From ce60a17fd5db7aedf3f0f2ec836c46c70165d849 Mon Sep 17 00:00:00 2001
From: staphen <staphen@gmail.com>
Date: Mon, 29 Apr 2024 14:54:53 -0400
Subject: [PATCH] Fix OOB when debugging megatile data near the edge of the
 dungeon

---
 Source/debug.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Source/debug.cpp b/Source/debug.cpp
index 4e6720384..b5eb09a14 100644
--- a/Source/debug.cpp
+++ b/Source/debug.cpp
@@ -208,16 +208,20 @@ bool GetDebugGridText(Point dungeonCoords, char *debugGridTextBuffer)
 		info = TileHasAny(dungeonCoords, TileProperties::Trap);
 		break;
 	case DebugGridTextItem::AutomapView:
-		info = AutomapView[megaCoords.x][megaCoords.y];
+		if (megaCoords.x >= 0 && megaCoords.x < DMAXX && megaCoords.y >= 0 && megaCoords.y < DMAXY)
+			info = AutomapView[megaCoords.x][megaCoords.y];
 		break;
 	case DebugGridTextItem::dungeon:
-		info = dungeon[megaCoords.x][megaCoords.y];
+		if (megaCoords.x >= 0 && megaCoords.x < DMAXX && megaCoords.y >= 0 && megaCoords.y < DMAXY)
+			info = dungeon[megaCoords.x][megaCoords.y];
 		break;
 	case DebugGridTextItem::pdungeon:
-		info = pdungeon[megaCoords.x][megaCoords.y];
+		if (megaCoords.x >= 0 && megaCoords.x < DMAXX && megaCoords.y >= 0 && megaCoords.y < DMAXY)
+			info = pdungeon[megaCoords.x][megaCoords.y];
 		break;
 	case DebugGridTextItem::Protected:
-		info = Protected.test(megaCoords.x, megaCoords.y);
+		if (megaCoords.x >= 0 && megaCoords.x < DMAXX && megaCoords.y >= 0 && megaCoords.y < DMAXY)
+			info = Protected.test(megaCoords.x, megaCoords.y);
 		break;
 	case DebugGridTextItem::None:
 		return false;