Fabian
a3dc7b3f48
hondacrx: - Initial commit: Switch to .Net Core 2.0 - Fix build and removed not needed files Fabi: - Updated solution platforms. - Changed folder structure. - Change library target framework to netstandard2.0. - Updated solution platforms again... - Removed windows specific kernel32 function usage (Ctrl-C handler).
576 lines
21 KiB
C#
576 lines
21 KiB
C#
/*
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* Copyright (C) 2012-2017 CypherCore <http://github.com/CypherCore>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using Framework.Constants;
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using Game.Combat;
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using Game.Entities;
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using Game.Spells;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.Contracts;
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using System.Linq;
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namespace Game.AI
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{
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public class UnitAI
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{
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public UnitAI(Unit _unit)
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{
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me = _unit;
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}
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public virtual void AttackStart(Unit victim)
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{
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if (victim != null && me.Attack(victim, true))
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{
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// Clear distracted state on attacking
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if (me.HasUnitState(UnitState.Distracted))
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{
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me.ClearUnitState(UnitState.Distracted);
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me.GetMotionMaster().Clear();
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}
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me.GetMotionMaster().MoveChase(victim);
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}
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}
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public void AttackStartCaster(Unit victim, float dist)
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{
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if (victim != null && me.Attack(victim, false))
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me.GetMotionMaster().MoveChase(victim, dist);
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}
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ThreatManager GetThreatManager()
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{
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return me.GetThreatManager();
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}
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void SortByDistanceTo(Unit reference, List<Unit> targets)
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{
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targets.Sort(new ObjectDistanceOrderPred(reference));
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}
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public void DoMeleeAttackIfReady()
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{
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if (me.HasUnitState(UnitState.Casting))
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return;
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Unit victim = me.GetVictim();
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if (!me.IsWithinMeleeRange(victim))
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return;
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bool sparAttack = me.GetFactionTemplateEntry().ShouldSparAttack() && victim.GetFactionTemplateEntry().ShouldSparAttack();
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//Make sure our attack is ready and we aren't currently casting before checking distance
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if (me.isAttackReady())
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{
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if (sparAttack)
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me.FakeAttackerStateUpdate(victim);
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else
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me.AttackerStateUpdate(victim);
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me.resetAttackTimer();
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}
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if (me.haveOffhandWeapon() && me.isAttackReady(WeaponAttackType.OffAttack))
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{
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if (sparAttack)
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me.FakeAttackerStateUpdate(victim, WeaponAttackType.OffAttack);
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else
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me.AttackerStateUpdate(victim, WeaponAttackType.OffAttack);
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me.resetAttackTimer(WeaponAttackType.OffAttack);
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}
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}
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public bool DoSpellAttackIfReady(uint spell)
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{
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if (me.HasUnitState(UnitState.Casting) || !me.isAttackReady())
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return true;
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var spellInfo = Global.SpellMgr.GetSpellInfo(spell);
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if (spellInfo != null)
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{
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if (me.IsWithinCombatRange(me.GetVictim(), spellInfo.GetMaxRange(false)))
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{
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me.CastSpell(me.GetVictim(), spellInfo, TriggerCastFlags.None);
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me.resetAttackTimer();
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return true;
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}
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}
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return false;
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}
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public Unit SelectTarget(SelectAggroTarget targetType, uint position = 0, float dist = 0.0f, bool playerOnly = false, int aura = 0)
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{
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return SelectTarget(targetType, position, new DefaultTargetSelector(me, dist, playerOnly, aura));
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}
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// Select the targets satifying the predicate.
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public Unit SelectTarget(SelectAggroTarget targetType, uint position, ISelector selector)
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{
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var threatlist = GetThreatManager().getThreatList();
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if (position >= threatlist.Count)
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return null;
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List<Unit> targetList = new List<Unit>();
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Unit currentVictim = null;
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var currentVictimReference = GetThreatManager().getCurrentVictim();
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if (currentVictimReference != null)
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{
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currentVictim = currentVictimReference.getTarget();
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// Current victim always goes first
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if (currentVictim && selector.Check(currentVictim))
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targetList.Add(currentVictim);
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}
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foreach (var hostileRef in threatlist)
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{
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if (currentVictim != null && hostileRef.getTarget() != currentVictim && selector.Check(hostileRef.getTarget()))
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targetList.Add(hostileRef.getTarget());
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else if (currentVictim == null && selector.Check(hostileRef.getTarget()))
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targetList.Add(hostileRef.getTarget());
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}
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if (position >= targetList.Count)
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return null;
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if (targetType == SelectAggroTarget.Nearest || targetType == SelectAggroTarget.Farthest)
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SortByDistanceTo(me, targetList);
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switch (targetType)
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{
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case SelectAggroTarget.Nearest:
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case SelectAggroTarget.TopAggro:
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{
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return targetList.First();
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}
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case SelectAggroTarget.Farthest:
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case SelectAggroTarget.BottomAggro:
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{
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return targetList.Last();
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}
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case SelectAggroTarget.Random:
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{
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return targetList.SelectRandom();
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}
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default:
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break;
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}
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return null;
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}
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public List<Unit> SelectTargetList(uint num, SelectAggroTarget targetType, float dist, bool playerOnly, int aura = 0)
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{
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return SelectTargetList(new DefaultTargetSelector(me, dist, playerOnly, aura), num, targetType);
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}
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// Select the targets satifying the predicate.
