1 files changed, 268 insertions, 0 deletions
diff --git a/src/server/game/AI/CreatureAI.cpp b/src/server/game/AI/CreatureAI.cpp
new file mode 100644
index 0000000000..226fd7083b
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+++ b/src/server/game/AI/CreatureAI.cpp
@@ -0,0 +1,268 @@
+/*
+ * Copyright (C) 
+ * Copyright (C) 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "CreatureAI.h"
+#include "CreatureAIImpl.h"
+#include "Creature.h"
+#include "World.h"
+#include "SpellMgr.h"
+#include "Vehicle.h"
+#include "Log.h"
+#include "MapReference.h"
+#include "Player.h"
+#include "CreatureTextMgr.h"
+
+//Disable CreatureAI when charmed
+void CreatureAI::OnCharmed(bool /*apply*/)
+{
+    //me->IsAIEnabled = !apply;*/
+    me->NeedChangeAI = true;
+    me->IsAIEnabled = false;
+}
+
+AISpellInfoType* UnitAI::AISpellInfo;
+AISpellInfoType* GetAISpellInfo(uint32 i) { return &CreatureAI::AISpellInfo[i]; }
+
+void CreatureAI::Talk(uint8 id, WorldObject const* whisperTarget /*= NULL*/)
+{
+    sCreatureTextMgr->SendChat(me, id, whisperTarget);
+}
+
+void CreatureAI::DoZoneInCombat(Creature* creature /*= NULL*/, float maxRangeToNearestTarget /* = 50.0f*/)
+{
+    if (!creature)
+        creature = me;
+
+    if (!creature->CanHaveThreatList())
+        return;
+
+    Map* map = creature->GetMap();
+    if (!map->IsDungeon())                                  //use IsDungeon instead of Instanceable, in case battlegrounds will be instantiated
+    {
+        sLog->outError("DoZoneInCombat call for map that isn't an instance (creature entry = %d)", creature->GetTypeId() == TYPEID_UNIT ? creature->ToCreature()->GetEntry() : 0);
+        return;
+    }
+
+	// Xinef: Skip creatures in evade mode
+	if (!creature->HasReactState(REACT_PASSIVE) && !creature->GetVictim() && !creature->IsInEvadeMode())
+    {
+        if (Unit* nearTarget = creature->SelectNearestTarget(maxRangeToNearestTarget))
+            creature->AI()->AttackStart(nearTarget);
+        else if (creature->IsSummon())
+        {
+            if (Unit* summoner = creature->ToTempSummon()->GetSummoner())
+            {
+                Unit* target = summoner->getAttackerForHelper();
+                if (!target && summoner->CanHaveThreatList() && !summoner->getThreatManager().isThreatListEmpty())
+                    target = summoner->getThreatManager().getHostilTarget();
+                if (target && (creature->IsFriendlyTo(summoner) || creature->IsHostileTo(target)))
+                    creature->AI()->AttackStart(target);
+            }
+        }
+    }
+
+    if (!creature->HasReactState(REACT_PASSIVE) && !creature->GetVictim())
+    {
+        sLog->outError("DoZoneInCombat called for creature that has empty threat list (creature entry = %u)", creature->GetEntry());
+        return;
+    }
+
+    Map::PlayerList const& playerList = map->GetPlayers();
+
+    if (playerList.isEmpty())
+        return;
+
+    for (Map::PlayerList::const_iterator itr = playerList.begin(); itr != playerList.end(); ++itr)
+    {
+        if (Player* player = itr->GetSource())
+        {
+            if (player->IsGameMaster())
+                continue;
+
+            if (player->IsAlive())
+            {
+                creature->SetInCombatWith(player);
+                player->SetInCombatWith(creature);
+                creature->AddThreat(player, 0.0f);
+            }
+
+            /* Causes certain things to never leave the threat list (Priest Lightwell, etc):
+            for (Unit::ControlSet::const_iterator itr = player->m_Controlled.begin(); itr != player->m_Controlled.end(); ++itr)
+            {
+                creature->SetInCombatWith(*itr);
+                (*itr)->SetInCombatWith(creature);
+                creature->AddThreat(*itr, 0.0f);
+            }*/
+        }
+    }
+}
+
+// scripts does not take care about MoveInLineOfSight loops
+// MoveInLineOfSight can be called inside another MoveInLineOfSight and cause stack overflow
+void CreatureAI::MoveInLineOfSight_Safe(Unit* who)
+{
+    if (m_MoveInLineOfSight_locked == true)
+        return;
+    m_MoveInLineOfSight_locked = true;
+    MoveInLineOfSight(who);
+    m_MoveInLineOfSight_locked = false;
+}
+
+void CreatureAI::MoveInLineOfSight(Unit* who)
+{
+    if (me->GetVictim())
+        return;
+
+	// pussywizard: civilian, non-combat pet or any other NOT HOSTILE TO ANYONE (!)
