using Barotrauma.Items.Components;
using Barotrauma.Networking;
using FarseerPhysics;
using Microsoft.Xna.Framework;
using System;
using System.Collections.Immutable;
using System.Linq;

namespace Barotrauma
{
    partial class Character
    {
        partial void UpdateNetInput()
        {
            if (GameMain.Client != null)
            {
                if (this != Controlled)
                {
                    if (GameMain.Client.EndCinematic != null && 
                        GameMain.Client.EndCinematic.Running) // Freezes the characters during the ending cinematic
                    {
                        AnimController.Frozen = true;
                        memState.Clear();
                        return;
                    }

                    //freeze AI characters if more than x seconds have passed since last update from the server
                    if (lastRecvPositionUpdateTime < Lidgren.Network.NetTime.Now - NetConfig.FreezeCharacterIfPositionDataMissingDelay)
                    {
                        AnimController.Frozen = true;
                        memState.Clear();
                        //hide after y seconds
                        if (lastRecvPositionUpdateTime < Lidgren.Network.NetTime.Now - NetConfig.DisableCharacterIfPositionDataMissingDelay)
                        {
                            Enabled = false;
                            return;
                        }
                    }
                }
                else
                {
                    var posInfo = new CharacterStateInfo(
                        SimPosition,
                        AnimController.Collider.Rotation,
                        LastNetworkUpdateID,
                        AnimController.TargetDir,
                        SelectedCharacter,
                        SelectedItem,
                        SelectedSecondaryItem,
                        AnimController.TargetMovement,
                        AnimController.Anim);

                    memLocalState.Add(posInfo);

                    InputNetFlags newInput = InputNetFlags.None;
                    if (IsKeyDown(InputType.Left)) newInput |= InputNetFlags.Left;
                    if (IsKeyDown(InputType.Right)) newInput |= InputNetFlags.Right;
                    if (IsKeyDown(InputType.Up)) newInput |= InputNetFlags.Up;
                    if (IsKeyDown(InputType.Down)) newInput |= InputNetFlags.Down;
                    if (IsKeyDown(InputType.Run) || ToggleRun) newInput |= InputNetFlags.Run;
                    if (IsKeyDown(InputType.Crouch)) newInput |= InputNetFlags.Crouch;
                    if (IsKeyHit(InputType.Select)) newInput |= InputNetFlags.Select; //TODO: clean up the way this input is registered
                    if (IsKeyHit(InputType.Deselect)) newInput |= InputNetFlags.Deselect;
                    if (IsKeyHit(InputType.Health)) newInput |= InputNetFlags.Health;
                    if (IsKeyHit(InputType.Grab)) newInput |= InputNetFlags.Grab;
                    if (IsKeyDown(InputType.Use)) newInput |= InputNetFlags.Use;
                    if (IsKeyDown(InputType.Aim)) newInput |= InputNetFlags.Aim;
                    if (IsKeyDown(InputType.Shoot)) newInput |= InputNetFlags.Shoot;
                    if (IsKeyDown(InputType.Attack)) newInput |= InputNetFlags.Attack;
                    if (IsKeyDown(InputType.Ragdoll)) newInput |= InputNetFlags.Ragdoll;

                    if (AnimController.Dir < 0) newInput |= InputNetFlags.FacingLeft;

                    Vector2 relativeCursorPos = cursorPosition - AimRefPosition;
                    relativeCursorPos.Normalize();
                    UInt16 intAngle = (UInt16)(65535.0 * Math.Atan2(relativeCursorPos.Y, relativeCursorPos.X) / (2.0 * Math.PI));

                    NetInputMem newMem = new NetInputMem
                    {
                        states = newInput,
                        intAim = intAngle
                    };

                    if (FocusedCharacter != null && 
                        FocusedCharacter.CampaignInteractionType != CampaignMode.InteractionType.None && 
                        newMem.states.HasFlag(InputNetFlags.Use))
                    {
                        newMem.interact = FocusedCharacter.ID;
                    }
                    else if (newMem.states.HasFlag(InputNetFlags.Use) && (FocusedCharacter?.IsPet ?? false))
                    {
                        newMem.interact = FocusedCharacter.ID;
                    }
                    else if (focusedItem != null && !CharacterInventory.DraggingItemToWorld &&
                        !newMem.states.HasFlag(InputNetFlags.Grab) && !newMem.states.HasFlag(InputNetFlags.Health))
                    {
                        newMem.interact = focusedItem.ID;
                    }
                    else if (FocusedCharacter != null)
                    {
                        newMem.interact = FocusedCharacter.ID;
                    }

