C++ GetPositionY函數代碼示例

 Creature* Transport::AddNPCPassengerInInstance(uint32 entry, float x, float y, float z, float o, uint32 anim)
 {
        Map* map = GetMap();
        Creature* pCreature = new Creature;

        if (!pCreature->Create(sObjectMgr->GenerateLowGuid(HIGHGUID_UNIT), map, GetPhaseMask(), entry, 0, GetGOInfo()->faction, 0, 0, 0, 0))
        {
                delete pCreature;
                return NULL;
        }

        pCreature->SetTransport(this);
        pCreature->AddUnitMovementFlag(MOVEMENTFLAG_ONTRANSPORT);
        pCreature->m_movementInfo.guid = GetGUID();
        pCreature->m_movementInfo.t_pos.Relocate(x, y, z, o);
        o += GetOrientation();
        MapManager::NormalizeOrientation(o);

        pCreature->Relocate(
            GetPositionX() + (x * cos(GetOrientation()) + y * sin(GetOrientation() + float(M_PI))),
            GetPositionY() + (y * cos(GetOrientation()) + x * sin(GetOrientation())),
            z + GetPositionZ() ,
            o);

        if (!pCreature->IsPositionValid())
        {
            sLog->outError("Creature (guidlow %d, entry %d) not created. Suggested coordinates isn't valid (X: %f Y: %f)", pCreature->GetGUIDLow(), pCreature->GetEntry(), pCreature->GetPositionX(), pCreature->GetPositionY());
            delete pCreature;
            return NULL;
        }

        map->Add(pCreature);
        m_NPCPassengerSet.insert(pCreature);

        pCreature->setActive(true);
        sScriptMgr->OnAddCreaturePassenger(this, pCreature);
        return pCreature;
}

Creature* Transport::CreateNPCPassenger(uint32 entry, float x, float y, float z, float o, CreatureData const* data /*= NULL*/)
{
    Map* map = GetMap();
    Creature* creature = new Creature();

    if (!creature->Create(sObjectMgr->GenerateLowGuid(HIGHGUID_UNIT), map, GetPhaseMask(), entry, 0, GetGOInfo()->faction, 0.0f, 0.0f, 0.0f, 0.0f, data))
    {
        delete creature;
        return NULL;
    }

    creature->SetTransport(this);
    creature->AddUnitMovementFlag(MOVEMENTFLAG_ONTRANSPORT);
    creature->m_movementInfo.guid = GetGUID();
    creature->m_movementInfo.t_pos.Relocate(x, y, z, o);
    o += GetOrientation();
    MapManager::NormalizeOrientation(o);

    creature->Relocate(GetPositionX() + (x * cos(GetOrientation()) + y * sin(GetOrientation() + float(M_PI))),
                       GetPositionY() + (y * cos(GetOrientation()) + x * sin(GetOrientation())),
                       z + GetPositionZ(), o);

    creature->SetHomePosition(creature->GetPositionX(), creature->GetPositionY(), creature->GetPositionZ(), creature->GetOrientation());

    if (!creature->IsPositionValid())
    {
        sLog->outError("Creature (guidlow %d, entry %d) not created. Suggested coordinates isn't valid (X: %f Y: %f)",creature->GetGUIDLow(),creature->GetEntry(),creature->GetPositionX(),creature->GetPositionY());
        delete creature;
        return NULL;
    }

    map->AddToMap(creature);
    AddPassenger(creature);
    creature->SetWorldObject(true); //so it will not be unloaded with grid

    sScriptMgr->OnAddCreaturePassenger(this, creature);
    return creature;
}

void DynamicObject::Update(uint32 p_time)
{
    // caster can be not in world at time dynamic object update, but dynamic object not yet deleted in Unit destructor
    Unit* caster = GetCaster();
    if(!caster)
    {
        Delete();
        return;
    }

    bool deleteThis = false;

    if(m_aliveDuration > int32(p_time))
        m_aliveDuration -= p_time;
    else
        deleteThis = true;

