public static bool IsValid(PositionContext position, int index)
{
Field field = position.GetField(index);
if (field.SurroundingEmptySquares != 0)
{
if ((position.GetLeft(index) != null && PositionHelper.AreEnemies(field, position.GetLeft(index)))
&&
(position.GetRight(index) != null && PositionHelper.AreEnemies(field, position.GetRight(index)))
&&
(position.GetLower(index) != null && PositionHelper.AreEnemies(field, position.GetLower(index)))
&&
(position.GetUpper(index) != null && PositionHelper.AreEnemies(field, position.GetUpper(index))))
{
// TODO
// if we are putting the stone between all the enemies pawn
// there must be beating move
}
}
return(true);
}
/// <summary>
/// </summary>
/// <param name="positionContext"></param>
/// <returns></returns>
private MoveCandidate FindCandidate(PositionContext positionContext)
{
List <int> candidates = new List <int> ();
List <Chain> chainsToBeat = new List <Chain>();
int biggestSizeToBeat = 0;
Chain biggestToBeat = null;
// find chain to beat
foreach (var chain in positionContext.Chains.Where(x => x.Color != positionContext.Move))
{
if (chain.SurroundingEmptyFields.Count == 1)
{
chainsToBeat.Add(chain);
if (chain.Count > biggestSizeToBeat)
{
biggestSizeToBeat = chain.Count;
biggestToBeat = chain;
}
}
}
// try to defend
List <Chain> chainsToDefend = new List <Chain>();
int biggestLost = 0;
Chain biggestChainToLost = null;
foreach (var chain in positionContext.Chains.Where(x => x.Color == positionContext.Move))
{
if (chain.SurroundingEmptyFields.Count == 1)
{
chainsToDefend.Add(chain);
if (chain.Count > biggestLost)
{
biggestLost = chain.Count;
biggestChainToLost = chain;
}
}
}
// TODO defence by beating
if (biggestSizeToBeat > 0 && biggestSizeToBeat >= biggestLost)
{
return(new MoveCandidate(biggestToBeat.SurroundingEmptyFields.First()));
}
else
{
if (biggestLost > 0)
{
return(new MoveCandidate(biggestChainToLost.SurroundingEmptyFields.First()));
}
}
// TODO assert is not deadly move
if (biggestLost > 0)
{
// TODO has surrounding empty spaces/ could be connected to another chain without self-killing
//this.gameContext.GetField(biggestChainToLost.SurroundingEmptyFields.First()).
return(new MoveCandidate(biggestChainToLost.SurroundingEmptyFields.First()));
}
// find biggest chain and try to surround
int biggestSizeToSurround = 0;
Chain biggest = null;
foreach (var chain in positionContext.Chains.Where(x => x.Color != positionContext.Move))
{
if (chain.Count > biggestSizeToSurround)
{
biggestSizeToSurround = chain.Count;
biggest = chain;
}
}
// TODO
if (biggestSizeToSurround > 0)
{
return(new MoveCandidate(biggest.SurroundingEmptyFields.First()));
}
int dimension = (int)Settings.BoardSize;
// TODO
// very, very stupid clause
while (true)
{
int fieldIndex = this.randomNumber(0, dimension * dimension - 1);
if (positionContext.GetField(fieldIndex).FieldState.Equals(States.Empty))
{
return(new MoveCandidate(fieldIndex));
}
}
// TODO
return(new MoveCandidate(4));
}