using Barotrauma.Extensions;
using Barotrauma.Items.Components;
using Barotrauma.Networking; // used by the server
using Microsoft.Xna.Framework;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Barotrauma
{
    class AIObjectiveManager
    {
        public const float HighestOrderPriority = 70;
        public const float LowestOrderPriority = 60;
        public const float RunPriority = 50;
        // Constantly increases the priority of the selected objective, unless overridden
        public const float baseDevotion = 5;

        /// <summary>
        /// Excluding the current order.
        /// </summary>
        public List<AIObjective> Objectives { get; private set; } = new List<AIObjective>();

        private readonly Character character;

        public HumanAIController HumanAIController => character.AIController as HumanAIController;

        private float _waitTimer;
        /// <summary>
        /// When set above zero, the character will stand still doing nothing until the timer runs out. Does not affect orders, find safety or combat.
        /// </summary>
        public float WaitTimer
        {
            get { return _waitTimer; }
            set
            {
                _waitTimer = IsAllowedToWait() ? value : 0;
            }
        }

        public List<OrderInfo> CurrentOrders { get; } = new List<OrderInfo>();
        /// <summary>
        /// The AIObjective in <see cref="CurrentOrders"/> with the highest <see cref="AIObjective.Priority"/>
        /// </summary>
        public AIObjective CurrentOrder
        {
            get
            {
                return ForcedOrder ?? currentOrder;
            }
            private set
            {
                currentOrder = value;
            }
        }
        private AIObjective currentOrder;
        public AIObjective ForcedOrder { get; private set; }
        public AIObjective CurrentObjective { get; private set; }

        public AIObjectiveManager(Character character)
        {
            this.character = character;
            CreateAutonomousObjectives();
        }

        public void AddObjective(AIObjective objective)
		{
            AddObjective<AIObjective>(objective);
		}

        public void AddObjective<T>(T objective) where T : AIObjective
        {
            var result = new LuaResult(GameMain.Lua.hook.Call("AI.AddObjective", this, objective));

            if (result.Bool()) return;

            if (objective == null)
            {
#if DEBUG
                DebugConsole.ThrowError("Attempted to add a null objective to AIObjectiveManager\n" + Environment.StackTrace.CleanupStackTrace());
#endif
                return;
            }
            // Can't use the generic type, because it's possible that the user of this method uses the base type AIObjective.
            // We need to get the highest type.
            var type = objective.GetType();
            if (objective.AllowMultipleInstances)
            {
                if (Objectives.FirstOrDefault(o => o.GetType() == type) is T existingObjective && existingObjective.IsDuplicate(objective))
                {
                    Objectives.Remove(existingObjective);
                }
            }
            else
            {
                Objectives.RemoveAll(o => o.GetType() == type);
            }
            Objectives.Add(objective);
        }

        public Dictionary<AIObjective, CoroutineHandle> DelayedObjectives { get; private set; } = new Dictionary<AIObjective, CoroutineHandle>();
        public bool FailedAutonomousObjectives { get; private set; }

        private void ClearIgnored()
        {
            if (character.AIController is HumanAIController humanAi)
            {
                humanAi.UnreachableHulls.Clear();
                humanAi.IgnoredItems.Clear();
            }
        }

