реализация стратегии перемещения

LocomativeProject/LocomativeProject/Drawnings/DirectionType.cs

@@ -5,6 +5,10 @@
     /// </summary>
     public enum DirectionType
     {
+        /// <summary>
+        /// Неизвестное направление
+        /// </summary>
+        Unknow = -1,
         /// <summary>
         /// Вверх
         /// </summary>

LocomativeProject/LocomativeProject/Drawnings/DrawningBaseLocomotive.cs

@@ -39,6 +39,28 @@ namespace LocomativeProject.Drawnings
         /// </summary>
         private readonly int _drawningBaseLocomotiveHeight = 60;
 
+
+        /// <summary>
+        /// Координата X объекта
+        /// </summary>
+        public int? GetPosX => _startPosX;
+
+        /// <summary>
+        /// Координата Y объекта
+        /// </summary>
+        public int? GetPosY => _startPosY;
+
+        /// <summary>
+        /// Ширина объекта
+        /// </summary>
+        public int GetWidth => _drawningBaseLocomotiveWidth;
+
+        /// <summary>
+        /// Высота объекта
+        /// </summary>
+        public int GetHeight => _drawningBaseLocomotiveHeight;
+
+
         /// <summary>
         /// Пустой конструктор
         /// </summary>

LocomativeProject/LocomativeProject/LocomotiveProject.Designer.cs

@@ -37,6 +37,8 @@
             this.buttonLeft = new System.Windows.Forms.Button();
             this.buttonRight = new System.Windows.Forms.Button();
             this.buttonCreateLocomotive = new System.Windows.Forms.Button();
+            this.comboBox1 = new System.Windows.Forms.ComboBox();
+            this.buttonStrategyStep = new System.Windows.Forms.Button();
             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.pictureBoxLocomotive)).BeginInit();
             this.SuspendLayout();
@@ -129,11 +131,35 @@
             this.buttonCreateLocomotive.UseVisualStyleBackColor = true;
             this.buttonCreateLocomotive.Click += new System.EventHandler(this.ButtonCreateLocomotive_Click);
             // 
+            // comboBox1
+            // 
+            this.comboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBox1.FormattingEnabled = true;
+            this.comboBox1.Items.AddRange(new object[] {
+            "К центру",
+            "К краю"});
+            this.comboBox1.Location = new System.Drawing.Point(667, 12);
+            this.comboBox1.Name = "comboBox1";
+            this.comboBox1.Size = new System.Drawing.Size(121, 23);
+            this.comboBox1.TabIndex = 8;
+            // 
+            // buttonStrategyStep
+            // 
+            this.buttonStrategyStep.Location = new System.Drawing.Point(713, 41);
+            this.buttonStrategyStep.Name = "buttonStrategyStep";
+            this.buttonStrategyStep.Size = new System.Drawing.Size(75, 23);
+            this.buttonStrategyStep.TabIndex = 9;
+            this.buttonStrategyStep.Text = "Шаг";
+            this.buttonStrategyStep.UseVisualStyleBackColor = true;
+            this.buttonStrategyStep.Click += new System.EventHandler(this.buttonStrategyStep_Click);
+            // 
             // LocomotiveProject
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(800, 450);
+            this.Controls.Add(this.buttonStrategyStep);
+            this.Controls.Add(this.comboBox1);
             this.Controls.Add(this.buttonCreateLocomotive);
             this.Controls.Add(this.buttonRight);
             this.Controls.Add(this.buttonLeft);
@@ -160,5 +186,7 @@
         private Button buttonLeft;
         private Button buttonRight;
         private Button buttonCreateLocomotive;
+        private ComboBox comboBox1;
+        private Button buttonStrategyStep;
     }
 }

LocomativeProject/LocomativeProject/LocomotiveProject.cs

@@ -11,6 +11,7 @@ using System.Windows.Forms;
 using LocomotiveProject.Entities;
 using LocomativeProject.Drawnings;
 using LocomotiveProject.Drawnings;
+using LocomativeProject.MovementStrategy;
 
 namespace LocomativeProject
 {
@@ -18,9 +19,12 @@ namespace LocomativeProject
     {
         private DrawningBaseLocomotive? _drawningLocomotive;
 
+        private AbstractStrategy? _strategy;
+
         public LocomotiveProject()
         {
             InitializeComponent();
+            _strategy = null;
         }
 
         private void Draw()
@@ -61,6 +65,8 @@ namespace LocomativeProject
 
             _drawningLocomotive.SetPictureSize(pictureBoxLocomotive.Width, pictureBoxLocomotive.Height);
             _drawningLocomotive.SetPosition(random.Next(10, 100), random.Next(10, 100));
+            _strategy = null;
+            comboBox1.Enabled = true;
             Draw();
         }
 