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// predicate shall extend std.unary_function<Unit*, bool>
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public List<Unit> SelectTargetList(ISelector selector, uint maxTargets, SelectAggroTarget targetType)
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{
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var targetList = new List<Unit>();
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var threatlist = GetThreatManager().getThreatList();
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if (threatlist.Empty())
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return targetList;
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foreach (var hostileRef in threatlist)
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if (selector.Check(hostileRef.getTarget()))
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targetList.Add(hostileRef.getTarget());
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if (targetList.Count < maxTargets)
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return targetList;
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if (targetType == SelectAggroTarget.Nearest || targetType == SelectAggroTarget.Farthest)
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SortByDistanceTo(me, targetList);
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if (targetType == SelectAggroTarget.Farthest || targetType == SelectAggroTarget.BottomAggro)
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targetList.Reverse();
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if (targetType == SelectAggroTarget.Random)
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targetList = targetList.SelectRandom(maxTargets).ToList();
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else
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targetList.Resize(maxTargets);
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return targetList;
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}
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public void DoCast(uint spellId)
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{
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Unit target = null;
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switch (AISpellInfo[spellId].target)
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{
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default:
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case AITarget.Self:
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target = me;
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break;
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case AITarget.Victim:
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target = me.GetVictim();
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break;
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case AITarget.Enemy:
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{
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var spellInfo = Global.SpellMgr.GetSpellInfo(spellId);
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if (spellInfo != null)
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{
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bool playerOnly = spellInfo.HasAttribute(SpellAttr3.OnlyTargetPlayers);
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target = SelectTarget(SelectAggroTarget.Random, 0, spellInfo.GetMaxRange(false), playerOnly);
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}
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break;
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}
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case AITarget.Ally:
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case AITarget.Buff:
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target = me;
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break;
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case AITarget.Debuff:
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{
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var spellInfo = Global.SpellMgr.GetSpellInfo(spellId);
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if (spellInfo != null)
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{
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bool playerOnly = spellInfo.HasAttribute(SpellAttr3.OnlyTargetPlayers);
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float range = spellInfo.GetMaxRange(false);
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DefaultTargetSelector targetSelector = new DefaultTargetSelector(me, range, playerOnly, -(int)spellId);
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if (!spellInfo.AuraInterruptFlags.HasAnyFlag(SpellAuraInterruptFlags.NotVictim)
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&& targetSelector.Check(me.GetVictim()))
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target = me.GetVictim();
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else
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target = SelectTarget(SelectAggroTarget.Random, 0, targetSelector);
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}
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break;
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}
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}
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if (target != null)
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me.CastSpell(target, spellId, false);
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}
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public void DoCast(Unit victim, uint spellId, bool triggered = false)
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{
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if (victim == null || (me.HasUnitState(UnitState.Casting) && !triggered))
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return;
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me.CastSpell(victim, spellId, triggered);
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}
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public void DoCastSelf(uint spellId, bool triggered = false) { DoCast(me, spellId, triggered); }
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public void DoCastVictim(uint spellId, bool triggered = false)
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{
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if (me.GetVictim() == null || (me.HasUnitState(UnitState.Casting) && !triggered))
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return;
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me.CastSpell(me.GetVictim(), spellId, triggered);
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}
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public void DoCastAOE(uint spellId, bool triggered = false)
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{
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if (!triggered && me.HasUnitState(UnitState.Casting))
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return;
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me.CastSpell((Unit)null, spellId, triggered);
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}
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public static void FillAISpellInfo()
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{
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var spellStorage = Global.SpellMgr.GetSpellInfoStorage();
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AISpellInfo = new AISpellInfoType[spellStorage.Keys.Max() + 1];
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foreach (var spellInfo in spellStorage.Values)
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{
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AISpellInfoType AIInfo = AISpellInfo[spellInfo.Id];
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if (spellInfo.HasAttribute(SpellAttr0.CastableWhileDead))
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AIInfo.condition = AICondition.Die;
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else if (spellInfo.IsPassive() || spellInfo.GetDuration() == -1)
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AIInfo.condition = AICondition.Aggro;
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else
