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android游戏开发框架libgdx的使用（十九）—使用自定义配置改进AVG游戏开发
先说明一下上一篇文章我使用了多张hiero图的字体绘制，因为我对源码进行了一些修改，本来想这次发出来的，但是我仔细调试了一下，发现对于多图的支持还是有问题，有些字会出现偏移。
这个只有继续尝试了…大家可以考虑使用ttf字库。
然后继续说上一篇，虽然实现了一个简单的效果，但是目前有很多不足。我把AVG游戏需要的资源全部提取出来，放在一个个文件夹中，然后通过配置文件加载这些数据。
libgdx的工具库
com.badlogic.gdx.utils就是libgdx的工具库，支持两种格式xml和json。
我最先倾向于使用json格式，但是反复想了想，虽然json的大小可能要小点，但是没有xml直观好读。
所以还是选择使用xml格式，读取xml文件使用XmlReader。- XmlReader reader=new XmlReader(); try { Element config=reader.parse(Gdx.files.internal("data/config.xml")); config.get("name"); //获取属性值，如果没有属性值则返回同名child的值 config.getAttribute("name"); //获取属性值 } catch (IOException e) { e.printStackTrace(); } 复制代码
配置文件需要配置的内容其实就是上一篇我们硬编码进去的东西，有背景、边框、对话等。
我设计的比较随意，不一定是最好的，大家可以参考参考。- <?xml version="1.0" encoding="UTF-8"?> <scene> <packfile>pack</packfile> <background>bg1</background> <border> <border-name>border</border-name> <border-left>26</border-left> <border-right>26</border-right> <border-top>31</border-top> <border-bottom>31</border-bottom> </border> <dialogues> <dialogue> <name>人物1</name> <data>这是对话1</data> </dialogue> <dialogue> <name>人物1</name> <data>这是对话2</data> </dialogue> </dialogues> </scene>复制代码
这里还有一个地方需要注意，如果我们需要切换场景怎么办？切换的场景可能是一个AVG场景，也可能是个一般的Screen。我本来想做个简单的IOC容器的，但后来想想也没有那么复杂。
在配置文件中加上一句
如果是一般Screen就是
<nextscreen type="standard">com.cnblogs.htynkn.screen.GameOver</nextscreen>如果是AVG场景就是
<nextscreen type="avg">data/scene2/config.xml</nextscreen>使用libgdx实现相关效果
其实整个原理和上一篇原理是一样的，唯一多的一个就是解析配置文件和场景跳转。- XmlReader xmlReader = new XmlReader(); try { Element config = xmlReader.parse(Gdx.files .internal(this.configFileName)); //加载配置文件 atlas = new TextureAtlas(Gdx.files.internal(configFileName) .parent() + "/" + config.get("packfile")); //获取pack配置文件 background = atlas.findRegion(config.get("background")); //创建背景图 Element borderConfig = config.getChildByName("border"); //获取border配置 border = new NinePatch(atlas.findRegion(borderConfig.getChild(0) .getText()), Integer.parseInt(borderConfig.getChild(1) .getText()), Integer.parseInt(borderConfig.getChild(2) .getText()), Integer.parseInt(borderConfig.getChild(3) .getText()), Integer.parseInt(borderConfig.getChild(4) .getText())); //实例化border dialogues = new ArrayList<String[]>(); Element dialoguesConfig = config.getChildByName("dialogues"); //开始处理对话 for (int i = 0; i < dialoguesConfig.getChildCount(); i++) { dialogues.add(new String[] { dialoguesConfig.getChild(i).get("name"), dialoguesConfig.getChild(i).get("data") }); } Element screenConfig = config.getChildByName("nextscreen"); //处理场景 if (screenConfig.getAttribute("type").equals("avg")) { nextScreen = new AVGScreen(this.game, screenConfig.getText()); } else { try { nextScreen = (Screen) Class.forName(screenConfig.getText()) .newInstance(); } catch (Exception e) { e.printStackTrace(); } }} catch (IOException e) { e.printStackTrace(); }复制代码
- borderImage.setClickListener(new ClickListener() { @Override public void click(Actor actor, float x, float y) { if (currentSize < dialogues.size() - 1) { currentSize++; } else { if (nextScreen != null) { game.setScreen(nextScreen); } } } }); 复制代码
- package com.cnblogs.htynkn.ui;import java.io.IOException; import java.util.ArrayList; import java.util.List;import com.badlogic.gdx.Game; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.Screen; import com.badlogic.gdx.graphics.Color; import com.badlogic.gdx.graphics.GL10; import com.badlogic.gdx.graphics.Texture; import com.badlogic.gdx.graphics.g2d.BitmapFont; import com.badlogic.gdx.graphics.g2d.NinePatch; import com.badlogic.gdx.graphics.g2d.TextureAtlas; import com.badlogic.gdx.graphics.g2d.TextureRegion; import com.badlogic.gdx.scenes.scene2d.Actor; import com.badlogic.gdx.scenes.scene2d.Stage; import com.badlogic.gdx.scenes.scene2d.ui.ClickListener; import com.badlogic.gdx.scenes.scene2d.ui.Image; import