[7365] Implement potion in combat delay proper work.

Original patch provided by miranda.conrado.

src/game/Player.cpp

@@ -420,6 +420,8 @@ Player::Player (WorldSession *session): Unit(), m_achievementMgr(this)
     m_InstanceValid = true;
     m_dungeonDifficulty = DIFFICULTY_NORMAL;
 
+    m_lastPotionId = 0;
+
     for (int i = 0; i < BASEMOD_END; i++)
     {
         m_auraBaseMod[i][FLAT_MOD] = 0.0f;
@@ -17750,6 +17752,30 @@ void Player::SendCooldownEvent(SpellEntry const *spellInfo, uint32 itemId, Spell
     data << GetGUID();
     SendDirectMessage(&data);
 }
+
+void Player::UpdatePotionCooldown(Spell* spell)
+{
+    // no potion used i combat or still in combat
+    if(!m_lastPotionId || isInCombat())
+        return;
+
+    // Call not from spell cast, send cooldown event for item spells if no in combat
+    if(!spell)
+    {
+        // spell/item pair let set proper cooldown (except not existed charged spell cooldown spellmods for potions)
+        if(ItemPrototype const* proto = ObjectMgr::GetItemPrototype(m_lastPotionId))
+            for(int idx = 0; idx < 5; ++idx)
+                if(proto->Spells[idx].SpellId && proto->Spells[idx].SpellTrigger == ITEM_SPELLTRIGGER_ON_USE)
+                    if(SpellEntry const* spellInfo = sSpellStore.LookupEntry(proto->Spells[idx].SpellId))
+                        SendCooldownEvent(spellInfo,m_lastPotionId);
+    }
+    // from spell cases (m_lastPotionId set in Spell::SendSpellCooldown)
+    else
+        SendCooldownEvent(spell->m_spellInfo,m_lastPotionId,spell);
+
+    m_lastPotionId = 0;
+}
+
                                                            //slot to be excluded while counting
 bool Player::EnchantmentFitsRequirements(uint32 enchantmentcondition, int8 slot)
 {

src/game/Player.h

@@ -1500,6 +1500,8 @@ class MANGOS_DLL_SPEC Player : public Unit
         void RemoveAllSpellCooldown();
         void _LoadSpellCooldowns(QueryResult *result);
         void _SaveSpellCooldowns();
+        void SetLastPotionId(uint32 item_id) { m_lastPotionId = item_id; }
+        void UpdatePotionCooldown(Spell* spell = NULL);
 
         void setResurrectRequestData(uint64 guid, uint32 mapId, float X, float Y, float Z, uint32 health, uint32 mana)
         {
@@ -2276,6 +2278,7 @@ class MANGOS_DLL_SPEC Player : public Unit
         PlayerMails m_mail;
         PlayerSpellMap m_spells;
         SpellCooldowns m_spellCooldowns;
+        uint32 m_lastPotionId;                              // last used health/mana potion in combat, that block next potion use
 
         ActionButtonList m_actionButtons;
 

src/game/Spell.cpp

@@ -2521,6 +2521,15 @@ void Spell::SendSpellCooldown()
 
     Player* _player = (Player*)m_caster;
 
+    // mana/health potions, disabled by client
+    if (m_spellInfo->Category==SPELLCATEGORY_HEALTH_MANA_POTIONS)
+    {
+        // need in some way provided data for Spell::finish SendCooldownEvent
+        if(m_CastItem)
+            _player->SetLastPotionId(m_CastItem->GetEntry());
+        return;
+    }
+
     // have infinity cooldown but set at aura apply
     if(m_spellInfo->Attributes & SPELL_ATTR_DISABLED_WHILE_ACTIVE)
         return;
@@ -2716,6 +2725,10 @@ void Spell::finish(bool ok)
             ((Player*)m_caster)->ClearComboPoints();
     }
 
+    // mana/health potions, disabled by client, send event "not in combat"
+    if (m_caster->GetTypeId() == TYPEID_PLAYER && m_spellInfo->Category == SPELLCATEGORY_HEALTH_MANA_POTIONS)
+        ((Player*)m_caster)->UpdatePotionCooldown(this);
+
     // call triggered spell only at successful cast (after clear combo points -> for add some if need)
     if(!m_TriggerSpells.empty())
         TriggerSpell();

src/game/Unit.cpp

@@ -8597,6 +8597,8 @@ void Unit::ClearInCombat()
     // Player's state will be cleared in Player::UpdateContestedPvP
     if(GetTypeId()!=TYPEID_PLAYER)
         clearUnitState(UNIT_STAT_ATTACK_PLAYER);
+    else
+        ((Player*)this)->UpdatePotionCooldown();
 }
 
 bool Unit::isTargetableForAttack() const

src/shared/revision_nr.h

@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "7364"
+ #define REVISION_NR "7365"
 #endif // __REVISION_NR_H__