PrismLauncher/libraries/launcher/org/multimc/impl/OneSixLauncher.java

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/* Copyright 2012-2021 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.
*/
package org.multimc.impl;
import org.multimc.Launcher;
import org.multimc.applet.LegacyFrame;
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import org.multimc.utils.Parameters;
import org.multimc.utils.Utils;
import java.applet.Applet;
import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
public final class OneSixLauncher implements Launcher {
private static final int DEFAULT_WINDOW_WIDTH = 854;
private static final int DEFAULT_WINDOW_HEIGHT = 480;
private static final Logger LOGGER = Logger.getLogger("OneSixLauncher");
// parameters, separated from ParamBucket
private final List<String> mcParams;
private final List<String> traits;
private final String appletClass;
private final String mainClass;
private final String userName, sessionId;
private final String windowTitle;
// secondary parameters
private final int winSizeW;
private final int winSizeH;
private final boolean maximize;
private final String cwd;
private final String serverAddress;
private final String serverPort;
private final ClassLoader classLoader;
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public OneSixLauncher(Parameters params) {
classLoader = ClassLoader.getSystemClassLoader();
mcParams = params.allSafe("param", Collections.<String>emptyList());
mainClass = params.firstSafe("mainClass", "net.minecraft.client.Minecraft");
appletClass = params.firstSafe("appletClass", "net.minecraft.client.MinecraftApplet");
traits = params.allSafe("traits", Collections.<String>emptyList());
userName = params.first("userName");
sessionId = params.first("sessionId");
windowTitle = params.firstSafe("windowTitle", "Minecraft");
serverAddress = params.firstSafe("serverAddress", null);
serverPort = params.firstSafe("serverPort", null);
cwd = System.getProperty("user.dir");
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String windowParams = params.firstSafe("windowParams", null);
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if (windowParams != null) {
String[] dimStrings = windowParams.split("x");
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if (windowParams.equalsIgnoreCase("max")) {
maximize = true;
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winSizeW = DEFAULT_WINDOW_WIDTH;
winSizeH = DEFAULT_WINDOW_HEIGHT;
} else if (dimStrings.length == 2) {
maximize = false;
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winSizeW = Integer.parseInt(dimStrings[0]);
winSizeH = Integer.parseInt(dimStrings[1]);
} else {
throw new IllegalArgumentException("Unexpected window size parameter value: " + windowParams);
}
} else {
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maximize = false;
winSizeW = DEFAULT_WINDOW_WIDTH;
winSizeH = DEFAULT_WINDOW_HEIGHT;
}
}
private void invokeMain(Class<?> mainClass) throws Exception {
Method method = mainClass.getMethod("main", String[].class);
method.invoke(null, (Object) mcParams.toArray(new String[0]));
}
private void legacyLaunch() throws Exception {
// Get the Minecraft Class and set the base folder
Class<?> minecraftClass = classLoader.loadClass(mainClass);
Field baseDirField = Utils.getMinecraftBaseDirField(minecraftClass);
if (baseDirField == null) {
LOGGER.warning("Could not find Minecraft path field.");
} else {
baseDirField.setAccessible(true);
baseDirField.set(null, new File(cwd));
}
System.setProperty("minecraft.applet.TargetDirectory", cwd);
if (!traits.contains("noapplet")) {
LOGGER.info("Launching with applet wrapper...");
try {
Class<?> mcAppletClass = classLoader.loadClass(appletClass);
Applet mcApplet = (Applet) mcAppletClass.getConstructor().newInstance();
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LegacyFrame mcWindow = new LegacyFrame(windowTitle, mcApplet);
mcWindow.start(
userName,
sessionId,
winSizeW,
winSizeH,
maximize,
serverAddress,
serverPort
);
return;
} catch (Exception e) {
LOGGER.log(Level.SEVERE, "Applet wrapper failed: ", e);
LOGGER.warning("Falling back to using main class.");
}
}
invokeMain(minecraftClass);
}
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private void launchWithMainClass() throws Exception {
// window size, title and state, onesix
// FIXME: there is no good way to maximize the minecraft window in onesix.
// the following often breaks linux screen setups
// mcparams.add("--fullscreen");
if (!maximize) {
mcParams.add("--width");
mcParams.add(Integer.toString(winSizeW));
mcParams.add("--height");
mcParams.add(Integer.toString(winSizeH));
}
if (serverAddress != null) {
mcParams.add("--server");
mcParams.add(serverAddress);
mcParams.add("--port");
mcParams.add(serverPort);
}
invokeMain(classLoader.loadClass(mainClass));
}
@Override
public void launch() throws Exception {
if (traits.contains("legacyLaunch") || traits.contains("alphaLaunch")) {
// legacy launch uses the applet wrapper
legacyLaunch();
} else {
// normal launch just calls main()
launchWithMainClass();
}
}
}