replaceitemwithnewlambdabase.c

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class ReplaceItemWithNewLambdaBase
{
    EntityAI m_OldItem;
    string m_NewItemType;
    protected ref InventoryLocation m_OldLocation;
    protected ref InventoryLocation m_NewLocation;
    protected bool m_RemoveFromLocationPassed = false;
    private bool m_RemoveNetworkObjectInfoPassed = false;
 
    void ReplaceItemWithNewLambdaBase(EntityAI old_item, string new_item_type)
    {
        m_OldItem = old_item;
        m_NewItemType = new_item_type;
    }
 
    void OverrideNewLocation(InventoryLocation newLocation)
    {
        m_NewLocation = newLocation;
    }
    
    void VerifyItemTypeBySlotType() {}
 
    protected bool WantCreateNewEntity()
    {
        return m_NewLocation && m_NewItemType != string.Empty;
    }
 
    protected bool CanExecuteLambda()
    {
        if (m_OldItem)
            if (GameInventory.LocationCanRemoveEntity(m_OldLocation))
                //if (WantCreateNewEntity() GameInventory.LocationTestAddEntityType(m_NewItemType, true, true, false, true))
                    return true;
        return false;
    }
 
    protected bool PrepareLocations()
    {
        if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[inv] ReplaceItemWithNewLambdaBase Step A) Prepare inventory locations, old_item=" + m_OldItem);
        m_OldLocation = new InventoryLocation;
        if (m_OldItem.GetInventory().GetCurrentInventoryLocation(m_OldLocation)) // A.1) store old location
        {
            if (m_NewLocation == null)
            {
                m_NewLocation = new InventoryLocation;
                m_NewLocation.CopyLocationFrom(m_OldLocation, true);    // A.2) prepare new location from old
                
                //setting proper location type for ground pos
                if (!m_NewLocation.GetParent())
                {
                    vector m4[4];
                    Math3D.MatrixIdentity4(m4);
                    m4[3] = m_NewLocation.GetPos();
                    string path = "" + CFG_VEHICLESPATH + " " + m_NewItemType + " inherit_rotation";
                    bool keep_rotation = GetGame().ConfigIsExisting(path) && GetGame().ConfigGetInt(path) > 0;
                    
                    if (m_OldLocation.GetType() == InventoryLocationType.GROUND && keep_rotation)
                    {
                        float dir[4];
                        m_OldLocation.GetDir(dir);
                        m_NewLocation.SetGroundEx(null,m_NewLocation.GetPos(),dir);
                    }
                    else
                    {
                        m_NewLocation.SetGround(null,m4);
                    }
                }
            }
            return true;
        }
        else
            Error("[inv] ReplaceItemWithNewLambdaBase Step A.1) failed to get old_item inventory location");
        return false;
    }
 
    protected void RemoveOldItemFromLocation()
    {
        if (!GameInventory.LocationRemoveEntity(m_OldLocation)) // B) remove entity from old inventory location (making it free for new item)
        {
            Error("[inv] ReplaceItemWithNewLambdaBase Step B) failed to remove old_item rom current inventory location");
            m_RemoveFromLocationPassed = false;
        }
        Print("[inv] ReplaceItemWithNewLambdaBase Step B) remove OK, loc=" + InventoryLocation.DumpToStringNullSafe(m_OldLocation));
        m_RemoveFromLocationPassed = true;
    }
    protected void UndoRemoveOldItemFromLocation()
    {
        if (!GameInventory.LocationAddEntity(m_OldLocation)) // B) undo
            Error("[inv] ReplaceItemWithNewLambdaBase Step B) failed to undo remove");
        Print("[inv] ReplaceItemWithNewLambdaBase Step B) undo remove OK, loc=" + InventoryLocation.DumpToStringNullSafe(m_OldLocation));
    }
 
    protected void RemoveNetworkObjectInfo()
    {
        GetGame().RemoteObjectTreeDelete(m_OldItem); // C) this forces server to send DeleteObject Message to client. This is needed for preserving the appearance of network operations on client (so that DeleteObject(old) arrives before CreateVehicle(new)). @NOTE: this does not delete the object on server, only it's network representation.
        // @NOTE: the item is not deleted right now on server, but rather after copying the properties in Step E)
        m_RemoveNetworkObjectInfoPassed = true;
    }
    protected void UndoRemoveNetworkObjectInfo()
    {
        GetGame().RemoteObjectTreeCreate(m_OldItem);
    }
 
    protected EntityAI CreateNewEntity()
    {
        if (WantCreateNewEntity())
        {
            VerifyItemTypeBySlotType();
            EntityAI new_item;
            
            switch (m_NewLocation.GetType())
            {
                case InventoryLocationType.GROUND:
                    new_item = EntityAI.Cast(GetGame().CreateObjectEx(m_NewItemType,m_NewLocation.GetPos(),ECE_PLACE_ON_SURFACE|ECE_LOCAL));
                    string path = "" + CFG_VEHICLESPATH + " " + m_NewItemType + " inherit_rotation";
                    bool keep_rotation = GetGame().ConfigIsExisting(path) && GetGame().ConfigGetInt(path) > 0;
                    if (keep_rotation)
                    {
                        new_item.SetOrientation(m_OldItem.GetOrientation()); //this one actually works...debug InventoryLocation
                    }
                break;
                case InventoryLocationType.ATTACHMENT:
                    // forces rawlocation in C++ to make location Valid
                    m_NewLocation.SetAttachment(m_NewLocation.GetParent(), null, m_NewLocation.GetSlot());
                    new_item = GameInventory.LocationCreateEntity(m_NewLocation, m_NewItemType, ECE_OBJECT_SWAP, RF_NONE);
                break;
                default:
                    new_item = GameInventory.LocationCreateLocalEntity(m_NewLocation, m_NewItemType, ECE_OBJECT_SWAP, RF_NONE);
                break;
            }
            
            if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[inv] ReplaceItemWithNewLambdaBase Step D) Created new new_item=" + new_item);
            if (new_item)
            {
                return new_item;
            }
            else
            {                           
                return null;
 
