public void Undo()
{
if (commands.Count == 0)
{
return;
}
// Undo all commands of same type
Type undoType = commands.Peek().GetType();
while (commands.Count > 0 && commands.Peek().GetType() == undoType)
{
ITankCommand undoCommand = commands.Pop();
undoCommand.Undo();
}
Console.WriteLine("COMMAND PlayerTank: Undo()");
// Change back to initial phase
if (commands.Count > 0)
{
if (commands.Peek().GetType() == typeof(TankMoveCommand))
{
SetPhase(new TankMovement(this));
}
}
else
{
SetPhase(new TankMovement(this));
}
}
public void Register(ITankCommand command)
{
if (command == null)
{
throw new ArgumentNullException("command");
}
ITankCommand existedCommand;
if (_commands.TryGetValue(command.Guid, out existedCommand))
{
log.WarnFormat("a tank command with Guid '{0}' (Name='{1}') is already existed. it will be replaced by command with Guid '{2}' (Name='{3}')",
existedCommand.Guid, existedCommand.Name, command.Guid, command.Name);
}
_commands[command.Guid] = command;
}
public void AddCommand(ITankCommand command)
{
commands.Push(command);
}