                    memInput.Insert(0, newMem);
                    LastNetworkUpdateID++;
                    if (memInput.Count > 60)
                    {
                        memInput.RemoveRange(60, memInput.Count - 60);
                    }
                }
            }
            else //this == Character.Controlled && GameMain.Client == null
            {
                AnimController.Frozen = false;
            }
        }

        public void ClientWriteInput(in SegmentTableWriter<ClientNetSegment> segmentTableWriter, IWriteMessage msg)
        {
            segmentTableWriter.StartNewSegment(ClientNetSegment.CharacterInput);

            if (memInput.Count > 60)
            {
                memInput.RemoveRange(60, memInput.Count - 60);
            }

            msg.WriteUInt16(LastNetworkUpdateID);
            byte inputCount = Math.Min((byte)memInput.Count, (byte)60);
            msg.WriteByte(inputCount);
            for (int i = 0; i < inputCount; i++)
            {
                msg.WriteRangedInteger((int)memInput[i].states, 0, (int)InputNetFlags.MaxVal);
                msg.WriteUInt16(memInput[i].intAim);
                if (memInput[i].states.HasFlag(InputNetFlags.Select) ||
                    memInput[i].states.HasFlag(InputNetFlags.Deselect) ||
                    memInput[i].states.HasFlag(InputNetFlags.Use) ||
                    memInput[i].states.HasFlag(InputNetFlags.Health) ||
                    memInput[i].states.HasFlag(InputNetFlags.Grab))
                {
                    msg.WriteUInt16(memInput[i].interact);
                }
            }
        }
        
        public virtual void ClientEventWrite(IWriteMessage msg, NetEntityEvent.IData extraData = null)
        {
            if (extraData is not IEventData eventData) { throw new Exception($"Malformed character event: expected {nameof(Character)}.{nameof(IEventData)}"); }
            
            msg.WriteRangedInteger((int)eventData.EventType, (int)EventType.MinValue, (int)EventType.MaxValue);
            switch (eventData)
            {
                case InventoryStateEventData inventoryStateEventData:
                    Inventory.ClientEventWrite(msg, inventoryStateEventData);
                    break;
                case TreatmentEventData _:
                    msg.WriteBoolean(AnimController.Anim == AnimController.Animation.CPR);
                    break;
                case ConfirmRefundEventData _:
                    //do nothing
                    break;
                case CharacterStatusEventData _:
                    //do nothing
                    break;
                case UpdateTalentsEventData _:
                    msg.WriteUInt16((ushort)characterTalents.Count);
                    foreach (var unlockedTalent in characterTalents)
                    {
                        msg.WriteUInt32(unlockedTalent.Prefab.UintIdentifier);
                    }
                    break;
                default:
                    throw new Exception($"Malformed character event: did not expect {eventData.GetType().Name}");
            }
        }

        public void ClientReadPosition(IReadMessage msg, float sendingTime)
        {
            bool facingRight = AnimController.Dir > 0.0f;

            lastRecvPositionUpdateTime = (float)Lidgren.Network.NetTime.Now;

            AnimController.Frozen = false;
            Enabled = true;
            //if we start receiving position updates, it means the character's no longer disabled
            if (DisabledByEvent && !Removed)
            {
                DisabledByEvent = false;
            }

            UInt16 networkUpdateID = 0;
            if (msg.ReadBoolean())
            {
                networkUpdateID = msg.ReadUInt16();
            }
            else
            {
                bool aimInput = msg.ReadBoolean();
                keys[(int)InputType.Aim].Held = aimInput;
                keys[(int)InputType.Aim].SetState(false, aimInput);

                bool shootInput = msg.ReadBoolean();
                keys[(int)InputType.Shoot].Held = shootInput;
                keys[(int)InputType.Shoot].SetState(false, shootInput);

                bool useInput = msg.ReadBoolean();
                keys[(int)InputType.Use].Held = useInput;
                keys[(int)InputType.Use].SetState(false, useInput);

                if (AnimController is HumanoidAnimController)
                {
                    bool crouching = msg.ReadBoolean();
                    keys[(int)InputType.Crouch].Held = crouching;
                    keys[(int)InputType.Crouch].SetState(false, crouching);
                }
                else if (AnimController is FishAnimController fishAnim)
                {
                    fishAnim.Reverse = msg.ReadBoolean();
                }

                bool attackInput = msg.ReadBoolean();
                keys[(int)InputType.Attack].Held = attackInput;
                keys[(int)InputType.Attack].SetState(false, attackInput);

                double aimAngle = msg.ReadUInt16() / 65535.0 * 2.0 * Math.PI;
                cursorPosition = AimRefPosition + new Vector2((float)Math.Cos(aimAngle), (float)Math.Sin(aimAngle)) * 500.0f;

                bool ragdollInput = msg.ReadBoolean();
                keys[(int)InputType.Ragdoll].Held = ragdollInput;
                keys[(int)InputType.Ragdoll].SetState(false, ragdollInput);

                facingRight = msg.ReadBoolean();
            }

            bool entitySelected = msg.ReadBoolean();
            Character selectedCharacter = null;
            Item selectedItem = null, selectedSecondaryItem = null;

