96 lines
3.1 KiB
Java
96 lines
3.1 KiB
Java
/* Copyright 2012-2021 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.prismlauncher.impl;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodType;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import org.prismlauncher.Launcher;
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import org.prismlauncher.exception.ParseException;
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import org.prismlauncher.utils.Parameters;
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public abstract class AbstractLauncher 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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// parameters, separated from ParamBucket
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protected final List<String> mcParams;
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private final String mainClass;
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// secondary parameters
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protected final int width;
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protected final int height;
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protected final boolean maximize;
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protected final String serverAddress, serverPort;
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protected final ClassLoader classLoader;
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public AbstractLauncher(Parameters params) {
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classLoader = ClassLoader.getSystemClassLoader();
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mcParams = params.allSafe("param", new ArrayList<String>());
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mainClass = params.firstSafe("mainClass", "net.minecraft.client.Minecraft");
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serverAddress = params.firstSafe("serverAddress", null);
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serverPort = params.firstSafe("serverPort", null);
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String windowParams = params.firstSafe("windowParams", null);
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if ("max".equals(windowParams) || windowParams == null) {
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maximize = windowParams != null;
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width = DEFAULT_WINDOW_WIDTH;
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height = DEFAULT_WINDOW_HEIGHT;
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} else {
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maximize = false;
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int byIndex = windowParams.indexOf('x');
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if (byIndex != -1) {
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try {
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width = Integer.parseInt(windowParams.substring(0, byIndex));
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height = Integer.parseInt(windowParams.substring(byIndex + 1));
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return;
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} catch(NumberFormatException pass) {
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}
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}
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throw new ParseException("Invalid window size parameter value: " + windowParams);
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}
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}
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protected Class<?> loadMain() throws ClassNotFoundException {
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return classLoader.loadClass(mainClass);
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}
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protected void loadAndInvokeMain() throws Throwable, ClassNotFoundException {
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invokeMain(loadMain());
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}
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protected void invokeMain(Class<?> mainClass) throws Throwable {
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MethodHandle method = MethodHandles.lookup().findStatic(mainClass, "main", MethodType.methodType(void.class, String[].class));
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method.invokeExact(mcParams.toArray(new String[0]));
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}
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}
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