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////////////////////////////////////////////////////////////////////////
// OpenTibia - an opensource roleplaying game
////////////////////////////////////////////////////////////////////////
// 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 3 of the License, or
// (at your option) 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 "otpch.h"

#include "creature.h"
#include "player.h"
#include "npc.h"
#include "monster.h"

#include "condition.h"
#include "combat.h"

#include "container.h"
#if defined __EXCEPTION_TRACER__
#include "exception.h"
#endif

#include "configmanager.h"
#include "game.h"

boost::recursive_mutex AutoId::lock;
uint32_t AutoId::count = 1000;
AutoId::List AutoId::list;

double Creature::speedA = 857.36;
double Creature::speedB = 261.29;
double Creature::speedC = -4795.01;

extern Game g_game;
extern ConfigManager g_config;
extern CreatureEvents* g_creatureEvents;

Creature::Creature()
{
    id = 0;
    _tile = NULL;
    direction = SOUTH;
    master = NULL;
    lootDrop = LOOT_DROP_FULL;
    skillLoss = true;
    hideName = hideHealth = cannotMove = false;
    speakType = MSG_NONE;
    skull = SKULL_NONE;
    partyShield = SHIELD_NONE;
    guildEmblem = EMBLEM_NONE;

    health = 1000;
    healthMax = 1000;
    mana = 0;
    manaMax = 0;

    lastStep = 0;
    lastStepCost = 1;
    baseSpeed = 220;
    varSpeed = 0;

    masterRadius = -1;
    masterPosition = Position();

    followCreature = NULL;
    hasFollowPath = false;
    removed = false;
    eventWalk = 0;
    cancelNextWalk = false;
    forceUpdateFollowPath = false;
    isMapLoaded = false;
    isUpdatingPath = false;
    checked = false;
    memset(localMapCache, false, sizeof(localMapCache));

    attackedCreature = NULL;
    lastHitCreature = 0;
    lastDamageSource = COMBAT_NONE;
    blockCount = 0;
    blockTicks = 0;
    walkUpdateTicks = 0;
    checkVector = -1;
    lastFailedFollow = 0;

    onIdleStatus();
}

Creature::~Creature()
{
    attackedCreature = NULL;
    removeConditions(CONDITIONEND_CLEANUP, false);
    for(std::list<Creature*>::iterator cit = summons.begin(); cit != summons.end(); ++cit)
    {
        (*cit)->setAttackedCreature(NULL);
        (*cit)->setMaster(NULL);
        (*cit)->unRef();
    }

    summons.clear();
    conditions.clear();
    eventsList.clear();
}

bool Creature::canSee(const Position& myPos, const Position& pos, uint32_t viewRangeX, uint32_t viewRangeY)
{
    if(myPos.z <= 7)
    {
        //we are on ground level or above (7 -> 0)
        //view is from 7 -> 0
        if(pos.z > 7)
            return false;
    }
    else if(myPos.z >= 8)
    {
        //we are underground (8 -> 15)
        //view is +/- 2 from the floor we stand on
        if(std::abs(myPos.z - pos.z) > 2)
            return false;
    }

    int32_t offsetz = myPos.z - pos.z;
    return (((uint32_t)pos.x >= myPos.x - viewRangeX + offsetz) && ((uint32_t)pos.x <= myPos.x + viewRangeX + offsetz) &&
        ((uint32_t)pos.y >= myPos.y - viewRangeY + offsetz) && ((uint32_t)pos.y <= myPos.y + viewRangeY + offsetz));
}

bool Creature::canSee(const Position& pos) const
{
    return canSee(getPosition(), pos, Map::maxViewportX, Map::maxViewportY);
}

bool Creature::canSeeCreature(const Creature* creature) const
{
    return creature == this || (!creature->isGhost() && (!creature->isInvisible() || canSeeInvisibility()));
}

bool Creature::canWalkthrough(const Creature* creature) const
{
    if(creature == this)
        return true;

    if(const Creature* _master = creature->getMaster())
    {
        if(_master != this && canWalkthrough(_master))
            return true;
    }

    return creature->isGhost() || creature->isWalkable() || (master &&
        master != creature && master->canWalkthrough(creature));
}

int64_t Creature::getTimeSinceLastMove() const
{
    if(lastStep)
        return OTSYS_TIME() - lastStep;

    return 0x7FFFFFFFFFFFFFFFLL;
}

int32_t Creature::getWalkDelay(Direction dir) const
{
    if(lastStep == 0)
        return 0;

    int64_t ct = OTSYS_TIME();
    int64_t stepDuration = getStepDuration(dir);
    return stepDuration - (ct - lastStep);
}

int32_t Creature::getWalkDelay() const
{
    if(lastStep == 0)
        return 0;

    int64_t ct = OTSYS_TIME();
    int64_t stepDuration = getStepDuration() * lastStepCost;
    return stepDuration - (ct - lastStep);
}

void Creature::onThink(uint32_t interval)
{
    if(!isMapLoaded && useCacheMap())
    {
        isMapLoaded = true;
        updateMapCache();
    }

    if(followCreature && master != followCreature && !canSeeCreature(followCreature))
        internalCreatureDisappear(followCreature, false);

    if(attackedCreature && master != attackedCreature && !canSeeCreature(attackedCreature))
        internalCreatureDisappear(attackedCreature, false);

    blockTicks += interval;
    if(blockTicks >= 1000)
    {
        blockCount = std::min((uint32_t)blockCount + 1, (uint32_t)2);
        blockTicks = 0;
    }

    if(followCreature)
    {
        walkUpdateTicks += interval;
        if(forceUpdateFollowPath || walkUpdateTicks >= 2000)
        {
            walkUpdateTicks = 0;
            forceUpdateFollowPath = false;
            isUpdatingPath = true;
        }
    }

    if(isUpdatingPath)
    {
        isUpdatingPath = false;
        goToFollowCreature();
    }

#ifndef __GROUPED_ATTACKS__
    onAttacking(interval / EVENT_CREATURECOUNT);
#else
    onAttacking(interval);
#endif
    executeConditions(interval);

