I am currently trying to create a game with falling "asteroids" that a ship has to dodge. I have currently created a pane that is a large circle stacked with multiple smaller circles. Unfortunately, the pane's "hitbox" is a square/rectangle, rather than a circle, which is frustrating. The other alternate way of fixing this would be to create a circle and fill it with an image of an asteroid, but I couldn't find this anywhere. I know of:
circle.setFill(Color.WHATEVER);
but i would like for it to look like an asteroid, not just a simple grey circle falling. To sum it up, how can I set an image to a shape? Or, if there is a way to change the hitbox of a stackpane, a way to do that would also help fix my issue!
Any help is greatly appreciated! Thanks!
EDIT: Below are the 4 files that will make a simplified version of my game work with the same problem:
DodgerRemake:
package javafxapplication6;
import javafx.animation.AnimationTimer;
import javafx.application.Application;
import javafx.beans.binding.BooleanBinding;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.input.KeyCode;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class DodgerRemake extends Application
{
private Spaceship thisSpaceShip = new Spaceship();
private BoxPane gamePane = new BoxPane(thisSpaceShip);
BorderPane pane = new BorderPane();
private BooleanProperty upPressed = new SimpleBooleanProperty();
private BooleanProperty rightPressed = new SimpleBooleanProperty();
private BooleanProperty downPressed = new SimpleBooleanProperty();
private BooleanProperty leftPressed = new SimpleBooleanProperty();
private BooleanBinding anyPressed = upPressed.or(rightPressed).or(downPressed).or(leftPressed);
protected BorderPane getPane()
{
StackPane centerPane = new StackPane();
centerPane.getChildren().add(gamePane);
pane.setCenter(centerPane);
Button thisButton = new Button("Start");
thisButton.setAlignment(Pos.CENTER);
thisButton.setFocusTraversable(false);
thisButton.setOnAction(new startGame());
pane.setLeft(thisButton);
return pane;
}
@Override
public void start(Stage primaryStage) {
// Create a scene and place it in the stage
Scene scene = new Scene(getPane(), 960, 800);
primaryStage.setTitle("Dodger"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.setResizable(false);
primaryStage.show(); // Display the stage
scene.setOnKeyPressed(e -> {
if (e.getCode() == KeyCode.UP) {
upPressed.set(true);
}
if (e.getCode() == KeyCode.DOWN) {
downPressed.set(true);
}
if (e.getCode() == KeyCode.RIGHT) {
rightPressed.set(true);
}
if (e.getCode() == KeyCode.LEFT) {
leftPressed.set(true);
}
});
scene.setOnKeyReleased(e -> {
if (e.getCode() == KeyCode.UP) {
upPressed.set(false);
}
if (e.getCode() == KeyCode.DOWN) {
downPressed.set(false);
}
if (e.getCode() == KeyCode.RIGHT) {
rightPressed.set(false);
}
if (e.getCode() == KeyCode.LEFT) {
leftPressed.set(false);
}
});
AnimationTimer timer = new AnimationTimer()
{
@Override
public void handle(long timestamp) {
if (upPressed.get()){
gamePane.moveShipUp();
}
if (downPressed.get()){
gamePane.moveShipDown();
}
if (rightPressed.get()) {
gamePane.moveShipRight();
}
if (leftPressed.get()) {
gamePane.moveShipLeft();
}
}
};
anyPressed.addListener((obs, wasPressed, isNowPressed) ->
