public static ControllerState ReadFromPacket(byte[] packet)
{
ControllerStateBuilder state = null;
if (packet.Length == 13)
{
return(Classic.ReadFromPacket(packet));
}
if (packet.Length == BUTTONS_CD32.Length)
{
state = new ControllerStateBuilder();
for (int i = 0; i < BUTTONS_CD32.Length; ++i)
{
if (string.IsNullOrEmpty(BUTTONS_CD32[i]))
{
continue;
}
state.SetButton(BUTTONS_CD32[i], (packet[i] & 0b10000000) == 0x00);
}
state.SetButton("up", (packet[8] & 0b00000001) == 0);
state.SetButton("down", (packet[0] & 0b00000100) == 0);
state.SetButton("left", (packet[0] & 0b00001000) == 0);
state.SetButton("right", (packet[0] & 0b00010000) == 0);
}
else if (packet.Length == BUTTONS_CDTV_REMOTE.Length)
{
int checksum = (packet[33] >> 4) | packet[34];
int checkedCheckSum = 0;
for (int i = 0; i < 33; ++i)
{
checkedCheckSum += packet[i] == 0 ? 0 : 1;
}
if (checksum == checkedCheckSum)
{
state = new ControllerStateBuilder();
for (int i = 0; i < BUTTONS_CDTV_REMOTE.Length; ++i)
{
if (string.IsNullOrEmpty(BUTTONS_CDTV_REMOTE[i]))
{
continue;
}
state.SetButton(BUTTONS_CDTV_REMOTE[i], packet[i] != 0x00);
}
float x = 0;
float y = 0;
if (packet[0] != 0x00)
{
x = -0.25f;
}
else if (packet[2] != 0x00)
{
x = 0.25f;
}
if (packet[1] != 0x00)
{
y = 0.25f;
}
else if (packet[3] != 0x00)
{
y = -0.25f;
}
SignalTool.SetMouseProperties(x, y, state, .25f);
}
}
else if (packet.Length == BUTTONS_CDTV_JOYSTICK.Length && packet[0] == 0)
{
int checksum = (packet[24] >> 4) | packet[25];
int checkedCheckSum = 0;
for (int i = 0; i < 24; ++i)
{
checkedCheckSum += packet[i] == 0 ? 0 : 1;
}
if (checksum == checkedCheckSum)
{
state = new ControllerStateBuilder();
for (int i = 0; i < BUTTONS_CDTV_JOYSTICK.Length; ++i)
{
if (string.IsNullOrEmpty(BUTTONS_CDTV_JOYSTICK[i]))
{
continue;
}
state.SetButton(BUTTONS_CDTV_JOYSTICK[i], packet[i] != 0x00);
}
SignalTool.FakeAnalogStick(packet[6], packet[5], packet[4], packet[3], state, "x", "y");
SignalTool.FakeAnalogStick(packet[12], packet[11], packet[10], packet[9], state, "Joy2x", "Joy2y");
}
}
else if (packet.Length == 26 && packet[0] == 1)
{
int checksum = (packet[24] >> 4) | packet[25];
int checkedCheckSum = 0;
for (int i = 0; i < 24; ++i)
{
checkedCheckSum += packet[i] == 0 ? 0 : 1;
}
if (checksum == checkedCheckSum)
{
state = new ControllerStateBuilder();
state.SetButton("left_button", packet[2] == 0x00);
state.SetButton("right_button", packet[1] == 0x00);
sbyte xVal = (sbyte)SignalTool.ReadByte(packet, 3);
sbyte yVal = (sbyte)SignalTool.ReadByte(packet, 11);
SignalTool.SetMouseProperties(xVal / -128.0f, yVal / 128.0f, state);
}
}
else if (packet.Length == 19)
{
state = new ControllerStateBuilder();
state.SetButton("left_button", packet[0] != 0x00);
state.SetButton("right_button", packet[2] != 0x00);
sbyte xVal = (sbyte)SignalTool.ReadByteBackwards(packet, 3);
sbyte yVal = (sbyte)SignalTool.ReadByteBackwards(packet, 11);
SignalTool.SetMouseProperties(xVal / -128.0f, yVal / 128.0f, state);
}
else if (packet.Length == 36)
{
byte[] reconstructedPacket = new byte[18];
int j = 0;
for (int i = 0; i < 18; ++i)
{
reconstructedPacket[i] = (byte)((packet[j] >> 4) | packet[j + 1]);
j += 2;
}
byte[] polishedPacket = new byte[128];
int checksum = 0;
for (int i = 0; i < 16; ++i)
{
checksum += reconstructedPacket[i];
for (int k = 0; k < 8; ++k)
{
polishedPacket[(i * 8) + k] = (byte)((reconstructedPacket[i] & (1 << k)) != 0 ? 1 : 0);
}
}
short sentChecksum = (short)((reconstructedPacket[17] << 8) | reconstructedPacket[16]);
if (checksum == sentChecksum)
{
state = new ControllerStateBuilder();
for (int i = 0; i < 128; ++i)
{
string scanCode = i.ToString("X").ToUpper();;
state.SetButton(scanCode, polishedPacket[i] != 0x00);
}
}
}
return(state?.Build());
}