我编写了一个简单的纸牌游戏（使用IntelliJ 3.3），该游戏每秒更新gui并包含游戏中的许多节点，这些节点用于显示游戏事件和动画。尝试过该游戏的人说，他们的系统速度变慢，内存和cpu使用率上升（当我从朋友的一个屏幕上看到它使用了约1.4 GB内存时，我感到震惊）
我检查了一些与javaFX内存使用问题有关的问题，但与我的问题无关。在一篇文章中，我读到在JavaFX游戏中使用多个节点可能会导致较高的内存使用率。
在短时间内运行：
最小内存使用量约为100-250 MB
最大内存使用量约为800-1200 MB
平均内存使用量约为500-700 MB
重要提示：
一个没有FX ID的10X10网格中有100个按钮
在gameButtonClicked的匹配项中找到button.indexOf（event.getSource（））
导入：
导入javafx.application.Application;
导入javafx.application.Platform;
导入javafx.fxml.FXMLLoader;
导入javafx.scene.Parent;
导入javafx.scene.Scene;
导入javafx.scene.media.Media;
导入javafx.scene.media.MediaPlayer;
导入javafx.stage.Stage;
导入javafx.util.Duration;
导入java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
导入java.util.HashMap;
import java.util.Random;
import java.util.concurrent.atomic.AtomicLong;
public class Main extends Application {
static boolean isMuted;
static Stage window;
static MediaPlayer mediaPlayerBGM;
static MediaPlayer mediaPlayerSFX;
private static HashMap<String, Media> sounds;
private static ArrayList<Long> usage;
private final String[] SOUND_LIST = {"bgm_credits.mp3", "bgm_game.mp3", "bgm_game_1.mp3", "bgm_game_2.mp3", "bgm_game_3.mp3",
"bgm_how_to.mp3", "bgm_menu.mp3", "bgm_victory.mp3", "sfx_button_clicked.wav",
"sfx_card_unfold.wav", "sfx_toggle.wav"
};
public static void main(String[] args) {
launch(args);
AtomicLong sum = new AtomicLong();
usage.forEach(sum::addAndGet);
long average = sum.get() / usage.size();
System.out.printf("minimum usage: %d, maximum usage: %d, average usage: %d",
Collections.min(usage), Collections.max(usage), average);
}
static void playBGM(String key) {
mediaPlayerBGM.stop();
mediaPlayerBGM.setStartTime(Duration.ZERO);
if (key.equals("bgm_game")) {
String[] suffix = {"", "_1", "_2", "_3"};
Random random = new Random();
mediaPlayerBGM = new MediaPlayer(sounds.get(key + suffix[random.nextInt(4)]));
} else {
mediaPlayerBGM = new MediaPlayer(sounds.get(key));
}
mediaPlayerBGM.setCycleCount(MediaPlayer.INDEFINITE);
if (isMuted) {
mediaPlayerBGM.setVolume(0.0);
}
mediaPlayerBGM.play();
}
static void playSFX(String key) {
if (mediaPlayerSFX != null) {
mediaPlayerSFX.stop();
}
mediaPlayerSFX = new MediaPlayer(sounds.get(key));
if (isMuted) {
mediaPlayerSFX.setVolume(0.0);
}
mediaPlayerSFX.play();
}
@Override
public void start(Stage primaryStage) throws Exception {
sounds = new HashMap<>();
usage = new ArrayList<>();
isMuted = false;
for (String soundName :
SOUND_LIST) {
URL resource = getClass().getResource("/" + soundName);
System.out.println(soundName);
System.out.println(resource.toString());
sounds.put(soundName.substring(0, soundName.lastIndexOf('.')), new Media(resource.toString()));
}
mediaPlayerBGM = new MediaPlayer(sounds.get("bgm_menu"));
mediaPlayerBGM.setCycleCount(MediaPlayer.INDEFINITE);
mediaPlayerBGM.play();
window = primaryStage;
Parent root = FXMLLoader.load(getClass().getResource("menu.fxml"));
// long running operation runs on different thread
Thread thread = new Thread(() -> {
Runnable updater = () -> {
if (!Game.isGameIsOver() && Game.getScore() != 0 && window.getTitle().equals("The Main Pick") &&
Game.firstClickHappened()) {
Game.scoreCalculator();
}
};
while (true) {
try {
usage.add(Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory());
System.out.printf("Used memory: %d\n", Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory());
Thread.sleep(1000);
} catch (InterruptedException ex) {
System.out.println("Interrupted");
}
// UI update is run on the Application thread
Platform.runLater(updater);
}
});
// don't let thread prevent JVM shutdown
