CreatureGroups.cpp

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/*
* This file is part of Project SkyFire https://www.projectskyfire.org.
* See LICENSE.md file for Copyright information
*/
 
#include "Creature.h"
#include "CreatureGroups.h"
#include "ObjectMgr.h"
 
#include "CreatureAI.h"
 
#define MAX_DESYNC 5.0f
 
FormationMgr::~FormationMgr()
{
    for (CreatureGroupInfoType::iterator itr = CreatureGroupMap.begin(); itr != CreatureGroupMap.end(); ++itr)
        delete itr->second;
}
 
void FormationMgr::AddCreatureToGroup(uint32 groupId, Creature* member)
{
    Map* map = member->FindMap();
    if (!map)
        return;
 
    CreatureGroupHolderType::iterator itr = map->CreatureGroupHolder.find(groupId);
 
    //Add member to an existing group
    if (itr != map->CreatureGroupHolder.end())
    {
        SF_LOG_DEBUG("entities.unit", "Group found: %u, inserting creature GUID: %u, Group InstanceID %u", groupId, member->GetGUIDLow(), member->GetInstanceId());
        itr->second->AddMember(member);
    }
    //Create new group
    else
    {
        SF_LOG_DEBUG("entities.unit", "Group not found: %u. Creating new group.", groupId);
        CreatureGroup* group = new CreatureGroup(groupId);
        map->CreatureGroupHolder[groupId] = group;
        group->AddMember(member);
    }
}
 
void FormationMgr::RemoveCreatureFromGroup(CreatureGroup* group, Creature* member)
{
    SF_LOG_DEBUG("entities.unit", "Deleting member pointer to GUID: %u from group %u", group->GetId(), member->GetDBTableGUIDLow());
    group->RemoveMember(member);
 
    if (group->isEmpty())
    {
        Map* map = member->FindMap();
        if (!map)
            return;
 
        SF_LOG_DEBUG("entities.unit", "Deleting group with InstanceID %u", member->GetInstanceId());
        map->CreatureGroupHolder.erase(group->GetId());
        delete group;
    }
}
 
void FormationMgr::LoadCreatureFormations()
{
    uint32 oldMSTime = getMSTime();
 
    for (CreatureGroupInfoType::iterator itr = CreatureGroupMap.begin(); itr != CreatureGroupMap.end(); ++itr) // for reload case
        delete itr->second;
    CreatureGroupMap.clear();
 
    //Get group data
    QueryResult result = WorldDatabase.Query("SELECT leaderGUID, memberGUID, dist, angle, groupAI, point_1, point_2 FROM creature_formations ORDER BY leaderGUID");
 
    if (!result)
    {
        SF_LOG_ERROR("server.loading", ">>  Loaded 0 creatures in formations. DB table `creature_formations` is empty!");
        return;
    }
 
    uint32 count = 0;
    Field* fields;
    FormationInfo* group_member;
 
    do
    {
        fields = result->Fetch();
 
        //Load group member data
        group_member = new FormationInfo();
        group_member->leaderGUID = fields[0].GetUInt32();
        uint32 memberGUID = fields[1].GetUInt32();
        group_member->groupAI = fields[4].GetUInt32();
        group_member->point_1 = fields[5].GetUInt16();
        group_member->point_2 = fields[6].GetUInt16();
        //If creature is group leader we may skip loading of dist/angle
        if (group_member->leaderGUID != memberGUID)
        {
            group_member->follow_dist = fields[2].GetFloat();
            group_member->follow_angle = fields[3].GetFloat() * M_PI / 180;
        }
        else
        {
            group_member->follow_dist = 0;
            group_member->follow_angle = 0;
        }
 
        // check data correctness
        {
            if (!sObjectMgr->GetCreatureData(group_member->leaderGUID))
            {
                SF_LOG_ERROR("sql.sql", "creature_formations table leader guid %u incorrect (not exist)", group_member->leaderGUID);
                delete group_member;
                continue;
            }
 
            if (!sObjectMgr->GetCreatureData(memberGUID))
            {
                SF_LOG_ERROR("sql.sql", "creature_formations table member guid %u incorrect (not exist)", memberGUID);
                delete group_member;
                continue;
            }
        }
 
        CreatureGroupMap[memberGUID] = group_member;
        ++count;
    } while (result->NextRow());
 
