CanTransfer()

static bool CanTransfer ( ItemBase source_ent, ItemBase target_ent )

static

См. определение в файле Liquid.c строка 121

    {
        if (!source_ent || !target_ent)
            return false;
        
        Barrel_ColorBase barrelTarget = Barrel_ColorBase.Cast(target_ent);
        Barrel_ColorBase barrelSource = Barrel_ColorBase.Cast(source_ent);
        if ((barrelTarget && !barrelTarget.IsOpen()) || (barrelSource && !barrelSource.IsOpen()))
        {
            return false;
        }
        
        if (source_ent.GetIsFrozen())
        {
            return false;
        }
        
        float source_quantity = source_ent.GetQuantity();
        if (source_quantity <= 0)
        {
            //Debug.Log("source has no quantity", "LiquidTransfer");
            return false;//if there is nothing to transfer
        }
        
        int source_liquid_type  = source_ent.GetLiquidType();   
        if (source_liquid_type < 1) 
        {
            //Debug.Log("source has some quantity, but does not have a valid liquidType set, liquidType = "+ToString(source_liquid_type), "LiquidTransfer");
            return false;//if source is not a container
        }
        
        if (!CanFillContainer(target_ent,source_liquid_type))
        {
            return false;
        }
        
        return true;
    }

Перекрестные ссылки CanFillContainer() и Barrel_ColorBase::IsOpen().