        public void CreateAutonomousObjectives()
        {
            if (character.IsDead)
            {
#if DEBUG
                DebugConsole.ThrowError("Attempted to create autonomous orders for a dead character");
#else
                return;
#endif
            }
            foreach (var delayedObjective in DelayedObjectives)
            {
                CoroutineManager.StopCoroutines(delayedObjective.Value);
            }
            DelayedObjectives.Clear();
            Objectives.Clear();
            FailedAutonomousObjectives = false;
            AddObjective(new AIObjectiveFindSafety(character, this));
            AddObjective(new AIObjectiveIdle(character, this));
            int objectiveCount = Objectives.Count;
            foreach (var autonomousObjective in character.Info.Job.Prefab.AutonomousObjectives)
            {
                var orderPrefab = Order.GetPrefab(autonomousObjective.identifier);
                if (orderPrefab == null) { throw new Exception($"Could not find a matching prefab by the identifier: '{autonomousObjective.identifier}'"); }
                Item item = null;
                if (orderPrefab.MustSetTarget)
                {
                    item = orderPrefab.GetMatchingItems(character.Submarine, mustBelongToPlayerSub: false, requiredTeam: character.Info.TeamID, interactableFor: character)?.GetRandom();
                }
                var order = new Order(orderPrefab, item ?? character.CurrentHull as Entity, orderPrefab.GetTargetItemComponent(item), orderGiver: character);
                if (order == null) { continue; }
                if ((order.IgnoreAtOutpost || autonomousObjective.ignoreAtOutpost) && Level.IsLoadedOutpost && character.TeamID != CharacterTeamType.FriendlyNPC)
                {
                    if (Submarine.MainSub != null && Submarine.MainSub.DockedTo.None(s => s.TeamID != CharacterTeamType.FriendlyNPC && s.TeamID != character.TeamID))
                    {
                        continue;
                    }
                }
                var objective = CreateObjective(order, autonomousObjective.option, character, autonomousObjective.priorityModifier);
                if (objective != null && objective.CanBeCompleted)
                {
                    AddObjective(objective, delay: Rand.Value() / 2);
                    objectiveCount++;
                }
            }
            _waitTimer = Math.Max(_waitTimer, Rand.Range(0.5f, 1f) * objectiveCount);
        }

        public void AddObjective<T>(T objective, float delay, Action callback = null) where T : AIObjective
        {
            if (objective == null)
            {
#if DEBUG
                DebugConsole.ThrowError($"{character.Name}: Attempted to add a null objective to AIObjectiveManager\n" + Environment.StackTrace.CleanupStackTrace());
#endif
                return;
            }
            if (DelayedObjectives.TryGetValue(objective, out CoroutineHandle coroutine))
            {
                CoroutineManager.StopCoroutines(coroutine);
                DelayedObjectives.Remove(objective);
            }
            coroutine = CoroutineManager.Invoke(() =>
            {
                //round ended before the coroutine finished
#if CLIENT
                if (GameMain.GameSession == null || Level.Loaded == null && !(GameMain.GameSession.GameMode is TestGameMode)) { return; }
#else
                if (GameMain.GameSession == null || Level.Loaded == null) { return; }
#endif
                DelayedObjectives.Remove(objective);
                AddObjective(objective);
                callback?.Invoke();
            }, delay);
            DelayedObjectives.Add(objective, coroutine);
        }

        public T GetObjective<T>() where T : AIObjective => Objectives.FirstOrDefault(o => o is T) as T;

        private AIObjective GetCurrentObjective()
        {
            var previousObjective = CurrentObjective;
            var firstObjective = Objectives.FirstOrDefault();
            bool currentObjectiveIsOrder = CurrentOrder != null && firstObjective != null && CurrentOrder.Priority > firstObjective.Priority;
            if (currentObjectiveIsOrder)
            {
                CurrentObjective = CurrentOrder;
            }
            else
            {
                CurrentObjective = firstObjective;
            }
            if (previousObjective != CurrentObjective)
            {
                previousObjective?.OnDeselected();
                CurrentObjective?.OnSelected();
                GetObjective<AIObjectiveIdle>().CalculatePriority(Math.Max(CurrentObjective.Priority - 10, 0));
                if (GameMain.NetworkMember != null && GameMain.NetworkMember.IsServer)
                {
                    GameMain.NetworkMember.CreateEntityEvent(character, new object[]
                    {
                        NetEntityEvent.Type.ObjectiveManagerState,
                        currentObjectiveIsOrder ? "order" : "objective"
                    });
                }
            }
            return CurrentObjective;
        }

        public float GetCurrentPriority()
        {
            return CurrentObjective == null ? 0.0f : CurrentObjective.Priority;
        }

        public void UpdateObjectives(float deltaTime)
        {
            UpdateOrderObjective(ForcedOrder);

            if (CurrentOrders.Any())
            {
                foreach(var order in CurrentOrders)
                {
                    var orderObjective = order.Objective;
                    UpdateOrderObjective(orderObjective);
                }
            }

            void UpdateOrderObjective(AIObjective orderObjective)
            {
                if (orderObjective == null) { return; }
#if DEBUG
                // Note: don't automatically remove orders here. Removing orders needs to be done via dismissing.
                if (!orderObjective.CanBeCompleted)
                {
                    DebugConsole.NewMessage($"{character.Name}: ORDER {orderObjective.DebugTag}, CANNOT BE COMPLETED.", Color.Red);
                }
#endif
                orderObjective.Update(deltaTime);
            }

            if (WaitTimer > 0)
            {
                WaitTimer -= deltaTime;
                return;
            }
            for (int i = 0; i < Objectives.Count; i++)
            {
                var objective = Objectives[i];
                if (objective.IsCompleted)
                {
#if DEBUG
                    DebugConsole.NewMessage($"{character.Name}: Removing objective {objective.DebugTag}, because it is completed.", Color.LightBlue);
#endif
                    Objectives.Remove(objective);
                }
                else if (!objective.CanBeCompleted)
                {
#if DEBUG
                    DebugConsole.NewMessage($"{character.Name}: Removing objective {objective.DebugTag}, because it cannot be completed.", Color.Red);
#endif
                    Objectives.Remove(objective);
                    FailedAutonomousObjectives = true;
                }
                else
                {
                    objective.Update(deltaTime);
                }
            }
            GetCurrentObjective();
        }

        public void SortObjectives()
        {
            ForcedOrder?.CalculatePriority();
            AIObjective orderWithHighestPriority = null;
            float highestPriority = 0;
            for (int i = CurrentOrders.Count - 1; i >= 0; i--)
            {
                var orderObjective = CurrentOrders[i].Objective;
                if (orderObjective == null) { continue; }
                orderObjective.CalculatePriority();
                if (orderWithHighestPriority == null || orderObjective.Priority > highestPriority)
                {
                    orderWithHighestPriority = orderObjective;
                    highestPriority = orderObjective.Priority;
                }
            }
            CurrentOrder = orderWithHighestPriority;
            for (int i = Objectives.Count - 1; i >= 0; i--)
            {
                Objectives[i].CalculatePriority();
            }
            if (Objectives.Any())
            {
                Objectives.Sort((x, y) => y.Priority.CompareTo(x.Priority));
            }
            GetCurrentObjective()?.SortSubObjectives();
        }

        public void DoCurrentObjective(float deltaTime)
        {
            if (WaitTimer <= 0)
            {
                CurrentObjective?.TryComplete(deltaTime);
            }
            else
            {
                character.AIController.SteeringManager.Reset();
            }
        }

        public void SetForcedOrder(AIObjective objective)
        {
            ForcedOrder = objective;
        }

        public void ClearForcedOrder()
        {
            ForcedOrder = null;
            SortObjectives();
        }

        private CoroutineHandle speakRoutine;
        public void SetOrder(Order order, string option, int priority, Character orderGiver, bool speak)
        {
            if (character.IsDead)
            {
#if DEBUG
                DebugConsole.ThrowError("Attempted to set an order for a dead character");
#else
                return;
#endif
            }
            ClearIgnored();

            if (order == null || order.Identifier == "dismissed")
            {
                if (!string.IsNullOrEmpty(option))
                {
                    if (CurrentOrders.Any(o => o.MatchesDismissedOrder(option)))
                    {
                        var dismissedOrderInfo = CurrentOrders.First(o => o.MatchesDismissedOrder(option));
                        CurrentOrders.Remove(dismissedOrderInfo);
                    }
                }
                else
                {
                    CurrentOrders.Clear();
                }
            }

