Streamingle_URP/Assets/Scripts/Streamingle/StreamingleControl/Input/InputHandler.cs

using UnityEngine;

public class InputHandler : MonoBehaviour
{
    private Vector2 lastMousePosition;
    private float lastScrollValue;
    private bool isRightMouseHeld;
    private bool isMiddleMouseHeld;
    private bool isOrbitActive;
    private bool isZoomActive;
    private bool isCtrlRightZoomActive;

    // 현재 활성화된 입력 모드 (충돌 방지)
    private InputMode currentMode = InputMode.None;

    private enum InputMode
    {
        None,
        Orbit,          // Alt + 우클릭 또는 Alt + 좌클릭
        Zoom,           // Ctrl + 좌클릭
        CtrlRightZoom,  // Ctrl + 우클릭
        Rotation,       // 우클릭
        Pan             // 휠클릭
    }

    // 카메라 컨트롤 시스템 참조
    private CameraControlSystem cameraControlSystem;

    private void Start()
    {
        // CameraControlSystem 찾기
        cameraControlSystem = FindAnyObjectByType<CameraControlSystem>();
        if (cameraControlSystem == null)
        {
            Debug.LogWarning("[InputHandler] CameraControlSystem을 찾을 수 없습니다.");
        }
    }

    private void Update()
    {
        // 마우스 버튼 Raw 상태
        bool leftMouse = Input.GetMouseButton(0);
        bool rightMouse = Input.GetMouseButton(1);
        bool middleMouse = Input.GetMouseButton(2);
        bool altKey = Input.GetKey(KeyCode.LeftAlt) || Input.GetKey(KeyCode.RightAlt);
        bool ctrlKey = Input.GetKey(KeyCode.LeftControl) || Input.GetKey(KeyCode.RightControl);

        // 모든 마우스 버튼이 해제되면 모드 리셋
        if (!leftMouse && !rightMouse && !middleMouse)
        {
            currentMode = InputMode.None;
        }

        // 입력 우선순위에 따라 모드 결정 (이미 활성화된 모드가 없을 때만)
        if (currentMode == InputMode.None)
        {
            if (altKey && (rightMouse || leftMouse))
            {
                currentMode = InputMode.Orbit;
            }
            else if (ctrlKey && rightMouse)
            {
                currentMode = InputMode.CtrlRightZoom;
            }
            else if (ctrlKey && leftMouse)
            {
                currentMode = InputMode.Zoom;
            }
            else if (rightMouse)
            {
                currentMode = InputMode.Rotation;
            }
            else if (middleMouse)
            {
                currentMode = InputMode.Pan;
            }
        }

        // 현재 모드에 따라 상태 설정
        isOrbitActive = (currentMode == InputMode.Orbit) && (rightMouse || leftMouse) && altKey;
        isZoomActive = (currentMode == InputMode.Zoom) && leftMouse && ctrlKey;
        isCtrlRightZoomActive = (currentMode == InputMode.CtrlRightZoom) && rightMouse && ctrlKey;
        isRightMouseHeld = (currentMode == InputMode.Rotation) && rightMouse;
        isMiddleMouseHeld = (currentMode == InputMode.Pan) && middleMouse;

        // 모드가 해제되면 None으로 전환
        if (currentMode == InputMode.Orbit && ((!rightMouse && !leftMouse) || !altKey))
        {
            currentMode = InputMode.None;
        }
        else if (currentMode == InputMode.CtrlRightZoom && (!rightMouse || !ctrlKey))
        {
            currentMode = InputMode.None;
        }
        else if (currentMode == InputMode.Zoom && (!leftMouse || !ctrlKey))
        {
            currentMode = InputMode.None;
        }
        else if (currentMode == InputMode.Rotation && !rightMouse)
        {
            currentMode = InputMode.None;
        }
        else if (currentMode == InputMode.Pan && !middleMouse)
        {
            currentMode = InputMode.None;
        }

        // 마우스 위치 업데이트
        lastMousePosition = Input.mousePosition;
        lastScrollValue = Input.mouseScrollDelta.y;
    }

    public bool IsRightMouseHeld() => isRightMouseHeld;
    public bool IsMiddleMouseHeld() => isMiddleMouseHeld;
    public bool IsOrbitActive() => isOrbitActive;
    public bool IsZoomActive() => isZoomActive;
    public bool IsCtrlRightZoomActive() => isCtrlRightZoomActive;

    /// <summary>
    /// 현재 어떤 입력 모드도 활성화되지 않았는지 확인합니다.
    /// </summary>
    public bool IsIdle() => currentMode == InputMode.None;

    public Vector2 GetLookDelta()
    {
        return new Vector2(
            Input.GetAxis("Mouse X"),
            Input.GetAxis("Mouse Y")
        );
    }

    public float GetZoomDelta()
    {
        return Input.mouseScrollDelta.y;
    }

    public Vector2 GetMousePosition()
    {
        return Input.mousePosition;
    }

    // 카메라 컨트롤 시스템 관련 메서드들
    public CameraControlSystem GetCameraControlSystem()
    {
        return cameraControlSystem;
    }

    public bool IsFunctionKeyPressed(KeyCode keyCode)
    {
        return Input.GetKeyDown(keyCode);
    }
}