1 files changed, 73 insertions, 0 deletions

diff --git a/src/input_common/motion_input.h b/src/input_common/motion_input.h
new file mode 100644
index 000000000..abb957f04
--- /dev/null
+++ b/src/input_common/motion_input.h
@@ -0,0 +1,73 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included
+
+#pragma once
+
+#include "common/common_types.h"
+#include "common/quaternion.h"
+#include "common/vector_math.h"
+#include "core/frontend/input.h"
+
+namespace InputCommon {
+
+class MotionInput {
+public:
+    MotionInput(f32 new_kp, f32 new_ki, f32 new_kd);
+
+    MotionInput(const MotionInput&) = default;
+    MotionInput& operator=(const MotionInput&) = default;
+
+    MotionInput(MotionInput&&) = default;
+    MotionInput& operator=(MotionInput&&) = default;
+
+    void SetAcceleration(const Common::Vec3f& acceleration);
+    void SetGyroscope(const Common::Vec3f& gyroscope);
+    void SetQuaternion(const Common::Quaternion<f32>& quaternion);
+    void SetGyroDrift(const Common::Vec3f& drift);
+    void SetGyroThreshold(f32 threshold);
+
+    void EnableReset(bool reset);
+    void ResetRotations();
+
+    void UpdateRotation(u64 elapsed_time);
+    void UpdateOrientation(u64 elapsed_time);
+
+    std::array<Common::Vec3f, 3> GetOrientation() const;
+    Common::Vec3f GetAcceleration() const;
+    Common::Vec3f GetGyroscope() const;
+    Common::Vec3f GetRotations() const;
+    Common::Quaternion<f32> GetQuaternion() const;
+    Input::MotionStatus GetMotion() const;
+    Input::MotionStatus GetRandomMotion(int accel_magnitude, int gyro_magnitude) const;
+
+    bool IsMoving(f32 sensitivity) const;
+    bool IsCalibrated(f32 sensitivity) const;
+
+private:
+    void ResetOrientation();
+    void SetOrientationFromAccelerometer();
+
+    // PID constants
+    f32 kp;
+    f32 ki;
+    f32 kd;
+
+    // PID errors
+    Common::Vec3f real_error;
+    Common::Vec3f integral_error;
+    Common::Vec3f derivative_error;
+
+    Common::Quaternion<f32> quat{{0.0f, 0.0f, -1.0f}, 0.0f};
+    Common::Vec3f rotations;
+    Common::Vec3f accel;
+    Common::Vec3f gyro;
+    Common::Vec3f gyro_drift;
+
+    f32 gyro_threshold = 0.0f;
+    u32 reset_counter = 0;
+    bool reset_enabled = true;
+    bool only_accelerometer = true;
+};
+
+} // namespace InputCommon