/// <summary>
/// 探测并解包数据,属于外部接口
/// </summary>
/// <param name="data"></param>
/// <param name="apLayer"></param>
/// <param name="npLayer"></param>
/// <param name="mapLayer"></param>
/// <returns></returns>
public static CmccUnpacketResult Unpacket(byte[] data, ref APLayer apLayer, ref NPLayer npLayer, ref MapLayer mapLayer)
{
if (data == null)
{
return CmccUnpacketResult.OtherError;
}
int begin = -1;
int end = -1;
for (int n = 0; n < data.Length; n++)
{
if (data[n] == CmccConst.ApFlag.A)
{
if (data[n + 1] == CmccConst.ApId.A)
{
apLayer.apId = CmccConst.ApId.A;
begin = n;
break;
}
else if (data[n + 1] == CmccConst.ApId.C)
{
apLayer.apId = CmccConst.ApId.C;
begin = n;
break;
}
}
if (data[n] == CmccConst.ApFlag.B)
{
apLayer.apId = CmccConst.ApId.B;
begin = n;
break;
}
}
if (begin < 0)
{
return CmccUnpacketResult.OtherError;
}
for (int n = begin + 1; n < data.Length; n++)
{
if (data[n] == data[begin])
{
end = n;
break;
}
}
if (end < 0)
{
return CmccUnpacketResult.OtherError;
}
byte[] apData = new byte[end - begin + 1];
for (int n = 0; n < apData.Length; n++)
{
apData[n] = data[n + begin];
}
switch (apLayer.apId)
{
case CmccConst.ApId.A:
return UnpacketAPA(apData, ref npLayer, ref mapLayer);
case CmccConst.ApId.B:
return UnpacketAPB(apData, ref npLayer, ref mapLayer);
case CmccConst.ApId.C:
return UnpacketAPC(apData, ref npLayer, ref mapLayer);
default:
return CmccUnpacketResult.OtherError;
}
}
/// <summary>
/// 提供给用户的打包接口
/// </summary>
/// <param name="apLayer"></param>
/// <param name="npLayer"></param>
/// <param name="mapLayer"></param>
/// <returns></returns>
public static byte[] Packet(APLayer apLayer, NPLayer npLayer, MapLayer mapLayer)
{
List<byte> apData = new List<byte>();
List<byte> npData = new List<byte>();
List<byte> mapData = new List<byte>();
// 打包MAP层数据包
mapData = PacketMapLayer(mapLayer);
switch (npLayer.npId)
{
case CmccConst.NpId.A:
npData = PacketNPLayer(npLayer, mapLayer.mapId, mapData);
break;
default:
npData = mapData;
break;
}
switch (apLayer.apId)
{
case CmccConst.ApId.A:
apData = PacketAPA(npLayer.npId, npData);
break;
case CmccConst.ApId.B:
apData = PacketAPB(npLayer.npId, npData);
break;
case CmccConst.ApId.C:
apData = PacketAPC(npLayer.npId, npData);
break;
default:
apData = npData;
break;
}
return apData.ToArray();
}