    CreatureEventList thinkEvents = getCreatureEvents(CREATURE_EVENT_THINK);
    for(CreatureEventList::iterator it = thinkEvents.begin(); it != thinkEvents.end(); ++it)
        (*it)->executeThink(this, interval);
}

void Creature::onAttacking(uint32_t interval)
{
    if(!attackedCreature || attackedCreature->getHealth() < 1)
        return;

    bool deny = false;
    CreatureEventList attackEvents = getCreatureEvents(CREATURE_EVENT_ATTACK);
    for(CreatureEventList::iterator it = attackEvents.begin(); it != attackEvents.end(); ++it)
    {
        if(!(*it)->executeAction(this, attackedCreature) && !deny)
            deny = true;
    }

    if(deny)
        setAttackedCreature(NULL);

    if(!attackedCreature)
        return;

    onAttacked();
    attackedCreature->onAttacked();
    if(g_game.isSightClear(getPosition(), attackedCreature->getPosition(), true))
        doAttacking(interval);
}

void Creature::onWalk()
{
    if(getWalkDelay() <= 0)
    {
        Direction dir;
        uint32_t flags = FLAG_IGNOREFIELDDAMAGE;
        if(!getNextStep(dir, flags))
        {
            if(listWalkDir.empty())
                onWalkComplete();

            stopEventWalk();
        }
        else if(g_game.internalMoveCreature(this, dir, flags) != RET_NOERROR)
            forceUpdateFollowPath = true;
    }

    if(cancelNextWalk)
    {
        cancelNextWalk = false;
        listWalkDir.clear();
        onWalkAborted();
    }

    if(eventWalk)
    {
        eventWalk = 0;
        addEventWalk();
    }
}

void Creature::onWalk(Direction& dir)
{
    int32_t drunk = -1;
    if(!isSuppress(CONDITION_DRUNK))
    {
        Condition* condition = NULL;
        for(ConditionList::const_iterator it = conditions.begin(); it != conditions.end(); ++it)
        {
            if(!(condition = *it) || condition->getType() != CONDITION_DRUNK)
                continue;

            int32_t subId = condition->getSubId();
            if((!condition->getEndTime() || condition->getEndTime() >= OTSYS_TIME()) && subId > drunk)
                drunk = subId;
        }
    }

    if(drunk < 0)
        return;

    drunk += 25;
    int32_t r = random_range(1, 100);
    if(r > drunk)
        return;

    int32_t tmp = (drunk / 5);
    if(r <= tmp)
        dir = NORTH;
    else if(r <= (tmp * 2))
        dir = WEST;
    else if(r <= (tmp * 3))
        dir = SOUTH;
    else if(r <= (tmp * 4))
        dir = EAST;

    g_game.internalCreatureSay(this, MSG_SPEAK_MONSTER_SAY, "Hicks!", isGhost());
}

bool Creature::getNextStep(Direction& dir, uint32_t&)
{
    if(listWalkDir.empty())
        return false;

    dir = listWalkDir.front();
    listWalkDir.pop_front();
    onWalk(dir);
    return true;
}

bool Creature::startAutoWalk(std::list<Direction>& listDir)
{
    const Player* thisPlayer = getPlayer();
    if(thisPlayer && thisPlayer->getNoMove())
    {
        onWalkAborted();
        return false;
    }

    listWalkDir = listDir;
    addEventWalk(listDir.size() == 1);
    return true;
}

void Creature::addEventWalk(bool firstStep/* = false*/)
{
    cancelNextWalk = false;
    if(getStepSpeed() < 1 || eventWalk)
        return;

    int64_t ticks = getEventStepTicks(firstStep);
    if(ticks < 1)
        return;

    if(ticks == 1)
        g_game.checkCreatureWalk(getID());

    eventWalk = Scheduler::getInstance().addEvent(createSchedulerTask(std::max((int64_t)SCHEDULER_MINTICKS, ticks),
        boost::bind(&Game::checkCreatureWalk, &g_game, id)));
}

void Creature::stopEventWalk()
{
    if(!eventWalk)
        return;

    Scheduler::getInstance().stopEvent(eventWalk);
    eventWalk = 0;
}

void Creature::updateMapCache()
{
    const Position& pos = getPosition();
    Position dest(0, 0, pos.z);

    Tile* tile = NULL;
    for(int32_t y = -((mapWalkHeight - 1) / 2); y <= ((mapWalkHeight - 1) / 2); ++y)
    {
        for(int32_t x = -((mapWalkWidth - 1) / 2); x <= ((mapWalkWidth - 1) / 2); ++x)
        {
            dest.x = pos.x + x;
            dest.y = pos.y + y;
            if((tile = g_game.getTile(dest)))
                updateTileCache(tile, dest);
        }
    }
}

#ifdef __DEBUG__
void Creature::validateMapCache()
{
    const Position& myPos = getPosition();
    for(int32_t y = -((mapWalkHeight - 1) / 2); y <= ((mapWalkHeight - 1) / 2); ++y)
    {
        for(int32_t x = -((mapWalkWidth - 1) / 2); x <= ((mapWalkWidth - 1) / 2); ++x)
            getWalkCache(Position(myPos.x + x, myPos.y + y, myPos.z));
    }
}
#endif

void Creature::updateTileCache(const Tile* tile, int32_t dx, int32_t dy)
{
    if((std::abs(dx) <= (mapWalkWidth - 1) / 2) && (std::abs(dy) <= (mapWalkHeight - 1) / 2))
    {
        int32_t x = (mapWalkWidth - 1) / 2 + dx, y = (mapWalkHeight - 1) / 2 + dy;
        localMapCache[y][x] = (tile && tile->__queryAdd(0, this, 1,
            FLAG_PATHFINDING | FLAG_IGNOREFIELDDAMAGE) == RET_NOERROR);
    }
#ifdef __DEBUG__
    else
        std::clog << "Creature::updateTileCache out of range." << std::endl;
#endif
}

void Creature::updateTileCache(const Tile* tile, const Position& pos)
{
    const Position& myPos = getPosition();
    if(pos.z == myPos.z)
        updateTileCache(tile, pos.x - myPos.x, pos.y - myPos.y);
}

void Creature::updateTileCache(const Tile* tile)
{
    if(isMapLoaded && tile->getPosition().z == getPosition().z)
        updateTileCache(tile, tile->getPosition());
}

int32_t Creature::getWalkCache(const Position& pos) const
{
    if(!useCacheMap())
        return 2;

    const Position& myPos = getPosition();
    if(myPos.z != pos.z)
        return 0;

    if(pos == myPos)
        return 1;

    int32_t dx = pos.x - myPos.x, dy = pos.y - myPos.y;
    if((std::abs(dx) <= (mapWalkWidth - 1) / 2) && (std::abs(dy) <= (mapWalkHeight - 1) / 2))
    {
        int32_t x = (mapWalkWidth - 1) / 2 + dx, y = (mapWalkHeight - 1) / 2 + dy;
#ifdef __DEBUG__
        //testing
        Tile* tile = g_game.getTile(pos);
        if(tile && (tile->__queryAdd(0, this, 1, FLAG_PATHFINDING | FLAG_IGNOREFIELDDAMAGE) == RET_NOERROR))
        {
            if(!localMapCache[y][x])
                std::clog << "Wrong cache value" << std::endl;
        }
        else if(localMapCache[y][x])
            std::clog << "Wrong cache value" << std::endl;

