From 366914e4bba0fcb0fdc859e2dc6a5b214cff3e04 Mon Sep 17 00:00:00 2001
From: Max Bradbury <max@tinybird.info>
Date: Sun, 19 Jul 2020 12:11:09 +0100
Subject: [PATCH] don't add duplicate tiles

---
 src/lib.rs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index fdd39d5..c3165d0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -57,20 +57,23 @@ pub fn add_tiles(game_data: String, image: String, prefix: String) -> String {
                 }
             }
 
-            game.add_tile(Tile {
+            let tile = Tile {
                 /// "0" will get overwritten to a new, safe tile ID
                 id: "0".to_string(),
                 name: tile_name(&prefix, &tile_index),
                 wall: None,
                 animation_frames: vec![Image { pixels }],
                 colour_id: None
-            });
+            };
 
-            tile_index += 1;
+            if !game.tiles.contains(&tile) {
+                game.add_tile(tile);
+
+                tile_index += 1;
+            }
         }
     }
 
-    game.dedupe_tiles();
     game.to_string()
 }