From d8a6b72e23cc868b735b14ae2aab0fb283578bbe Mon Sep 17 00:00:00 2001
From: GriffinR <griffin.g.richards@gmail.com>
Date: Wed, 3 Dec 2025 21:31:22 -0500
Subject: [PATCH] Display error for invalid hidden item flags

---
 asm/macros/map.inc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/asm/macros/map.inc b/asm/macros/map.inc
index acbcd532dd..884ecba5f6 100644
--- a/asm/macros/map.inc
+++ b/asm/macros/map.inc
@@ -109,6 +109,9 @@
 
 	@ Defines a background hidden item event for map data
 	.macro bg_hidden_item_event x:req, y:req, elevation:req, item:req, flag:req
+	.if \flag < FLAG_HIDDEN_ITEMS_START
+	.error "Hidden Item flag \flag is too small. Must be >= FLAG_HIDDEN_ITEMS_START."
+	.endif
 	bg_event \x, \y, \elevation, BG_EVENT_HIDDEN_ITEM, \item, ((\flag) - FLAG_HIDDEN_ITEMS_START)
 	.endm