From d0c4abd38b00ef16c77d914da14236bcb7e261ad Mon Sep 17 00:00:00 2001
From: Elias Stepanik <40958815+eliasstepanik@users.noreply.github.com>
Date: Tue, 17 Jun 2025 23:07:12 +0200
Subject: [PATCH] Add JSON-configurable options menu

---
 client/Cargo.toml                    |   1 +
 client/assets/options_menu.json      |   8 ++
 client/src/plugins/ui/mod.rs         |   2 +
 client/src/plugins/ui/options/mod.rs | 118 +++++++++++++++++++++++++++
 client/src/plugins/ui/ui_plugin.rs   |   2 +
 5 files changed, 131 insertions(+)
 create mode 100644 client/assets/options_menu.json
 create mode 100644 client/src/plugins/ui/options/mod.rs

diff --git a/client/Cargo.toml b/client/Cargo.toml
index a373ba7..83422ff 100644
--- a/client/Cargo.toml
+++ b/client/Cargo.toml
@@ -12,6 +12,7 @@ build = "build.rs"
 bevy = { version = "0.16.1", features = ["jpeg", "trace_tracy", "trace_tracy_memory", "serialize"] }
 rand = "0.8.5"
 serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
 toml = "0.8"
 big_space = { git = "https://github.com/aevyrie/big_space.git", rev = "5345af11d4ce138bacf5a9a3ab53d1c3b3b103c7" }
 noise = "0.9.0"
diff --git a/client/assets/options_menu.json b/client/assets/options_menu.json
new file mode 100644
index 0000000..635424c
--- /dev/null
+++ b/client/assets/options_menu.json
@@ -0,0 +1,8 @@
+{
+  "items": [
+    { "label": "Toggle Wireframe", "action": "toggle_wireframe" },
+    { "label": "Toggle Grid", "action": "toggle_grid" },
+    { "label": "Toggle Edit Mode", "action": "toggle_edit_mode" },
+    { "label": "Exit", "action": "exit" }
+  ]
+}
diff --git a/client/src/plugins/ui/mod.rs b/client/src/plugins/ui/mod.rs
index 5eb42ed..6b6388d 100644
--- a/client/src/plugins/ui/mod.rs
+++ b/client/src/plugins/ui/mod.rs
@@ -1,2 +1,4 @@
 pub mod systems;
 pub mod ui_plugin;
+
+pub mod options;
diff --git a/client/src/plugins/ui/options/mod.rs b/client/src/plugins/ui/options/mod.rs
new file mode 100644
index 0000000..2b983f6
--- /dev/null
+++ b/client/src/plugins/ui/options/mod.rs
@@ -0,0 +1,118 @@
+use crate::plugins::environment::systems::voxels::structure::SparseVoxelOctree;
+use crate::plugins::input::systems::voxels::VoxelEditMode;
+use bevy::prelude::*;
+use serde::Deserialize;
+
+#[derive(Deserialize, Resource)]
+pub struct OptionsMenuConfig {
+    pub items: Vec<OptionItem>,
+}
+
+#[derive(Deserialize, Clone)]
+pub struct OptionItem {
+    pub label: String,
+    pub action: String,
+}
+
+#[derive(Component)]
+struct MenuButton {
+    action: String,
+}
+
+pub struct OptionsMenuPlugin;
+impl Plugin for OptionsMenuPlugin {
+    fn build(&self, app: &mut App) {
+        let config: OptionsMenuConfig = load_config();
+        app.insert_resource(config);
+        app.add_systems(Startup, setup_menu);
+        app.add_systems(Update, handle_buttons);
+    }
+}
+
+fn load_config() -> OptionsMenuConfig {
+    let path = "client/assets/options_menu.json";
+    let data = std::fs::read_to_string(path).expect("failed to read options_menu.json");
+    serde_json::from_str(&data).expect("invalid options_menu.json")
+}
+
+fn setup_menu(
+    mut commands: Commands,
+    config: Res<OptionsMenuConfig>,
+    asset_server: Res<AssetServer>,
+) {
+    commands
+        .spawn(NodeBundle {
+            style: Style {
+                position_type: PositionType::Absolute,
+                left: Val::Px(10.0),
+                top: Val::Px(10.0),
+                flex_direction: FlexDirection::Column,
+                ..default()
+            },
+            background_color: Color::rgba(0.1, 0.1, 0.1, 0.5).into(),
+            ..default()
+        })
+        .with_children(|parent| {
+            for item in config.items.iter() {
+                parent
+                    .spawn((
+                        ButtonBundle {
+                            style: Style {
+                                margin: UiRect::all(Val::Px(2.0)),
+                                padding: UiRect::all(Val::Px(4.0)),
+                                ..default()
+                            },
+                            background_color: Color::GRAY.into(),
+                            ..default()
+                        },
+                        MenuButton {
+                            action: item.action.clone(),
+                        },
+                    ))
+                    .with_children(|p| {
+                        p.spawn(TextBundle::from_section(
+                            item.label.clone(),
+                            TextStyle {
+                                font: asset_server.load("fonts/minecraft_font.ttf"),
+                                font_size: 16.0,
+                                color: Color::WHITE,
+                            },
+                        ));
+                    });
+            }
+        });
+}
+
+fn handle_buttons(
+    mut interactions: Query<(&Interaction, &MenuButton), (Changed<Interaction>, With<Button>)>,
+    mut octrees: Query<&mut SparseVoxelOctree>,
+    mut exit: EventWriter<AppExit>,
+    mut edit_mode: ResMut<VoxelEditMode>,
+) {
+    for (interaction, button) in &mut interactions {
+        if *interaction == Interaction::Pressed {
+            match button.action.as_str() {
+                "toggle_wireframe" => {
+                    for mut o in &mut octrees {
+                        o.show_wireframe = !o.show_wireframe;
+                    }
+                }
+                "toggle_grid" => {
+                    for mut o in &mut octrees {
+                        o.show_world_grid = !o.show_world_grid;
+                    }
+                }
+                "toggle_edit_mode" => {
+                    *edit_mode = match *edit_mode {
+                        VoxelEditMode::Single => VoxelEditMode::Sphere,
+                        VoxelEditMode::Sphere => VoxelEditMode::Single,
+                    };
+                }
+                "exit" => {
+                    exit.send(AppExit);
+                }
+                _ => {}
+            }
+        }
+    }
+}
diff --git a/client/src/plugins/ui/ui_plugin.rs b/client/src/plugins/ui/ui_plugin.rs
index c98c5aa..dc12dfa 100644
--- a/client/src/plugins/ui/ui_plugin.rs
+++ b/client/src/plugins/ui/ui_plugin.rs
@@ -1,3 +1,4 @@
+use crate::plugins::ui::options::OptionsMenuPlugin;
 use crate::plugins::ui::systems::ui_system::*;
 use bevy::app::{App, FixedUpdate, Plugin, PreUpdate, Startup};
 
@@ -6,5 +7,6 @@ impl Plugin for UiPlugin {
     fn build(&self, app: &mut App) {
         app.add_systems(Startup, setup);
         app.add_systems(FixedUpdate, update);
+        app.add_plugins(OptionsMenuPlugin);
     }
 }