read preferences from outfly.toml

Cargo.lock

@@ -691,7 +691,7 @@ dependencies = [
  "quote",
  "rustc-hash",
  "syn 2.0.52",
- "toml_edit",
+ "toml_edit 0.21.1",
 ]
 
 [[package]]
@@ -2813,7 +2813,7 @@ dependencies = [
  "regex",
  "serde",
  "serde_yaml",
- "toml_edit",
+ "toml_edit 0.22.12",
 ]
 
 [[package]]
@@ -2997,7 +2997,7 @@ version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6d37c51ca738a55da99dc0c4a34860fd675453b8b36209178c2249bb13651284"
 dependencies = [
- "toml_edit",
+ "toml_edit 0.21.1",
 ]
 
 [[package]]
@@ -3304,6 +3304,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb3622f419d1296904700073ea6cc23ad690adbd66f13ea683df73298736f0c1"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "serde_yaml"
 version = "0.9.34+deprecated"
@@ -3592,6 +3601,9 @@ name = "toml_datetime"
 version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3550f4e9685620ac18a50ed434eb3aec30db8ba93b0287467bca5826ea25baf1"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "toml_edit"
@@ -3601,7 +3613,20 @@ checksum = "6a8534fd7f78b5405e860340ad6575217ce99f38d4d5c8f2442cb5ecb50090e1"
 dependencies = [
  "indexmap",
  "toml_datetime",
- "winnow",
+ "winnow 0.5.40",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.22.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3328d4f68a705b2a4498da1d580585d39a6510f98318a2cec3018a7ec61ddef"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "winnow 0.6.7",
 ]
 
 [[package]]
@@ -4481,6 +4506,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "winnow"
+version = "0.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14b9415ee827af173ebb3f15f9083df5a122eb93572ec28741fb153356ea2578"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "winreg"
 version = "0.10.1"

Cargo.toml

@@ -36,13 +36,11 @@ bevy_embedded_assets = { version = "0.10.2", optional = true }
 fastrand = "2.0"
 
 # For conversation specification files, which are in YAML
-serde = "1.0"
+serde = { version = "1.0", features = ["derive"] }
 serde_yaml = "0.9"
 
 # For reading/writing the player's configuration file.
-# Use the same version/features as the already included toml_edit,
-# in the hope of shaving off some kilobytes from the resulting binary
-toml_edit = { version = "*", default-features = false, features = ["parse"] }
+toml_edit = { version = "0.22", default-features = false, features = ["parse", "serde"] }
 
 [build-dependencies]
 embed-resource = "1.6.3"  # embedding of .exe metadata

outfly.toml

@@ -0,0 +1,21 @@
+#   ▄████████▄      +        ███ +  ▄█████████ ███     +
+#  ███▀    ▀███ +         +  ███    ███▀  +    ███ +       +
+#  ███  +   ███ ███   ███ █████████ ███        ███  ███   ███
+#  ███     +███ ███   ███    ███    ███▐██████ ███  ███   ███
+#  ███ +    ███ ███+  ███   +███    ███     +  ███  ███ + ███
+#  ███▄    ▄███ ███▄  ███    ███ +  ███  +     ███  ███▄  ███
+#   ▀████████▀ + ▀███████    ███▄   ███▄       ▀████ ▀███████
+#       +                  +                +             ███
+#  +   ▀████████████████████████████████████████████████████▀
+#
+# User preferences for the game OutFly.
+# See https://codeberg.org/hut/outfly
+
+# fullscreen_mode may be "borderless", "true", or "sized"
+fullscreen_mode = "borderless"
+
+# window_mode may be "windowed", or "fullscreen"
+window_mode = "fullscreen"
+
+# render_mode may be "vulkan" or "gl"
+render_mode = "vulkan"

src/main.rs

@@ -127,6 +127,8 @@ impl Plugin for OutFlyPlugin {
             skeleton::SkeletonPlugin,
             world::WorldPlugin,
         ));
+
+        var::load_prefs();
     }
 }
 

src/var.rs

@@ -13,6 +13,11 @@
 
 use bevy::prelude::*;
 use std::collections::HashMap;
+use serde::Deserialize;
+use toml_edit::DocumentMut;
+use toml_edit::de::from_document;
+use std::env;
+use std::fs;
 
 pub const SCOPE_SEPARATOR: &str = "$";
 
@@ -26,6 +31,84 @@ pub const TOKEN_NEGATE: &str = "~";
 
 pub const DEFAULT_CHAT_SPEED: f32 = 10.0;
 
+#[derive(Resource, Deserialize, Debug)]
+#[serde(default)]
+pub struct Preferences {
+    pub fullscreen_mode: String,
+    pub window_mode: String,
+    pub render_mode: String,
+}
+
+impl Default for Preferences {
+    fn default() -> Self {
+        Self {
+            fullscreen_mode: "borderless".to_string(),
+            window_mode: "fullscreen".to_string(),
+            render_mode: "vulkan".to_string(),
+        }
+    }
+}
+
+fn file_is_readable(file_path: &str) -> bool {
+    fs::metadata(file_path).map(|metadata| metadata.is_file()).unwrap_or(false)
+}
+
+fn get_prefs_path() -> Option<String> {
+    let test = "outfly.toml";
+    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/outfly.toml";
+        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/outfly.toml";
+        if file_is_readable(test.as_str()) {
+            return Some(test);
+        }
+    }
+    return None;
+}
+
+pub fn load_prefs() -> Preferences {
+    let prefs_path = match get_prefs_path() {
+        Some(path) => path,
+        None => {
+            warn!("Found no preference file, using default preferences.");
+            return Preferences::default();
+        }
+    };
+    let toml = fs::read_to_string(&prefs_path);
+    let toml = match toml {
+        Ok(toml) => toml,
+        Err(error) => {
+            error!("Failed to open preferences file '{prefs_path}': {error}");
+            return Preferences::default();
+        }
+    };
+    match toml.parse::<DocumentMut>() {
+        Ok(doc) => {
+            match from_document::<Preferences>(doc) {
+                Ok(pref) => {
+                    info!("Loaded preference file from {prefs_path}");
+                    dbg!(&pref);
+                    return pref;
+                }
+                Err(error) => {
+                    error!("Failed to read preference line: {error}");
+                    return Preferences::default();
+                }
+            }
+        }
+        Err(error) => {
+            error!("Failed to open preferences: {error}");
+            return Preferences::default();
+        }
+    }
+}
+
 #[derive(Resource)]
 pub struct Settings {
     pub dev_mode: bool,