re-use bezier buffers for all sliders

src/osu/versions/no_leniency/mod.rs

@@ -21,7 +21,7 @@ use skill::Skill;
 use skill_kind::SkillKind;
 use slider_state::SliderState;
 
-use crate::{Beatmap, Mods, Strains};
+use crate::{curve::CurveBuffers, Beatmap, Mods, Strains};
 
 const OBJECT_RADIUS: f32 = 64.0;
 const SECTION_LEN: f32 = 400.0;
@@ -68,7 +68,7 @@ pub fn stars(
     }
 
     let mut slider_state = SliderState::new(map);
-    let mut curve_buf = Vec::new();
+    let mut curve_bufs = CurveBuffers::default();
     let mut ticks_buf = Vec::new();
 
     let mut hit_objects = map
@@ -84,7 +84,7 @@ pub fn stars(
                 &mut ticks_buf,
                 &mut diff_attributes,
                 &mut slider_state,
-                &mut curve_buf,
+                &mut curve_bufs,
             )
         })
         .map(|mut h| {
@@ -241,7 +241,7 @@ pub fn strains(map: &Beatmap, mods: impl Mods) -> Strains {
 
     let mut slider_state = SliderState::new(map);
     let mut ticks_buf = Vec::new();
-    let mut curve_buf = Vec::new();
+    let mut curve_bufs = CurveBuffers::default();
 
     let mut hit_objects = map.hit_objects.iter().filter_map(|h| {
         OsuObject::new(
@@ -252,7 +252,7 @@ pub fn strains(map: &Beatmap, mods: impl Mods) -> Strains {
             &mut ticks_buf,
             &mut diff_attributes,
             &mut slider_state,
-            &mut curve_buf,
+            &mut curve_bufs,
         )
     });
 

src/osu/versions/no_leniency/osu_object.rs

@@ -2,7 +2,7 @@ use super::super::super::DifficultyAttributes;
 use super::slider_state::SliderState;
 
 use crate::{
-    curve::Curve,
+    curve::{Curve, CurveBuffers},
     parse::{HitObject, HitObjectKind, Pos2},
     Beatmap,
 };
@@ -35,7 +35,7 @@ impl OsuObject {
         ticks: &mut Vec<f32>,
         attributes: &mut DifficultyAttributes,
         slider_state: &mut SliderState,
-        slider_buf: &mut Vec<Pos2>,
+        curve_bufs: &mut CurveBuffers,
     ) -> Option<Self> {
         attributes.max_combo += 1; // hitcircle, slider head, or spinner
 
@@ -68,7 +68,7 @@ impl OsuObject {
                 }
 
                 // Build the curve w.r.t. the curve points
-                let curve = Curve::new(control_points, *pixel_len, slider_buf);
+                let curve = Curve::new(control_points, *pixel_len, curve_bufs);
 
                 let velocity =
                     (BASE_SCORING_DISTANCE * map.slider_mult * slider_state.slider_velocity)