            AnimController.Animation animation = AnimController.Animation.None;
            if (entitySelected)
            {
                ushort characterID = msg.ReadUInt16();
                ushort itemID = msg.ReadUInt16();
                ushort secondaryItemID = msg.ReadUInt16();
                selectedCharacter = FindEntityByID(characterID) as Character;
                selectedItem = FindEntityByID(itemID) as Item;
                selectedSecondaryItem = FindEntityByID(secondaryItemID) as Item;
                if (characterID != NullEntityID)
                {
                    bool doingCpr = msg.ReadBoolean();
                    if (doingCpr && SelectedCharacter != null)
                    {
                        animation = AnimController.Animation.CPR;
                    }
                }
            }

            Vector2 pos = new Vector2(
                msg.ReadSingle(),
                msg.ReadSingle());
            float MaxVel = NetConfig.MaxPhysicsBodyVelocity;
            Vector2 linearVelocity = new Vector2(
                msg.ReadRangedSingle(-MaxVel, MaxVel, 12),
                msg.ReadRangedSingle(-MaxVel, MaxVel, 12));
            linearVelocity = NetConfig.Quantize(linearVelocity, -MaxVel, MaxVel, 12);

            Vector2 targetMovement = new Vector2(
                msg.ReadRangedSingle(-Ragdoll.MAX_SPEED, Ragdoll.MAX_SPEED, 12),
                msg.ReadRangedSingle(-Ragdoll.MAX_SPEED, Ragdoll.MAX_SPEED, 12));
            targetMovement = NetConfig.Quantize(targetMovement, -Ragdoll.MAX_SPEED, Ragdoll.MAX_SPEED, 12);

            bool fixedRotation = msg.ReadBoolean();
            float? rotation = null;
            float? angularVelocity = null;
            if (!fixedRotation)
            {
                rotation = msg.ReadSingle();
                angularVelocity = msg.ReadSingle();
            }

            bool ignorePlatforms = msg.ReadBoolean();

            bool readStatus = msg.ReadBoolean();
            if (readStatus)
            {
                ReadStatus(msg);
                bool isEnemyAi = msg.ReadBoolean();
                if (isEnemyAi)
                {
                    byte aiState = msg.ReadByte();
                    if (AIController is EnemyAIController enemyAi)
                    {
                        enemyAi.State = (AIState)aiState;
                    }
                    else
                    {
                        DebugConsole.AddWarning($"Received enemy AI data for a character with no {nameof(EnemyAIController)}. Ignoring...");
                    }
                    bool isPet = msg.ReadBoolean();
                    if (isPet)
                    {
                        byte happiness = msg.ReadByte();
                        byte hunger = msg.ReadByte();
                        if (AIController is EnemyAIController { PetBehavior: PetBehavior petBehavior })
                        {
                            petBehavior.Happiness = (float)happiness / byte.MaxValue * petBehavior.MaxHappiness;
                            petBehavior.Hunger = (float)hunger / byte.MaxValue * petBehavior.MaxHunger;
                        }
                        else
                        {
                            DebugConsole.AddWarning($"Received pet AI data for a character with no {nameof(PetBehavior)}. Ignoring...");
                        }
                    }
                }
            }

            msg.ReadPadBits();

            int index = 0;
            if (GameMain.Client.Character == this)
            {
                var posInfo = new CharacterStateInfo(
                    pos, rotation,
                    networkUpdateID,
                    facingRight ? Direction.Right : Direction.Left,
                    selectedCharacter, selectedItem, selectedSecondaryItem, targetMovement, animation, ignorePlatforms);

                while (index < memState.Count && NetIdUtils.IdMoreRecent(posInfo.ID, memState[index].ID))
                    index++;
                memState.Insert(index, posInfo);
            }
            else
            {
                var posInfo = new CharacterStateInfo(
                    pos, rotation,
                    linearVelocity, angularVelocity,
                    sendingTime, facingRight ? Direction.Right : Direction.Left,
                    selectedCharacter, selectedItem, selectedSecondaryItem, targetMovement, animation, ignorePlatforms);

                while (index < memState.Count && posInfo.Timestamp > memState[index].Timestamp)
                    index++;
                memState.Insert(index, posInfo);
            }
        }
        
