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author | Tiger Wang <ziwei.tiger@hotmail.co.uk> | 2014-09-27 19:40:00 +0200 |
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committer | Tiger Wang <ziwei.tiger@hotmail.co.uk> | 2014-09-27 19:40:00 +0200 |
commit | d1814d2d67cdaa4fbcbd10a1af290412c29441af (patch) | |
tree | eb132621bef87b82311f70ead69694c4c88690c9 /src/ByteBuffer.cpp | |
parent | e.t.c. -> etc. (diff) | |
parent | Merge pull request #1461 from mc-server/RedstoneFix (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/ByteBuffer.cpp | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/src/ByteBuffer.cpp b/src/ByteBuffer.cpp index 96556bf61..70fdc008c 100644 --- a/src/ByteBuffer.cpp +++ b/src/ByteBuffer.cpp @@ -267,7 +267,7 @@ size_t cByteBuffer::GetReadableSpace(void) const } // Single readable space partition: ASSERT(m_WritePos >= m_ReadPos); - return m_WritePos - m_ReadPos ; + return m_WritePos - m_ReadPos; } @@ -489,6 +489,30 @@ bool cByteBuffer::ReadLEInt(int & a_Value) +bool cByteBuffer::ReadPosition(int & a_BlockX, int & a_BlockY, int & a_BlockZ) +{ + Int64 Value; + if (!ReadBEInt64(Value)) + { + return false; + } + + // Convert the 64 received bits into 3 coords: + UInt32 BlockXRaw = (Value >> 38) & 0x03ffffff; // Top 26 bits + UInt32 BlockYRaw = (Value >> 26) & 0x0fff; // Middle 12 bits + UInt32 BlockZRaw = (Value & 0x03ffffff); // Bottom 26 bits + + // If the highest bit in the number's range is set, convert the number into negative: + a_BlockX = ((BlockXRaw & 0x02000000) == 0) ? BlockXRaw : -(0x04000000 - (int)BlockXRaw); + a_BlockY = ((BlockYRaw & 0x0800) == 0) ? BlockYRaw : -(0x0800 - (int)BlockYRaw); + a_BlockZ = ((BlockZRaw & 0x02000000) == 0) ? BlockZRaw : -(0x04000000 - (int)BlockZRaw); + return true; +} + + + + + bool cByteBuffer::WriteChar(char a_Value) { CHECK_THREAD; @@ -526,6 +550,19 @@ bool cByteBuffer::WriteBEShort(short a_Value) +bool cByteBuffer::WriteBEUShort(unsigned short a_Value) +{ + CHECK_THREAD; + CheckValid(); + PUTBYTES(2); + u_short Converted = htons((u_short)a_Value); + return WriteBuf(&Converted, 2); +} + + + + + bool cByteBuffer::WriteBEInt(int a_Value) { CHECK_THREAD; @@ -661,6 +698,15 @@ bool cByteBuffer::WriteLEInt(int a_Value) +bool cByteBuffer::WritePosition(int a_BlockX, int a_BlockY, int a_BlockZ) +{ + return WriteBEInt64(((Int64)a_BlockX & 0x3FFFFFF) << 38 | ((Int64)a_BlockY & 0xFFF) << 26 | ((Int64)a_BlockZ & 0x3FFFFFF)); +} + + + + + bool cByteBuffer::ReadBuf(void * a_Buffer, size_t a_Count) { CHECK_THREAD; |