dolphin/Source/Plugins/Plugin_WiimoteNew/Src/WiimoteEmu/Attachment/Nunchuk.cpp

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#include "Nunchuk.h"
namespace WiimoteEmu
{
static const u8 nunchuck_id[] = { 0x00, 0x00, 0xa4, 0x20, 0x00, 0x00 };
/* Default calibration for the nunchuck. It should be written to 0x20 - 0x3f of the
extension register. 0x80 is the neutral x and y accelerators and 0xb3 is the
neutral z accelerometer that is adjusted for gravity. */
static const u8 nunchuck_calibration[] =
{
0x80, 0x80, 0x80, 0x00, // accelerometer x, y, z neutral
0xb3, 0xb3, 0xb3, 0x00, // x, y, z g-force values
// 0x80 = analog stick x and y axis center
0xff, 0x00, 0x80,
0xff, 0x00, 0x80,
0xec, 0x41 // checksum on the last two bytes
};
// nunchuk buttons
#define NUNCHUK_C 0x02
#define NUNCHUK_Z 0x01
const u8 nunchuk_button_bitmasks[] =
{
NUNCHUK_C,
NUNCHUK_Z,
};
Nunchuk::Nunchuk() : Attachment( "Nunchuk" )
{
// buttons
groups.push_back( m_buttons = new Buttons( "Buttons" ) );
m_buttons->controls.push_back( new ControlGroup::Input( "C" ) );
m_buttons->controls.push_back( new ControlGroup::Input( "Z" ) );
// stick
groups.push_back( m_stick = new AnalogStick( "Stick" ) );
// tilt
groups.push_back( m_tilt = new Tilt( "Tilt" ) );
// swing
//groups.push_back( m_swing = new Force( "Swing" ) );
// shake
groups.push_back( m_shake = new Buttons( "Shake" ) );
m_shake->controls.push_back( new ControlGroup::Input( "X" ) );
m_shake->controls.push_back( new ControlGroup::Input( "Y" ) );
m_shake->controls.push_back( new ControlGroup::Input( "Z" ) );
// set up register
// calibration
memcpy( &reg[0x20], nunchuck_calibration, sizeof(nunchuck_calibration) );
// id
memcpy( &reg[0xfa], nunchuck_id, sizeof(nunchuck_id) );
// this should get set to 0 on disconnect, but it isn't, o well
memset(m_shake_step, 0, sizeof(m_shake_step));
}
void Nunchuk::GetState( u8* const data, const bool focus )
{
wm_extension* const ncdata = (wm_extension*)data;
// stick / not using calibration data for stick, o well
m_stick->GetState( &ncdata->jx, &ncdata->jy, 0x80, focus ? 127 : 0 );
// tilt
EmulateTilt((wm_accel*)&ncdata->ax, m_tilt, (accel_cal*)&reg[0x20], focus);
if (focus)
{
// shake
EmulateShake(&ncdata->ax, m_shake, m_shake_step);
// buttons
m_buttons->GetState( &ncdata->bt, nunchuk_button_bitmasks );
}
// flip the button bits :/
ncdata->bt ^= 0x03;
}
}