dolphin/Source/Core/VideoCommon/FreeLookCamera.h

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// Copyright 2020 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <memory>
#include <optional>
#include "Common/Matrix.h"
#include "Core/FreeLookConfig.h"
class PointerWrap;
class CameraController
{
public:
CameraController() = default;
virtual ~CameraController() = default;
CameraController(const CameraController&) = delete;
CameraController& operator=(const CameraController&) = delete;
CameraController(CameraController&&) = delete;
CameraController& operator=(CameraController&&) = delete;
virtual Common::Matrix44 GetView() const = 0;
virtual Common::Vec2 GetFieldOfViewMultiplier() const = 0;
virtual void DoState(PointerWrap& p) = 0;
virtual bool IsDirty() const = 0;
virtual void SetClean() = 0;
virtual bool SupportsInput() const = 0;
};
class CameraControllerInput : public CameraController
{
public:
Common::Vec2 GetFieldOfViewMultiplier() const final override;
void DoState(PointerWrap& p) override;
bool IsDirty() const final override { return m_dirty; }
void SetClean() final override { m_dirty = false; }
bool SupportsInput() const final override { return true; }
virtual void MoveVertical(float amt) = 0;
virtual void MoveHorizontal(float amt) = 0;
virtual void MoveForward(float amt) = 0;
virtual void Rotate(const Common::Vec3& amt) = 0;
virtual void Rotate(const Common::Quaternion& quat) = 0;
virtual void Reset() = 0;
void IncreaseFovX(float fov);
void IncreaseFovY(float fov);
float GetFovStepSize() const;
void ModifySpeed(float multiplier);
void ResetSpeed();
float GetSpeed() const;
private:
static constexpr float MIN_FOV_MULTIPLIER = 0.025f;
static constexpr float DEFAULT_SPEED = 60.0f;
static constexpr float DEFAULT_FOV_MULTIPLIER = 1.0f;
float m_fov_x_multiplier = DEFAULT_FOV_MULTIPLIER;
float m_fov_y_multiplier = DEFAULT_FOV_MULTIPLIER;
float m_speed = DEFAULT_SPEED;
bool m_dirty = false;
};
class FreeLookCamera
{
public:
FreeLookCamera();
void SetControlType(FreeLook::ControlType type);
Common::Matrix44 GetView() const;
Common::Vec2 GetFieldOfViewMultiplier() const;
void DoState(PointerWrap& p);
bool IsActive() const;
CameraController* GetController() const;
private:
std::optional<FreeLook::ControlType> m_current_type;
std::unique_ptr<CameraController> m_camera_controller;
};
extern FreeLookCamera g_freelook_camera;