Add Snake game

snake/src/main/java/ru/job4j/snake/Cell.java

@@ -1,46 +1,4 @@
 package ru.job4j.snake;
 
-import java.util.Objects;
-
-public class Cell {
-    private final int x;
-    private final int y;
-
-    public Cell(int x, int y) {
-        this.x = x;
-        this.y = y;
-    }
-
-    @Override
-    public String toString() {
-        return "Cell[" + x + ", " + y + ']';
-    }
-
-    public int getX() {
-        return x;
-    }
-
-    public int getY() {
-        return y;
-    }
-
-
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        Cell cell = (Cell) o;
-        return x == cell.x
-                && y == cell.y;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(x, y);
-    }
+public record Cell(int x, int y) {
 }

snake/src/main/java/ru/job4j/snake/Main.java

@@ -3,7 +3,6 @@
 import javafx.application.Application;
 import javafx.application.Platform;
 import javafx.scene.Group;
-import javafx.scene.Node;
 import javafx.scene.Scene;
 import javafx.scene.input.KeyEvent;
 import javafx.scene.layout.BorderPane;
@@ -37,8 +36,8 @@ private Rectangle buildRectangle(int x, int y, int size) {
 
     private Rectangle block(Cell cell, Color color) {
         Rectangle rect = new Rectangle();
-        rect.setX(cell.getX() * 40 + 5);
-        rect.setY(cell.getY() * 40 + 5);
+        rect.setX(cell.x() * 40 + 5);
+        rect.setY(cell.y() * 40 + 5);
         rect.setHeight(30);
         rect.setWidth(30);
         rect.setFill(color);

snake/src/main/java/ru/job4j/snake/Snake.java

@@ -1,12 +1,12 @@
 package ru.job4j.snake;
 
-import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
 
 public class Snake {
-    private List<Cell> body = new ArrayList<>();
-    private Cell apple;
-    private Direction direction = Direction.RIGHT;
+    private final List<Cell> body = new CopyOnWriteArrayList<>();
+    private volatile Cell apple;
+    private volatile Direction direction = Direction.RIGHT;
 
     public Snake(List<Cell> cells) {
         body.addAll(cells);
@@ -23,10 +23,10 @@ void directionTo(Direction direction) {
     boolean step() {
          var tail = body.get(body.size() - 1);
          var next = switch (direction) {
-             case RIGHT -> new Cell(tail.getX() + 1, tail.getY());
-             case LEFT -> new Cell(tail.getX() - 1, tail.getY());
-             case UP -> new Cell(tail.getX(), tail.getY() - 1);
-             case DOWN -> new Cell(tail.getX(), tail.getY() + 1);
+             case RIGHT -> new Cell(tail.x() + 1, tail.y());
+             case LEFT -> new Cell(tail.x() - 1, tail.y());
+             case UP -> new Cell(tail.x(), tail.y() - 1);
+             case DOWN -> new Cell(tail.x(), tail.y() + 1);
          };
          var eat = next.equals(apple);
          if (!eat) {