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/*Copyright (c) 2011, Florent DEVILLE.                                      */
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using System.Collections.Generic;
using GE.World.Entities;
using Microsoft.Xna.Framework;

namespace GE.Manager
{
    class EnemyManager
    {
        /// <summary>
        /// Singleton
        /// </summary>
        static EnemyManager _instance = null;

        /// <summary>
        /// List of enemies
        /// </summary>
        List<EnemyEntity> _listOfEnemies;

        /// <summary>
        /// Constructor
        /// </summary>
        private EnemyManager()
        {
            _listOfEnemies = new List<EnemyEntity>();
        }

        /// <summary>
        /// Return the singleton
        /// </summary>
        public static EnemyManager Instance { get { if (_instance == null) _instance = new EnemyManager(); return _instance; } }

        /// <summary>
        /// Add an enemy to the manager
        /// </summary>
        /// <param name="e"></param>
        public void addEnemies(EnemyEntity e)
        {
            _listOfEnemies.Add(e);
        }

        /// <summary>
        /// Clear the manager
        /// </summary>
        public void clear()
        {
            _listOfEnemies.Clear();
        }

        /// <summary>
        /// Set the active state of the enemies
        /// </summary>
        /// <param name="bActive"></param>
        public void deactivate()
        {
            foreach (EnemyEntity e in _listOfEnemies)
            {
                e.deactivate();
            }
        }

    }
}
