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

namespace Enemy {
    public abstract class Enemy : MonoBehaviour {

        // Enemy states
        protected enum EnemyStates {
            Patrol,
            Alert,
            Hostile
        }

        // How far the enemy can see
        protected int visionLength;
        // How far the enemy will walk from its spawn point
        protected int walkingDistance;

        // List of enemies active in the game
        List<Enemy> enemies = new List<Enemy>();

        protected void Start() {
            // Set every Enemy to do their default state
            DoAction(EnemyStates.Patrol);
        }

        protected void Update() {
            for(int i = 0; i < enemies.Count; i++) {
                if (enemies[i].ShouldChangeState()) {
                    enemies[i].UpdateEnemyState();
                }
            }
        }

        public virtual void UpdateEnemyState() {

        }

        protected void DoAction(EnemyStates enemyState) {
            switch(enemyState) {
                case EnemyStates.Patrol:
                    // Patrol
                    break;
                case EnemyStates.Alert:
                    // Alert
                    break;
                case EnemyStates.Hostile:
                    // Hostile
                    break;
            }
        }

        protected virtual bool ShouldChangeState() {
            // If player is seen by guard etc. return true
            return false;
        }
    }
}