# actions.t | documentation

    #charset "us-ascii"
    #include "advlite.h"

    property handleTopic;
    property showSuggestions;
    property sayHello;
    property showScore;
    property scoreNotify;
    property showHints;
    property disableHints;
    property activated;
    property extraHintsExist;
    property showExitsCommand;
    property exitsOnOffCommand;
    property isOdor;
    property isNoise;

    DefineSystemAction(Quit)

        execAction(cmd)
        {
            DMsg(quit query, '<.p>Do you really want to quit? (y/n)?\n>');

            if(yesOrNo())
                throw new QuittingException;
        }
    ;

    DefineSystemAction(Undo)

        execAction(cmd)
        {
            if(undo())
            {
                DMsg(undo okay, 'One turn undone: {1}',
                     libGlobal.lastCommandForUndo);

                /* notify all PostUndoObject instances */
                PostUndoObject.classExec();

                return true;
            }
            else
            {
                DMsg(undo failed, 'Undo failed. ');
                return nil;
            }
        }

    ;

    DefineSystemAction(Restart)

        execAction(cmd)
        {
            DMsg(restart query,
                 'Do you really want to start again from the beginning (y/n)?\n>');

            if(inputManager.getInputLine().toLower.startsWith(affirmativeLetter))
                doRestartGame();

        }

        affirmativeLetter = 'y'

        doRestartGame()
        {
            /* before restarting, notify anyone interested of our intentions */
            PreRestartObject.classExec();

            /*
             *   Throw a 'restart' signal; the main entrypoint loop will catch
             *   this and actually perform the restart.
             *
             *   Note that we *could* do the VM reset (via restartGame()) here,
             *   but there's an advantage to doing it in the main loop: we
             *   won't be in the stack context of whatever command we're
             *   performing.  If we did the restart here, it's possible that
             *   some useless objects would survive the VM reset just because
             *   they're referenced from within a caller's stack frame.  Those
             *   objects would immediately go out of scope when we get back to
             *   the main loop, but they might survive long enough to create
             *   apparent inconsistencies.  In particular, if we did a
             *   firstObj/nextObj loop, we could discover those objects and
             *   re-establish more lasting references to them, which we
             *   certainly don't want to do.  By deferring the VM reset until
             *   we get back to the main loop, we'll ensure that objects won't
             *   survive the reset just because they're on the stack
             *   momentarily here.
             */
            throw new RestartSignal();

        }
    ;

    DefineSystemAction(Credits)

        execAction(cmd)
        {
            versionInfo.showCredit();
            "<.p>";
        }
    ;

    DefineSystemAction(About)
        execAction(cmd)
        {
            versionInfo.showAbout();
            "<.p>";
        }
    ;

    DefineSystemAction(Version)
        execAction(cmd)
        {
            local lst = ModuleID.getModuleList();
            foreach(local cur in lst)
               cur.showVersion();

            "<.p>";
        }
    ;

    DefineSystemAction(Exits)
        execAction(cmd)
        {
            if(gExitLister == nil)
                sayNoExitLister();
            else
                gExitLister.showExitsCommand();
        }
    ;

    DefineSystemAction(ExitsMode)
        execAction(cmd)
        {
            if(gExitLister == nil)
            {
                sayNoExitLister();
                return;
            }

            if(cmd.verbProd.on_ != nil)
                gExitLister.exitsOnOffCommand(true, true);

            if(cmd.verbProd.off_ != nil)
                gExitLister.exitsOnOffCommand(nil, nil);

            if(cmd.verbProd.look_ != nil)
                gExitLister.exitsOnOffCommand(nil, true);

            if(cmd.verbProd.stat_ != nil)
                gExitLister.exitsOnOffCommand(true, nil);
        }

    ;

    DefineSystemAction(ExitsColour)
        execAction(cmd)
        {
            if(gExitLister == nil)
            {
                sayNoExitLister();
                return;
            }

            if(defined(statuslineExitLister) && cmd.verbProd.on_ != nil)
            {
                statuslineExitLister.highlightUnvisitedExits =
                    (cmd.verbProd.on_ == 'on');

                DMsg(exit color onoff, 'Okay, colouring of unvisited exits is now
                    {1}.<.p>', cmd.verbProd.on_);
            }

            if(defined(statuslineExitLister) && cmd.verbProd.colour_ != nil)
            {
                statuslineExitLister.unvisitedExitColour = cmd.verbProd.colour_;
                statuslineExitLister.highlightUnvisitedExits = true;
                DMsg(exit color change, 'Okay, unvisited exits in the status line
                    will now be shown in {1}. ', cmd.verbProd.colour_);
            }
        }
    ;

    sayNoExitLister()
    {
        DMsg(no exit lister, 'Sorry, that command is not available in this
                    game, since there\'s no exit lister. ');
    }

    DefineSystemAction(Score)
        execAction(cmd)
        {
            /* show the simple score */
            if (libGlobal.scoreObj != nil)
            {
                /* show the score */
                libGlobal.scoreObj.showScore();

                /*
                 *   Mention the FULL SCORE command to the player if we haven't
                 *   already.  Note that we only want to mention
                 */
                if (!mentionedFullScore)
                {
                    /* explain about it */
                    htmlSay(BMsg(mention full score, 'To see your complete list of
                        achievements, use the <<aHref('full score', 'FULL SCORE',
                                                      'show full score')>> command.
                        '));

                    /* don't mention it again */
                    Score.mentionedFullScore = true;
                }
            }
            else
                /* this game doesn't use scoring */
                scoreNotPresent();

        }

        scoreNotPresent()
        {
              DMsg(score not present, '<.parser>This story doesn&rsquo;t use
                   scoring.<./parser> ');
        }

        mentionedFullScore = nil
    ;

    DefineSystemAction(FullScore)
        execAction(cmd)
        {
            /* show the full score in response to an explicit player request */
            showFullScore();

            /* this counts as a mention of the FULL SCORE command */
            Score.mentionedFullScore = true;
        }

        /* show the full score */
        showFullScore()
        {
            /* show the full score */
            if (libGlobal.scoreObj != nil)
                libGlobal.scoreObj.showFullScore();
            else
                Score.scoreNotPresent;
        }

    ;

    DefineSystemAction(Notify)
        execAction(cmd)
        {
            /* show the current notification status */
            if (libGlobal.scoreObj != nil)
                showNotifyStatus(libGlobal.scoreObj.scoreNotify.isOn);
            else
                commandNotPresent;
        }

          /* show the current score notify status */
        showNotifyStatus(stat)
        {
            DMsg(show notify status, '<.parser>Score notifications are
            currently <<stat ? 'on' : 'off'>>.<./parser> ');
        }
    ;

    DefineSystemAction(NotifyOn)
        execAction(cmd)
        {
            /* turn notifications on, and acknowledge the status */
            if (libGlobal.scoreObj != nil)
            {
                libGlobal.scoreObj.scoreNotify.isOn = true;
                acknowledgeNotifyStatus(true);
            }
            else
                commandNotPresent;
        }
    ;

    DefineSystemAction(NotifyOff)
        execAction(cmd)
        {
            /* turn notifications off, and acknowledge the status */
            if (libGlobal.scoreObj != nil)
            {
                libGlobal.scoreObj.scoreNotify.isOn = nil;
                acknowledgeNotifyStatus(nil);
            }
            else
                commandNotPresent;
        }
    ;

    DefineSystemAction(ToggleDisambigEnumeration)
        execAction(cmd)
        {
            if(libGlobal.enumerateDisambigOptions)
            {
                libGlobal.enumerateDisambigOptions = nil;
                DMsg(disambig enum off, 'Enumeration of disambiguation choices is now off. ');
            }
            else
            {
                libGlobal.enumerateDisambigOptions = true;
                DMsg(disambig enum off, 'Enumeration of disambiguation choices is now on. ');
            }
        }
    ;

    DefineSystemAction(Hints)
        execAction(cmd)
        {
            if(gHintManager == nil)
                sayHintsNotPresent();
            else
                gHintManager.showHints();

        }

        sayHintsNotPresent()
        {
            DMsg(hints not present, '<.parser>Sorry, this story doesn&rsquo;t
                    have any built-in hints.<./parser> ');
        }
    ;

    DefineSystemAction(HintsOff)
        execAction(cmd)
        {
            if(gHintManager == nil)
                DMsg(no hints to disable, '<.parser>This game doesn\'t have any
                    hints to turn off.<./parser> ');
            else
                gHintManager.disableHints();
        }
    ;

    DefineSystemAction(ExtraHints)
        execAction(cmd)
        {
            if(gExtraHintManager == nil || !gExtraHintManager.extraHintsExist())
            {
                DMsg(no extra hints, 'Sorry, there are no extra hints in this game.
                    ');
                return;
            }

            onOff = cmd.verbProd.onOff;

            if(onOff == nil)
            {
                showExtraHintStatus();

                return;

            }
            onOff = onOff.toLower();

            if(onOff == hintsOff)
                gExtraHintManager.deactivate();
            else
                gExtraHintManager.activate();

            DMsg(extra hints on or off, 'Okay; extra hints are now {1}. ', onOff );
        }

        /*
         *   Routine to display message saying that extra hints are on or off.
         *   Translators may want to override this method to display a message if it
         *   can't readily be done in a CustomMessages object.
         */
        showExtraHintStatus()
        {
            local cmdstr = extraHintsCmd + onOrOff(!extraHintsActive).toUpper();

