Core/AI: Added new method for search friendly targets with certain entry and hp pct below a value (#18310)

(cherry picked from commit e7024f8a4c514eb4d8466383f8b5367ad7bab630)

3 files changed, 35 insertions, 48 deletions

diff --git a/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp b/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
index f6462e7f842..f937c32c0a3 100644
--- a/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
+++ b/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
@@ -360,6 +360,16 @@ Unit* ScriptedAI::DoSelectLowestHpFriendly(float range, uint32 minHPDiff)
     return unit;
 }
 
+Unit* ScriptedAI::DoSelectBelowHpPctFriendlyWithEntry(uint32 entry, float range, uint8 minHPDiff, bool excludeSelf)
+{
+    Unit* unit = nullptr;
+    Trinity::FriendlyBelowHpPctEntryInRange u_check(me, entry, range, minHPDiff, excludeSelf);
+    Trinity::UnitLastSearcher<Trinity::FriendlyBelowHpPctEntryInRange> searcher(me, unit, u_check);
+    Cell::VisitAllObjects(me, searcher, range);
+
+    return unit;
+}
+
 std::list<Creature*> ScriptedAI::DoFindFriendlyCC(float range)
 {
     std::list<Creature*> list;
@@ -422,54 +432,6 @@ enum NPCs
     NPC_SARTHARION  = 28860
 };
 
-// Hacklike storage used for misc creatures that are expected to evade of outside of a certain area.
-// It is assumed the information is found elswehere and can be handled by the core. So far no luck finding such information/way to extract it.
-/*bool ScriptedAI::EnterEvadeIfOutOfCombatArea(uint32 const diff)
-{
-    if (_evadeCheckCooldown <= diff)
-        _evadeCheckCooldown = 2500;
-    else
-    {
-        _evadeCheckCooldown -= diff;
-        return false;
-    }
-
-    if (me->IsInEvadeMode() || !me->GetVictim())
-        return false;
-
-    float x = me->GetPositionX();
-    float y = me->GetPositionY();
-    float z = me->GetPositionZ();
-
-    switch (me->GetEntry())
-    {
-        case NPC_BROODLORD:                                         // broodlord (not move down stairs)
-            if (z > 448.60f)
-                return false;
-            break;
-        case NPC_VOID_REAVER:                                         // void reaver (calculate from center of room)
-            if (me->GetDistance2d(432.59f, 371.93f) < 105.0f)
-                return false;
-            break;
-        case NPC_JAN_ALAI:                                         // jan'alai (calculate by Z)
-            if (z > 12.0f)
-                return false;
-            break;
-        case NPC_SARTHARION:                                         // sartharion (calculate box)
-            if (x > 3218.86f && x < 3275.69f && y < 572.40f && y > 484.68f)
-                return false;
-            break;
-        default: // For most of creatures that certain area is their home area.
-            TC_LOG_INFO("misc", "TSCR: EnterEvadeIfOutOfCombatArea used for creature entry %u, but does not have any definition. Using the default one.", me->GetEntry());
-            uint32 homeAreaId = me->GetMap()->GetAreaId(me->GetHomePosition().GetPositionX(), me->GetHomePosition().GetPositionY(), me->GetHomePosition().GetPositionZ());
-            if (me->GetAreaId() == homeAreaId)
-                return false;
-    }
-
-    EnterEvadeMode();
-    return true;
-}*/
-
 // BossAI - for instanced bosses
 BossAI::BossAI(Creature* creature, uint32 bossId) : ScriptedAI(creature),
     instance(creature->GetInstanceScript()),
diff --git a/src/server/game/AI/ScriptedAI/ScriptedCreature.h b/src/server/game/AI/ScriptedAI/ScriptedCreature.h
index 4ffde824307..6b0e853e6cc 100644
--- a/src/server/game/AI/ScriptedAI/ScriptedCreature.h
+++ b/src/server/game/AI/ScriptedAI/ScriptedCreature.h
@@ -223,6 +223,9 @@ struct TC_GAME_API ScriptedAI : public CreatureAI
     //Returns friendly unit with the most amount of hp missing from max hp
     Unit* DoSelectLowestHpFriendly(float range, uint32 minHPDiff = 1);
 
+    //Returns friendly unit with hp pct below specified and with specified entry
+    Unit* DoSelectBelowHpPctFriendlyWithEntry(uint32 entry, float range, uint8 hpPct = 1, bool excludeSelf = true);
+
     //Returns a list of friendly CC'd units within range
     std::list<Creature*> DoFindFriendlyCC(float range);
 
diff --git a/src/server/game/Grids/Notifiers/GridNotifiers.h b/src/server/game/Grids/Notifiers/GridNotifiers.h
index f2611edab14..4635f16042a 100644
--- a/src/server/game/Grids/Notifiers/GridNotifiers.h
+++ b/src/server/game/Grids/Notifiers/GridNotifiers.h
@@ -804,6 +804,28 @@ namespace Trinity
             uint64 i_hp;
     };
 
+    class FriendlyBelowHpPctEntryInRange
+    {
+        public:
+            FriendlyBelowHpPctEntryInRange(Unit const* obj, uint32 entry, float range, uint8 pct, bool excludeSelf) : i_obj(obj), i_entry(entry), i_range(range), i_pct(pct), i_excludeSelf(excludeSelf) { }
+
+            bool operator()(Unit* u)
+            {
+                if (i_excludeSelf && i_obj->GetGUID() == u->GetGUID())
+                    return false;
+                if (u->GetEntry() == i_entry && u->IsAlive() && u->IsInCombat() && !i_obj->IsHostileTo(u) && i_obj->IsWithinDistInMap(u, i_range) && u->HealthBelowPct(i_pct))
+                    return true;
+                return false;
+            }
+
+        private:
+            Unit const* i_obj;
+            uint32 i_entry;
+            float i_range;
+            uint8 i_pct;
+            bool i_excludeSelf;
+    };
+
     class FriendlyCCedInRange
     {
         public: