using System;
using UnityEngine;

// Put in Tools.cs (no Tool class tho)
[Serializable]
public class Lerper
{
  public float t = 0;
  public float spring = 1;
  public float dampen = 1;
  float vel;

  public void Update(float to = 1, bool bounce = false)
  {
    float dir = to - t;
    vel += dir * spring * Time.deltaTime;

    if (Mathf.Sign(vel) != Mathf.Sign(dir))
    {
      vel *= 1 - (dampen * Time.deltaTime);
    }
    else
    {
      vel *= 1 - (dampen * 0.33f * Time.deltaTime);
    }

    float newt = t + vel * Time.deltaTime;
    if (bounce && (newt < 0 || newt > 1))
    {
      vel *= -0.5f;
      newt = Mathf.Clamp01(newt);
    }

    t = newt;
  }

  public void Reset()
  {
    t = vel = 0;
  }
}