#endif
        if(localMapCache[y][x])
            return 1;

        return 0;
    }

    //out of range
    return 2;
}

void Creature::onAddTileItem(const Tile* tile, const Position& pos, const Item*)
{
    if(isMapLoaded && pos.z == getPosition().z)
        updateTileCache(tile, pos);
}

void Creature::onUpdateTileItem(const Tile* tile, const Position& pos, const Item*,
    const ItemType& oldType, const Item*, const ItemType& newType)
{
    if(isMapLoaded && (oldType.blockSolid || oldType.blockPathFind || newType.blockPathFind
        || newType.blockSolid) && pos.z == getPosition().z)
        updateTileCache(tile, pos);
}

void Creature::onRemoveTileItem(const Tile* tile, const Position& pos, const ItemType& iType, const Item*)
{
    if(isMapLoaded && (iType.blockSolid || iType.blockPathFind ||
        iType.isGroundTile()) && pos.z == getPosition().z)
        updateTileCache(tile, pos);
}

void Creature::onCreatureAppear(const Creature* creature)
{
    if(creature == this)
    {
        if(useCacheMap())
        {
            isMapLoaded = true;
            updateMapCache();
        }
    }
    else if(isMapLoaded && creature->getPosition().z == getPosition().z)
        updateTileCache(creature->getTile(), creature->getPosition());
}

void Creature::internalCreatureDisappear(const Creature* creature, bool isLogout)
{
    if(attackedCreature == creature)
    {
        setAttackedCreature(NULL);
        onTargetDisappear(isLogout);
    }

    if(followCreature == creature)
    {
        setFollowCreature(NULL);
        onFollowCreatureDisappear(isLogout);
    }
}

void Creature::onRemovedCreature()
{
    setRemoved();
    removeList();
    if(master && !master->isRemoved())
        master->removeSummon(this);
}

void Creature::onChangeZone(ZoneType_t zone)
{
    if(attackedCreature && zone == ZONE_PROTECTION)
        internalCreatureDisappear(attackedCreature, false);
}

void Creature::onTargetChangeZone(ZoneType_t zone)
{
    if(zone == ZONE_PROTECTION)
        internalCreatureDisappear(attackedCreature, false);
}

void Creature::onCreatureMove(const Creature* creature, const Tile* newTile, const Position& newPos,
    const Tile* oldTile, const Position& oldPos, bool teleport)
{
    if(creature == this)
    {
        if(!oldTile->floorChange() && !oldTile->positionChange())
            setLastPosition(oldPos);

        lastStep = OTSYS_TIME();
        lastStepCost = 1;
        if(!teleport)
        {
            if(std::abs(newPos.x - oldPos.x) >= 1 && std::abs(newPos.y - oldPos.y) >= 1)
                lastStepCost = 3;
        }
        else
            stopEventWalk();

        if(!summons.empty() && (!g_config.getBool(ConfigManager::TELEPORT_SUMMONS) ||
            (g_config.getBool(ConfigManager::TELEPORT_PLAYER_SUMMONS) && !getPlayer())))
        {
            std::list<Creature*>::iterator cit;
            std::list<Creature*> despawnList;
            for(cit = summons.begin(); cit != summons.end(); ++cit)
            {
                const Position pos = (*cit)->getPosition();
                if((std::abs(pos.z - newPos.z) > 2) || (std::max(std::abs((
                    newPos.x) - pos.x), std::abs((newPos.y - 1) - pos.y)) > 30))
                    despawnList.push_back(*cit);
            }

            for(cit = despawnList.begin(); cit != despawnList.end(); ++cit)
                g_game.removeCreature((*cit), true);
        }

        if(newTile->getZone() != oldTile->getZone())
            onChangeZone(getZone());

        //update map cache
        if(isMapLoaded)
        {
            if(!teleport && oldPos.z == newPos.z)
            {
                Tile* tile = NULL;
                const Position& myPos = getPosition();
                if(oldPos.y > newPos.y) //north
                {
                    //shift y south
                    for(int32_t y = mapWalkHeight - 1 - 1; y >= 0; --y)
                        memcpy(localMapCache[y + 1], localMapCache[y], sizeof(localMapCache[y]));

                    //update 0
                    for(int32_t x = -((mapWalkWidth - 1) / 2); x <= ((mapWalkWidth - 1) / 2); ++x)
                    {
                        tile = g_game.getTile(myPos.x + x, myPos.y - ((mapWalkHeight - 1) / 2), myPos.z);
                        updateTileCache(tile, x, -((mapWalkHeight - 1) / 2));
                    }
                }
                else if(oldPos.y < newPos.y) // south
                {
                    //shift y north
                    for(int32_t y = 0; y <= mapWalkHeight - 1 - 1; ++y)
                        memcpy(localMapCache[y], localMapCache[y + 1], sizeof(localMapCache[y]));

                    //update mapWalkHeight - 1
                    for(int32_t x = -((mapWalkWidth - 1) / 2); x <= ((mapWalkWidth - 1) / 2); ++x)
                    {
                        tile = g_game.getTile(myPos.x + x, myPos.y + ((mapWalkHeight - 1) / 2), myPos.z);
                        updateTileCache(tile, x, (mapWalkHeight - 1) / 2);
                    }
                }

                if(oldPos.x < newPos.x) // east
                {
                    //shift y west
                    int32_t starty = 0, endy = mapWalkHeight - 1, dy = (oldPos.y - newPos.y);
                    if(dy < 0)
                        endy = endy + dy;
                    else if(dy > 0)
                        starty = starty + dy;

                    for(int32_t y = starty; y <= endy; ++y)
                    {
                        for(int32_t x = 0; x <= mapWalkWidth - 1 - 1; ++x)
                            localMapCache[y][x] = localMapCache[y][x + 1];
                    }

                    //update mapWalkWidth - 1
                    for(int32_t y = -((mapWalkHeight - 1) / 2); y <= ((mapWalkHeight - 1) / 2); ++y)
                    {
                        tile = g_game.getTile(myPos.x + ((mapWalkWidth - 1) / 2), myPos.y + y, myPos.z);
                        updateTileCache(tile, (mapWalkWidth - 1) / 2, y);
                    }
                }
                else if(oldPos.x > newPos.x) // west
                {
                    //shift y east
                    int32_t starty = 0, endy = mapWalkHeight - 1, dy = (oldPos.y - newPos.y);
                    if(dy < 0)
                        endy = endy + dy;
                    else if(dy > 0)
                        starty = starty + dy;

                    for(int32_t y = starty; y <= endy; ++y)
                    {
                        for(int32_t x = mapWalkWidth - 1 - 1; x >= 0; --x)
                            localMapCache[y][x + 1] = localMapCache[y][x];
                    }

