osu: minor adjustments

osu/src/difficulty_attributes.rs

@@ -1,10 +0,0 @@
-pub struct DifficultyAttributes {
-    pub stars: f32,
-    pub ar: f32,
-    pub od: f32,
-    pub speed_strain: f32,
-    pub aim_strain: f32,
-    pub max_combo: usize,
-    pub n_circles: usize,
-    pub n_spinners: usize,
-}

osu/src/lib.rs

@@ -1,13 +1,22 @@
-mod versions;
-pub use versions::*;
-
 mod curve;
-mod difficulty_attributes;
 mod math_util;
 mod pp;
+mod versions;
 
-pub use difficulty_attributes::DifficultyAttributes;
 pub use pp::*;
+pub use versions::*;
+
+#[derive(Default)]
+pub struct DifficultyAttributes {
+    pub stars: f32,
+    pub ar: f32,
+    pub od: f32,
+    pub speed_strain: f32,
+    pub aim_strain: f32,
+    pub max_combo: usize,
+    pub n_circles: usize,
+    pub n_spinners: usize,
+}
 
 const HITWINDOW_OD_MIN: f32 = 80.0;
 const HITWINDOW_OD_AVG: f32 = 50.0;

osu/src/versions/no_sliders_no_leniency/mod.rs

@@ -17,20 +17,19 @@ const OBJECT_RADIUS: f32 = 64.0;
 const SECTION_LEN: f32 = 400.0;
 const DIFFICULTY_MULTIPLIER: f32 = 0.0675;
 
-/// Star calculation for osu!standard maps
+/// Star calculation for osu!standard maps.
+///
+/// Sliders are considered as regular hitcircles and stack leniency is ignored.
+/// Still very good results but the least precise version in general.
+/// However, this is the most efficient one.
 pub fn stars(map: &Beatmap, mods: impl Mods) -> DifficultyAttributes {
     let attributes = map.attributes().mods(mods);
 
     if map.hit_objects.len() < 2 {
         return DifficultyAttributes {
-            stars: 0.0,
             ar: attributes.ar,
             od: attributes.od,
-            speed_strain: 0.0,
-            aim_strain: 0.0,
-            max_combo: 0,
-            n_circles: 0,
-            n_spinners: 0,
+            ..Default::default()
         };
     }
 
@@ -322,6 +321,7 @@ mod tests {
             // .combo(100)
             // .n100(0)
             .mods(0);
+
         let result = calculator.calculate();
 
         println!("Stars: {}", result.attributes.stars);