PointMovementGenerator.cpp

Go to the documentation of this file.

/*
 * 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 "PointMovementGenerator.h"
#include "Creature.h"
#include "CreatureAI.h"
#include "G3DPosition.hpp"
#include "MotionMaster.h"
#include "MovementDefines.h"
#include "MoveSpline.h"
#include "MoveSplineInit.h"
#include "PathGenerator.h"
#include "World.h"
 
//----- Point Movement Generator
 
PointMovementGenerator::PointMovementGenerator(uint32 id, float x, float y, float z, bool generatePath, Optional<float> speed /*= {}*/, Optional<float> finalOrient /*= {}*/,
 Unit const* faceTarget /*= nullptr*/, Movement::SpellEffectExtraData const* spellEffectExtraData /*= nullptr*/,
 MovementWalkRunSpeedSelectionMode speedSelectionMode /*= MovementWalkRunSpeedSelectionMode::Default*/,
 Optional<float> closeEnoughDistance /*= {}*/)
 : _movementId(id), _destination(x, y, z), _speed(speed), _generatePath(generatePath), _finalOrient(finalOrient),
 i_faceTarget(faceTarget), _speedSelectionMode(speedSelectionMode), _closeEnoughDistance(closeEnoughDistance)
{
 this->Mode = MOTION_MODE_DEFAULT;
 this->Priority = MOTION_PRIORITY_NORMAL;
 this->Flags = MOVEMENTGENERATOR_FLAG_INITIALIZATION_PENDING;
 this->BaseUnitState = UNIT_STATE_ROAMING;
 
 if (spellEffectExtraData)
 this->i_spellEffectExtra = std::make_unique<Movement::SpellEffectExtraData>(*spellEffectExtraData);
}
 
MovementGeneratorType PointMovementGenerator::GetMovementGeneratorType() const
{
 return POINT_MOTION_TYPE;
}
 
void PointMovementGenerator::Initialize(Unit* owner)
{
 RemoveFlag(MOVEMENTGENERATOR_FLAG_INITIALIZATION_PENDING | MOVEMENTGENERATOR_FLAG_TRANSITORY | MOVEMENTGENERATOR_FLAG_DEACTIVATED);
 AddFlag(MOVEMENTGENERATOR_FLAG_INITIALIZED);
 
 if (_movementId == EVENT_CHARGE_PREPATH)
 {
 owner->AddUnitState(UNIT_STATE_ROAMING_MOVE);
 return;
 }
 
 if (owner->HasUnitState(UNIT_STATE_NOT_MOVE) || owner->IsMovementPreventedByCasting())
 {
 AddFlag(MOVEMENTGENERATOR_FLAG_INTERRUPTED);
 owner->StopMoving();
 return;
 }
 
 owner->AddUnitState(UNIT_STATE_ROAMING_MOVE);
 
 Movement::MoveSplineInit init(owner);
 [&]()
 {
 if (_generatePath)
 {
 PathGenerator path(owner);
 G3D::Vector3 dest = PositionToVector3(_destination);
 bool result = path.CalculatePath(dest.x, dest.y, dest.z, false);
 if (result && !(path.GetPathType() & PATHFIND_NOPATH))
 {
 if (_closeEnoughDistance)
 path.ShortenPathUntilDist(dest, *_closeEnoughDistance);
 
 init.MovebyPath(path.GetPath());
 return;
 }
 }
 
 Position dest = _destination;
 if (_closeEnoughDistance)
 owner->MovePosition(dest, std::min(*_closeEnoughDistance, dest.GetExactDist(owner)), float(M_PI) + owner->GetRelativeAngle(dest));
 
 init.MoveTo(dest.GetPositionX(), dest.GetPositionY(), dest.GetPositionZ(), false);
 }();
 if (_speed)
 init.SetVelocity(*_speed);
 if (i_faceTarget)
 init.SetFacing(i_faceTarget);
 if (i_spellEffectExtra)
 init.SetSpellEffectExtraData(*i_spellEffectExtra);
 if (_finalOrient)
 init.SetFacing(*_finalOrient);
 switch (_speedSelectionMode)
 {
 case MovementWalkRunSpeedSelectionMode::Default:
 break;
 case MovementWalkRunSpeedSelectionMode::ForceRun:
 init.SetWalk(false);
 break;
 case MovementWalkRunSpeedSelectionMode::ForceWalk:
 init.SetWalk(true);
 break;
 default:
 break;
 }
 
 init.Launch();
 
