240 lines
8.7 KiB
Java
240 lines
8.7 KiB
Java
// SPDX-License-Identifier: GPL-3.0-only
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/*
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* PolyMC - Minecraft Launcher
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* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Linking this library statically or dynamically with other modules is
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* making a combined work based on this library. Thus, the terms and
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* conditions of the GNU General Public License cover the whole
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* combination.
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*
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* As a special exception, the copyright holders of this library give
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* you permission to link this library with independent modules to
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* produce an executable, regardless of the license terms of these
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* independent modules, and to copy and distribute the resulting
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* executable under terms of your choice, provided that you also meet,
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* for each linked independent module, the terms and conditions of the
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* license of that module. An independent module is a module which is
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* not derived from or based on this library. If you modify this
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* library, you may extend this exception to your version of the
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* library, but you are not obliged to do so. If you do not wish to do
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* so, delete this exception statement from your version.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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*
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* Copyright 2013-2021 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.polymc.impl;
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import org.polymc.Launcher;
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import org.polymc.applet.LegacyFrame;
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import org.polymc.utils.Parameters;
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import org.polymc.utils.Utils;
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import java.applet.Applet;
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import java.io.File;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.net.URL;
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import java.net.URLClassLoader;
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import java.nio.file.Paths;
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import java.util.Collections;
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import java.util.List;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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public final class OneSixLauncher implements Launcher {
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private static final int DEFAULT_WINDOW_WIDTH = 854;
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private static final int DEFAULT_WINDOW_HEIGHT = 480;
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private static final Logger LOGGER = Logger.getLogger("OneSixLauncher");
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// parameters, separated from ParamBucket
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private final List<String> classPath;
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private final List<String> mcParams;
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private final List<String> traits;
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private final String appletClass;
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private final String mainClass;
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private final String userName, sessionId;
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private final String windowTitle;
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// secondary parameters
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private final int winSizeW;
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private final int winSizeH;
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private final boolean maximize;
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private final String cwd;
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private final String serverAddress;
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private final String serverPort;
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public OneSixLauncher(Parameters params) {
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classPath = params.allSafe("classPath", Collections.<String>emptyList());
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mcParams = params.allSafe("param", Collections.<String>emptyList());
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mainClass = params.firstSafe("mainClass", "net.minecraft.client.Minecraft");
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appletClass = params.firstSafe("appletClass", "net.minecraft.client.MinecraftApplet");
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traits = params.allSafe("traits", Collections.<String>emptyList());
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userName = params.first("userName");
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sessionId = params.first("sessionId");
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windowTitle = params.firstSafe("windowTitle", "Minecraft");
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serverAddress = params.firstSafe("serverAddress", null);
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serverPort = params.firstSafe("serverPort", null);
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cwd = System.getProperty("user.dir");
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String windowParams = params.firstSafe("windowParams", null);
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if (windowParams != null) {
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String[] dimStrings = windowParams.split("x");
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if (windowParams.equalsIgnoreCase("max")) {
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maximize = true;
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winSizeW = DEFAULT_WINDOW_WIDTH;
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winSizeH = DEFAULT_WINDOW_HEIGHT;
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} else if (dimStrings.length == 2) {
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maximize = false;
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winSizeW = Integer.parseInt(dimStrings[0]);
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winSizeH = Integer.parseInt(dimStrings[1]);
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} else {
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throw new IllegalArgumentException("Unexpected window size parameter value: " + windowParams);
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}
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} else {
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maximize = false;
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winSizeW = DEFAULT_WINDOW_WIDTH;
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winSizeH = DEFAULT_WINDOW_HEIGHT;
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}
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}
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private void invokeMain(Class<?> mainClass) throws Exception {
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Method method = mainClass.getMethod("main", String[].class);
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method.invoke(null, (Object) mcParams.toArray(new String[0]));
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}
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private void legacyLaunch(ClassLoader classLoader) throws Exception {
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// Get the Minecraft Class and set the base folder
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Class<?> minecraftClass = classLoader.loadClass(mainClass);
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Field baseDirField = Utils.getMinecraftBaseDirField(minecraftClass);
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if (baseDirField == null) {
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LOGGER.warning("Could not find Minecraft path field.");
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} else {
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baseDirField.setAccessible(true);
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baseDirField.set(null, new File(cwd));
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}
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System.setProperty("minecraft.applet.TargetDirectory", cwd);
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if (!traits.contains("noapplet")) {
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LOGGER.info("Launching with applet wrapper...");
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try {
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Class<?> mcAppletClass = classLoader.loadClass(appletClass);
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Applet mcApplet = (Applet) mcAppletClass.getConstructor().newInstance();
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LegacyFrame mcWindow = new LegacyFrame(windowTitle, mcApplet);
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mcWindow.start(
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userName,
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sessionId,
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winSizeW,
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winSizeH,
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maximize,
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serverAddress,
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serverPort
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);
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return;
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} catch (Exception e) {
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LOGGER.log(Level.SEVERE, "Applet wrapper failed: ", e);
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LOGGER.warning("Falling back to using main class.");
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}
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}
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invokeMain(minecraftClass);
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}
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private void launchWithMainClass(ClassLoader classLoader) throws Exception {
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// window size, title and state, onesix
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// FIXME: there is no good way to maximize the minecraft window in onesix.
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// the following often breaks linux screen setups
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// mcparams.add("--fullscreen");
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if (!maximize) {
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mcParams.add("--width");
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mcParams.add(Integer.toString(winSizeW));
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mcParams.add("--height");
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mcParams.add(Integer.toString(winSizeH));
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}
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if (serverAddress != null) {
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mcParams.add("--server");
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mcParams.add(serverAddress);
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mcParams.add("--port");
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mcParams.add(serverPort);
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}
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invokeMain(classLoader.loadClass(mainClass));
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}
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@Override
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public void launch() throws Exception {
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URL[] classPathURLs = new URL[classPath.size()];
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for (int i = 0; i < classPath.size(); i++) {
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File f = new File(classPath.get(i));
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classPathURLs[i] = f.toURI().toURL();
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}
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// Some mod loaders (Fabric) read this property to determine the classpath.
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String systemClassPath = System.getProperty("java.class.path");
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systemClassPath += File.pathSeparator + String.join(File.pathSeparator, classPath);
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System.setProperty("java.class.path", systemClassPath);
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ClassLoader classLoader = new URLClassLoader(classPathURLs, getClass().getClassLoader());
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if (traits.contains("legacyLaunch") || traits.contains("alphaLaunch")) {
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// legacy launch uses the applet wrapper
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legacyLaunch(classLoader);
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} else {
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// normal launch just calls main()
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launchWithMainClass(classLoader);
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}
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}
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}
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