some minor fixes

src/Main.java

@@ -1,3 +1,5 @@
+import frames.FrameBattleship;
+
 import java.io.IOException;
 
 public class Main {

src/drawing_objects/DrawingBattleship.java

@@ -1,3 +1,8 @@
+package drawing_objects;
+
+import entities.EntityBattleship;
+import enums.DirectionType;
+
 import java.awt.*;
 
 public class DrawingBattleship {
@@ -86,7 +91,9 @@ public class DrawingBattleship {
         graphics2D.drawRect(startPosX + 70, startPosY + 12, 18, 26);
         graphics2D.drawOval(startPosX + 94, startPosY + 19, 12, 12);
         //блоки
-        drawingBlocks.drawBlocks(graphics2D, startPosX, startPosY);
+        if (drawingBlocks != null){
+            drawingBlocks.drawBlocks(graphics2D, startPosX, startPosY);
+        }
         //орудийная башня
         if (entityBattleship.getTurret()) {
             int[] shieldX = new int[] {startPosX + 112, startPosX + 112, startPosX + 119, startPosX + 119, };

src/drawing_objects/DrawingBlocks.java

@@ -1,3 +1,7 @@
+package drawing_objects;
+
+import enums.BlocksNumber;
+
 import java.awt.*;
 
 public class DrawingBlocks {

src/entities/EntityBattleship.java

@@ -1,3 +1,5 @@
+package entities;
+
 import java.awt.*;
 import java.util.function.Supplier;
 

src/enums/BlocksNumber.java

@@ -1,3 +1,5 @@
+package enums;
+
 public enum BlocksNumber {
     TWO,
     FOUR,

src/enums/DirectionType.java

@@ -1,3 +1,5 @@
+package enums;
+
 public enum DirectionType {
     UP,
     DOWN,

src/frames/FrameBattleship.java

@@ -1,3 +1,8 @@
+package frames;
+
+import drawing_objects.DrawingBattleship;
+import enums.DirectionType;
+
 import javax.imageio.ImageIO;
 import javax.swing.*;
 import java.awt.*;
@@ -5,6 +10,7 @@ import java.awt.event.ActionEvent;
 import java.io.File;
 import java.io.IOException;
 import java.util.Random;
+
 public class FrameBattleship extends JFrame {
     private DrawingBattleship drawingBattleship;
     private JComponent pictureBox;