59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
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// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "input_common/analog_from_button.h"
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namespace InputCommon {
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class Analog final : public Input::AnalogDevice {
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public:
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using Button = std::unique_ptr<Input::ButtonDevice>;
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Analog(Button up_, Button down_, Button left_, Button right_, Button modifier_,
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float modifier_scale_)
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: up(std::move(up_)), down(std::move(down_)), left(std::move(left_)),
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right(std::move(right_)), modifier(std::move(modifier_)),
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modifier_scale(modifier_scale_) {}
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std::tuple<float, float> GetStatus() const override {
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constexpr float SQRT_HALF = 0.707106781f;
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int x = 0, y = 0;
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if (right->GetStatus())
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++x;
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if (left->GetStatus())
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--x;
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if (up->GetStatus())
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++y;
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if (down->GetStatus())
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--y;
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float coef = modifier->GetStatus() ? modifier_scale : 1.0f;
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return std::make_tuple(x * coef * (y == 0 ? 1.0f : SQRT_HALF),
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y * coef * (x == 0 ? 1.0f : SQRT_HALF));
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}
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private:
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Button up;
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Button down;
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Button left;
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Button right;
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Button modifier;
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float modifier_scale;
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};
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std::unique_ptr<Input::AnalogDevice> AnalogFromButton::Create(const Common::ParamPackage& params) {
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const std::string null_engine = Common::ParamPackage{{"engine", "null"}}.Serialize();
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auto up = Input::CreateDevice<Input::ButtonDevice>(params.Get("up", null_engine));
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auto down = Input::CreateDevice<Input::ButtonDevice>(params.Get("down", null_engine));
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auto left = Input::CreateDevice<Input::ButtonDevice>(params.Get("left", null_engine));
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auto right = Input::CreateDevice<Input::ButtonDevice>(params.Get("right", null_engine));
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auto modifier = Input::CreateDevice<Input::ButtonDevice>(params.Get("modifier", null_engine));
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auto modifier_scale = params.Get("modifier_scale", 0.5f);
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return std::make_unique<Analog>(std::move(up), std::move(down), std::move(left),
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std::move(right), std::move(modifier), modifier_scale);
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}
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} // namespace InputCommon
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