launch grasscutter properly

src-tauri/src/main.rs

@@ -3,7 +3,6 @@ all(not(debug_assertions), target_os = "windows"),
 windows_subsystem = "windows"
 )]
 
-use std::process::Command;
 use open;
 
 mod downloader;
@@ -53,10 +52,10 @@ fn run_program(path: String) {
 }
 
 #[tauri::command]
-fn run_jar(path: String) {
+fn run_jar(path: String, execute_in: String) {
   // Open the program from the specified path.
-  match open::with("/k java -jar ".to_string() + &path, "C:\\Windows\\System32\\cmd.exe") {
+  match open::with(format!("/k cd /D \"{}\" & java -jar {}", &execute_in, &path).to_string(), "C:\\Windows\\System32\\cmd.exe") {
     Ok(_) => (),
-    Err(e) => println!("Failed to open jar ({}): {}", &path, e),
+    Err(e) => println!("Failed to open jar ({} from {}): {}", &path, &execute_in, e),
   };
 }

src/ui/components/ServerLaunchSection.tsx

@@ -67,8 +67,21 @@ export default class ServerLaunchSection extends React.Component<IProps, IState>
 
     if (!config.grasscutter_path) return
 
+    let jarFolder = config.grasscutter_path
+
+    if (jarFolder.includes('/')) {
+      jarFolder = jarFolder.substring(0, config.grasscutter_path.lastIndexOf('/'))
+    } else {
+      jarFolder = jarFolder.substring(0, config.grasscutter_path.lastIndexOf('\\'))
+    }
+
+    console.log(jarFolder)
+
     // Launch the jar
-    await invoke('run_jar', { path: config.grasscutter_path })
+    await invoke('run_jar', {
+      path: config.grasscutter_path,
+      executeIn: jarFolder
+    })
   }
 
   render() {