private async Task ProcessCommand(CommandRequestedMessage requestedCommand)
{
// Graba refernce to the player and split up the player command input data.
IPlayer player = requestedCommand.Content.Target;
string[] commandAndArgs = requestedCommand.Content.CommandData.Split(' ');
if (commandAndArgs.Length == 0)
{
// TODO: Determine how to present "invalid command" back to the player.
return;
}
//Grab first element as the command
string command = commandAndArgs.First();
// Check if we command already underway, if so attempt to resume it.
List <PlayerCommandHistoryItem> existingCommandsStack = null;
if (this.playerCommandsPendingCompletion.TryGetValue(player, out existingCommandsStack))
{
//Instead of grabbing the top stack, iterate through the stack to make sure there isn't a nested command.
//Start at the last added entry of the list and work our way down until we find a match, if any.
for (int i = existingCommandsStack.Count - 1; i >= 0; i--)
{
PlayerCommandHistoryItem previousCommandItem = existingCommandsStack[i];
// Check if the previous command
if (await previousCommandItem.Command.CanProcessCommand(player, command))
{
//If it can be processed, remove it any any commands made after it. Considered all resolved.
existingCommandsStack.RemoveRange(i, existingCommandsStack.Count - i);
await this.RunCommand(player, command, previousCommandItem.Command, requestedCommand);
return;
}
}
}
//If there were no previous commands executed, check to see if it is a new valid command
if (!this.CommandFactory.IsCommandAvailable(command))
{
// TODO: Determine how to notify player of invalid command.
return;
}
// TODO: Check if we have any elements in the array first.
IActorCommand potentialCommandToExecute = this.CommandFactory.CreateCommand(commandAndArgs.First());
if (!(await potentialCommandToExecute.CanProcessCommand(player, command)))
{
// TODO: Determine how to notify player that the command can't be executed.
return;
}
await this.RunCommand(player, command, potentialCommandToExecute, requestedCommand);
}
private async Task RunCommand(IPlayer player, string command, IActorCommand commandToExecute, CommandRequestedMessage commandMessage)
{
//Process command and return it's current state
CommandResult state = await commandToExecute.ProcessCommand(player, command);
//Send the command results to the assigned Processor
commandMessage.Content.CommandProcessorFactory.ProcessCommandForActor(state, player);
//If completed it doesn't need to be added to the history stack so we can return early.
if (state.IsCompleted)
{
//We don't want to clean up their history here because player still may have other commands
//in process. Also thie cleanup seems to be more setup for when a player is removed from the game.
//await this.CleanupPlayerHistory(player);
return;
}
//Create a new history item and add it to the list.
var historyItem = new PlayerCommandHistoryItem(commandToExecute, commandMessage);
List <PlayerCommandHistoryItem> commandHistoryStack = null;
if (this.playerCommandsPendingCompletion.TryGetValue(player, out commandHistoryStack))
{
commandHistoryStack.Add(historyItem);
return;
}
//If player isn't already in our list, add them.
commandHistoryStack = new List <PlayerCommandHistoryItem>();
this.playerCommandsPendingCompletion.TryAdd(player, commandHistoryStack);
commandHistoryStack.Add(historyItem);
//Register for cleanup of players history when event for Player Deletion is triggered.
player.Deleting += this.CleanupPlayerHistory;
}