import javafx.animation.AnimationTimer;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.image.Image;
import javafx.scene.input.KeyCode;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import java.util.ArrayList;
import java.util.List;
public class PlaneWar extends Application {
private final int WIDTH = 800;
private final int HEIGHT = 600;
private final int PLAYER_SPEED = 5;
private final int BULLET_SPEED = 10;
private final int ENEMY_SPEED = 3;
private final int SCORE_STEP = 10;
private final int ENEMY_GENERATE_INTERVAL = 100;
private final Image playerImage = new Image("file:player.png");
private final Image enemyImage = new Image("file:enemy.png");
private final Image bulletImage = new Image("file:bullet.png");
private int score = 0;
private int enemyGenerateCount = 0;
private boolean upPressed = false;
private boolean downPressed = false;
private boolean leftPressed = false;
private boolean rightPressed = false;
private List<Bullet> playerBullets = new ArrayList<>();
private List<Bullet> enemyBullets = new ArrayList<>();
private List<Enemy> enemies = new ArrayList<>();
private Player player = new Player(100, 300, playerImage);
private class Bullet {
private int x, y;
private Image image;
public Bullet(int x, int y, Image image) {
this.x = x;
this.y = y;
this.image = image;
}
public void move(boolean up) {
if (up) {
y -= BULLET_SPEED;
} else {
y += BULLET_SPEED;
}
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public Image getImage() {
return image;
}
}
private class Enemy {
private int x, y;
private Image image;
private int speed;
private int health;
public Enemy(int x, int y, Image image, int speed, int health) {
this.x = x;
this.y = y;
this.image = image;
this.speed = speed;
this.health = health;
}
public void move() {
x -= speed;
}
public boolean shoot() {
if (Math.random() < 0.01) {
enemyBullets.add(new Bullet(x + 25, y + 50, bulletImage));
return true;
}
return false;
}
public boolean isHit(int x, int y) {
if (x > this.x && x < this.x + 50 && y > this.y && y < this.y + 50) {
return true;
}
return false;
}
public void hit() {
health--;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public Image getImage() {
return image;
}
public int getHealth() {
return health;
}
}
private class Player {
private int x, y;
private Image image;
private int health;
public Player(int x, int y, Image image) {
this.x = x;
this.y = y;
this.image = image;
this.health = 3;
}
public void move() {
if (upPressed && y > 0) {
y -= PLAYER_SPEED;
}
if (downPressed && y < HEIGHT - 50) {
y += PLAYER_SPEED;
}
if (leftPressed && x > 0) {
x -= PLAYER_SPEED;
}
if (rightPressed && x < WIDTH - 50) {
x += PLAYER_SPEED;
}
}
public boolean shoot() {
if (Math.random() < 0.05) {
playerBullets.add(new Bullet(x + 25, y - 10, bulletImage));
return true;
}
return false;
}
public boolean isHit(int x, int y) {
if (x > this.x && x < this.x + 50 && y > this.y && y < this.y + 50) {
return true;
}
return false;
}
public void hit() {
health--;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public Image getImage() {
return image;
}
public int getHealth() {
return health;
}
}
private void update() {
player.move();
for (Bullet bullet : playerBullets) {
bullet.move(true);
}
for (Bullet bullet : enemyBullets) {
bullet.move(false);
}
enemyGenerateCount++;
if (enemyGenerateCount >= ENEMY_GENERATE_INTERVAL) {
enemies.add(new Enemy(WIDTH, (int) (Math.random() * (HEIGHT - 50)), enemyImage, ENEMY_SPEED, 1));
enemyGenerateCount = 0;
}
for (Enemy enemy : enemies) {
enemy.move();
if (enemy.shoot()) {
continue;
}
for (Bullet bullet : playerBullets) {
if (enemy.isHit(bullet.getX(), bullet.getY())) {
enemy.hit();
if (enemy.getHealth() == 0) {
enemies.remove(enemy);
score += SCORE_STEP;
}
playerBullets.remove(bullet);
break;
}
}
}
for (Bullet bullet : enemyBullets) {
if (player.isHit(bullet.getX(), bullet.getY())) {
player.hit();
enemyBullets.remove(bullet);
break;
}
}
for (Enemy enemy : enemies) {
if (player.isHit(enemy.getX() + 25, enemy.getY() + 50)) {
player.hit();
enemies.remove(enemy);
break;
}
}
}
@Override
public void start(Stage primaryStage) {
Group root = new Group();
Scene scene = new Scene(root, WIDTH, HEIGHT, Color.BLACK);
Canvas canvas = new Canvas(WIDTH, HEIGHT);
root.getChildren().add(canvas);
GraphicsContext gc = canvas.getGraphicsContext2D();
scene.setOnKeyPressed(event -> {
if (event.getCode() == KeyCode.UP) {
upPressed = true;
}
if (event.getCode() == KeyCode.DOWN) {
downPressed = true;
}
if (event.getCode() == KeyCode.LEFT) {
leftPressed = true;
}
if (event.getCode() == KeyCode.RIGHT) {
rightPressed = true;
}
if (event.getCode() == KeyCode.SPACE) {
player.shoot();
}
});
scene.setOnKeyReleased(event -> {
if (event.getCode() == KeyCode.UP) {
upPressed = false;
}
if (event.getCode() == KeyCode.DOWN) {
downPressed = false;
}
if (event.getCode() == KeyCode.LEFT) {
leftPressed = false;
}
if (event.getCode() == KeyCode.RIGHT) {
rightPressed = false;
}
});
new AnimationTimer() {
public void handle(long currentNanoTime) {
gc.clearRect(0, 0, WIDTH, HEIGHT);
update();
gc.drawImage(player.getImage(), player.getX(), player.getY());
for (Bullet bullet : playerBullets) {
gc.drawImage(bullet.getImage(), bullet.getX(), bullet.getY());
}
for (Bullet bullet : enemyBullets) {
gc.drawImage(bullet.getImage(), bullet.getX(), bullet.getY());
}
for (Enemy enemy : enemies) {
gc.drawImage(enemy.getImage(), enemy.getX(), enemy.getY());
}
gc.setFill(Color.WHITE);
gc.fillText("Score: " + score, 10, 20);
gc.fillText("Health: " + player.getHealth(), 10, 40);
if (player.getHealth() == 0) {
gc.setFill(Color.RED);
gc.fillText("Game Over", WIDTH / 2 - 50, HEIGHT / 2);
this.stop();
}
}
}.start();
primaryStage.setTitle("Plane War");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}这是一个基于JavaFX的游戏框架，实现了玩家飞机和敌机的移动、射击等基本功能。你可以在此基础上进行开发和完善。
