3 files changed, 27 insertions, 13 deletions
diff --git a/launcher/minecraft/MinecraftInstance.cpp b/launcher/minecraft/MinecraftInstance.cpp
index cf127525..9478b1b8 100644
--- a/launcher/minecraft/MinecraftInstance.cpp
+++ b/launcher/minecraft/MinecraftInstance.cpp
@@ -455,13 +455,11 @@ QProcessEnvironment MinecraftInstance::createLaunchEnvironment()
     QProcessEnvironment env = createEnvironment();
 
 #ifdef Q_OS_LINUX
-    if (settings()->get("EnableMangoHud").toBool())
+    if (settings()->get("EnableMangoHud").toBool() && APPLICATION->capabilities() & Application::SupportsMangoHud)
     {
         auto preload = env.value("LD_PRELOAD", "") + ":libMangoHud_dlsym.so:libMangoHud.so";
-        auto lib_path = env.value("LD_LIBRARY_PATH", "") +  ":/usr/local/$LIB/mangohud/:/usr/$LIB/mangohud/";
 
         env.insert("LD_PRELOAD", preload);
-        env.insert("LD_LIBRARY_PATH", lib_path);
         env.insert("MANGOHUD", "1");
     }
 
@@ -570,11 +568,6 @@ QString MinecraftInstance::createLaunchScript(AuthSessionPtr session, MinecraftS
     if(!profile)
         return QString();
 
-    for (auto cp : getClassPath())
-    {
-        launchScript += "classPath " + cp + "\n";
-    }
-
     auto mainClass = getMainClass();
     if (!mainClass.isEmpty())
     {
diff --git a/launcher/minecraft/launch/DirectJavaLaunch.cpp b/launcher/minecraft/launch/DirectJavaLaunch.cpp
index 152485b3..ca55cd2e 100644
--- a/launcher/minecraft/launch/DirectJavaLaunch.cpp
+++ b/launcher/minecraft/launch/DirectJavaLaunch.cpp
@@ -21,6 +21,8 @@
 #include <FileSystem.h>
 #include <Commandline.h>
 
+#include "Application.h"
+
 #ifdef Q_OS_LINUX
 #include "gamemode_client.h"
 #endif
@@ -86,7 +88,7 @@ void DirectJavaLaunch::executeTask()
     }
 
 #ifdef Q_OS_LINUX
-    if (instance->settings()->get("EnableFeralGamemode").toBool())
+    if (instance->settings()->get("EnableFeralGamemode").toBool() && APPLICATION->capabilities() & Application::SupportsGameMode)
     {
         auto pid = m_process.processId();
         if (pid)
diff --git a/launcher/minecraft/launch/LauncherPartLaunch.cpp b/launcher/minecraft/launch/LauncherPartLaunch.cpp
index 3b905bf5..ce477ad7 100644
--- a/launcher/minecraft/launch/LauncherPartLaunch.cpp
+++ b/launcher/minecraft/launch/LauncherPartLaunch.cpp
@@ -95,8 +95,8 @@ bool fitsInLocal8bit(const QString & string)
 
 void LauncherPartLaunch::executeTask()
 {
-    QString newLaunchJar = APPLICATION->getJarPath("NewLaunch.jar");
-    if (newLaunchJar.isEmpty())
+    QString jarPath = APPLICATION->getJarPath("NewLaunch.jar");
+    if (jarPath.isEmpty())
     {
         const char *reason = QT_TR_NOOP("Launcher library could not be found. Please check your installation.");
         emit logLine(tr(reason), MessageLevel::Fatal);
@@ -119,6 +119,9 @@ void LauncherPartLaunch::executeTask()
     // make detachable - this will keep the process running even if the object is destroyed
     m_process.setDetachable(true);
 
+    auto classPath = minecraftInstance->getClassPath();
+    classPath.prepend(jarPath);
+
     auto natPath = minecraftInstance->getNativePath();
 #ifdef Q_OS_WIN
     if (!fitsInLocal8bit(natPath))
@@ -134,7 +137,23 @@ void LauncherPartLaunch::executeTask()
 #endif
 
     args << "-cp";
-    args << newLaunchJar;
+#ifdef Q_OS_WIN
+    QStringList processed;
+    for(auto & item: classPath)
+    {
+        if (!fitsInLocal8bit(item))
+        {
+            processed << shortPathName(item);
+        }
+        else
+        {
+            processed << item;
+        }
+    }
+    args << processed.join(';');
+#else
+    args << classPath.join(':');
+#endif
     args << "org.polymc.EntryPoint";
 
     qDebug() << args.join(' ');
@@ -162,7 +181,7 @@ void LauncherPartLaunch::executeTask()
     }
 
 #ifdef Q_OS_LINUX
-    if (instance->settings()->get("EnableFeralGamemode").toBool())
+    if (instance->settings()->get("EnableFeralGamemode").toBool() && APPLICATION->capabilities() & Application::SupportsGameMode)
     {
         auto pid = m_process.processId();
         if (pid)