Added an overlay for non 0 exit codes.

app/assets/js/processbuilder.js

@@ -94,6 +94,21 @@ class ProcessBuilder {
         })
         child.on('close', (code, signal) => {
             logger.info('Exited with code', code)
+            if(code != 0){
+                setOverlayContent(
+                    Lang.queryJS('processbuilder.exit.exitErrorHeader'),
+                    Lang.queryJS('processbuilder.exit.message') + code,
+                    Lang.queryJS('processbuilder.exit.copyCode')
+                )
+                setOverlayHandler(() => {
+                    copy(Lang.queryJS('processbuilder.exit.copyCodeText') + code)
+                    toggleOverlay(false)
+                })
+                setDismissHandler(() => {
+                    toggleOverlay(false)
+                })
+                toggleOverlay(true, true)
+            }
             fs.remove(tempNativePath, (err) => {
                 if(err){
                     logger.warn('Error while deleting temp dir', err)

app/assets/js/scripts/uicore.js

@@ -6,7 +6,7 @@
  */
 // Requirements
 const $                                         = require('jquery')
-const {ipcRenderer, shell, webFrame} = require('electron')
+const {ipcRenderer, shell, webFrame, clipboard} = require('electron')
 const remote                                    = require('@electron/remote')
 const isDev                                     = require('./assets/js/isdev')
 const { LoggerUtil }                            = require('helios-core')
@@ -15,6 +15,10 @@ const Lang                           = require('./assets/js/langloader')
 const loggerUICore             = LoggerUtil.getLogger('UICore')
 const loggerAutoUpdater        = LoggerUtil.getLogger('AutoUpdater')
 
+function copy(value) {
+    clipboard.writeText(value, 'selection')
+}
+
 // Log deprecation and process warnings.
 process.traceProcessWarnings = true
 process.traceDeprecation = true

app/assets/lang/en_US.toml

@@ -218,6 +218,12 @@ joined = "Exploring the Realm!"
 [js.overlay]
 dismiss = "Dismiss"
 
+[js.processbuilder.exit]
+exitErrorHeader = "Game exited with an error code"
+message = "The game exited abnormally with the exited code: "
+copyCode = "Copy exit code"
+copyCodeText = "Minecraft exit code "
+
 [js.settings.fileSelectors]
 executables = "Executables"
 allFiles = "All Files"