    // TODO: make a timer and update this in larger intervals
    CellPair p(MaNGOS::ComputeCellPair(GetPositionX(), GetPositionY()));
    Cell cell = RedZone::GetZone(p);
    cell.data.Part.reserved = ALL_DISTRICT;
    cell.SetNoCreate();

    MaNGOS::DynamicObjectUpdater notifier(*this,caster);

    TypeContainerVisitor<MaNGOS::DynamicObjectUpdater, WorldTypeMapContainer > world_object_notifier(notifier);
    TypeContainerVisitor<MaNGOS::DynamicObjectUpdater, GridTypeMapContainer > grid_object_notifier(notifier);

    CellLock<GridReadGuard> cell_lock(cell, p);
    cell_lock->Visit(cell_lock, world_object_notifier, *MapManager::Instance().GetMap(GetMapId(), this));
    cell_lock->Visit(cell_lock, grid_object_notifier,  *MapManager::Instance().GetMap(GetMapId(), this));

    if(deleteThis)
    {
        caster->RemoveDynObjectWithGUID(GetGUID());
        Delete();
    }
}

void GameObject::SaveToDB()
{
	std::stringstream ss;
	ss << "REPLACE INTO gameobject_spawns VALUES("
		<< ((m_spawn == NULL) ? 0 : m_spawn->id) << ","
		<< GetEntry() << ","
		<< GetMapId() << ","
		<< GetPositionX() << ","
		<< GetPositionY() << ","
		<< GetPositionZ() << ","
		<< GetOrientation() << ","
		<< GetUInt64Value(GAMEOBJECT_ROTATION) << ","
		<< GetFloatValue(GAMEOBJECT_PARENTROTATION) << ","
		<< GetFloatValue(GAMEOBJECT_PARENTROTATION + 2) << ","
		<< GetFloatValue(GAMEOBJECT_PARENTROTATION + 3) << ","
		<< ( GetByte(GAMEOBJECT_BYTES_1, 0)? 1 : 0 ) << ","
		<< GetUInt32Value(GAMEOBJECT_FLAGS) << ","
		<< GetUInt32Value(GAMEOBJECT_FACTION) << ","
		<< GetFloatValue(OBJECT_FIELD_SCALE_X) << ","
		<< m_phaseMode << ","
		<< m_phaseMode << ")";
	WorldDatabase.Execute(ss.str().c_str());
}

void Transporter::TeleportTransport(uint32 newMapid, uint32 oldmap, float x, float y, float z)
{
    //sEventMgr.RemoveEvents(this, EVENT_TRANSPORTER_NEXT_WAYPOINT);

    RemoveFromWorld(false);
    SetMapId(newMapid);
    SetPosition(x, y, z, m_position.o, false);
    AddToWorld();

    WorldPacket packet(SMSG_TRANSFER_PENDING, 12);
    packet << newMapid;
    packet << getEntry();
    packet << oldmap;

    for (auto passengerGuid : m_passengers)
    {
        auto passenger = objmgr.GetPlayer(passengerGuid);
        if (passenger == nullptr)
            continue;

        passenger->GetSession()->SendPacket(&packet);
        bool teleport_successful = passenger->Teleport(LocationVector(x, y, z, passenger->GetOrientation()), this->GetMapMgr());
        if (!teleport_successful)
        {
            passenger->RepopAtGraveyard(passenger->GetPositionX(), passenger->GetPositionY(), passenger->GetPositionZ(), passenger->GetMapId());
        }
        else
        {
            if (!passenger->HasUnitMovementFlag(MOVEFLAG_TRANSPORT))
            {
                passenger->AddUnitMovementFlag(MOVEFLAG_TRANSPORT);
            }
        }
    }

    this->RespawnCreaturePassengers();
}

// gunship data
Creature* Transport::AddNPCPassengerInInstance(uint32 entry, float x, float y, float z, float o, uint32 anim)
{
    Map* map = GetMap();
    Creature* creature = new Creature;

    if (!creature->Create(sObjectMgr->GenerateLowGuid(HIGHGUID_UNIT), map, GetPhaseMask(), entry, 0, GetGOInfo()->faction, 0, 0, 0, 0))
    {
        delete creature;
        return 0;
    }

