public bool Equals(PlacePosition p)
{
if (p == null)
return false;
return (X == p.X) && (Y == p.Y);
}
public bool Equals(PlacePosition p)
{
if (p == null)
{
return(false);
}
return((X == p.X) && (Y == p.Y));
}
void IGamePlayerSync.MakeMove(PlacePosition pos, long playerUserId)
{
var playerId = GetPlayerId(playerUserId);
if (playerId != _currentPlayerId)
throw new ResultException(ResultCodeType.NotYourTurn);
if (pos.X < 0 || pos.X >= Rule.BoardSize ||
pos.Y < 0 || pos.Y >= Rule.BoardSize ||
_boardGridMarks[pos.X, pos.Y] != 0)
{
throw new ResultException(ResultCodeType.BadPosition);
}
MakeMove(pos);
}
private void MakeMove(PlacePosition pos)
{
_boardGridMarks[pos.X, pos.Y] = _currentPlayerId;
_movePositions.Add(pos);
var matchedRow = Logic.FindMatchedRow(_boardGridMarks);
var drawed = _movePositions.Count >= Rule.BoardSize * Rule.BoardSize;
var nextTurnPlayerId = (matchedRow == null && drawed == false) ? 3 - _currentPlayerId : 0;
NotifyToAllObservers((id, o) => o.MakeMove(_currentPlayerId, pos, nextTurnPlayerId));
if (matchedRow != null)
{
EndGame(_currentPlayerId);
}
else if (drawed)
{
EndGame(0);
}
else
{
ScheduleTurnTimeout(_movePositions.Count);
_currentPlayerId = nextTurnPlayerId;
}
}
void IGameObserver.MakeMove(int playerId, PlacePosition pos, int nextTurnPlayerId)
{
_boardGridMarks[pos.X, pos.Y] = playerId;
if (_isPlaying && nextTurnPlayerId == _playerId)
RunTask(() => ThinkAndMakeMoveAsync());
}
// simple AI
public static PlacePosition DetermineMove(int[,] board, int playerId)
{
// If the player has two in a row, they can place a third to get three in a row.
foreach (var rps in RowPositions)
{
var x = 0;
PlacePosition emptyPosition = null;
foreach (var pos in rps)
{
var v = board[pos.X, pos.Y];
if (v == 0)
{
emptyPosition = pos;
}
else if (v == playerId)
{
x += 1;
}
}
if (x == Rule.BoardSize - 1 && emptyPosition != null)
{
return(emptyPosition);
}
}
// If the opponent has two in a row, the player must play the third themselves to block the opponent.
foreach (var rps in RowPositions)
{
var x = 0;
PlacePosition emptyPosition = null;
foreach (var pos in rps)
{
var v = board[pos.X, pos.Y];
if (v == 0)
{
emptyPosition = pos;
}
else if (v != playerId)
{
x += 1;
}
}
if (x == Rule.BoardSize - 1 && emptyPosition != null)
{
return(emptyPosition);
}
}
// Random pick
var positions = new List <PlacePosition>();
for (int x = 0; x < Rule.BoardSize; x++)
{
for (int y = 0; y < Rule.BoardSize; y++)
{
if (board[x, y] == 0)
{
positions.Add(new PlacePosition(x, y));
}
}
}
if (positions.Count > 0)
{
return(positions[new Random().Next(positions.Count)]);
}
return(null);
}