thread.setDaemon(true);
thread.start();
window.setTitle("Main Menu");
window.setScene(new Scene(root, 600, 600));
window.setResizable(false);
window.show();
}
}
导入：
打包com.sample;
import javafx.animation.FadeTransition;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
导入javafx.fxml.FXML;
导入javafx.fxml.FXMLLoader;
importjavafx.scene.Node;
import javafx.scene.Parent;
导入javafx.scene.Scene;
导入javafx.scene.control.Button;
导入javafx.scene.control.Label;
导入javafx.scene.control.RadioButton;
导入javafx.scene.layout.GridPane;
导入javafx.util.Duration;
import java.io.IOException;
public class Controller
{
@FXML
public RadioButton musicOnOff;
@FXML
public Button newGame;
@FXML
public Button howTo;
@FXML
public Button credits;
@FXML
public Button exit;
@FXML
public Button menu;
@FXML
public GridPane pane;
@FXML
public Label score;
@FXML
public Label time;
@FXML
public Label tries;
private boolean animating;
public void initialize() {
if (score != null && time != null && tries != null) {
score.textProperty().bind(Game.scoreProperty);
time.textProperty().bind(Game.timeProperty);
tries.textProperty().bind(Game.triesProperty);
animating=false;
}
if (musicOnOff!=null){
if(Main.isMuted){
musicOnOff.setSelected(true);
}
}
}
public void newGameButtonClicked() {
try {
Main.playSFX("sfx_button_clicked");
new Game();
Main.window.hide();
Main.window.setScene(getScene("game"));
Main.window.setTitle("The Main Pick");
Main.window.setMaximized(true);
Main.playBGM("bgm_game");
Main.window.show();
} catch (IOException e) {
System.out.println("could not change the scene to: game");
}
}
public void menuButtonClicked() {
try {
Main.playSFX("sfx_button_clicked");
Main.playBGM("bgm_menu");
if (Main.window.getTitle().equals("The Main Pick")) {
Main.window.hide();
Game.setGameOver();
Main.window.setScene(getScene("menu"));
Main.window.setMaximized(false);
Main.window.show();
} else {
Main.window.setScene(getScene("menu"));
}
Main.window.setTitle("Main Menu");
} catch (IOException e) {
System.out.println("could not change the scene to: game");
}
}
public void gameButtonClicked(ActionEvent event) {
ObservableList<Node> buttons = pane.getChildren();
int index = buttons.indexOf(event.getSource());
int column = index % 10;
int row = (index - index % 10) / 10;
if (!((Button) event.getSource()).getStyleClass().toString().equals("button button-treasure") &&
!((Button) event.getSource()).getStyleClass().toString().equals("button button-uncovered"))
{
FadeTransition transition = new FadeTransition();
transition.setNode((Button) event.getSource());
transition.setDuration(new Duration(500));
transition.setFromValue(1.0);
transition.setToValue(0.0);
transition.setCycleCount(1);
transition.setOnFinished(actionEvent -> {
if (((Button) event.getSource()).getStyleClass().toString().equals("button button-treasure")) {
loadVictoryScene();
}
if (!((Button) event.getSource()).getStyleClass().toString().equals("button button-treasure") &&
!((Button) event.getSource()).getStyleClass().toString().equals("button button-uncovered"))
{
transition.setFromValue(0.0);
transition.setToValue(1.0);
System.out.println(((Button) event.getSource()).getStyleClass().toString());
((Button) event.getSource()).getStyleClass().remove("button-covered");
((Button) event.getSource()).getStyleClass().add(Game.click(row, column));
transition.play();
transition.setOnFinished(ActionEvent->animating=false);
}
});
System.out.println(animating);
if(!animating){
animating=true;
transition.play();
Main.playSFX("sfx_card_unfold");}
}
