handle room formats

src/game.rs

@@ -242,7 +242,7 @@ impl ToString for Game {
         }
 
         for room in &self.rooms {
-            segments.push(room.to_string());
+            segments.push(room.to_string(self.room_format(), self.room_type));
         }
 
         for tile in &self.tiles {

src/room.rs

@@ -100,10 +100,14 @@ impl From<String> for Room {
         let mut tiles: Vec<String> = Vec::new();
 
         for line in lines.into_iter() {
-            let line: Vec<&str> = line
-                .split(if line.contains(",") {","} else {""}) // old room format?
+            let comma_separated = line.contains(","); // old room format?
+            let mut line: Vec<&str> = line
+                .split(if comma_separated {","} else {""})
                 .collect();
 
+            if ! comma_separated { line = line[1..].to_owned(); }
+            let line = line[..16].to_owned();
+
             for tile_id in line {
                 tiles.push(tile_id.to_string());
             }
@@ -136,9 +140,16 @@ impl Room {
         let sqrt = (self.tiles.len() as f64).sqrt() as usize; // 8 for SD, 16 for HD
         for line in self.tiles.chunks(sqrt) {
             for tile in line {
-                tiles.push_str(&format!("{},", tile));
+                tiles.push_str(tile);
+                if room_format == RoomFormat::CommaSeparated {
+                    tiles.push(',');
+                }
             }
-            tiles.pop(); // remove trailing comma
+
+            if room_format == RoomFormat::CommaSeparated {
+                tiles.pop(); // remove trailing comma
+            }
+
             tiles.push_str("\n");
         }
         tiles.pop(); // remove trailing newline