modernuo/Projects/UOContent/Commands/Generic/Implementors/MultiCommandImplementor.cs

using Server.Targeting;

namespace Server.Commands.Generic
{
    public class MultiCommandImplementor : BaseCommandImplementor
    {
        public MultiCommandImplementor()
        {
            Accessors = new[] { "Multi", "m" };
            SupportRequirement = CommandSupport.Multi;
            AccessLevel = AccessLevel.Counselor;
            Usage = "Multi <command>";
            Description = "Invokes the command on multiple targeted objects.";
        }

        public override void Process(Mobile from, BaseCommand command, string[] args)
        {
            if (command.ValidateArgs(this, new CommandEventArgs(from, command.Commands[0], GenerateArgString(args), args)))
            {
                from.BeginTarget(
                    -1,
                    command.ObjectTypes == ObjectTypes.All,
                    TargetFlags.None,
                    (m, targeted, a) => OnTarget(m, targeted, command, a),
                    args
                );
            }
        }

        public void OnTarget(Mobile from, object targeted, BaseCommand command, string[] args)
        {
            if (!BaseCommand.IsAccessible(from, targeted))
            {
                from.SendLocalizedMessage(500447); // That is not accessible.
                from.BeginTarget(
                    -1,
                    command.ObjectTypes == ObjectTypes.All,
                    TargetFlags.None,
                    (m, t, a) => OnTarget(m, t, command, a),
                    args
                );
                return;
            }

            switch (command.ObjectTypes)
            {
                case ObjectTypes.Both:
                    {
                        if (!(targeted is Item or Mobile))
                        {
                            from.SendMessage("This command does not work on that.");
                            return;
                        }

                        break;
                    }
                case ObjectTypes.Items:
                    {
                        if (targeted is not Item)
                        {
                            from.SendMessage("This command only works on items.");
                            return;
                        }

                        break;
                    }
                case ObjectTypes.Mobiles:
                    {
                        if (targeted is not Mobile)
                        {
                            from.SendMessage("This command only works on mobiles.");
                            return;
                        }

                        break;
                    }
            }

            RunCommand(from, targeted, command, args);

            from.BeginTarget(
                -1,
                command.ObjectTypes == ObjectTypes.All,
                TargetFlags.None,
                (m, t, a) => OnTarget(m, t, command, a),
                args
            );
        }
    }
}