using UnityEngine;

namespace State
{
    /// <summary>
    /// State that drives the engine.  OnEnter, OnUpdate, OnFixedUpdate, and OnExit called by parent state machine
    /// </summary>
    public class GameState
    {
        protected Machine StateMachine;
        
        /// <summary>
        /// Called when parent state machine loads this state.
        /// Gives a reference to the parent state machine to the state.
        /// </summary>
        /// <param name="machine"></param>
        public virtual void OnEnter(Machine machine)
        {
            StateMachine = machine;
        }

        // Called when parent StateMachine ChangeState is about to leave this state
        public virtual void OnExit() {}
        public virtual void OnUpdate(float deltaTime) {}
        public virtual void OnFixedUpdate(float deltaTime) {}
    }
}