UP and CoS dungeons

- Utgarde Pinnacle implementation
- Culling of Stratholme implementation
- Added additional value ("nearest hostile npcs") needed to expose some hidden trigger-type npc units (eg. frost breath on Skadi fight in UP)

src/strategy/dungeons/wotlk/utgardepinnacle/UtgardePinnacleTriggers.cpp

@@ -0,0 +1,48 @@
+#include "Playerbots.h"
+#include "UtgardePinnacleTriggers.h"
+#include "AiObject.h"
+#include "AiObjectContext.h"
+
+bool SkadiFreezingCloudTrigger::IsActive()
+{
+    Unit* bossMount = AI_VALUE2(Unit*, "find target", "grauf");
+    if (!bossMount) { return false; }
+
+    // Need to check two conditions here - the persistent ground effect doesn't
+    // seem to be detectable until 3-5 secs in, despite it dealing damage.
+    // The initial breath triggers straight away but once it's over, the bots will run back on
+    // to the frezzing cloud and take damage.
+    // Therefore check both conditions and trigger on either.
+
+    // Check this one first, if true then we don't need to iterate over any objects
+    if (bossMount->HasAura(SPELL_FREEZING_CLOUD_BREATH))
+    {
+        return true;
+    }
+
+    // Otherwise, check for persistent ground objects emitting the freezing cloud
+    GuidVector objects = AI_VALUE(GuidVector, "nearest hostile npcs");
+    for (auto i = objects.begin(); i != objects.end(); ++i)
+    {
+        Unit* unit = botAI->GetUnit(*i);
+        if (unit && unit->GetEntry() == NPC_BREATH_TRIGGER)
+        {
+            Unit::AuraApplicationMap const& Auras = unit->GetAppliedAuras();
+            for (Unit::AuraApplicationMap::const_iterator itr = Auras.begin(); itr != Auras.end(); ++itr)
+            {
+                Aura* aura = itr->second->GetBase();
+                if (aura && aura->GetId() == SPELL_FREEZING_CLOUD)
+                {
+                    return true;
+                }
+            }
+        }
+    }
+    return false;
+}
+
+bool SkadiWhirlwindTrigger::IsActive()
+{
+    Unit* boss = AI_VALUE2(Unit*, "find target", "skadi the ruthless");
+    return boss && boss->HasAura(SPELL_SKADI_WHIRLWIND);
+}