        public virtual void ClientEventRead(IReadMessage msg, float sendingTime)
        {
            EventType eventType = (EventType)msg.ReadRangedInteger((int)EventType.MinValue, (int)EventType.MaxValue);
            switch (eventType)
            {
                case EventType.InventoryState:
                    if (Inventory == null)
                    {
                        string errorMsg = "Received an inventory update message for an entity with no inventory ([name], removed: " + Removed + ")";
                        DebugConsole.ThrowError(errorMsg.Replace("[name]", Name));
                        GameAnalyticsManager.AddErrorEventOnce("CharacterNetworking.ClientRead:NoInventory" + ID, GameAnalyticsManager.ErrorSeverity.Error, errorMsg.Replace("[name]", SpeciesName.Value));

                        //read anyway to prevent messing up reading the rest of the message
                        _ = msg.ReadUInt16();
                        byte inventoryItemCount = msg.ReadByte();
                        for (int i = 0; i < inventoryItemCount; i++)
                        {
                            msg.ReadUInt16();
                        }
                    }
                    else
                    {
                        Inventory.ClientEventRead(msg);
                    }
                    break;
                case EventType.Control:
                    bool myCharacter = msg.ReadBoolean();
                    byte ownerID = msg.ReadByte();
                    bool renamingEnabled = msg.ReadBoolean();
                    ResetNetState();
                    if (myCharacter)
                    {
                        if (controlled != null)
                        {
                            LastNetworkUpdateID = controlled.LastNetworkUpdateID;
                        }