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AIInfo.condition = AICondition.Combat;
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if (AIInfo.cooldown < spellInfo.RecoveryTime)
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AIInfo.cooldown = spellInfo.RecoveryTime;
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if (spellInfo.GetMaxRange(false) == 0)
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{
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if (AIInfo.target < AITarget.Self)
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AIInfo.target = AITarget.Self;
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}
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else
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{
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foreach (SpellEffectInfo effect in spellInfo.GetEffectsForDifficulty(Difficulty.None))
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{
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if (effect == null)
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continue;
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var targetType = effect.TargetA.GetTarget();
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if (targetType == Targets.UnitEnemy || targetType == Targets.DestEnemy)
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{
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if (AIInfo.target < AITarget.Victim)
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AIInfo.target = AITarget.Victim;
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}
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else if (targetType == Targets.UnitDestAreaEnemy)
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{
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if (AIInfo.target < AITarget.Enemy)
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AIInfo.target = AITarget.Enemy;
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}
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if (effect.Effect == SpellEffectName.ApplyAura)
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{
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if (targetType == Targets.UnitEnemy)
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{
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if (AIInfo.target < AITarget.Debuff)
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AIInfo.target = AITarget.Debuff;
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}
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else if (spellInfo.IsPositive())
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{
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if (AIInfo.target < AITarget.Buff)
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AIInfo.target = AITarget.Buff;
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}
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}
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}
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}
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AIInfo.realCooldown = spellInfo.RecoveryTime + spellInfo.StartRecoveryTime;
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AIInfo.maxRange = spellInfo.GetMaxRange(false) * 3 / 4;
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}
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}
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public virtual bool CanAIAttack(Unit victim) { return true; }
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public virtual void UpdateAI(uint diff) { }
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public virtual void InitializeAI()
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{
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if (!me.IsDead())
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Reset();
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}
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public virtual void Reset() { }
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public virtual void OnCharmed(bool apply) { }
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public virtual void DoAction(int param) { }
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public virtual uint GetData(uint id = 0) { return 0; }
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public virtual void SetData(uint id, uint value) { }
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public virtual void SetGUID(ObjectGuid guid, int id = 0) { }
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public virtual ObjectGuid GetGUID(int id = 0) { return ObjectGuid.Empty; }
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public virtual void DamageDealt(Unit victim, ref uint damage, DamageEffectType damageType) { }
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public virtual void DamageTaken(Unit attacker, ref uint damage) { }
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public virtual void HealReceived(Unit by, uint addhealth) { }
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public virtual void HealDone(Unit to, uint addhealth) { }
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public virtual void SpellInterrupted(uint spellId, uint unTimeMs) {}
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public virtual void sGossipHello(Player player) { }
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public virtual void sGossipSelect(Player player, uint menuId, uint gossipListId) { }
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public virtual void sGossipSelectCode(Player player, uint menuId, uint gossipListId, string code) { }
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public virtual void sQuestAccept(Player player, Quest quest) { }
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public virtual void sQuestSelect(Player player, Quest quest) { }
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public virtual void sQuestComplete(Player player, Quest quest) { }
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public virtual void sQuestReward(Player player, Quest quest, uint opt) { }
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public virtual bool sOnDummyEffect(Unit caster, uint spellId, int effIndex) { return false; }
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public virtual void sOnGameEvent(bool start, ushort eventId) { }
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public static AISpellInfoType[] AISpellInfo;
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protected Unit me { get; private set; }
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}
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public enum SelectAggroTarget
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{
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Random = 0, //Just selects a random target
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TopAggro, //Selects targes from top aggro to bottom
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BottomAggro, //Selects targets from bottom aggro to top
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Nearest,
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Farthest
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}
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public interface ISelector
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{
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bool Check(Unit target);
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}
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// default predicate function to select target based on distance, player and/or aura criteria
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public class DefaultTargetSelector : ISelector
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{
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Unit me;
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float m_dist;
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bool m_playerOnly;
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int m_aura;
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// unit: the reference unit
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// dist: if 0: ignored, if > 0: maximum distance to the reference unit, if < 0: minimum distance to the reference unit
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// playerOnly: self explaining
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// aura: if 0: ignored, if > 0: the target shall have the aura, if < 0, the target shall NOT have the aura
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public DefaultTargetSelector(Unit unit, float dist, bool playerOnly, int aura)
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{
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me = unit;
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m_dist = dist;
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m_playerOnly = playerOnly;
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m_aura = aura;
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}
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public bool Check(Unit target)
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{
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if (me == null)
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return false;
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if (target == null)
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return false;
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if (m_playerOnly && !target.IsTypeId(TypeId.Player))
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return false;
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if (m_dist > 0.0f && !me.IsWithinCombatRange(target, m_dist))
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return false;
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if (m_dist < 0.0f && me.IsWithinCombatRange(target, -m_dist))
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return false;
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if (m_aura != 0)
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{
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if (m_aura > 0)
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{
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if (!target.HasAura((uint)m_aura))
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return false;
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}
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else
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{
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if (target.HasAura((uint)-m_aura))
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return false;
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}
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}
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return true;
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}
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}
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// Target selector for spell casts checking range, auras and attributes
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// todo Add more checks from Spell.CheckCast
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public class SpellTargetSelector : ISelector
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{
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public SpellTargetSelector(Unit caster, uint spellId)
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{
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_caster = caster;
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_spellInfo = Global.SpellMgr.GetSpellInfo(spellId);
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Contract.Assert(_spellInfo != null);
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}
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public bool Check(Unit target)
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{
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if (target == null)
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return false;
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if (_spellInfo.CheckTarget(_caster, target) != SpellCastResult.SpellCastOk)
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return false;
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// copypasta from Spell.CheckRange
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float minRange = 0.0f;
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float maxRange = 0.0f;
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float rangeMod = 0.0f;
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if (_spellInfo.RangeEntry != null)
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{
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if (_spellInfo.RangeEntry.Flags.HasAnyFlag(SpellRangeFlag.Melee))
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{
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rangeMod = _caster.GetCombatReach() + 4.0f / 3.0f;
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rangeMod += target.GetCombatReach();
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rangeMod = Math.Max(rangeMod, SharedConst.NominalMeleeRange);
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}
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else
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{
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float meleeRange = 0.0f;
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if (_spellInfo.RangeEntry.Flags.HasAnyFlag(SpellRangeFlag.Ranged))
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{
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meleeRange = _caster.GetCombatReach() + 4.0f / 3.0f;
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meleeRange += target.GetCombatReach();
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meleeRange = Math.Max(meleeRange, SharedConst.NominalMeleeRange);
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}
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minRange = _caster.GetSpellMinRangeForTarget(target, _spellInfo) + meleeRange;
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maxRange = _caster.GetSpellMaxRangeForTarget(target, _spellInfo);
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rangeMod = _caster.GetCombatReach();
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rangeMod += target.GetCombatReach();
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if (minRange > 0.0f && !_spellInfo.RangeEntry.Flags.HasAnyFlag(SpellRangeFlag.Ranged))
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minRange += rangeMod;
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}
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if (_caster.isMoving() && target.isMoving() && !_caster.IsWalking() && !target.IsWalking() &&
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(_spellInfo.RangeEntry.Flags.HasAnyFlag(SpellRangeFlag.Melee) || target.IsTypeId(TypeId.Player)))
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rangeMod += 8.0f / 3.0f;
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}
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maxRange += rangeMod;
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minRange *= minRange;
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maxRange *= maxRange;
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if (target != _caster)
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{
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|
if (_caster.GetExactDistSq(target) > maxRange)
|
|
return false;
|
|
|
|
if (minRange > 0.0f && _caster.GetExactDistSq(target) < minRange)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
Unit _caster;
|
|
SpellInfo _spellInfo;
|
|
}
|
|
|
|
// Very simple target selector, will just skip main target
|
|
// NOTE: When passing to UnitAI.SelectTarget remember to use 0 as position for random selection
|
|
// because tank will not be in the temporary list
|
|
public class NonTankTargetSelector : ISelector
|
|
{
|
|
public NonTankTargetSelector(Unit source, bool playerOnly = true)
|
|
{
|
|
_source = source;
|
|
_playerOnly = playerOnly;
|
|
}
|
|
|
|
public bool Check(Unit target)
|
|
{
|
|
if (target == null)
|
|
return false;
|
|
|
|
if (_playerOnly && !target.IsTypeId(TypeId.Player))
|
|
return false;
|
|
|
|
HostileReference currentVictim = _source.GetThreatManager().getCurrentVictim();
|
|
if (currentVictim != null)
|
|
return target.GetGUID() != currentVictim.getUnitGuid();
|
|
|
|
return target != _source.GetVictim();
|
|
}
|
|
|
|
Unit _source;
|
|
bool _playerOnly;
|
|
}
|
|
}
|