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/* Copyright 2012-2019 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.onesix;
import org.multimc.*;
import java.applet.Applet;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
public class OneSixLauncher implements Launcher
{
// parameters, separated from ParamBucket
private List<String> libraries;
private List<String> mcparams;
private List<String> mods;
private List<String> jarmods;
private List<String> coremods;
private List<String> traits;
private String appletClass;
private String mainClass;
private String nativePath;
private String userName, sessionId;
private String windowTitle;
private String windowParams;
// secondary parameters
private int winSizeW;
private int winSizeH;
private boolean maximize;
private String cwd;
// the much abused system classloader, for convenience (for further abuse)
private ClassLoader cl;
private void processParams(ParamBucket params) throws NotFoundException
{
libraries = params.all("cp");
mcparams = params.allSafe("param", new ArrayList<String>() );
mainClass = params.firstSafe("mainClass", "net.minecraft.client.Minecraft");
appletClass = params.firstSafe("appletClass", "net.minecraft.client.MinecraftApplet");
traits = params.allSafe("traits", new ArrayList<String>());
nativePath = params.first("natives");
userName = params.first("userName");
sessionId = params.first("sessionId");
windowTitle = params.firstSafe("windowTitle", "Minecraft");
windowParams = params.firstSafe("windowParams", "854x480");
cwd = System.getProperty("user.dir");
winSizeW = 854;
winSizeH = 480;
maximize = false;
String[] dimStrings = windowParams.split("x");
if (windowParams.equalsIgnoreCase("max"))
{
maximize = true;
}
else if (dimStrings.length == 2)
{
try
{
winSizeW = Integer.parseInt(dimStrings[0]);
winSizeH = Integer.parseInt(dimStrings[1]);
} catch (NumberFormatException ignored) {}
}
}
int legacyLaunch()
{
// Get the Minecraft Class and set the base folder
Class<?> mc;
try
{
mc = cl.loadClass(mainClass);
Field f = Utils.getMCPathField(mc);
if (f == null)
{
System.err.println("Could not find Minecraft path field.");
}
else
{
f.setAccessible(true);
f.set(null, new File(cwd));
}
} catch (Exception e)
{
System.err.println("Could not set base folder. Failed to find/access Minecraft main class:");
e.printStackTrace(System.err);
return -1;
}
System.setProperty("minecraft.applet.TargetDirectory", cwd);
if(!traits.contains("noapplet"))
{
Utils.log("Launching with applet wrapper...");
try
{
Class<?> MCAppletClass = cl.loadClass(appletClass);
Applet mcappl = (Applet) MCAppletClass.newInstance();
LegacyFrame mcWindow = new LegacyFrame(windowTitle);
mcWindow.start(mcappl, userName, sessionId, winSizeW, winSizeH, maximize);
return 0;
} catch (Exception e)
{
Utils.log("Applet wrapper failed:", "Error");
e.printStackTrace(System.err);
Utils.log();
Utils.log("Falling back to using main class.");
}
}
// init params for the main method to chomp on.
String[] paramsArray = mcparams.toArray(new String[mcparams.size()]);
try
{
mc.getMethod("main", String[].class).invoke(null, (Object) paramsArray);
return 0;
} catch (Exception e)
{
Utils.log("Failed to invoke the Minecraft main class:", "Fatal");
e.printStackTrace(System.err);
return -1;
}
}
int launchWithMainClass()
{
// window size, title and state, onesix
if (maximize)
{
// FIXME: there is no good way to maximize the minecraft window in onesix.
// the following often breaks linux screen setups
// mcparams.add("--fullscreen");
}
else
{
mcparams.add("--width");
mcparams.add(Integer.toString(winSizeW));
mcparams.add("--height");
mcparams.add(Integer.toString(winSizeH));
}
// Get the Minecraft Class.
Class<?> mc;
try
{
mc = cl.loadClass(mainClass);
} catch (ClassNotFoundException e)
{
System.err.println("Failed to find Minecraft main class:");
e.printStackTrace(System.err);
return -1;
}
// get the main method.
Method meth;
try
{
meth = mc.getMethod("main", String[].class);
} catch (NoSuchMethodException e)
{
System.err.println("Failed to acquire the main method:");
e.printStackTrace(System.err);
return -1;
}
// init params for the main method to chomp on.
String[] paramsArray = mcparams.toArray(new String[mcparams.size()]);
try
{
// static method doesn't have an instance
meth.invoke(null, (Object) paramsArray);
} catch (Exception e)
{
System.err.println("Failed to start Minecraft:");
e.printStackTrace(System.err);
return -1;
}
return 0;
}
@Override
public int launch(ParamBucket params)
{
// get and process the launch script params
try
{
processParams(params);
} catch (NotFoundException e)
{
System.err.println("Not enough arguments.");
e.printStackTrace(System.err);
return -1;
}
// grab the system classloader and ...
cl = ClassLoader.getSystemClassLoader();
if (traits.contains("legacyLaunch") || traits.contains("alphaLaunch") )
{
// legacy launch uses the applet wrapper
return legacyLaunch();
}
else
{
// normal launch just calls main()
return launchWithMainClass();
}
}
}
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