com.badlogic.gdx.scenes.scene2d.ui.Label; import com.badlogic.gdx.scenes.scene2d.ui.Label.LabelStyle; import com.badlogic.gdx.utils.Array; import com.badlogic.gdx.utils.XmlReader; import com.badlogic.gdx.utils.XmlReader.Element;public class AVGScreen implements Screen { private String configFileName; private Stage stage; // 舞台 private List<String[]> dialogues; // 对话 private BitmapFont bitmapFont; // 文字 private NinePatch border; // 边框 private int currentSize; // 当前对话序号 private TextureAtlas atlas; private TextureRegion background; private Screen nextScreen; private Game game; public AVGScreen(Game game, String configFileName) { this.game = game; bitmapFont = new BitmapFont(Gdx.files.internal("font/chinese.fnt"), false); this.configFileName = configFileName; XmlReader xmlReader = new XmlReader(); try { Element config = xmlReader.parse(Gdx.files .internal(this.configFileName)); atlas = new TextureAtlas(Gdx.files.internal(configFileName) .parent() + "/" + config.get("packfile")); background = atlas.findRegion(config.get("background")); Element borderConfig = config.getChildByName("border"); border = new NinePatch(atlas.findRegion(borderConfig.getChild(0) .getText()), Integer.parseInt(borderConfig.getChild(1) .getText()), Integer.parseInt(borderConfig.getChild(2) .getText()), Integer.parseInt(borderConfig.getChild(3) .getText()), Integer.parseInt(borderConfig.getChild(4) .getText())); dialogues = new ArrayList<String[]>(); Element dialoguesConfig = config.getChildByName("dialogues"); for (int i = 0; i < dialoguesConfig.getChildCount(); i++) { dialogues.add(new String[] { dialoguesConfig.getChild(i).get("name"), dialoguesConfig.getChild(i).get("data") }); } Element screenConfig = config.getChildByName("nextscreen"); if (screenConfig.getAttribute("type").equals("avg")) { nextScreen = new AVGScreen(this.game, screenConfig.getText()); } else { try { nextScreen = (Screen) Class.forName(screenConfig.getText()) .newInstance(); } catch (Exception e) { e.printStackTrace(); } } } catch (IOException e) { e.printStackTrace(); } } @Override public void dispose() { bitmapFont.dispose(); stage.dispose(); } @Override public void hide() { // TODO Auto-generated method stub } @Override public void pause() { // TODO Auto-generated method stub } @Override public void render(float delta) { Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); ((Label) stage.findActor("label")) .setText(dialogues.get(currentSize)[0] + " : " + dialogues.get(currentSize)[1]); stage.act(Gdx.graphics.getDeltaTime()); stage.draw(); } @Override public void resize(int width, int height) { // TODO Auto-generated method stub } @Override public void resume() { // TODO Auto-generated method stub } @Override public void show() { currentSize = 0; stage = new Stage(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), false); Image backgroundImage = new Image(background); backgroundImage.x = backgroundImage.y = 0; backgroundImage.setFillParent(true); Image borderImage = new Image(border); borderImage.x = borderImage.y = 0; borderImage.width = Gdx.graphics.getWidth(); borderImage.height = Gdx.graphics.getHeight() / 4; borderImage.setClickListener(new ClickListener() { @Override public void click(Actor actor, float x, float y) { if (currentSize < dialogues.size() - 1) { currentSize++; } else { if (nextScreen != null) { game.setScreen(nextScreen); } } } }); LabelStyle labelStyle = new LabelStyle(bitmapFont, Color.WHITE); Label label = new Label("", labelStyle, "label"); label.x = border.getLeftWidth() + 10; label.y = borderImage.height - border.getTopHeight() - 10; stage.addActor(backgroundImage); stage.addActor(borderImage); stage.addActor(label); Gdx.input.setInputProcessor(stage); } } 复制代码
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免费注册
发表于 2012-03-04 14:53
