polymorphism

ProjectCruiser/AbstractCompany.cs

@@ -0,0 +1,70 @@
+using ProjectCruiser.DrawningSamples;
+namespace ProjectCruiser;
+
+/// Абстракция компании, хранящий коллекцию автомобилей
+/// </summary>
+public abstract class AbstractCompany
+{
+    // Размеры места
+    protected readonly int _placeSizeWidth = 312; // ширина
+
+    protected readonly int _placeSizeHeight = 56; // высота
+
+    // Ширина окна
+    protected readonly int _pictureWidth;
+    // Высота окна
+    protected readonly int _pictureHeight;
+
+    // Коллекция автомобилей
+    protected ICollectionGenObj<DrawningBase>? _collection = null;
+    private int GetMaxCount => _pictureWidth * _pictureHeight /
+    (_placeSizeWidth * _placeSizeHeight);
+
+    public AbstractCompany(int picWidth, int picHeight,
+        ICollectionGenObj<DrawningBase>? collection)
+    {
+        _pictureWidth = picWidth;
+        _pictureHeight = picHeight;
+        _collection = collection;
+        _collection.SetMaxCount = GetMaxCount;
+    }
+
+    // Перегрузка оператора сложения для класса
+    // [ ! ] insted of bool:
+    public static int operator +(AbstractCompany cmp,
+        DrawningBase trasport) => (cmp._collection.Insert(trasport));
+
+    // Перегрузка оператора удаления для класса
+    public static DrawningBase operator -(AbstractCompany cmp,
+            int pos) => (cmp._collection.Remove(pos));
+
+    // Получение случайного объекта из коллекции
+    public DrawningBase? GetRandomObject()
+    {
+        Random rnd = new();
+        return _collection?.GetItem(rnd.Next(GetMaxCount));
+    }
+
+    // Вывод всей коллекции
+    public Bitmap? Show()
+    {
+        Bitmap bitmap = new(_pictureWidth, _pictureHeight);
+        Graphics graphics = Graphics.FromImage(bitmap);
+        DrawBackground(graphics);
+        SetObjectsPosition();
+        for (int i = 0; i < (_collection?.Count ?? 0); ++i)
+        {
+            DrawningBase? obj = _collection?.GetItem(i);
+            obj?.DrawTransport(graphics);
+        }
+        return bitmap;
+    }
+
+
+    // Вывод заднего фона
+    protected abstract void DrawBackground(Graphics g);
+
+    // Расстановка объектов
+    protected abstract void SetObjectsPosition();
+}
+

ProjectCruiser/ArrayGenObj.cs

@@ -0,0 +1,94 @@
+namespace ProjectCruiser;
+
+public class ArrayGenObj<T> : ICollectionGenObj<T>
+    where T : class
+{
+    // Массив объектов, которые храним
+    private T?[] _collection;
+    public int Count => _collection.Length;
+    public int SetMaxCount
+    {
+        set 
+        {
+            if (value > 0)
+            {
+                if (_collection.Length > 0) Array.Resize(ref _collection, value);
+                else _collection = new T?[value];
+            }
+        }
+    }
+
+    // public int SetMaxCount { set { if (value > 0) { _collection = new T?[value]; } } }
+
+    public ArrayGenObj()
+    {
+        _collection = Array.Empty<T?>();
+    }
+
+    // methods :
+
+    public T? GetItem(int index)
+    {
+        if (index > Count || index < 0)
+        {
+            return null;
+        }
+        return _collection[index];
+    }
+
+    public int Insert(T? item)
+    {
+        // any empty place
+        for (int i = 0; i < Count; i++)
+        {
+            if (_collection[i] == null)
+            {
+                _collection[i] = item;
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    public int Insert(T? item, int index)
+    {
+        if (_collection[index] == null)
+        {
+            _collection[index] = item;
+            return index;
+        }
+
+        else
+        {
+            int min_diff = 100, min_index = 100;
+
+            for (int i = 0; i < Count; i++)
+            {
+                if (_collection[i] == null 
+                    && min_diff > Math.Abs(index - i))
+                {
+                    min_diff = Math.Abs(index - i);
+                    min_index = i;
+                }
+            }
+
+            _collection[min_index] = item;
+            return min_index;
+        }
+
+        return -1;
+    }
+
+    public T? Remove(int index)
+    {
+        T? item;
+        if (index < Count && index >= 0)
+        {
+            item = _collection[index];
+            _collection[index] = null;
+            return item;
+        }
+        return null;
+    }
+}
+

