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path: root/src/net/manaserv/attributes.cpp
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/*
 *  The ManaPlus Client
 *  Copyright (C) 2010  The Mana Developers
 *  Copyright (C) 2011-2012  The ManaPlus Developers
 *
 *  This file is part of The ManaPlus Client.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "net/manaserv/attributes.h"

#include "logger.h"
#include "playerinfo.h"

#include "gui/statuswindow.h"

#include "resources/itemdb.h"

#include "utils/gettext.h"
#include "utils/stringutils.h"
#include "utils/xml.h"

#include <list>
#include <map>

#define DEFAULT_ATTRIBUTESDB_FILE "attributes.xml"
#define DEFAULT_POINTS 60
#define DEFAULT_MIN_PTS 1
#define DEFAULT_MAX_PTS 20

namespace ManaServ
{
namespace Attributes
{
    typedef struct
    {
        unsigned int id;
        std::string name;
        std::string description;
        /** Whether the attribute value can be modified by the player */
        bool modifiable;
        /**< Attribute scope. */
        std::string scope;
        /** The playerInfo core Id the attribute is linked with or -1 if not */
        int playerInfoId;
    } Attribute;

    /** Map for attributes. */
    typedef std::map<unsigned int, Attribute> AttributeMap;
    static AttributeMap attributes;

    /** tags = effects on attributes. */
    typedef std::map< std::string, std::string > TagMap;
    static TagMap tags;

    /** List of modifiable attribute names used at character's creation. */
    static StringVect attributeLabels;

    /** Characters creation points. */
    static unsigned int creationPoints = 0;
    static unsigned int attributeMinimum = 0;
    static unsigned int attributeMaximum = 0;

    unsigned int getCreationPoints()
    { return creationPoints; }

    unsigned int getAttributeMinimum()
    { return attributeMinimum; }

    unsigned int getAttributeMaximum()
    { return attributeMaximum; }

    StringVect& getLabels()
    { return attributeLabels; }

    /**
     * Fills the list of base attribute labels.
     */
    static void fillLabels()
    {
        // Fill up the modifiable attribute label list.
        attributeLabels.clear();
        AttributeMap::const_iterator it, it_end;
        for (it = attributes.begin(), it_end = attributes.end();
             it != it_end; ++it)
        {
            if (it->second.modifiable && (it->second.scope == "character"
                || it->second.scope == "being"))
            {
                attributeLabels.push_back(it->second.name + ":");
            }
        }
    }

    /**
     * Fills the list of base attribute labels.
     */
    static int getPlayerInfoIdFromAttrType(std::string attrType)
    {
        toLower(attrType);
        if (attrType == "level")
            return ::LEVEL;
        else if (attrType == "hp")
            return ::HP;
        else if (attrType == "max-hp")
            return ::MAX_HP;
        else if (attrType == "mp")
            return ::MP;
        else if (attrType == "max-mp")
            return ::MAX_MP;
        else if (attrType == "exp")
            return ::EXP;
        else if (attrType == "exp-needed")
            return ::EXP_NEEDED;
        else if (attrType == "money")
            return ::MONEY;
        else if (attrType == "total-weight")
            return ::TOTAL_WEIGHT;
        else if (attrType == "max-weight")
            return ::MAX_WEIGHT;
        else if (attrType == "skill-points")
            return ::SKILL_POINTS;
        else if (attrType == "char-points")
            return ::CHAR_POINTS;
        else if (attrType == "corr-points")
            return ::CORR_POINTS;
        else if (attrType == "none")
            return -2; // Used to hide the attribute display.

        return -1; // Not linked to a playerinfo stat.
    }

    int getPlayerInfoIdFromAttrId(int attrId)
    {
        AttributeMap::const_iterator it = attributes.find(attrId);

        if (it != attributes.end())
            return it->second.playerInfoId;

        return -1;
    }

    static void loadBuiltins()
    {
        {
            Attribute a;
            a.id = 16;
            a.name = _("Strength");
            a.description = "";
            a.modifiable = true;
            a.scope = "character";
            a.playerInfoId = -1;

            attributes[a.id] = a;
            tags.insert(std::make_pair("str", _("Strength %+.1f")));
        }

        {
            Attribute a;
            a.id = 17;
            a.name = _("Agility");
            a.description = "";
            a.modifiable = true;
            a.scope = "character";
            a.playerInfoId = -1;

            attributes[a.id] = a;
            tags.insert(std::make_pair("agi", _("Agility %+.1f")));
        }

        {
            Attribute a;
            a.id = 18;
            a.name = _("Dexterity");
            a.description = "";
            a.modifiable = true;
            a.scope = "character";
            a.playerInfoId = -1;

            attributes[a.id] = a;
            tags.insert(std::make_pair("dex", _("Dexterity %+.1f")));
        }

        {
            Attribute a;
            a.id = 19;
            a.name = _("Vitality");
            a.description = "";
            a.modifiable = true;
            a.scope = "character";
            a.playerInfoId = -1;

            attributes[a.id] = a;
            tags.insert(std::make_pair("vit", _("Vitality %+.1f")));
        }

        {
            Attribute a;
            a.id = 20;
            a.name = _("Intelligence");
            a.description = "";
            a.modifiable = true;
            a.scope = "character";
            a.playerInfoId = -1;

            attributes[a.id] = a;
            tags.insert(std::make_pair("int", _("Intelligence %+.1f")));
        }

