Solution for lab08 - use CSV

.gitignore

@@ -2,3 +2,5 @@
 .settings/
 .project
 .classpath
+/high_score.obj
+/high_score.csv

src/main/java/lab/GameController.java

 	package lab;
 
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Random;
+import java.util.Set;
+
 import javafx.animation.AnimationTimer;
 import javafx.beans.value.ObservableValue;
+import javafx.collections.FXCollections;
 import javafx.fxml.FXML;
 import javafx.scene.canvas.Canvas;
 import javafx.scene.control.Label;
+import javafx.scene.control.ListView;
 import javafx.scene.control.Slider;
+import javafx.scene.control.TextField;
 
 public class GameController {
 
@@ -26,12 +41,22 @@ public class GameController {
 	@FXML
 	private Label hits;
 	
+	@FXML 
+	private ListView<Score> scoreList;
+	
+	@FXML
+	private TextField nameTextField;
+	
+	private List<Score> highScores = new LinkedList<>();
+	
 	private AnimationTimer animationTimer;
 	
 	public GameController() {
 	}
 	
 	public void startGame() {
+		initScoreList();
+
 		this.world = new World(canvas.getWidth(), canvas.getHeight());
 		this.world.setGameListener(new GameListenerImpl());
 		//Draw scene on a separate thread to avoid blocking UI.
@@ -70,6 +95,50 @@ public class GameController {
 		world.setCannonStrength(newValue.doubleValue());
 	}
 	
+	@FXML
+	private void gameOverPressed() {
+		Score score = new Score(new Random().nextInt(11), nameTextField.getText());
+		scoreList.getItems().add(score);
+		Collections.sort(scoreList.getItems(),  new ScoreComparator().reversed());
+	}
+	
+	@FXML
+	private void highScoresPressed() {
+		Set<Score> tempScores = new HashSet<>();
+		tempScores.addAll(highScores);
+		highScores.clear();
+		highScores.addAll(tempScores);
+		Collections.sort(highScores,  new ScoreComparator().reversed());
+		initScoreList();
+	}
+
+	@FXML
+	private void savePressed() throws IOException {
+		try(PrintWriter pw = new PrintWriter(new FileWriter("high_score.csv"))){
+			for(Score score: highScores) {
+				pw.printf("%s;%d\n", score.getName(), score.getScore());
+			}
+		}
+	}
+	
+	
+	@FXML
+	private void loadPressed() throws IOException{
+		highScores.clear();
+		try(BufferedReader br = new BufferedReader(new FileReader("high_score.csv"))){
+			String line;
+			while(null != (line = br.readLine())) {
+				String [] tokens = line.split(";");
+				highScores.add(new Score(Integer.parseInt(tokens[1]), tokens[0]));
+			}
+		}
+		initScoreList();
+	}
+
+	private void initScoreList() {
+		scoreList.setItems(FXCollections.observableList(highScores));
+	}
+	
 	private final class AnimationTimerImpl extends AnimationTimer {
 		private Long previous;
 
@@ -98,4 +167,6 @@ public class GameController {
 		}
 		
 	}
+	
+	
 }

src/main/java/lab/Score.java

+package lab;
+
+import java.io.Serializable;
+
+public class Score implements Serializable{
+	
+	private static final long serialVersionUID = 712213568495641939L;
+	
+	private final int score;
+	private final String name;
+	public Score(int score, String name) {
+		super();
+		this.score = score;
+		this.name = name;
+	}
+	
+	
+	public String getName() {
+		return name;
+	}
+	
+	public int getScore() {
+		return score;
+	}
+
+	@Override
+	public String toString() {
+		return name + ": " + score;
+	}
+	
+	@Override
+	public boolean equals(Object obj) {
+			if (obj instanceof Score) {
+				Score score = (Score) obj;
+				return this.name.equals(score.name);
+			}
+			
+			return false;
+	}
+	
+	@Override
+	public int hashCode() {
+		return name.hashCode();
+	}
+}

src/main/java/lab/ScoreComparator.java

+package lab;
+
+import java.util.Comparator;
+
+public class ScoreComparator implements Comparator<Score> {
+
+	@Override
+	public int compare(Score o1, Score o2) {
+		return Integer.compare(o1.getScore(), o2.getScore());
+	}
+
+}

src/main/resources/lab/GameView.fxml

@@ -5,12 +5,15 @@
 <?import javafx.scene.canvas.Canvas?>
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.Label?>
+<?import javafx.scene.control.ListView?>
 <?import javafx.scene.control.Slider?>
+<?import javafx.scene.control.TextField?>
 <?import javafx.scene.layout.BorderPane?>
 <?import javafx.scene.layout.ColumnConstraints?>
 <?import javafx.scene.layout.GridPane?>
 <?import javafx.scene.layout.HBox?>
 <?import javafx.scene.layout.RowConstraints?>
+<?import javafx.scene.layout.VBox?>
 
 <BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" xmlns="http://javafx.com/javafx/17" xmlns:fx="http://javafx.com/fxml/1" fx:controller="lab.GameController">
    <bottom>
@@ -41,11 +44,26 @@
                   <Label text="Shoots:" />
                   <Label fx:id="shoots" text="0" GridPane.columnIndex="1" />
                   <Label text="Hits:" GridPane.rowIndex="1" />
-                  <Label fx:id="hits" text="0" GridPane.rowIndex="1" GridPane.columnIndex="1" />
+                  <Label fx:id="hits" text="0" GridPane.columnIndex="1" GridPane.rowIndex="1" />
                </children>
             </GridPane>
             <Canvas fx:id="canvas" height="400.0" width="600.0" />
          </children>
       </Group>
    </center>
+   <left>
+      <VBox prefHeight="200.0" prefWidth="100.0" BorderPane.alignment="CENTER">
+         <children>
+            <Label text="Jméno:" />
+            <TextField fx:id="nameTextField" promptText="Jméno" />
+            <Button mnemonicParsing="false" onAction="#gameOverPressed" text="Game Over" />
+            <Button mnemonicParsing="false" onAction="#highScoresPressed" text="High Score" />
+            <Button mnemonicParsing="false" onAction="#savePressed" text="Save" />
+            <Button mnemonicParsing="false" onAction="#loadPressed" text="Load" />
+         </children>
+      </VBox>
+   </left>
+   <right>
+      <ListView fx:id="scoreList" prefHeight="200.0" prefWidth="200.0" BorderPane.alignment="CENTER" />
+   </right>
 </BorderPane>