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-rw-r--r--launcher/MultiMCLauncher.java331
1 files changed, 331 insertions, 0 deletions
diff --git a/launcher/MultiMCLauncher.java b/launcher/MultiMCLauncher.java
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+//
+// Copyright 2012 MultiMC Contributors
+//
+// 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.
+//
+
+import java.applet.Applet;
+import java.awt.Dimension;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Modifier;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipException;
+import java.util.zip.ZipFile;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import org.simplericity.macify.eawt.Application;
+import org.simplericity.macify.eawt.DefaultApplication;
+
+public class MultiMCLauncher
+{
+ /**
+ * @param args
+ * The arguments you want to launch Minecraft with. New path,
+ * Username, Session ID.
+ */
+ public static void main(String[] args)
+ {
+ if (args.length < 3)
+ {
+ System.out.println("Not enough arguments.");
+ System.exit(-1);
+ }
+
+ // Set the OSX application icon first, if we are on OSX.
+ Application application = new DefaultApplication();
+ if(application.isMac())
+ {
+ try
+ {
+ BufferedImage image = ImageIO.read(new File("icon.png"));
+ application.setApplicationIconImage(image);
+ }
+ catch (IOException e)
+ {
+ e.printStackTrace();
+ }
+ }
+
+ String userName = args[0];
+ String sessionId = args[1];
+ String windowtitle = args[2];
+ String windowParams = args[3];
+ String lwjgl = args[4];
+ String cwd = System.getProperty("user.dir");
+
+ Dimension winSize = new Dimension(854, 480);
+ boolean maximize = false;
+ boolean compatMode = false;
+
+
+ String[] dimStrings = windowParams.split("x");
+
+ if (windowParams.equalsIgnoreCase("compatmode"))
+ {
+ compatMode = true;
+ }
+ else if (windowParams.equalsIgnoreCase("max"))
+ {
+ maximize = true;
+ }
+ else if (dimStrings.length == 2)
+ {
+ try
+ {
+ winSize = new Dimension(Integer.parseInt(dimStrings[0]),
+ Integer.parseInt(dimStrings[1]));
+ }
+ catch (NumberFormatException e)
+ {
+ System.out.println("Invalid Window size argument, " +
+ "using default.");
+ }
+ }
+ else
+ {
+ System.out.println("Invalid Window size argument, " +
+ "using default.");
+ }
+
+ try
+ {
+ File binDir = new File(cwd, "bin");
+ File lwjglDir;
+ if(lwjgl.equalsIgnoreCase("Mojang"))
+ lwjglDir = binDir;
+ else
+ lwjglDir = new File(lwjgl);
+
+ System.out.println("Loading jars...");
+ String[] lwjglJars = new String[] {
+ "lwjgl.jar", "lwjgl_util.jar", "jinput.jar"
+ };
+
+ URL[] urls = new URL[4];
+ try
+ {
+ File f = new File(binDir, "minecraft.jar");
+ urls[0] = f.toURI().toURL();
+ System.out.println("Loading URL: " + urls[0].toString());
+
+ for (int i = 1; i < urls.length; i++)
+ {
+ File jar = new File(lwjglDir, lwjglJars[i-1]);
+ urls[i] = jar.toURI().toURL();
+ System.out.println("Loading URL: " + urls[i].toString());
+ }
+ }
+ catch (MalformedURLException e)
+ {
+ System.err.println("MalformedURLException, " + e.toString());
+ System.exit(5);
+ }
+
+ System.out.println("Loading natives...");
+ String nativesDir = new File(lwjglDir, "natives").toString();
+
+ System.setProperty("org.lwjgl.librarypath", nativesDir);
+ System.setProperty("net.java.games.input.librarypath", nativesDir);
+
+ URLClassLoader cl =
+ new URLClassLoader(urls, MultiMCLauncher.class.getClassLoader());
+
+ // Get the Minecraft Class.
+ Class<?> mc = null;
+ try
+ {
+ mc = cl.loadClass("net.minecraft.client.Minecraft");
+
+ Field f = getMCPathField(mc);
+
+ if (f == null)
+ {
+ System.err.println("Could not find Minecraft path field. Launch failed.");
+ System.exit(-1);
+ }
+
+ f.setAccessible(true);
+ f.set(null, new File(cwd));
+ // And set it.