            // Make sure the order priorities reflect those set by the player
            for (int i = CurrentOrders.Count - 1; i >= 0; i--)
            {
                var currentOrder = CurrentOrders[i];
                if (currentOrder.Objective == null || currentOrder.MatchesOrder(order, option))
                {
                    CurrentOrders.RemoveAt(i);
                    continue;
                }
                var currentOrderInfo = character.GetCurrentOrder(currentOrder.Order, currentOrder.OrderOption);
                if (currentOrderInfo.HasValue)
                {
                    int currentPriority = currentOrderInfo.Value.ManualPriority;
                    if (currentOrder.ManualPriority != currentPriority)
                    {
                        CurrentOrders[i] = new OrderInfo(currentOrder, currentPriority);
                    }
                }
                else
                {
                    CurrentOrders.RemoveAt(i);
                }
            }

            var newCurrentOrder = CreateObjective(order, option, orderGiver);
            if (newCurrentOrder != null)
            {
                CurrentOrders.Add(new OrderInfo(order, option, priority, newCurrentOrder));
            }
            if (!HasOrders())
            {
                // Recreate objectives, because some of them may be removed, if impossible to complete (e.g. due to path finding)
                CreateAutonomousObjectives();
            }
            else
            {
                // This should be redundant, because all the objectives are reset when they are selected as active.
                newCurrentOrder?.Reset();

                if (speak && character.IsOnPlayerTeam)
                {
                    character.Speak(TextManager.Get("DialogAffirmative"), null, 1.0f);
                    //if (speakRoutine != null)
                    //{
                    //    CoroutineManager.StopCoroutines(speakRoutine);
                    //}
                    //speakRoutine = CoroutineManager.InvokeAfter(() =>
                    //{
                    //    if (GameMain.GameSession == null || Level.Loaded == null) { return; }
                    //    if (newCurrentOrder != null && character.SpeechImpediment < 100.0f)
                    //    {
                    //        if (newCurrentOrder is AIObjectiveRepairItems repairItems && repairItems.Targets.None())
                    //        {
                    //            character.Speak(TextManager.Get("DialogNoRepairTargets"), null, 3.0f, "norepairtargets");
                    //        }
                    //        else if (newCurrentOrder is AIObjectiveChargeBatteries chargeBatteries && chargeBatteries.Targets.None())
                    //        {
                    //            character.Speak(TextManager.Get("DialogNoBatteries"), null, 3.0f, "nobatteries");
                    //        }
                    //        else if (newCurrentOrder is AIObjectiveExtinguishFires extinguishFires && extinguishFires.Targets.None())
                    //        {
                    //            character.Speak(TextManager.Get("DialogNoFire"), null, 3.0f, "nofire");
                    //        }
                    //        else if (newCurrentOrder is AIObjectiveFixLeaks fixLeaks && fixLeaks.Targets.None())
                    //        {
                    //            character.Speak(TextManager.Get("DialogNoLeaks"), null, 3.0f, "noleaks");
                    //        }
                    //        else if (newCurrentOrder is AIObjectiveFightIntruders fightIntruders && fightIntruders.Targets.None())
                    //        {
                    //            character.Speak(TextManager.Get("DialogNoEnemies"), null, 3.0f, "noenemies");
                    //        }
                    //        else if (newCurrentOrder is AIObjectiveRescueAll rescueAll && rescueAll.Targets.None())
                    //        {
                    //            character.Speak(TextManager.Get("DialogNoRescueTargets"), null, 3.0f, "norescuetargets");
                    //        }
                    //        else if (newCurrentOrder is AIObjectivePumpWater pumpWater && pumpWater.Targets.None())
                    //        {
                    //            character.Speak(TextManager.Get("DialogNoPumps"), null, 3.0f, "nopumps");
                    //        }
                    //    }
                    //}, 3);
                }
            }
        }

