Added a launcher button

Still doesn't use the extra flags like warp etc.

src/main.rs

@@ -1,7 +1,8 @@
+use config::{default_save_filename, load_config, save_config, Config};
 use eframe::egui;
+use infos::{Difficulty, LauncherInfo, WadInfo};
 use std::path::PathBuf;
-use config::{default_save_filename, save_config, load_config, Config};
+use std::process::Command;
-use infos::{WadInfo, LauncherInfo, Difficulty};
 
 pub mod config;
 pub mod infos;
@@ -74,6 +75,26 @@ impl RustDoomLauncher {
             }
         }
     }
+
+    fn launch_doom(&self) -> () {
+        let launcher = match self.selected_launcher {
+            Some(l) => self.all_launchers.get(l).unwrap(),
+            None => panic!("Gotta pick a launcher!"),
+        };
+        let iwad = match self.selected_iwad {
+            Some(i) => self.all_iwads.get(i).unwrap(),
+            None => panic!("Gotta pick and iwad"),
+        };
+        let mut command = vec!["-iwad", iwad.path.to_str().unwrap()];
+        for pwad_index in &self.selected_pwads {
+            command.push("-file");
+            let pwad = self.all_pwads.get(*pwad_index).unwrap();
+            command.push(pwad.path.to_str().unwrap());
+        }
+        Command::new(launcher.path.to_str().unwrap())
+            .args(command)
+            .spawn();
+    }
 }
 
 impl eframe::App for RustDoomLauncher {
@@ -83,17 +104,22 @@ impl eframe::App for RustDoomLauncher {
             pwads: Some(self.all_pwads.clone()),
             launchers: Some(self.all_launchers.clone()),
         };
-        save_config(&self.config_filename, &config);
+        save_config(&self.config_filename, &config).unwrap();
         true
     }
-    
+
     fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
         if self.config_file_loaded == false {
             self.get_config_file_stuff();
             self.config_file_loaded = true;
         }
         egui::containers::panel::CentralPanel::default().show(ctx, |ui| {
-            ui.heading("RustDoomLauncher");
+            ui.horizontal(|ui| {
+                ui.heading("RustDoomLauncher");
+                if ui.button("PLAY SOME DOOM!").clicked() {
+                    self.launch_doom();
+                }
+            });
             ui.horizontal_wrapped(|ui| {
                 ui.vertical(|ui| {
                     ui.label("Launchers");
@@ -156,7 +182,7 @@ impl eframe::App for RustDoomLauncher {
                     //  to pass both of these vaules in, or what the story is here.
                     let get_name = |path: &PathBuf, name: &String| {
                         if self.name.is_empty() {
-                            // Check this perhaps? Unsure whether the FileDialog can actually
+                            // Check these unwraps perhaps? Unsure whether the FileDialog can actually
                             //  return something that isn't a file
                             path.file_name().unwrap().to_str().unwrap().to_string()
                         } else {
@@ -195,7 +221,8 @@ impl eframe::App for RustDoomLauncher {
                 ui.horizontal(|ui| {
                     ui.set_max_width(180.0);
                     let warp_label = ui.label("warp");
-                    ui.text_edit_singleline(&mut self.warp_string).labelled_by(warp_label.id);
+                    ui.text_edit_singleline(&mut self.warp_string)
+                        .labelled_by(warp_label.id);
                 });
                 ui.separator();
                 ui.horizontal(|ui| {