platform-independent configuration file path

Cargo.lock

@@ -1568,6 +1568,27 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "dirs"
+version = "5.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c45a9d03d6676652bcb5e724c7e988de1acad23a711b5217ab9cbecbec2225"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "520f05a5cbd335fae5a99ff7a6ab8627577660ee5cfd6a94a6a929b52ff0321c"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "dispatch"
 version = "0.2.0"
@@ -2306,6 +2327,16 @@ dependencies = [
  "redox_syscall 0.4.1",
 ]
 
+[[package]]
+name = "libredox"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0ff37bd590ca25063e35af745c343cb7a0271906fb7b37e4813e8f79f00268d"
+dependencies = [
+ "bitflags 2.4.2",
+ "libc",
+]
+
 [[package]]
 name = "linked-hash-map"
 version = "0.5.6"
@@ -2772,13 +2803,19 @@ version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
+[[package]]
+name = "option-ext"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
+
 [[package]]
 name = "orbclient"
 version = "0.3.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "52f0d54bde9774d3a51dcf281a5def240c71996bc6ca05d2c847ec8b2b216166"
 dependencies = [
- "libredox",
+ "libredox 0.0.2",
 ]
 
 [[package]]
@@ -2789,6 +2826,7 @@ dependencies = [
  "bevy_embedded_assets",
  "bevy_xpbd_3d",
  "blend",
+ "dirs",
  "embed-resource",
  "fastrand",
  "regex",
@@ -3082,6 +3120,17 @@ dependencies = [
  "bitflags 1.3.2",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd283d9651eeda4b2a83a43c1c91b266c40fd76ecd39a50a8c630ae69dc72891"
+dependencies = [
+ "getrandom",
+ "libredox 0.1.3",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.10.3"

Cargo.toml

@@ -31,6 +31,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_yaml = "0.9"
 
 # For reading/writing the player's configuration file.
+dirs = "5.0"
 toml_edit = { version = "0.22", features = ["serde"] }
 
 [dependencies.bevy]

src/var.rs

@@ -451,15 +451,13 @@ fn get_prefs_path() -> Option<String> {
     if file_is_readable(test) {
         return Some(test.to_string());
     }
-    if let Ok(basedir) = env::var("XDG_CONFIG_HOME") {
-        let test = basedir.to_string() + "/outfly/" + CONF_FILE;
-        if file_is_readable(test.as_str()) {
-            return Some(test);
-        }
-    } else if let Ok(basedir) = env::var("HOME") {
-        let test = basedir.to_string() + ".config/outfly/" + CONF_FILE;
-        if file_is_readable(test.as_str()) {
-            return Some(test);
+    if let Some(mut conf) = dirs::config_dir() {
+        conf.push("OutFly");
+        conf.push(CONF_FILE);
+        if let Some(test) = conf.to_str() {
+            if file_is_readable(test) {
+                return Some(test.to_string());
+            }
         }
     }
     return None;