[7808] Move corpse search code in function with template arg for class-check. Author: Astellar

This let reuse code for other similar near corpse target selection spells.
    Also provided currently not used class-checks for 2 spells

--HG--
branch : trunk

src/game/Creature.h

@@ -650,6 +650,7 @@ class TRINITY_DLL_SPEC Creature : public Unit
         bool IsVisibleInGridForPlayer(Player const* pl) const;
 
         void RemoveCorpse();
+        bool isDeadByDefault() const { return m_isDeadByDefault; };
 
         time_t const& GetRespawnTime() const { return m_respawnTime; }
         time_t GetRespawnTimeEx() const;

src/game/GridNotifiers.h

@@ -499,6 +499,53 @@ namespace Trinity
     // CHECKS && DO classes
 
     // WorldObject check classes
+    class RaiseDeadObjectCheck
+    {
+        public:
+            RaiseDeadObjectCheck(Unit* funit, float range) : i_funit(funit), i_range(range) {}
+            bool operator()(Creature* u)
+            {
+                if (i_funit->GetTypeId()!=TYPEID_PLAYER || !((Player*)i_funit)->isHonorOrXPTarget(u) ||
+                    u->getDeathState() != CORPSE || u->isDeadByDefault() || u->isInFlight() ||
+                    ( u->GetCreatureTypeMask() & (1 << (CREATURE_TYPE_HUMANOID-1)) )==0 ||
+                    (u->GetDisplayId() != u->GetNativeDisplayId()))
+                    return false;
+
+                return i_funit->IsWithinDistInMap(u, i_range);
+            }
+            template<class NOT_INTERESTED> bool operator()(NOT_INTERESTED*) { return false; }
+        private:
+            Unit* const i_funit;
+            float i_range;
+    };
+
+    class ExplodeCorpseObjectCheck
+    {
+        public:
+            ExplodeCorpseObjectCheck(Unit* funit, float range) : i_funit(funit), i_range(range) {}
+            bool operator()(Player* u)
+            {
+                if (u->getDeathState()!=CORPSE || u->isInFlight() ||
+                    u->HasAuraType(SPELL_AURA_GHOST) || (u->GetDisplayId() != u->GetNativeDisplayId()))
+                    return false;
+
+                return i_funit->IsWithinDistInMap(u, i_range);
+            }
+            bool operator()(Creature* u)
+            {
+                if (u->getDeathState()!=CORPSE || u->isInFlight() || u->isDeadByDefault() ||
+                    (u->GetDisplayId() != u->GetNativeDisplayId()) ||
+                    (u->GetCreatureTypeMask() & CREATURE_TYPEMASK_MECHANICAL_OR_ELEMENTAL)!=0)
+                    return false;
+
+                return i_funit->IsWithinDistInMap(u, i_range);
+            }
+            template<class NOT_INTERESTED> bool operator()(NOT_INTERESTED*) { return false; }
+        private:
+            Unit* const i_funit;
+            float i_range;
+    };
+
     class CannibalizeObjectCheck
     {
         public:
@@ -508,10 +555,7 @@ namespace Trinity
                 if( i_funit->IsFriendlyTo(u) || u->isAlive() || u->isInFlight() )
                     return false;
 
-                if(i_funit->IsWithinDistInMap(u, i_range) )
+                return i_funit->IsWithinDistInMap(u, i_range);
-                    return true;
-
-                return false;
             }
             bool operator()(Corpse* u);
             bool operator()(Creature* u)
@@ -520,10 +564,7 @@ namespace Trinity
                     (u->GetCreatureTypeMask() & CREATURE_TYPEMASK_HUMANOID_OR_UNDEAD)==0)
                     return false;
 
-                if(i_funit->IsWithinDistInMap(u, i_range) )
+                return i_funit->IsWithinDistInMap(u, i_range);
-                    return true;
-
-                return false;
             }
             template<class NOT_INTERESTED> bool operator()(NOT_INTERESTED*) { return false; }
         private:

src/game/SharedDefines.h

@@ -1820,6 +1820,7 @@ enum CreatureType
 };
 
 uint32 const CREATURE_TYPEMASK_HUMANOID_OR_UNDEAD = (1 << (CREATURE_TYPE_HUMANOID-1)) | (1 << (CREATURE_TYPE_UNDEAD-1));
+uint32 const CREATURE_TYPEMASK_MECHANICAL_OR_ELEMENTAL = (1 << (CREATURE_TYPE_MECHANICAL-1)) | (1 << (CREATURE_TYPE_ELEMENTAL-1));
 
 // CreatureFamily.dbc
 enum CreatureFamily

src/game/Spell.cpp

@@ -476,6 +476,35 @@ Spell::~Spell()
     delete m_spellValue;
 }
 
+template<typename T>
+WorldObject* Spell::FindCorpseUsing()
+{
+    // non-standard target selection
+    float max_range = GetSpellMaxRange(m_spellInfo, false);
+
+    CellPair p(MaNGOS::ComputeCellPair(m_caster->GetPositionX(), m_caster->GetPositionY()));
+    Cell cell(p);
+    cell.data.Part.reserved = ALL_DISTRICT;
+    cell.SetNoCreate();
+
+    WorldObject* result = NULL;
+
+    T u_check(m_caster, max_range);
+    MaNGOS::WorldObjectSearcher<T> searcher(m_caster, result, u_check);
+
+    TypeContainerVisitor<MaNGOS::WorldObjectSearcher<T>, GridTypeMapContainer > grid_searcher(searcher);
+    CellLock<GridReadGuard> cell_lock(cell, p);
+    cell_lock->Visit(cell_lock, grid_searcher, *m_caster->GetMap());
+
+    if (!result)
+    {
+        TypeContainerVisitor<MaNGOS::WorldObjectSearcher<T>, WorldTypeMapContainer > world_searcher(searcher);
+        cell_lock->Visit(cell_lock, world_searcher, *m_caster->GetMap());
+    }
+
+    return result;
+}
+
 void Spell::FillTargetMap()
 {
     for(uint32 i = 0; i < 3; ++i)
@@ -535,17 +564,7 @@ void Spell::FillTargetMap()
                     {
                         case 20577:                         // Cannibalize
                         {
-                            // non-standard target selection
+                            WorldObject* result = FindCorpseUsing<MaNGOS::CannibalizeObjectCheck> ();
-                            SpellRangeEntry const* srange = sSpellRangeStore.LookupEntry(m_spellInfo->rangeIndex);
-                            float max_range = GetSpellMaxRangeForHostile(srange);
-                            WorldObject* result = NULL;
-
-                            Trinity::CannibalizeObjectCheck u_check(m_caster, max_range);
-                            Trinity::WorldObjectSearcher<Trinity::CannibalizeObjectCheck > searcher(m_caster, result, u_check);
-                            m_caster->VisitNearbyGridObject(max_range, searcher);
-                            if(!result)
-                                m_caster->VisitNearbyWorldObject(max_range, searcher);
-
 
                             if(result)
                             {

src/game/Spell.h

@@ -412,6 +412,8 @@ class Spell
 
         void SetTargetMap(uint32 i, uint32 cur);
 
+        template<typename T> WorldObject* FindCorpseUsing();
+
         bool CheckTarget( Unit* target, uint32 eff );
         bool CanAutoCast(Unit* target);
         void CheckSrc() { if(!m_targets.HasSrc()) m_targets.setSrc(m_caster); }