInt32();
int ucLen = Raw.ReadInt32();
if (m_ReadBuff == null || m_ReadBuff.Length < block)
{
m_ReadBuff = new byte[block];
}
if (m_CompBuff == null || m_CompBuff.Length < ucLen)
{
m_CompBuff = new byte[ucLen];
}
else
{
ucLen = m_CompBuff.Length;
}
Raw.Read(m_ReadBuff, 0, block);
ZLibError error = ZLib.uncompress(m_CompBuff, ref ucLen, m_ReadBuff, block);
if (error != ZLibError.Z_OK)
{
throw new Exception("ZLib error uncompressing: " + error.ToString());
}
m_Uncomp.Write(m_CompBuff, 0, ucLen);
}
m_Uncomp.Position = pos;
return(m_Uncomp.Seek(offset, origin));
}
else
{
return(RawStream.Seek(offset, origin));
}
}
public PacketReader GetCompressedReader()
{
int fullLen = ReadInt32();
int destLen = 0;
byte[] buff;
if (fullLen >= 4)
{
int packLen = ReadInt32();
destLen = packLen;
if (destLen < 0)
{
destLen = 0;
}
buff = new byte[destLen];
if (fullLen > 4 && destLen > 0)
{
if (ZLib.uncompress(buff, ref destLen, CopyBytes(this.Position, fullLen - 4), fullLen - 4) !=
ZLibError.Z_OK)
{
destLen = 0;
buff = new byte[1];
}
}
else
{
destLen = 0;
buff = new byte[1];
}
}
else
{
buff = new byte[1];
}
return(new PacketReader(buff, false));
}
public DesignStateDetailed(Serial serial, int revision, int xMin, int yMin, int xMax, int yMax, MultiTileEntry[] tiles) : base(0xD8)
{
EnsureCapacity(17 + (tiles.Length * 5));
Write((byte)0x03); // Compression Type
Write((byte)0x00); // Unknown
Write((uint)serial);
Write((int)revision);
Write((short)tiles.Length);
Write((short)0); // Buffer length : reserved
Write((byte)0); // Plane count : reserved
int totalLength = 1; // includes plane count
int width = (xMax - xMin) + 1;
int height = (yMax - yMin) + 1;
if (m_PlaneBuffers == null)
{
m_PlaneBuffers = new byte[9][];
m_PlaneUsed = new bool[9];
for (int i = 0; i < m_PlaneBuffers.Length; ++i)
{
m_PlaneBuffers[i] = new byte[0x400];
}
m_StairBuffers = new byte[6][];
for (int i = 0; i < m_StairBuffers.Length; ++i)
{
m_StairBuffers[i] = new byte[MaxItemsPerStairBuffer * 5];
}
}
else
{
for (int i = 0; i < m_PlaneUsed.Length; ++i)
{
m_PlaneUsed[i] = false;
}
Clear(m_PlaneBuffers[0], width * height * 2);
for (int i = 0; i < 4; ++i)
{
Clear(m_PlaneBuffers[1 + i], (width - 1) * (height - 2) * 2);
Clear(m_PlaneBuffers[5 + i], width * (height - 1) * 2);
}
}
int totalStairsUsed = 0;
for (int i = 0; i < tiles.Length; ++i)
{
MultiTileEntry mte = tiles[i];
int x = mte.m_OffsetX - xMin;
int y = mte.m_OffsetY - yMin;
int z = mte.m_OffsetZ;
int plane, size;
bool floor = false;
try
{
floor = (Ultima.TileData.ItemTable[mte.m_ItemID & 0x3FFF].Height <= 0);
}
catch
{
}
switch (z)
{
case 0: plane = 0; break;
case 7: plane = 1; break;
case 27: plane = 2; break;
case 47: plane = 3; break;
case 67: plane = 4; break;
default:
{
int stairBufferIndex = (totalStairsUsed / MaxItemsPerStairBuffer);
byte[] stairBuffer = m_StairBuffers[stairBufferIndex];
int byteIndex = (totalStairsUsed % MaxItemsPerStairBuffer) * 5;
stairBuffer[byteIndex++] = (byte)((mte.m_ItemID >> 8) & 0x3F);
stairBuffer[byteIndex++] = (byte)mte.m_ItemID;
stairBuffer[byteIndex++] = (byte)mte.m_OffsetX;
stairBuffer[byteIndex++] = (byte)mte.m_OffsetY;
stairBuffer[byteIndex++] = (byte)mte.m_OffsetZ;
++totalStairsUsed;
continue;
}
}
if (plane == 0)
{
size = height;
}
else if (floor)
{
size = height - 2;
x -= 1;
y -= 1;
}
else
{
size = height - 1;
plane += 4;
}
int index = ((x * size) + y) * 2;
m_PlaneUsed[plane] = true;
m_PlaneBuffers[plane][index] = (byte)((mte.m_ItemID >> 8) & 0x3F);
m_PlaneBuffers[plane][index + 1] = (byte)mte.m_ItemID;
}
int planeCount = 0;
for (int i = 0; i < m_PlaneBuffers.Length; ++i)
{
if (!m_PlaneUsed[i])
{
continue;
}
++planeCount;
int size = 0;
if (i == 0)
{
size = width * height * 2;
}
else if (i < 5)
{
size = (width - 1) * (height - 2) * 2;
}
else
{
size = width * (height - 1) * 2;
}
byte[] inflatedBuffer = m_PlaneBuffers[i];
int deflatedLength = m_DeflatedBuffer.Length;
ZLibError ce = ZLib.compress2(m_DeflatedBuffer, ref deflatedLength, inflatedBuffer, size, ZLibCompressionLevel.Z_DEFAULT_COMPRESSION);
if (ce != ZLibError.Z_OK)
{
Console.WriteLine("ZLib error: {0} (#{1})", ce, (int)ce);
deflatedLength = 0;
size = 0;
}
Write((byte)(0x20 | i));
Write((byte)size);
Write((byte)deflatedLength);
Write((byte)(((size >> 4) & 0xF0) | ((deflatedLength >> 8) & 0xF)));
Write(m_DeflatedBuffer, 0, deflatedLength);
totalLength += 4 + deflatedLength;
}
int totalStairBuffersUsed = (totalStairsUsed + (MaxItemsPerStairBuffer - 1)) / MaxItemsPerStairBuffer;
for (int i = 0; i < totalStairBuffersUsed; ++i)
{
++planeCount;
int count = (totalStairsUsed - (i * MaxItemsPerStairBuffer));
if (count > MaxItemsPerStairBuffer)
{
count = MaxItemsPerStairBuffer;
}
int size = count * 5;
byte[] inflatedBuffer = m_StairBuffers[i];
int deflatedLength = m_DeflatedBuffer.Length;
ZLibError ce = ZLib.compress2(m_DeflatedBuffer, ref deflatedLength, inflatedBuffer, size, ZLibCompressionLevel.Z_DEFAULT_COMPRESSION);
if (ce != ZLibError.Z_OK)
{
Console.WriteLine("ZLib error: {0} (#{1})", ce, (int)ce);
deflatedLength = 0;
size = 0;
}
Write((byte)(9 + i));
Write((byte)size);
Write((byte)deflatedLength);
Write((byte)(((size >> 4) & 0xF0) | ((deflatedLength >> 8) & 0xF)));
Write(m_DeflatedBuffer, 0, deflatedLength);
totalLength += 4 + deflatedLength;
}
Seek(15, System.IO.SeekOrigin.Begin);
Write((short)totalLength); // Buffer length
Write((byte)planeCount); // Plane count
/*int planes = (tiles.Length + (MaxItemsPerPlane - 1)) / MaxItemsPerPlane;
*
* if ( planes > 255 )
* planes = 255;
*
* int totalLength = 0;
*
* Write( (byte) planes );
++totalLength;
*
* int itemIndex = 0;
*
* for ( int i = 0; i < planes; ++i )
* {
* int byteIndex = 0;
*
* for ( int j = 0; j < MaxItemsPerPlane && itemIndex < tiles.Length; ++j, ++itemIndex )
* {
* MultiTileEntry e = tiles[itemIndex];
*
* m_InflatedBuffer[byteIndex++] = (byte)((e.m_ItemID >> 8) & 0x3F);
* m_InflatedBuffer[byteIndex++] = (byte)e.m_ItemID;
* m_InflatedBuffer[byteIndex++] = (byte)e.m_OffsetX;
* m_InflatedBuffer[byteIndex++] = (byte)e.m_OffsetY;
* m_InflatedBuffer[byteIndex++] = (byte)e.m_OffsetZ;
* }
*
* int deflatedLength = m_DeflatedBuffer.Length;
* ZLibError ce = ZLib.compress2( m_DeflatedBuffer, ref deflatedLength, m_InflatedBuffer, byteIndex, ZLibCompressionLevel.Z_DEFAULT_COMPRESSION );
*
* if ( ce != ZLibError.Z_OK )
* {
* Console.WriteLine( "ZLib error: {0} (#{1})", ce, (int)ce );
* deflatedLength = 0;
* byteIndex = 0;
* }
*
* Write( (byte) 0x00 );
* Write( (byte) byteIndex );
* Write( (byte) deflatedLength );
* Write( (byte) (((byteIndex >> 4) & 0xF0) | ((deflatedLength >> 8) & 0xF)) );
* Write( m_DeflatedBuffer, 0, deflatedLength );
*
* totalLength += 4 + deflatedLength;
* }
*
* Seek( 15, System.IO.SeekOrigin.Begin );
* Write( (short) totalLength ); // Buffer length*/
}