                /*InventoryLocation backupLocation = new InventoryLocation;
                vector mtx[4];
                Math3D.MatrixIdentity4(mtx);
                mtx[3] = m_OldItem.GetPosition();
                backupLocation.SetGround(null, mtx);
                if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[inv] ReplaceItemWithNewLambdaBase Step D) plan B - creating=" + m_NewItemType + " at bkp loc=" + backupLocation.DumpToString() + ", but failed");
                new_item = GameInventory.LocationCreateLocalEntity(backupLocation, m_NewItemType,ECE_OBJECT_SWAP,RF_NONE); // create LOCAL new one on ground
                if (!new_item)
                {
                    Error("[inv] ReplaceItemWithNewLambdaBase Step D) plan B - wanted to create=" + m_NewItemType + " at bkp loc=" + backupLocation.DumpToString() + ", but failed");
                    return null;
                }
                return new_item;*/
            }
        }
 
        // user did not asked for new entity
        return null;
    }
 
    void CopyOldPropertiesToNew(notnull EntityAI old_item, EntityAI new_item)
    {
        if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[inv] ReplaceItemWithNewLambdaBase Step E) Copying props " + old_item + " --> " + new_item);
    }
 
    protected void DeleteOldEntity()
    {
        if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[inv] ReplaceItemWithNewLambdaBase Step F) delete old item=" + m_OldItem);
        m_OldItem.DeleteSafe();
    }
    
    protected void CreateNetworkObjectInfo(EntityAI new_item)
    {
        if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[inv] ReplaceItemWithNewLambdaBase Step G) CreateNetworkObjectInfo =" + new_item);
        if (new_item)
            GetGame().RemoteObjectTreeCreate(new_item); // G) this forces server to send CreateVehicle Message to client. This is needed for preserving the appearance of network operations on client (so that DeleteObject(old) arrives before CreateVehicle(new)). @NOTE: this does not delete the object on server, only it's network representation.
    }
 
    protected void OnSuccess(EntityAI new_item)
    {
        if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[inv] ReplaceItemWithNewLambdaBase Step H) OnSuccess=" + new_item);
    }
 
    protected void OnAbort()
    {
        Print("Error [inv] ReplaceItemWithNewLambdaBase OnAbort");
    }
 
    void Execute(HumanInventoryWithFSM fsm_to_notify = null)
    {
        int t = GetGame().GetTime();
        if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[syncinv] t=" + t + " lambda.Execute start ");
 
        // A) init
        bool prepared = PrepareLocations();
 
        if (prepared && CanExecuteLambda())
        {
            // B) rm old (and delete on client)
            RemoveOldItemFromLocation();
            if (!m_RemoveFromLocationPassed)
            {
                Error("[inv] ReplaceItemWithNewLambdaBase Step B) ABORT - failed while rm old item from loc=" + InventoryLocation.DumpToStringNullSafe(m_OldLocation));
 
                if (fsm_to_notify)
                    fsm_to_notify.ProcessHandAbortEvent(new HandEventHumanCommandActionAborted(fsm_to_notify.GetManOwner()));
                OnAbort();
                return;
            }
 
            // C) rm NetworkObjectInfo from old item (+ send delete object tree to clients)
            RemoveNetworkObjectInfo();
 
            // D) mk new in place of old
            EntityAI new_item = CreateNewEntity();
            if (WantCreateNewEntity() && new_item == null)
            {
                //Error("[inv] ReplaceItemWithNewLambdaBase Step D) ABORT - wanted to create=" + m_NewItemType + " at loc=" + m_NewLocation.DumpToString() + ", but failed");
                Print("Error [inv] ReplaceItemWithNewLambdaBase Step D) ABORT - wanted to create=" + m_NewItemType + " at loc=" + InventoryLocation.DumpToStringNullSafe(m_NewLocation) + ", but failed");
                if (m_RemoveFromLocationPassed)
                    UndoRemoveOldItemFromLocation();
                if (m_RemoveNetworkObjectInfoPassed)
                    UndoRemoveNetworkObjectInfo();
 
                OnAbort();
                if (fsm_to_notify)
                    fsm_to_notify.ProcessHandAbortEvent(new HandEventHumanCommandActionAborted(fsm_to_notify.GetManOwner()));
                return;
            }
 
            // E) cpy props
            CopyOldPropertiesToNew(m_OldItem, new_item);
 
            // F) del old
            DeleteOldEntity();
 
            // G) mk new NetworkObjectInfo
            CreateNetworkObjectInfo(new_item);
 
            // H) notification
            OnSuccess(new_item);
        }
        else
        {
            Print("[syncinv] warning, lambda cannot be executed, skipping!");
            if (fsm_to_notify)
                fsm_to_notify.ProcessHandAbortEvent(new HandEventHumanCommandActionAborted(fsm_to_notify.GetManOwner()));
            OnAbort();
            return;
        }
        int te = GetGame().GetTime();
        int dt = te - t;
        if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[syncinv] te=" + te + " lambda.Execute end, exec time=" + dt);
    }
 
    string DumpToString()
    {
        string s = "{ old=" + m_OldItem + " newType=" + m_NewItemType + "}";
        return s;
    }
};
 
 
class ItemInventory : GameInventory
{
};