fix: InfiniteTileLayerData index of out bounds (#289)

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `ObjectShape::Text::kerning`'s default value, which should have been set to `true` instead of `false`. (#278)
 - Unhandled u32 parsing panic in `decode_csv`. (#288)
 - Panic in `<Color as FromStr>::from_str` when parsing non-ascii input. (#290)
+- Index out of bounds in `InfiniteTileLayerData` when parsing a chunk. (#289)
 
 ## [Unreleased]
 ## Changed

src/layers/tile/infinite.rs

@@ -47,6 +47,10 @@ impl InfiniteTileLayerData {
                         let internal_pos = (x - chunk.x, y - chunk.y);
                         let internal_index = (internal_pos.0 + internal_pos.1 * chunk.width as i32) as usize;
 
+                        if internal_index >= chunk.tiles.len() {
+                            return Err(Error::InvalidTileFound);
+                        }
+
                         chunks.entry(chunk_pos).or_insert_with(ChunkData::new).tiles[chunk_index] = chunk.tiles[internal_index];
                     }
                 }