From 8e539da2f28bfdb5667b9ed081d2e3a5c43e40ce Mon Sep 17 00:00:00 2001
From: Lennard Sprong <x-sheep@users.noreply.github.com>
Date: Sun, 5 Nov 2023 16:25:35 +0100
Subject: [PATCH] Improve error display

---
 src/variety/lineofsight.js | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/variety/lineofsight.js b/src/variety/lineofsight.js
index ebcc46b61..efe3daf47 100644
--- a/src/variety/lineofsight.js
+++ b/src/variety/lineofsight.js
@@ -187,6 +187,28 @@
 					if (this.checkOnly) {
 						break;
 					}
+					bd.border.setnoerr();
+					if (isvert) {
+						bd.cellinside(
+							Math.min(cell.bx, pos.bx),
+							cell.by,
+							Math.max(cell.bx, pos.bx),
+							cell.by
+						).seterr(1);
+						bd.borderinside(pos.bx, pos.by - found * 2, pos.bx, pos.by).seterr(
+							1
+						);
+					} else {
+						bd.cellinside(
+							cell.bx,
+							Math.min(cell.by, pos.by),
+							cell.bx,
+							Math.max(cell.by, pos.by)
+						).seterr(1);
+						bd.borderinside(pos.bx - found * 2, pos.by, pos.bx, pos.by).seterr(
+							1
+						);
+					}
 					cell.seterr(1);
 				}
 			}