From 04d1bdf69c03f4a937ba3cf6e6e58673e5032f5a Mon Sep 17 00:00:00 2001
From: Cron <vertozor@gmail.com>
Date: Fri, 26 Aug 2011 10:33:41 -0300
Subject: Core/Spells: Prevent deterrance from parrying spells that require the
 attacker to be behind the hunter, like Shred or Ambush.

---
 src/server/game/Entities/Unit/Unit.cpp | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

(limited to 'src/server')

diff --git a/src/server/game/Entities/Unit/Unit.cpp b/src/server/game/Entities/Unit/Unit.cpp
index 4ff9b7fc786..67abe1e9768 100755
--- a/src/server/game/Entities/Unit/Unit.cpp
+++ b/src/server/game/Entities/Unit/Unit.cpp
@@ -2402,14 +2402,22 @@ SpellMissInfo Unit::MeleeSpellHitResult(Unit* victim, SpellInfo const* spell)
     }
 
     // Check for attack from behind
-    if (!victim->HasInArc(M_PI, this) && !victim->HasAuraType(SPELL_AURA_IGNORE_HIT_DIRECTION))
+    if (!victim->HasInArc(M_PI, this))
     {
-        // Can`t dodge from behind in PvP (but its possible in PvE)
-        if (victim->GetTypeId() == TYPEID_PLAYER)
-            canDodge = false;
-        // Can`t parry or block
-        canParry = false;
-        canBlock = false;
+        if (!victim->HasAuraType(SPELL_AURA_IGNORE_HIT_DIRECTION))
+        {
+            // Can`t dodge from behind in PvP (but its possible in PvE)
+            if (victim->GetTypeId() == TYPEID_PLAYER)
+                canDodge = false;
+            // Can`t parry or block
+            canParry = false;
+            canBlock = false;
+        }
+        else // Only deterrence as of 3.3.5
+        {
+            if (spell->AttributesCu & SPELL_ATTR0_CU_REQ_CASTER_BEHIND_TARGET)
+                canParry = false;
+        }
     }
     // Check creatures flags_extra for disable parry
     if (victim->GetTypeId() == TYPEID_UNIT)
-- 
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