Three types of collision and a polygon class

collision/circular.ts

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+import { Point } from "../geometry/vector.ts";
+import { Vector } from "../mod.ts";
+
+export type CircleLike = {
+  center: Point;
+  radius: number;
+};
+
+export const circularCollision = (c1: CircleLike, c2: CircleLike) => {
+  const center1 = new Vector(c1.center);
+  const center2 = new Vector(c2.center);
+  const maxDist = c1.radius + c2.radius;
+
+  return Vector.dist(center1, center2) < maxDist;
+};