                        if (!IsDead) { Controlled = this; }
                        IsRemotePlayer = false;
                        GameMain.Client.HasSpawned = true;
                        GameMain.Client.Character = this;
                        GameMain.LightManager.LosEnabled = true;
#if DEBUG
                        GameMain.LightManager.LosEnabled = !GameMain.DevMode;
#endif
                        GameMain.LightManager.LosAlpha = 1f;
                        GameMain.Client.WaitForNextRoundRespawn = null;
                    }
                    else
                    {
                        if (controlled == this)
                        {
                            Controlled = null;
                        }
                        if (GameMain.Client?.Character == this)
                        {
                            GameMain.Client.Character = null;
                        }
                        IsRemotePlayer = ownerID > 0;
                    }
                    if (info != null)
                    {
                        info.RenamingEnabled = renamingEnabled;
                    }
                    break;
                case EventType.Status:
                    ReadStatus(msg);
                    GodMode = msg.ReadBoolean();
                    break;
                case EventType.UpdateSkills:
                    Identifier skillIdentifier = msg.ReadIdentifier();
                    if (!skillIdentifier.IsEmpty)
                    {
                        bool forceNotification = msg.ReadBoolean();
                        float skillLevel = msg.ReadSingle();
                        info?.SetSkillLevel(skillIdentifier, skillLevel, forceNotification: forceNotification);
                    }                  
                    break;
                case EventType.SetAttackTarget:
                case EventType.ExecuteAttack:
                    int attackLimbIndex = msg.ReadByte();
                    UInt16 targetEntityID = msg.ReadUInt16();
                    int targetLimbIndex = msg.ReadByte();
                    float targetX = msg.ReadSingle();
                    float targetY = msg.ReadSingle();
                    Vector2 targetSimPos = new Vector2(targetX, targetY);
                    //255 = entity already removed, no need to do anything
                    if (attackLimbIndex == 255 || targetEntityID == NullEntityID || Removed) { break; }
                    if (attackLimbIndex >= AnimController.Limbs.Length)
                    {
                        //it's possible to get these errors when mid-round syncing, as the client may not
                        //yet know about afflictions that have given the character extra limbs (e.g. spineling genes)
                        //ignoring the error should be safe though, not executing the attack should not cause any further issues
                        if (!GameMain.Client.MidRoundSyncing)
                        {
                            string errorMsg = $"Received invalid {(eventType == EventType.SetAttackTarget ? "SetAttackTarget" : "ExecuteAttack")} message. Limb index out of bounds (character: {Name}, limb index: {attackLimbIndex}, limb count: {AnimController.Limbs.Length})";
                            DebugConsole.ThrowError(errorMsg);
                            GameAnalyticsManager.AddErrorEventOnce("Character.ClientEventRead:AttackLimbOutOfBounds", GameAnalyticsManager.ErrorSeverity.Error, errorMsg);
                        }
                        break;
                    }
                    Limb attackLimb = AnimController.Limbs[attackLimbIndex];
                    Limb targetLimb = null;
                    IDamageable targetEntity = FindEntityByID(targetEntityID) as IDamageable;
                    if (targetEntity == null && eventType == EventType.SetAttackTarget)
                    {
                        DebugConsole.ThrowError($"Received invalid SetAttackTarget message. Target entity not found (ID {targetEntityID})");
                        GameAnalyticsManager.AddErrorEventOnce("Character.ClientEventRead:TargetNotFound", GameAnalyticsManager.ErrorSeverity.Error, "Received invalid SetAttackTarget message. Target entity not found.");
                        break;
                    }
                    if (targetEntity is Character targetCharacter && targetLimbIndex != 255)
                    {
                        if (targetLimbIndex >= targetCharacter.AnimController.Limbs.Length)
                        {
                            DebugConsole.ThrowError($"Received invalid {(eventType == EventType.SetAttackTarget ? "SetAttackTarget" : "ExecuteAttack")} message. Target limb index out of bounds (target character: {targetCharacter.Name}, limb index: {targetLimbIndex}, limb count: {targetCharacter.AnimController.Limbs.Length})");
                            string errorMsgWithoutName = $"Received invalid {(eventType == EventType.SetAttackTarget ? "SetAttackTarget" : "ExecuteAttack")} message. Target limb index out of bounds (target character: {targetCharacter.SpeciesName}, limb index: {targetLimbIndex}, limb count: {targetCharacter.AnimController.Limbs.Length})";
                            GameAnalyticsManager.AddErrorEventOnce("Character.ClientEventRead:TargetLimbOutOfBounds", GameAnalyticsManager.ErrorSeverity.Error, errorMsgWithoutName);                            
                            break;
                        }
                        targetLimb = targetCharacter.AnimController.Limbs[targetLimbIndex];
                    }
                    if (attackLimb?.attack != null && Controlled != this)
                    {
                        if (eventType == EventType.SetAttackTarget)
                        {
                            SetAttackTarget(attackLimb, targetEntity, targetSimPos);
                            PlaySound(CharacterSound.SoundType.Attack, maxInterval: 3);
                        }
                        else
                        {
                            attackLimb.ExecuteAttack(targetEntity, targetLimb, out _);
                        }
                    }
                    break;
                case EventType.AssignCampaignInteraction:
                    byte campaignInteractionType = msg.ReadByte();
                    bool requireConsciousness = msg.ReadBoolean();
                    (GameMain.GameSession?.GameMode as CampaignMode)?.AssignNPCMenuInteraction(this, (CampaignMode.InteractionType)campaignInteractionType);
                    RequireConsciousnessForCustomInteract = requireConsciousness;
                    break;
                case EventType.ObjectiveManagerState:
                    // 1 = order, 2 = objective
                    AIObjectiveManager.ObjectiveType msgType
                        = (AIObjectiveManager.ObjectiveType)msg.ReadRangedInteger(
                            (int)AIObjectiveManager.ObjectiveType.MinValue,
                            (int)AIObjectiveManager.ObjectiveType.MaxValue);
                    if (msgType == 0) { break; }
                    bool validData = msg.ReadBoolean();
                    if (!validData) { break; }
                    if (msgType == AIObjectiveManager.ObjectiveType.Order)
                    {
                        UInt32 orderPrefabUintIdentifier = msg.ReadUInt32();
                        var orderPrefab = OrderPrefab.Prefabs.Find(p => p.UintIdentifier == orderPrefabUintIdentifier);
                        Identifier option = Identifier.Empty;
                        if (orderPrefab.HasOptions)
                        {
                            int optionIndex = msg.ReadRangedInteger(-1, orderPrefab.AllOptions.Length);
                            if (optionIndex > -1)
                            {
                                option = orderPrefab.AllOptions[optionIndex];
                            }
                        }
                        GameMain.GameSession?.CrewManager?.SetOrderHighlight(this, orderPrefab.Identifier, option);
                    }
                    else if (msgType == AIObjectiveManager.ObjectiveType.Objective)
                    {
                        Identifier identifier = msg.ReadIdentifier();
                        Identifier option = msg.ReadIdentifier();
                        ushort objectiveTargetEntityId = msg.ReadUInt16();
                        var objectiveTargetEntity = FindEntityByID(objectiveTargetEntityId);
                        GameMain.GameSession?.CrewManager?.CreateObjectiveIcon(this, identifier, option, objectiveTargetEntity);
                    }
                    break;
                case EventType.TeamChange:
                    byte newTeamId = msg.ReadByte();
                    ChangeTeam((CharacterTeamType)newTeamId);
                    break;
                case EventType.AddToCrew:
                    GameMain.GameSession.CrewManager.AddCharacter(this);
                    ReadItemTeamChange(msg, true);
                    break;
                case EventType.RemoveFromCrew:
                    GameMain.GameSession.CrewManager.RemoveCharacter(this, removeInfo: true);
                    ReadItemTeamChange(msg, false);
                    break;
                case EventType.UpdateExperience:
                    int experienceAmount = msg.ReadInt32();
                    int additionalTalentPoints = msg.ReadInt32();
                    if (info != null)
                    {
                        info.SetExperience(experienceAmount);
                        info.AdditionalTalentPoints = additionalTalentPoints;
                    }
                    break;
                case EventType.UpdateTalents:
                    ushort talentCount = msg.ReadUInt16();
                    for (int i = 0; i < talentCount; i++)
                    {
                        bool addedThisRound = msg.ReadBoolean();
                        UInt32 talentIdentifier = msg.ReadUInt32();
                        GiveTalent(talentIdentifier, addedThisRound);
                    }
                    break;
                case EventType.UpdateMoney:
                    int moneyAmount = msg.ReadInt32();
                    SetMoney(moneyAmount);
                    break;
                case EventType.UpdateTalentRefundPoints:
                    int refundPoints = msg.ReadInt32();
                    if (info != null)
                    {
                        if (refundPoints > info.TalentRefundPoints)
                        {
                            info.ShowTalentResetPopupOnOpen = true;
                        }
                        info.TalentRefundPoints = refundPoints;
                    }
                    break;
                case EventType.ConfirmTalentRefund:
                    Info?.RefundTalents();
                    break;
                case EventType.UpdatePermanentStats:
                    byte savedStatValueCount = msg.ReadByte();
                    StatTypes statType = (StatTypes)msg.ReadByte();                       
                    info?.ClearSavedStatValues(statType);                        
                    for (int i = 0; i < savedStatValueCount; i++)
                    {
                        Identifier statIdentifier = msg.ReadIdentifier();
                        float statValue = msg.ReadSingle();
                        bool removeOnDeath = msg.ReadBoolean();
                        info?.ChangeSavedStatValue(statType, statValue, statIdentifier, removeOnDeath, setValue: true);
                    }
                    break;
                case EventType.LatchOntoTarget:
                    bool attached = msg.ReadBoolean();
                    if (attached)
                    {
                        Vector2 characterSimPos = new Vector2(msg.ReadSingle(), msg.ReadSingle());
                        Vector2 attachSurfaceNormal = new Vector2(msg.ReadSingle(), msg.ReadSingle());
                        Vector2 attachPos = new Vector2(msg.ReadSingle(), msg.ReadSingle());
                        int attachWallIndex = msg.ReadInt32();
                        UInt16 attachTargetId = msg.ReadUInt16();

