Core: Combat/threat system rewrite
Port From (https://github.com/TrinityCore/TrinityCore/commit/34c7810fe507eca1b8b9389630db5d5d26d92e77)
This commit is contained in:
hondacrx
@@ -19,6 +19,7 @@ using Framework.Constants;
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using Framework.Database;
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using Framework.Dynamic;
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using Game.AI;
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using Game.Combat;
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using Game.DataStorage;
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using Game.Groups;
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using Game.Loots;
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@@ -420,6 +421,8 @@ namespace Game.Entities
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UpdateMovementFlags();
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LoadCreaturesAddon();
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LoadTemplateImmunities();
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GetThreatManager().UpdateOnlineStates(true, true);
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return true;
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}
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@@ -511,6 +514,8 @@ namespace Game.Entities
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if (!IsAlive())
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break;
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GetThreatManager().Update(diff);
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if (m_shouldReacquireTarget && !IsFocusing(null, true))
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{
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SetTarget(m_suppressedTarget);
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@@ -903,10 +908,110 @@ namespace Game.Entities
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ApplySpellImmune(0, SpellImmunity.Effect, SpellEffectName.KnockBackDest, true);
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}
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GetThreatManager().Initialize();
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return true;
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}
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void InitializeReactState()
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public Unit SelectVictim()
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{
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Unit target = null;
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ThreatManager mgr = GetThreatManager();
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if (mgr.CanHaveThreatList())
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{
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target = mgr.SelectVictim();
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while (!target)
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{
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Unit newTarget = null;
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// nothing found to attack - try to find something we're in combat with (but don't have a threat entry for yet) and start attacking it
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foreach (var pair in GetCombatManager().GetPvECombatRefs())
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{
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newTarget = pair.Value.GetOther(this);
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if (!mgr.IsThreatenedBy(newTarget, true))
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{
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mgr.AddThreat(newTarget, 0.0f, null, true, true);
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break;
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}
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else
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newTarget = null;
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}
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if (!newTarget)
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break;
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target = mgr.SelectVictim();
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}
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}
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else if (!HasReactState(ReactStates.Passive))
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{
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// We're a player pet, probably
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target = GetAttackerForHelper();
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if (!target && IsSummon())
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{
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Unit owner = ToTempSummon().GetOwner();
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if (owner != null)
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{
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if (owner.IsInCombat())
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target = owner.GetAttackerForHelper();
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if (!target)
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{
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foreach (var itr in owner.m_Controlled)
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{
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if (itr.IsInCombat())
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{
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target = itr.GetAttackerForHelper();
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if (target)
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break;
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}
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}
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}
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}
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}
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}
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else
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return null;
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if (target && _IsTargetAcceptable(target) && CanCreatureAttack(target))
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{
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if (!IsFocusing(null, true))
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SetInFront(target);
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return target;
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}
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/// @todo a vehicle may eat some mob, so mob should not evade
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if (GetVehicle())
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return null;
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// search nearby enemy before enter evade mode
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if (HasReactState(ReactStates.Passive))
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{
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target = SelectNearestTargetInAttackDistance(m_CombatDistance != 0 ? m_CombatDistance : SharedConst.AttackDistance);
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if (target && _IsTargetAcceptable(target) && CanCreatureAttack(target))
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return target;
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}
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var iAuras = GetAuraEffectsByType(AuraType.ModInvisibility);
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if (!iAuras.Empty())
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{
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foreach (var itr in iAuras)
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{
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if (itr.GetBase().IsPermanent())
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{
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GetAI().EnterEvadeMode(EvadeReason.Other);
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break;
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}
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}
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return null;
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}
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// enter in evade mode in other case
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GetAI().EnterEvadeMode(EvadeReason.NoHostiles);
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return null;
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}
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public void InitializeReactState()
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{
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if (IsTotem() || IsTrigger() || IsCritter() || IsSpiritService())
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SetReactState(ReactStates.Passive);
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@@ -994,6 +1099,37 @@ namespace Game.Entities
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&& !GetCreatureTemplate().FlagsExtra.HasAnyFlag(CreatureFlagsExtra.NoXpAtKill);
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}
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public override void AtEnterCombat()
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{
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base.AtEnterCombat();
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if (!GetCreatureTemplate().TypeFlags.HasAnyFlag(CreatureTypeFlags.MountedCombatAllowed))
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Dismount();
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if (IsPet() || IsGuardian()) // update pets' speed for catchup OOC speed
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{
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UpdateSpeed(UnitMoveType.Run);
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UpdateSpeed(UnitMoveType.Swim);
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UpdateSpeed(UnitMoveType.Flight);
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}
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}
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public override void AtExitCombat()
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{
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base.AtExitCombat();
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ClearUnitState(UnitState.AttackPlayer);
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if (HasDynamicFlag(UnitDynFlags.Tapped))
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SetDynamicFlags((UnitDynFlags)GetCreatureTemplate().DynamicFlags);
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if (IsPet() || IsGuardian()) // update pets' speed for catchup OOC speed
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{
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UpdateSpeed(UnitMoveType.Run);
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UpdateSpeed(UnitMoveType.Swim);
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UpdateSpeed(UnitMoveType.Flight);
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}
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}
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public bool IsEscortNPC(bool onlyIfActive = true)
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{
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if (!IsAIEnabled)
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@@ -3147,127 +3283,6 @@ namespace Game.Entities
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// There's many places not ready for dynamic spawns. This allows them to live on for now.