{
if (isNowPressed) {
timer.start();
} else {
timer.stop();
}
});
}
class startGame implements EventHandler<ActionEvent>
{
@Override
public void handle(ActionEvent e)
{
gamePane.addSpaceship();
gamePane.startGame();
}
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
BoxPane:
package javafxapplication6;
import java.util.Random;
import javafx.animation.Animation;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.scene.layout.Pane;
import javafx.util.Duration;
class BoxPane extends Pane
{
private Spaceship spaceShip;
private Timeline asteroids;
private double x;
private double y;
BoxPane(Spaceship thisSpaceShip)
{
spaceShip = thisSpaceShip;
spaceShip.setRotate(180);
}
public void addSpaceship()
{
getChildren().add(spaceShip);
x = 400 - spaceShip.getWidth()/2;
y = 740;
spaceShip.setTranslateX(x);
spaceShip.setTranslateY(y);
}
public void moveShipLeft()
{
if(x > 0)
{
spaceShip.setTranslateX(x-5);
x = x-5;
}
else
{
spaceShip.setTranslateX(0);
x = 0;
}
}
public void moveShipRight()
{
if(x+spaceShip.getWidth() < getWidth())
{
spaceShip.setTranslateX(x+5);
x = x+5;
}
else
{
spaceShip.setTranslateX(getWidth() - spaceShip.getWidth());
x = getWidth() - spaceShip.getWidth();
}
}
public void moveShipUp()
{
if(y > 0)
{
spaceShip.setTranslateY(y-5);
y = y-5;
}
else
{
spaceShip.setTranslateY(0);
y = 0;
}
}
public void moveShipDown()
{
if(y+spaceShip.getHeight() < getHeight())
{
spaceShip.setTranslateY(y+5);
y = y+5;
}
else
{
spaceShip.setTranslateY(getHeight() - spaceShip.getHeight());
y = getHeight() - spaceShip.getHeight();
}
}
public void startGame()
{
//addSpaceship();
asteroids = new Timeline(new KeyFrame(Duration.seconds(.5), e -> displayAsteroid()));
asteroids.setCycleCount(Timeline.INDEFINITE);
asteroids.play();
}
public void displayAsteroid()
{
Asteroid asteroid = new Asteroid();
getChildren().add(asteroid);
Random rand = new Random();
int randomNum = rand.nextInt((int) (getWidth() - asteroid.getWidth()));
asteroid.setY(-200);
asteroid.setX(randomNum);
asteroid.setTranslateY(asteroid.getY());
asteroid.setTranslateX(asteroid.getX());
Timeline timeline = new Timeline();
KeyFrame keyFrame = new KeyFrame(Duration.millis(50), event -> {
if(asteroid.getY() > getHeight()|| asteroid.getBoundsInParent().intersects(spaceShip.getBoundsInParent()))
{
timeline.stop();
getChildren().remove(asteroid);
}
else
{
asteroid.setY(asteroid.getY()+5);
asteroid.setTranslateY(asteroid.getY());
}
});
timeline.setCycleCount(Animation.INDEFINITE);
timeline.getKeyFrames().add(keyFrame);
timeline.play();
}
}
asteroid class:
package javafxapplication6;
import javafx.geometry.Pos;
import java.util.Random;
import java.util.Vector;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Ellipse;
public class Asteroid extends StackPane
{
private Ellipse asteroid = new Ellipse();
private Ellipse hole1 = new Ellipse();
private Ellipse hole2 = new Ellipse();
private Ellipse hole3 = new Ellipse();
private int speed;
private double y = 0;
private double x = 0;
Asteroid()
{
Random rand = new Random();
int asteroidNum = rand.nextInt(10);
if(asteroidNum < 6)
{
asteroidNum = 0;
}
else if(asteroidNum < 8)
{
asteroidNum = 1;
}
else
{
asteroidNum = 2;
}
StackPane thisAsteroid = new StackPane();