            DMsg(extra hints status,
                'Extra hints are currently <<onOrOff(extraHintsActive)>>. To turn
                them <<onOrOff(!extraHintsActive)>> use the command <<aHref(cmdstr,
                    cmdstr, 'Turn extra hints ' + onOrOff(!extraHintsActive))>>. ',
                     cmdstr);
                return;
        }

        extraHintsActive = (gExtraHintManager != nil && gExtraHintManager.activated)

        onOrOff(stat) { return stat ? hintsOn : hintsOff; }

        onOff = nil

        hintsOff = BMsg(extra hints off, 'off')
        hintsOn = BMsg(extra hints on, 'on')

        extraHintsCmd = BMsg(extra hints command, 'EXTRA ')
    ;

    DefineSystemAction(Brief)
        execAction(cmd)
        {
            if(gameMain.verbose)
            {
                gameMain.verbose = nil;
                DMsg(game now brief, 'The game is now in BRIEF mode. <<first
                      time>>Full room descriptions will now only be shown on the
                    first visit to a room or in response to an explicit
                    <<aHref('LOOK', 'LOOK', 'Look
                        around')>> command.<<only>> ');
            }
            else
                DMsg(game already brief, 'The game is already in BRIEF mode. ');
        }
    ;

    DefineSystemAction(Verbose)
        execAction(cmd)
        {
            if(gameMain.verbose)
                DMsg(game already verbose, 'The game is already in VERBOSE mode. ');
            else
            {
                gameMain.verbose = true;
                DMsg(game now verbose, 'The game is now in VERBOSE mode. <<first
                      time>>Full room descriptions be shown each time a room is
                    visited.<<only>> ');
            }
        }
    ;

    /* Set Inventory to TALL format */
    DefineSystemAction(InventoryTall)
        execAction(cmd)
        {
            /* Register with libGlobal that inventory listing should now be in tall format. */
            libGlobal.inventoryTall = true;

            /* Display a confirmation that this change has just taken place. */
            DMsg(inventory tall, 'Inventory Listing is now set to TALL');
        }
    ;

    /* Set Inventory to WIDE format */
    DefineSystemAction(InventoryWide)
        execAction(cmd)
        {
            /* Register with libGlobal that inventory listing should now be in wide format. */
            libGlobal.inventoryTall = nil;

            /* Display a confirmation that this change has just taken place. */
            DMsg(inventory wide, 'Inventory Listing is now set to WIDE');
        }
    ;

    DefineIAction(Inventory)
        execAction(cmd)
        {
            /*
             *   If splitListing is true, we potentially need to display two lists,
             *   one of what the actor is wearing and one of what the actor is
             *   carrying.
             */
            if(splitListing)
            {
                /* Construct a list of what the actor is wearing */
                local wornList = gActor.contents.subset({o: o.wornBy == gActor });

                /* Construst a list of what the actor is carrying */
                local carriedList = gActor.contents.subset({o: o.wornBy == nil &&
                    o.isFixed == nil});

                /* Note whether we've displayed the worn list */
                local wornListShown = 0;

                /*
                     *   If anything is being worn, get a list of it minus the final
                 *   paragraph break and then display it.
                 */
                if(wornList.length > 0)
                {
                    gActor.myWornLister.show(wornList, 0, nil);

                    /*
                     *   If nothing is being carried, terminate the list with a full
                     *   stop and a paragraph break.
                     */
                    if(carriedList.length == 0)
                        ".<.p>";

                    /*
                     *   Note that the worn list has been shown.
                     */
                    wornListShown = 1;

                }
                /*
                 *   If something's being carried or nothing's being worn, display
                 *   an inventory list of what's being carried. If nothing's being
                 *   worn or carried, this will display the "You are empty-handed"
                 *   message.
                 */
                if(carriedList.length > 0 || wornList.length == 0)
                    gActor.myInventoryLister.show(carriedList, wornListShown);
            }
            else
            {
                gActor.myInventoryLister.show(gActor.contents, 0);
            }

            /* Mark eveything just listed as having been seen. */
            gActor.contents.forEach({x: x.noteSeen()});
        }

        /*
         *   Do we want separate lists of what's worn and what's carried?  By default we do unless we're
         *   doing a tall inventory listing
         */
        splitListing = !libGlobal.inventoryTall
    ;

    DefineIAction(Look)
        execAction(cmd)
        {
            gActor.outermostVisibleParent().lookAroundWithin();
        }

    ;

    DefineIAction(Wait)
        execAction(cmd)
        {
            DMsg(wait, 'Time {dummy} pass{es/ed}. ');
        }

    ;

    DefineIAction(Jump)
        execAction(cmd)
        {
            DMsg(jump, '{I} jump{s/ed} on the spot, fruitlessly. ');
        }

        preCond = (gActor.location && gActor.location.getOutToJump ?
        [actorOutOfNested]: nil)
    ;

    DefineIAction(Yell)
        execAction(cmd)
        {
            DMsg(yell, '{I} shout{s/ed} very loudly. ');
        }
    ;

    DefineIAction(Smell)
        execAction(cmd)
        {
            /*
             *   Build a list of all the objects in scope that both (1) define a
             *   smellDesc property that will display something and (2) whose
             *   isProminentSmell property is true
             */
            local s_list = gActor.getOutermostRoom.allContents.subset(
                {x: Q.canSmell(gActor, x)  &&  x.isProminentSmell});

            /* Include the current room in the list. */
            s_list += gActor.getOutermostRoom;

            s_list = s_list.getUnique();

            /*  Obtain the corresponding list for remote rooms */
            local r_list = getRemoteSmellList().getUnique() - s_list;

            /*
             *   Create a local variable to keep track of whether we've displayed
             *   anything.
             */
            local somethingDisplayed = nil;

            /*
             *   Display the smellDesc of every item in our local smell list,
             *   keeping track of whether anything has actually been displayed as a
             *   result.
             */
            foreach(local cur in s_list)
            {
                if(cur.displayAlt(&smellDesc))
                    somethingDisplayed = true;
            }

            /* Then list any smells from remote locations */
            if(listRemoteSmells(r_list))
                somethingDisplayed = true;

            /*  If nothing has been displayed report that there is nothing to smell */
            if(!somethingDisplayed)
                DMsg(smell nothing intransitive, '{I} {smell} nothing out of the
                    ordinary.<.p>');

        }

        /* Do nothing in the core library; senseRegion.t will override if present */
        getRemoteSmellList() { return []; }

        /* Do nothing in the core library; senseRegion.t will override if present */
        listRemoteSmells(lst) { return nil; }
    ;

    DefineIAction(Listen)
        execAction(cmd)
        {
            /*
             *   I may be able to hear things that aren't technically in scope,
             *   since they may be hidden in containers that allow sound through.
             */
            local s_list = gActor.getOutermostRoom.allContents.subset(
                {x: Q.canHear(gActor,x) && x.isProminentNoise});

            /* Include the current room in the list. */
            s_list += gActor.getOutermostRoom;

            s_list = s_list.getUnique();

            local r_list = getRemoteSoundList().getUnique() - s_list;

            /*
             *   Create a local variable to keep track of whether we've displayed
             *   anything.
             */
            local somethingDisplayed = nil;

            foreach(local cur in s_list)
            {
                if(cur.displayAlt(&listenDesc))
                    somethingDisplayed = true;
            }

            if(listRemoteSounds(r_list))
                somethingDisplayed = true;

            if(!somethingDisplayed)
                DMsg(hear nothing listen, '{I} hear{s/d} nothing out of the
                    ordinary.<.p>');

        }

        /* Do nothing in the core library; senseRegion.t will override if present */
        getRemoteSoundList() { return []; }

        /* Do nothing in the core library; senseRegion.t will override if present */
        listRemoteSounds(lst) { return nil; }
    ;

    DefineIAction(Sleep)
        execAction(cmd)
        {
            DMsg(no sleeping, 'This {dummy} {is} no time for sleeping. ');
        }
    ;

    GoIn: TravelAction
        direction = inDir
        predefinedDirection = true
    ;

    GoOut: TravelAction
        direction = outDir
        predefinedDirection = true

        execAction(cmd)
        {
            if(!gActor.location.ofKind(Room))
            {
                local getOffAction;
                getOffAction = gActor.location.contType == On ? GetOff : GetOutOf;
                replaceAction(getOffAction, gActor.location);
            }
            else
            {
                "<<buildImplicitActionAnnouncement(true)>>";
                doTravel();
            }
        }
    ;

    /*
     *   The GO action is never triggered directly by a player command but can be
     *   used to synthesize a travel action in the direction supplied by the dobj.
     */

    Go: TravelAction
        predefinedDirection = true

        execAction(cmd)
        {
            direction = cmd.dobj;
            inherited(cmd);
        }

        /* Define this so that this action can be called from execNestedAction */
        resolvedObjectsInScope() { return true; }

    ;

    DefineIAction(GetOut)
        execAction(cmd)
        {
            GoOut.execAction(cmd);
        }
    ;

    /*
     *   We'll take STAND to be a request to get out of the actor's immediate
     *   container, unless the actor is directly in a room in which case we'll
     *   simply say that he is standing.
     */

