Added GL version/vendor to error report. (#207)

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/Container.java

@@ -68,6 +68,7 @@ public class Container extends AppGameContainer {
 	public void start() throws SlickException {
 		try {
 			setup();
+			ErrorHandler.setGlString();
 			getDelta();
 			while (running())
 				gameLoop();

src/itdelatrisu/opsu/ErrorHandler.java

@@ -33,6 +33,7 @@ import javax.swing.JScrollPane;
 import javax.swing.JTextArea;
 import javax.swing.UIManager;
 
+import org.lwjgl.opengl.GL11;
 import org.newdawn.slick.util.Log;
 import org.newdawn.slick.util.ResourceLoader;
 
@@ -73,9 +74,23 @@ public class ErrorHandler {
 		message  = { desc, scroll },
 		messageReport = { descReport, scroll };
 
+	/** OpenGL string (if any). */
+	private static String glString = null;
+
 	// This class should not be instantiated.
 	private ErrorHandler() {}
 
+	/**
+	 * Sets the OpenGL version string.
+	 */
+	public static void setGlString() {
+		try {
+			String glVersion = GL11.glGetString(GL11.GL_VERSION);
+			String glVendor = GL11.glGetString(GL11.GL_VENDOR);
+			glString = String.format("%s (%s)", glVersion, glVendor);
+		} catch (Exception e) {}
+	}
+
 	/**
 	 * Displays an error popup and logs the given error.
 	 * @param error a description of the error
@@ -197,6 +212,11 @@ public class ErrorHandler {
 		sb.append("**JRE:** ");
 		sb.append(System.getProperty("java.version"));
 		sb.append('\n');
+		if (glString != null) {
+			sb.append("**OpenGL Version:** ");
+			sb.append(glString);
+			sb.append('\n');
+		}
 		if (error != null) {
 			sb.append("**Error:** `");
 			sb.append(error);

src/itdelatrisu/opsu/Opsu.java

@@ -107,10 +107,13 @@ public class Opsu extends StateBasedGame {
 		} catch (FileNotFoundException e) {
 			Log.error(e);
 		}
+
+		// set default exception handler
 		Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
 			@Override
 			public void uncaughtException(Thread t, Throwable e) {
 				ErrorHandler.error("** Uncaught Exception! **", e, true);
+				System.exit(1);
 			}
 		});
 
@@ -123,15 +126,19 @@ public class Opsu extends StateBasedGame {
 		} catch (UnknownHostException e) {
 			// shouldn't happen
 		} catch (IOException e) {
-			ErrorHandler.error(String.format(
+			errorAndExit(
+				null,
+				String.format(
 					"opsu! could not be launched for one of these reasons:\n" +
 					"- An instance of opsu! is already running.\n" +
 					"- Another program is bound to port %d. " +
 					"You can change the port opsu! uses by editing the \"Port\" field in the configuration file.",
-					Options.getPort()), null, false);
-			System.exit(1);
+					Options.getPort()
+				)
+			);
 		}
 
+		// load natives
 		File nativeDir;
 		if (!Utils.isJarRunning() && (
 		    (nativeDir = new File("./target/natives/")).isDirectory() ||