SpringNode.cs

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

//This node can be connected to multiple springs
public abstract class SpringNode
{
    //Is this node connected to a wall?
    public bool isFixed;

    //The total force on this node from the springs attached to it
    //public Vector2 force;

    //Gravity
    //private readonly Vector2 g = new(0f, -9.81f);



    public SpringNode(bool isFixed = false)
    {
        this.isFixed = isFixed;
    }



    //public void UpdateNodeState(float dt)
    //{
    //    if (isFixed)
    //    {
    //        return;
    //    }
    
    //    float m = 1f;
    
    //    //Add gravity
    //    Vector2 F_gravity = m * g;

    //    force += F_gravity;


    //    //Calculate the acceleration on this node
    //    //F = m*a -> a = F/m
    //    Vector2 a = force / m;


    //    //Move the simulation forward one step
    //    this.vel += dt * a;
    //    this.pos += dt * this.vel;

    //    //Add some damping
    //    //this.vel *= 0.99f;

    //    //Reset F
    //    force = Vector2.zero;        
    //}
}