VBox vbox = new VBox();
HBox hbox = new HBox();
vbox.setAlignment(Pos.CENTER);
hbox.setAlignment(Pos.CENTER);
asteroid.setFill(Color.GREY);
asteroid.setStroke(Color.DIMGREY);
hole1.setFill(Color.DIMGREY);
hole1.setStroke(Color.BLACK);
hole2.setFill(Color.DIMGREY);
hole2.setStroke(Color.BLACK);
hole3.setFill(Color.DIMGREY);
hole3.setStroke(Color.BLACK);
switch(asteroidNum)
{
case 0: asteroid1();
vbox.setSpacing(10);
hbox.setSpacing(10);
break;
case 1: asteroid2();
vbox.setSpacing(15);
hbox.setSpacing(15);
break;
case 2: asteroid3();
vbox.setSpacing(25);
hbox.setSpacing(25);
break;
}
int holeLayout = rand.nextInt(3);
switch(holeLayout)
{
case 0: hbox.getChildren().addAll(hole1, hole2);
vbox.getChildren().addAll(hole3, hbox);
thisAsteroid.getChildren().addAll(asteroid, vbox);
break;
case 1: vbox.getChildren().addAll(hole2, hole3);
hbox.getChildren().addAll(vbox, hole1);
thisAsteroid.getChildren().addAll(asteroid, hbox);
break;
case 2: vbox.getChildren().addAll(hole1, hole3);
hbox.getChildren().addAll(hole2, vbox);
thisAsteroid.getChildren().addAll(asteroid, hbox);
break;
case 3: hbox.getChildren().addAll(hole1, hole2);
vbox.getChildren().addAll(hbox, hole3);
thisAsteroid.getChildren().addAll(asteroid, vbox);
break;
}
this.getChildren().add(thisAsteroid);
}
public void asteroid1()
{
speed = 10;
asteroid.setRadiusX(40);
asteroid.setRadiusY(35);
asteroid.setStrokeWidth(3);
hole1.setRadiusX(7);
hole1.setRadiusY(8);
hole2.setRadiusX(9);
hole2.setRadiusY(6);
hole3.setRadiusX(6);
hole3.setRadiusY(5);
}
public void asteroid2()
{
speed = 6;
asteroid.setRadiusX(60);
asteroid.setRadiusY(50);
asteroid.setStrokeWidth(5);
hole1.setRadiusX(10);
hole1.setRadiusY(12);
hole2.setRadiusX(12);
hole2.setRadiusY(10);
hole3.setRadiusX(14);
hole3.setRadiusY(13);
}
public void asteroid3()
{
speed = 4;
asteroid.setRadiusX(100);
asteroid.setRadiusY(90);
asteroid.setStrokeWidth(8);
hole1.setRadiusX(20);
hole1.setRadiusY(18);
hole2.setRadiusX(18);
hole2.setRadiusY(22);
hole3.setRadiusX(23);
hole3.setRadiusY(19);
}
public void setY(double nY)
{
y = nY;
}
public void setX(double nX)
{
x = nX;
}
public double getX()
{
return x;
}
public double getY()
{
return y;
}
public int getSpeed()
{
return speed;
}
}
spaceship class:
package javafxapplication6;
import javafx.geometry.Pos;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Ellipse;
import javafx.scene.shape.Rectangle;
public class Spaceship extends StackPane
{
private Rectangle leftWingBottom = new Rectangle();
private Rectangle leftWingGun = new Rectangle();
private Rectangle leftWingDesign = new Rectangle();
private Rectangle leftWingAttachment = new Rectangle();
private Rectangle leftTransparent = new Rectangle();
private Rectangle rightWingBottom = new Rectangle();
private Rectangle rightWingGun = new Rectangle();
private Rectangle rightWingDesign = new Rectangle();
private Rectangle rightWingAttachment = new Rectangle();
private Rectangle rightTransparent = new Rectangle();
private Rectangle centerCompartmentBottom = new Rectangle();
private Rectangle centerCompartmentDesign = new Rectangle();
private Ellipse centerCompartmentTop = new Ellipse();
Spaceship()
{
HBox ship = new HBox();
VBox leftWing = new VBox();
VBox rightWing = new VBox();
