From 9e28df22a0195340016f3ec7271a0bd738c0e928 Mon Sep 17 00:00:00 2001
From: Patrick Dawson <pat@dw.is>
Date: Mon, 13 Jul 2020 01:39:39 +0200
Subject: [PATCH] Avoid overflow when calculating visible_cells

---
 scene/resources/world_2d.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scene/resources/world_2d.cpp b/scene/resources/world_2d.cpp
index 1c753fdb919..d2bc2bea312 100644
--- a/scene/resources/world_2d.cpp
+++ b/scene/resources/world_2d.cpp
@@ -211,7 +211,7 @@ struct SpatialIndexer2D {
 			List<VisibilityNotifier2D *> added;
 			List<VisibilityNotifier2D *> removed;
 
-			int visible_cells = (end.x - begin.x) * (end.y - begin.y);
+			uint64_t visible_cells = (uint64_t)(end.x - begin.x) * (uint64_t)(end.y - begin.y);
 
 			if (visible_cells > 10000) {
 				//well you zoomed out a lot, it's your problem. To avoid freezing in the for loops below, we'll manually check cell by cell