chore(build): use shadow-rs for build info (#891)

closes #890

---------

Co-authored-by: Zicklag <zicklag@katharostech.com>

Cargo.toml

@@ -35,7 +35,7 @@ serde_yaml          = "0.9.25"
 thiserror           = "1.0.48"
 peg                 = "0.8.1"
 egui_extras         = { version = "0.23.0", default-features = false }
-git-version         = "0.3.9"
+shadow-rs           = { version = "0.25.0", default-features = false }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 bevy_dylib = "0.11"
@@ -134,6 +134,9 @@ opt-level = 3
 codegen-units = 1    # Improved rapier physics perf, so it might help other stuff, too
 lto           = true
 
+[build-dependencies]
+shadow-rs = "0.25.0"
+
 [package.metadata.cargo-machete]
 ignored = [
   "tracing",   # Needed to add `release_max_level_debug` feature

build.rs

@@ -0,0 +1,3 @@
+fn main() -> shadow_rs::SdResult<()> {
+    shadow_rs::new()
+}

src/ui/main_menu.rs

@@ -6,6 +6,10 @@ mod credits;
 mod map_select;
 mod player_select;
 mod settings;
+use shadow_rs::shadow;
+
+// Generate build info.
+shadow!(build_info);
 
 #[derive(HasSchema, Debug, Default, Clone)]
 #[repr(C)]
@@ -75,6 +79,26 @@ pub enum MenuPage {
     NetworkGame,
 }
 
+static VERSION_STRING: Lazy<String> = Lazy::new(|| {
+    format!(
+        "{}{}",
+        build_info::PKG_VERSION,
+        if !build_info::SHORT_COMMIT.is_empty() {
+            format!(
+                "-{}{}",
+                build_info::SHORT_COMMIT,
+                if build_info::GIT_CLEAN {
+                    ""
+                } else {
+                    " (dirty)"
+                }
+            )
+        } else {
+            String::default()
+        }
+    )
+});
+
 fn main_menu_system(world: &World) {
     let ctx = (*world.resource::<EguiCtx>()).clone();
 
@@ -96,8 +120,9 @@ fn main_menu_system(world: &World) {
                 ui.add_space(5.0);
                 ui.with_layout(egui::Layout::right_to_left(egui::Align::Max), |ui| {
                     ui.add_space(5.0);
+
                     ui.add(
-                        egui::TextEdit::singleline(&mut git_version::git_version!())
+                        egui::TextEdit::singleline(&mut VERSION_STRING.as_str())
                             .text_color(egui::Color32::WHITE)
                             .horizontal_align(egui::Align::Max),
                     );