    DefineIAction(Stand)
        execAction(cmd)
        {
            if(!gActor.location.ofKind(Room))
                replaceAction(GetOff, gActor.location);
            else
            {
                DMsg(already standing, '{I} {am} standing. ');
            }

        }
    ;

    DefineIAction(Sit)
        execAction(cmd)
        {
            askForDobj(SitOn);
        }
    ;

    DefineIAction(Lie)
        execAction(cmd)
        {
            askForDobj(LieOn);
        }
    ;

    Travel: TravelAction
        direction = (dirMatch.dir)
    ;

    DefineIAction(VagueTravel)
        execAction(cmd)
        {
            DMsg(vague travel, 'Which way do you want to go? ');
        }
    ;

    DefineIAction(GoBack)
        execAction(cmd)
        {
            local pathBack = nil;

            if(libGlobal.lastLoc == nil)
            {
                DMsg(nowhere back, '{I} {have} nowhere to go back to. ');
                return;
            }

            pathBack = defined(routeFinder) ?
                 routeFinder.findPath(gActor.getOutermostRoom,
                    libGlobal.lastLoc) : nil;

            if(pathBack == nil)
            {
                DMsg(no way back, 'There{dummy}{\'s} no way back. ');
                return;
            }

            if(pathBack.length == 1)
            {
                DMsg(already back there, '{I}{\'m} already there. ');
                return;
            }

            local dir = pathBack[2][1];

            DMsg(going back dir, '(going {1})\n', dir.name);

            gActor.getOutermostRoom.(dir.dirProp).travelVia(gActor);

        }
    ;

    DefineTAction(GoTo)

        /* Add all known items to scope */
        addExtraScopeItems(whichRole?)
        {
           scopeList = scopeList.appendUnique(Q.knownScopeList);
        }

        againRepeatsParse = nil

        reportImplicitActions = nil
    ;

    DefineIAction(Continue)
        execAction(cmd)
        {
            local path;
            path = defined(pcRouteFinder) ? pcRouteFinder.cachedRoute : nil;
            if(path == nil)
            {
                DMsg(no journey, '{I}{\'m} not going anywhere. ');
                return;
            }

            local idx = path.indexWhich({x: x[2] == gActor.getOutermostRoom});

            if(idx == nil)
            {
                path = defined(pcRouteFinder) ?
                    pcRouteFinder.findPath(gActor.getOutermostRoom,
                                           pcRouteFinder.currentDestination) : nil;

                if(path == nil)
                {
                    DMsg(off route, '{I}{\'m} no longer on {my} route. Use the GO TO
                        command to set up a new route. ');
                    return;
                }
                else
                    idx = 1;
            }

            if(idx == path.length)
            {
                say(gActor.getOutermostRoom.alreadyThereMsg);
                return;
            }

            local dir = path[idx + 1][1];

            takeStep(dir, path[path.length][2]);

        }

        takeStep(dir, dest, fastGo?)
        {
            DMsg(going dir, '(going {1})\n', dir.name);

            gActor.getOutermostRoom.(dir.dirProp).travelVia(gActor);

            if(!gActor.isIn(dest) && !fastGo)
                htmlSay(contMsg);

        }

        contMsg =  BMsg(explain continue, 'To continue the journey
                    use the command
                    <<aHref('Continue','CONTINUE','Continue')>> or C. ')

    ;

    DefineSystemAction(Topics)
        execAction(cmd)
        {
            local otherActor = gPlayerChar.currentInterlocutor;

            if(otherActor == nil)
                DMsg(no interlocutor, '{I}{\'m} not talking to anyone. ');
            else
            {
                otherActor.showSuggestions(true);
            }
        }

        afterAction() {}
    ;

    DefineTAction(Examine)
        announceMultiAction = true

        getAll(cmd, role)
        {
            return scopeList.subset({ x: !x.ofKind(Room)});
        }

        againRepeatsParse = nil
    ;

    /*
     *   The ExamineOrGoTo action is used as the default action by the Parser; it is
     *   not an action the player can directly command. If the player enters a room
     *   (and nothing else) on the command line, and the room is known to the player
     *   character, and the player character is not already in the room, the command
     *   will be treated as a GoTo action; otherwise it will be treated as an
     *   Examine action.
     */

    DefineTAction(ExamineOrGoTo)
        exec(cmd)
        {
            if(defined(pcRouteFinder) && cmd.dobj.ofKind(Room)
               && !cmd.actor.isIn(cmd.dobj))
                cmd.action = GoTo;
            else
                cmd.action = Examine;

            gAction = cmd.action;
            gAction.reset();
            gAction.exec(cmd);
        }

        /* For this action to work all known rooms also need to be in scope */
        addExtraScopeItems(whichRole?)
        {
            scopeList = scopeList.appendUnique(Q.knownScopeList.subset({x:
                x.ofKind(Room)}));
        }

    ;

    DefineTAction(Follow)
        againRepeatsParse = nil
    ;

    DefineTAction(Read)
        announceMultiAction = true

        getAll(cmd, role)
        {
            return scopeList.subset({ x: !x.ofKind(Room)});
        }

        againRepeatsParse = nil
    ;

    DefineTAction(SmellSomething)
        announceMultiAction = true
        againRepeatsParse = nil

        /* Add any Odors the actor can smell */
        addExtraScopeItems(whichRole?)
        {
            if(defined(Odor))
            {
                local odorList = gActor.getOutermostRoom.allContents.subset(
                    { o: o.isOdor && Q.canSmell(gActor, o) } );

                scopeList = scopeList.appendUnique(odorList);
            }
        }

    ;

    DefineTAction(ListenTo)
        announceMultiAction = true
        againRepeatsParse = nil

        /* Add any Noises the actor can hear */
        addExtraScopeItems(whichRole?)
        {
            if(defined(Noise))
            {
                local noiseList = gActor.getOutermostRoom.allContents.subset(
                    { n: n.isNoise && Q.canHear(gActor, n) } );

                scopeList = scopeList.appendUnique(noiseList);
            }
        }

    ;

    DefineTAction(Taste)
        announceMultiAction = true
        getAll(cmd, role)
        {
            return scopeList.subset({ x: !x.ofKind(Room)});
        }
        againRepeatsParse = nil
    ;

    DefineTAction(Feel)
        announceMultiAction = true
        getAll(cmd, role)
        {
            return scopeList.subset({ x: !x.ofKind(Room)});
        }
        againRepeatsParse = nil
    ;

    DefineTAction(Take)

        getAll(cmd, role)
        {
            return scopeList.subset({ x: !x.isDirectlyIn(cmd.actor) && !x.isFixed});
        }

        announceMultiAction = nil
        allowAll = true

    ;

    DefineTAction(Drop)
        allowAll = true

        getAll(cmd, role)
        {
            return scopeList.subset({ x: x.isDirectlyIn(cmd.actor) && !x.isFixed});
        }
    ;

    DefineTAction(Throw)
        getAll(cmd, role)
        {
            return scopeList.subset({ x: !x.isFixed});
        }
    ;

    DefineTAction(Attack)
        againRepeatsParse = nil
    ;

    DefineTAction(Strike)
        againRepeatsParse = nil
    ;

    DefineTAction(Open)
    ;

    DefineTAction(Close)
    ;

    DefineTAction(LookIn)
        againRepeatsParse = nil
    ;

    DefineTAction(LookUnder)
        againRepeatsParse = nil
    ;

    DefineTAction(LookBehind)
        againRepeatsParse = nil
    ;

    DefineTAction(LookThrough)
        againRepeatsParse = nil
    ;

    DefineTAction(Unlock)
    ;

    DefineTAction(Lock)
    ;

    DefineTAction(SwitchOn)
    ;

    DefineTAction(SwitchOff)
    ;

    DefineTAction(Turn)
        againRepeatsParse = nil
    ;

    DefineTAction(Wear)
    ;

    DefineTAction(Doff)
        allowAll = true
    ;

    DefineTAction(Break)
        againRepeatsParse = nil
    ;

    DefineTAction(Climb)
    ;

    DefineTAction(ClimbUp)
    ;

    DefineTAction(ClimbDown)
    ;

    DefineIAction(ClimbUpVague)
        execAction(cmd)  { askForDobj(ClimbUp); }
    ;

    DefineIAction(ClimbDownVague)
        execAction(cmd)  { askForDobj(ClimbDown); }
    ;

    DefineTAction(Board)
    ;

    DefineTAction(StandOn)
    ;

    DefineTAction(SitOn)
    ;

    DefineTAction(LieOn)
    ;

    DefineTAction(StandIn)
    ;

    DefineTAction(SitIn)
    ;

    DefineTAction(LieIn)
    ;

    DefineTAction(Enter)
    ;

    DefineTAction(GetOff)
    ;

    DefineTAction(GetOutOf)
    ;

    DefineTAction(GoThrough)
    ;

    DefineTAction(GoAlong)
    ;

    DefineTAction(TravelVia)
    ;

    DefineTAction(Push)
        againRepeatsParse = nil
    ;

    DefineTAction(Pull)
        againRepeatsParse = nil
    ;

    DefineTAction(Search)
        againRepeatsParse = nil
    ;

    DefineTAction(Remove)
        againRepeatsParse = nil
    ;

    DefineTAction(Move)
        againRepeatsParse = nil
    ;

    DefineTAction(Light)
    ;