                    //update 0
                    for(int32_t y = -((mapWalkHeight - 1) / 2); y <= ((mapWalkHeight - 1) / 2); ++y)
                    {
                        tile = g_game.getTile(myPos.x - ((mapWalkWidth - 1) / 2), myPos.y + y, myPos.z);
                        updateTileCache(tile, -((mapWalkWidth - 1) / 2), y);
                    }
                }

                updateTileCache(oldTile, oldPos);
#ifdef __DEBUG__
                validateMapCache();
#endif
            }
            else
                updateMapCache();
        }
    }
    else if(isMapLoaded)
    {
        const Position& myPos = getPosition();
        if(newPos.z == myPos.z)
            updateTileCache(newTile, newPos);

        if(oldPos.z == myPos.z)
            updateTileCache(oldTile, oldPos);
    }

    if(creature == followCreature || (creature == this && followCreature))
    {
        if(hasFollowPath)
        {
            isUpdatingPath = true;
            Dispatcher::getInstance().addTask(createTask(
                boost::bind(&Game::updateCreatureWalk, &g_game, getID())));
        }

        if(newPos.z != oldPos.z || !canSee(followCreature->getPosition()))
            internalCreatureDisappear(followCreature, false);
    }

    if(creature == attackedCreature || (creature == this && attackedCreature))
    {
        if(newPos.z == oldPos.z && canSee(attackedCreature->getPosition()))
        {
            if(hasExtraSwing()) //our target is moving lets see if we can get in hit
                Dispatcher::getInstance().addTask(createTask(
                    boost::bind(&Game::checkCreatureAttack, &g_game, getID())));

            if(newTile->getZone() != oldTile->getZone())
                onTargetChangeZone(attackedCreature->getZone());
        }
        else
            internalCreatureDisappear(attackedCreature, false);
    }
}

bool Creature::onDeath()
{
    DeathList deathList = getKillers();
    bool deny = false;

    CreatureEventList prepareDeathEvents = getCreatureEvents(CREATURE_EVENT_PREPAREDEATH);
    for(CreatureEventList::iterator it = prepareDeathEvents.begin(); it != prepareDeathEvents.end(); ++it)
    {
        if(!(*it)->executePrepareDeath(this, deathList) && !deny)
            deny = true;
    }

    if(deny)
        return false;

    int32_t i = 0, size = deathList.size(), limit = g_config.getNumber(ConfigManager::DEATH_ASSISTS) + 1;
    if(limit > 0 && size > limit)
        size = limit;

    Creature* tmp = NULL;
    CreatureVector justifyVec;
    for(DeathList::iterator it = deathList.begin(); it != deathList.end(); ++it, ++i)
    {
        if(it->isNameKill())
            continue;

        if(it == deathList.begin())
            it->setLast();

        if(i < size)
        {
            if(it->getKillerCreature()->getPlayer())
                tmp = it->getKillerCreature();
            else if(it->getKillerCreature()->getPlayerMaster())
                tmp = it->getKillerCreature()->getMaster();
        }

        if(tmp)
        {
            if(std::find(justifyVec.begin(), justifyVec.end(), tmp) == justifyVec.end())
            {
                it->setJustify();
                justifyVec.push_back(tmp);
            }

            tmp = NULL;
        }

        if(!it->getKillerCreature()->onKilledCreature(this, (*it)) && it->isLast())
            return false;
    }

    for(CountMap::iterator it = damageMap.begin(); it != damageMap.end(); ++it)
    {
        if((tmp = g_game.getCreatureByID(it->first)))
            tmp->onTargetKilled(this);
    }

    dropCorpse(deathList);
    if(master)
        master->removeSummon(this);

    return true;
}

void Creature::dropCorpse(DeathList deathList)
{
    if(master)
    {
        g_game.addMagicEffect(getPosition(), MAGIC_EFFECT_POFF);
        return;
    }

    Item* corpse = createCorpse(deathList);
    if(corpse)
        corpse->setParent(VirtualCylinder::virtualCylinder);

    bool deny = false;
    CreatureEventList deathEvents = getCreatureEvents(CREATURE_EVENT_DEATH);
    for(CreatureEventList::iterator it = deathEvents.begin(); it != deathEvents.end(); ++it)
    {
        if(!(*it)->executeDeath(this, corpse, deathList) && !deny)
            deny = true;
    }

    if(!corpse)
        return;

    corpse->setParent(NULL);
    if(deny)
        return;

    Tile* tile = getTile();
    if(!tile)
        return;

    Item* splash = NULL;
    switch(getRace())
    {
        case RACE_VENOM:
            splash = Item::CreateItem(ITEM_FULLSPLASH, FLUID_GREEN);
            break;

        case RACE_BLOOD:
            splash = Item::CreateItem(ITEM_FULLSPLASH, FLUID_BLOOD);
            break;

        default:
            break;
    }

    if(splash)
    {
        g_game.internalAddItem(NULL, tile, splash, INDEX_WHEREEVER, FLAG_NOLIMIT);
        g_game.startDecay(splash);
    }

    g_game.internalAddItem(NULL, tile, corpse, INDEX_WHEREEVER, FLAG_NOLIMIT);
    dropLoot(corpse->getContainer());
    g_game.startDecay(corpse);
}

DeathList Creature::getKillers()
{
    DeathList list;
    CountMap::const_iterator it;

    Creature* lhc = NULL;
    if((lhc = g_game.getCreatureByID(lastHitCreature)))
    {
        int32_t damage = 0;
        if((it = damageMap.find(lastHitCreature)) != damageMap.end())
            damage = it->second.total;

        list.push_back(DeathEntry(lhc, damage));
    }
    else
        list.push_back(DeathEntry(getCombatName(lastDamageSource), 0));

    int32_t requiredTime = g_config.getNumber(ConfigManager::DEATHLIST_REQUIRED_TIME);
    int64_t now = OTSYS_TIME();

    CountBlock_t cb;
    for(it = damageMap.begin(); it != damageMap.end(); ++it)
    {
        cb = it->second;
        if((now - cb.ticks) > requiredTime)
            continue;

        Creature* mdc = g_game.getCreatureByID(it->first);
        if(!mdc || mdc == lhc || (lhc && (mdc->getMaster() == lhc || lhc->getMaster() == mdc)))
            continue;

        bool deny = false;
        for(DeathList::iterator fit = list.begin(); fit != list.end(); ++fit)
        {
            if(fit->isNameKill())
                continue;