    creature->SetTransport(this);
    creature->AddUnitMovementFlag(MOVEMENTFLAG_ONTRANSPORT);
    creature->m_movementInfo.guid = GetGUID();
    creature->m_movementInfo.transport.pos.Relocate(x, y, z, o);

    creature->Relocate(
        GetPositionX() + (x * cos(GetOrientation()) + y * sin(GetOrientation() + float(M_PI))),
        GetPositionY() + (y * cos(GetOrientation()) + x * sin(GetOrientation())),
        z + GetPositionZ(),
        o + GetOrientation());

    creature->SetHomePosition(creature->GetPositionX(), creature->GetPositionY(), creature->GetPositionZ(), creature->GetOrientation());

    if (!creature->IsPositionValid())
    {
        delete creature;
        return 0;
    }

    map->AddToMap(creature);
    m_NPCPassengerSet.insert(creature);

    creature->setActive(true);
    sScriptMgr->OnAddCreaturePassenger(this, creature);
    return creature;
}

void Creature::SaveToDB()
{
    sDatabase.BeginTransaction();

    sDatabase.PExecuteLog("DELETE FROM `creature` WHERE `guid` = '%u'", m_DBTableGuid);

    std::ostringstream ss;
    ss << "INSERT INTO `creature` VALUES ("
        << m_DBTableGuid << ","
        << GetEntry() << ","
        << GetMapId() <<","
        << GetPositionX() << ","
        << GetPositionY() << ","
        << GetPositionZ() << ","
        << GetOrientation() << ","
        << m_respawnDelay << ","                            //respawn time
        << (float) 0  << ","                                //spawn distance (float)
        << (uint32) (0) << ","                              //currentwaypoint
        << respawn_cord[0] << ","                           //spawn_position_x
        << respawn_cord[1] << ","                           //spawn_position_y
        << respawn_cord[2] << ","                           //spawn_position_z
        << (float)(0) << ","                                //spawn_orientation
        << GetHealth() << ","                               //curhealth
        << GetPower(POWER_MANA) << ","                      //curmana

        << (uint32)(m_deathState) << ","                    // is it really death state or just state?
    //or
    //<< (uint32)(m_state) << ","                     // is it really death state or just state?

        << GetDefaultMovementType() << ","                  // default movement generator type
        << "'')";                                           // should save auras

    sDatabase.PExecuteLog( ss.str( ).c_str( ) );

    sDatabase.CommitTransaction();
}

void Corpse::SaveToDB()
{
    // prevent DB data inconsistence problems and duplicates
    SQLTransaction trans = CharacterDatabase.BeginTransaction();
    DeleteFromDB(trans);

    uint16 index = 0;
    PreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_INS_CORPSE);
    stmt->setUInt64(index++, GetOwnerGUID().GetCounter());                            // guid
    stmt->setFloat (index++, GetPositionX());                                         // posX
    stmt->setFloat (index++, GetPositionY());                                         // posY
    stmt->setFloat (index++, GetPositionZ());                                         // posZ
    stmt->setFloat (index++, GetOrientation());                                       // orientation
    stmt->setUInt16(index++, GetMapId());                                             // mapId
    stmt->setUInt32(index++, GetUInt32Value(CORPSE_FIELD_DISPLAY_ID));                // displayId
    stmt->setString(index++, _ConcatFields(CORPSE_FIELD_ITEM, EQUIPMENT_SLOT_END));   // itemCache
    stmt->setUInt32(index++, GetUInt32Value(CORPSE_FIELD_BYTES_1));                   // bytes1
    stmt->setUInt32(index++, GetUInt32Value(CORPSE_FIELD_BYTES_2));                   // bytes2
    stmt->setUInt8 (index++, GetUInt32Value(CORPSE_FIELD_FLAGS));                     // flags
    stmt->setUInt8 (index++, GetUInt32Value(CORPSE_FIELD_DYNAMIC_FLAGS));             // dynFlags
    stmt->setUInt32(index++, uint32(m_time));                                         // time
    stmt->setUInt8 (index++, GetType());                                              // corpseType
    stmt->setUInt32(index++, GetInstanceId());                                        // instanceId
    trans->Append(stmt);

    for (uint32 phaseId : GetPhases())
    {
        index = 0;
        stmt = CharacterDatabase.GetPreparedStatement(CHAR_INS_CORPSE_PHASES);
        stmt->setUInt64(index++, GetOwnerGUID().GetCounter());                        // OwnerGuid
        stmt->setUInt32(index++, phaseId);                                            // PhaseId
        trans->Append(stmt);
    }