        public AIObjective CreateObjective(Order order, string option, Character orderGiver, float priorityModifier = 1)
        {
            if (order == null || order.Identifier == "dismissed") { return null; }
            AIObjective newObjective;
            switch (order.Identifier.ToLowerInvariant())
            {
                case "follow":
                    if (orderGiver == null) { return null; }
                    newObjective = new AIObjectiveGoTo(orderGiver, character, this, repeat: true, priorityModifier: priorityModifier)
                    {
                        CloseEnough = Rand.Range(90, 100) + Rand.Range(50, 70) * Math.Min(HumanAIController.CountCrew(c => c.ObjectiveManager.CurrentOrder is AIObjectiveGoTo gotoOrder && gotoOrder.Target == orderGiver, onlyBots: true), 4),
                        extraDistanceOutsideSub = 100,
                        extraDistanceWhileSwimming = 100,
                        AllowGoingOutside = true,
                        IgnoreIfTargetDead = true,
                        isFollowOrderObjective = true,
                        mimic = true,
                        DialogueIdentifier = "dialogcannotreachplace"
                    };
                    break;
                case "wait":
                    newObjective = new AIObjectiveGoTo(order.TargetSpatialEntity ?? character, character, this, repeat: true, priorityModifier: priorityModifier)
                    {
                        AllowGoingOutside = character.Submarine == null || (order.TargetSpatialEntity != null && character.Submarine != order.TargetSpatialEntity.Submarine)
                    };
                    break;
                case "return":
                    newObjective = new AIObjectiveReturn(character, orderGiver, this, priorityModifier: priorityModifier);
                    newObjective.Abandoned += () => DismissSelf(order, option);
                    newObjective.Completed += () => DismissSelf(order, option);
                    break;
                case "fixleaks":
                    newObjective = new AIObjectiveFixLeaks(character, this, priorityModifier: priorityModifier, prioritizedHull: order.TargetEntity as Hull);
                    break;
                case "chargebatteries":
                    newObjective = new AIObjectiveChargeBatteries(character, this, option, priorityModifier);
                    break;
                case "rescue":
                    newObjective = new AIObjectiveRescueAll(character, this, priorityModifier);
                    break;
                case "repairsystems":
                case "repairmechanical":
                case "repairelectrical":
                    newObjective = new AIObjectiveRepairItems(character, this, priorityModifier: priorityModifier, prioritizedItem: order.TargetEntity as Item)
                    {
                        RelevantSkill = order.AppropriateSkill,
                    };
                    break;
                case "pumpwater":
                    if (order.TargetItemComponent is Pump targetPump)
                    {
                        if (!order.TargetItemComponent.Item.IsInteractable(character)) { return null; }
                        newObjective = new AIObjectiveOperateItem(targetPump, character, this, option, false, priorityModifier: priorityModifier)
                        {
                            IsLoop = true,
                            Override = orderGiver != null && orderGiver.IsCommanding
                        };
                        // ItemComponent.AIOperate() returns false by default -> We'd have to set IsLoop = false and implement a custom override of AIOperate for the Pump.cs, 
                        // if we want that the bot just switches the pump on/off and continues doing something else.
                        // If we want that the bot does the objective and then forgets about it, I think we could do the same plus dismiss when the bot is done.
                    }
                    else
                    {
                        newObjective = new AIObjectivePumpWater(character, this, option, priorityModifier: priorityModifier);
                    }
                    break;
                case "extinguishfires":
                    newObjective = new AIObjectiveExtinguishFires(character, this, priorityModifier);
                    break;
                case "fightintruders":
