From 1ce479afaad238ce1e663ed70192fc8103063260 Mon Sep 17 00:00:00 2001
From: Max Bradbury <max@tinybird.info>
Date: Thu, 18 Jun 2020 09:11:54 +0100
Subject: [PATCH] clarification

---
 src/game.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/game.rs b/src/game.rs
index 9e9c6a1..3bbebb6 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -3,8 +3,9 @@ use std::error::Error;
 use loe::TransformMode;
 use std::str::FromStr;
 
-/// in very early versions of Bitsy, room tiles were defined as single characters
-/// so, only 36 tiles total. later versions are comma-separated
+/// in very early versions of Bitsy, room tiles were defined as single alphanumeric characters -
+/// so there was a maximum of 36 unique tiles. later versions are comma-separated.
+/// RoomFormat is implemented here so we can save in the original format.
 #[derive(Debug, Eq, PartialEq, Copy, Clone)]
 pub enum RoomFormat {Contiguous, CommaSeparated}