public ActionResult Index(TicTacToeGameRequest gameRequest)
{
switch (gameRequest.GameMethod)
{
case "Get Placement":
var getPlacementRequest = new GetPlacementRequest();
UpdateModel(getPlacementRequest);
var response = GetPlacement(getPlacementRequest);
return(Json(response));
default:
throw new Exception("Unhandled game method: " + gameRequest.GameMethod);
}
}
public override IGameResponse ProcessRequest <T>(IGameRequest request)
{
IGameResponse response = null;
if (request is GetPlacementRequest)
{
GetPlacementRequest gpr = (GetPlacementRequest)request;
response = GetPlacementRequest(gpr);
}
else
{
throw new NotImplementedException();
}
return(response);
}
public override IGameStatus ProcessGameStep()
{
// Get the next placement for the current player
var request = new GetPlacementRequest(_CurrentPlayer.Name, _Grid);
var response = _CurrentPlayer.ProcessRequest <GetPlacementResponse>(request) as GetPlacementResponse;
// Is it a valid placement?
if (IsValidPlacement(response.Placement))
{
// Place it
_Grid[response.Placement.X][response.Placement.Y] = _CurrentPlayer.Name;
// Switch the current player to the next one
_CurrentPlayer = _CurrentPlayer == Players[0] ? Players[1] : Players[0];
}
return(GetGameStatus());
}
protected virtual GetPlacementResponse GetPlacement(GetPlacementRequest request)
{
GetPlacementResponse response = new GetPlacementResponse();
// Get a list of all empty locations
List <Coordinate> emptyLocations = new List <Coordinate>();
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
if (string.IsNullOrEmpty(request.Grid[i][j]))
{
emptyLocations.Add(new Coordinate(i, j));
}
}
}
// Can we win?
Coordinate winningLocation = null;
foreach (Coordinate emptyLocation in emptyLocations)
{
if (IsWinningLocation(emptyLocation, request.Grid, request.MyName))
{
winningLocation = emptyLocation;
break;
}
}
if (winningLocation != null)
{
response.Placement = winningLocation;
return(response);
}
// Can we keep the opponent from winning?
string opponentName = string.Empty;
for (int i = 0; i < 3 && opponentName.Length == 0; i++)
{
for (int j = 0; j < 3 && opponentName.Length == 0; j++)
{
string name = request.Grid[i][j];
if (string.IsNullOrEmpty(name))
{
continue;
}
if (name == request.MyName)
{
continue;
}
opponentName = name;
}
}
if (!string.IsNullOrEmpty(opponentName))
{
winningLocation = null;
foreach (Coordinate emptyLocation in emptyLocations)
{
if (IsWinningLocation(emptyLocation, request.Grid, opponentName))
{
winningLocation = emptyLocation;
break;
}
}
if (winningLocation != null)
{
response.Placement = winningLocation;
return(response);
}
}
// Choose randomly
Random random = new Random();
Coordinate placement = emptyLocations[random.Next(emptyLocations.Count)];
response.Placement = placement;
return(response);
}