    CharacterDatabase.CommitTransaction(trans);
}

void Transport::UpdatePosition(float x, float y, float z, float o)
{
    bool newActive = GetMap()->IsGridLoaded(x, y);
    Cell oldCell(GetPositionX(), GetPositionY());

    Relocate(x, y, z, o);
    UpdateModelPosition();

    UpdatePassengerPositions(_passengers);

    /* There are four possible scenarios that trigger loading/unloading passengers:
      1. transport moves from inactive to active grid
      2. the grid that transport is currently in becomes active
      3. transport moves from active to inactive grid
      4. the grid that transport is currently in unloads
    */
    if (_staticPassengers.empty() && newActive) // 1.
        LoadStaticPassengers();
    else if (!_staticPassengers.empty() && !newActive && oldCell.DiffGrid(Cell(GetPositionX(), GetPositionY()))) // 3.
        UnloadStaticPassengers();
    else
        UpdatePassengerPositions(_staticPassengers);
    // 4. is handed by grid unload
}

void PictureTextCBox::Draw(const Point2i &/*mousePosition*/)
{
  Surface & video_window = GetMainWindow();

  if (m_value) {
    uint enabled_x = GetPositionX() + (GetSizeX() - m_enabled.GetWidth())/2 ;
    uint enabled_y = GetPositionY();
    uint outside_x = std::max(uint(0), GetPositionX() - enabled_x);
    uint outside_y = std::max(uint(0), GetPositionY() - enabled_y);

    enabled_x += outside_x;
    enabled_y += outside_y;
    Rectanglei srcRect(outside_x, outside_y, m_enabled.GetWidth() - outside_x,
                       m_enabled.GetHeight() - outside_y);
    video_window.Blit(m_enabled, srcRect, Point2i(enabled_x, enabled_y));
  } else {
    uint disabled_x = GetPositionX() + (GetSizeX() - m_disabled_back.GetWidth())/2 ;
    uint disabled_y = GetPositionY();
    uint outside_x = std::max(uint(0), GetPositionX() - disabled_x);
    uint outside_y = std::max(uint(0), GetPositionY() - disabled_y);

    disabled_x += outside_x;
    disabled_y += outside_y;
    Rectanglei srcRect(outside_x, outside_y, m_disabled_back.GetWidth() - outside_x,
                       m_disabled_back.GetHeight() - outside_y);
    video_window.Blit(m_disabled_back, srcRect, Point2i(disabled_x, disabled_y));
  }

  // center the image
  uint tmp_x = GetPositionX() + (GetSizeX() - m_image.GetWidth())/2 ;
  uint tmp_y = GetPositionY() + (m_enabled.GetHeight() - m_image.GetHeight())/2;

  video_window.Blit(m_image, Point2i(tmp_x, tmp_y));

  Text::DrawCenterTop(GetPosition() + Point2i(GetSizeX()/2,
                      GetSizeY() - Text::GetHeight()));

  if (!m_value) {
    uint disabled_x = GetPositionX() + (GetSizeX() - m_disabled_front.GetWidth())/2 ;
    uint disabled_y = GetPositionY() + (m_enabled.GetHeight() - m_disabled_front.GetHeight())/2;
    video_window.Blit(m_disabled_front, Point2i(disabled_x, disabled_y));
  }
}

bool DynamicObject::CreateDynamicObject(ObjectGuid::LowType guidlow, Unit* caster, uint32 spellId, Position const& pos, float radius, DynamicObjectType type)
{
    SetMap(caster->GetMap());
    Relocate(pos);
    if (!IsPositionValid())
    {
        TC_LOG_ERROR("misc", "DynamicObject (spell %u) not created. Suggested coordinates isn't valid (X: %f Y: %f)", spellId, GetPositionX(), GetPositionY());
        return false;
    }