System.out.printf("button index:%d,row:%d,column:%d\n", index, row, column);
}
public void howToPlayButtonClicked() {
try {
Main.playSFX("sfx_button_clicked");
Main.playBGM("bgm_how_to");
Main.window.setScene(getScene("howTo"));
Main.window.setTitle("How to Play");
} catch (IOException e) {
System.out.println("could not change the scene to: how to play");
}
}
public void creditsButtonClicked() {
try {
Main.playSFX("sfx_button_clicked");
Main.playBGM("bgm_credits");
Main.window.setScene(getScene("credits"));
Main.window.setTitle("Credits");
} catch (IOException e) {
System.out.println("could not change the scene to: credits");
}
}
public void exitButtonClicked() {
Main.playSFX("sfx_button_clicked");
Main.window.close();
}
public void musicOnOffRadioButtonChecked() {
Main.playSFX("sfx_toggle");
if (musicOnOff.isSelected()) {
Main.isMuted=true;
Main.mediaPlayerBGM.setVolume(0.0);
Main.mediaPlayerSFX.setVolume(0.0);
System.out.println("now selected");
} else {
Main.isMuted=false;
Main.mediaPlayerBGM.setVolume(1.0);
Main.mediaPlayerSFX.setVolume(1.0);
System.out.println("unselected");
}
}
private void loadVictoryScene() {
try {
Main.window.hide();
Main.playBGM("bgm_victory");
Main.window.setScene(getScene("victory"));
Main.window.setTitle("Victory");
Main.window.setMaximized(false);
Main.window.show();
} catch (IOException e) {
System.out.println("could not change the scene to: victory");
}
}
private Scene getScene(String name) throws IOException {
Parent root = FXMLLoader.load(getClass().getResource(name + ".fxml"));
if (name.equals("game")) {
return new Scene(root, 800, 800);
}
return new Scene(root, 600, 600);
}
}
导入：
打包com.sample;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import java.util.Random;
public class Game {
static StringProperty scoreProperty;
static StringProperty timeProperty;
static StringProperty triesProperty;
private static int time;
private static int score;
private static int tries;
private static int[][] tiles;
private static boolean gameIsOver;
private static boolean firstClick;
public Game() {
System.out.println("Game created...");
tries = 0;
score = 100000;
time = 0;
gameIsOver = false;
firstClick = false;
scoreProperty = new SimpleStringProperty("" + score);
timeProperty = new SimpleStringProperty("0");
triesProperty = new SimpleStringProperty("0");
tiles = new int[10][10];
Random random = new Random();
int treasureColumn = random.nextInt(10);
int treasureRow = random.nextInt(10);
tiles[treasureRow][treasureColumn] = 1;
}
static boolean firstClickHappened() {
return firstClick;
}
static void setGameOver() {
gameIsOver = true;
}
static boolean isGameIsOver() {
return gameIsOver;
}
static int getScore() {
return score;
}
static void scoreCalculator() {
time++;
if (time < 10) {
score = score - 100;
} else if (time < 20) {
score = score - 200;
} else if (time < 30) {
score = score - 300;
} else if (time < 50) {
score = score - 500;
} else {
score = score - 1000;
}
if (score < 0) {
score = 0;
}
scoreProperty.setValue("" + score);
timeProperty.setValue("" + time);
triesProperty.setValue("" + tries);
System.out.printf("Score:%s,Time:%s,Tries%s\n", scoreProperty.getValue(), timeProperty.getValue(), triesProperty.getValue());
}
static String click(int row, int column) {
if (!firstClickHappened()) firstClick = true;
System.out.println(row + "," + column);
int clickValue = tiles[row][column];
System.out.println(clickValue);
if (clickValue == 0) {
tries++;
score -= 1000;
} else {
setGameOver();
}
return (clickValue == 1) ? "button-treasure" : "button-uncovered";
}
}