                        if (AIController is EnemyAIController { LatchOntoAI: { } latchOntoAi })
                        {
                            var attachTargetEntity = FindEntityByID(attachTargetId);
                            switch (attachTargetEntity)
                            {
                                case Character attachTargetCharacter:
                                    latchOntoAi.SetAttachTarget(attachTargetCharacter);
                                    break;
                                case Structure attachTargetStructure:
                                    latchOntoAi.SetAttachTarget(attachTargetStructure, attachPos, attachSurfaceNormal);
                                    break;
                                default:                                    
                                    var allLevelWalls = Level.Loaded.GetAllCells();
                                    if (attachWallIndex >= 0 && attachWallIndex <= allLevelWalls.Count)
                                    {
                                        latchOntoAi.SetAttachTarget(allLevelWalls[attachWallIndex]);
                                    }
                                    break;                                    
                            }
                            latchOntoAi.AttachToBody(attachPos, attachSurfaceNormal, characterSimPos);
                        }
                    }
                    else
                    {
                        if (AIController is EnemyAIController { LatchOntoAI: { } latchOntoAi })
                        {
                            latchOntoAi.DeattachFromBody(reset: false);
                        }
                    }

                    break;
            }
            msg.ReadPadBits();

            static void ReadItemTeamChange(IReadMessage msg, bool allowStealing)
            {
                var itemTeamChange = INetSerializableStruct.Read<ItemTeamChange>(msg);
                foreach (var itemID in itemTeamChange.ItemIds)
                {
                    if (FindEntityByID(itemID) is not Item item) { continue; }
                    item.AllowStealing = allowStealing;
                    if (item.GetComponent<WifiComponent>() is { } wifiComponent)
                    {
                        wifiComponent.TeamID = itemTeamChange.TeamId;
                    }
                    if (item.GetComponent<IdCard>() is { } idCard)
                    {
                        idCard.TeamID = itemTeamChange.TeamId;
                        idCard.SubmarineSpecificID = 0;
                    }
                }
            }
        }

        public static Character ReadSpawnData(IReadMessage inc)
        {
            DebugConsole.Log("Reading character spawn data");

            if (GameMain.Client == null) { return null; }

            bool noInfo = inc.ReadBoolean();
            ushort id = inc.ReadUInt16();
            string speciesName = inc.ReadString();
            string seed = inc.ReadString();