            Creature* tmp = fit->getKillerCreature();
            if(!(mdc->getName() == tmp->getName() && mdc->getMaster() == tmp->getMaster()) &&
                (!mdc->getMaster() || (mdc->getMaster() != tmp && mdc->getMaster() != tmp->getMaster()))
                && (mdc->getSummonCount() <= 0 || tmp->getMaster() != mdc))
                continue;

            deny = true;
            break;
        }

        if(!deny)
            list.push_back(DeathEntry(mdc, cb.total));
    }

    if(list.size() > 1)
        std::sort(list.begin() + 1, list.end(), DeathLessThan());

    return list;
}

bool Creature::hasBeenAttacked(uint32_t attackerId) const
{
    CountMap::const_iterator it = damageMap.find(attackerId);
    if(it != damageMap.end())
        return (OTSYS_TIME() - it->second.ticks) <= g_config.getNumber(ConfigManager::PZ_LOCKED);

    return false;
}

Item* Creature::createCorpse(DeathList)
{
    return Item::CreateItem(getLookCorpse());
}

void Creature::changeHealth(int32_t healthChange)
{
    if(healthChange > 0)
        health += std::min(healthChange, getMaxHealth() - health);
    else
        health = std::max((int32_t)0, health + healthChange);

    g_game.addCreatureHealth(this);
}

void Creature::changeMana(int32_t manaChange)
{
    if(manaChange > 0)
        mana += std::min(manaChange, getMaxMana() - mana);
    else
        mana = std::max((int32_t)0, mana + manaChange);
}

bool Creature::getStorage(const std::string& key, std::string& value) const
{
    StorageMap::const_iterator it = storageMap.find(key);
    if(it != storageMap.end())
    {
        value = it->second;
        return true;
    }

    value = "-1";
    return false;
}

bool Creature::setStorage(const std::string& key, const std::string& value)
{
    storageMap[key] = value;
    return true;
}

void Creature::gainHealth(Creature* caster, int32_t healthGain)
{
    if(healthGain > 0)
    {
        int32_t prevHealth = getHealth();
        changeHealth(healthGain);

        int32_t effectiveGain = getHealth() - prevHealth;
        if(caster)
            caster->onTargetGainHealth(this, effectiveGain);
    }
    else
        changeHealth(healthGain);
}

void Creature::drainHealth(Creature* attacker, CombatType_t combatType, int32_t damage)
{
    lastDamageSource = combatType;
    onAttacked();

    changeHealth(-damage);
    if(attacker)
        attacker->onTargetDrainHealth(this, damage);
}

void Creature::drainMana(Creature* attacker, CombatType_t combatType, int32_t damage)
{
    lastDamageSource = combatType;
    onAttacked();

    changeMana(-damage);
    if(attacker)
        attacker->onTargetDrainMana(this, damage);
}

BlockType_t Creature::blockHit(Creature* attacker, CombatType_t combatType, int32_t& damage,
    bool checkDefense/* = false*/, bool checkArmor/* = false*/, bool/* reflect = true*/, bool/* field = false*/, bool/* element = false*/)
{
    BlockType_t blockType = BLOCK_NONE;
    if(isImmune(combatType))
    {
        damage = 0;
        blockType = BLOCK_IMMUNITY;
    }
    else if(checkDefense || checkArmor)
    {
        bool hasDefense = false;
        if(blockCount > 0)
        {
            --blockCount;
            hasDefense = true;
        }

        if(checkDefense && hasDefense)
        {
            int32_t maxDefense = getDefense(), minDefense = maxDefense / 2;
            damage -= random_range(minDefense, maxDefense);
            if(damage <= 0)
            {
                damage = 0;
                blockType = BLOCK_DEFENSE;
                checkArmor = false;
            }
        }

        if(checkArmor)
        {
            int32_t armorValue = getArmor(), minArmorReduction = 0,
                maxArmorReduction = 0;
            if(armorValue > 1)
            {
                minArmorReduction = (int32_t)std::ceil(armorValue * 0.475);
                maxArmorReduction = (int32_t)std::ceil(
                    ((armorValue * 0.475) - 1) + minArmorReduction);
            }
            else if(armorValue == 1)
            {
                minArmorReduction = 1;
                maxArmorReduction = 1;
            }

            damage -= random_range(minArmorReduction, maxArmorReduction);
            if(damage <= 0)
            {
                damage = 0;
                blockType = BLOCK_ARMOR;
            }
        }

        if(hasDefense && blockType != BLOCK_NONE)
            onBlockHit(blockType);
    }

    if(attacker)
    {
        attacker->onTarget(this);
        attacker->onTargetBlockHit(this, blockType);
    }

    onAttacked();
    return blockType;
}

bool Creature::setAttackedCreature(Creature* creature)
{
    if(creature)
    {
        const Position& creaturePos = creature->getPosition();
        if(creaturePos.z != getPosition().z || !canSee(creaturePos))
        {
            attackedCreature = NULL;
            return false;
        }
    }

    attackedCreature = creature;
    if(attackedCreature)
    {
        onTarget(attackedCreature);
        attackedCreature->onAttacked();
    }

    for(std::list<Creature*>::iterator cit = summons.begin(); cit != summons.end(); ++cit)
        (*cit)->setAttackedCreature(creature);

    return true;
}

void Creature::getPathSearchParams(const Creature*, FindPathParams& fpp) const
{
    fpp.fullPathSearch = !hasFollowPath;
    fpp.clearSight = true;
    fpp.maxSearchDist = 12;
    fpp.minTargetDist = fpp.maxTargetDist = 1;
}

void Creature::goToFollowCreature()
{
    if(getPlayer() && (OTSYS_TIME() - lastFailedFollow <= g_config.getNumber(ConfigManager::FOLLOW_EXHAUST)))
        return;

    if(followCreature)
    {
        FindPathParams fpp;
        getPathSearchParams(followCreature, fpp);
        if(g_game.getPathToEx(this, followCreature->getPosition(), listWalkDir, fpp))
        {
            hasFollowPath = true;
            startAutoWalk(listWalkDir);
        }
        else
        {
            hasFollowPath = false;
            lastFailedFollow = OTSYS_TIME();
        }
    }

    onFollowCreatureComplete(followCreature);
}

bool Creature::setFollowCreature(Creature* creature, bool /*fullPathSearch = false*/)
{
    if(creature)
    {
        if(followCreature == creature)
            return true;

        const Position& creaturePos = creature->getPosition();
        if(creaturePos.z != getPosition().z || !canSee(creaturePos))
        {
            followCreature = NULL;
            return false;
        }

        if(!listWalkDir.empty())
        {
            listWalkDir.clear();
            onWalkAborted();
        }

        hasFollowPath = forceUpdateFollowPath = false;
        followCreature = creature;
        isUpdatingPath = true;
    }
    else
    {
        isUpdatingPath = false;
        followCreature = NULL;
    }

    g_game.updateCreatureWalk(id);
    onFollowCreature(creature);
    return true;
}

double Creature::getDamageRatio(Creature* attacker) const
{
    double totalDamage = 0, attackerDamage = 0;
    for(CountMap::const_iterator it = damageMap.begin(); it != damageMap.end(); ++it)
    {
        totalDamage += it->second.total;
        if(it->first == attacker->getID())
            attackerDamage += it->second.total;
    }

    return (totalDamage ? attackerDamage / totalDamage : 0);
}

double Creature::getGainedExperience(Creature* attacker) const
{
    return getDamageRatio(attacker) * (double)getLostExperience();
}

void Creature::addDamagePoints(Creature* attacker, int32_t damagePoints)
{
    if(damagePoints < 0)
        return;

    uint32_t attackerId = 0;
    if(attacker)
        attackerId = attacker->getID();

