refactor!: add n_objects to mania diff attrs

src/mania/mod.rs

@@ -131,12 +131,14 @@ impl<'map> ManiaStars<'map> {
             .clock_rate(clock_rate)
             .hit_windows();
 
+        let n_objects = self.map.hit_objects.len();
         let ManiaResult { strain, max_combo } = calculate_result(self);
 
         ManiaDifficultyAttributes {
             stars: strain.difficulty_value() * STAR_SCALING_FACTOR,
             hit_window,
             max_combo,
+            n_objects,
         }
     }
 
@@ -233,6 +235,8 @@ pub struct ManiaDifficultyAttributes {
     pub stars: f64,
     /// The perceived hit window for an n300 inclusive of rate-adjusting mods (DT/HT/etc).
     pub hit_window: f64,
+    /// The amount of hitobjects in the map.
+    pub n_objects: usize,
     /// The maximum achievable combo.
     pub max_combo: usize,
 }
@@ -243,6 +247,12 @@ impl ManiaDifficultyAttributes {
     pub fn max_combo(&self) -> usize {
         self.max_combo
     }
+
+    /// Return the amount of hitobjects.
+    #[inline]
+    pub fn n_objects(&self) -> usize {
+        self.n_objects
+    }
 }
 
 /// The result of a performance calculation on an osu!mania map.
@@ -274,6 +284,12 @@ impl ManiaPerformanceAttributes {
     pub fn max_combo(&self) -> usize {
         self.difficulty.max_combo
     }
+
+    /// Return the amount of hitobjects.
+    #[inline]
+    pub fn n_objects(&self) -> usize {
+        self.difficulty.n_objects
+    }
 }
 
 impl From<ManiaPerformanceAttributes> for ManiaDifficultyAttributes {

src/osu/mod.rs

@@ -589,6 +589,12 @@ impl OsuDifficultyAttributes {
     pub fn max_combo(&self) -> usize {
         self.max_combo
     }
+
+    /// Return the amount of hitobjects.
+    #[inline]
+    pub fn n_objects(&self) -> usize {
+        self.n_circles + self.n_sliders + self.n_spinners
+    }
 }
 
 /// The result of a performance calculation on an osu!standard map.
@@ -628,6 +634,11 @@ impl OsuPerformanceAttributes {
     pub fn max_combo(&self) -> usize {
         self.difficulty.max_combo
     }
+    /// Return the amount of hitobjects.
+    #[inline]
+    pub fn n_objects(&self) -> usize {
+        self.difficulty.n_objects()
+    }
 }
 
 impl From<OsuPerformanceAttributes> for OsuDifficultyAttributes {

tests/common/mode.rs

@@ -64,5 +64,6 @@ impl_mode! {
         stars: 3.441830819988125,
         hit_window: 40.0,
         max_combo: 956,
+        n_objects: 594,
     };
 }