/// <summary>
/// Attempts to fetch a game from the model's data.
/// If the game does not exist, a check is performed to see if the sending client is in a different game.
/// if so, the function closes.
/// Otherwise we create the game, and add the client to the game.
/// Otherwise, if the game exists, the model attemps to add the client to the game.
/// if succeeded, the game now contains 2 different client, so a maze is generated,
/// given a name, and sent to the first client.
/// then a different starting position is given to the same maze and it is sent to the second client.
/// if the client could not be added to the game the function exists.
/// </summary>
/// <param name="from">the client that sent the command.</param>
/// <param name="commandParsed">The parsed command.</param>
public override void Execute(object from, string[] commandParsed)
{
string name = commandParsed[1];
int commandType = 3;
MultiplayerGame g = model.GetMultiplayerGame(name);
// game does not exist
if (g == null)
{
// client is already in a different multiplayer game
if (model.IsClientInGame(from) != null)
{
return;
}
// otherwise create a game
IMaze maze = GenerateOption.CreateMaze(1);
MultiplayerGame game = new MultiplayerGame(model, name, maze);
game.AddClient(from);
model.AddMultiplayerGame(name, game);
}
// game exists
else
{
// add second(different) client to game, and if the game had not been started yet
if (g.AddClient(from) && !g.IsInProgress())
{
g.GameStarted();
string reply;
IMaze maze = g.GetMaze();
IMaze secondMaze;
object client;
string mazeName;
// generate answer for first client
mazeName = name + "_1";
this.model.AddMaze(mazeName, maze);
GenerateAnswer firstClient = BuildMaze(maze, mazeName);
// change starting position for second client
mazeName = name + "_2";
secondMaze = maze.CreateMazeChangeStartPosition();
this.model.AddMaze(mazeName, secondMaze);
GenerateAnswer secondClient = BuildMaze(secondMaze, mazeName);
// first client
g.RetrieveOtherClient(from, out client);
reply = BuildReply(name, commandType, firstClient, secondClient);
model.CompletedTask(client, new View.MessageEventArgs(reply));
// second client ('from' is the second player)
client = from;
reply = BuildReply(name, commandType, secondClient, firstClient);
model.CompletedTask(client, new View.MessageEventArgs(reply));
}
}
}