ProjectCruiser/DrawningSamples/DrawningCruiser.cs

@@ -6,11 +6,11 @@ public class DrawningCruiser : DrawningBase
 {
     // Инициализация свойств (все параметры класса (сущности))
     public DrawningCruiser(int speed, double weight, Color bodyColor,
-        Color additionalColor, bool pads, bool hangar) : base(302, 42)
+        Color additionalColor, bool hangars) : base(302, 42)
     // all additional featchures 'inside' object, so size remains
     {
         EntityTransport = new EntityCruiser(speed, weight,
-            bodyColor, additionalColor, pads, hangar);
+            bodyColor, additionalColor, hangars);
     }
 
     public override void DrawTransport(Graphics g)
@@ -31,24 +31,16 @@ public class DrawningCruiser : DrawningBase
 
         base.DrawTransport(g);
 
-        // вертолетная площадка
+        // вертолетная площадка - default TRUE now
-        if (ship.HelicopterPads)
-        {
          g.DrawEllipse(pen, _startPosX.Value + 170, _startPosY.Value + 11, 20, 20);
          g.FillEllipse(PadBrush, _startPosX.Value + 170, _startPosY.Value + 11, 20, 20);
-        }
 
-        // ангар
+        // ангар(ы)
-        if (ship.Hangar)
+        if (ship.Hangars)
-        {
-            int n = EntityTransport.values[2];
-            if (n == 1) g.FillRectangle(additionalBrush, _startPosX.Value + 250, _startPosY.Value + 20, 14, 7);
-
-            else
         {
             g.FillRectangle(additionalBrush, _startPosX.Value + 80, _startPosY.Value + 10, 10, 20);
             g.FillRectangle(additionalBrush, _startPosX.Value + 70, _startPosY.Value + 12, 8, 12);
         }
-        }
+        else g.FillRectangle(additionalBrush, _startPosX.Value + 250, _startPosY.Value + 20, 14, 7);
     }
 }

ProjectCruiser/Entities/EntityCruiser.cs

@@ -6,14 +6,14 @@ public class EntityCruiser : EntityBase
 
     // признаки (наличия)
     public bool HelicopterPads { get; private set; } // вертолетная площадка
-    public bool Hangar { get; private set; } // ангар
+    public bool Hangars { get; private set; } // ангар
 
     public EntityCruiser(int speed, double weight, Color mainc,
-        Color additionalColor, bool pads, bool hangar)
+        Color additionalColor, bool hangars)
         : base(speed, weight, mainc)
     {
         AdditionalColor = additionalColor;
-        HelicopterPads = pads;
+        // HelicopterPads = pads; - default TRUE now for Advanced obj
-        Hangar = hangar;
+        Hangars = hangars;
     }
 }

ProjectCruiser/ICollectionGenObj.cs

@@ -0,0 +1,24 @@
+namespace ProjectCruiser;
+
+public interface ICollectionGenObj<T> where T : class
+{
+    // Кол-во объектов в коллекции
+    int Count { get; }
+
+    // Установка max кол-ва элементов
+    int SetMaxCount { set; }
+
+    /// Добавление объекта в коллекцию
+    /// <param name="obj">Добавляемый объект</param>
+    /// <returns>true - вставка прошла удачно, false - вставка не удалась</returns>
+    int Insert(T obj);
+    int Insert(T obj, int position);
+
+    /// Удаление объекта из коллекции с конкретной позиции
+    /// <param name="position">Позиция</param>
+    /// <returns>true - удаление прошло удачно, false - удаление не удалось</returns>
+    T? Remove(int position);
+
+    // Получение объекта по позиции
+    T? GetItem(int position);
+}

ProjectCruiser/OceanForm1.cs

@@ -11,6 +11,19 @@ namespace ProjectCruiser
         // Стратегия перемещения
         private AbstractStrategy? _strategy;
 
+        // Получение объекта
+        public DrawningBase SetShip
+        {
+            set
+            {
+                _drawningCruiser = value;
+                _drawningCruiser.SetPictureSize(pictureBoxCr.Width, pictureBoxCr.Height);
+                comboBoxStrategy.Enabled = true;
+                _strategy = null;
+                Draw();
+            }
+        }
+
         public OceanForm1()
         {
             InitializeComponent();
@@ -51,10 +64,11 @@ namespace ProjectCruiser
                     break;
 
                 case nameof(DrawningCruiser):
-                    _drawningCruiser = new DrawningCruiser(random.Next(100, 300), random.Next(1000, 3000),
+                    _drawningCruiser = new DrawningCruiser(
+                        random.Next(100, 300), random.Next(1000, 3000),
                         Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256)),
                         Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256)),
-                        Convert.ToBoolean(random.Next(0, 2)), Convert.ToBoolean(random.Next(0, 2)));
+                        Convert.ToBoolean(random.Next(0, 2)));
                     break;
 
                 default:

