using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace StgSharp_Logic
{
    public class EntityContainer
    {
        private Counter<int> _limit;
        private float _leftBorder;
        private float _rightBorder;
        private float _topBorder;
        private float _bottomBorder;
        private LinkedList _container;
        
        public LinkedList Container
        {
            get { return _container; }
            set { _container = value; }
        }

        public float LeftBorder
        {
            get { return _leftBorder; }
            set { _leftBorder = value; }
        }
        public float RightBorder
        {
            get { return _rightBorder; }
            set { _rightBorder = value; }
        }
        public float TopBorder
        {
            get { return _topBorder; }
            set { _topBorder = value; }
        }
        public float BottomBorder
        {
            get { return _bottomBorder; }
            set { _bottomBorder = value; }
        }
        
        public EntityContainer(Counter<int> counter)
        {
            this._limit = counter;
            this.Container = new LinkedList(_limit);
        }        

        public void Add(LinkedTarget target)
        {
            if (true)    //对target类型进行判断，应当只是实体
            {
            _container.Add(target);
            }
        }

        public void RemoveAt(int id)
        {
            _container.Remove(id);
        }

        //Move an entity from one container to another one
        public void Move(LinkedTarget target, EntityContainer targetContainer)
        {
            target.Previous = target.Next;
            target.Next = target.Previous;
            targetContainer.Add(target);

        }

        //What should a container do on each rendering frame
        //This method should be overriden
        public void OnRender()
        { 
            //坐标刷新
            //边界判定
            //碰撞判定
        }

        public void ReportCapacity()
        {
            Console.WriteLine(_limit.Value);
        }
    }
}