using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.U2D;

public class WaterSpring : MonoBehaviour
{
    public float Velocity { get; set; } = 0f;
    private float _force = 0f;
    public float Height { get; set; } = 0f;
    private float _targetHeight = 0f;
    private int _waveIndex;
    private SpriteShapeController _spriteShapeController;

    public void Init(SpriteShapeController spriteShapeController)
    {
        _spriteShapeController = spriteShapeController;
        var index=transform.GetSiblingIndex();
        _waveIndex = index + 1;

        Velocity = 0;
        Height = transform.localPosition.y;
        Height = transform.localPosition.y;
    }

    public void WavePointUpdate()
    {
        if (_spriteShapeController != null)
        {
            Spline waterSpline = _spriteShapeController.spline;
            Vector3 wavePosition = waterSpline.GetPosition(_waveIndex);
            waterSpline.SetPosition(_waveIndex, new Vector3(wavePosition.x, transform.localPosition.y, wavePosition.z));
        }
    }

    public void WaveSpringUpdate(float springStiffness, float dampening)
    {
       
        Height = transform.localPosition.y;
        var maximumExtension = Height - _targetHeight;

        var loss = -dampening * Velocity;
        _force = -springStiffness * maximumExtension+loss;
        Velocity +=_force;

        var y=transform.localPosition.y;
        transform.localPosition = new Vector3(transform.position.x, y+Velocity, transform.position.z);
    }
}