    WorldObject::_Create(guidlow, HighGuid::DynamicObject, caster->GetPhaseMask());

    SetEntry(spellId);
    SetObjectScale(1);
    SetGuidValue(DYNAMICOBJECT_CASTER, caster->GetGUID());

    // The lower word of DYNAMICOBJECT_BYTES must be 0x0001. This value means that the visual radius will be overriden
    // by client for most of the "ground patch" visual effect spells and a few "skyfall" ones like Hurricane.
    // If any other value is used, the client will _always_ use the radius provided in DYNAMICOBJECT_RADIUS, but
    // precompensation is necessary (eg radius *= 2) for many spells. Anyway, blizz sends 0x0001 for all the spells
    // I saw sniffed...
    SetByteValue(DYNAMICOBJECT_BYTES, 0, type);
    SetUInt32Value(DYNAMICOBJECT_SPELLID, spellId);
    SetFloatValue(DYNAMICOBJECT_RADIUS, radius);
    SetUInt32Value(DYNAMICOBJECT_CASTTIME, GameTime::GetGameTimeMS());

    if (IsWorldObject())
        setActive(true);    //must before add to map to be put in world container

    Transport* transport = caster->GetTransport();
    if (transport)
    {
        float x, y, z, o;
        pos.GetPosition(x, y, z, o);
        transport->CalculatePassengerOffset(x, y, z, &o);
        m_movementInfo.transport.pos.Relocate(x, y, z, o);

        // This object must be added to transport before adding to map for the client to properly display it
        transport->AddPassenger(this);
    }

    if (!GetMap()->AddToMap(this))
    {
        // Returning false will cause the object to be deleted - remove from transport
        if (transport)
            transport->RemovePassenger(this);
        return false;
    }

    return true;
}

void GameObject::Use(Unit* user)
{
    // by default spell caster is user
    Unit* spellCaster = user;
    uint32 spellId = 0;

    switch(GetGoType())
    {
        case GAMEOBJECT_TYPE_DOOR:                          //0
        case GAMEOBJECT_TYPE_BUTTON:                        //1
            //doors/buttons never really despawn, only reset to default state/flags
            UseDoorOrButton();

            // activate script
            sWorld.ScriptsStart(sGameObjectScripts, GetDBTableGUIDLow(), spellCaster, this);
            return;

        case GAMEOBJECT_TYPE_QUESTGIVER:                    //2
        {
            if(user->GetTypeId()!=TYPEID_PLAYER)
                return;

            Player* player = (Player*)user;

            player->PrepareQuestMenu( GetGUID() );
            player->SendPreparedQuest( GetGUID() );
            return;
        }
        //Sitting: Wooden bench, chairs enzz
        case GAMEOBJECT_TYPE_CHAIR:                         //7
        {
            GameObjectInfo const* info = GetGOInfo();
            if(!info)
                return;

            if(user->GetTypeId()!=TYPEID_PLAYER)
                return;

            Player* player = (Player*)user;

            // a chair may have n slots. we have to calculate their positions and teleport the player to the nearest one

            // check if the db is sane
            if(info->chair.slots > 0)
            {
                float lowestDist = DEFAULT_VISIBILITY_DISTANCE;

                float x_lowest = GetPositionX();
                float y_lowest = GetPositionY();

                // the object orientation + 1/2 pi
                // every slot will be on that straight line
                float orthogonalOrientation = GetOrientation()+M_PI*0.5f;
                // find nearest slot
                for(uint32 i=0; i<info->chair.slots; i++)
                {
                    // the distance between this slot and the center of the go - imagine a 1D space
                    float relativeDistance = (info->size*i)-(info->size*(info->chair.slots-1)/2.0f);

                    float x_i = GetPositionX() + relativeDistance * cos(orthogonalOrientation);
                    float y_i = GetPositionY() + relativeDistance * sin(orthogonalOrientation);

                    // calculate the distance between the player and this slot
                    float thisDistance = player->GetDistance2d(x_i, y_i);

