3D resolution setting extended down to 1/16

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

DESIGN.md

@@ -9,7 +9,7 @@ An original dungeon management game (genre: dungeon building & defence) that run
 - All UI windows use **CP437 frames** (single lines for panels, double lines for dialogs); **all bars are CP437 block characters** (█ ▌ ░)
 - Text only in **fixed integer sizes**: 1×, 2× and 4× the 6×8 glyph size, times an integer **interface factor** (automatic from the device resolution, or 1×–4× in the settings)
 - The interface is drawn in **device pixels** (high DPI) and laid out on the **character grid**, so every font pixel has exactly the same size
-- **3D resolution** setting: the world can be rendered at 1/1, 1/2, 1/3 or 1/4 resolution and scaled up by exactly that factor (pixel look); the interface stays sharp
+- **3D resolution** setting: the world can be rendered at 1/1 down to 1/16 resolution and scaled up by exactly that factor (pixel look); the interface stays sharp
 - Sound: event system + macroquad audio prepared (volume, mute key M); sounds will be generated later
 - Languages: all in-game texts live in **language files** (`lang/*.lang`, key = text); English is the reference/fallback, German included, more can be added. The language is chosen on first start and stored in the browser.
 - Repository language: **English** (code, comments, docs, commit messages)

src/main.rs

@@ -73,7 +73,7 @@ fn apply_settings(s: &Settings, r3d: &mut R3d) {
     r3d.outlines = s.outlines;
     r3d.set_wall_detail(s.wall_subdivisions());
     r3d.max_lights = s.max_lights as usize;
-    r3d.render_div = s.render_scale.clamp(1, 4) as u32;
+    r3d.render_div = s.render_scale.clamp(1, 16) as u32;
     audio::set_volumes(s.music_volume, s.volume, s.muted);
 }
 

src/menu.rs

@@ -139,7 +139,7 @@ fn item_change(it: Item, s: &mut Settings, d: i32) {
         Item::WallDetail => s.wall_detail = cycle(&[1u8, 2, 3], s.wall_detail, d),
         Item::Lights => s.max_lights = cycle(&[8u8, 16, 24], s.max_lights, d),
         Item::UiScale => s.ui_factor = cycle(&[0u8, 1, 2, 3, 4], s.ui_factor, d),
-        Item::RenderScale => s.render_scale = cycle(&[1u8, 2, 3, 4], s.render_scale.max(1), d),
+        Item::RenderScale => s.render_scale = cycle(&(1u8..=16).collect::<Vec<u8>>(), s.render_scale.clamp(1, 16), d),
         Item::GameSpeed => s.game_speed = cycle(&[1.0f32, 2.0], s.game_speed, d),
         Item::Hints => s.hints = !s.hints,
     }

src/settings.rs

@@ -142,7 +142,8 @@ pub struct Settings {
     pub wall_detail: u8, // 1 low, 2 medium, 3 high
     pub max_lights: u8,  // 8, 16 or 24
     pub ui_factor: u8,   // interface size: 0 = automatic, 1..4 = fixed integer factor
-    pub render_scale: u8, // 3D world resolution divisor: 1 = full, 2..4 = pixel look
+    pub render_scale: u8, // 3D world resolution divisor: 1 = full, 2..16 = pixel look
+    pub touch_ui: u8,     // touch interface: 0 = automatic (after the first touch), 1 = on, 2 = off
     // game
     pub game_speed: f32, // 1 or 2
     pub hints: bool,
@@ -168,6 +169,7 @@ impl Default for Settings {
             max_lights: 24,
             ui_factor: 0,
             render_scale: 1,
+            touch_ui: 0,
             game_speed: 1.0,
             hints: true,
             map_w: 64,