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void SetRespawnCompatibilityMode(bool mode = true) { m_respawnCompatibilityMode = mode; }
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public bool GetRespawnCompatibilityMode() { return m_respawnCompatibilityMode; }
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public Unit SelectVictim()
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{
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// function provides main threat functionality
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// next-victim-selection algorithm and evade mode are called
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// threat list sorting etc.
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Unit target = null;
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// First checking if we have some taunt on us
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var tauntAuras = GetAuraEffectsByType(AuraType.ModTaunt);
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if (!tauntAuras.Empty())
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{
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Unit caster = tauntAuras.Last().GetCaster();
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// The last taunt aura caster is alive an we are happy to attack him
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if (caster != null && caster.IsAlive())
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return GetVictim();
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else if (tauntAuras.Count > 1)
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{
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// We do not have last taunt aura caster but we have more taunt auras,
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// so find first available target
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// Auras are pushed_back, last caster will be on the end
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for (var i = tauntAuras.Count - 1; i >= 0; i--)
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{
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caster = tauntAuras[i].GetCaster();
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if (caster != null && CanSeeOrDetect(caster, true) && IsValidAttackTarget(caster) && caster.IsInAccessiblePlaceFor(ToCreature()))
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{
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target = caster;
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break;
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}
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}
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}
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else
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target = GetVictim();
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}
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if (CanHaveThreatList())
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{
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if (target == null && !GetThreatManager().IsThreatListEmpty())
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// No taunt aura or taunt aura caster is dead standard target selection
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target = GetThreatManager().GetHostilTarget();
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}
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else if (!HasReactState(ReactStates.Passive))
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{
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// We have player pet probably
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target = GetAttackerForHelper();
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if (target == null && IsSummon())
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{
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Unit owner = ToTempSummon().GetOwner();
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if (owner != null)
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{
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if (owner.IsInCombat())
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target = owner.GetAttackerForHelper();
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if (target == null)
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{
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foreach (var unit in owner.m_Controlled)
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{
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if (unit.IsInCombat())
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{
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target = unit.GetAttackerForHelper();
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if (target)
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break;
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}
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}
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}
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}
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}
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}
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else
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return null;
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if (target != null && _IsTargetAcceptable(target) && CanCreatureAttack(target))
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{
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if (!IsFocusing(null, true))
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SetInFront(target);
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return target;
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}
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// last case when creature must not go to evade mode:
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// it in combat but attacker not make any damage and not enter to aggro radius to have record in threat list
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// Note: creature does not have targeted movement generator but has attacker in this case
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foreach (var unit in attackerList)
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{
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if (CanCreatureAttack(unit) && !unit.IsTypeId(TypeId.Player)
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&& !unit.ToCreature().HasUnitTypeMask(UnitTypeMask.ControlableGuardian))
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return null;
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}
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// @todo a vehicle may eat some mob, so mob should not evade
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if (GetVehicle() != null)
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return null;
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// search nearby enemy before enter evade mode
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if (HasReactState(ReactStates.Aggressive))
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{
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target = SelectNearestTargetInAttackDistance(m_CombatDistance != 0 ? m_CombatDistance : SharedConst.AttackDistance);
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if (target != null && _IsTargetAcceptable(target) && CanCreatureAttack(target))
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return target;
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}
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var iAuras = GetAuraEffectsByType(AuraType.ModInvisibility);
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if (!iAuras.Empty())
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{
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foreach (var aura in iAuras)
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{
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if (aura.GetBase().IsPermanent())
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{
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GetAI().EnterEvadeMode();
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break;
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}
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}
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return null;
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}
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// enter in evade mode in other case
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GetAI().EnterEvadeMode(EvadeReason.NoHostiles);
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return null;
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}
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}
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public class VendorItemCount
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