From 689a89c18c0e02bbd7159fdf4c363fd260150522 Mon Sep 17 00:00:00 2001
From: Max Bradbury <max@tinybird.info>
Date: Fri, 21 Aug 2020 14:48:12 +0100
Subject: [PATCH] documentation comment

---
 src/tile.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/tile.rs b/src/tile.rs
index e3066ad..c2ee574 100644
--- a/src/tile.rs
+++ b/src/tile.rs
@@ -5,7 +5,9 @@ use crate::image::animation_frames_from_string;
 pub struct Tile {
     pub id: String,
     pub name: Option<String>,
-    pub wall: Option<bool>, // this is "optional" in that a tile can have `WAL true|false` or neither
+    /// this is "optional" in that a tile can have `WAL true`, `WAL false` or neither
+    /// obviously Some(false) is the same as None but we want to preserve the original formatting
+    pub wall: Option<bool>,
     pub animation_frames: Vec<Image>,
     pub colour_id: Option<u64>,
 }