Initial commit

common/utils.ts

@@ -0,0 +1,19 @@
+import { ITEM_SPRITES, SpriteRegion } from "./constants.ts";
+
+export function point_inside_rec(
+	point_x: number,
+	point_y: number,
+	rec_x: number,
+	rec_y: number,
+	rec_w: number,
+	rec_h: number,
+) {
+	return point_x > rec_x &&
+		point_x < rec_x + rec_w &&
+		point_y > rec_y &&
+		point_y < rec_y + rec_h;
+}
+
+export function get_sprite_region(id: string): SpriteRegion {
+	return ITEM_SPRITES[id] ?? { x: 0, y: 0 };
+}