ConfusedMovementGenerator.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 "ConfusedMovementGenerator.h"
#include "Creature.h"
#include "MovementDefines.h"
#include "MoveSpline.h"
#include "MoveSplineInit.h"
#include "PathGenerator.h"
#include "Player.h"
#include "Random.h"
 
template<class T>
ConfusedMovementGenerator<T>::ConfusedMovementGenerator() : _timer(0), _reference(0.f, 0.f, 0.f)
{
 this->Mode = MOTION_MODE_DEFAULT;
 this->Priority = MOTION_PRIORITY_HIGHEST;
 this->Flags = MOVEMENTGENERATOR_FLAG_INITIALIZATION_PENDING;
 this->BaseUnitState = UNIT_STATE_CONFUSED;
}
 
template<class T>
MovementGeneratorType ConfusedMovementGenerator<T>::GetMovementGeneratorType() const
{
 return CONFUSED_MOTION_TYPE;
}
 
template<class T>
void ConfusedMovementGenerator<T>::DoInitialize(T* owner)
{
 MovementGenerator::RemoveFlag(MOVEMENTGENERATOR_FLAG_INITIALIZATION_PENDING | MOVEMENTGENERATOR_FLAG_TRANSITORY | MOVEMENTGENERATOR_FLAG_DEACTIVATED);
 MovementGenerator::AddFlag(MOVEMENTGENERATOR_FLAG_INITIALIZED);
 
 if (!owner || !owner->IsAlive())
 return;
 
 // TODO: UNIT_FIELD_FLAGS should not be handled by generators
 owner->SetUnitFlag(UNIT_FLAG_CONFUSED);
 owner->StopMoving();
 
 _timer.Reset(0);
 owner->GetPosition(_reference.m_positionX, _reference.m_positionY, _reference.m_positionZ);
 _path = nullptr;
}
 
template<class T>
void ConfusedMovementGenerator<T>::DoReset(T* owner)
{
 MovementGenerator::RemoveFlag(MOVEMENTGENERATOR_FLAG_TRANSITORY | MOVEMENTGENERATOR_FLAG_DEACTIVATED);
 
 DoInitialize(owner);
}
 
template<class T>
bool ConfusedMovementGenerator<T>::DoUpdate(T* owner, uint32 diff)
{
 if (!owner || !owner->IsAlive())
 return false;
 
 if (owner->HasUnitState(UNIT_STATE_NOT_MOVE) || owner->IsMovementPreventedByCasting())
 {
 MovementGenerator::AddFlag(MOVEMENTGENERATOR_FLAG_INTERRUPTED);
 owner->StopMoving();
 _path = nullptr;
 return true;
 }
 else
 MovementGenerator::RemoveFlag(MOVEMENTGENERATOR_FLAG_INTERRUPTED);
 
 // waiting for next move
 _timer.Update(diff);
 if ((MovementGenerator::HasFlag(MOVEMENTGENERATOR_FLAG_SPEED_UPDATE_PENDING) && !owner->movespline->Finalized()) || (_timer.Passed() && owner->movespline->Finalized()))
 {
 MovementGenerator::RemoveFlag(MOVEMENTGENERATOR_FLAG_TRANSITORY);
 
 Position destination(_reference);
 float distance = 4.0f * frand(0.0f, 1.0f) - 2.0f;
 float angle = frand(0.0f, 1.0f) * float(M_PI) * 2.0f;
 owner->MovePositionToFirstCollision(destination, distance, angle);
 
 // Check if the destination is in LOS
 if (!owner->IsWithinLOS(destination.GetPositionX(), destination.GetPositionY(), destination.GetPositionZ()))
 {
 // Retry later on
 _timer.Reset(200);
 return true;
 }
 
 if (!_path)
 {
 _path = std::make_unique<PathGenerator>(owner);
 _path->SetPathLengthLimit(30.0f);
 }
 
 bool result = _path->CalculatePath(destination.GetPositionX(), destination.GetPositionY(), destination.GetPositionZ());
 if (!result || (_path->GetPathType() & PATHFIND_NOPATH)
 || (_path->GetPathType() & PATHFIND_SHORTCUT)
 || (_path->GetPathType() & PATHFIND_FARFROMPOLY))
 {
 _timer.Reset(100);
 return true;
 }
 
 owner->AddUnitState(UNIT_STATE_CONFUSED_MOVE);
 
 Movement::MoveSplineInit init(owner);
 init.MovebyPath(_path->GetPath());
 init.SetWalk(true);
 int32 traveltime = init.Launch();
 _timer.Reset(traveltime + urand(800, 1500));
 }
 
 return true;
}
 
template<class T>
void ConfusedMovementGenerator<T>::DoDeactivate(T* owner)
{
 MovementGenerator::AddFlag(MOVEMENTGENERATOR_FLAG_DEACTIVATED);
 owner->ClearUnitState(UNIT_STATE_CONFUSED_MOVE);
}
 
template<class T>
void ConfusedMovementGenerator<T>::DoFinalize(T*, bool, bool) { }
 
template<>
void ConfusedMovementGenerator<Player>::DoFinalize(Player* owner, bool active, bool/* movementInform*/)
{
 AddFlag(MOVEMENTGENERATOR_FLAG_FINALIZED);
 
 if (active)
 {
 owner->RemoveUnitFlag(UNIT_FLAG_CONFUSED);
 owner->StopMoving();
 }
}
 
template<>
void ConfusedMovementGenerator<Creature>::DoFinalize(Creature* owner, bool active, bool/* movementInform*/)
{
 AddFlag(MOVEMENTGENERATOR_FLAG_FINALIZED);
 
 if (active)
 {
 owner->RemoveUnitFlag(UNIT_FLAG_CONFUSED);
 owner->ClearUnitState(UNIT_STATE_CONFUSED_MOVE);
 if (owner->GetVictim())
 owner->SetTarget(owner->EnsureVictim()->GetGUID());
 }
}
 
template ConfusedMovementGenerator<Player>::ConfusedMovementGenerator();
template ConfusedMovementGenerator<Creature>::ConfusedMovementGenerator();
template MovementGeneratorType ConfusedMovementGenerator<Player>::GetMovementGeneratorType() const;
template MovementGeneratorType ConfusedMovementGenerator<Creature>::GetMovementGeneratorType() const;
template void ConfusedMovementGenerator<Player>::DoInitialize(Player*);
template void ConfusedMovementGenerator<Creature>::DoInitialize(Creature*);
template void ConfusedMovementGenerator<Player>::DoReset(Player*);
template void ConfusedMovementGenerator<Creature>::DoReset(Creature*);
template bool ConfusedMovementGenerator<Player>::DoUpdate(Player*, uint32);
template bool ConfusedMovementGenerator<Creature>::DoUpdate(Creature*, uint32);
template void ConfusedMovementGenerator<Player>::DoDeactivate(Player*);
template void ConfusedMovementGenerator<Creature>::DoDeactivate(Creature*);