HomeMovementGenerator.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * 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 (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 "HomeMovementGenerator.h"
#include "Creature.h"
#include "CreatureAI.h"
#include "G3DPosition.hpp"
#include "MotionMaster.h"
#include "MovementDefines.h"
#include "MoveSpline.h"
#include "MoveSplineInit.h"
#include "Vehicle.h"
 
template<class T>
HomeMovementGenerator<T>::HomeMovementGenerator()
{
    this->Priority = MOTION_PRIORITY_NORMAL;
    this->Flags = MOVEMENTGENERATOR_FLAG_INITIALIZATION_PENDING;
    this->BaseUnitState = UNIT_STATE_ROAMING;
}
 
template HomeMovementGenerator<Creature>::HomeMovementGenerator();
 
template<class T>
MovementGeneratorType HomeMovementGenerator<T>::GetMovementGeneratorType() const
{
    return HOME_MOTION_TYPE;
}
 
template MovementGeneratorType HomeMovementGenerator<Creature>::GetMovementGeneratorType() const;
 
template<class T>
void HomeMovementGenerator<T>::SetTargetLocation(T*) { }
 
template<>
void HomeMovementGenerator<Creature>::SetTargetLocation(Creature* owner)
{
    // if we are ROOT/STUNNED/DISTRACTED even after aura clear, finalize on next update - otherwise we would get stuck in evade
    if (owner->HasUnitState(UNIT_STATE_ROOT | UNIT_STATE_STUNNED | UNIT_STATE_DISTRACTED))
    {
        AddFlag(MOVEMENTGENERATOR_FLAG_INTERRUPTED);
        return;
    }
 
    owner->ClearUnitState(UNIT_STATE_ALL_ERASABLE & ~UNIT_STATE_EVADE);
    owner->AddUnitState(UNIT_STATE_ROAMING_MOVE);
 
    Position destination = owner->GetHomePosition();
    Movement::MoveSplineInit init(owner);
 
    /*
     * TODO: maybe this never worked, who knows, top is always this generator, so this code calls GetResetPosition on itself
     *
     * if (owner->GetMotionMaster()->empty() || !owner->GetMotionMaster()->top()->GetResetPosition(owner, x, y, z))
     * {
     *     owner->GetHomePosition(x, y, z, o);
     *     init.SetFacing(o);
     * }
     */
 
    owner->UpdateAllowedPositionZ(destination.m_positionX, destination.m_positionY, destination.m_positionZ);
    init.MoveTo(PositionToVector3(destination), true, true);
    init.SetFacing(destination.GetOrientation());
    init.SetWalk(false);
    init.Launch();
}
 
template<class T>
bool HomeMovementGenerator<T>::DoInitialize(T*) { return false; }
 
template<>
bool HomeMovementGenerator<Creature>::DoInitialize(Creature* owner)
{
    RemoveFlag(MOVEMENTGENERATOR_FLAG_INITIALIZATION_PENDING | MOVEMENTGENERATOR_FLAG_DEACTIVATED);
    AddFlag(MOVEMENTGENERATOR_FLAG_INITIALIZED);
 
    owner->SetNoSearchAssistance(false);
 
    SetTargetLocation(owner);
    return true;
}
 
template<class T>
bool HomeMovementGenerator<T>::DoReset(T*) { return false; }
 
template<>
bool HomeMovementGenerator<Creature>::DoReset(Creature* owner)
{
    RemoveFlag(MOVEMENTGENERATOR_FLAG_DEACTIVATED);
 
    return DoInitialize(owner);
}
 
template<class T>
bool HomeMovementGenerator<T>::DoUpdate(T*, uint32)
{
    return false;
}
 
template<>
bool HomeMovementGenerator<Creature>::DoUpdate(Creature* owner, uint32 /*diff*/)
{
    if (HasFlag(MOVEMENTGENERATOR_FLAG_INTERRUPTED) || owner->movespline->Finalized())
    {
        AddFlag(MOVEMENTGENERATOR_FLAG_INFORM_ENABLED);
        return false;
    }
    return true;
}
 
template<class T>
void HomeMovementGenerator<T>::DoDeactivate(T*) { }
 
template<>
void HomeMovementGenerator<Creature>::DoDeactivate(Creature* owner)
{
    AddFlag(MOVEMENTGENERATOR_FLAG_DEACTIVATED);
    owner->ClearUnitState(UNIT_STATE_ROAMING_MOVE);
}
 
template<class T>
void HomeMovementGenerator<T>::DoFinalize(T*, bool, bool) { }
 
template<>
void HomeMovementGenerator<Creature>::DoFinalize(Creature* owner, bool active, bool movementInform)
{
    AddFlag(MOVEMENTGENERATOR_FLAG_FINALIZED);
    if (active)
        owner->ClearUnitState(UNIT_STATE_ROAMING_MOVE | UNIT_STATE_EVADE);
 
    if (movementInform && HasFlag(MOVEMENTGENERATOR_FLAG_INFORM_ENABLED))
    {
        if (!owner->HasCanSwimFlagOutOfCombat())
            owner->RemoveUnitFlag(UNIT_FLAG_CAN_SWIM);
 
        owner->SetSpawnHealth();
        owner->LoadCreaturesAddon();
        if (owner->IsVehicle())
            owner->GetVehicleKit()->Reset(true);
        owner->AI()->JustReachedHome();
    }
}