dolphin/Source/Core/InputCommon/ControllerEmu/ControlGroup/Tilt.cpp

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// Copyright 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "InputCommon/ControllerEmu/ControlGroup/Tilt.h"
#include <algorithm>
#include <cmath>
#include <memory>
#include <string>
#include "Common/Common.h"
#include "InputCommon/ControlReference/ControlReference.h"
#include "InputCommon/ControllerEmu/Control/Control.h"
#include "InputCommon/ControllerEmu/Control/Input.h"
#include "InputCommon/ControllerEmu/Setting/NumericSetting.h"
namespace ControllerEmu
{
Tilt::Tilt(const std::string& name_) : ControlGroup(name_, GroupType::Tilt)
{
controls.emplace_back(std::make_unique<Input>(Translate, _trans("Forward")));
controls.emplace_back(std::make_unique<Input>(Translate, _trans("Backward")));
controls.emplace_back(std::make_unique<Input>(Translate, _trans("Left")));
controls.emplace_back(std::make_unique<Input>(Translate, _trans("Right")));
controls.emplace_back(std::make_unique<Input>(Translate, _trans("Modifier")));
numeric_settings.emplace_back(std::make_unique<NumericSetting>(_trans("Dead Zone"), 0, 0, 50));
numeric_settings.emplace_back(std::make_unique<NumericSetting>(_trans("Circle Stick"), 0));
numeric_settings.emplace_back(std::make_unique<NumericSetting>(_trans("Angle"), 0.9, 0, 180));
}
void Tilt::GetState(ControlState* const x, ControlState* const y, const bool step)
{
// this is all a mess
ControlState yy = controls[0]->control_ref->State() - controls[1]->control_ref->State();
ControlState xx = controls[3]->control_ref->State() - controls[2]->control_ref->State();
ControlState deadzone = numeric_settings[0]->GetValue();
ControlState circle = numeric_settings[1]->GetValue();
auto const angle = numeric_settings[2]->GetValue() / 1.8;
ControlState m = controls[4]->control_ref->State();
// deadzone / circle stick code
// this section might be all wrong, but its working good enough, I think
ControlState ang = atan2(yy, xx);
ControlState ang_sin = sin(ang);
ControlState ang_cos = cos(ang);
// the amt a full square stick would have at current angle
ControlState square_full =
std::min(ang_sin ? 1 / fabs(ang_sin) : 2, ang_cos ? 1 / fabs(ang_cos) : 2);
// the amt a full stick would have that was (user setting circular) at current angle
// I think this is more like a pointed circle rather than a rounded square like it should be
ControlState stick_full = (square_full * (1 - circle)) + (circle);
ControlState dist = sqrt(xx * xx + yy * yy);
// dead zone code
dist = std::max(0.0, dist - deadzone * stick_full);
dist /= (1 - deadzone);
// circle stick code
ControlState amt = dist / stick_full;
dist += (square_full - 1) * amt * circle;
if (m)
dist *= 0.5;
yy = std::max(-1.0, std::min(1.0, ang_sin * dist));
xx = std::max(-1.0, std::min(1.0, ang_cos * dist));
// this is kinda silly here
// gui being open will make this happen 2x as fast, o well
// silly
if (step)
{
if (xx > m_tilt[0])
m_tilt[0] = std::min(m_tilt[0] + 0.1, xx);
else if (xx < m_tilt[0])
m_tilt[0] = std::max(m_tilt[0] - 0.1, xx);
if (yy > m_tilt[1])
m_tilt[1] = std::min(m_tilt[1] + 0.1, yy);
else if (yy < m_tilt[1])
m_tilt[1] = std::max(m_tilt[1] - 0.1, yy);
}
*y = m_tilt[1] * angle;
*x = m_tilt[0] * angle;
}
} // namespace ControllerEmu