Java究竟怎么玩？

JavaFx

Silverlight

作者的話：

開誠布公的說，我對于JavaFX沒有什么好印象，我想這可能是以下原因造成的：

1、沒有任何UI編輯工具，我總要與腳本打交道。如果只能用編碼方式進行開發(fā)，那可就一點也不好玩了。

2、應用程序老是需要花費很長時間才能加載成功，我不知道為什么會這樣，總之每次在IE中啟動程序，都要過一小段才能顯示出內(nèi)容。

3、以JavaFX運行程序，不但需要.jar文件，還要去配置.jnlp。

4、我不知道哪些屬性可以與特定對象相關聯(lián)。

5、有些時候，調(diào)試器無法獲得正確的錯誤位置。

6、JavaFx是一種全新的腳本，學習它需要很長時間。

7、當滾動頁面時，JavaFX中可能會出現(xiàn)殘像。

實際上，除此之外我還有一些不好的體驗，就不一一列舉了。

可能有人會說，JavaFX是一個相對較新的技術，這些都是很平常的問題，你需要耐心等待。我同意這一點，因此我將等待JavaFX的后續(xù)發(fā)展，然后再花時間學習它。

我還記得，Silverlight在它的第一版中也沒什么吸引力。那么，JavaFX下面會怎么樣呢？

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另外，筆者自己再補充個LGame-Simple的實現(xiàn)：

package org.loon.test; import java.awt.Color; import java.awt.Graphics2D; import java.awt.Image; import java.awt.event.KeyEvent; import java.awt.event.MouseEvent; import java.awt.geom.AffineTransform; import org.loon.framework.game.simple.GameScene; import org.loon.framework.game.simple.core.Deploy; import org.loon.framework.game.simple.core.LSystem; import org.loon.framework.game.simple.core.LTimerContext; import org.loon.framework.game.simple.core.Screen; import org.loon.framework.game.simple.utils.GraphicsUtils; /** * Copyright 2008 - 2009 * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. * * @project loonframework * @author chenpeng * @email：ceponline@yahoo.com.cn * @version 0.1 */ public class FPS extends Screen { private final static int ycenter = 90; private final static int xcenter = 220; private final static double shift = Math.PI / 2; private double image_gap = Math.PI; private double angle; private double angle_rad = angle * Math.PI / 180; private int total; class Carousel { double x, y, scale; int width, height; Image image; public Carousel(String fileName) { this.image = GraphicsUtils.loadImage(fileName); this.width = image.getWidth(null); this.height = image.getHeight(null); } public void draw(Graphics2D g) { AffineTransform transform = new AffineTransform(); transform.translate(x, y); transform.scale(scale, scale); g.drawImage(image, transform, null); } public void update(double i, double angle) { scale = 0.8 + 0.5 * Math.sin(angle + i * image_gap + shift); x = Math.cos(angle + i * image_gap + shift) * xcenter + xcenter; y = Math.sin(angle + i * image_gap + shift) * ycenter + ycenter; } } private Carousel[] carousels = new Carousel[0]; public void alter(LTimerContext timer) { angle_rad = angle_rad + Math.PI / 60; for (int i = 0; i < total; i++) { carousels[i].update(i, angle_rad); } } public synchronized void addCarousel() { int index = total % 6; if (total == carousels.length) { carousels = (Carousel[]) LSystem.expand(carousels, (total + 1) * 5); } carousels[total++] = new Carousel("images/image" + index + ".png"); image_gap = Math.PI * 2 / total; } public void draw(Graphics2D g) { g.setColor(Color.white); g.drawString(("圖片總數(shù):" + total).intern(), 15, getHeight() - 25); for (int i = 0; i < total; i++) { carousels[i].draw(g); } } public void leftClick(MouseEvent e) { addCarousel(); } public void middleClick(MouseEvent e) { } public void rightClick(MouseEvent e) { } public void onKey(KeyEvent e) { } public void onKeyUp(KeyEvent e) { } public static void main(String[] args) { GameScene frame = new GameScene("LGame-Simple-FPS測試", 550, 400); Deploy deploy = frame.getDeploy(); deploy.setScreen(new FPS()); deploy.setShowFPS(true); deploy.setLogo(false); deploy.setFPS(100); deploy.mainLoop(); frame.showFrame(); } }