+	if (me->IsMoveInLineOfSightDisabled())
+		if (me->GetCreatureType() == CREATURE_TYPE_NON_COMBAT_PET ||      // nothing more to do, return
+			!who->IsInCombat() ||                                         // if not in combat, nothing more to do
+			!me->IsWithinDist(who, ATTACK_DISTANCE))                      // if in combat and in dist - neutral to all can actually assist other creatures
+			return;
+
+    if (me->CanStartAttack(who))
+        AttackStart(who);
+}
+
+void CreatureAI::EnterEvadeMode()
+{
+    if (!_EnterEvadeMode())
+        return;
+
+    ;//sLog->outDebug(LOG_FILTER_UNITS, "Creature %u enters evade mode.", me->GetEntry());
+
+    if (!me->GetVehicle()) // otherwise me will be in evade mode forever
+    {
+        if (Unit* owner = me->GetCharmerOrOwner())
+        {
+            me->GetMotionMaster()->Clear(false);
+            me->GetMotionMaster()->MoveFollow(owner, PET_FOLLOW_DIST, me->GetFollowAngle(), MOTION_SLOT_ACTIVE);
+        }
+        else
+        {
+            // Required to prevent attacking creatures that are evading and cause them to reenter combat
+            // Does not apply to MoveFollow
+            me->AddUnitState(UNIT_STATE_EVADE);
+            me->GetMotionMaster()->MoveTargetedHome();
+        }
+    }
+
+    Reset();
+
+    if (me->IsVehicle()) // use the same sequence of addtoworld, aireset may remove all summons!
+        me->GetVehicleKit()->Reset(true);
+}
+
+/*void CreatureAI::AttackedBy(Unit* attacker)
+{
+    if (!me->GetVictim())
+        AttackStart(attacker);
+}*/
+
+void CreatureAI::SetGazeOn(Unit* target)
+{
+    if (me->IsValidAttackTarget(target))
+    {
+        AttackStart(target);
+        me->SetReactState(REACT_PASSIVE);
+    }
+}
+
+bool CreatureAI::UpdateVictimWithGaze()
+{
+    if (!me->IsInCombat())
+        return false;
+
+    if (me->HasReactState(REACT_PASSIVE))
+    {
+        if (me->GetVictim())
+            return true;
+        else
+            me->SetReactState(REACT_AGGRESSIVE);
+    }
+
+    if (Unit* victim = me->SelectVictim())
+        AttackStart(victim);
+    return me->GetVictim();
+}
+
+bool CreatureAI::UpdateVictim()
+{
+    if (!me->IsInCombat())
+        return false;
+
+    if (!me->HasReactState(REACT_PASSIVE))
+    {
+        if (Unit* victim = me->SelectVictim())
+            AttackStart(victim);
+        return me->GetVictim();
+    }
+	// xinef: if we have any victim, just return true
+	else if (me->GetVictim() && me->GetExactDist(me->GetVictim()) < 30.0f)
+		return true;
+    else if (me->getThreatManager().isThreatListEmpty())
+    {
+        EnterEvadeMode();
+        return false;
+    }
+
+    return true;
+}
+
+bool CreatureAI::_EnterEvadeMode()
+{
+    if (!me->IsAlive())
+        return false;
+
+    // don't remove vehicle auras, passengers aren't supposed to drop off the vehicle
+    // don't remove clone caster on evade (to be verified)
+    me->RemoveEvadeAuras();
+
+    // sometimes bosses stuck in combat?
+    me->DeleteThreatList();
+    me->CombatStop(true);
+    me->LoadCreaturesAddon(true);
+    me->SetLootRecipient(NULL);
+    me->ResetPlayerDamageReq();
+    me->SetLastDamagedTime(0);
+
+    if (me->IsInEvadeMode())
+        return false;
+
+    return true;
+}
+
+Creature* CreatureAI::DoSummon(uint32 entry, const Position& pos, uint32 despawnTime, TempSummonType summonType)
+{
+    return me->SummonCreature(entry, pos, summonType, despawnTime);
+}
+
+Creature* CreatureAI::DoSummon(uint32 entry, WorldObject* obj, float radius, uint32 despawnTime, TempSummonType summonType)
+{
+    Position pos;
+    obj->GetRandomNearPosition(pos, radius);
+    return me->SummonCreature(entry, pos, summonType, despawnTime);
+}
+
+Creature* CreatureAI::DoSummonFlyer(uint32 entry, WorldObject* obj, float flightZ, float radius, uint32 despawnTime, TempSummonType summonType)
+{
+    Position pos;
+    obj->GetRandomNearPosition(pos, radius);
+    pos.m_positionZ += flightZ;
+    return me->SummonCreature(entry, pos, summonType, despawnTime);
+}