Core:

* add helping methods for manipulating unit's health and use it where applicable
* fix some conversion warnings and cleanup code (formatting, CRLF, tabs to spaces)

--HG--
branch : trunk

src/server/game/AI/ScriptedAI/ScriptedGuardAI.cpp

@@ -103,7 +103,7 @@ void guardAI::UpdateAI(const uint32 diff)
             SpellEntry const *info = NULL;
 
             //Select a healing spell if less than 30% hp
-            if (me->GetHealth()*100 / me->GetMaxHealth() < 30)
+            if (HealthBelowPct(30))
                 info = SelectSpell(me, 0, 0, SELECT_TARGET_ANY_FRIEND, 0, 0, 0, 0, SELECT_EFFECT_HEALING);
 
             //No healing spell available, select a hostile spell
@@ -134,7 +134,7 @@ void guardAI::UpdateAI(const uint32 diff)
             SpellEntry const *info = NULL;
 
             //Select a healing spell if less than 30% hp ONLY 33% of the time
-            if (me->GetHealth()*100 / me->GetMaxHealth() < 30 && rand() % 3 == 0)
+            if (HealthBelowPct(30) && rand() % 3 == 0)
                 info = SelectSpell(me, 0, 0, SELECT_TARGET_ANY_FRIEND, 0, 0, 0, 0, SELECT_EFFECT_HEALING);
 
             //No healing spell available, See if we can cast a ranged spell (Range must be greater than ATTACK_DISTANCE)