add setCount in DrawingEngines

Canvas.java

@@ -2,14 +2,14 @@ import javax.swing.*;
 import java.awt.*;
 
 public class Canvas extends JComponent {
-    FormAircraft form;
+    Form form;
-    public Canvas(FormAircraft form) {
+    public Canvas(Form form) {
         this.form = form;
     }
 
     @Override
     public void paintComponent(Graphics g) {
         Graphics2D g2 = (Graphics2D) g;
-        form.draw(g2);
+        form.Draw(g2);
     }
 }

DrawingEngines.java

@@ -5,11 +5,14 @@ public class DrawingEngines {
     private Color color;
 
     public void Init(int count, Color bodyColor) {
+        setCount(count);
+        color = bodyColor;
+    }
+
+    public void setCount(int count) {
         if(count <= 2) enginesCount = EnginesCount.Two;
         else if(count >= 6) enginesCount = EnginesCount.Six;
         else enginesCount = EnginesCount.Four;
-
-        color = bodyColor;
     }
 
     public void draw(Graphics2D g, int startPosX, int startPosY) {

Form.java

@@ -0,0 +1,5 @@
+import java.awt.*;
+
+public interface Form {
+    void Draw(Graphics2D g);
+}

FormAircraft.java

@@ -5,7 +5,7 @@ import java.awt.event.ComponentAdapter;
 import java.awt.event.ComponentEvent;
 import java.util.Random;
 
-public class FormAircraft {
+public class FormAircraft implements Form {
     private JButton createButton;
     private JButton upButton;
     private JButton rightButton;
@@ -88,7 +88,8 @@ public class FormAircraft {
         });
     }
 
-    public void draw(Graphics2D g) {
+    @Override
+    public void Draw(Graphics2D g) {
         if(_airFighter == null) return;
         _airFighter.DrawTransport(g);
     }