using UnityEngine;

public class MouseInputTool : Singleton<MouseInputTool>
{

    private float mouseLX;
    /// <summary>
    /// 鼠标左键X轴变化量
    /// </summary>
    public float MouseLX
    {
        get { return mouseLX; }
    }
    private float mouseLY;
    /// <summary>
    /// 鼠标左键Y轴变化量
    /// </summary>
    public float MouseLY
    {
        get { return mouseLY; }
    }
    private float mouseRX;
    /// <summary>
    /// 鼠标右键X轴变化量
    /// </summary>
    public float MouseRX
    {
        get { return mouseRX; }
    }
    private float mouseRY;
    /// <summary>
    /// 鼠标右键Y轴变化量
    /// </summary>
    public float MouseRY
    {
        get { return mouseRY; }
    }
    private float mouseCX;
    /// <summary>
    /// 鼠标中键X轴变化量
    /// </summary>
    public float MouseCX
    {
        get { return mouseCX; }
    }
    private float mouseCY;
    /// <summary>
    /// 鼠标中键Y轴变化量
    /// </summary>
    public float MouseCY
    {
        get { return mouseCY; }
    }
    private float mouseCWheel;
    /// <summary>
    /// 鼠标中键滚动变化量
    /// </summary>
    public float MouseCWheel
    {
        get { return mouseCWheel; }
    }

    void Update()
    {
        // 获取鼠标变量
        if (Input.GetMouseButton(0))
        {
            mouseLX += Input.GetAxis("Mouse X");
            mouseLY += Input.GetAxis("Mouse Y");
        }
        if (Input.GetMouseButton(1))
        {
            mouseRX += Input.GetAxis("Mouse X");
            mouseRY += Input.GetAxis("Mouse Y");
        }
        if (Input.GetMouseButton(2))
        {
            mouseCX += Input.GetAxis("Mouse X");
            mouseCY += Input.GetAxis("Mouse Y");
        }
        mouseCWheel += Input.GetAxis("Mouse ScrollWheel");

        // 计算鼠标变量衰减
        mouseLX = Mathf.Abs(mouseLX) > 0.1f ? Mathf.Lerp(mouseLX, 0, Time.deltaTime) : 0;
        mouseLY = Mathf.Abs(mouseLY) > 0.1f ? Mathf.Lerp(mouseLY, 0, Time.deltaTime) : 0;
        mouseRX = Mathf.Abs(mouseRX) > 0.1f ? Mathf.Lerp(mouseRX, 0, Time.deltaTime) : 0;
        mouseRY = Mathf.Abs(mouseRY) > 0.1f ? Mathf.Lerp(mouseRY, 0, Time.deltaTime) : 0;
        mouseCX = Mathf.Abs(mouseCX) > 0.1f ? Mathf.Lerp(mouseCX, 0, Time.deltaTime) : 0;
        mouseCY = Mathf.Abs(mouseCY) > 0.1f ? Mathf.Lerp(mouseCY, 0, Time.deltaTime) : 0;
        mouseCWheel = Mathf.Abs(mouseCWheel) > 0.001f ? Mathf.Lerp(mouseCWheel, 0, Time.deltaTime) : 0;
    }
}