 // Call for creature group update
 if (Creature* creature = owner->ToCreature())
 creature->SignalFormationMovement();
}
 
void PointMovementGenerator::Reset(Unit* owner)
{
 RemoveFlag(MOVEMENTGENERATOR_FLAG_TRANSITORY | MOVEMENTGENERATOR_FLAG_DEACTIVATED);
 
 Initialize(owner);
}
 
bool PointMovementGenerator::Update(Unit* owner, uint32 /*diff*/)
{
 if (!owner)
 return false;
 
 if (_movementId == EVENT_CHARGE_PREPATH)
 {
 if (owner->movespline->Finalized())
 {
 AddFlag(MOVEMENTGENERATOR_FLAG_INFORM_ENABLED);
 return false;
 }
 return true;
 }
 
 if (owner->HasUnitState(UNIT_STATE_NOT_MOVE) || owner->IsMovementPreventedByCasting())
 {
 AddFlag(MOVEMENTGENERATOR_FLAG_INTERRUPTED);
 owner->StopMoving();
 return true;
 }
 
 if ((HasFlag(MOVEMENTGENERATOR_FLAG_INTERRUPTED) && owner->movespline->Finalized()) || (HasFlag(MOVEMENTGENERATOR_FLAG_SPEED_UPDATE_PENDING) && !owner->movespline->Finalized()))
 {
 RemoveFlag(MOVEMENTGENERATOR_FLAG_INTERRUPTED | MOVEMENTGENERATOR_FLAG_SPEED_UPDATE_PENDING);
 
 owner->AddUnitState(UNIT_STATE_ROAMING_MOVE);
 
 Movement::MoveSplineInit init(owner);
 init.MoveTo(_destination.GetPositionX(), _destination.GetPositionY(), _destination.GetPositionZ(), _generatePath);
 if (_speed) // Default value for point motion type is 0.0, if 0.0 spline will use GetSpeed on unit
 init.SetVelocity(*_speed);
 init.Launch();
 
 // Call for creature group update
 if (Creature* creature = owner->ToCreature())
 creature->SignalFormationMovement();
 }
 
 if (owner->movespline->Finalized())
 {
 RemoveFlag(MOVEMENTGENERATOR_FLAG_TRANSITORY);
 AddFlag(MOVEMENTGENERATOR_FLAG_INFORM_ENABLED);
 return false;
 }
 return true;
}
 
void PointMovementGenerator::Deactivate(Unit* owner)
{
 AddFlag(MOVEMENTGENERATOR_FLAG_DEACTIVATED);
 owner->ClearUnitState(UNIT_STATE_ROAMING_MOVE);
}
 
void PointMovementGenerator::Finalize(Unit* owner, bool active, bool movementInform)
{
 AddFlag(MOVEMENTGENERATOR_FLAG_FINALIZED);
 if (active)
 owner->ClearUnitState(UNIT_STATE_ROAMING_MOVE);
 
 if (movementInform && HasFlag(MOVEMENTGENERATOR_FLAG_INFORM_ENABLED))
 MovementInform(owner);
}
 
void PointMovementGenerator::MovementInform(Unit* owner)
{
 // deliver EVENT_CHARGE to scripts, EVENT_CHARGE_PREPATH is just internal implementation detail of this movement generator
 uint32 movementId = _movementId == EVENT_CHARGE_PREPATH ? uint32(EVENT_CHARGE) : _movementId;
 
 if (Creature* creature = owner->ToCreature())
 if (creature->AI())
 creature->AI()->MovementInform(POINT_MOTION_TYPE, movementId);
}
 
//---- AssistanceMovementGenerator
 
void AssistanceMovementGenerator::Finalize(Unit* owner, bool active, bool movementInform)
{
 AddFlag(MOVEMENTGENERATOR_FLAG_FINALIZED);
 if (active)
 owner->ClearUnitState(UNIT_STATE_ROAMING_MOVE);
 
 if (movementInform && HasFlag(MOVEMENTGENERATOR_FLAG_INFORM_ENABLED) && owner->IsCreature())
 {
 Creature* ownerCreature = owner->ToCreature();
 ownerCreature->SetNoCallAssistance(false);
 ownerCreature->CallAssistance();
 if (ownerCreature->IsAlive())
 ownerCreature->GetMotionMaster()->MoveSeekAssistanceDistract(sWorld->getIntConfig(CONFIG_CREATURE_FAMILY_ASSISTANCE_DELAY));
 }
}
 
MovementGeneratorType AssistanceMovementGenerator::GetMovementGeneratorType() const
{
 return ASSISTANCE_MOTION_TYPE;
}