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135 lines
4.5 KiB
C++
135 lines
4.5 KiB
C++
/**
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* MaNGOS is a full featured server for World of Warcraft, supporting
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* the following clients: 1.12.x, 2.4.3, 3.3.5a, 4.3.4a and 5.4.8
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*
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* Copyright (C) 2005-2017 MaNGOS project <https://getmangos.eu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* World of Warcraft, and all World of Warcraft or Warcraft art, images,
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* and lore are copyrighted by Blizzard Entertainment, Inc.
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*/
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#ifndef MANGOS_TARGETEDMOVEMENTGENERATOR_H
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#define MANGOS_TARGETEDMOVEMENTGENERATOR_H
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#include "MovementGenerator.h"
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#include "FollowerReference.h"
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class PathFinder;
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class TargetedMovementGeneratorBase
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{
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public:
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TargetedMovementGeneratorBase(Unit& target) { i_target.link(&target, this); }
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void stopFollowing() { }
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protected:
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FollowerReference i_target;
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};
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template<class T, typename D>
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class TargetedMovementGeneratorMedium
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: public MovementGeneratorMedium< T, D >, public TargetedMovementGeneratorBase
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{
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protected:
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TargetedMovementGeneratorMedium(Unit& target, float offset, float angle) :
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TargetedMovementGeneratorBase(target),
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i_recheckDistance(0),
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i_offset(offset), i_angle(angle),
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m_speedChanged(false), i_targetReached(false),
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i_path(NULL)
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{
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}
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~TargetedMovementGeneratorMedium() { delete i_path; }
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public:
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bool Update(T&, const uint32&);
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bool IsReachable() const;
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Unit* GetTarget() const { return i_target.getTarget(); }
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void unitSpeedChanged() { m_speedChanged = true; }
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protected:
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void _setTargetLocation(T&, bool updateDestination);
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bool RequiresNewPosition(T& owner, float x, float y, float z) const;
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virtual float GetDynamicTargetDistance(T& owner, bool forRangeCheck) const { return i_offset; }
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ShortTimeTracker i_recheckDistance;
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float i_offset;
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float i_angle;
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bool m_speedChanged : 1;
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bool i_targetReached : 1;
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PathFinder* i_path;
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};
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template<class T>
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class ChaseMovementGenerator : public TargetedMovementGeneratorMedium<T, ChaseMovementGenerator<T> >
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{
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public:
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ChaseMovementGenerator(Unit& target, float offset, float angle)
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: TargetedMovementGeneratorMedium<T, ChaseMovementGenerator<T> >(target, offset, angle) {}
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~ChaseMovementGenerator() {}
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MovementGeneratorType GetMovementGeneratorType() const override { return CHASE_MOTION_TYPE; }
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void Initialize(T&);
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void Finalize(T&);
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void Interrupt(T&);
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void Reset(T&);
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static void _clearUnitStateMove(T& u);
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static void _addUnitStateMove(T& u);
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bool EnableWalking() const { return false;}
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bool _lostTarget(T& u) const;
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void _reachTarget(T&);
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protected:
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float GetDynamicTargetDistance(T& owner, bool forRangeCheck) const override;
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};
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template<class T>
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class FollowMovementGenerator : public TargetedMovementGeneratorMedium<T, FollowMovementGenerator<T> >
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{
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public:
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FollowMovementGenerator(Unit& target)
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: TargetedMovementGeneratorMedium<T, FollowMovementGenerator<T> >(target) {}
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FollowMovementGenerator(Unit& target, float offset, float angle)
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: TargetedMovementGeneratorMedium<T, FollowMovementGenerator<T> >(target, offset, angle) {}
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~FollowMovementGenerator() {}
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MovementGeneratorType GetMovementGeneratorType() const override { return FOLLOW_MOTION_TYPE; }
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void Initialize(T&);
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void Finalize(T&);
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void Interrupt(T&);
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void Reset(T&);
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static void _clearUnitStateMove(T& u);
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static void _addUnitStateMove(T& u);
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bool EnableWalking() const;
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bool _lostTarget(T&) const { return false; }
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void _reachTarget(T&) {}
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private:
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void _updateSpeed(T& u);
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protected:
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float GetDynamicTargetDistance(T& owner, bool forRangeCheck) const override;
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};
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#endif
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