ProjectCruiser/Program.cs

@@ -11,7 +11,8 @@ namespace ProjectCruiser
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
             ApplicationConfiguration.Initialize();
-            Application.Run(new OceanForm1());
+            Application.Run(new ServiceForm2());
+            // -> OceanForm1() inside*
         }
     }
 }

ProjectCruiser/ServiceForm2.Designer.cs

@@ -0,0 +1,173 @@
+namespace ProjectCruiser
+{
+    partial class ServiceForm2
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            comboBoxArrList = new ComboBox();
+            btnAddBase = new Button();
+            groupBox = new GroupBox();
+            btnUpdate = new Button();
+            btnTest = new Button();
+            btnDelete = new Button();
+            maskedTextBoxPosition = new MaskedTextBox();
+            btnAddCruiser = new Button();
+            pictureBox = new PictureBox();
+            groupBox.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)pictureBox).BeginInit();
+            SuspendLayout();
+            // 
+            // comboBoxArrList
+            // 
+            comboBoxArrList.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+            comboBoxArrList.FormattingEnabled = true;
+            comboBoxArrList.Items.AddRange(new object[] { "Storage" });
+            comboBoxArrList.Location = new Point(17, 54);
+            comboBoxArrList.Name = "comboBoxArrList";
+            comboBoxArrList.Size = new Size(268, 40);
+            comboBoxArrList.TabIndex = 0;
+            comboBoxArrList.SelectedIndexChanged += SelectorCompany_SelectedIndexChanged;
+            // 
+            // btnAddBase
+            // 
+            btnAddBase.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+            btnAddBase.Location = new Point(17, 561);
+            btnAddBase.Name = "btnAddBase";
+            btnAddBase.Size = new Size(268, 46);
+            btnAddBase.TabIndex = 1;
+            btnAddBase.Text = "Add ship";
+            btnAddBase.UseVisualStyleBackColor = true;
+            btnAddBase.Click += btnAddBase_Click;
+            // 
+            // groupBox
+            // 
+            groupBox.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+            groupBox.Controls.Add(btnUpdate);
+            groupBox.Controls.Add(btnTest);
+            groupBox.Controls.Add(btnDelete);
+            groupBox.Controls.Add(maskedTextBoxPosition);
+            groupBox.Controls.Add(btnAddCruiser);
+            groupBox.Controls.Add(btnAddBase);
+            groupBox.Controls.Add(comboBoxArrList);
+            groupBox.Location = new Point(1437, 12);
+            groupBox.Name = "groupBox";
+            groupBox.Size = new Size(300, 938);
+            groupBox.TabIndex = 2;
+            groupBox.TabStop = false;
+            groupBox.Text = "Tool panel";
+            // 
+            // btnUpdate
+            // 
+            btnUpdate.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+            btnUpdate.Location = new Point(17, 865);
+            btnUpdate.Name = "btnUpdate";
+            btnUpdate.Size = new Size(268, 46);
+            btnUpdate.TabIndex = 6;
+            btnUpdate.Text = "Update";
+            btnUpdate.UseVisualStyleBackColor = true;
+            btnUpdate.Click += btnRefresh_Click;
+            // 
+            // btnTest
+            // 
+            btnTest.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+            btnTest.Location = new Point(17, 795);
+            btnTest.Name = "btnTest";
+            btnTest.Size = new Size(268, 64);
+            btnTest.TabIndex = 5;
+            btnTest.Text = "Choose for testing";
+            btnTest.UseVisualStyleBackColor = true;
+            btnTest.Click += btnChooseforTest_Click;
+            // 
+            // btnDelete
+            // 
+            btnDelete.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+            btnDelete.Location = new Point(17, 732);
+            btnDelete.Name = "btnDelete";
+            btnDelete.Size = new Size(268, 46);
+            btnDelete.TabIndex = 4;
+            btnDelete.Text = "Delete";
+            btnDelete.UseVisualStyleBackColor = true;
+            btnDelete.Click += btnRemoveCar_Click;
+            // 
+            // maskedTextBoxPosition
+            // 
+            maskedTextBoxPosition.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+            maskedTextBoxPosition.Location = new Point(17, 682);
+            maskedTextBoxPosition.Mask = "00";
+            maskedTextBoxPosition.Name = "maskedTextBoxPosition";
+            maskedTextBoxPosition.Size = new Size(268, 39);
+            maskedTextBoxPosition.TabIndex = 3;
+            maskedTextBoxPosition.ValidatingType = typeof(int);
+            // 
+            // btnAddCruiser
+            // 
+            btnAddCruiser.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+            btnAddCruiser.Location = new Point(17, 613);
+            btnAddCruiser.Name = "btnAddCruiser";
+            btnAddCruiser.Size = new Size(268, 46);
+            btnAddCruiser.TabIndex = 2;
+            btnAddCruiser.Text = "Add cruiser";
+            btnAddCruiser.UseVisualStyleBackColor = true;
+            btnAddCruiser.Click += btnAddAdvanced_Click;
+            // 
+            // pictureBox
+            // 
+            pictureBox.Dock = DockStyle.Left;
+            pictureBox.Location = new Point(0, 0);
+            pictureBox.Name = "pictureBox";
+            pictureBox.Size = new Size(1417, 959);
+            pictureBox.TabIndex = 3;
+            pictureBox.TabStop = false;
+            // 
+            // ServiceForm2
+            // 
+            AutoScaleDimensions = new SizeF(13F, 32F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(1749, 959);
+            Controls.Add(pictureBox);
+            Controls.Add(groupBox);
+            Name = "ServiceForm2";
+            Text = "ServiceForm2";
+            groupBox.ResumeLayout(false);
+            groupBox.PerformLayout();
+            ((System.ComponentModel.ISupportInitialize)pictureBox).EndInit();
+            ResumeLayout(false);
+        }
+
+        #endregion
+
+        private ComboBox comboBoxArrList;
+        private Button btnAddBase;
+        private GroupBox groupBox;
+        private Button btnAddCruiser;
+        private Button btnUpdate;
+        private Button btnTest;
+        private Button btnDelete;
+        private MaskedTextBox maskedTextBoxPosition;
+        private PictureBox pictureBox;
+    }
+}

