take room out of position struct as they're really separate

src/main.rs

@@ -33,7 +33,6 @@ struct Tile {
 
 #[derive(Debug, Eq, PartialEq, Hash)]
 struct Position {
-    room: String, // id. is room id int or base36 string?
     x: u8,
     y: u8,
 }
@@ -50,6 +49,7 @@ struct Sprite {
     name: Option<String>,
     animation_frames: Vec<Image>,
     dialogue: Option<String>, /// dialogue id
+    room: String, /// room id
     position: Position,
 }
 
@@ -57,6 +57,7 @@ struct Sprite {
 #[derive(Debug, Eq, PartialEq)]
 struct Avatar {
     animation_frames: Vec<Image>,
+    room: String, /// room id
     position: Position,
 }
 
@@ -419,33 +420,31 @@ fn test_palette_from_string_no_name() {
 }
 
 fn position_from_string(string: String) -> Position {
-    // e.g. "0 2,5"
-    let room_xy: Vec<&str> = string.split(' ').collect();
-    let xy: Vec<&str> = room_xy[1].split(',').collect();
-    let room = room_xy[0].to_string();
+    // e.g. "2,5"
+    let xy: Vec<&str> = string.split(',').collect();
     let x = xy[0].parse().unwrap();
     let y = xy[1].parse().unwrap();
 
-    Position {room, x, y}
+    Position {x, y}
 }
 
 #[test]
 fn test_position_from_string() {
     assert_eq!(
-        position_from_string("5 4,12".to_string()),
-        Position { room: "5".to_string(), x: 4, y: 12 }
+        position_from_string("4,12".to_string()),
+        Position { x: 4, y: 12 }
     )
 }
 
 fn position_to_string(position: Position) -> String {
-    format!("{} {},{}", position.room, position.x, position.y)
+    format!("{},{}", position.x, position.y)
 }
 
 #[test]
 fn test_position_to_string() {
     assert_eq!(
-        position_to_string(Position { room: "5".to_string(), x: 4, y: 12 }),
-        "5 4,12".to_string()
+        position_to_string(Position { x: 4, y: 12 }),
+        "4,12".to_string()
     )
 }
 
@@ -455,6 +454,7 @@ fn sprite_from_string(string: String) -> Sprite {
     let id = lines[0].replace("SPR ", "");
     let mut name = None;
     let mut dialogue = None;
+    let mut room: Option<String> = None;
     let mut position: Option<Position> = None;
 
     for _ in 0..3 {
@@ -465,25 +465,26 @@ fn sprite_from_string(string: String) -> Sprite {
         } else if last_line.starts_with("DLG") {
             dialogue = Some(last_line.replace("DLG ", "").to_string());
         } else if last_line.starts_with("POS") {
-            position = Some(position_from_string(
-                last_line.replace("POS ", "").to_string()
-            ));
+            let last_line = last_line.replace("POS ", "");
+            let room_position: Vec<&str> = last_line.split(' ').collect();
+            room     = Some(room_position[0].to_string());
+            position = Some(position_from_string(room_position[1].to_string()));
         } else {
             lines.push(last_line); break;
         }
     }
 
+    let room = room.unwrap();
     let position = position.unwrap();
 
     // todo dedupe
     let animation_frames = lines[1..].join("");
-    // print!("{}", animation_frames);
     let animation_frames: Vec<&str> = animation_frames.split("\n>\n").collect();
     let animation_frames: Vec<Image> = animation_frames.iter().map(|&frame| {
         image_from_string(frame.to_string())
     }).collect();
 
-    Sprite { id, name, animation_frames, dialogue, position }
+    Sprite { id, name, animation_frames, dialogue, room, position }
 }
 
 #[test]