    CountMap::iterator it = damageMap.find(attackerId);
    if(it != damageMap.end())
    {
        it->second.ticks = OTSYS_TIME();
        if(damagePoints > 0)
            it->second.total += damagePoints;
    }
    else
        damageMap[attackerId] = CountBlock_t(damagePoints);

    if(damagePoints > 0)
        lastHitCreature = attackerId;
}

void Creature::addHealPoints(Creature* caster, int32_t healthPoints)
{
    if(healthPoints <= 0)
        return;

    uint32_t casterId = 0;
    if(caster)
        casterId = caster->getID();

    CountMap::iterator it = healMap.find(casterId);
    if(it != healMap.end())
    {
        it->second.ticks = OTSYS_TIME();
        it->second.total += healthPoints;
    }
    else
        healMap[casterId] = CountBlock_t(healthPoints);
}

void Creature::onAddCondition(ConditionType_t type, bool hadCondition)
{
    switch(type)
    {
        case CONDITION_INVISIBLE:
        {
            if(!hadCondition)
                g_game.internalCreatureChangeVisible(this, VISIBLE_DISAPPEAR);

            break;
        }

        case CONDITION_PARALYZE:
        {
            if(hasCondition(CONDITION_HASTE, -1, false))
                removeCondition(CONDITION_HASTE);

            break;
        }

        case CONDITION_HASTE:
        {
            if(hasCondition(CONDITION_PARALYZE, -1, false))
                removeCondition(CONDITION_PARALYZE);

            break;
        }

        default:
            break;
    }
}

void Creature::onEndCondition(ConditionType_t type)
{
    if(type == CONDITION_INVISIBLE && !hasCondition(CONDITION_INVISIBLE, -1, false))
        g_game.internalCreatureChangeVisible(this, VISIBLE_APPEAR);
}

void Creature::onTickCondition(ConditionType_t type, int32_t, bool& _remove)
{
    if(const MagicField* field = getTile()->getFieldItem())
    {
        switch(type)
        {
            case CONDITION_FIRE:
                _remove = field->getCombatType() != COMBAT_FIREDAMAGE;
                break;
            case CONDITION_ENERGY:
                _remove = field->getCombatType() != COMBAT_ENERGYDAMAGE;
                break;
            case CONDITION_POISON:
                _remove = field->getCombatType() != COMBAT_EARTHDAMAGE;
                break;
            case CONDITION_FREEZING:
                _remove = field->getCombatType() != COMBAT_ICEDAMAGE;
                break;
            case CONDITION_DAZZLED:
                _remove = field->getCombatType() != COMBAT_HOLYDAMAGE;
                break;
            case CONDITION_CURSED:
                _remove = field->getCombatType() != COMBAT_DEATHDAMAGE;
                break;
            case CONDITION_DROWN:
                _remove = field->getCombatType() != COMBAT_DROWNDAMAGE;
                break;
            case CONDITION_BLEEDING:
                _remove = field->getCombatType() != COMBAT_PHYSICALDAMAGE;
                break;
            default:
                break;
        }
    }
}

void Creature::onCombatRemoveCondition(const Creature*, Condition* condition)
{
    removeCondition(condition);
}

void Creature::onIdleStatus()
{
    if(getHealth() > 0)
    {
        healMap.clear();
        damageMap.clear();
    }
}

void Creature::onTargetDrainHealth(Creature* target, int32_t points)
{
    onTargetDrain(target, points);
}

void Creature::onTargetDrainMana(Creature* target, int32_t points)
{
    onTargetDrain(target, points);
}

void Creature::onTargetDrain(Creature* target, int32_t points)
{
    if(points >= 0)
        target->addDamagePoints(this, points);
}

void Creature::onTargetGainHealth(Creature* target, int32_t points)
{
    onTargetGain(target, points);
}

void Creature::onTargetGainMana(Creature* target, int32_t points)
{
    onTargetGain(target, points);
}

void Creature::onTargetGain(Creature* target, int32_t points)
{
    if(points > 0)
        target->addHealPoints(this, points);
}

void Creature::onTargetKilled(Creature* target)
{
    if(target == this)
        return;

    double exp = target->getGainedExperience(this);
    onGainExperience(exp, target, false);
}

bool Creature::onKilledCreature(Creature* target, DeathEntry& entry)
{
    bool ret = true;
    if(master)
        ret = master->onKilledCreature(target, entry);

    CreatureEventList killEvents = getCreatureEvents(CREATURE_EVENT_KILL);
    if(!entry.isLast())
    {
        for(CreatureEventList::iterator it = killEvents.begin(); it != killEvents.end(); ++it)
            (*it)->executeKill(this, target, entry);

        return true;
    }

    for(CreatureEventList::iterator it = killEvents.begin(); it != killEvents.end(); ++it)
    {
        if(!(*it)->executeKill(this, target, entry) && ret)
            ret = false;
    }

    return ret;
}

void Creature::onGainExperience(double& gainExp, Creature* target, bool multiplied)
{
    if(gainExp <= 0)
        return;

    if(master)
    {
        gainExp = gainExp / 2;
        master->onGainExperience(gainExp, target, multiplied);
    }
    else if(!multiplied)
        gainExp *= g_config.getDouble(ConfigManager::RATE_EXPERIENCE);

    int16_t color = g_config.getNumber(ConfigManager::EXPERIENCE_COLOR);
    if(color < 0)
        color = random_range(0, 255);

    const Position& targetPos = getPosition();

    SpectatorVec list;
    g_game.getSpectators(list, targetPos, false, false, Map::maxViewportX, Map::maxViewportX,
        Map::maxViewportY, Map::maxViewportY);

    std::stringstream ss;
    ss << ucfirst(getNameDescription()) << " gained " << (uint64_t)gainExp << " experience points.";

