code styled
diff --git a/src/sample/ArtRico.java b/src/sample/ArtRico.java
index d7081e8..fbed54d 100644
--- a/src/sample/ArtRico.java
+++ b/src/sample/ArtRico.java
@@ -17,20 +17,45 @@
 import java.util.HashSet;
 
 public class ArtRico extends Application {
+	final int sceneWidth = 1280;
+	final int sceneHeight = 640;
+	final int wallWidth = 10;
+	final int strokeWidth = 2;
+	final int topHeight = 30;
+	final int bottomHeight = 10;
+	final int playerHeight = 20;
+	final int playerPosY = 570;
+	final int playerWidthEasy = 280;
+	final int playerWidthMedium = 200;
+	final int playerWidthHard = 140;
+	final int playerSpeedEasy = 10;
+	final int playerSpeedMedium = 10;
+	final int playerSpeedHard = 10;
+	final int ballSpeedEasy = 5;
+	final int ballSpeedMedium = 5;
+	final int ballSpeedHard = 10;
+	final int ballSize = 20;
+	final int bricksN = 15;
+	final int bricksM = 8;
+	final int bricksHeight = 40;
+	final int bricksWidth = 80;
+	final int buttonWidth = 260;
+	final int buttonHeight = 80;
+
     Pane gameRoot;
     Pane menuRoot;
     Scene scene;
-    ArrayList<SimpleObject> bricks;              // массив кирпичей
-    Player player;                               // игрок
-    Ball ball;                                   // шар
-    SimpleObject leftWall;                       // левая стена
-    SimpleObject rightWall;                      // правая стена
-    SimpleObject top;                            // верхняя граница
-    SimpleObject bottom;                         // нижняя граница
-    static int score;                            // очки
-    Label scoreLabel;                            // лэйбл для очков
-    Bot bot;                                     // бот
-    static HashSet<String> currentlyActiveKeys;  // массив нажатых клавиш
+    ArrayList<SimpleObject> bricks;
+    Player player;
+    Ball ball;
+    SimpleObject leftWall;
+    SimpleObject rightWall;
+    SimpleObject top;
+    SimpleObject bottom;
+    static int score;
+    Label scoreLabel;
+    Bot bot;
+    static HashSet<String> currentlyActiveKeys;
     static HashSet<String> lastKey;
     boolean pause;
     AnimationTimer timer;
@@ -47,13 +72,14 @@
         prepareActionHandlers();
         primaryStage.setScene(scene);
         primaryStage.show();
+
         timer = new AnimationTimer() {
             @Override
             public void handle(long now)
-            {
+						{
                 if (ball.isGameWon()) {
                     showMessage("You won! Your score is: ");
-                }
+            		}
                 if(ball.isGameOver()) {
                     showMessage("You lose! Your score is: ");
                 }
@@ -82,37 +108,59 @@
     private Parent createContent(int mode) {
         pause = true;
         gameRoot = new Pane();
-        gameRoot.setPrefSize(1280,640);
-        Rectangle bg = new Rectangle(1280,640,Color.GREY);
-        leftWall = new SimpleObject(0,0,10,640,2,Color.ORANGE,Color.BEIGE);
-        rightWall = new SimpleObject(1270,0,10,640,2,Color.ORANGE,Color.BEIGE);
-        rightWall = new SimpleObject(1270,0,10,640,2,Color.ORANGE,Color.BEIGE);
-        bottom = new SimpleObject(0,640,1280,20,2,Color.ORANGE,Color.BEIGE);
-        top = new SimpleObject(0,0,1280,30,2,Color.ORANGE,Color.BEIGE);
+        gameRoot.setPrefSize(1280, 640);
+        Rectangle bg = new Rectangle(sceneWidth, sceneHeight, Color.GREY);
+        leftWall = new SimpleObject(0, 0, wallWidth, sceneHeight,
+				strokeWidth, Color.ORANGE, Color.BEIGE);
+        rightWall = new SimpleObject(sceneWidth-wallWidth, 0, wallWidth, sceneWidth,
+				strokeWidth, Color.ORANGE, Color.BEIGE);
+        bottom = new SimpleObject(0, sceneHeight, sceneWidth, bottomHeight,
+				strokeWidth, Color.ORANGE, Color.BEIGE);
+        top = new SimpleObject(0, 0, sceneWidth, topHeight,
+				strokeWidth, Color.ORANGE, Color.BEIGE);
         score = 0;
         scoreLabel = new Label("Score : " + score);
         scoreLabel.setLayoutX(40);
         scoreLabel.setLayoutY(0);
         scoreLabel.setFont(javafx.scene.text.Font.font(20));
-        if(mode == 0){
-            player = new Player(500,570,280,20,2,Color.ORANGE,Color.BEIGE,10,1270,10);
-            ball = new Ball(635,550,20,20,2,Color.ORANGE,Color.BEIGE,10,1270,30,640,5,5);
