1 files changed, 148 insertions, 0 deletions
diff --git a/launcher/minecraft/launch/DirectJavaLaunch.cpp b/launcher/minecraft/launch/DirectJavaLaunch.cpp
new file mode 100644
index 00000000..2110384f
--- /dev/null
+++ b/launcher/minecraft/launch/DirectJavaLaunch.cpp
@@ -0,0 +1,148 @@
+/* Copyright 2013-2021 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.
+ */
+
+#include "DirectJavaLaunch.h"
+#include <launch/LaunchTask.h>
+#include <minecraft/MinecraftInstance.h>
+#include <FileSystem.h>
+#include <Commandline.h>
+#include <QStandardPaths>
+
+DirectJavaLaunch::DirectJavaLaunch(LaunchTask *parent) : LaunchStep(parent)
+{
+    connect(&m_process, &LoggedProcess::log, this, &DirectJavaLaunch::logLines);
+    connect(&m_process, &LoggedProcess::stateChanged, this, &DirectJavaLaunch::on_state);
+}
+
+void DirectJavaLaunch::executeTask()
+{
+    auto instance = m_parent->instance();
+    std::shared_ptr<MinecraftInstance> minecraftInstance = std::dynamic_pointer_cast<MinecraftInstance>(instance);
+    QStringList args = minecraftInstance->javaArguments();
+
+    args.append("-Djava.library.path=" + minecraftInstance->getNativePath());
+
+    auto classPathEntries = minecraftInstance->getClassPath();
+    args.append("-cp");
+    QString classpath;
+#ifdef Q_OS_WIN32
+    classpath = classPathEntries.join(';');
+#else
+    classpath = classPathEntries.join(':');
+#endif
+    args.append(classpath);
+    args.append(minecraftInstance->getMainClass());
+
+    QString allArgs = args.join(", ");
+    emit logLine("Java Arguments:\n[" + m_parent->censorPrivateInfo(allArgs) + "]\n\n", MessageLevel::MultiMC);
+
+    auto javaPath = FS::ResolveExecutable(instance->settings()->get("JavaPath").toString());
+
+    m_process.setProcessEnvironment(instance->createEnvironment());
+
+    // make detachable - this will keep the process running even if the object is destroyed
+    m_process.setDetachable(true);
+
+    auto mcArgs = minecraftInstance->processMinecraftArgs(m_session, m_serverToJoin);
+    args.append(mcArgs);
+
+    QString wrapperCommandStr = instance->getWrapperCommand().trimmed();
+    if(!wrapperCommandStr.isEmpty())
+    {
+        auto wrapperArgs = Commandline::splitArgs(wrapperCommandStr);
+        auto wrapperCommand = wrapperArgs.takeFirst();
+        auto realWrapperCommand = QStandardPaths::findExecutable(wrapperCommand);
+        if (realWrapperCommand.isEmpty())
+        {
+            const char *reason = QT_TR_NOOP("The wrapper command \"%1\" couldn't be found.");
+            emit logLine(QString(reason).arg(wrapperCommand), MessageLevel::Fatal);
+            emitFailed(tr(reason).arg(wrapperCommand));
+            return;
+        }
+        emit logLine("Wrapper command is:\n" + wrapperCommandStr + "\n\n", MessageLevel::MultiMC);
+        args.prepend(javaPath);
+        m_process.start(wrapperCommand, wrapperArgs + args);
+    }
+    else
+    {
+        m_process.start(javaPath, args);
+    }
+}
+
+void DirectJavaLaunch::on_state(LoggedProcess::State state)
+{
+    switch(state)
+    {
+        case LoggedProcess::FailedToStart:
+        {
+            //: Error message displayed if instance can't start
+            const char *reason = QT_TR_NOOP("Could not launch minecraft!");
+            emit logLine(reason, MessageLevel::Fatal);
+            emitFailed(tr(reason));
+            return;
+        }
+        case LoggedProcess::Aborted:
+        case LoggedProcess::Crashed:
+        {
+            m_parent->setPid(-1);
+            emitFailed(tr("Game crashed."));
+            return;
+        }
+        case LoggedProcess::Finished:
+        {
+            m_parent->setPid(-1);
+            // if the exit code wasn't 0, report this as a crash
+            auto exitCode = m_process.exitCode();
+            if(exitCode != 0)
+            {
+                emitFailed(tr("Game crashed."));
+                return;
+            }
+            //FIXME: make this work again
+            // m_postlaunchprocess.processEnvironment().insert("INST_EXITCODE", QString(exitCode));
+            // run post-exit
+            emitSucceeded();
+            break;
+        }
+        case LoggedProcess::Running:
+            emit logLine(QString("Minecraft process ID: %1\n\n").arg(m_process.processId()), MessageLevel::MultiMC);
+            m_parent->setPid(m_process.processId());
+            m_parent->instance()->setLastLaunch();
+            break;
+        default:
+            break;
+    }
+}
+
+void DirectJavaLaunch::setWorkingDirectory(const QString &wd)
+{
+    m_process.setWorkingDirectory(wd);
+}
+
+void DirectJavaLaunch::proceed()
+{
+    // nil
+}
+
+bool DirectJavaLaunch::abort()
+{
+    auto state = m_process.state();
+    if (state == LoggedProcess::Running || state == LoggedProcess::Starting)
+    {
+        m_process.kill();
+    }
+    return true;
+}
+