From cfd52b00bd1e255ec1bf766b01d5ff81022194d0 Mon Sep 17 00:00:00 2001
From: cosmonaut <evan@moonside.games>
Date: Thu, 8 Dec 2022 13:29:04 -0800
Subject: [PATCH] add FIXME note for spatial hash boxing

---
 src/Collision/Fixed/SpatialHash2D.cs | 1 +
 src/Collision/Float/SpatialHash2D.cs | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/Collision/Fixed/SpatialHash2D.cs b/src/Collision/Fixed/SpatialHash2D.cs
index 7b7ceda..61d7951 100644
--- a/src/Collision/Fixed/SpatialHash2D.cs
+++ b/src/Collision/Fixed/SpatialHash2D.cs
@@ -12,6 +12,7 @@ namespace MoonWorks.Collision.Fixed
 		private readonly Fix64 cellSize;
 
 		private readonly Dictionary<long, HashSet<T>> hashDictionary = new Dictionary<long, HashSet<T>>();
+		// FIXME: this ICollidable causes boxing which triggers garbage collection
 		private readonly Dictionary<T, (ICollidable, Transform2D, uint)> IDLookup = new Dictionary<T, (ICollidable, Transform2D, uint)>();
 
 		public int MinX { get; private set; } = 0;
diff --git a/src/Collision/Float/SpatialHash2D.cs b/src/Collision/Float/SpatialHash2D.cs
index b015231..52bbd34 100644
--- a/src/Collision/Float/SpatialHash2D.cs
+++ b/src/Collision/Float/SpatialHash2D.cs
@@ -12,6 +12,7 @@ namespace MoonWorks.Collision.Float
 		private readonly int cellSize;
 
 		private readonly Dictionary<long, HashSet<T>> hashDictionary = new Dictionary<long, HashSet<T>>();
+		// FIXME: this ICollidable causes boxing which triggers garbage collection
 		private readonly Dictionary<T, (ICollidable, Transform2D, uint)> IDLookup = new Dictionary<T, (ICollidable, Transform2D, uint)>();
 
 		public int MinX { get; private set; } = 0;