                    newObjective = new AIObjectiveFightIntruders(character, this, priorityModifier);
                    break;
                case "steer":
                    var steering = (order?.TargetEntity as Item)?.GetComponent<Steering>();
                    if (steering != null) { steering.PosToMaintain = steering.Item.Submarine?.WorldPosition; }
                    if (order.TargetItemComponent == null) { return null; }
                    if (!order.TargetItemComponent.Item.IsInteractable(character)) { return null; }
                    newObjective = new AIObjectiveOperateItem(order.TargetItemComponent, character, this, option,
                        requireEquip: false, useController: order.UseController, controller: order.ConnectedController, priorityModifier: priorityModifier)
                    {
                        IsLoop = true,
                        // Don't override unless it's an order by a player
                        Override = orderGiver != null && orderGiver.IsCommanding 
                    };
                    break;
                case "setchargepct":
                    newObjective = new AIObjectiveOperateItem(order.TargetItemComponent, character, this, option, false, priorityModifier: priorityModifier)
                    {
                        IsLoop = false,
                        Override = !character.IsDismissed,
                        completionCondition = () =>
                        {
                            if (float.TryParse(option, out float pct))
                            {
                                var targetRatio = Math.Clamp(pct, 0f, 1f);
                                var currentRatio = (order.TargetItemComponent as PowerContainer).RechargeRatio;
                                return Math.Abs(targetRatio - currentRatio) < 0.05f;
                            }
                            return true;
                        }
                    };
                    break;
                case "getitem":
                    newObjective = new AIObjectiveGetItem(character, order.TargetEntity as Item ?? order.TargetItemComponent?.Item, this, false, priorityModifier: priorityModifier)
                    {
                        MustBeSpecificItem = true
                    };
                    break;
                case "cleanupitems":
                    if (order.TargetEntity is Item targetItem)
                    {
                        if (targetItem.HasTag("allowcleanup") && targetItem.ParentInventory == null && targetItem.OwnInventory != null)
                        {
                            // Target all items inside the container
                            newObjective = new AIObjectiveCleanupItems(character, this, targetItem.OwnInventory.AllItems, priorityModifier);
                        }
                        else
                        {
                            newObjective = new AIObjectiveCleanupItems(character, this, targetItem, priorityModifier);
                        }
                    }
                    else
                    {
                        newObjective = new AIObjectiveCleanupItems(character, this, priorityModifier: priorityModifier);
                    }
                    break;
                case "escapehandcuffs":
                    newObjective = new AIObjectiveEscapeHandcuffs(character, this, priorityModifier: priorityModifier);
                    break;
                default:
                    if (order.TargetItemComponent == null) { return null; }
                    if (!order.TargetItemComponent.Item.IsInteractable(character)) { return null; }
                    newObjective = new AIObjectiveOperateItem(order.TargetItemComponent, character, this, option,
                        requireEquip: false, useController: order.UseController, controller: order.ConnectedController, priorityModifier: priorityModifier)
                    {
                        IsLoop = true,
                        // Don't override unless it's an order by a player
                        Override = orderGiver != null && orderGiver.IsCommanding
                    };
                    if (newObjective.Abandon) { return null; }
                    break;
            }
            if (newObjective != null)
            {
                newObjective.Identifier = order.Identifier;
            }
            newObjective.IgnoreAtOutpost = order.IgnoreAtOutpost;
            return newObjective;
        }

        private void DismissSelf(Order order, string option)
        {
            var currentOrder = CurrentOrders.FirstOrDefault(oi => oi.MatchesOrder(order, option));
            if (currentOrder.Order == null)
            {
#if DEBUG
                DebugConsole.ThrowError("Tried to self-dismiss an order, but no matching current order was found");
#endif
                return;
            }
#if CLIENT
            if (GameMain.GameSession?.CrewManager != null && GameMain.GameSession.CrewManager.IsSinglePlayer)
            {
                GameMain.GameSession?.CrewManager?.SetCharacterOrder(character, Order.GetPrefab("dismissed"), Order.GetDismissOrderOption(currentOrder), currentOrder.ManualPriority, character);
            }
#else
            GameMain.Server?.SendOrderChatMessage(new OrderChatMessage(Order.GetPrefab("dismissed"), Order.GetDismissOrderOption(currentOrder), currentOrder.ManualPriority, currentOrder.Order?.TargetSpatialEntity, character, character));
#endif
        }


        private bool IsAllowedToWait()
        {
            if (!character.IsOnPlayerTeam) { return false; }
            if (HasOrders()) { return false; }
            if (CurrentObjective is AIObjectiveCombat || CurrentObjective is AIObjectiveFindSafety) { return false; }
            if (character.AnimController.InWater) { return false; }
            if (character.IsClimbing) { return false; }
            if (character.AIController is HumanAIController humanAI)
            {
                if (humanAI.UnsafeHulls.Contains(character.CurrentHull)) { return false; }
            }
            if (AIObjectiveIdle.IsForbidden(character.CurrentHull)) { return false; }
            return true;
        }

        public bool IsCurrentOrder<T>() where T : AIObjective => CurrentOrder is T;
        public bool IsCurrentObjective<T>() where T : AIObjective => CurrentObjective is T;
        public bool IsActiveObjective<T>() where T : AIObjective => GetActiveObjective() is T;

        public AIObjective GetActiveObjective() => CurrentObjective?.GetActiveObjective();
        public T GetOrder<T>() where T : AIObjective => CurrentOrders.FirstOrDefault(o => o.Objective is T).Objective as T;

        /// <summary>
        /// Returns the last active objective of the specific type.
        /// </summary>
        public T GetActiveObjective<T>() where T : AIObjective => CurrentObjective?.GetSubObjectivesRecursive(includingSelf: true).LastOrDefault(so => so is T) as T;

        /// <summary>
        /// Returns all active objectives of the specific type. Creates a new collection -> don't use too frequently.
        /// </summary>
        public IEnumerable<T> GetActiveObjectives<T>() where T : AIObjective
        {
            if (CurrentObjective == null) { return Enumerable.Empty<T>(); }
            return CurrentObjective.GetSubObjectivesRecursive(includingSelf: true).Where(so => so is T).Select(so => so as T);
        }

        public bool HasActiveObjective<T>() where T : AIObjective => CurrentObjective is T || CurrentObjective != null && CurrentObjective.GetSubObjectivesRecursive().Any(so => so is T);

        public bool IsOrder(AIObjective objective)
        {
            return objective == ForcedOrder || CurrentOrders.Any(o => o.Objective == objective);
        }

        public bool HasOrders()
        {
            return ForcedOrder != null || CurrentOrders.Any();
        }

        public bool HasOrder<T>() where T : AIObjective
        {
            return ForcedOrder is T || CurrentOrders.Any(o => o.Objective is T);
        }

        public float GetOrderPriority(AIObjective objective)
        {
            if (objective == ForcedOrder)
            {
                return HighestOrderPriority;
            }
            var currentOrder = CurrentOrders.FirstOrDefault(o => o.Objective == objective);
            if (currentOrder.Objective == null)
            {
                return HighestOrderPriority;
            }
            else if (currentOrder.ManualPriority > 0)
            {
                if (objective.ForceHighestPriority)
                {
                    return HighestOrderPriority;
                }
                if (objective.PrioritizeIfSubObjectivesActive && objective.SubObjectives.Any())
                {
                    return HighestOrderPriority;
                }
                return MathHelper.Lerp(LowestOrderPriority, HighestOrderPriority - 1, MathUtils.InverseLerp(1, CharacterInfo.HighestManualOrderPriority, currentOrder.ManualPriority));
            }
#if DEBUG
            DebugConsole.AddWarning("Error in order priority: shouldn't return 0!");
#endif
            return 0;
        }

        public OrderInfo? GetCurrentOrderInfo()
        {
            if (currentOrder == null) { return null; }
            return CurrentOrders.FirstOrDefault(o => o.Objective == CurrentOrder);
        }
    }
}