From fdbc4ad83da1e9da5f5b4f179e3dba4ee96a1345 Mon Sep 17 00:00:00 2001
From: mos <mos@cyclic.zone>
Date: Thu, 10 Oct 2024 16:33:45 +0200
Subject: [PATCH] add bounds check for bpos

---
 src/lib.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index da7e71a..18bd36e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -213,6 +213,10 @@ impl State {
             Cell::Box | Cell::Goal(true) => {
                 let bpos = dpos + pos;
 
+                if ((bpos.1 * self.lvl.size.0) + bpos.0) as usize >= self.lvl.map.len() {
+                    return Err(Error::BadMove(bpos));
+                }
+
                 match self.lvl[bpos] {
                     Cell::None => {
                         self.toggle_box(dpos);