Toggle Page (MV)

/*:
 * Toggle Page by Shaz
 * Ver 1.00 2018.01.14
 * Shaz_TogglePage.js
 *
 *
 * @plugindesc Disables/enables event pages on the current map.
 * @author Shaz
 *
 * @help This plugin allows you to temporarily disable a page on an event on
 * the current map, and to re-enable it again.  You can affect the current
 * page on the current event, a specific page on the current event, or a
 * specific page on another event on the current map.
 *
 * Like the Erase Event command, this lasts only until you leave the map.
 * When you return, all pages will be enabled.
 *
 * Plugin Commands:
 * TogglePage                - toggles the current page of the current event
 * TogglePage pageId         - toggles the specified page of the current event
 * TogglePage eventId pageId - toggles the specified page of the specified event
 *
 * Example:
 * TogglePage enables/disables the current page
 * TogglePage 5 enables/disables page 5 on the current event
 * TogglePage 10 3 enables/disables page 3 of event 10 on the current map
 * TogglePage $gameVariables(1) $gameVariables(2) enables/disables the page
 *            number contained in variable 2, of the event whose id is in
 *            variable 1
 *
 *
 * NOTE:
 * pageId refers to the event tab as seen in the editor.  The first event page
 * is pageId 1.
 *
 * eventId and pageId can be formulae, but there must be no spaces.
 *
 * This plugin OVERWRITES the Game_Event.findProperPageIndex function.  There
 * may be compatibility issues with other plugins that also overwrite the same
 * function.
 *
 */

var Imported = Imported || {};
Imported.Shaz_TogglePage = true;

var Shaz = Shaz || {};
Shaz.TP = Shaz.TP || {};
Shaz.TP.Version = 1.00;

(function() {
    var _Shaz_TP_Game_Event_initialize = Game_Event.prototype.initialize;
    Game_Event.prototype.initialize = function(mapId, eventId) {
        this._activePages = Array($dataMap.events[eventId].pages.length);
        for (var i = 0; i < this._activePages.length; i++) {
            this._activePages[i] = true;
        }
        _Shaz_TP_Game_Event_initialize.call(this, mapId, eventId);
    };

    Game_Event.prototype.findProperPageIndex = function() {
        var pages = this.event().pages;
        for (var i = pages.length - 1; i >= 0; i--) {
            var page = pages[i];
            if (this._activePages[i] && this.meetsConditions(page)) {
                return i;
            }
        }
        return -1;
    };

    Game_Event.prototype.togglePage = function(id) {
        id = id ? id - 1 : this._pageIndex;
        if (id >= 0 && id < this._activePages.length) {
            this._activePages[id] = !(this._activePages[id]);
            this.refresh();
        }
    }

    var _Shaz_TP_Game_Interpreter_pluginCommand = Game_Interpreter.prototype.pluginCommand;
    Game_Interpreter.prototype.pluginCommand = function(command, args) {
        switch(command.toUpperCase()) {
            case 'TOGGLEPAGE':
                for (var i = 0; i < args.length; i++) {
                    args[i] = eval(args[i]);
                }
                switch(args.length) {
                    case 0:
                        $gameMap.event(this._eventId).togglePage();
                        break;
                    case 1:
                        $gameMap.event(this._eventId).togglePage(args[0]);
                        break;
                    case 2:
                        $gameMap.event(args[0]).togglePage(args[1]);
                        break;
                }
                break;
            default:
                _Shaz_TP_Game_Interpreter_pluginCommand.call(this, command, args);
        }
    };

})();