forked from dolphin-emu/dolphin
d05f490caa
Makes it less error-prone to get state data from analog sticks (no need to pass any locals), and also allows direct assignment, letting the retrieved data be const.
72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
// Copyright 2017 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "InputCommon/ControllerEmu/ControlGroup/AnalogStick.h"
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#include <algorithm>
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#include <cmath>
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#include <memory>
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#include "Common/Common.h"
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#include "InputCommon/ControlReference/ControlReference.h"
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#include "InputCommon/ControllerEmu/Control/Control.h"
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#include "InputCommon/ControllerEmu/Control/Input.h"
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#include "InputCommon/ControllerEmu/ControllerEmu.h"
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#include "InputCommon/ControllerEmu/Setting/NumericSetting.h"
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namespace ControllerEmu
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{
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AnalogStick::AnalogStick(const char* const name_, ControlState default_radius)
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: AnalogStick(name_, name_, default_radius)
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{
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}
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AnalogStick::AnalogStick(const char* const name_, const char* const ui_name_,
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ControlState default_radius)
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: ControlGroup(name_, ui_name_, GroupType::Stick)
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{
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for (auto& named_direction : named_directions)
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controls.emplace_back(std::make_unique<Input>(Translate, named_direction));
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controls.emplace_back(std::make_unique<Input>(Translate, _trans("Modifier")));
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numeric_settings.emplace_back(
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std::make_unique<NumericSetting>(_trans("Radius"), default_radius, 0, 100));
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numeric_settings.emplace_back(std::make_unique<NumericSetting>(_trans("Dead Zone"), 0, 0, 50));
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}
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AnalogStick::StateData AnalogStick::GetState()
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{
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ControlState y = controls[0]->control_ref->State() - controls[1]->control_ref->State();
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ControlState x = controls[3]->control_ref->State() - controls[2]->control_ref->State();
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const ControlState radius = numeric_settings[SETTING_RADIUS]->GetValue();
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const ControlState deadzone = numeric_settings[SETTING_DEADZONE]->GetValue();
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const ControlState m = controls[4]->control_ref->State();
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const ControlState ang = atan2(y, x);
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const ControlState ang_sin = sin(ang);
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const ControlState ang_cos = cos(ang);
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ControlState dist = sqrt(x * x + y * y);
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// dead zone code
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dist = std::max(0.0, dist - deadzone);
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dist /= (1 - deadzone);
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// radius
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dist *= radius;
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// The modifier halves the distance by 50%, which is useful
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// for keyboard controls.
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if (m)
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dist *= 0.5;
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y = std::max(-1.0, std::min(1.0, ang_sin * dist));
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x = std::max(-1.0, std::min(1.0, ang_cos * dist));
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return {x, y};
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}
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} // namespace ControllerEmu
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