more flashlight fixes

src/osu/mod.rs

@@ -54,7 +54,7 @@ fn custom_osu() {
 
     use crate::{Beatmap, OsuPP};
 
-    let path = "E:Games/osu!/beatmaps/70090.osu";
+    let path = "E:Games/osu!/beatmaps/809469.osu";
     let file = File::open(path).unwrap();
 
     let start = Instant::now();
@@ -76,7 +76,7 @@ fn custom_osu() {
     println!("Parsing average: {:?}", accum / iters);
 
     let start = Instant::now();
-    let result = OsuPP::new(&map).mods(8 + 16 + 64).calculate();
+    let result = OsuPP::new(&map).mods(66).calculate();
 
     let iters = 100;
     let accum = start.elapsed();

src/osu/versions/all_included/difficulty_object.rs

@@ -32,7 +32,7 @@ impl<'h> DifficultyObject<'h> {
 
         // We don't need to calculate either angle or distance
         // when one of the last->curr objects is a spinner
-        let (jump_dist, angle) = if base.is_spinner() {
+        let (jump_dist, angle) = if base.is_spinner() || prev.is_spinner() {
             (0.0, None)
         } else {
             let jump_dist = ((pos - prev_cursor_pos) * scaling_factor).length();

src/osu/versions/all_included/osu_object.rs

@@ -88,7 +88,7 @@ impl OsuObject {
                         (100.0 / slider_state.slider_velocity).max(10.0).min(1000.0) / 100.0;
                 }
 
-                // Build the curve w.r.t. the curve points
+                // Build the curve w.r.t. the control points
                 let curve = Curve::new(control_points, *pixel_len, curve_bufs);
 
                 let velocity =
@@ -182,7 +182,7 @@ impl OsuObject {
 
                 compute_vertex(final_progress);
 
-                let mut end_pos = h.pos + curve.position_at(progress);
+                let mut end_pos = h.pos + curve.position_at(1.0 - progress);
                 travel_dist *= *scaling_factor;
 
                 if hr {

src/osu/versions/all_included/skill.rs

@@ -50,6 +50,12 @@ impl Skill {
     }
 
     pub(crate) fn difficulty_value(&mut self) -> f32 {
+        // println!("---");
+
+        // for (i, strain) in self.strain_peaks.iter().enumerate() {
+        //     println!("[{}] {}", i, strain);
+        // }
+
         let mut difficulty = 0.0;
         let mut weight = 1.0;
         let decay_weight = self.kind.decay_weight();

src/osu/versions/all_included/skill_kind.rs

@@ -167,13 +167,12 @@ impl SkillKind {
                         let jump_dist = (curr.base.pos - prev.end_pos).length();
                         cumulative_strain_time += prev.strain_time;
 
-                        // We want to nerf objects that can be easily seen within the Flashlight circle radius
+                        // * We want to nerf objects that can be easily seen within the Flashlight circle radius
                         small_dist_nerf = (jump_dist / 75.0).min(1.0);
 
-                        // We also want to nerf stacks so that only the first object of the stack is accounted for
+                        // * We also want to nerf stacks so that only the first object of the stack is accounted for
                         // -- since jump distance is 0 on stacked notes in this version, approximate value as 0.2
-                        let stack_nerf =
+                        let stack_nerf = ((prev.jump_dist / scaling_factor) / 25.0).min(1.0);
-                            ((prev.jump_dist / scaling_factor) / 25.0).min(1.0).max(0.2);
 
                         result += stack_nerf * scaling_factor * jump_dist / cumulative_strain_time;
                     }
@@ -184,8 +183,7 @@ impl SkillKind {
                         if !prev.is_spinner {
                             let jump_dist = (curr.base.pos - prev.end_pos).length();
                             cumulative_strain_time += prev.strain_time;
-                            let stack_nerf =
+                            let stack_nerf = ((prev.jump_dist / scaling_factor) / 25.0).min(1.0);
-                                ((prev.jump_dist / scaling_factor) / 25.0).min(1.0).max(0.2);
 
                             result += factor * stack_nerf * scaling_factor * jump_dist
                                 / cumulative_strain_time;
@@ -211,7 +209,7 @@ impl SkillKind {
                 let speed_window_ratio = strain_time / hit_window_full;
                 let prev = history.front();
 
-                // Aim to nerf cheesy rhythms (very fast consecutive doubles with large delta times between)
+                // * Aim to nerf cheesy rhythms (very fast consecutive doubles with large delta times between)
                 if let Some(prev) =
                     prev.filter(|p| strain_time < hit_window_full && p.strain_time > strain_time)
                 {
@@ -219,12 +217,12 @@ impl SkillKind {
                         math_util::lerp(prev.strain_time, strain_time, speed_window_ratio);
                 }
 
-                // Cap delta time to the OD 300 hit window
+                // * Cap delta time to the OD 300 hit window
-                // 0.93 is derived from making sure 260bpm OD8 streams aren't nerfed harshly,
+                // * 0.93 is derived from making sure 260bpm OD8 streams aren't nerfed harshly,
-                // whilst 0.92 limits the effect of the cap
+                // * whilst 0.92 limits the effect of the cap
                 strain_time /= (strain_time / hit_window_full / 0.93).clamp(0.92, 1.0);
 
-                // Derive speed bonus for calculation
+                // * Derive speed bonus for calculation
                 let mut speed_bonus = 1.0;
 
                 if strain_time < MIN_SPEED_BONUS {