-        }
-        if(mode == 1){
-            player = new Player(540,570,200,20,2,Color.ORANGE,Color.BEIGE,10,1270,10);
-            ball = new Ball(635,550,20,20,2,Color.ORANGE,Color.BEIGE,10,1270,30,640,5,5);
-        }
-        if(mode == 2){
-            player = new Player(570,570,140,20,2,Color.ORANGE,Color.BEIGE,10,1270,10);
-            ball = new Ball(635,550,20,20,2,Color.ORANGE,Color.BEIGE,10,1270,30,640,10,10);
-        }
+
+		switch(mode){
+			case 0:{
+				player = new Player(sceneWidth / 2 - playerWidthEasy / 2, playerPosY, playerWidthEasy,
+						playerHeight, strokeWidth, Color.ORANGE, Color.BEIGE,
+						wallWidth, sceneWidth-wallWidth, playerSpeedEasy);
+				ball = new Ball(sceneWidth/2-ballSize/2, playerPosY-ballSize, ballSize, ballSize,
+						strokeWidth, Color.ORANGE, Color.BEIGE, wallWidth, sceneWidth - wallWidth,
+						topHeight, sceneHeight, ballSpeedEasy, ballSpeedEasy);
+				break;
+			}
+			case 1:{
+				player = new Player(sceneWidth / 2 - playerWidthMedium / 2, playerPosY, playerWidthMedium,
+						playerHeight, strokeWidth, Color.ORANGE,Color.BEIGE,
+						wallWidth, sceneWidth-wallWidth, playerSpeedMedium);
+				ball = new Ball(sceneWidth/2-ballSize/2, playerPosY-ballSize, ballSize, ballSize,
+						strokeWidth, Color.ORANGE, Color.BEIGE, wallWidth, sceneWidth - wallWidth,
+						topHeight, sceneHeight, ballSpeedMedium, ballSpeedMedium);
+				break;
+			}
+			case 2:{
+				player = new Player(sceneWidth / 2 - playerWidthHard / 2, playerPosY, playerWidthHard,
+						playerHeight, strokeWidth, Color.ORANGE, Color.BEIGE,
+						wallWidth, sceneWidth-wallWidth, playerSpeedHard);
+				ball = new Ball(sceneWidth/2-ballSize/2, playerPosY-ballSize, ballSize, ballSize,
+						strokeWidth, Color.ORANGE, Color.BEIGE, wallWidth, sceneWidth - wallWidth,
+						topHeight, sceneHeight, ballSpeedHard, ballSpeedHard);
+				break;
+			}
+
+		}
 
         ball.setPlayer(player);
         ball.setFlagsInFalse();
         bot = new Bot(player, ball);
-        gameRoot.getChildren().addAll(bg,player,ball,leftWall,rightWall,bottom,top,scoreLabel);
+        gameRoot.getChildren().addAll(bg, player, ball, leftWall, rightWall, bottom, top, scoreLabel);
         bricks = new ArrayList<>();
-        createBricks(15,8,80,40);
+        createBricks(bricksN, bricksM, bricksWidth, bricksHeight);
         return gameRoot;
     }
 
@@ -123,21 +171,22 @@
         bricks.clear();
         for (int i = 0; i < raw; i++) {
             for(int j = 0; j < colomn; j++) {
-                SimpleObject brick = new SimpleObject(j*(w)+40,i*(h)+65,w,h,2,Color.ORANGE,Color.BEIGE);
+                SimpleObject brick = new SimpleObject(j * w + 40,i * h + 65, w, h, 2, Color.ORANGE, Color.BEIGE);
                 bricks.add(brick);
                 gameRoot.getChildren().add(brick);
             }
         }
         ball.setBricks(bricks);
     }
+
     private void restart() {
         gameRoot.getChildren().remove(bricks);
-        createBricks(15,8,80,40);
+		createBricks(bricksN, bricksM, bricksWidth, bricksHeight);
         score = 0;
-        player.setTranslateX(570);
-        player.setTranslateY(570);
-        ball.setTranslateX(635);
-        ball.setTranslateY(550);
+        player.setTranslateX(sceneWidth / 2 - player.getWidth() / 2);
+        player.setTranslateY(playerPosY);
+        ball.setTranslateX(sceneWidth / 2 - ballSize / 2);
+        ball.setTranslateY(playerPosY - ballSize);
         ball.gameOver = false;
         ball.setFlagsInFalse();
     }
@@ -179,12 +228,13 @@
             }
         });
     }
+
     private void showMessage (String msg) {
         pause = true;
         Button button = new Button(msg + score);
         button.setLayoutX(510);
         button.setLayoutY(240);
-        button.setPrefSize(260,80);
+        button.setPrefSize(buttonWidth, buttonHeight);
         button.setOnAction(e -> {
             pause = false;
             button.setVisible(false);
@@ -195,22 +245,23 @@
         restart();
         gameRoot.getChildren().add(button);
     }
+
     private void showMenu(Stage primaryStage){
         menuRoot = new Pane();
-        menuRoot.setPrefSize(1280,640);
-        Rectangle bg = new Rectangle(1280,640,Color.GREY);
+        menuRoot.setPrefSize(sceneWidth, sceneHeight);