    SpectatorVec textList;
    for(SpectatorVec::const_iterator it = list.begin(); it != list.end(); ++it)
    {
        if(!(*it)->getPlayer())
            continue;

        if((*it) != this)
            textList.push_back(*it);
    }

    MessageDetails* details = new MessageDetails((int32_t)gainExp, (Color_t)color);
    g_game.addStatsMessage(textList, MSG_EXPERIENCE_OTHERS, ss.str(), targetPos, details);
    if(Player* player = getPlayer())
    {
        ss.str("");
        ss << "You gained " << (uint64_t)gainExp << " experience points.";
        player->sendStatsMessage(MSG_EXPERIENCE, ss.str(), targetPos, details);
    }

    delete details;
}

void Creature::onGainSharedExperience(double& gainExp, Creature* target, bool multiplied)
{
    if(gainExp <= 0)
        return;

    if(master)
    {
        gainExp = gainExp / 2;
        master->onGainSharedExperience(gainExp, target, multiplied);
    }
    else if(!multiplied)
        gainExp *= g_config.getDouble(ConfigManager::RATE_EXPERIENCE);

    int16_t color = g_config.getNumber(ConfigManager::EXPERIENCE_COLOR);
    if(color < 0)
        color = random_range(0, 255);

    const Position& targetPos = getPosition();

    SpectatorVec list;
    g_game.getSpectators(list, targetPos, false, false, Map::maxViewportX, Map::maxViewportX,
        Map::maxViewportY, Map::maxViewportY);

    std::stringstream ss;
    ss << ucfirst(getNameDescription()) << " gained " << (uint64_t)gainExp << " experience points.";

    SpectatorVec textList;
    for(SpectatorVec::const_iterator it = list.begin(); it != list.end(); ++it)
    {
        if(!(*it)->getPlayer())
            continue;

        if((*it) != this)
            textList.push_back(*it);
    }

    MessageDetails* details = new MessageDetails((int32_t)gainExp, (Color_t)color);
    g_game.addStatsMessage(textList, MSG_EXPERIENCE_OTHERS, ss.str(), targetPos, details);
    if(Player* player = getPlayer())
    {
        ss.str("");
        ss << "You gained " << (uint64_t)gainExp << " experience points.";
        player->sendStatsMessage(MSG_EXPERIENCE, ss.str(), targetPos, details);
    }

    delete details;
}

void Creature::addSummon(Creature* creature)
{
    creature->setDropLoot(LOOT_DROP_NONE);
    creature->setLossSkill(false);

    creature->setMaster(this);
    creature->addRef();
    summons.push_back(creature);
}

void Creature::removeSummon(const Creature* creature)
{
    std::list<Creature*>::iterator it = std::find(summons.begin(), summons.end(), creature);
    if(it == summons.end())
        return;

    (*it)->setMaster(NULL);
    (*it)->unRef();
    summons.erase(it);
}

void Creature::destroySummons()
{
    for(std::list<Creature*>::iterator it = summons.begin(); it != summons.end(); ++it)
    {
        (*it)->setAttackedCreature(NULL);
        (*it)->changeHealth(-(*it)->getHealth());

        (*it)->setMaster(NULL);
        (*it)->unRef();
    }

    summons.clear();
}

bool Creature::addCondition(Condition* condition)
{
    if(!condition)
        return false;

    bool hadCondition = hasCondition(condition->getType(), -1, false);
    if(Condition* previous = getCondition(condition->getType(), condition->getId(), condition->getSubId()))
    {
        previous->addCondition(this, condition);
        delete condition;
        return true;
    }

    if(condition->startCondition(this))
    {
        conditions.push_back(condition);
        onAddCondition(condition->getType(), hadCondition);
        return true;
    }

    delete condition;
    return false;
}

bool Creature::addCombatCondition(Condition* condition)
{
    bool hadCondition = hasCondition(condition->getType(), -1, false);
    //Caution: condition variable could be deleted after the call to addCondition
    ConditionType_t type = condition->getType();
    if(!addCondition(condition))
        return false;

    onAddCombatCondition(type, hadCondition);
    return true;
}

void Creature::removeCondition(ConditionType_t type)
{
    for(ConditionList::iterator it = conditions.begin(); it != conditions.end(); )
    {
        if((*it)->getType() != type)
        {
            ++it;
            continue;
        }

        Condition* condition = *it;
        it = conditions.erase(it);

        condition->endCondition(this, CONDITIONEND_ABORT);
        onEndCondition(condition->getType());
        delete condition;
    }
}

void Creature::removeCondition(ConditionType_t type, ConditionId_t id)
{
    for(ConditionList::iterator it = conditions.begin(); it != conditions.end(); )
    {
        if((*it)->getType() != type || (*it)->getId() != id)
        {
            ++it;
            continue;
        }

        Condition* condition = *it;
        it = conditions.erase(it);

        condition->endCondition(this, CONDITIONEND_ABORT);
        onEndCondition(condition->getType());
        delete condition;
    }
}

void Creature::removeCondition(Condition* condition)
{
    ConditionList::iterator it = std::find(conditions.begin(), conditions.end(), condition);
    if(it != conditions.end())
    {
        Condition* condition = *it;
        it = conditions.erase(it);

        condition->endCondition(this, CONDITIONEND_ABORT);
        onEndCondition(condition->getType());
        delete condition;
    }
}

void Creature::removeCondition(const Creature* attacker, ConditionType_t type)
{
    ConditionList tmpList = conditions;
    for(ConditionList::iterator it = tmpList.begin(); it != tmpList.end(); ++it)
    {
        if((*it)->getType() == type)
            onCombatRemoveCondition(attacker, *it);
    }
}

void Creature::removeConditions(ConditionEnd_t reason, bool onlyPersistent/* = true*/)
{
    for(ConditionList::iterator it = conditions.begin(); it != conditions.end(); )
    {
        if(onlyPersistent && !(*it)->isPersistent())
        {
            ++it;
            continue;
        }

        Condition* condition = *it;
        it = conditions.erase(it);

        condition->endCondition(this, reason);
        onEndCondition(condition->getType());
        delete condition;
    }
}

Condition* Creature::getCondition(ConditionType_t type, ConditionId_t id, uint32_t subId/* = 0*/) const
{
    for(ConditionList::const_iterator it = conditions.begin(); it != conditions.end(); ++it)
    {
        if((*it)->getType() == type && (*it)->getId() == id && (*it)->getSubId() == subId)
            return *it;
    }

    return NULL;
}

void Creature::executeConditions(uint32_t interval)
{
    for(ConditionList::iterator it = conditions.begin(); it != conditions.end(); )
    {
        if((*it)->executeCondition(this, interval))
        {
            ++it;
            continue;
        }