            Vector2 position = new Vector2(inc.ReadSingle(), inc.ReadSingle());

            bool enabled = inc.ReadBoolean();
            bool disabledByEvent = inc.ReadBoolean();

            DebugConsole.Log("Received spawn data for " + speciesName);

            Character character = null;
            if (noInfo)
            {
                try
                {
                    character = Create(speciesName, position, seed, characterInfo: null, id: id, isRemotePlayer: false);
                }
                catch (Exception e)
                {
                    DebugConsole.ThrowError($"Failed to spawn character {speciesName}", e);
                    throw;
                }
                bool containsStatusData = inc.ReadBoolean();
                if (containsStatusData)
                {
                    character.ReadStatus(inc);
                }
            }
            else
            {
                bool hasOwner = inc.ReadBoolean();
                int ownerId = hasOwner ? inc.ReadByte() : -1;
                float humanPrefabHealthMultiplier = inc.ReadSingle();
                int balance = inc.ReadInt32();
                int rewardDistribution = inc.ReadRangedInteger(0, 100);
                byte teamID = inc.ReadByte();
                bool hasAi = inc.ReadBoolean();
                Identifier infoSpeciesName = inc.ReadIdentifier();

                CharacterInfo info = CharacterInfo.ClientRead(infoSpeciesName, inc);
                try
                {
                    character = Create(speciesName, position, seed, characterInfo: info, id: id, isRemotePlayer: ownerId > 0 && GameMain.Client.SessionId != ownerId, hasAi: hasAi);
                }
                catch (Exception e)
                {
                    DebugConsole.ThrowError($"Failed to spawn character {speciesName}", e);
                    throw;
                }
                character.TeamID = (CharacterTeamType)teamID;
                character.CampaignInteractionType = (CampaignMode.InteractionType)inc.ReadByte();
                if (character.CampaignInteractionType == CampaignMode.InteractionType.Store)
                {
                    character.MerchantIdentifier = inc.ReadIdentifier();
                }
                character.Faction = inc.ReadIdentifier();
                character.HumanPrefabHealthMultiplier = humanPrefabHealthMultiplier;
                character.Wallet.Balance = balance;
                character.Wallet.RewardDistribution = rewardDistribution;
                if (character.CampaignInteractionType != CampaignMode.InteractionType.None)
                {
                    (GameMain.GameSession.GameMode as CampaignMode)?.AssignNPCMenuInteraction(character, character.CampaignInteractionType);
                }

                // Check if the character has current orders
                int orderCount = inc.ReadByte();
                for (int i = 0; i < orderCount; i++)
                {
                    UInt32 orderPrefabUintIdentifier = inc.ReadUInt32();
                    Entity targetEntity = FindEntityByID(inc.ReadUInt16());
                    Character orderGiver = inc.ReadBoolean() ? FindEntityByID(inc.ReadUInt16()) as Character : null;
                    int orderOptionIndex = inc.ReadByte();
                    int orderPriority = inc.ReadByte();
                    OrderTarget targetPosition = null;
                    if (inc.ReadBoolean())
                    {
                        var x = inc.ReadSingle();
                        var y = inc.ReadSingle();
                        var hull = FindEntityByID(inc.ReadUInt16()) as Hull;
                        targetPosition = new OrderTarget(new Vector2(x, y), hull, creatingFromExistingData: true);
                    }

                    OrderPrefab orderPrefab =
                        OrderPrefab.Prefabs.Find(p => p.UintIdentifier == orderPrefabUintIdentifier);
                    if (orderPrefab != null)
                    {
                        var component = orderPrefab.GetTargetItemComponent(targetEntity as Item);
                        if (!orderPrefab.MustSetTarget || (targetEntity != null && component != null) || targetPosition != null)
                        {
                            var order = targetPosition == null ?
                                new Order(orderPrefab, targetEntity, component, orderGiver: orderGiver) :
                                new Order(orderPrefab, targetPosition, orderGiver: orderGiver);
                            order = order.WithOption(
                                orderOptionIndex >= 0 && orderOptionIndex < orderPrefab.Options.Length
                                    ? orderPrefab.Options[orderOptionIndex]
                                    : Identifier.Empty)
                                .WithManualPriority(orderPriority)
                                .WithOrderGiver(orderGiver);
                            character.SetOrder(order, isNewOrder: true, speak: false, force: true);
                        }
                        else
                        {
                            DebugConsole.AddSafeError("Could not set order \"" + orderPrefab.Identifier + "\" for character \"" + character.Name + "\" because required target entity was not found.");
                        }
                    }
                    else
                    {
                        DebugConsole.ThrowError("Invalid order prefab index - index (" + orderPrefabUintIdentifier + ") out of bounds.");
                    }
                }

