From dca191ccae0d793b315d3dbf8aacf5d20ba33067 Mon Sep 17 00:00:00 2001
From: Max Bradbury <max@tinybird.info>
Date: Sat, 18 Jul 2020 22:26:13 +0100
Subject: [PATCH] don't allow tiles with an ID of 0

---
 src/game.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/game.rs b/src/game.rs
index d47696e..4e8a92d 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -692,7 +692,7 @@ impl Game {
     /// adds a tile safely and returns the ID
     #[inline]
     pub fn add_tile(&mut self, mut tile: Tile) -> String {
-        if self.tile_ids().contains(&tile.id) {
+        if tile.id == "0".to_string() || self.tile_ids().contains(&tile.id) {
             let new_id = self.new_tile_id();
             if new_id != tile.id {
                 tile.id = new_id;