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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/>.
*/
#ifndef _FORMATIONS_H
#define _FORMATIONS_H
#include "Define.h"
#include "ObjectGuid.h"
#include <unordered_map>
enum GroupAIFlags
{
FLAG_AGGRO_NONE = 0, // No creature group behavior
FLAG_MEMBERS_ASSIST_LEADER = 0x00000001, // The member aggroes if the leader aggroes
FLAG_LEADER_ASSISTS_MEMBER = 0x00000002, // The leader aggroes if the member aggroes
FLAG_MEMBERS_ASSIST_MEMBER = (FLAG_MEMBERS_ASSIST_LEADER | FLAG_LEADER_ASSISTS_MEMBER), // every member will assist if any member is attacked
FLAG_IDLE_IN_FORMATION = 0x00000200, // The member will follow the leader when pathing idly
};
class Creature;
class CreatureGroup;
class Unit;
struct Position;
struct FormationInfo
{
ObjectGuid::LowType LeaderSpawnId;
float FollowDist;
float FollowAngle;
uint32 GroupAI;
uint32 LeaderWaypointIDs[2];
};
class TC_GAME_API FormationMgr
{
private:
FormationMgr();
~FormationMgr();
std::unordered_map<ObjectGuid::LowType /*spawnID*/, FormationInfo> _creatureGroupMap;
public:
FormationMgr(FormationMgr const&) = delete;
FormationMgr(FormationMgr&&) = delete;
FormationMgr& operator=(FormationMgr const&) = delete;
FormationMgr& operator=(FormationMgr&&) = delete;
static FormationMgr* instance();
static void AddCreatureToGroup(ObjectGuid::LowType leaderSpawnId, Creature* creature);
static void RemoveCreatureFromGroup(CreatureGroup* group, Creature* member);
void LoadCreatureFormations();
FormationInfo* GetFormationInfo(ObjectGuid::LowType spawnId);
void AddFormationMember(ObjectGuid::LowType spawnId, float followAng, float followDist, ObjectGuid::LowType leaderSpawnId, uint32 groupAI);
};
class TC_GAME_API CreatureGroup
{
private:
Creature* _leader;
using MembersMap = std::unordered_map<Creature*, FormationInfo*>;
MembersMap _members;
ObjectGuid::LowType _leaderSpawnId;
bool _formed;
bool _engaging;
public:
//Group cannot be created empty
explicit CreatureGroup(ObjectGuid::LowType leaderSpawnId);
CreatureGroup(CreatureGroup const&) = delete;
CreatureGroup(CreatureGroup&&) = delete;
CreatureGroup& operator=(CreatureGroup const&) = delete;
CreatureGroup& operator=(CreatureGroup&&) = delete;
~CreatureGroup();
Creature* GetLeader() const { return _leader; }
ObjectGuid::LowType GetLeaderSpawnId() const { return _leaderSpawnId; }
bool IsEmpty() const { return _members.empty(); }
bool IsFormed() const { return _formed; }
bool IsLeader(Creature const* creature) const { return _leader == creature; }
bool HasMember(Creature* member) const { return _members.contains(member); }
void AddMember(Creature* member);
void RemoveMember(Creature* member);
void FormationReset(bool dismiss);
void LeaderStartedMoving();
void MemberEngagingTarget(Creature* member, Unit* target);
bool CanLeaderStartMoving() const;
bool HasAliveMembers() const;
bool LeaderHasStringId(std::string_view id) const;
};
#define sFormationMgr FormationMgr::instance()
#endif
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