@@ -107,5 +113,48 @@ namespace LocomativeProject
                 Draw();
             }
         }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void buttonStrategyStep_Click(object sender, EventArgs e)
+        {
+            if (_drawningLocomotive == null)
+            {
+                return;
+            }
+
+            if (comboBox1.Enabled)
+            {
+                _strategy = comboBox1.SelectedIndex switch
+                {
+                    0 => new MoveToCenter(),
+                    1 => new MoveToBorder(),
+                    _ => null,
+                };
+                if (_strategy == null)
+                {
+                    return;
+                }
+                _strategy.SetData(new MoveableLocomotive(_drawningLocomotive), pictureBoxLocomotive.Width, pictureBoxLocomotive.Height);
+            }
+
+            if (_strategy == null)
+            {
+                return;
+            }
+
+            comboBox1.Enabled = false;
+            _strategy.MakeStep();
+            Draw();
+
+            if (_strategy.GetStatus() == StrategyStatus.Finish)
+            {
+                comboBox1.Enabled = true;
+                _strategy = null;
+            }
+        }
     }
 }

LocomativeProject/LocomativeProject/MovementStrategy/AbstractStrategy.cs

@@ -0,0 +1,140 @@
+namespace LocomativeProject.MovementStrategy
+{
+	/// <summary>
+	/// Класс-стратегия перемещения объекта
+	/// </summary>
+	public abstract class AbstractStrategy
+	{
+		/// <summary>
+		/// Перемещаемый объект
+		/// </summary>
+		private IMoveableObject? _moveableObject;
+
+		/// <summary>
+		/// Статус перемещения
+		/// </summary>
+		private StrategyStatus _state = StrategyStatus.NotInit;
+
+		/// <summary>
+		/// Ширина поля
+		/// </summary>
+		protected int FieldWidth { get; private set; }
+
+		/// <summary>
+		/// Высота поля
+		/// </summary>
+		protected int FieldHeight { get; private set; }
+
+		/// <summary>
+		/// Получение статуса перемещения
+		/// </summary
+		public StrategyStatus GetStatus() { return _state; }
+
+		/// <summary>
+		/// Установка данных
+		/// </summary>
+		/// <param name="moveableObject">Перемещаемый объект</param>
+		/// <param name="width">Ширина поля</param>
+		/// <param name="height">Высота поля</param>
+		public void SetData(IMoveableObject moveableObject, int width, int height)
+		{
+			if (moveableObject == null)
+			{
+				_state = StrategyStatus.NotInit;
+				return;
+			}
+
+			_state = StrategyStatus.InProgress;
+			_moveableObject = moveableObject;
+			FieldWidth = width;
+			FieldHeight = height;
+		}
+
+		/// <summary>
+		/// Шаг перемещения
+		/// </summary>
+		public void MakeStep()
+		{
+			if (_state != StrategyStatus.InProgress)
+			{
+				return;
+			}
+
+			if (IsTargetDestinaion())
+			{
+				_state = StrategyStatus.Finish;
+				return;
+			}
+
+			MoveToTarget();
+		}
+
+		/// <summary>
+		/// Перемещение влево
+		/// </summary>
+		/// <returns>Результат перемещения (true - удалось переместиться, false - неудача)</returns>
+		protected bool MoveLeft() => MoveTo(MovementDirection.Left);
+
+		/// <summary>
+		/// Перемещение вправо
+		/// </summary>
+		/// <returns>Результат перемещения (true - удалось переместиться, false - неудача)</returns>
+		protected bool MoveRight() => MoveTo(MovementDirection.Right);
+
+		/// <summary>
+		/// Перемещение вверх
+		/// </summary>
+		/// <returns>Результат перемещения (true - удалось переместиться, false - неудача)</returns>
+		protected bool MoveUp() => MoveTo(MovementDirection.Up);
+
+		/// <summary>
+		/// Перемещение вниз
+		/// </summary>
+		/// <returns>Результат перемещения (true - удалось переместиться, false - неудача)</returns>
+		protected bool MoveDown() => MoveTo(MovementDirection.Down);
+
+		/// <summary>
+		/// Параметры объекта
+		/// </summary>
+		protected ObjectParameters? GetObjectParameters => _moveableObject?.GetObjectPosition;
+
+		/// <summary>
+		/// Шаг объекта
+		/// </summary>
+		/// <returns></returns>
+		protected int? GetStep()
+		{
+			if (_state != StrategyStatus.InProgress)
+			{
+				return null;
+			}
+			return _moveableObject?.GetStep;
+		}
+
+		/// <summary>
+		/// Перемещение к цели
+		/// </summary>
+		protected abstract void MoveToTarget();
+
+		/// <summary>
+		/// Достигнута ли цель
+		/// </summary>
+		/// <returns></returns>
+		protected abstract bool IsTargetDestinaion();
+
+		/// <summary>
+		/// Попытка перемещения в требуемом направлении
+		/// </summary>
+		/// <param name="movementDirection">Направление</param>
+		/// <returns>Результат попытки (true - удалось переместиться, false - неудача)</returns>
+		private bool MoveTo(MovementDirection movementDirection)
+		{
+			if (_state != StrategyStatus.InProgress)
+			{
+				return false;
+			}
+
+			return _moveableObject?.TryMoveObject(movementDirection) ?? false;
+		}
+	}
+}