VBox leftAttachment = new VBox();
VBox rightAttachment = new VBox();
StackPane leftWingStack = new StackPane();
StackPane rightWingStack = new StackPane();
StackPane centerCompartmentShip = new StackPane();
leftTransparent.setFill(Color.TRANSPARENT);
rightTransparent.setFill(Color.TRANSPARENT);
// creates the right wing
rightWingBottom.setHeight(30);
rightWingBottom.setWidth(8);
rightWingBottom.setStrokeWidth(1);
rightWingDesign.setHeight(25);
rightWingDesign.setWidth(3);
rightWingStack.setAlignment(Pos.CENTER);
rightWingStack.getChildren().addAll(rightWingBottom, rightWingDesign);
rightWingGun.setHeight(5);
rightWingGun.setWidth(2);
rightWing.setAlignment(Pos.TOP_CENTER);
rightWing.getChildren().addAll(rightWingStack, rightWingGun);
// creates the left wing and gun
leftWingBottom.setHeight(30);
leftWingBottom.setWidth(8);
leftWingBottom.setStrokeWidth(1);
leftWingDesign.setHeight(25);
leftWingDesign.setWidth(3);
leftWingStack.setAlignment(Pos.CENTER);
leftWingStack.getChildren().addAll(leftWingBottom, leftWingDesign);
leftWingGun.setHeight(5);
leftWingGun.setWidth(2);
leftWing.setAlignment(Pos.TOP_CENTER);
leftWing.getChildren().addAll(leftWingStack, leftWingGun);
// attaches the cockpit and right wing together
rightTransparent.setHeight(5);
rightTransparent.setWidth(5);
rightWingAttachment.setHeight(3);
rightWingAttachment.setWidth(5);
rightAttachment.setAlignment(Pos.TOP_CENTER);
rightAttachment.getChildren().addAll(rightTransparent, rightWingAttachment);
// attaches the cockpit and left wing together
leftTransparent.setHeight(5);
leftTransparent.setWidth(5);
leftWingAttachment.setHeight(3);
leftWingAttachment.setWidth(5);
leftAttachment.setAlignment(Pos.TOP_CENTER);
leftAttachment.getChildren().addAll(leftTransparent, leftWingAttachment);
// creates the cockpit
centerCompartmentBottom.setHeight(25);
centerCompartmentBottom.setWidth(20);
centerCompartmentBottom.setStrokeWidth(2);
centerCompartmentTop.setRadiusX(10);
centerCompartmentTop.setRadiusY(25);
centerCompartmentTop.setStrokeWidth(2);
centerCompartmentDesign.setHeight(25);
centerCompartmentDesign.setWidth(5);
centerCompartmentShip.setAlignment(Pos.TOP_CENTER);
centerCompartmentShip.getChildren().addAll(centerCompartmentTop, centerCompartmentBottom, centerCompartmentDesign);
rightWingBottom.setFill(Color.WHITE);
rightWingBottom.setStroke(Color.GREY);
leftWingBottom.setFill(Color.WHITE);
leftWingBottom.setStroke(Color.GREY);
rightWingGun.setFill(Color.WHITE);
leftWingGun.setFill(Color.WHITE);
rightWingDesign.setFill(Color.TRANSPARENT);
leftWingDesign.setFill(Color.TRANSPARENT);
rightWingAttachment.setFill(Color.WHITE);
rightWingAttachment.setStroke(Color.GREY);
leftWingAttachment.setFill(Color.WHITE);
leftWingAttachment.setStroke(Color.GREY);
centerCompartmentBottom.setFill(Color.WHITE);
centerCompartmentBottom.setStroke(Color.GREY);
centerCompartmentTop.setFill(Color.WHITE);
centerCompartmentTop.setStroke(Color.GREY);
centerCompartmentDesign.setFill(Color.TRANSPARENT);
// adds everything to final hbox
ship.getChildren().addAll(rightWing,
rightAttachment,
centerCompartmentShip,
leftAttachment,
leftWing);
// adds it to the SpaceShip object
this.getChildren().add(ship);
}
}
Hope this helps, thanks!
