feat(osu-rebalance-difficulty-calculator; DroidVisual): add slider ve…

…locity bonus
Rian8337 · Mar 23, 2022 · 225ce05 · 225ce05
1 parent 5a06b61
commit 225ce05
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/packages/osu-rebalance-difficulty-calculator/src/skills/DroidVisual.ts b/packages/osu-rebalance-difficulty-calculator/src/skills/DroidVisual.ts
@@ -31,6 +31,8 @@ export class DroidVisual extends DroidSkill {
             return 0;
         }
 
+        const last: DifficultyHitObject | undefined = this.previous.at(0);
+
         // Start with base density and give minimum global bonus for Hidden.
         let strain: number =
             (0.25 * current.noteDensity) / (1 + current.overlappingFactor * 5);
@@ -52,6 +54,26 @@ export class DroidVisual extends DroidSkill {
                 (1 + current.overlappingFactor * 2);
         }
 
+        if (current.travelTime) {
+            const currentVelocity: number =
+                current.travelDistance / current.travelTime;
+
+            // Reward sliders based on velocity, while avoiding overbuffing extremely fast sliders.
+            strain += Math.min(10, currentVelocity * 1.5);
+
+            // Reward for velocity changes if the previous object is a slider.
+            if (last?.travelTime) {
+                const prevVelocity: number =
+                    last.travelDistance / last.travelTime;
+
+                // Avoid overbuffing extremely fast sliders.
+                strain += Math.min(
+                    10,
+                    Math.abs(currentVelocity - prevVelocity) * 2.5
+                );
+            }
+        }
+
         return strain;
     }