ProjectCruiser/ServiceForm2.cs

@@ -0,0 +1,138 @@
+using System.Windows.Forms;
+using ProjectCruiser.DrawningSamples;
+namespace ProjectCruiser;
+
+public partial class ServiceForm2 : Form
+{
+    // Компания
+    private AbstractCompany? _company;
+    public ServiceForm2()
+    {
+        InitializeComponent();
+        _company = null;
+    }
+
+    // Выбор компании
+    private void SelectorCompany_SelectedIndexChanged(object sender, EventArgs e)
+    {
+        switch (comboBoxArrList.Text)
+        {
+            case "Storage":
+                _company = new ShipSharingService(pictureBox.Width, pictureBox.Height,
+                    new ArrayGenObj<DrawningBase>());
+                break;
+        }
+    }
+
+    // Color picker
+    private static Color pickColor(Random r)
+    {
+        Color cl = Color.FromArgb(r.Next(0, 256), r.Next(0, 256), r.Next(0, 256));
+        ColorDialog dialog = new();
+
+        if (dialog.ShowDialog() == DialogResult.OK)
+        { cl = dialog.Color; }
+
+        return cl;
+    }
+
+    // Добавление обычного корабля
+    private void btnAddBase_Click(object sender, EventArgs e) =>
+        CreateObject(nameof(DrawningBase));
+
+    // Добавление продвинутого
+    private void btnAddAdvanced_Click(object sender, EventArgs e) =>
+        CreateObject(nameof(DrawningCruiser));
+
+    // Создание объекта класса-перемещения
+    private void CreateObject(string type)
+    {
+        if (_company == null)
+        {
+            return;
+        }
+        Random random = new();
+        DrawningBase drawningCar;
+
+        switch (type)
+        {
+            case nameof(DrawningBase):
+                drawningCar = new DrawningBase(random.Next(100, 300),
+                random.Next(1000, 3000), pickColor(random));
+                break;
+
+            case nameof(DrawningCruiser):
+                // (TODO) вызов диалогового окна для выбора цвета >>>
+                drawningCar = new DrawningCruiser(random.Next(100, 300),
+                    random.Next(1000, 3000), pickColor(random), pickColor(random),
+                    Convert.ToBoolean(random.Next(0, 2)));
+                break;
+            default:
+                return;
+        }
+        if (_company + drawningCar != -1)
+        {
+            MessageBox.Show("> Object was added");
+            pictureBox.Image = _company.Show();
+        }
+        else
+        {
+            MessageBox.Show("[!] Failed to add object");
+        }
+    }
+
+    // Удаление объекта
+    private void btnRemoveCar_Click(object sender, EventArgs e)
+    {
+        if (string.IsNullOrEmpty(maskedTextBoxPosition.Text) 
+            || _company == null) return;
+
+        if (MessageBox.Show("[*] Remove object: Are you sure?", "Remove",
+        MessageBoxButtons.YesNo, MessageBoxIcon.Question) != DialogResult.Yes) return;
+        int pos = Convert.ToInt32(maskedTextBoxPosition.Text);
+
+        if (_company - Convert.ToInt32(maskedTextBoxPosition.Text) != null)
+        {
+            MessageBox.Show("> Object was removed");
+            pictureBox.Image = _company.Show();
+        }
+        else MessageBox.Show("[!] Failed to remove object");
+    }
+
+    // Передача объекта в другую форму
+    private void btnChooseforTest_Click(object sender, EventArgs e)
+    {
+        if (_company == null)
+        {
+            return;
+        }
+        DrawningBase? car = null;
+        int counter = 100;
+        while (car == null)
+        {
+            car = _company.GetRandomObject();
+            counter--;
+            if (counter <= 0)
+            {
+                break;
+            }
+        }
+        if (car == null)
+        {
+            return;
+        }
+
+        OceanForm1 form = new() { SetShip = car };
+        form.ShowDialog();
+    }
+
+    // Перерисовка коллекции
+    private void btnRefresh_Click(object sender, EventArgs e)
+    {
+        if (_company == null)
+        {
+            return;
+        }
+        pictureBox.Image = _company.Show();
+    }
+}