+        Rectangle bg = new Rectangle(sceneWidth, sceneHeight, Color.GREY);
         Button startButton = new Button("Start game");
         startButton.setLayoutX(510);
         startButton.setLayoutY(140);
-        startButton.setPrefSize(260,80);
+        startButton.setPrefSize(260, 80);
         startButton.setOnAction(e -> {
             startButton.setVisible(false);
             Button[] button = new Button[4];
             for(int i = 0; i < 4; i++) {
                 button[i] = new Button();
                 button[i].setLayoutX(510);
-                button[i].setLayoutY(i*100+140);
-                button[i].setPrefSize(260,80);
+                button[i].setLayoutY(i * 100 + 140);
+                button[i].setPrefSize(buttonWidth, buttonHeight);
                 menuRoot.getChildren().add(button[i]);
             }
             button[0].setText("Easy");
@@ -238,6 +289,7 @@
         primaryStage.setScene(scene);
         primaryStage.show();
     }
+
     public static void main(String[] args) {
         launch(args);
     }
diff --git a/src/sample/Ball.java b/src/sample/Ball.java
index 39117c1..b5c3373 100644
--- a/src/sample/Ball.java
+++ b/src/sample/Ball.java
@@ -14,15 +14,17 @@
     ArrayList<Integer> indexs;
     Rectangle rect;
     double speedX, kx;
-    double speedY, ky;          //
-    double leftBorder;          // коорд левой стены X
-    double rightBorder;         // коорд правой стены X
-    double topBorder;           // коорд. потолка Y
-    double bottomBorder;        // коорд. дна Y
-    boolean gameOver;           // флаг поражения
-    boolean gameWon;            // флаг победы
-    boolean lc, rc, tc, bc, pc; // флаги столкновений
-    public Ball(double x, double y, double w, double h, double sw, Color fillColor, Color strokeColor, double lb, double rb, double tb, double bb, double speedX, double SpeedY) {
+    double speedY, ky;
+    double leftBorder;
+    double rightBorder;
+    double topBorder;
+    double bottomBorder;
+    boolean gameOver;
+    boolean gameWon;
+    boolean lc, rc, tc, bc, pc;
+
+    public Ball(double x, double y, double w, double h, double sw, Color fillColor, Color strokeColor,
+                double lb, double rb, double tb, double bb, double speedX, double SpeedY) {
         super(x, y, w, h, sw, fillColor, strokeColor);
         gameOver = false;
         gameWon = false;
@@ -37,6 +39,7 @@
         ky = 1;
         kx = 0;
     }
+
     public void checkCollision(){
         if (this.getTranslateX() + speedX*kx <= leftBorder) {
             lc = true;
@@ -51,72 +54,86 @@
 
             gameOver = true;
         }
-        // коллизия с игроком низом
+        // collision with player
         if(ky > 0) {
-            if (this.getTranslateX() + this.getWidth()  > player.getTranslateX() && this.getTranslateX() < player.getTranslateX() + player.getWidth()) {
-                if (this.getTranslateY() <= player.getTranslateY() && this.getTranslateY() + this.getHeight() >= player.getTranslateY()) {
+            if (this.getTranslateX() + this.getWidth()  > player.getTranslateX() &&
+                    this.getTranslateX() < player.getTranslateX() + player.getWidth()) {
+                if (this.getTranslateY() <= player.getTranslateY() &&
+                        this.getTranslateY() + this.getHeight() >= player.getTranslateY()) {
                     pc = true;
                 }
             }
         }
-        // коллизия с игроком правым боком
+		// collision with player
         if(kx > 0) {
-            if (this.getTranslateY() + this.getHeight() > player.getTranslateY() && this.getTranslateY()  < player.getTranslateY() + player.getHeight()) {
-                if (this.getTranslateX()  <= player.getTranslateX() && this.getTranslateX() + this.getWidth()  >= player.getTranslateX()) {
+            if (this.getTranslateY() + this.getHeight() > player.getTranslateY() &&
+                    this.getTranslateY()  < player.getTranslateY() + player.getHeight()) {
+                if (this.getTranslateX()  <= player.getTranslateX() &&
+                        this.getTranslateX() + this.getWidth()  >= player.getTranslateX()) {
                     rc = true;
                 }
             }
         }
-        // коллизия с игроком левым боком
