From 7cd4b38ebd85c38b5f4b2bc4c0a6b6c2698e40be Mon Sep 17 00:00:00 2001
From: extrawurst <776816+extrawurst@users.noreply.github.com>
Date: Sat, 19 Apr 2025 11:13:19 +0200
Subject: [PATCH] show git hash in game (#33)

---
 Cargo.lock   | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml   |  3 ++
 build.rs     | 13 +++++++++
 src/debug.rs | 21 ++++++++++++++
 4 files changed, 117 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index 2085fdd..fab0b0c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2224,6 +2224,37 @@ dependencies = [
  "powerfmt",
 ]
 
+[[package]]
+name = "derive_builder"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "507dfb09ea8b7fa618fcf76e953f4f5e192547945816d5358edffe39f6f94947"
+dependencies = [
+ "derive_builder_macro",
+]
+
+[[package]]
+name = "derive_builder_core"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d5bcf7b024d6835cfb3d473887cd966994907effbe9227e8c8219824d06c4e8"
+dependencies = [
+ "darling",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "derive_builder_macro"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab63b0e2bf4d5928aff72e83a7dace85d7bba5fe12dcc3c5a572d78caffd3f3c"
+dependencies = [
+ "derive_builder_core",
+ "syn",
+]
+
 [[package]]
 name = "derive_more"
 version = "1.0.0"
@@ -2993,6 +3024,7 @@ dependencies = [
  "rand",
  "ron",
  "serde",
+ "vergen-gitcl",
 ]
 
 [[package]]
@@ -3752,6 +3784,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "num_threads"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c7398b9c8b70908f6371f47ed36737907c87c52af34c268fed0bf0ceb92ead9"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "objc"
 version = "0.2.7"
@@ -5241,7 +5282,9 @@ dependencies = [
  "deranged",
  "itoa",
  "js-sys",
+ "libc",
  "num-conv",
+ "num_threads",
  "powerfmt",
  "serde",
  "time-core",
@@ -5567,6 +5610,43 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
+[[package]]
+name = "vergen"
+version = "9.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b2bf58be11fc9414104c6d3a2e464163db5ef74b12296bda593cac37b6e4777"
+dependencies = [
+ "anyhow",
+ "derive_builder",
+ "rustversion",
+ "vergen-lib",
+]
+
+[[package]]
+name = "vergen-gitcl"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9dfc1de6eb2e08a4ddf152f1b179529638bedc0ea95e6d667c014506377aefe"
+dependencies = [
+ "anyhow",
+ "derive_builder",
+ "rustversion",
+ "time",
+ "vergen",
+ "vergen-lib",
+]
+
+[[package]]
+name = "vergen-lib"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b07e6010c0f3e59fcb164e0163834597da68d1f864e2b8ca49f74de01e9c166"
+dependencies = [
+ "anyhow",
+ "derive_builder",
+ "rustversion",
+]
+
 [[package]]
 name = "version-compare"
 version = "0.2.0"
diff --git a/Cargo.toml b/Cargo.toml
index 1fd450f..da2f886 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,6 +40,9 @@ bevy_common_assets = { version = "0.12.0", features = ["ron"] }
 serde = { version = "1.0.219", features = ["derive"] }
 ron = "0.8"
 
+[build-dependencies]
+vergen-gitcl = "1.0"
+
 [lints.clippy]
 too_many_arguments = "allow"
 type_complexity = "allow"
diff --git a/build.rs b/build.rs
index dc880c3..0ff061b 100644
--- a/build.rs
+++ b/build.rs
@@ -1,4 +1,17 @@
+use vergen_gitcl::{Emitter, GitclBuilder};
+
 fn main() {
+    let gitcl = GitclBuilder::default()
+        .branch(true)
+        .sha(true)
+        .build()
+        .unwrap();
+    Emitter::default()
+        .add_instructions(&gitcl)
+        .unwrap()
+        .emit()
+        .unwrap();
+
     #[cfg(target_os = "linux")]
     println!("cargo:rustc-link-arg=-Wl,-rpath,$ORIGIN");
 }
diff --git a/src/debug.rs b/src/debug.rs
index 395333f..c82f72b 100644
--- a/src/debug.rs
+++ b/src/debug.rs
@@ -1,8 +1,11 @@
 use bevy::prelude::*;
 use bevy_debug_log::LogViewerVisibility;
 
+pub const GIT_HASH: &str = env!("VERGEN_GIT_SHA");
+
 pub fn plugin(app: &mut App) {
     app.add_systems(Update, update);
+    app.add_systems(Startup, setup);
 }
 
 fn update(mut commands: Commands, keyboard: Res<ButtonInput<KeyCode>>) {
@@ -10,3 +13,21 @@ fn update(mut commands: Commands, keyboard: Res<ButtonInput<KeyCode>>) {
         commands.trigger(LogViewerVisibility::Toggle);
     }
 }
+
+fn setup(mut commands: Commands) {
+    commands.spawn((
+        Name::new("githash-ui"),
+        Text::new(GIT_HASH),
+        TextFont {
+            font_size: 12.0,
+            ..default()
+        },
+        TextLayout::new_with_justify(JustifyText::Left),
+        Node {
+            position_type: PositionType::Absolute,
+            top: Val::Px(5.0),
+            left: Val::Px(5.0),
+            ..default()
+        },
+    ));
+}