increased game length, balanced attacks

src/core/Util.ts

@@ -2,4 +2,8 @@ import {Cell} from "./Game";
 
 export function manhattanDist(c1: Cell, c2: Cell): number {
     return Math.abs(c1.x - c2.x) + Math.abs(c1.y - c2.y);
+}
+
+export function within(value: number, min: number, max: number): number {
+    return Math.min(Math.max(value, min), max);
 }