76 lines
2.2 KiB
C#
76 lines
2.2 KiB
C#
using System.Runtime.CompilerServices;
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namespace kcp2k
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{
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public static partial class Utils
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{
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// Clamp so we don't have to depend on UnityEngine
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public static int Clamp(int value, int min, int max)
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{
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if (value < min) return min;
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if (value > max) return max;
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return value;
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}
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// encode 8 bits unsigned int
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public static int Encode8u(byte[] p, int offset, byte c)
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{
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p[0 + offset] = c;
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return 1;
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}
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// decode 8 bits unsigned int
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public static int Decode8u(byte[] p, int offset, ref byte c)
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{
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c = p[0 + offset];
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return 1;
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}
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// encode 16 bits unsigned int (lsb)
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public static int Encode16U(byte[] p, int offset, ushort w)
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{
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p[0 + offset] = (byte)(w >> 0);
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p[1 + offset] = (byte)(w >> 8);
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return 2;
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}
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// decode 16 bits unsigned int (lsb)
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public static int Decode16U(byte[] p, int offset, ref ushort c)
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{
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ushort result = 0;
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result |= p[0 + offset];
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result |= (ushort)(p[1 + offset] << 8);
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c = result;
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return 2;
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}
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// encode 32 bits unsigned int (lsb)
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public static int Encode32U(byte[] p, int offset, uint l)
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{
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p[0 + offset] = (byte)(l >> 0);
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p[1 + offset] = (byte)(l >> 8);
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p[2 + offset] = (byte)(l >> 16);
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p[3 + offset] = (byte)(l >> 24);
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return 4;
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}
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// decode 32 bits unsigned int (lsb)
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public static int Decode32U(byte[] p, int offset, ref uint c)
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{
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uint result = 0;
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result |= p[0 + offset];
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result |= (uint)(p[1 + offset] << 8);
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result |= (uint)(p[2 + offset] << 16);
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result |= (uint)(p[3 + offset] << 24);
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c = result;
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return 4;
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}
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// timediff was a macro in original Kcp. let's inline it if possible.
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int TimeDiff(uint later, uint earlier)
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{
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return (int)(later - earlier);
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}
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}
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}
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