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


namespace MoreMountains.Tools
{
    /// <summary>
    /// Decisions are components that will be evaluated by transitions, every frame, and will return true or false. Examples include time spent in a state, distance to a target, or object detection within an area.  
    /// </summary>
    public abstract class AIDecision : MonoBehaviour
    {
        /// Decide will be performed every frame while the Brain is in a state this Decision is in. Should return true or false, which will then determine the transition's outcome.
        public abstract bool Decide();

        public string Label;
        public bool DecisionInProgress { get; set; }
        protected AIBrain _brain;
        
        /// <summary>
        /// On Awake we grab our Brain
        /// </summary>
        protected virtual void Awake()
        {
            _brain = this.gameObject.GetComponentInParent<AIBrain>();
        }

        /// <summary>
        /// On Start we initialize our Decision
        /// </summary>
        protected virtual void Start()
        {
            Initialization();
        }

        /// <summary>
        /// Meant to be overridden, called when the game starts
        /// </summary>
        public virtual void Initialization()
        {

        }

        /// <summary>
        /// Meant to be overridden, called when the Brain enters a State this Decision is in
        /// </summary>
        public virtual void OnEnterState()
        {
            DecisionInProgress = true;
        }

        /// <summary>
        /// Meant to be overridden, called when the Brain exits a State this Decision is in
        /// </summary>
        public virtual void OnExitState()
        {
            DecisionInProgress = false;
        }
    }
}