namespace Holo.Virtual.Rooms.Pathfinding
{
    using System;
    using System.Collections;

    public class AStarNode : IComparable
    {
        private double FCost;
        private double FGoalEstimate;
        private AStarNode FGoalNode;
        private AStarNode FParent;

        public AStarNode(AStarNode AParent, AStarNode AGoalNode, double ACost)
        {
            this.FParent = AParent;
            this.FCost = ACost;
            this.GoalNode = AGoalNode;
        }

        public virtual void Calculate()
        {
            this.FGoalEstimate = 0.0;
        }

        public int CompareTo(object obj)
        {
            return -this.TotalCost.CompareTo(((AStarNode) obj).TotalCost);
        }

        public override bool Equals(object obj)
        {
            return this.IsSameState((AStarNode) obj);
        }

        public override int GetHashCode()
        {
            return base.GetHashCode();
        }

        public virtual void GetSuccessors(ArrayList ASuccessors)
        {
        }

        public bool IsGoal()
        {
            return this.IsSameState(this.FGoalNode);
        }

        public virtual bool IsSameState(AStarNode ANode)
        {
            return false;
        }

        public virtual void PrintNodeInfo()
        {
        }

        public double Cost
        {
            get
            {
                return this.FCost;
            }
            set
            {
                this.FCost = value;
            }
        }

        public double GoalEstimate
        {
            get
            {
                this.Calculate();
                return this.FGoalEstimate;
            }
            set
            {
                this.FGoalEstimate = value;
            }
        }

        public AStarNode GoalNode
        {
            get
            {
                return this.FGoalNode;
            }
            set
            {
                this.FGoalNode = value;
                this.Calculate();
            }
        }

        public AStarNode Parent
        {
            get
            {
                return this.FParent;
            }
            set
            {
                this.FParent = value;
            }
        }

        public double TotalCost
        {
            get
            {
                return (this.Cost + this.GoalEstimate);
            }
        }
    }
}