С текущей версией API у меня меньше 175 LOC для Space Invaders. В моих API есть много «Функциональных интерфейсов», которые можно преобразовать в лямбда-выражения с помощью JavaFX 8 (например, SpriteProvider и CollisionHandler). Это сделает код лучше и короче. Возможно, я мог бы также уменьшить количество строк, связав ресурсы (например, TileSets) и создав больше фабрик и сборщиков (SpriteBuilder). Но я все ближе к тому, что хочу …
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package de.eppleton.fx2d.samples.spaceinvaders;import de.eppleton.fx2d.collision.*;import de.eppleton.fx2d.*;import de.eppleton.fx2d.action.*;import de.eppleton.fx2d.tileengine.*;import java.util.Collection;import java.util.logging.*;import javafx.beans.property.DoubleProperty;import javafx.beans.property.SimpleDoubleProperty;import javafx.scene.canvas.*;import javafx.scene.input.*;import javafx.scene.media.*;import javafx.scene.paint.Color;import javafx.scene.text.Font;import javax.xml.bind.JAXBException;import org.openide.util.Lookup;import org.openide.util.lookup.Lookups;public class SpaceInvaders extends Game { Points TEN = new Points(10); Points TWENTY = new Points(30); Points THIRTY = new Points(40); DoubleProperty invaderXVelocity = new SimpleDoubleProperty(0.3); AudioClip shootSound = new AudioClip(SpaceInvaders.class.getResource('/assets/sound/shoot.wav').toString()); AudioClip invaderKilledSound = new AudioClip(SpaceInvaders.class.getResource('/assets/sound/invaderkilled.wav').toString()); MediaPlayer mediaPlayer = new MediaPlayer(new Media(SpaceInvaders.class.getResource('/assets/sound/invader_loop1.mp3').toString())); int score = 0; String message; int[][] enemies = new int[][]{ {30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30}, {20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20}, {20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20}, {10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10}, {10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10} }; @Override protected void initGame() { final GameCanvas canvas = getCanvas(); try { TileSet invaders = TileMapReader.readSet('/assets/graphics/invaders1.tsx'); TileSet playerTiles = TileMapReader.readSet('/assets/graphics/player.tsx'); final TileSetAnimation animation30 = new TileSetAnimation(invaders, new int[]{0, 1}, 2); final TileSetAnimation animation10 = new TileSetAnimation(invaders, new int[]{4, 5}, 2); final TileSetAnimation animation20 = new TileSetAnimation(invaders, new int[]{2, 3}, 2); final TileSetAnimation playerAnimation = new TileSetAnimation(playerTiles, new int[]{0}, 100_000); for (int i = 0; i < enemies.length; i++) { int[] is = enemies[i]; for (int j = 0; j < is.length; j++) { Points points = is[j] == 30 ? THIRTY : is[j] == 20 ? TWENTY : TEN; Sprite sprite = new Sprite(canvas, '' + ((j * 11) + i), 50 + (40 * j), 140 + (40 * i), 30, 20, Lookups.fixed(points)); sprite.setAnimation(is[j] == 30 ? animation30 : is[j] == 20 ? animation20 : animation10); sprite.setVelocityXProperty(invaderXVelocity); } } Sprite player = new Sprite(canvas, playerAnimation, 'Player', 350, 620, 40, 30, Lookup.EMPTY); player.setAnimation(playerAnimation); player.addAction(KeyCode.LEFT, ActionFactory.createMoveAction(playerAnimation, 'left', -4, 0, 0, 0)); player.addAction(KeyCode.RIGHT, ActionFactory.createMoveAction(playerAnimation, 'right', 4, 0, 0, 0)); player.addAction(KeyCode.UP, new ShootAction(playerAnimation, 'fire', new BulletProvider(), new HitHandler(), shootSound)); } catch (JAXBException ex) { Logger.getLogger(SpaceInvaders.class.getName()).log(Level.SEVERE, null, ex); } canvas.addLayer(new Background()); canvas.addBehaviour(new MoveInvadersBehavior()); mediaPlayer.setCycleCount(MediaPlayer.INDEFINITE); mediaPlayer.play(); canvas.addLayer(new SpriteLayer()); canvas.start(); } @Override protected double getViewPortWidth() { return 700; } @Override protected double getViewPortHeight() { return 700; } public static void main(String[] args) { launch(args); } private class Points { int points; public Points(int points) { this.points = points; } public int getPoints() { return points; } } static class BulletProvider implements SpriteProvider { @Override public Sprite getSprite(GameCanvas parent, double x, double y) { return new Sprite(parent, 'bullet', x, y + 10, 10, 20, Lookup.EMPTY); } } class HitHandler implements CollisionHandler { @Override public void handleCollision(Collision collision) { Points points = collision.getSpriteTwo().getLookup().lookup(Points.class); if (points != null) { score += points.getPoints(); invaderKilledSound.play(); collision.getSpriteOne().remove(); collision.getSpriteTwo().remove(); } } } class MoveInvadersBehavior extends Behavior { @Override public boolean perform(GameCanvas canvas, long nanos) { Collection<Sprite> sprites = canvas.getSprites(); boolean stop = false; boolean win = true; for (Sprite sprite1 : sprites) { if (sprite1.getLookup().lookup(Points.class) != null) { win = false; if (sprite1.getX() > 650 || sprite1.getX() < 50) { invaderXVelocity.set(-invaderXVelocity.doubleValue() * (stop ? 0 : 1.3)); if (sprite1.getY() >= 600) { message = 'Game Over!'; stop = true; mediaPlayer.stop(); } for (Sprite sprite2 : sprites) { if (sprite2.getLookup().lookup(Points.class) != null) { sprite2.setY(sprite2.getY() + (stop ? 0 : 20)); } } break; } } } if (win) { message = 'You win!'; canvas.stop(); mediaPlayer.stop(); } return true; } } class Background extends Layer { @Override public void draw(GraphicsContext graphicsContext, double x, double y, double width, double height) { graphicsContext.setFill(Color.BLACK); graphicsContext.fillRect(0, 0, width, height); graphicsContext.setFill(Color.WHITE); graphicsContext.setFont(Font.font('OCR A Std', 20)); graphicsContext.fillText('SCORE<1> HI-SCORE SCORE<2>', 30, 30); graphicsContext.fillText('' + score + ' 9990 ', 30, 60); graphicsContext.fillText(message, 300, 400); graphicsContext.fillText('' + 3 + ' CREDIT ' + 1, 30, 680); graphicsContext.setFill(Color.GREEN); graphicsContext.fillRect(30, 650, 640, 4); } }} |
Вот видео игры:
Ссылка: JavaFX: Space Invaders менее чем за 175 LOC от нашего партнера JCG Тони Эппла в блоге Eppleton .