    DefineTAction(Extinguish)
    ;

    DefineTAction(Eat)
    ;

    DefineTAction(Drink)
    ;

    DefineTAction(Clean)
        againRepeatsParse = nil
    ;

    DefineTAction(Dig)
        againRepeatsParse = nil
    ;

    DefineTAction(Kiss)
        againRepeatsParse = nil
    ;

    DefineTAction(Detach)
        getAll(cmd, role)
        {
            return scopeList.subset({ x: x.attachedTo != nil});
        }
    ;

    DefineTIAction(DigWith)
        resolveIobjFirst = nil
        againRepeatsParse = nil
    ;

    DefineTIAction(CleanWith)
        resolveIobjFirst = nil
        againRepeatsParse = nil
    ;

    DefineTIAction(MoveTo)
        resolveIobjFirst = nil
        getAll(cmd, role)
        {
            return scopeList.subset({ x: x.isMoveable});
        }
        againRepeatsParse = nil
    ;

    DefineTIAction(MoveWith)
        resolveIobjFirst = nil

        getAll(cmd, role)
        {
            return scopeList.subset({ x: x.isMoveable});
        }
        againRepeatsParse = nil
    ;

    DefineTIAction(PutOn)
        announceMultiAction = nil
        allowAll = true
        getAll(cmd, role)
        {
            return putAllScope(curIobj, scopeList);
        }
    ;

    /*
     *   Return a suitable list of direct objects for a PUT ALL PREP XXX command,
     *   where iobj is the indirect object of the command and slist is the full
     *   scopelist for the action.
     *
     *   Ideally we want to return a list of all the objects that can be put in
     *   iobj, namely all the objects in scope that are portable and not already in
     *   iobj, and not the iobj. But if no objects fit the bill we have to fall back
     *   on first, all portable objects in scope and, failing that, all objects in
     *   scope except the room and the actor.
     */

    putAllScope(iobj, slist)
    {
        /* Get a list of all the portable objects in scope. */
        local portables = slist.subset({x: !x.isFixed});

        /* If there are none, return the scope list less the actor and any rooms */
        if(portables.length < 1)
            return slist.subset({x: !x.ofKind(Room) && x != gActor});

        /*
         *   Get a list of suitable objects, i.e. portable objects that are not in
         *   the iobj and are not the iobj.
         */
        local suitables = portables.subset({x: iobj == nil || !x.isOrIsIn(iobj)});

        /* if there's anything in this list, return it */
        if(suitables.length > 0)
            return suitables;

        /* Otherwise return the list of portable objects. */

        return portables;
    }

    DefineTIAction(PutIn)
        announceMultiAction = nil
        allowAll = true

        getAll(cmd, role)
        {
            return putAllScope(curIobj, scopeList);
        }

    ;

    DefineTIAction(PutUnder)
        announceMultiAction = nil
        allowAll = true

        getAll(cmd, role)
        {
            return putAllScope(curIobj, scopeList);
        }
    ;

    DefineTIAction(PutBehind)
        nnounceMultiAction = nil
        allowAll = true

        getAll(cmd, role)
        {
            return putAllScope(curIobj, scopeList);
        }
    ;

    DefineTIAction(UnlockWith)
        resolveIobjFirst = nil
    ;

    DefineTIAction(LockWith)
        resolveIobjFirst = nil
    ;

    DefineTAction(Attach)
    ;

    DefineTIAction(AttachTo)
        resolveIobjFirst = nil
    ;

    DefineTIAction(DetachFrom)
        getAll(cmd, role)
        {
            return scopeList.subset({ x: x.attachedTo == curIobj});
        }
    ;

    DefineTIAction(FastenTo)
        resolveIobjFirst = nil
    ;

    DefineTIAction(TurnWith)
        resolveIobjFirst = nil
        againRepeatsParse = nil
    ;

    DefineTAction(Cut)
    ;

    DefineTIAction(CutWith)
        resolveIobjFirst = nil
        againRepeatsParse = nil
    ;

    DefineTIAction(TakeFrom)
        /*
         *   If the command matched ALL filter out dobjs that aren't in the iobj by
         *   not executing the command for them.
         */

        exec(cmd)
        {
            if(!cmd.matchedAll || cmd.iobj.notionalContents.indexOf(cmd.dobj) != nil)
                inherited(cmd);

            /* Otherwise note the current dobj in any case */
            else
                curDobj = cmd.dobj;
        }

        reportAction()
        {
            if(reportList.length > 0)
                inherited;

            /*
             *   If the player tried to TAKE ALL FRMO IOBJ and there was nothing to
             *   take we need to report this
             */
            else if(gCommand.matchedAll)
                DMsg(nothing to take, 'There{dummy}{\'s} nothing available to
                        take from {1}. ', gCommand.iobj.theName);
        }

        getAll(cmd, role)
        {
            return scopeList.subset({ x: !x.isFixed});
        }

        allowAll = true

    ;

    DefineTIAction(ThrowAt)
        resolveIobjFirst = nil
    ;

    DefineTIAction(ThrowTo)
        resolveIobjFirst = nil
    ;

    DefineTIAction(AttackWith)
        resolveIobjFirst = nil
        againRepeatsParse = nil
    ;

    DefineTAction(ThrowDir)
        execAction(cmd)
        {
            direction = cmd.verbProd.dirMatch.dir;
            inherited(cmd);
        }

        direction = nil
        againRepeatsParse = nil
    ;

    DefineIAction(JumpOffIntransitive)
        execAction(cmd)
        {
            if(gActor.location.contType == On)
                replaceAction(JumpOff, gActor.location);
            else
                DMsg(not on anything, '{I}{\'m} not on anything. ');
        }
    ;

    DefineTAction(JumpOff)
    ;

    DefineTAction(JumpOver)
        againRepeatsParse = nil
    ;

    DefineLiteralTAction(TurnTo)
    ;

    DefineLiteralTAction(SetTo)
    ;

    DefineTAction(Set)
    ;

    DefineTAction(TypeOnVague)
    ;

    DefineLiteralTAction(TypeOn)
        againRepeatsParse = nil

        doActionOnce()
        {
            libGlobal.lastTypedOnObj = curDobj;
            return inherited();
        }
    ;

    DefineLiteralAction(Type)
        againRepeatsParse = nil

        execAction(cmd) { askForIobj(TypeOn); }
    ;

    DefineLiteralTAction(EnterOn)
        againRepeatsParse = nil
    ;

    DefineLiteralTAction(WriteOn)
        againRepeatsParse = nil

        doActionOnce()
        {
            libGlobal.lastWrittenOnObj = curDobj;
            return inherited();
        }
    ;

    DefineLiteralAction(Write)
        againRepeatsParse = nil

        execAction(cmd) { askForIobj(WriteOn); }
    ;

    DefineTopicTAction(ConsultAbout)
        againRepeatsParse = nil
    ;

    DefineTopicAction(ConsultWhatAbout)
        execAction(cmd)
        {
            askForDobj(ConsultAbout);
        }
    ;

    DefineTAction(SwitchVague)
        againRepeatsParse = nil
    ;

    DefineTAction(Flip)
        againRepeatsParse = nil
    ;

    DefineTAction(Fasten)
    ;

    DefineTAction(Burn)
    ;

    DefineTIAction(BurnWith)
        resolveIobjFirst = nil
    ;

    DefineTAction(Pour)
        againRepeatsParse = nil
    ;

    DefineTIAction(PourOnto)
        resolveIobjFirst = nil
        againRepeatsParse = nil
    ;

    DefineTIAction(PourInto)
        resolveIobjFirst = nil
        againRepeatsParse = nil
    ;

    DefineTAction(Screw)
    ;

    DefineTIAction(ScrewWith)
        resolveIobjFirst = nil
    ;

    DefineTAction(Unscrew)
    ;

    DefineTIAction(UnscrewWith)
        resolveIobjFirst = nil
    ;

    DefineTAction(Unfasten)
    ;

    DefineTIAction(UnfastenFrom)
    ;

    DefineTIAction(PlugInto)
        resolveIobjFirst = nil
    ;

    DefineTAction(PlugIn)
    ;

    DefineTIAction(UnplugFrom)
    ;

    DefineTAction(Unplug)
    ;

    DefineTAction(PushTravelDir)

        isPushTravelAction = true

        execAction(cmd)
        {
            local conn;

            /* Note whether travel is allowed. This can be adjusted by the dobj */
            travelAllowed = nil;

            /* Get the direction of travel from the command */
            direction = cmd.verbProd.dirMatch.dir;

            /* Note the actor's location. */
            local loc = gActor.getOutermostRoom;

    //        /* Note whether we meed the lighting conditions to permit travel */
    //        local illum = loc.allowDarkTravel || loc.isIlluminated;

            /*
             *   first find out what our direction might take us to; if it's an object that defines the
             *   PushTravlVia property, change the action to PushTravelVia that connector
             */

        retry:
            /*
             *   See if the direction we're due to go in points to an object and if so process it
             *   accordingly.
             */
            if(loc.propType(direction.dirProp) == TypeObject)
            {
                /* Note the connector object in the relevant direction */
                conn = loc.(direction.dirProp);

                /*
                 *   If this connector is an UnlistedProxy Connector we need to carry out the rest of
                 *   the processing on whatever it's a proxy for.
                 */
                if(conn.ofKind(UnlistedProxyConnector))
                {
                    /* Reset our direction to that of the UnlistedProxyConnector. */
                    direction = conn.direction;