                    /* debug code. It will spawn a npc on each slot to visualize them.
                    Creature* helper = player->SummonCreature(14496, x_i, y_i, GetPositionZ(), GetOrientation(), TEMPSUMMON_TIMED_OR_DEAD_DESPAWN, 10000);
                    std::ostringstream output;
                    output << i << ": thisDist: " << thisDistance;
                    helper->MonsterSay(output.str().c_str(), LANG_UNIVERSAL, 0);
                    */

                    if(thisDistance <= lowestDist)
                    {
                        lowestDist = thisDistance;
                        x_lowest = x_i;
                        y_lowest = y_i;
                    }
                }
                player->TeleportTo(GetMapId(), x_lowest, y_lowest, GetPositionZ(), GetOrientation(),TELE_TO_NOT_LEAVE_TRANSPORT | TELE_TO_NOT_LEAVE_COMBAT | TELE_TO_NOT_UNSUMMON_PET);
            }
            else
            {
                // fallback, will always work
                player->TeleportTo(GetMapId(), GetPositionX(), GetPositionY(), GetPositionZ(), GetOrientation(),TELE_TO_NOT_LEAVE_TRANSPORT | TELE_TO_NOT_LEAVE_COMBAT | TELE_TO_NOT_UNSUMMON_PET);
            }
            player->SetStandState(PLAYER_STATE_SIT_LOW_CHAIR+info->chair.height);
            return;
        }
        //big gun, its a spell/aura
        case GAMEOBJECT_TYPE_GOOBER:                        //10
        {
            GameObjectInfo const* info = GetGOInfo();

            if(user->GetTypeId()==TYPEID_PLAYER)
            {
                Player* player = (Player*)user;

                // show page
                if(info->goober.pageId)
//.........這裏部分代碼省略.........

bool DynamicObject::CreateDynamicObject(ObjectGuid::LowType guidlow, Unit* caster, SpellInfo const* spell, Position const& pos, float radius, DynamicObjectType type)
{
    SetMap(caster->GetMap());
    Relocate(pos);
    if (!IsPositionValid())
    {
        TC_LOG_ERROR("misc", "DynamicObject (spell %u) not created. Suggested coordinates isn't valid (X: %f Y: %f)", spell->Id, GetPositionX(), GetPositionY());
        return false;
    }

    WorldObject::_Create(ObjectGuid::Create<HighGuid::DynamicObject>(GetMapId(), spell->Id, guidlow));
    SetPhaseMask(caster->GetPhaseMask(), false);

    SetEntry(spell->Id);
    SetObjectScale(1.0f);
    SetGuidValue(DYNAMICOBJECT_CASTER, caster->GetGUID());
    SetUInt32Value(DYNAMICOBJECT_BYTES, spell->GetSpellVisual(GetMap()->GetDifficultyID()) | (type << 28));
    SetUInt32Value(DYNAMICOBJECT_SPELLID, spell->Id);
    SetFloatValue(DYNAMICOBJECT_RADIUS, radius);
    SetUInt32Value(DYNAMICOBJECT_CASTTIME, getMSTime());

    if (IsWorldObject())
        setActive(true);    //must before add to map to be put in world container

    Transport* transport = caster->GetTransport();
    if (transport)
    {
        float x, y, z, o;
        pos.GetPosition(x, y, z, o);
        transport->CalculatePassengerOffset(x, y, z, &o);
        m_movementInfo.transport.pos.Relocate(x, y, z, o);

        // This object must be added to transport before adding to map for the client to properly display it
        transport->AddPassenger(this);
    }

    if (!GetMap()->AddToMap(this))
    {
        // Returning false will cause the object to be deleted - remove from transport
        if (transport)
            transport->RemovePassenger(this);
        return false;
    }

    return true;
}

void BonusTile::Update()
{
    if (IsRemoved())
        return;

    if (GAME_STATE_PAUSED(sGame.GetGameState()))
    {
        Draw(animationFinished ? &imageUsed : NULL, true);
        return;
    }