+ System.out.println("Fixed Minecraft Path: Field was " + f.toString());
+ }
+ catch (ClassNotFoundException e)
+ {
+ System.err.println("Can't find main class. Searching...");
+
+ // Look for any class that looks like the main class.
+ File mcJar = new File(new File(cwd, "bin"), "minecraft.jar");
+ ZipFile zip = null;
+ try
+ {
+ zip = new ZipFile(mcJar);
+ } catch (ZipException e1)
+ {
+ e1.printStackTrace();
+ System.err.println("Search failed.");
+ System.exit(-1);
+ } catch (IOException e1)
+ {
+ e1.printStackTrace();
+ System.err.println("Search failed.");
+ System.exit(-1);
+ }
+
+ Enumeration<? extends ZipEntry> entries = zip.entries();
+ ArrayList<String> classes = new ArrayList<String>();
+
+ while (entries.hasMoreElements())
+ {
+ ZipEntry entry = entries.nextElement();
+ if (entry.getName().endsWith(".class"))
+ {
+ String entryName = entry.getName().substring(0, entry.getName().lastIndexOf('.'));
+ entryName = entryName.replace('/', '.');
+ System.out.println("Found class: " + entryName);
+ classes.add(entryName);
+ }
+ }
+
+ for (String clsName : classes)
+ {
+ try
+ {
+ Class<?> cls = cl.loadClass(clsName);
+ if (!Runnable.class.isAssignableFrom(cls))
+ {
+ continue;
+ }
+ else
+ {
+ System.out.println("Found class implementing runnable: " +
+ cls.getName());
+ }
+
+ if (getMCPathField(cls) == null)
+ {
+ continue;
+ }
+ else
+ {
+ System.out.println("Found class implementing runnable " +
+ "with mcpath field: " + cls.getName());
+ }
+
+ mc = cls;
+ break;
+ }
+ catch (ClassNotFoundException e1)
+ {
+ // Ignore
+ continue;
+ }
+ }
+
+ if (mc == null)
+ {
+ System.err.println("Failed to find Minecraft main class.");
+ System.exit(-1);
+ }
+ else
+ {
+ System.out.println("Found main class: " + mc.getName());
+ }
+ }
+
+ System.setProperty("minecraft.applet.TargetDirectory", cwd);
+
+ String[] mcArgs = new String[2];
+ mcArgs[0] = userName;
+ mcArgs[1] = sessionId;
+
+ if (compatMode)
+ {
+ System.out.println("Launching in compatibility mode...");
+ mc.getMethod("main", String[].class).invoke(null, (Object) mcArgs);
+ }
+ else
+ {
+ System.out.println("Launching with applet wrapper...");
+ try
+ {
+ Class<?> MCAppletClass = cl.loadClass(
+ "net.minecraft.client.MinecraftApplet");
+ Applet mcappl = (Applet) MCAppletClass.newInstance();
+ MCFrame mcWindow = new MCFrame(windowtitle);
+ mcWindow.start(mcappl, userName, sessionId, winSize, maximize);
+ } catch (InstantiationException e)
+ {
+ System.out.println("Applet wrapper failed! Falling back " +
+ "to compatibility mode.");
+ mc.getMethod("main", String[].class).invoke(null, (Object) mcArgs);
+ }
+ }
+ } catch (ClassNotFoundException e)
+ {
+ e.printStackTrace();
+ System.exit(1);
+ } catch (IllegalArgumentException e)
+ {
+ e.printStackTrace();
+ System.exit(2);
+ } catch (IllegalAccessException e)
+ {
+ e.printStackTrace();
+ System.exit(2);
+ } catch (InvocationTargetException e)
+ {
+ e.printStackTrace();
+ System.exit(3);
+ } catch (NoSuchMethodException e)
+ {
+ e.printStackTrace();
+ System.exit(3);
+ } catch (SecurityException e)
+ {
+ e.printStackTrace();
+ System.exit(4);
+ }
+ }
+
+ public static Field getMCPathField(Class<?> mc)
+ {
+ Field[] fields = mc.getDeclaredFields();
+
+ for (int i = 0; i < fields.length; i++)
+ {
+ Field f = fields[i];
+ if (f.getType() != File.class)
+ {
+ // Has to be File
+ continue;
+ }
+ if (f.getModifiers() != (Modifier.PRIVATE + Modifier.STATIC))
+ {
+ // And Private Static.
+ continue;
+ }
+ return f;
+ }
+ return null;
+ }
+}