LocomativeProject/LocomativeProject/MovementStrategy/IMoveableObject.cs

@@ -0,0 +1,23 @@
+namespace LocomativeProject.MovementStrategy;
+/// <summary>
+/// Интерфейс для работы с перемещаемым объектом
+/// </summary>
+public interface IMoveableObject
+{
+	/// <summary>
+	/// Получение координаты объекта
+	/// </summary>
+	ObjectParameters? GetObjectPosition { get; }
+
+	/// <summary>
+	/// Шаг объекта
+	/// </summary>
+	int GetStep { get; }
+
+	/// <summary>
+	/// Попытка переместить объект в указанном направлении
+	/// </summary>
+	/// <param name="direction">Направление</param>
+	/// <returns>true - объект перемещен, false - перемещение невозможно</returns>
+	bool TryMoveObject(MovementDirection direction);
+}

LocomativeProject/LocomativeProject/MovementStrategy/MoveToBorder.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LocomativeProject.MovementStrategy;
+
+public class MoveToBorder : AbstractStrategy
+{
+	protected override bool IsTargetDestinaion()
+	{
+		ObjectParameters? objParams = GetObjectParameters;
+		if (objParams == null)
+		{
+			return false;
+		}
+
+		return objParams.RightBorder - GetStep() <= FieldWidth && objParams.DownBorder - GetStep() < FieldHeight &&
+			objParams.RightBorder + GetStep() >= FieldWidth && objParams.DownBorder + GetStep() >= FieldHeight;
+	}
+
+	protected override void MoveToTarget()
+	{
+		ObjectParameters? objParams = GetObjectParameters;
+		if (objParams == null)
+		{
+			return;
+		}
+
+		if (objParams.RightBorder + GetStep() <= FieldWidth)
+        {
+			MoveRight();
+		}
+		if (objParams.DownBorder + GetStep() <= FieldHeight)
+		{
+			MoveDown();
+		}
+	}
+}
+

LocomativeProject/LocomativeProject/MovementStrategy/MoveToCenter.cs

@@ -0,0 +1,54 @@
+namespace LocomativeProject.MovementStrategy;
+
+/// <summary>
+/// Стратегия перемещения объекта в центр экрана
+/// </summary>
+public class MoveToCenter : AbstractStrategy
+{
+	protected override bool IsTargetDestinaion()
+	{
+		ObjectParameters? objParams = GetObjectParameters;
+		if (objParams == null)
+		{
+			return false;
+		}
+
+		return objParams.ObjectMiddleHorizontal - GetStep() <= FieldWidth / 2 && objParams.ObjectMiddleHorizontal + GetStep() >= FieldWidth / 2 &&
+			objParams.ObjectMiddleVertical - GetStep() <= FieldHeight / 2 && objParams.ObjectMiddleVertical + GetStep() >= FieldHeight / 2;
+	}
+
+	protected override void MoveToTarget()
+	{
+		ObjectParameters? objParams = GetObjectParameters;
+		if (objParams == null)
+		{
+			return;
+		}
+
+		int diffX = objParams.ObjectMiddleHorizontal - FieldWidth / 2;
+		if (Math.Abs(diffX) > GetStep())
+		{
+			if (diffX > 0)
+			{
+				MoveLeft();
+			}
+			else
+			{
+				MoveRight();
+			}
+		}
+
+		int diffY = objParams.ObjectMiddleVertical - FieldHeight / 2;
+		if (Math.Abs(diffY) > GetStep())
+		{
+			if (diffY > 0)
+			{
+				MoveUp();
+			}
+			else
+			{
+				MoveDown();
+			}
+		}
+	}
+}

