Introduce ChunkCoords type

src/types.rs

@@ -1,3 +1,5 @@
+use std::fmt::Debug;
+
 pub const CHUNKS_PER_REGION: u8 = 32;
 
 /// A chunk X coordinate relative to a region
@@ -7,3 +9,16 @@ pub struct ChunkX(pub u8);
 /// A chunk Z coordinate relative to a region
 #[derive(Debug, Clone, Copy)]
 pub struct ChunkZ(pub u8);
+
+/// A pair of chunk coordinates relative to a region
+#[derive(Clone, Copy)]
+pub struct ChunkCoords {
+	pub x: ChunkX,
+	pub z: ChunkZ,
+}
+
+impl Debug for ChunkCoords {
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		write!(f, "({}, {})", self.x.0, self.z.0)
+	}
+}