所以我正在做一个游戏，敌人跟随玩家，玩家杀死他们。如何使敌人的ImageView跟随玩家。
我尝试了一些if句子，但实际上我不知道。我也到处搜索，但我只发现其他人使用Swing进行搜索，我对很多事情感到非常困惑。我使用Javafx btw。
public class Main extends Application{
private static final int HEIGHT = 720;
private static final int WIDTH = 1280;
Scene scene;
BorderPane root, htpLayout;
VBox buttons, paragraphs, images;
Button startButton, htpButton, htpReturnButton, leaderboardButton, exitButton;
Text gameName, paragraph1, paragraph2, paragraph3;
Pane gameLayout;
ImageView background;
Game game = new Game();
Player player = new Player();
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage window) throws Exception {
root = new BorderPane();
background = new ImageView("stick mob slayer background.png");
background.fitWidthProperty().bind(window.widthProperty());
background.fitHeightProperty().bind(window.heightProperty());
root.getChildren().add(background);
htpLayout = new BorderPane();
buttons = new VBox(15);
scene = new Scene(root, WIDTH, HEIGHT);
scene.getStylesheets().add("mobslayer/style.css");
gameName = new Text("Mob Slayer Unlimited");
gameName.setFont(Font.font("Complex", 50));
gameName.setFill(Color.WHITE);
root.setAlignment(gameName, Pos.CENTER_LEFT);
root.setTop(gameName);
startButton = new Button("Start Game");
startButton.setOnAction(e -> window.setScene(game.getScene()));
htpButton = new Button("How To Play");
htpButton.setOnAction(e -> scene.setRoot(htpLayout));
leaderboardButton = new Button("Leaderboard");
exitButton = new Button("Exit");
exitButton.setOnAction(e -> Platform.exit());
buttons.getChildren().addAll(startButton, htpButton, leaderboardButton, exitButton);
root.setCenter(buttons);
buttons.setAlignment(Pos.CENTER);
paragraphs = new VBox(30);
paragraph1 = new Text("Objektive\nNär spelet börjar kommer huvudkaraktären möta monster.\n"
+ "Ju längre in i spelet du kommer, ju fler och svårare monster dyker upp.\n"
+ "Ditt mål är att överleva så länge som möjligt.");
paragraph1.setFont(Font.font("Dubai", 13));
paragraph1.setFill(Color.BLACK);
paragraph2 = new Text("Movement\nAlla monster dras imot dig, så du måste akta dig.\n"
+ "Detta gör du med hjälp av piltangenterna.");
paragraph2.setFont(Font.font("Dubai", 13));
paragraph2.setFill(Color.BLACK);
paragraph3 = new Text("Special Effects\nDu kan också attackera tillbaka med en lätt attack(c)\n"
+ "eller med en specialattack(space) som dödar alla monster på skärmen.\n"
+ "Du kan dasha(x) för att röra dig snabbare åt ett håll.");
paragraph3.setFont(Font.font("Dubai", 13));
paragraph3.setFill(Color.BLACK);
paragraphs.getChildren().addAll(paragraph1, paragraph2, paragraph3);
htpReturnButton = new Button("Return");
htpReturnButton.setOnAction(e->scene.setRoot(root));
htpLayout.setBottom(htpReturnButton);
htpLayout.setAlignment(htpReturnButton,Pos.TOP_CENTER);
images = new VBox(30);
// Image image1 = new Image(new FileInputStream("resources\\cod zombies.jpg"));
// final ImageView image11 = new ImageView(image1);
// image11.setFitHeight(100);
// image11.setFitWidth(100);
// image11.setPreserveRatio(true);
//
// Image image2 = new Image(new FileInputStream("resources\\arrowkeys.png")) ;
// final ImageView image22 = new ImageView(image2);
// image22.setFitHeight(100);
// image22.setFitWidth(100);
// image22.setPreserveRatio(true);
//
// Image image3 = new Image(new FileInputStream("resources\\keys.png")) ;
// final ImageView image33 = new ImageView(image3);
// image33.setFitHeight(100);
// image33.setFitWidth(100);
// image33.setPreserveRatio(true);
//
// images.getChildren().addAll(image11, image22, image33);
//
paragraphs.setAlignment(Pos.TOP_LEFT);
htpLayout.setLeft(paragraphs);
htpLayout.setRight(images);
window.setTitle("Mob Slayer Unlimited");
window.setScene(scene);
window.setResizable(false);
window.show();
}
}
public class Game {
private static final int HEIGHT = 720;
private static final int WIDTH = 1280;
private Scene scene;
Pane root;
Text health, stamina, wave, kills;
int waveCounter = 1, killCounter = 0;
Button restartButton, pauseButton;
Line limitUp;
Player player = new Player();
Enemies enemy = new Enemies();
public Game() {
health = new Text(50, 30, "HP: " + player.getHealth());
health.setFont(Font.font("BankGothic Lt BT", 30));
health.setFill(Color.WHITE);
stamina = new Text(50, 80, "STAMINA: " + player.getStamina());
stamina.setFont(Font.font("BankGothic Lt BT", 30));
stamina.setFill(Color.WHITE);
wave = new Text(1050, 30, "WAVE: " + waveCounter);