+		// collision with player
         if(kx < 0) {
-            if (this.getTranslateY() + this.getHeight()  > player.getTranslateY() && this.getTranslateY()  < player.getTranslateY() + player.getHeight()) {
-                if (this.getTranslateX()  <= player.getTranslateX() + player.getWidth() && this.getTranslateX() + this.getWidth()  >= player.getTranslateX() + player.getWidth()) {
+            if (this.getTranslateY() + this.getHeight()  > player.getTranslateY() &&
+                    this.getTranslateY()  < player.getTranslateY() + player.getHeight()) {
+                if (this.getTranslateX()  <= player.getTranslateX() + player.getWidth() &&
+                        this.getTranslateX() + this.getWidth()  >= player.getTranslateX() + player.getWidth()) {
                     lc = true;
                 }
             }
         }
-        // коллизия с кирпичом низом
+		// collision with brick
         if(ky > 0) {
             for (int i = 0; i < bricks.size(); i++) {
                 SimpleObject brick = bricks.get(i);
-                if (this.getTranslateX() + this.getWidth()  > brick.getTranslateX() && this.getTranslateX()  < brick.getTranslateX() + brick.getWidth()) {
-                    if (this.getTranslateY()  <= brick.getTranslateY() && this.getTranslateY() + this.getHeight()  >= brick.getTranslateY()) {
+                if (this.getTranslateX() + this.getWidth()  > brick.getTranslateX() &&
+                        this.getTranslateX()  < brick.getTranslateX() + brick.getWidth()) {
+                    if (this.getTranslateY()  <= brick.getTranslateY() &&
+                            this.getTranslateY() + this.getHeight()  >= brick.getTranslateY()) {
                         bc = true;
                         indexs.add(i);
                     }
                 }
             }
         }
-        // коллизия с кирпичом верхом
+		// collision with brick
         if(ky < 0) {
             for (int i = 0; i < bricks.size(); i++) {
                 SimpleObject brick = bricks.get(i);
-                if (this.getTranslateX() + this.getWidth()  > brick.getTranslateX() && this.getTranslateX()  < brick.getTranslateX() + brick.getWidth()) {
-                    if (this.getTranslateY()  <= brick.getTranslateY() + brick.getHeight() && this.getTranslateY() + this.getHeight()  >= brick.getTranslateY() + brick.getHeight()) {
+                if (this.getTranslateX() + this.getWidth()  > brick.getTranslateX() &&
+                        this.getTranslateX()  < brick.getTranslateX() + brick.getWidth()) {
+                    if (this.getTranslateY()  <= brick.getTranslateY() + brick.getHeight() &&
+                            this.getTranslateY() + this.getHeight()  >= brick.getTranslateY() + brick.getHeight()) {
                         tc = true;
                         indexs.add(i);
                     }
                 }
             }
         }
-        // коллизия с кирпичом правым боком
+		// collision with brick
         if(kx > 0) {
             for (int i = 0; i < bricks.size(); i++) {
                 SimpleObject brick = bricks.get(i);
-                if (this.getTranslateY() + this.getHeight()  > brick.getTranslateY() && this.getTranslateY()  < brick.getTranslateY() + brick.getHeight()) {
-                    if (this.getTranslateX()  <= brick.getTranslateX() && this.getTranslateX() + this.getWidth()  >= brick.getTranslateX()) {
+                if (this.getTranslateY() + this.getHeight()  > brick.getTranslateY() &&
+                        this.getTranslateY()  < brick.getTranslateY() + brick.getHeight()) {
+                    if (this.getTranslateX()  <= brick.getTranslateX() &&
+                            this.getTranslateX() + this.getWidth()  >= brick.getTranslateX()) {
                         lc = true;
                         indexs.add(i);
                     }
                 }
             }
         }
-        // коллизия с кирпичом левым боком
+		// collision with brick
         if(kx < 0) {
             for (int i = 0; i < bricks.size(); i++) {
                 SimpleObject brick = bricks.get(i);
-                if (this.getTranslateY() + this.getHeight()  > brick.getTranslateY() && this.getTranslateY()  < brick.getTranslateY() + brick.getHeight()) {
