added gameboard

gameboard-service/src/lib/geometry.ts

@@ -0,0 +1,31 @@
+import type { Point } from "./playback/types";
+
+export function isEqualPoint(p1?: Point, p2?: Point): boolean {
+  if (p1 == undefined || p2 == undefined) {
+    return false;
+  }
+
+  return p1.x == p2.x && p1.y == p2.y;
+}
+
+export function isAdjacentPoint(p1: Point, p2: Point): boolean {
+  return calcManhattan(p1, p2) == 1;
+}
+
+export function calcManhattan(p1: Point, p2: Point): number {
+  return Math.abs(p1.x - p2.x) + Math.abs(p1.y - p2.y);
+}
+
+export function calcSourceWrapPosition(src: Point, dst: Point): Point {
+  return {
+    x: src.x - Math.sign(dst.x - src.x),
+    y: src.y - Math.sign(dst.y - src.y)
+  };
+}
+
+export function calcDestinationWrapPosition(src: Point, dst: Point): Point {
+  return {
+    x: dst.x + Math.sign(dst.x - src.x),
+    y: dst.y + Math.sign(dst.y - src.y)
+  };
+}