wave.setFont(Font.font("BankGothic Lt BT", 30));
wave.setFill(Color.WHITE);
kills = new Text(1050, 80, "KILLS: " + killCounter);
kills.setFont(Font.font("BankGothic Lt BT", 30));
kills.setFill(Color.WHITE);
restartButton = new Button("RESTART");
restartButton.setFont(Font.font("BankGothic Lt BT", 30));
restartButton.setOnAction(e -> restart());
restartButton.setLayoutX(350);
restartButton.setLayoutY(20);
pauseButton = new Button("PAUSE");
pauseButton.setFont(Font.font("BankGothic Lt BT", 30));
pauseButton.setOnAction(e -> restart());
pauseButton.setLayoutX(650);
pauseButton.setLayoutY(20);
limitUp = new Line(0, 100, 1280, 100);
limitUp.setStroke(Color.WHITE);
root = new Pane(player.getSlayer(), limitUp, player.getSlayerHitbox(), health, stamina, wave, kills, restartButton, pauseButton, enemy.getEnemy());
root.setStyle("-fx-background-color: black");
enemy.enemyMovement();
movePlayerTo(WIDTH / 2, HEIGHT / 2);
scene = new Scene(root, WIDTH, HEIGHT);
scene.setOnKeyPressed(new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent event) {
switch (event.getCode()) {
case W: player.goUp = true; break;
case S: player.goDown = true; break;
case A: player.goLeft = true; break;
case D: player.goRight = true; break;
case K: player.running = true; break;
}
}
});
scene.setOnKeyReleased(new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent event) {
switch (event.getCode()) {
case W: player.goUp = false; break;
case S: player.goDown = false; break;
case A: player.goLeft = false; break;
case D: player.goRight = false; break;
case K: player.running = false; break;
}
}
});
AnimationTimer timer = new AnimationTimer() {
@Override
public void handle(long now) {
int dx = 0, dy = 0;
if (player.goUp) dy -= 2;
if (player.goDown) dy += 2;
if (player.goRight) dx += 2;
if (player.goLeft) dx -= 2;
if (player.running) { dx *= 2; dy *= 2; }
enemy.enemyMovement();
movePlayerBy(dx, dy);
}
};
timer.start();
}
public Scene getScene() {
return scene;
}
// I took this methods for movement from Github
public void movePlayerBy(int dx, int dy) {
if (dx == 0 && dy == 0) return;
final double cx = player.getSlayer().getBoundsInLocal().getWidth() / 2;
final double cy = player.getSlayer().getBoundsInLocal().getHeight() / 2;
double x = cx + player.getSlayer().getLayoutX() + dx;
double y = cy + player.getSlayer().getLayoutY() + dy;
movePlayerTo(x, y);
}
public void movePlayerTo(double x, double y) {
final double cx = player.getSlayer().getBoundsInLocal().getWidth() / 2;
final double cy = player.getSlayer().getBoundsInLocal().getHeight() / 2;
if (x - cx >= 0 &&
x + cx <= WIDTH &&
y - cy >= 0 &&
y + cy <= HEIGHT) {
player.getSlayer().relocate(x - cx, y - cy);
player.getSlayerHitbox().relocate(x - cx + 37, y - cy + 35);
}
}
public class Player {
private int health;
private int damage;
private int stamina;
private Image slayerImage;
private ImageView slayer;
private Rectangle slayerHitbox;
boolean running, goUp, goDown, goRight, goLeft;
public Player () {
health = 5;
damage = 1;
stamina = 5;
slayerImage = new Image("stick mob slayer.png", 100, 100, true, true);
slayer = new ImageView(slayerImage);
slayerHitbox = new Rectangle(10, 50);
}
public int getDamage() {
return damage;
}
public void setDamage(int damage) {
this.damage = damage;
}
public int getHealth() {
return health;
}
public void setHealth(int health) {
this.health = health;
}
public int getStamina() {
return stamina;
}
public void setStamina(int stamina) {
this.stamina = stamina;
}
public ImageView getSlayer() {
return slayer;
}
public Rectangle getSlayerHitbox() {
slayerHitbox.setFill(Color.TRANSPARENT);
return slayerHitbox;
}
}
public class Enemies {
private int health;
private int speed;
private Image enemyImage;
private ImageView enemy;
private Rectangle enemyHitbox;
Player player = new Player();
public Enemies () {
health = 1;
speed = 1;
enemyImage = new Image("stick enemy.png", 100, 100, true, true);
enemy = new ImageView(enemyImage);
enemyHitbox = new Rectangle(10, 50);
}
public int getHealth() {
return health;
}
public void setHealth(int health) {
this.health = health;
}
public int getSpeed() {
return speed;
}
public void setSpeed(int speed) {
this.speed = speed;
}
public ImageView getEnemy () {
return enemy;
}
public Rectangle getEnemyHitbox() {
enemyHitbox.setFill(Color.YELLOW);
return enemyHitbox;
}
}
这是我到目前为止所做的一切。我将不胜感激任何帮助。如果可能的话，我想知道如何使敌人也从屏幕边界的随机点出现。预先感谢。
答案 0 :(得分：1)
您应该先尝试更简单的方法，例如实施A *路径搜索算法或上面带有某些单元的网格，然后再尝试玩游戏并提出此类问题