                bool containsStatusData = inc.ReadBoolean();
                if (containsStatusData)
                {
                    character.ReadStatus(inc);
                }

                if (character.IsHuman && character.TeamID != CharacterTeamType.FriendlyNPC && character.TeamID != CharacterTeamType.None)
                {
                    CharacterInfo duplicateCharacterInfo = GameMain.GameSession.CrewManager.GetCharacterInfos(includeReserveBench: true).FirstOrDefault(c => c.ID == info.ID);
                    GameMain.GameSession.CrewManager.RemoveCharacterInfo(duplicateCharacterInfo);
                    if (character.isDead)
                    {
                        //just add the info if dead (displayed in the round summary, and crew list if the character is revived)
                        GameMain.GameSession.CrewManager.AddCharacterInfo(character.info);
                    }
                    else
                    {
                        GameMain.GameSession.CrewManager.AddCharacter(character);
                    }
                }

                if (GameMain.Client.SessionId == ownerId)
                {
                    GameMain.Client.HasSpawned = true;
                    GameMain.Client.Character = character;
                    if (!character.IsDead) { Controlled = character; }

                    GameMain.LightManager.LosEnabled = true;
#if DEBUG
                    GameMain.LightManager.LosEnabled = !GameMain.DevMode;
#endif
                    GameMain.LightManager.LosAlpha = 1f;

                    GameMain.NetLobbyScreen.CampaignCharacterDiscarded = false;

                    character.memInput.Clear();
                    character.memState.Clear();
                    character.memLocalState.Clear();
                }
            }

            if (disabledByEvent)
            {
                character.DisabledByEvent = true;
            }
            else
            {
                character.Enabled = Controlled == character || enabled;
            }

            return character;
        }

        private void ReadStatus(IReadMessage msg)
        {
            bool isDead = msg.ReadBoolean();
            if (isDead)
            {
                CauseOfDeathType causeOfDeathType = (CauseOfDeathType)msg.ReadRangedInteger(0, Enum.GetValues(typeof(CauseOfDeathType)).Length - 1);
                AfflictionPrefab causeOfDeathAffliction = null;
                if (causeOfDeathType == CauseOfDeathType.Affliction)
                {
                    uint afflictionId = msg.ReadUInt32();
                    AfflictionPrefab afflictionPrefab = AfflictionPrefab.Prefabs.Find(p => p.UintIdentifier == afflictionId);
                    if (afflictionPrefab == null)
                    {
                        string errorMsg = $"Error in CharacterNetworking.ReadStatus: affliction not found (id {afflictionId})";
                        causeOfDeathType = CauseOfDeathType.Unknown;
                        GameAnalyticsManager.AddErrorEventOnce("CharacterNetworking.ReadStatus:AfflictionNotFound", GameAnalyticsManager.ErrorSeverity.Error, errorMsg);
                    }
                    else
                    {
                        causeOfDeathAffliction = afflictionPrefab;
                    }
                }
                bool containsAfflictionData = msg.ReadBoolean();
                if (!IsDead)
                {
                    if (causeOfDeathType == CauseOfDeathType.Pressure || causeOfDeathAffliction == AfflictionPrefab.Pressure)
                    {
                        Implode(true);
                    }
                    else
                    {
                        Kill(causeOfDeathType, causeOfDeathAffliction?.Instantiate(1.0f), true);
                    }
                }                
                if (containsAfflictionData)
                {
                    CharacterHealth.ClientRead(msg);
                    CharacterHealth.ForceUpdateVisuals();
                }
            }
            else
            {
                if (IsDead) { Revive(); }
                CharacterHealth.ClientRead(msg);
            }

            byte severedLimbCount = msg.ReadByte();
            for (int i = 0; i < severedLimbCount; i++)
            {
                int severedJointIndex = msg.ReadByte();
                if (severedJointIndex < 0 || severedJointIndex >= AnimController.LimbJoints.Length)
                {
                    string errorMsg = $"Error in CharacterNetworking.ReadStatus: severed joint index out of bounds (index: {severedJointIndex}, joint count: {AnimController.LimbJoints.Length})";
                    GameAnalyticsManager.AddErrorEventOnce("CharacterNetworking.ReadStatus:JointIndexOutOfBounts", GameAnalyticsManager.ErrorSeverity.Error, errorMsg);
                }
                else
                {
                    AnimController.SeverLimbJoint(AnimController.LimbJoints[severedJointIndex]);
                }
            }
        }
    }
}