Fix warrior selfheal & heal-reduction (and handling of OBS_MOD_HEALTH in the same time)

(Thanks to dr.tenma)

--HG--
branch : trunk

src/server/game/Spells/Auras/SpellAuraEffects.cpp

@@ -1485,7 +1485,37 @@ void AuraEffect::PeriodicTick(Unit * target, Unit * caster) const
             int32 damage = m_amount > 0 ? m_amount : 0;
 
             if (GetAuraType() == SPELL_AURA_OBS_MOD_HEALTH)
+            {
+                // Taken mods
+                float TakenTotalMod = 1.0f;
+
+                // Tenacity increase healing % taken
+                if (AuraEffect const* Tenacity = target->GetAuraEffect(58549, 0))
+                    TakenTotalMod *= (Tenacity->GetAmount() + 100.0f) / 100.0f;
+
+                // Healing taken percent
+                float minval = target->GetMaxNegativeAuraModifier(SPELL_AURA_MOD_HEALING_PCT);
+                if (minval)
+                    TakenTotalMod *= (100.0f + minval) / 100.0f;
+
+                float maxval = target->GetMaxPositiveAuraModifier(SPELL_AURA_MOD_HEALING_PCT);
+                if (maxval)
+                    TakenTotalMod *= (100.0f + maxval) / 100.0f;
+                
+                // Healing over time taken percent
+                float minval_hot = target->GetMaxNegativeAuraModifier(SPELL_AURA_MOD_HOT_PCT);
+                if (minval_hot)
+                    TakenTotalMod *= (100.0f + minval_hot) / 100.0f;
+
+                float maxval_hot = target->GetMaxPositiveAuraModifier(SPELL_AURA_MOD_HOT_PCT);
+                if (maxval_hot)
+                    TakenTotalMod *= (100.0f + maxval_hot) / 100.0f;
+
+                TakenTotalMod = TakenTotalMod > 0.0f ? TakenTotalMod : 0.0f;
+
                 damage = uint32(target->GetMaxHealth() * damage / 100);
+                damage = uint32(damage * TakenTotalMod);
+            }
             else
             {
                 // Wild Growth = amount + (6 - 2*doneTicks) * ticks* amount / 100