                    /* Start over again with our new direction. */
                    goto retry;
                }

                /*
                 *   If the connector object defines a PushTravelVia action, then replace the current
                 *   action with that PushTravelVia action (e.g. PushTravelGoThrough or
                 *   PushTravelClimbUp).
                 */
                if(conn.PushTravelVia)
                    replaceAction(conn.PushTravelVia, gDobj, conn);

                /*
                 *   Maybe conn looks like an object but is actually an anonymous or dynamic function,
                 *   in which case we can try to execute it.
                 */
                if(dataTypeXlat(conn) == TypeFuncPtr)
                {
                    try
                    {
                        conn();
                    }
                    catch (Exception ex)
                    {
                        "Problem with function object attached to the <<direction.name>> property of
                        <<loc.name>>.<.p>";

                        ex.displayException();
                    }
                }
                else

                /*
                 *   if we reach this point, there must be something fishy going on, since we really
                 *   shouldn't have any other kind of object attached to a direction property, so
                 *   display a message saying so.
                 */
                    "<b>ERROR!</b> Illegal object <<conn>> attached to the <<direction.name>> property
                    of <<loc.name>>. ";

            }
            /*
             *   If our direction isn't attached to an object, it must be to a method or string that's
             *   going to display a message explaining why we can't travel. So call the nonTravel()
             *   function to handle it.
             */
            else
                nonTravel(loc, direction);
        }

        travelAllowed = nil
        direction = nil
        curIobj = nil

        doTravel() { delegated TravelAction(); }
    ;

    DefineTIAction(PushTravelThrough)
        viaMode = Through

        isPushTravelAction = true

        addExtraScopeItems(role)
        {
            /*
             *   If our indirect object is a TravelConnector it may not be a physical object that would
             *   normally be considered in scope, so we need to add it to our scope list.
             */
            if(objOfKind(curIobj, TravelConnector))
                scopeList = scopeList.appendUnique(valToList(curIobj));

            /*
             *   Append the extra scope items defined on this Room to the action's
             *   scope list.
             */
            inherited(role);
        }
    ;

    DefineTIAction(PushTravelEnter)
        viaMode = Into

        isPushTravelAction = true
    ;

    DefineTIAction(PushTravelGetOutOf)
        viaMode = OutOf

        isPushTravelAction = true
    ;

    DefineTIAction(PushTravelClimbUp)
        viaMode = Up

        isPushTravelAction = true
    ;

    DefineTIAction(PushTravelClimbDown)
        viaMode = Down

        isPushTravelAction = true
    ;

    DefineTAction(TalkTo)
        isConversational = true
    ;

    class MiscConvAction: IAction
        execAction(cmd)
        {
            if(gPlayerChar.currentInterlocutor == nil
               || !Q.canTalkTo(gPlayerChar, gPlayerChar.currentInterlocutor))
                sayNotTalking();
            else
            {
                curObj = gPlayerChar.currentInterlocutor;
                gPlayerChar.currentInterlocutor.handleTopic(responseProp,
                    [topicObj]);
            }

        }
        curObj = nil

        getMessageParam(objName)
        {
            switch(objName)
            {
            case 'dobj':
                /* return the current direct object */
                return curObj;

            case 'cobj':
                /* return the current object */
                return curObj;

            default:
                /* inherit default handling */
                return inherited(objName);
            }
        }

        responseProp = nil
        topicObj = nil

        isConversational = true
    ;

    sayNotTalking()
    {
        DMsg(not talking, '{I}{\'m} not talking to anyone. ');
    }

    /*
     *   Singleton object used to trigger a YesTopic; we must make it familiar so
     *   that YesTopics can be listed as suggested topics. We define this as
     *   noTopicObj in actions.t rather than actor.t so that the SayYes and SayNo
     *   actions in actions.t will compile even if actor.t is absent from the build.
     */
    yesTopicObj: object familiar = true;

    /* Singleton object used to trigger a NoTopic */
    noTopicObj: object familiar = true;

    SayYes: MiscConvAction
        baseActionClass = SayYes
        responseProp = &miscTopics
        topicObj = yesTopicObj
    ;

    SayNo: MiscConvAction
        baseActionClass = SayNo
        responseProp = &miscTopics
        topicObj = noTopicObj
    ;

    QueryVague: MiscConvAction
        baseActionClass = QueryVague
        execAction(cmd)
        {
            qType = cmd.verbProd.qType;
            /*
             *   Mark this as a special Topic designed to match a QueryTopic of the appropriate type.
             */
            topicObj = new Topic(qType + '!');

            inherited(cmd);
        }

        qType = nil
        responseProp = &queryTopics
    ;

    Goodbye: IAction
        baseActionClass = Goodbye

        execAction(cmd)
        {
            curObj = gPlayerChar.currentInterlocutor;

            if(gPlayerChar.currentInterlocutor == nil ||
               !Q.canTalkTo(gPlayerChar, gPlayerChar.currentInterlocutor))
                sayNotTalking();
            else if(defined(endConvBye) &&
                gPlayerChar.currentInterlocutor.endConversation(endConvBye));
        }

        curObj = nil

        isConversational = true
    ;

    Hello: IAction
        baseActionClass = Hello

        execAction(cmd)
        {
            /* first build the scope list so we know which actors are in scope */
            buildScopeList();

            /*
             *   if the pc isn't already talking to someone then this is an attempt
             *   to engage a new interlocutor in conversation.
             */
            if(gPlayerChar.currentInterlocutor == nil)
            {
                /*
                 *   Ascertain how many actors other than the player char are in
                 *   scope (and thus potentially greetable.
                 */

                local greetList;

                /*
                 *   We do this a slightly roundabout way to avoid compilation
                 *   errors and warnings when actor.t is omitted from the build.
                 */
                local cls = (defined(Actor) ? Actor : nil);

                if(cls)
                    greetList = scopeList.subset(
                        { x: x.ofKind(cls) && x != gPlayerChar });
                else
                    greetList = [];

                local greetCount = greetList.length;

                /* If there are no other actors in scope, say so. */
                if(greetCount == 0)
                {
                    DMsg(no one here, 'There{dummy}{\'s} no one {here} to talk to.
                        ');
                }
                /*
                 *   Otherwise construct a list of all the actors in scope and greet
                 *   all of them (rather than asking the player to disambiguate -
                 *   after all the pc may have just said 'hello' to a room full of
                 *   people and there's no reason why they shouldn't all respond).
                 */
                else
                {
                    foreach(local greeted in greetList)
                    {
                        curObj = greeted;
                        greeted.sayHello();
                    }
                }
            }
            /*
             *   If the player char is currently talking to someone, say so and
             *   carry out a repeat greeting.
             */
            else
            {
                gPlayerChar.currentInterlocutor.sayHello();
            }
        }

        curObj = nil

        isConversational = true
    ;

    DefineLiteralTAction(TellTo)
        exec(cmd)
        {
            /*
             *   Take a command of the form of TELL FOO TO BAR, turn it into FOO,
             *   BAR and then send it back to parser to execute
             */
            local str = cmd.dobj.name + ', ' + cmd.iobj.name;
            Parser.parse(str);
        }
        afterAction() {}

        isConversational = true
    ;

    DefineTopicTAction(AskAbout)
        isConversational = true
    ;

    DefineTopicTAction(AskFor)
        isConversational = true
    ;

    DefineTopicTAction(TellAbout)
        isConversational = true
    ;

    DefineTopicTAction(TalkAbout)
        isConversational = true
    ;

    DefineTopicTAction(QueryAbout)
        execAction(cmd)
        {
            qType = cmd.verbProd.qtype;

            inherited(cmd);
        }
        qType = nil

        #ifdef __DEBUG
        iqinfo = (gCommand.verbProd.qtype)
        #endif

        isConversational = true
    ;

    DefineTopicTAction(SayTo)
        isConversational = true
    ;

    DefineTIAction(GiveTo)
        /*
         *   The summaryReport can be set by a GiveTopic to a single-quoted string in
         *   BMsg format, with {1} standing in for gActionListStr, in order to
         *   report on a whole set of objects given at once; e.g. '{I} {give} Bob
         *   {1}. '
         */
        summaryReport = nil

        /*
         *   The summaryProp can be a propertyPointer to a method on the Actor being
         *   conversed with that's called at once a whole set of objects has been
         *   given. It will normally be set by a gAction.summaryProp = &prop
         *   statement in a GiveTopic.
         */
        summaryProp = nil

        /*
         *   Reset the summaryReport and the summaryProp to nil for the whole group
         *   of objects this action may act on, so that they're only used if they're
         *   explicitly requested this turn.
         */
        execGroup(cmd)
        {
            summaryReport = nil;
            summaryProp = nil;
        }
    ;

    DefineTIAction(ShowTo)
        showReport = nil
        summaryProp = nil

        /*
         *   Reset the showReport to nil for the whole group of objects this action
         *   may act on.
         */
        execGroup(cmd)
        {
            summaryReport = nil;
            summaryProp = nil;
        }

        isConversational = true
    ;

