未解决的 PlayN 编译问题三重播放

Question

我已经在这个项目上工作了几个月，本周我又回到了这个项目，似乎 PlayN 和 Tripleplay 的快照出现了一些问题，因为我知道

Exception in thread "AWT-EventQueue-0" java.lang.Error: Unresolved compilation problem: 
Cannot invoke fillRect(int, int, float, float) on the primitive type void

at tripleplay.ui.Background.createSolidLayer(Background.java:90)
at tripleplay.ui.bgs.SolidBackground.instantiate(SolidBackground.java:26)
at tripleplay.ui.Elements.layout(Elements.java:191)
at tripleplay.ui.Element.validate(Element.java:317)
at tripleplay.ui.Interface.paint(Interface.java:120)
at com.jengibre.h4ck1t.bouncer.Bouncer.paint(Bouncer.java:110)
at playn.java.JavaPlatform$1.paint(JavaPlatform.java:216)
at javax.swing.JComponent.paintChildren(JComponent.java:862)
at javax.swing.JComponent.paint(JComponent.java:1038)
at javax.swing.JComponent.paintChildren(JComponent.java:862)
at javax.swing.JComponent.paint(JComponent.java:1038)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:567)
at javax.swing.JComponent.paintChildren(JComponent.java:862)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5131)
at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:278)
at javax.swing.RepaintManager.paint(RepaintManager.java:1224)
at javax.swing.JComponent.paint(JComponent.java:1015)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97)
at java.awt.Container.paint(Container.java:1780)
at java.awt.Window.paint(Window.java:3375)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:796)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:713)
at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:693)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:125)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

这是我的元项目 pom.xml： http://pastebin.com/raw.php?i=qaMWx72C

这是我的java项目pom.xml： http://pastebin.com/raw.php?i=z3BF45yr

谢谢！

Answer 1

看起来您正在使用旧版本的 PlayN，它在 Surface/Canvas 上没有流畅的界面。

您可以在您的 core 子模块（在该目录中）中运行：

mvn dependency:tree

来查看正在使用哪些版本的 PlayN jar 文件来构建您的项目。以下是我的一款游戏的示例：

[INFO] --- maven-dependency-plugin:2.1:tree (default-cli) @ atlantis-core ---                                                   
[INFO] com.threerings.atlantis:atlantis-core:jar:1.0-SNAPSHOT                                                                   
[INFO] +- com.googlecode.playn:playn-core:jar:1.1-SNAPSHOT:compile                                                              
[INFO] +- com.threerings.nexus:nexus-core:jar:1.0-SNAPSHOT:compile                                                              
[INFO] |  \- com.threerings:react:jar:1.1:compile                                                                               
[INFO] +- com.threerings:tripleplay:jar:1.1-SNAPSHOT:compile                                                                    
[INFO] +- com.samskivert:pythagoras:jar:1.2-SNAPSHOT:compile                                                                    
[INFO] +- com.google.guava:guava:jar:10.0:compile                                                                               
[INFO] |  \- com.google.code.findbugs:jsr305:jar:1.3.9:compile                                                                  
[INFO] \- junit:junit:jar:4.8.1:test                                                                                            

如果您没有看到 playn-core:jar:1.0.1 或 1.0.2（或者 1.1-SNAPSHOT，如果您正在针对自己的 PlayN 版本进行构建），则说明有问题。您很可能可以通过将 playn-core 依赖项直接添加到您的 core/pom.xml 来解决上述问题。通常，您的顶级 pom.xml 将定义您在项目中使用的 PlayN 版本：

<properties>
  <playn.version>1.0.2</playn.version>
</properties>

然后您的 core/pom.xml 将利用该属性来声明 playn-core 依赖项：

<dependency>
  <groupId>com.googlecode.playn</groupId>
  <artifactId>playn-core</artifactId>
  <version>${playn.version}</version>
</dependency>