        {
            Attribute a;
            a.id = 21;
            a.name = _("Willpower");
            a.description = "";
            a.modifiable = true;
            a.scope = "character";
            a.playerInfoId = -1;

            attributes[a.id] = a;
            tags.insert(std::make_pair("wil", _("Willpower %+.1f")));
        }
    }

    void load()
    {
        logger->log("Initializing attributes database...");

        XML::Document doc(DEFAULT_ATTRIBUTESDB_FILE);
        XmlNodePtr rootNode = doc.rootNode();

        if (!rootNode || !xmlNameEqual(rootNode, "attributes"))
        {
            logger->log("Attributes: Error while loading "
                        DEFAULT_ATTRIBUTESDB_FILE ". Using Built-ins.");
            loadBuiltins();
            fillLabels();
            return;
        }

        for_each_xml_child_node(node, rootNode)
        {
            if (xmlNameEqual(node, "attribute"))
            {
                int id = XML::getProperty(node, "id", 0);

                if (!id)
                {
                    logger->log("Attributes: Invalid or missing stat ID in "
                                DEFAULT_ATTRIBUTESDB_FILE "!");
                    continue;
                }
                else if (attributes.find(id) != attributes.end())
                {
                    logger->log("Attributes: Redefinition of stat ID %d", id);
                }

                std::string name = XML::getProperty(node, "name", "");

                if (name.empty())
                {
                    logger->log("Attributes: Invalid or missing stat name in "
                                DEFAULT_ATTRIBUTESDB_FILE "!");
                    continue;
                }

                // Create the attribute.
                Attribute a;
                a.id = id;
                a.name = name;
                a.description = XML::getProperty(node, "desc", "");
                a.modifiable = XML::getBoolProperty(node, "modifiable", false);
                a.scope = XML::getProperty(node, "scope", "none");
                a.playerInfoId = getPlayerInfoIdFromAttrType(
                                 XML::getProperty(node, "player-info", ""));

                attributes[id] = a;

                unsigned int count = 0;
                for_each_xml_child_node(effectNode, node)
                {
                    if (!xmlNameEqual(effectNode, "modifier"))
                         continue;
                    ++count;
                    std::string tag = XML::getProperty(effectNode, "tag", "");
                    if (tag.empty())
                    {
                        if (name.empty())
                        {
                            logger->log("Attribute modifier in attribute"
                                " %u:%s: Empty name definition "
                                "on empty tag definition, skipping.",
                                a.id, a.name.c_str());
                            --count;
                            continue;
                        }
                        tag = name.substr(0, name.size() > 3
                                          ? 3 : name.size());
                        tag = toLower(tag) + toString(count);
                    }

                    std::string effect = XML::getProperty(
                        effectNode, "effect", "");

                    if (effect.empty())
                    {
                        if (name.empty())
                        {
                            logger->log("Attribute modifier in attribute"
                                " %u:%s: Empty name definition "
                                "on empty effect definition, skipping.",
                                a.id, a.name.c_str());
                            --count;
                            continue;
                        }
                        else
                        {
                            effect = name + " %+f";
                        }
                    }
                    tags.insert(std::make_pair(tag, effect));
                }
                logger->log("Found %d tags for attribute %d.", count, id);

            }// End attribute
            else if (xmlNameEqual(node, "points"))
            {
                creationPoints = XML::getProperty(
                    node, "start", DEFAULT_POINTS);
                attributeMinimum = XML::getProperty(
                    node, "minimum", DEFAULT_MIN_PTS);
                attributeMaximum = XML::getProperty(
                    node, "maximum", DEFAULT_MAX_PTS);
                logger->log("Loaded points: start: %i, min: %i, max: %i.",
                    creationPoints, attributeMinimum, attributeMaximum);
            }
            else
            {
                continue;
            }
        }
        logger->log("Found %d tags for %d attributes.",
            static_cast<int>(tags.size()),
            static_casr<int>(attributes.size()));

        fillLabels();

        // Sanity checks on starting points
        float modifiableAttributeCount = (float) attributeLabels.size();
        float averageValue = 1;
        if (modifiableAttributeCount)
            averageValue = ((float) creationPoints) / modifiableAttributeCount;

        if (averageValue > attributeMaximum || averageValue < attributeMinimum
            || creationPoints < 1)
        {
            logger->log("Attributes: Character's point values make "
                        "the character's creation impossible. "
                        "Switch back to defaults.");
            creationPoints = DEFAULT_POINTS;
            attributeMinimum = DEFAULT_MIN_PTS;
            attributeMaximum = DEFAULT_MAX_PTS;
        }
    }

    void unload()
    {
        attributes.clear();
    }

    void informItemDB()
    {
        std::vector<ItemDB::Stat> dbStats;

        TagMap::const_iterator it, it_end;
        for (it = tags.begin(), it_end = tags.end(); it != it_end; ++it)
            dbStats.push_back(ItemDB::Stat(it->first, it->second));

        ItemDB::setStatsList(dbStats);
    }

    void informStatusWindow()
    {
        if (!statusWindow)
            return;

        AttributeMap::const_iterator it, it_end;
        for (it = attributes.begin(), it_end = attributes.end();
             it != it_end; ++it)
        {
            if (it->second.playerInfoId == -1
                && (it->second.scope == "character"
                || it->second.scope == "being"))
            {
                statusWindow->addAttribute(it->second.id, it->second.name,
                    it->second.modifiable, it->second.description);
            }
        }
    }

} // namespace Attributes
} // namespace ManaServ