diff --git a/src/utility/hexgrid.ts b/src/utility/hexgrid.ts
index a71d5b104..63d0099f4 100644
--- a/src/utility/hexgrid.ts
+++ b/src/utility/hexgrid.ts
@@ -8,6 +8,7 @@ import * as arrayUtils from './arrayUtils';
 import Game from '../game';
 import { DEBUG } from '../debug';
 import { HEX_WIDTH_PX } from './const';
+import { Point } from './pointfacade';
 
 interface GridDefinition {
 	numRows: number;
@@ -241,6 +242,12 @@ export class HexGrid {
 		}
 	}
 
+	isInBounds({ x, y }: Point) {
+		return (
+			y < this.game.grid.hexes.length && y >= 0 && x < this.game.grid.hexes[y].length && x >= 0
+		);
+	}
+
 	querySelf(o) {
 		const game = this.game;
 		const defaultOpt = {