add score "edit" mode

projects/common/src/utils/curve-point.ts

@@ -0,0 +1,14 @@
+export class CurvePoint {
+  constructor(
+    private acc: number,
+    private multiplier: number
+  ) {}
+
+  getAcc(): number {
+    return this.acc;
+  }
+
+  getMultiplier(): number {
+    return this.multiplier;
+  }
+}

projects/common/src/utils/math-utils.ts

@@ -0,0 +1,29 @@
+/**
+ * Clamps a value between two values.
+ *
+ * @param value the value
+ * @param min the minimum
+ * @param max the maximum
+ */
+export function clamp(value: number, min: number, max: number) {
+  if (min !== null && value < min) {
+    return min;
+  }
+
+  if (max !== null && value > max) {
+    return max;
+  }
+
+  return value;
+}
+
+/**
+ * Lerps between two values.
+ *
+ * @param v0 value 0
+ * @param v1 value 1
+ * @param t the amount to lerp
+ */
+export function lerp(v0: number, v1: number, t: number) {
+  return v0 + t * (v1 - v0);
+}