-                    if (this.getTranslateX()  <= brick.getTranslateX() + brick.getWidth() && this.getTranslateX() + this.getWidth()  >= brick.getTranslateX() + brick.getWidth()) {
+                if (this.getTranslateY() + this.getHeight()  > brick.getTranslateY() &&
+                        this.getTranslateY()  < brick.getTranslateY() + brick.getHeight()) {
+                    if (this.getTranslateX()  <= brick.getTranslateX() + brick.getWidth() &&
+                            this.getTranslateX() + this.getWidth()  >= brick.getTranslateX() + brick.getWidth()) {
                         lc = true;
                         indexs.add(i);
                     }
@@ -124,9 +141,9 @@
             }
         }
     }
+
     public void move() {
-        checkCollision(); // проверка коллизий, установка флагов
-        // изменение скорости в зависимости от флагов
+        checkCollision();
         if (tc ^ bc) {
             ky = -ky;
         }
@@ -135,11 +152,12 @@
         }
         if (pc) {
             double k;
-            k = (this.getTranslateX()+this.getWidth()/2-player.getTranslateX()-player.getWidth()/2) / (player.getWidth()/2);
+            k = (this.getTranslateX()+this.getWidth()/2-player.getTranslateX()
+                    -player.getWidth()/2) / (player.getWidth()/2);
             kx = k;
             ky = -0.8 - (1 - Math.abs(k));
         }
-        // уничтожение кирпичей
+        // destroying bricks
         Set ixs = new HashSet(indexs);
         indexs.clear();
         indexs.addAll(ixs);
@@ -155,33 +173,29 @@
             gameWon = true;
         }
 
-        // перемещение мяча
+        // move ball
         setTranslateX(getTranslateX() + speedX*kx);
         setTranslateY(getTranslateY() + speedY*ky);
-        setFlagsInFalse(); // сброс флагов
+        setFlagsInFalse(); // reset flags
     }
-    public void setSpeedX(double speedX) {
-        this.speedX = speedX;
-    }
-    public void setSpeedY(double speedY) {
-        this.speedY = speedY;
-    }
+
     public void setBricks(ArrayList<SimpleObject> bricks) {
-        /*for(SimpleObject b : this.bricks) {
-            b.setVisible(false);
-        }*/
         this.bricks.clear();
         this.bricks.addAll(bricks);
     }
+
     public void setPlayer(Player player) {
         this.player = player;
     }
+
     public boolean isGameOver() {
         return gameOver;
     }
+
     public boolean isGameWon() {
         return gameWon;
     }
+
     public void setFlagsInFalse() {
         lc = false;
         rc = false;
diff --git a/src/sample/Bot.java b/src/sample/Bot.java
index 6848b1b..b2b7d44 100644
--- a/src/sample/Bot.java
+++ b/src/sample/Bot.java
@@ -30,6 +30,5 @@
             time = 0;
         }
         time++;
-
     }
 }
diff --git a/src/sample/Player.java b/src/sample/Player.java
index 9379382..b7e5c8d 100644
--- a/src/sample/Player.java
+++ b/src/sample/Player.java
@@ -8,18 +8,22 @@
     double speed;
     double leftBorder;
     double rightBorder;
-    public Player(double x, double y, double w, double h, double sw, Color fillColor,Color strokeColor, double lb, double rb, double speed) {
+
+    public Player(double x, double y, double w, double h, double sw, Color fillColor,Color strokeColor,
+                  double lb, double rb, double speed) {
         super(x, y, w, h, sw, fillColor, strokeColor);
         leftBorder = lb;
         rightBorder = rb;
         this.speed = speed;
     }
+
     public void moveLeft() {
         if(this.getTranslateX() <= leftBorder) {
             return;
         }
         setTranslateX(this.getTranslateX() - speed);
     }
+
     public void moveRight() {
         if(this.getTranslateX() + this.getWidth() >= rightBorder) {
             return;
diff --git a/src/sample/SimpleObject.java b/src/sample/SimpleObject.java
index 7c32753..0eab22e 100644
--- a/src/sample/SimpleObject.java
+++ b/src/sample/SimpleObject.java
@@ -8,7 +8,7 @@
     Rectangle rect;
 
     public SimpleObject(double x, double y, double w, double h, double sw, Color fillColor,Color strokeColor) {
-        rect = new Rectangle(w,h,fillColor);
+        rect = new Rectangle(w, h, fillColor);
         this.setTranslateX(x);
         this.setTranslateY(y);
         this.getChildren().add(rect);