using System;
using System.Collections.Generic;
using System.Text;

namespace RungeKutta
{
    public struct State
    {
        public float position, velocity, acceleration;
        public float prevPos, prevVel, prevAccel;

        public static State operator * (State lhs, float num)
        {
            State newState = new State();
            newState.position = lhs.position * num;
            newState.velocity = lhs.velocity * num;
            newState.acceleration = lhs.acceleration * num;

            newState.prevPos = lhs.prevPos * num;
            newState.prevVel = lhs.prevVel * num;
            newState.prevAccel = lhs.prevAccel * num;

            return newState;
        }

        public static State operator + (State lhs, State other)
        {
            State newState = new State();
            newState.position = (lhs.position + other.position);
            newState.velocity = (lhs.velocity + other.velocity);
            newState.acceleration = (lhs.acceleration + other.acceleration);
            newState.prevPos = (lhs.prevPos + other.prevPos);
            newState.prevVel = (lhs.prevVel + other.prevVel);
            newState.prevAccel = (lhs.prevAccel + other.prevAccel);

            return newState;
        }
    }
}