    ThinkAbout: TopicAction
        baseActionClass = ThinkAbout

        execAction(cmd)
        {
            /*
             *   We don't want this action treated as conversational if it results in the use of reveal
             *   tags, so we store the current interlocutor and then set the current interlocutor to nil
             *   before proceeding.
             */
            local interlocutor = gPlayerChar.currentInterlocutor;

            try
            {

                gPlayerChar.currentInterlocutor = nil;

                if(libGlobal.thoughtManagerObj != nil)
                    libGlobal.thoughtManagerObj.handleTopic(cmd.dobj.topicList);
                else
                    Think.execAction(cmd);
            }
            finally
            {
                /* Restore the current interlocutor. */
                gPlayerChar.currentInterlocutor = interlocutor;
            }
        }
        againRepeatsParse = nil
    ;

    DefineIAction(Think)
        execAction(cmd)
        {
            DMsg(think, '{I} {think}, therefore {i} {am}. ');
        }
    ;

    class ImplicitConversationAction: TopicAction
        execAction(cmd)
        {
            if(cmd.iobj == nil && cmd.dobj != nil)
            {
                if(cmd.dobj.ofKind(ResolvedTopic))
                    topics = cmd.dobj.topicList;
                else
                    topics = cmd.dobj;

                curTopic = cmd.dobj;
            }
            else if (cmd.dobj == nil && cmd.iobj != nil)
            {
                if(cmd.iobj.ofKind(ResolvedTopic))
                    topics = cmd.iobj.topicList;
                else
                    topics = cmd.iobj;

                curTopic = cmd.iobj;
            }

            if(gPlayerChar.currentInterlocutor == nil ||
               !Q.canTalkTo(gPlayerChar, gPlayerChar.currentInterlocutor))
                sayNotTalking();
            else
            {
                notePronounAntecedent(gPlayerChar.currentInterlocutor);
                resolvePronouns();
                curObj = gPlayerChar.currentInterlocutor;
                gPlayerChar.currentInterlocutor.handleTopic(topicListProperty,
                    topics, defaultProperty);
            }
        }

        /* The default property to call on the Actor if there's not matching TopicEntry */
        defaultProperty = &noResponseMsg

        /*
         *   This is a bit of a kludge to deal with the fact that the Parser doesn't
         *   seem able to resolve pronouns within ResolvedTopics. We do it here
         *   instead.
         */

        resolvePronouns()
        {
            local actor = gPlayerChar.currentInterlocutor;
            for(local cur in topics, local i = 1;; ++i)
            {
                if(cur == Him && actor.isHim)
                    topics[i] = actor;

                if(cur == Her && actor.isHer)
                    topics[i] = actor;

                if(cur == It && actor.isIt)
                    topics[i] = actor;

                if(cur == Them && actor.plural)
                    topics[i] = actor;
            }
        }

        topicListProperty = nil
        topics = nil

        isConversational = true
    ;

    AskAboutImplicit: ImplicitConversationAction
        baseActionClass = AskAboutImplicit
        topicListProperty = &askTopics
    ;

    AskForImplicit: ImplicitConversationAction
        baseActionClass = AskForImplicit
        topicListProperty = &askForTopics
    ;

    TellAboutImplicit: ImplicitConversationAction
        baseActionClass = TellAboutImplicit
        topicListProperty = &tellTopics
    ;

    TalkAboutImplicit: ImplicitConversationAction
        baseActionClass = TalkAboutImplicit
        topicListProperty = &talkTopics
    ;

    DefineTAction(ShowToImplicit)
        showReport = nil

        /*
         *   The summaryProp can be a propertyPointer to a method on the Actor being
         *   conversed with that's called at once a whole set of objects has been
         *   given. It will normally be set by a gAction.summaryProp = &prop
         *   statement in a ShowTopic.
         */
        summaryProp = nil

        /*
         *   Reset the showReport to nil for the whole group of objects this action
         *   may act on.
         */
        execGroup(cmd)
        {
            summaryReport = nil;
            summaryProp = nil;
        }
    ;

    DefineTAction(GiveToImplicit)
        showReport = nil

        /*
         *   The summaryProp can be a propertyPointer to a method on the Actor being
         *   conversed with that's called at once a whole set of objects has been
         *   given. It will normally be set by a gAction.summaryProp = &prop
         *   statement in a GiveTopic.
         */
        summaryProp = nil
        /*
         *   Reset the showReport to nil for the whole group of objects this action
         *   may act on.
         */
        execGroup(cmd)
        {
            summaryReport = nil;
            summaryProp = nil;
        }
    ;

    Query: ImplicitConversationAction
        baseActionClass = Query
        execAction(cmd)
        {
            qType = cmd.verbProd.qtype;

            inherited(cmd);
        }
        qType = nil
        topicListProperty = &queryTopics

        #ifdef __DEBUG
        dqinfo = (gCommand.verbProd.qtype)
        #endif
    ;

    SayAction: ImplicitConversationAction
        baseActionClass = SayAction
        topicListProperty = &sayTopics
        defaultProperty = &defaultSayResponse
    ;

    /*
     *   A state object that keeps track of our logging (scripting) status.
     *   This is transient, because logging is controlled through the output
     *   layer in the interpreter, which does not participate in any of the
     *   persistence mechanisms.
     */
    transient scriptStatus: object
        /*
         *   Script file name.  This is nil when logging is not in effect, and
         *   is set to the name of the scripting file when a log file is
         *   active.
         */
        scriptFile = nil

        /* RECORD file name */
        recordFile = nil

        /* have we warned about using NOTE without logging in effect? */
        noteWithoutScriptWarning = nil
    ;

    /*
     *   Property: object is a web temp file.  The Web UI uses this to flag
     *   that a file we're saving to is actually a temp file that will be
     *   offered as a downloadable file to the client after the file is written
     *   and closed.
     */
    property isWebTempFile;

    /*
     *   A base class for file-oriented actions, such as SCRIPT, RECORD, and
     *   REPLAY.  We provide common handling that prompts interactively for a
     *   filename; subclasses must override a few methods and properties to
     *   carry out the specific subclassed operation on the file.
     */
    class FileOpAction: SystemAction
        /* our file dialog prompt message */
        filePromptMsg = ''

        /* the file dialog open/save type */
        fileDisposition = InFileSave

        /* the file dialog type ID */
        fileTypeID = FileTypeLog

        /* show our cancellation mesage */
        showCancelMsg = ""

        /*
         *   Carry out our file operation.
         *
         *   'desc' is an optional named argument giving a description string
         *   entered by the user via the Save Game dialog.  Some versions of
         *   the Save Game dialog let the user enter this additional
         *   information, which can be stored as part of the saved game
         *   metadata.
         */
        performFileOp(fname, ack, desc:?)
        {
            /*
             *   Each concrete action subclass must override this to carry out
             *   our operation.  This is called when the user has successfully
             *   selected a filename for the operation.
             */
        }

        execAction(cmd)
        {
            /*
             *   ask for a file and carry out our action; since the command is
             *   being performed directly from the command line, we want an
             *   acknowledgment message on success
             */
            setUpFileOp(true);
        }

        /* ask for a file, and carry out our operation is we get one */
        setUpFileOp(ack)
        {
            local result;

            /* ask for a file */
            result = getInputFile(filePromptMsg, fileDisposition, fileTypeID, 0);

            /* check the inputFile result */
            switch(result[1])
            {
            case InFileSuccess:
                /* carry out our file operation */
                if (result.length >= 3)
                    performFileOp(result[2], ack, desc:result[3]);
                else
                    performFileOp(result[2], ack);
                break;

            case InFileFailure:
                /* advise of the failure of the prompt */
                if (result.length() > 1)
                    filePromptFailedMsg(result[2]);
                else
                    filePromptFailed();
                break;

            case InFileCancel:
                /* acknowledge the cancellation */
                showCancelMsg();
                break;
            }

        }

        /* we can't include this in undo, as it affects external files */
        includeInUndo = nil

        /* don't allow repeating with AGAIN */
        isRepeatable = nil
    ;

    /*
     *   Turn scripting on.  This creates a text file that contains a
     *   transcript of all commands and responses from this point forward.
     */
    DefineAction(ScriptOn, FileOpAction)
        /* our file dialog parameters - ask for a log file to save */
        filePromptMsg = (BMsg(get scripting prompt, 'Please select a name for the
            new script file'))

        fileTypeID = FileTypeLog
        fileDisposition = InFileSave

        /* show our cancellation mesasge */
        showCancelMsg() { DMsg(scripting canceled, '<.parser>Canceled.<./parser>'); }

        /*
         *   set up scripting - this can be used to set up scripting
         *   programmatically, in the course of carrying out another action
         */
        setUpScripting(ack) { setUpFileOp(ack); }

        /* turn on scripting to the given file */
        performFileOp(fname, ack)
        {
            /* turn on logging */
            local ok = nil, exc = nil;
            try
            {
                ok = aioSetLogFile(fname, LogTypeTranscript);
            }
            catch (Exception e)
            {
                exc = e;
            }
            if (ok)
            {
                /* remember that scripting is in effect */
                scriptStatus.scriptFile = fname;

                /*
                 *   forget any past warning that we've issued about NOTE
                 *   without a script in effect; the next time scripting isn't
                 *   active, we'll want to issue a new warning, since they
                 *   might not be aware at that point that the scripting we're
                 *   starting now has ended
                 */
                scriptStatus.noteWithoutScriptWarning = nil;

