minedmap: introduce generic tile path function, pass mipmap level

src/bin/minedmap/common.rs

@@ -30,26 +30,28 @@ pub type ProcessedRegion = ChunkArray<Option<ProcessedChunk>>;
 pub struct Config {
 	pub region_dir: PathBuf,
 	pub processed_dir: PathBuf,
-	pub light_dir: PathBuf,
-	pub map_dir: PathBuf,
+	pub output_dir: PathBuf,
 }
 
 fn coord_filename(coords: TileCoords, ext: &str) -> String {
 	format!("r.{}.{}.{}", coords.x, coords.z, ext)
 }
 
+#[derive(Debug, Clone, Copy)]
+pub enum TileKind {
+	Map,
+	Lightmap,
+}
+
 impl Config {
 	pub fn new(args: super::Args) -> Self {
 		let region_dir = [&args.input_dir, Path::new("region")].iter().collect();
 		let processed_dir = [&args.output_dir, Path::new("processed")].iter().collect();
-		let light_dir = [&args.output_dir, Path::new("light/0")].iter().collect();
-		let map_dir = [&args.output_dir, Path::new("map/0")].iter().collect();
 
 		Config {
 			region_dir,
 			processed_dir,
-			light_dir,
-			map_dir,
+			output_dir: args.output_dir,
 		}
 	}
 
@@ -58,14 +60,19 @@ impl Config {
 		[&self.processed_dir, Path::new(&filename)].iter().collect()
 	}
 
-	pub fn light_path(&self, coords: TileCoords) -> PathBuf {
-		let filename = coord_filename(coords, "png");
-		[&self.light_dir, Path::new(&filename)].iter().collect()
+	pub fn tile_dir(&self, kind: TileKind, level: usize) -> PathBuf {
+		let prefix = match kind {
+			TileKind::Map => "map",
+			TileKind::Lightmap => "light",
+		};
+		let dir = format!("{}/{}", prefix, level);
+		[&self.output_dir, Path::new(&dir)].iter().collect()
 	}
 
-	pub fn map_path(&self, coords: TileCoords) -> PathBuf {
+	pub fn tile_path(&self, kind: TileKind, level: usize, coords: TileCoords) -> PathBuf {
 		let filename = coord_filename(coords, "png");
-		[&self.map_dir, Path::new(&filename)].iter().collect()
+		let dir = self.tile_dir(kind, level);
+		[Path::new(&dir), Path::new(&filename)].iter().collect()
 	}
 }
 

src/bin/minedmap/region_processor.rs

@@ -71,11 +71,14 @@ impl<'a> RegionProcessor<'a> {
 	}
 
 	fn save_lightmap(&self, coords: TileCoords, lightmap: &image::GrayAlphaImage) -> Result<()> {
-		fs::create_with_tmpfile(&self.config.light_path(coords), |file| {
-			lightmap
-				.write_to(file, image::ImageFormat::Png)
-				.context("Failed to save image")
-		})
+		fs::create_with_tmpfile(
+			&self.config.tile_path(TileKind::Lightmap, 0, coords),
+			|file| {
+				lightmap
+					.write_to(file, image::ImageFormat::Png)
+					.context("Failed to save image")
+			},
+		)
 	}
 
 	/// Processes a single region file
@@ -126,7 +129,7 @@ impl<'a> RegionProcessor<'a> {
 		})?;
 
 		fs::create_dir_all(&self.config.processed_dir)?;
-		fs::create_dir_all(&self.config.light_dir)?;
+		fs::create_dir_all(&self.config.tile_dir(TileKind::Lightmap, 0))?;
 
 		let mut ret = BTreeSet::new();
 

src/bin/minedmap/tile_renderer.rs

@@ -59,7 +59,7 @@ impl<'a> TileRenderer<'a> {
 	fn render_tile(&self, coords: TileCoords) -> Result<()> {
 		const N: u32 = (BLOCKS_PER_CHUNK * CHUNKS_PER_REGION) as u32;
 
-		let output_path = self.config.map_path(coords);
+		let output_path = self.config.tile_path(TileKind::Map, 0, coords);
 
 		println!(
 			"Rendering tile {}",
@@ -81,7 +81,7 @@ impl<'a> TileRenderer<'a> {
 	}
 
 	pub fn run(self, regions: impl IntoIterator<Item = TileCoords>) -> Result<()> {
-		fs::create_dir_all(&self.config.map_dir)?;
+		fs::create_dir_all(&self.config.tile_dir(TileKind::Map, 0))?;
 
 		for coords in regions {
 			if let Err(err) = self.render_tile(coords) {