Input.h

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#pragma once
#include <unordered_map>
#include <variant>
 
#include "../Core/Core.h"
#include "../Math.h"
#include "KeyCode.h"
 
namespace Shit {
    class SHIT_API Input {
    public:
        bool isKeyDown(const KeyCode code);         
        bool isKeyPressed(const KeyCode code);       
        bool isKeyReleased(const KeyCode code);      
 
        bool isMouseButtonDown(const MouseButton code);     
        bool isMouseButtonPressed(const MouseButton code);   
        bool isMouseButtonReleased(const MouseButton code);  
        Vector2 getMousePosition();                          
 
        void update(); 
 
        void handleEvent(const SDL_Event& event); 
 
        // --- 静态API ---
        static Input& GetInstance();
        inline static bool IsKeyDown(const KeyCode code) { return GetInstance().isKeyDown(code); }
        inline static bool IsKeyPressed(const KeyCode code) { return GetInstance().isKeyPressed(code); }
        inline static bool IsKeyReleased(const KeyCode code) { return GetInstance().isKeyReleased(code); }
        inline static bool IsMouseButtonDown(const MouseButton code) { return GetInstance().isMouseButtonDown(code); }
        inline static bool IsMouseButtonPressed(const MouseButton code) { return GetInstance().isMouseButtonPressed(code); }
        inline static bool IsMouseButtonReleased(const MouseButton code) { return GetInstance().isMouseButtonReleased(code); }
        inline static void HandleEvent(const SDL_Event& event) { GetInstance().handleEvent(event); }
        inline static void Update() { GetInstance().update(); }
        inline static Vector2 GetMousePosition() { return GetInstance().getMousePosition(); }
    private:
        // 按键状态
        std::array<bool, static_cast<int>(KeyCode::Count)> m_currentKeys;
        std::array<bool, static_cast<int>(KeyCode::Count)> m_previousKeys;
 
        // 鼠标按键状态
        std::array<bool, static_cast<int>(MouseButton::Count)> m_currentMouseButtons;
        std::array<bool, static_cast<int>(MouseButton::Count)> m_previousMouseButtons;
 
        // 鼠标滚动增量
        Vector2 m_mouseScroll;
        
        Input();
        ~Input();
 
        Input(const Input&) = delete;
        Input& operator=(const Input&) = delete;
        Input(Input&&) = delete;
        Input& operator=(Input&&) = delete;
    };
}