LocomativeProject/LocomativeProject/MovementStrategy/MoveableLocomotive.cs

@@ -0,0 +1,64 @@
+using LocomativeProject.Drawnings;
+namespace LocomativeProject.MovementStrategy;
+
+/// <summary>
+/// Класс-реализация IMoveableObject с использованием DrawningLocomotive
+/// </summary>
+public class MoveableLocomotive : IMoveableObject
+{
+	/// <summary>
+	/// Поле-объект класса DrawningBaseLocomotive или его наследника
+	/// </summary>
+	private readonly DrawningBaseLocomotive? _locomotive = null;
+
+	/// <summary>
+	/// Конструктор
+	/// </summary>
+	/// <param name="_locomotive">Объект класса DrawningBaseLocomotive</param>
+	public MoveableLocomotive(DrawningBaseLocomotive locomotive)
+	{
+		_locomotive = locomotive;
+	}
+
+	public ObjectParameters? GetObjectPosition
+	{
+		get
+		{
+			if (_locomotive == null || _locomotive._EntityLocomotive == null || !_locomotive.GetPosX.HasValue || !_locomotive.GetPosY.HasValue)
+			{
+				return null;
+			}
+			return new ObjectParameters(_locomotive.GetPosX.Value, _locomotive.GetPosY.Value, _locomotive.GetWidth, _locomotive.GetHeight);
+		}
+	}
+
+	public int GetStep => (int)(_locomotive?._EntityLocomotive?.Step ?? 0);
+
+	public bool TryMoveObject(MovementDirection direction)
+	{
+		if (_locomotive == null || _locomotive._EntityLocomotive == null)
+		{
+			return false;
+		}
+
+		return _locomotive.MoveTransport(GetDirectionType(direction));
+	}
+
+	/// <summary>
+	/// Конвертация из MovementDirection в DirectionType
+	/// </summary>
+	/// <param name="direction">MovementDirection</param>
+	/// <returns>DirectionType</returns>
+	private static DirectionType GetDirectionType(MovementDirection direction)
+	{
+		return direction switch
+		{
+			MovementDirection.Left => DirectionType.Left,
+			MovementDirection.Right => DirectionType.Right,
+			MovementDirection.Up => DirectionType.Up,
+			MovementDirection.Down => DirectionType.Down,
+			_ => DirectionType.Unknow,
+		};
+	}
+}
+

LocomativeProject/LocomativeProject/MovementStrategy/MovementDirection.cs

@@ -0,0 +1,26 @@
+namespace LocomativeProject.MovementStrategy;
+/// <summary>
+/// Направление перемещения
+/// </summary>
+public enum MovementDirection : byte
+{
+	/// <summary>
+	/// Вверх
+	/// </summary>
+	Up = 1,
+
+	/// <summary>
+	/// Вниз
+	/// </summary>
+	Down,
+
+	/// <summary>
+	/// Влево
+	/// </summary>
+	Left,
+
+	/// <summary>
+	/// Вправо
+	/// </summary>
+	Right
+}

LocomativeProject/LocomativeProject/MovementStrategy/ObjectParameters.cs

@@ -0,0 +1,71 @@
+namespace LocomativeProject.MovementStrategy;
+/// <summary>
+/// Параметры-координаты объекта
+/// </summary>
+public class ObjectParameters
+{
+	/// <summary>
+	/// Координата X
+	/// </summary>
+	private readonly int _x;
+
+	/// <summary>
+	/// Координата Y
+	/// </summary>
+	private readonly int _y;
+
+	/// <summary>
+	/// Ширина объекта
+	/// </summary>
+	private readonly int _width;
+
+	/// <summary>
+	/// Высота объекта
+	/// </summary>
+	private readonly int _height;
+
+	/// <summary>
+	/// Левая граница
+	/// </summary>
+	public int LeftBorder => _x;
+
+	/// <summary>
+	/// Верхняя граница
+	/// </summary>
+	public int TopBorder => _y;
+
+	/// <summary>
+	/// Правая граница
+	/// </summary>
+	public int RightBorder => _x + _width;
+
+	/// <summary>
+	/// Нижняя граница
+	/// </summary>
+	public int DownBorder => _y + _height;
+
+	/// <summary>
+	/// Середина объекта
+	/// </summary>
+	public int ObjectMiddleHorizontal => _x + _width / 2;
+
+	/// <summary>
+	/// Середина объекта
+	/// </summary>
+	public int ObjectMiddleVertical => _y + _height / 2;
+
+	/// <summary>
+	/// Конструктор
+	/// </summary>
+	/// <param name="x">Координата X</param>
+	/// <param name="y">Координата Y</param>
+	/// <param name="width">Ширина объекта</param>
+	/// <param name="height">Высота объекта</param>
+	public ObjectParameters(int x, int y, int width, int height)
+	{
+		_x = x;
+		_y = y;
+		_width = width;
+		_height = height;
+	}
+}

LocomativeProject/LocomativeProject/MovementStrategy/StrategyStatus.cs

@@ -0,0 +1,21 @@
+namespace LocomativeProject.MovementStrategy;
+/// <summary>
+/// Статус выполнения операции перемещения
+/// </summary>
+public enum StrategyStatus
+{
+	/// <summary>
+	/// Все готово к началу
+	/// </summary>
+	NotInit,
+
+	/// <summary>
+	/// Выполняется
+	/// </summary>
+	InProgress,
+
+	/// <summary>
+	/// Завершено
+	/// </summary>
+	Finish
+}