fix drawing mirror

src/activities/overworld/worldgen.rs

@@ -403,9 +403,7 @@ fn world_to_chunk_and_local_coords(world_coords: IVec2) -> (IVec2, UVec2) {
 }
 
 impl Overworld {
-	/// Return a [`Tile`] at the given world coordinates, or `None` if that tile has not
+	fn get_tile(&self, world_coords: IVec2) -> Option<&Tile> {
-	/// been generated yet.
-	pub fn get_tile(&self, world_coords: IVec2) -> Option<&Tile> {
 		let (chunk_coords, local_chunk_coords) =
 			world_to_chunk_and_local_coords(world_coords);
 
@@ -413,7 +411,15 @@ impl Overworld {
 		chunk.get_tile(local_chunk_coords)
 	}
 
+	/// Return a [`Tile`] at the given world coordinates, or `None` if that tile has not
+	/// been generated yet. use engine/world cordinates.
 	pub fn get_or_generate_tile(&mut self, world_coords: IVec2) -> &Tile {
+		let mut coords = world_coords;
+		coords.y *= -1;
+		self.get_or_generate_tiles_private(coords)
+	}
+
+	fn get_or_generate_tiles_private(&mut self, world_coords: IVec2) -> &Tile {
 		let (chunk_coords, local_chunk_coords) =
 			world_to_chunk_and_local_coords(world_coords);
 
@@ -424,8 +430,18 @@ impl Overworld {
 		chunk.get_tile(local_chunk_coords).unwrap()
 	}
 
-	/// iterate over all tiles and its global coords
+	/// Iterate over all generated tiles and its engine/world cordinates. using a [`Tile`] at the given world coordinates, or `None` if that tile has not
+	/// been generated yet.
 	pub fn iter_tiles(&self) -> impl Iterator<Item = (IVec2, &Tile)> {
+		self.iter_tilese_private().map(|(coords, tile)| {
+			let mut w_coords = coords;
+			w_coords.y *= -1;
+			(w_coords, tile)
+		})
+	}
+
+	/// iterate over all tiles and its global coords
+	fn iter_tilese_private(&self) -> impl Iterator<Item = (IVec2, &Tile)> {
 		self.chunks.iter().flat_map(|(chunk_coords, chunk)| {
 			chunk.iter_tiles().map(|(local_coords, tile)| {
 				// never fail because chunksize fits alswas into i32