ProjectCruiser/ServiceForm2.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema 
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ProjectCruiser/ShipSharingService.cs

@@ -0,0 +1,69 @@
+using ProjectCruiser.DrawningSamples;
+namespace ProjectCruiser;
+
+public class ShipSharingService : AbstractCompany
+{
+    protected int MaxInRow { get; private set; }
+    protected int MaxInColon { get; private set; }
+
+    private int fromBorder = 20, fromCeiling = 20, between = 30;
+
+    public ShipSharingService(int picWidth, int picHeight,
+        ICollectionGenObj<DrawningBase> collection)
+        : base(picWidth, picHeight, collection)
+    {
+        MaxInRow = (picWidth - fromBorder - fromCeiling)
+            / (_placeSizeWidth + between);
+        MaxInColon = (picHeight - fromBorder - fromCeiling)
+            / _placeSizeHeight;
+    }
+
+    protected override void DrawBackground(Graphics g)
+    {
+        Pen pen = new(Color.Black, 2);
+
+        int currentH = fromCeiling, currentW = fromBorder;
+
+        for (int i = 0; i < MaxInRow; i++)
+        {
+            currentH = fromCeiling;
+            for (int j = 0; j < MaxInColon; j++)
+            {
+                g.DrawLine(pen, currentW + _placeSizeWidth,
+                    currentH, currentW, currentH);
+
+                g.DrawLine(pen, currentW, currentH,
+                    currentW, currentH + _placeSizeHeight);
+
+                currentH += _placeSizeHeight + 1;
+            }
+            currentW += _placeSizeWidth + between;
+        }
+    }
+
+    protected override void SetObjectsPosition()
+    {
+        int index_collection = 0;
+        int newX = fromBorder + 6, newY = fromCeiling + 6;
+
+        if (_collection != null)
+        {
+            for (int i = 0; i < MaxInColon; ++i)
+            {
+                newX = fromBorder + 2;
+                for (int j = 0; j < MaxInRow; ++j)
+                {
+                    if (_collection.GetItem(index_collection) != null)
+                    {
+                        _collection.GetItem(index_collection).SetPictureSize(_pictureWidth, _pictureHeight);
+                        _collection.GetItem(index_collection).SetPosition(newX, newY);
+                        newX += _placeSizeWidth + between + 2;
+                        index_collection++;
+                    }
+                }
+                newY += _placeSizeHeight + 2;
+            }
+        }
+    }
+}
+