    SpecialTile::Update();

    if (isUsed && animating && !animationFinished)
    {
        animating = true;

        if (movingUp)
        {
            SetPositionY(GetPositionY() - 9.0f);

            if (GetPositionY() < startPosition.y - 40.0f)
                movingUp = false;
        }
        else
        {
            SetPositionY(GetPositionY() + 9.0f);

            if (GetPositionY() >= startPosition.y)
            {
                SetPositionY(startPosition.y);
                movingUp = true;
                animating = false;
                animationFinished = true;
                sf::Texture imageCoin;
                imageCoin.loadFromFile("Graphics/Tiles/coin_gold.png");

                switch (urand(0, 1))
                {
                    case 0:
                        sGame.AddCoin(new Coin(window, sf::Vector2f(GetPositionX(), GetPositionY() - 70.0f), imageCoin));
                        break;
                    case 1:
                        sGame.AddCoin(new Coin(window, sf::Vector2f(GetPositionX(), GetPositionY() - 70.0f), imageCoin));
                        break;
                    default:
                        std::cout << "Typo in BonusTile::Update switch (urand)" << std::endl;
                        break;
                }
            }
        }
    }

    if (sf::Keyboard::isKeyPressed(sf::Keyboard::F2))
    {
        SetPosition(startPosition.x, startPosition.y);
        animationFinished = false;
        movingUp = true;
    }

    Draw(animationFinished ? &imageUsed : NULL, true);
}

bool AreaTrigger::CheckIsInPolygon2D(Position const* pos) const
{
    float testX = pos->GetPositionX();
    float testY = pos->GetPositionY();

    //this method uses the ray tracing algorithm to determine if the point is in the polygon
    bool locatedInPolygon = false;

    for (std::size_t vertex = 0; vertex < _polygonVertices.size(); ++vertex)
    {
        std::size_t nextVertex;

        //repeat loop for all sets of points
        if (vertex == (_polygonVertices.size() - 1))
        {
            //if i is the last vertex, let j be the first vertex
            nextVertex = 0;
        }
        else
        {
            //for all-else, let j=(i+1)th vertex
            nextVertex = vertex + 1;
        }

        float vertX_i = GetPositionX() + _polygonVertices[vertex].GetPositionX();
        float vertY_i = GetPositionY() + _polygonVertices[vertex].GetPositionY();
        float vertX_j = GetPositionX() + _polygonVertices[nextVertex].GetPositionX();
        float vertY_j = GetPositionY() + _polygonVertices[nextVertex].GetPositionY();

        // following statement checks if testPoint.Y is below Y-coord of i-th vertex
        bool belowLowY = vertY_i > testY;
        // following statement checks if testPoint.Y is below Y-coord of i+1-th vertex
        bool belowHighY = vertY_j > testY;

        /* following statement is true if testPoint.Y satisfies either (only one is possible)
        -->(i).Y < testPoint.Y < (i+1).Y        OR
        -->(i).Y > testPoint.Y > (i+1).Y

        (Note)
        Both of the conditions indicate that a point is located within the edges of the Y-th coordinate
        of the (i)-th and the (i+1)- th vertices of the polygon. If neither of the above
        conditions is satisfied, then it is assured that a semi-infinite horizontal line draw
        to the right from the testpoint will NOT cross the line that connects vertices i and i+1
        of the polygon
        */
        bool withinYsEdges = belowLowY != belowHighY;

        if (withinYsEdges)
        {
            // this is the slope of the line that connects vertices i and i+1 of the polygon
            float slopeOfLine = (vertX_j - vertX_i) / (vertY_j - vertY_i);

            // this looks up the x-coord of a point lying on the above line, given its y-coord
            float pointOnLine = (slopeOfLine* (testY - vertY_i)) + vertX_i;

            //checks to see if x-coord of testPoint is smaller than the point on the line with the same y-coord
            bool isLeftToLine = testX < pointOnLine;

            if (isLeftToLine)
            {
                //this statement changes true to false (and vice-versa)
                locatedInPolygon = !locatedInPolygon;
            }//end if (isLeftToLine)
        }//end if (withinYsEdges
    }

    return locatedInPolygon;
}