Java 小程序 - ArrayIndexOutOfBoundsException (pt 2)

Question

我解决了我之前的问题。但是现在在我的瓦片地图上...如果我尝试向右移动 9 个瓦片，并尝试到达第 9 个瓦片......我会收到此错误：

Exception in thread "AWT-EventQueue-1" java.lang.ArrayIndexOutOfBoundsException: 8
    at tileGen.blocked(tileGen.java:125)
    at tileGen.keyPressed(tileGen.java:58)
    at java.awt.Component.processKeyEvent(Component.java:6221)
    at java.awt.Component.processEvent(Component.java:6040)
    at java.awt.Container.processEvent(Container.java:2041)
    at java.awt.Component.dispatchEventImpl(Component.java:4630)
    at java.awt.Container.dispatchEventImpl(Container.java:2099)
    at java.awt.Component.dispatchEvent(Component.java:4460)
    at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1850)
    at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:712)
    at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:990)
    at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:855)
    at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:676)
    at java.awt.Component.dispatchEventImpl(Component.java:4502)
    at java.awt.Container.dispatchEventImpl(Container.java:2099)
    at java.awt.Component.dispatchEvent(Component.java:4460)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    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)

这里是代码：http://www.so.pastebin.com/hYkpQf13

我尝试了很多解决方案，但都失败了。

Answer 1

我认为问题在于您混淆了坐标。你使用 X 作为 left-right 坐标和 Y 作为 up-down，当它应该是相反的时候（或者你应该镜像你的板）。 p>

向右移动时，您增加 X，在您的板上，这意味着您有效地移动了一行向下。由于棋盘有 8 行，第 9 步将带您出界。