ASDV-Java/Semester 3/Assignments/DonorProject/src/anim/BouncingBall.java

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package anim;

import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.beans.property.DoubleProperty;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.control.Label;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Rectangle;
import javafx.util.Duration;

/**
 *
 * @author asdv
 */
public class BouncingBall extends Pane
{

    public int pScore = 0;
    public int cScore = 0;
    GridPane textDisplay = new GridPane();
    Rectangle racket = new Rectangle();

    public final double radius = 10;                // ball size 40
    private double x = radius, y = radius;          // coordinates of ball
    private double dx = 1, dy = 1;                  // direction of the ball
    private Circle circle = new Circle(x, y, radius); // her majesty, the ball
    private Timeline animation;                     // animate the ball
    private Label playerScore = new Label("Your Score: 0");
    private Label compScore = new Label("Computer Score: 0");

    public BouncingBall()
    {
        racket.setWidth(70);
        racket.setHeight(20);
        racket.relocate(0, 580);
        textDisplay.add(playerScore, 0, 0);
        textDisplay.add(compScore, 0, 1);

        circle.setFill(Color.BROWN);
        getChildren().addAll(circle, racket, textDisplay);

        animation = new Timeline(
                new KeyFrame(Duration.millis(50), (ActionEvent event)
                        ->
                {
                    moveBall();
                    if (y >= (getHeight() - 20))
                    {
                        boolean intersected = intersection();
                        if (intersected && circle.getCenterX() <= racket.getX() / 2)
                        {
                            System.out.println("Intersected.");
                            dx *= -1;
                            dy *= -1;
                            playerScored();
                        } 
                        else
                        {
                            if (intersected && circle.getCenterX() >= racket.getX() / 2)
                            {
                                playerScored();
                                dy *= -1;
                            } 
                            else
                            {
                                if (y >= (getHeight() - 40))
                                {
                                        computerScored();
                                        dy *= -1;
                                }
                            }
                        }
                    }
                }));
        animation.setCycleCount(Timeline.INDEFINITE);
        animation.setRate(animation.getRate() * 20);
        animation.play();
    }

    private void moveBall()
    {
        if (x < radius || x > getWidth() - radius)
        {
            dx *= -1;
        }
        if (y < radius || y > getHeight() - radius)
        {
            dy *= -1;
        }

        x += dx;
        y += dy;
        circle.setCenterX(x);
        circle.setCenterY(y);
    }

    public void playerScored()
    {
        playerScore.setText("Your Score: " + (++this.pScore));
    }

    public void computerScored()
    {
        compScore.setText("Computer Score: " + (++this.cScore));
    }

    public boolean intersection()
    {
        boolean intersected = racket.getBoundsInParent().intersects(circle.getBoundsInParent());

        if (intersected)
        {
            return true;
        } 
        else
        {
            return false;
        }
    }

    public void moveRacket(double x)
    {
        racket.relocate(x, 580);
    }

    public void play()
    {
        animation.play();
    }

    public void pause()
    {
        animation.pause();
    }

    public void increaseSpeed()
    {
        animation.setRate(animation.getRate() * 1.5);
    }

    public void decreaseSpeed()
    {
        animation.setRate(animation.getRate() * 1.5 > 0 ? animation.getRate() / 1.5 : 0);
    }

    public DoubleProperty rateProperty()
    {
        return animation.rateProperty();
    }

}