52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#pragma once
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#include <cstdio>
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#include <cstdint>
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namespace Feather::Network
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{
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// Class to read packet data, such as is produced by NetworkMessage
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class PacketReader
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{
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public:
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PacketReader(const uint8_t *const dataPtr)
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: m_data(dataPtr), m_length(ReadVarInt())
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{
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}
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inline uint8_t ReadByte()
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{
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return m_data[m_offset++];
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}
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inline int ReadVarInt()
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{
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int numRead = 0;
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int result = 0;
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uint8_t read;
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do
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{
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read = ReadByte();
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int value = (read & 0b01111111);
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result |= (value << (7 * numRead));
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numRead++;
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if (numRead > 5)
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{
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// complain
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//throw new RuntimeException("VarInt is too big");
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}
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} while ((read & 0b10000000) != 0);
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return result;
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}
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inline uint32_t Length() const { return m_length; }
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private:
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const uint8_t *const m_data;
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const uint32_t m_length;
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uint32_t m_offset = 0;
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};
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} |