                /* note that logging is active, if acknowledgment is desired */
                if (ack)
                {
                    if (fname.isWebTempFile)
                        htmlSay(scriptingOkayWebTemp);
                    else
                        htmlSay(scriptingOkay);

                }
            }
            else
            {
                /* scripting is no longer in effect */
                scriptStatus.scriptFile = nil;

                /* show an error, if acknowledgment is desired */
                if (ack)
                {
                    if (exc != nil)
                        DMsg(scripting failed exception, '<.parser>Failed;
                            <<exc.displayException>><./parser>');

                    else
                        DMsg(scripting failed, '<.parser>Failed; an error occurred
                            opening the script file.<./parser> ');

                }
            }
        }

        scriptingOkayWebTemp = BMsg(scripting okay web temp,
                                    '<.parser>The transcript will be saved.
                                    Type <<aHref('script off', 'SCRIPT OFF',
                                                 'Turn off scripting')>>
                                    to discontinue scripting and download the saved
                                    transcript.<./parser> ')

        scriptingOkay = BMsg(scripting okay, '<.parser>The transcript will
                            be saved to the file. Type <<aHref('script off',
                                'SCRIPT OFF', 'Turn off scripting')>> to
                            discontinue scripting.<./parser> ')
    ;

    /*
     *   Subclass of Script action taking a quoted string as part of the
     *   command syntax.  The grammar rule must set our fname_ property to a
     *   quotedStringPhrase subproduction.
     */
    DefineAction(ScriptString, ScriptOn)
        execAction(cmd)
        {
            /* if there's a filename, we don't need to prompt */
            if (fname_ != nil)
            {
                /* set up scripting to the filename specified in the command */
                performFileOp(fname_.getStringText(), true);
            }
            else
            {
                /* there's no filename, so prompt as usual */
                inherited();
            }
        }
    ;

    /*
     *   Turn scripting off.  This stops recording the game transcript started
     *   with the most recent SCRIPT command.
     */
    DefineSystemAction(ScriptOff)
        execAction(cmd)
        {
            /* turn off scripting */
            turnOffScripting(true);
        }

        /* turn off scripting */
        turnOffScripting(ack)
        {
            /* if we're not in a script file, ignore it */
            if (scriptStatus.scriptFile == nil)
            {
                DMsg(script off ignored, '<.parser>No script is currently being
                            recorded.<./parser>');

                return;
            }

            /* cancel scripting in the interpreter's output layer */
            aioSetLogFile(nil, LogTypeTranscript);

            /* remember that scripting is no longer in effect */
            scriptStatus.scriptFile = nil;

            /* acknowledge the change, if desired */
            if (ack)
                DMsg(script off okay, '<.parser>Scripting ended.<./parser>');

        }

        /* we can't include this in undo, as it affects external files */
        includeInUndo = nil
    ;

    /*
     *   RECORD - this is similar to SCRIPT, but stores a file containing only
     *   the command input, not the output.
     */
    DefineAction(Record, FileOpAction)
        /* our file dialog parameters - ask for a log file to save */
        filePromptMsg = (BMsg(get recording prompt, 'Please select a name for the
            new command log file'))

        fileTypeID = FileTypeCmd
        fileDisposition = InFileSave

        /* show our cancellation mesasge */
        showCancelMsg() { DMsg(recording canceled, '<.parser>Canceled.<./parser> '); }

        /*
         *   set up recording - this can be used to set up scripting
         *   programmatically, in the course of carrying out another action
         */
        setUpRecording(ack) { setUpFileOp(ack); }

        /* turn on recording to the given file */
        performFileOp(fname, ack)
        {
            /* turn on command logging */
            local ok = nil, exc = nil;
            try
            {
                ok = aioSetLogFile(fname, logFileType);
            }
            catch (Exception e)
            {
                exc = e;
            }
            if (ok)
            {
                /* remember that recording is in effect */
                scriptStatus.recordFile = fname;

                /* note that logging is active, if acknowledgment is desired */
                if (ack)
                     htmlSay(BMsg(recording okay,
                                  '<.parser>Commands will now be recorded.  Type
                         <<aHref('record off', 'RECORD OFF',
                                 'Turn off recording')>>
                                  to stop recording commands.<./parser> '));

            }
            else
            {
                /* recording failed */
                scriptStatus.recordFile = nil;

                /* show an error if acknowledgment is desired */
                if (ack)
                {
                    if (exc != nil)
                        DMsg(recording failed exception, '<.parser>Failed;
                            <<exc.displayException()>><./parser>');

                    else
                        DMsg(recording failed, '<.parser>Failed; an error occurred
                            opening the command recording file.<./parser>');
                }
            }
        }

        /* the log file type - by default, we open a regular command log */
        logFileType = LogTypeCommand
    ;

    /* subclass of Record action that sets up an event script recording */
    DefineAction(RecordEvents, Record)
        logFileType = LogTypeScript
    ;

    /* subclass of Record action taking a quoted string for the filename */
    DefineAction(RecordString, Record)
        execAction(cmd)
        {
            /* set up scripting to the filename specified in the command */
            performFileOp(fname_.getStringText(), true);
        }
    ;

    /* subclass of RecordString action that sets up an event script recording */
    DefineAction(RecordEventsString, RecordString)
        logFileType = LogTypeScript
    ;

    /*
     *   Turn command recording off.  This stops recording the command log
     *   started with the most recent RECORD command.
     */
    DefineSystemAction(RecordOff)
        execAction(cmd)
        {
            /* turn off recording */
            turnOffRecording(true);
        }

        /* turn off recording */
        turnOffRecording(ack)
        {
            /* if we're not recording anything, ignore it */
            if (scriptStatus.recordFile == nil)
            {
                DMsg(record off ignored, '<.parser>No command recording is currently
                    being made.<./parser> ');

                return;
            }

            /* cancel recording in the interpreter's output layer */
            aioSetLogFile(nil, LogTypeCommand);

            /* remember that recording is no longer in effect */
            scriptStatus.recordFile = nil;

            /* acknowledge the change, if desired */
            if (ack)
                DMsg(record off okay, '<.parser>Command recording ended.<./parser> ');
        }

        /* we can't include this in undo, as it affects external files */
        includeInUndo = nil
    ;

    /*
     *   REPLAY - play back a command log previously recorded.
     */
    DefineAction(Replay, FileOpAction)
        /* our file dialog parameters - ask for a log file to save */
        filePromptMsg = (BMsg(get replay prompt, 'Please select the command log file
            to replay'))

        fileTypeID = FileTypeCmd
        fileDisposition = InFileOpen

        /* show our cancellation mesasge */
        showCancelMsg() { DMsg(replay canceled, '<.parser>Canceled.<./parser> '); }

        /* script flags passed to setScriptFile */
        scriptOptionFlags = 0

        /* replay the given file */
        performFileOp(fname, ack)
        {
            /*
             *   Note that we're reading from the script file if desired.  Do
             *   this before opening the script, so that we display the
             *   acknowledgment even if we're in 'quiet' mode.
             */
            if (ack)
                inputScriptOkay(
                    fname.ofKind(TemporaryFile) ? fname.getFilename() : fname);

            /* activate the script file */
            local ok = nil, exc = nil;
            try
            {
                ok = setScriptFile(fname, scriptOptionFlags);
            }
            catch (Exception e)
            {
                exc = e;
            }
            if (!ok)
            {
                if (exc != nil)
                    DMsg(input script failed exception, '<.parser>Failed;
                        <<exc.displayException>><./parser>');
                else
                    DMsg(input script failed, '<.parser>Failed; the script input
                        file could not be opened.<./parser>');

            }
        }

        /* acknowledge starting an input script */
        inputScriptOkay(fname)
        {
            DMsg(input script okay, '<.parser>Reading commands from <q><<
              File.getRootName(fname).htmlify()>></q>...<./parser>\n ');
        }

    ;

    /* subclass of Replay action taking a quoted string for the filename */
    DefineAction(ReplayString, Replay)
        execAction(cmd)
        {
            /*
             *   if there's a string, use the string as the filename;
             *   otherwise, inherit the default handling to ask for a filename
             */
            if (fname_ != nil)
            {
                /* set up scripting to the filename specified in the command */
                performFileOp(fname_.getStringText(), true);
            }
            else
            {
                /* inherit the default handling to ask for a filename */
                inherited();
            }
        }
    ;

    /* ------------------------------------------------------------------------ */
    /*
     *   Special "save" action.  This command saves the current game state to
     *   an external file for later restoration.
     */
    DefineAction(Save, FileOpAction)
        /* the file dialog prompt */
        filePromptMsg = (BMsg(get save prompt, 'Save game to file'))

        /* we're asking for a file to save, or type t3-save */
        fileDisposition = InFileSave
        fileTypeID = FileTypeT3Save

        /* cancel message */
        showCancelMsg() { DMsg(save cancelled, '<.parser>Canceled.<./parser> '); }

        /* perform a save */
        performFileOp(fname, ack, desc:?)
        {
            /* before saving the game, notify all PreSaveObject instances */
            PreSaveObject.classExec();

