source: branches/StackingProblems/HeuristicLab.Data.MoveVectorData/3.3/Moves/IngoingMove.cs @ 15632

using HeuristicLab.Core;
using HeuristicLab.Data.MoveVectorData.Interfaces;
using System;
using System.Text;
using System.Collections.Generic;

namespace HeuristicLab.Data.MoveVectorData.Moves
{
    public struct IngoingMove : IMove
    {
        public bool Enabled { get; set; }
        public int putdown;

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();
            if (Enabled) sb.Append("(i"); else sb.Append("<i");
            sb.Append(putdown.ToString());
            if (Enabled) sb.Append(")"); else sb.Append(">");
            return sb.ToString();
        }

        public bool TryParse(string s)
        {
            bool enable = false;
            if (s.StartsWith("(i") && s.EndsWith(")"))
            {
                enable = true;
            }
            else if (s.StartsWith("<i") && s.EndsWith(">"))
            {
                enable = false;
            }
            else {
                return false;
            }
            string[] valueStrings = s.Substring(2, s.Length - 1).Split(' ');  
            int val;
            if (!int.TryParse(valueStrings[0], out val))
            {
                return false;
            }
            putdown = val;
            if (!int.TryParse(valueStrings[1], out val))
            {
                return false;
            }
            Enabled = enable;
            return true;
        }

        public void Randomize(IRandom random, int min, int max, int step = 1)
        {
            int numbers = (int)Math.Floor((max - min) / (double)step);
            putdown = random.Next(numbers) * step + min;
            Enabled = true;
        }

        public int Apply(ref StackingArea area, ref Stack inputStack, out int realMoves)
        {
            if (Enabled && area[putdown].CurrentHeight < area[putdown].Length)
            {
                area[putdown].Push(inputStack.Pop());
                realMoves = 1;
                return 1;
            }
            realMoves = 0;
            return 0;
        }

        public IEnumerable<IMove> GenerateNeighbours(IRandom random, int min, int max, int step = 1)
        {
            var moves = new List<IMove>();
            moves.Add(new IngoingMove() { Enabled = !this.Enabled, putdown = this.putdown });
            if(putdown + step <= max)
                moves.Add(new IngoingMove() { Enabled = true, putdown = this.putdown + step });
            if (putdown - step >= min)
                moves.Add(new IngoingMove() { Enabled = true, putdown = this.putdown - step });
            return moves;
        }
    }
}