Core/SpellScripts: rename GetTarget*() functions to GetExplTarget*(), so the names reflect better what those functions do. Also update some comments.

src/server/game/Spells/SpellScript.cpp

@@ -320,29 +320,34 @@ SpellInfo const* SpellScript::GetSpellInfo()
     return m_spell->GetSpellInfo();
 }
 
-WorldLocation const* SpellScript::GetTargetDest()
+WorldLocation const* SpellScript::GetExplTargetDest()
 {
     if (m_spell->m_targets.HasDst())
         return m_spell->m_targets.GetDstPos();
     return NULL;
 }
 
-void SpellScript::SetTargetDest(WorldLocation& loc)
+void SpellScript::SetExplTargetDest(WorldLocation& loc)
 {
     m_spell->m_targets.SetDst(loc);
 }
 
-Unit* SpellScript::GetTargetUnit()
+Unit* SpellScript::GetExplTargetWorldObject()
+{
+    return m_spell->m_targets.GetObjectTarget();
+}
+
+Unit* SpellScript::GetExplTargetUnit()
 {
     return m_spell->m_targets.GetUnitTarget();
 }
 
-GameObject* SpellScript::GetTargetGObj()
+GameObject* SpellScript::GetExplTargetGObj()
 {
     return m_spell->m_targets.GetGOTarget();
 }
 
-Item* SpellScript::GetTargetItem()
+Item* SpellScript::GetExplTargetItem()
 {
     return m_spell->m_targets.GetItemTarget();
 }

src/server/game/Spells/SpellScript.h

@@ -295,25 +295,35 @@ class SpellScript : public _SpellScript
         SpellInfo const* GetSpellInfo();
         SpellValue const* GetSpellValue();
 
-        // methods useable after spell targets are set
-        // accessors to the "focus" targets of the spell
-        // note: do not confuse these with spell hit targets
+        // methods useable after spell is prepared
+        // accessors to the explicit targets of the spell
+        // explicit target - target selected by caster (player, game client, or script - DoCast(explicitTarget, ...), required for spell to be cast
+        // examples:
+        // -shadowstep - explicit target is the unit you want to go behind of
+        // -chain heal - explicit target is the unit to be healed first
+        // -holy nova/arcane explosion - explicit target = NULL because target you are selecting doesn't affect how spell targets are selected
+        // you can determine if spell requires explicit targets by dbc columns: 
+        // - Targets - mask of explicit target types
+        // - ImplicitTargetXX set to TARGET_XXX_TARGET_YYY, _TARGET_ here means that explicit target is used by the effect, so spell needs one too
+
         // returns: WorldLocation which was selected as a spell destination or NULL
-        WorldLocation const* GetTargetDest();
+        WorldLocation const* GetExplTargetDest();
 
-        void SetTargetDest(WorldLocation& loc);
+        void SetExplTargetDest(WorldLocation& loc);
 
-        // returns: Unit which was selected as a spell target or NULL
-        Unit* GetTargetUnit();
+        // returns: WorldObject which was selected as an explicit spell target or NULL if there's no target
+        WorldObject* GetExplTargetWorldObject();
 
-        // returns: GameObject which was selected as a spell target or NULL
-        GameObject* GetTargetGObj();
+        // returns: Unit which was selected as an explicit spell target or NULL if there's no target
+        Unit* GetExplTargetUnit();
 
-        // returns: Item which was selected as a spell target or NULL
-        Item* GetTargetItem();
+        // returns: GameObject which was selected as an explicit spell target or NULL if there's no target
+        GameObject* GetExplTargetGObj();
+
+        // returns: Item which was selected as an explicit spell target or NULL if there's no target
+        Item* GetExplTargetItem();
 
         // methods useable only during spell hit on target, or during spell launch on target:
-
         // returns: target of current effect if it was Unit otherwise NULL
         Unit* GetHitUnit();
         // returns: target of current effect if it was Creature otherwise NULL