            /*
             *   Save the game to the given file.  If an error occurs, the
             *   save routine will throw a runtime error.
             */
            try
            {
                /* try saving the game */
                saveGame(fname, gameMain.getSaveDesc(desc));
            }
            catch (StorageServerError sse)
            {
                /* the save failed due to a storage server problem - explain */
                DMsg(save failed on server, '<.parser>Failed, because of a problem
                    accessing the storage server:
                    <<makeSentence(sse.errMsg)>><./parser>');

                /* done */
                return;
            }
            catch (RuntimeError err)
            {
                /* the save failed - mention the problem */
                DMsg(save failed, '<.parser>Failed; your computer might be running
                    low on disk space, or you might not have the necessary
                    permissions to write this file.<./parser>');

                /* done */
                return;
            }

            /* note the successful save */
            DMsg(save okay, '<.parser>Saved.<./parser> ');

        }

        /*
         *   Saving has no effect on game state, so it's irrelevant whether or
         *   not it's undoable; but it might be confusing to say we undid a
         *   "save" command, because the player might think we deleted the
         *   saved file.  To avoid such confusion, do not include "save"
         *   commands in the undo log.
         */
        includeInUndo = nil

        /*
         *   Don't allow this to be repeated with AGAIN.  There's no point in
         *   repeating a SAVE immediately, as nothing will have changed in the
         *   game state to warrant saving again.
         */
        isRepeatable = nil
    ;

    /*
     *   Subclass of Save action that takes a literal string as part of the
     *   command.  The filename must be a literal enclosed in quotes, and the
     *   string (with the quotes) must be stored in our fname_ property by
     *   assignment of a quotedStringPhrase production in the grammar rule.
     */
    DefineAction(SaveString, Save)
        execAction(cmd)
        {
            /*
             *   Perform the save, using the filename given in our fname_
             *   parameter, trimmed of quotes.
             */
            performFileOp(fname_.getStringText(), true);
        }
    ;

    DefineSystemAction(Restore)
        execAction(cmd)
        {
            /* ask for a file and restore it */
            askAndRestore();

            /*
             *   regardless of what happened, abandon any additional commands
             *   on the same command line
             */
            throw new TerminateCommandException();
        }

        /*
         *   Ask for a file and try to restore it.  Returns true on success,
         *   nil on failure.  (Failure could indicate that the user chose to
         *   cancel out of the file selector, that we couldn't find the file to
         *   restore, or that the file isn't a valid saved state file.  In any
         *   case, we show an appropriate message on failure.)
         */
        askAndRestore()
        {
            local succ;
            local result;

            /* presume failure */
            succ = nil;

            /* ask for a file */
            result = getInputFile(BMsg(get restore prompt, 'Restore game from file'),
                                  InFileOpen, FileTypeT3Save, 0);

            /* check the inputFile response */
            switch(result[1])
            {
            case InFileSuccess:
                /*
                 *   try restoring the file; use code 2 to indicate that the
                 *   restoration was performed by an explicit RESTORE command
                 */
                if (performRestore(result[2], 2))
                {
                    /* note that we succeeded */
                    succ = true;
                }

                /* done */
                break;

            case InFileFailure:
                /* advise of the failure of the prompt */
                if (result.length() > 1)
                    filePromptFailedMsg(result[2]);
                else
                    filePromptFailed();
                break;

            case InFileCancel:
                /* acknowledge the cancellation */
                DMsg(restore canceled, '<.parser>Canceled.<./parser> ');
                break;
            }

            /*
             *   If we were successful, clear out the AGAIN memory.  This
             *   avoids any confusion about whether we're repeating the RESTORE
             *   command itself, the command just before RESTORE from the
             *   current session, or the last command before SAVE from the
             *   restored game.
             */
            if (succ)
                Again.clearForAgain();

            /* return the success/failure indication */
            return succ;
        }

        /*
         *   Restore a game on startup.  This can be called from mainRestore()
         *   to restore a saved game directly as part of loading the game.
         *   (Most interpreters provide a way of starting the interpreter
         *   directly with a saved game to be restored, skipping the
         *   intermediate step of running the game and using a RESTORE
         *   command.)
         *
         *   Returns true on success, nil on failure.  On failure, the caller
         *   should simply exit the program.  On success, the caller should
         *   start the game running, usually using runGame(), after showing any
         *   desired introductory messages.
         */
        startupRestore(fname)
        {
            /*
             *   try restoring the game, using code 1 to indicate that this is
             *   a direct startup restore
             */
            if (performRestore(fname, 1))
            {
                /* success - tell the caller to proceed with the restored game */
                return true;
            }
            else
            {
                /*
                 *   Failure.  We've described the problem, so ask the user
                 *   what they want to do about it.
                 */
                try
                {
                    /* show options and read the response */
                    failedRestoreOptions();

                    /* if we get here, proceed with the game */
                    return true;
                }
                catch (QuittingException qe)
                {
                    /* quitting - tell the caller to terminate */
                    return nil;
                }
            }
        }

        /*
         *   Restore a file.  'code' is the restoreCode value for the
         *   PostRestoreObject notifications.  Returns true on success, nil on
         *   failure.
         */
        performRestore(fname, code)
        {
            try
            {
                /* restore the file */
                restoreGame(fname);
            }
            catch (StorageServerError sse)
            {
                /* failed due to a storage server error - explain the problem */
                DMsg(restore failed on server,'<.parser>Failed, because of a problem
                    accessing the storage server:
                    <<makeSentence(sse.errMsg)>><./parser>');

                /* indicate failure */
                return nil;
            }
            catch (RuntimeError err)
            {
                /* failed - check the error to see what went wrong */
                switch(err.errno_)
                {
                case 1201:
                    /* not a saved state file */
                    DMsg(restore invalid file, '<.parser>Failed: this is not a valid
                        saved position file.<./parser> ');
                    break;

                case 1202:
                    /* saved by different game or different version */
                    DMsg(restore invalid match, '<.parser>Failed: the file was not
                        saved by this story (or was saved by an incompatible version
                        of the story).<./parser> ');
                    break;

                case 1207:
                    /* corrupted saved state file */
                    DMsg(restore corrupted file, '<.parser>Failed: this saved state
                        file appears to be corrupted.  This can occur if the file
                        was modified by another program, or the file was copied
                        between computers in a non-binary transfer mode, or the
                        physical media storing the file were damaged.<./parser> ');
                    break;

                default:
                    /* some other failure */
                    DMsg(restore failed, '<.parser>Failed: the position could not be
                        restored.<./parser>');
                    break;
                }

                /* indicate failure */
                return nil;
            }

            /* note that we've successfully restored the game */
            DMsg(restore okay, '<.parser>Restored.<./parser> ');

            /* set the appropriate restore-action code */
            PostRestoreObject.restoreCode = code;

            /* notify all PostRestoreObject instances */
            PostRestoreObject.classExec();

            /*
             *   look around, to refresh the player's memory of the state the
             *   game was in when saved
             */
            "\b";
            libGlobal.playerChar.outermostVisibleParent().lookAroundWithin();

            /* indicate success */
            return true;
        }

        /*
         *   There's no point in including this in undo.  If the command
         *   succeeds, it's not undoable itself, and there won't be any undo
         *   information in the newly restored state.  If the command fails, it
         *   won't make any changes to the game state, so there won't be
         *   anything to undo.
         */
        includeInUndo = nil

        /* error showing the input file dialog (or character-mode equivalent) */
        filePromptFailed()
        {
            DMsg(file prompt failed, '<.parser>A system error occurred asking for a
                filename. Your computer might be running low on memory, or might
                have a configuration problem.<./parser> ');
        }

        /* error showing the input file dialog, with a system error message */
        filePromptFailedMsg(msg)
        {
            DMsg(file prompt failed msg, '<.parser>Failed:
                <<makeSentence(msg)>><./parser> ');
        }
    ;

    /*
     *   Subclass of Restore action that takes a literal string as part of the
     *   command.  The filename must be a literal enclosed in quotes, and the
     *   string (with the quotes) must be stored in our fname_ property by
     *   assignment of a quotedStringPhrase production in the grammar rule.
     */
    DefineAction(RestoreString, Restore)
        execAction(cmd)
        {
            /*
             *   Perform the restore, using the filename given in our fname_
             *   parameter, trimmed of quotes.  Use code 2, the same as any
             *   other explicit RESTORE command.
             */
            performRestore(fname_.getStringText(), 2);

            /* abandon any additional commands on the same command line */
            throw new TerminateCommandException();
        }
    ;

    DefineSystemAction(Again)

        exec(cmd)
        {
            if((gameMain.againRepeatsParse && libGlobal.lastCommandForAgain is in
               ('',nil)) || (!gameMain.againRepeatsParse && libGlobal.lastCommand is
               in ('', nil)))
            {
                DMsg(no repeat, 'Sorry, there is no action available to repeat. ');
            }
            else if (gameMain.againRepeatsParse)
            {
                Parser.parse(libGlobal.lastCommandForAgain);
            }
            else
            {
                libGlobal.lastCommand.exec();
            }
        }

        clearForAgain()
        {
            libGlobal.lastAction = nil;
            libGlobal.lastCommand = nil;
        }

    ;

    /* Dummy action to provide an action context. */

    DefineTIAction(DoNothing)
        curDobj = gPlayerChar
        curIobj = gPlayerChar.location
        curObj = curDobj
        grammarTemplates = ['do nothing']
    ;

Adv3Lite Library Reference Manual
Generated on 25/04/2024 from adv3Lite version 2.0