    SF_LOG_INFO("server.loading", ">> Loaded %u creatures in formations in %u ms", count, GetMSTimeDiffToNow(oldMSTime));
}
 
void CreatureGroup::AddMember(Creature* member)
{
    SF_LOG_DEBUG("entities.unit", "CreatureGroup::AddMember: Adding unit GUID: %u.", member->GetGUIDLow());
 
    //Check if it is a leader
    if (member->GetDBTableGUIDLow() == m_groupID)
    {
        SF_LOG_DEBUG("entities.unit", "Unit GUID: %u is formation leader. Adding group.", member->GetGUIDLow());
        m_leader = member;
    }
 
    m_members[member] = sFormationMgr->CreatureGroupMap.find(member->GetDBTableGUIDLow())->second;
    member->SetFormation(this);
}
 
void CreatureGroup::RemoveMember(Creature* member)
{
    if (m_leader == member)
        m_leader = NULL;
 
    m_members.erase(member);
    member->SetFormation(NULL);
}
 
void CreatureGroup::MemberAttackStart(Creature* member, Unit* target)
{
    uint8 groupAI = sFormationMgr->CreatureGroupMap[member->GetDBTableGUIDLow()]->groupAI;
    if (!groupAI)
        return;
 
    if (groupAI == 1 && member != m_leader)
        return;
 
    for (CreatureGroupMemberType::iterator itr = m_members.begin(); itr != m_members.end(); ++itr)
    {
        if (m_leader) // avoid crash if leader was killed and reset.
            SF_LOG_DEBUG("entities.unit", "GROUP ATTACK: group instance id %u calls member instid %u", m_leader->GetInstanceId(), member->GetInstanceId());
 
        Creature* other = itr->first;
 
        // Skip self
        if (other == member)
            continue;
 
        if (!other->IsAlive())
            continue;
 
        if (other->GetVictim())
            continue;
 
        if (other->IsValidAttackTarget(target))
            other->AI()->AttackStart(target);
    }
}
 
void CreatureGroup::FormationReset(bool dismiss)
{
    for (CreatureGroupMemberType::iterator itr = m_members.begin(); itr != m_members.end(); ++itr)
    {
        if (itr->first != m_leader && itr->first->IsAlive())
        {
            if (dismiss)
                itr->first->GetMotionMaster()->Initialize();
            else
                itr->first->GetMotionMaster()->MoveIdle();
            SF_LOG_DEBUG("entities.unit", "Set %s movement for member GUID: %u", dismiss ? "default" : "idle", itr->first->GetGUIDLow());
        }
    }
    m_Formed = !dismiss;
}
 
void CreatureGroup::LeaderMoveTo(float x, float y, float z)
{
    if (!m_leader)
        return;
 
    float pathangle = atan2(m_leader->GetPositionY() - y, m_leader->GetPositionX() - x);
 
    for (CreatureGroupMemberType::iterator itr = m_members.begin(); itr != m_members.end(); ++itr)
    {
        Creature* member = itr->first;
        if (member == m_leader || !member->IsAlive() || member->GetVictim())
            continue;
 
        if (itr->second->point_1)
        {
            if (m_leader->GetCurrentWaypointID() == itr->second->point_1)
                itr->second->follow_angle = (2 * M_PI) - itr->second->follow_angle;
            if (m_leader->GetCurrentWaypointID() == itr->second->point_2)
                itr->second->follow_angle = (2 * M_PI) + itr->second->follow_angle;
        }
 
        float angle = itr->second->follow_angle;
        float dist = itr->second->follow_dist;
 
        float dx = x + std::cos(angle + pathangle) * dist;
        float dy = y + std::sin(angle + pathangle) * dist;
        float dz = z;
 
        Skyfire::NormalizeMapCoord(dx);
        Skyfire::NormalizeMapCoord(dy);
 
        member->UpdateGroundPositionZ(dx, dy, dz);
 
        if (member->IsWithinDist(m_leader, dist + MAX_DESYNC))
            member->SetUnitMovementFlags(m_leader->GetUnitMovementFlags());
        else
            member->SetWalk(false);
 
        member->GetMotionMaster()->MovePoint(0, dx, dy, dz);
        member->SetHomePosition(dx, dy, dz, pathangle);
    }
}