        Condition* condition = *it;
        it = conditions.erase(it);

        condition->endCondition(this, CONDITIONEND_TICKS);
        onEndCondition(condition->getType());
        delete condition;
    }
}

bool Creature::hasCondition(ConditionType_t type, int32_t subId/* = 0*/, bool checkTime/* = true*/) const
{
    if(isSuppress(type))
        return false;

    Condition* condition = NULL;
    for(ConditionList::const_iterator it = conditions.begin(); it != conditions.end(); ++it)
    {
        if(!(condition = *it) || condition->getType() != type ||
            (subId != -1 && condition->getSubId() != (uint32_t)subId))
            continue;

        if(!checkTime || !condition->getEndTime() || condition->getEndTime() >= OTSYS_TIME())
            return true;
    }

    return false;
}

bool Creature::isImmune(CombatType_t type) const
{
    return ((getDamageImmunities() & (uint32_t)type) == (uint32_t)type);
}

bool Creature::isImmune(ConditionType_t type) const
{
    return ((getConditionImmunities() & (uint32_t)type) == (uint32_t)type);
}

bool Creature::isSuppress(ConditionType_t type) const
{
    return ((getConditionSuppressions() & (uint32_t)type) == (uint32_t)type);
}

std::string Creature::getDescription(int32_t) const
{
    return "a creature";
}

int32_t Creature::getStepDuration(Direction dir) const
{
    int32_t stepDuration = getStepDuration();
    if(dir == NORTHWEST || dir == NORTHEAST || dir == SOUTHWEST || dir == SOUTHEAST)
        stepDuration *= 3;

    return stepDuration;
}

int32_t Creature::getStepDuration() const
{
    if(isRemoved())
        return 0;

    uint32_t calculatedStepSpeed;
    uint32_t groundSpeed;

    int32_t stepSpeed = getStepSpeed();
    if(stepSpeed > -Creature::speedB)
    {
        calculatedStepSpeed = floor((Creature::speedA * log((stepSpeed / 2) + Creature::speedB) + Creature::speedC) + 0.5);
        if(calculatedStepSpeed <= 0)
            calculatedStepSpeed = 1;
    }
    else
        calculatedStepSpeed = 1;

    const Tile* tile = getTile();
    if(tile && tile->ground)
    {
        uint32_t groundId = tile->ground->getID();
        groundSpeed = Item::items[groundId].speed;
        if(groundSpeed == 0)
            groundSpeed = 150;
    }
    else
        groundSpeed = 150;

    double duration = std::floor(1000 * groundSpeed / (double)calculatedStepSpeed);
    return std::ceil(duration / 50) * 50;
}

int64_t Creature::getEventStepTicks(bool onlyDelay/* = false*/) const
{
    int64_t ret = getWalkDelay();
    if(ret <= 0)
    {
        int32_t stepDuration = getStepDuration();
        if(onlyDelay && stepDuration > 0)
            ret = 1;
        else
            ret = stepDuration * lastStepCost;
    }
    return ret;
}

void Creature::getCreatureLight(LightInfo& light) const
{
    light = internalLight;
}

void Creature::resetLight()
{
    internalLight.level = internalLight.color = 0;
}

bool Creature::registerCreatureEvent(const std::string& name)
{
    CreatureEvent* event = g_creatureEvents->getEventByName(name);
    if(!event || !event->isLoaded()) //check for existance
        return false;

    for(CreatureEventList::iterator it = eventsList.begin(); it != eventsList.end(); ++it)
    {
        if((*it) == event) //do not allow registration of same event more than once
            return false;
    }

    eventsList.push_back(event);
    return true;
}

bool Creature::unregisterCreatureEvent(const std::string& name)
{
    CreatureEvent* event = g_creatureEvents->getEventByName(name);
    if(!event || !event->isLoaded()) //check for existance
        return false;

    for(CreatureEventList::iterator it = eventsList.begin(); it != eventsList.end(); ++it)
    {
        if((*it) != event)
            continue;

        eventsList.erase(it);
        return true; // we shouldn't have a duplicate
    }

    return false;
}

void Creature::unregisterCreatureEvent(CreatureEventType_t type)
{
    for(CreatureEventList::iterator it = eventsList.begin(); it != eventsList.end(); ++it)
    {
        if((*it)->getEventType() == type)
            it = eventsList.erase(it);
    }
}

CreatureEventList Creature::getCreatureEvents(CreatureEventType_t type)
{
    CreatureEventList list;
    for(CreatureEventList::iterator it = eventsList.begin(); it != eventsList.end(); ++it)
    {
        if((*it)->getEventType() == type && (*it)->isLoaded())
            list.push_back(*it);
    }

    return list;
}

FrozenPathingConditionCall::FrozenPathingConditionCall(const Position& _targetPos)
{
    targetPos = _targetPos;
}

bool FrozenPathingConditionCall::isInRange(const Position& startPos, const Position& testPos,
    const FindPathParams& fpp) const
{
    int32_t dxMax = ((fpp.fullPathSearch || (startPos.x - targetPos.x) >= 0) ? fpp.maxTargetDist : 0);
    if(testPos.x > targetPos.x + dxMax)
        return false;

    int32_t dxMin = ((fpp.fullPathSearch || (startPos.x - targetPos.x) <= 0) ? fpp.maxTargetDist : 0);
    if(testPos.x < targetPos.x - dxMin)
        return false;

    int32_t dyMax = ((fpp.fullPathSearch || (startPos.y - targetPos.y) >= 0) ? fpp.maxTargetDist : 0);
    if(testPos.y > targetPos.y + dyMax)
        return false;

    int32_t dyMin = ((fpp.fullPathSearch || (startPos.y - targetPos.y) <= 0) ? fpp.maxTargetDist : 0);
    if(testPos.y < targetPos.y - dyMin)
        return false;

    return true;
}

bool FrozenPathingConditionCall::operator()(const Position& startPos, const Position& testPos,
    const FindPathParams& fpp, int32_t& bestMatchDist) const
{
    if(!isInRange(startPos, testPos, fpp))
        return false;

    if(fpp.clearSight && !g_game.isSightClear(testPos, targetPos, true))
        return false;

    int32_t testDist = std::max(std::abs(targetPos.x - testPos.x), std::abs(targetPos.y - testPos.y));
    if(fpp.maxTargetDist == 1)
    {
        if(testDist < fpp.minTargetDist || testDist > fpp.maxTargetDist)
            return false;

        return true;
    }
    else if(testDist <= fpp.maxTargetDist)
    {
        if(testDist < fpp.minTargetDist)
            return false;

        if(testDist == fpp.maxTargetDist)
        {
            bestMatchDist = 0;
            return true;
        }
        else if(testDist > bestMatchDist)
        {
            //not quite what we want, but the best so far
            bestMatchDist = testDist;
            return true;
        }
    }

    return false;
}