functions for positions

src/main.rs

@@ -31,7 +31,7 @@ struct Tile {
     animation_frames: Vec<Image>,
 }
 
-#[derive(Eq, PartialEq, Hash)]
+#[derive(Debug, Eq, PartialEq, Hash)]
 struct Position {
     room: String, // id. is room id int or base36 string?
     x: u8,
@@ -407,6 +407,37 @@ fn test_palette_from_string_no_name() {
     assert_eq!(output, expected);
 }
 
+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();
+    let x = xy[0].parse().unwrap();
+    let y = xy[1].parse().unwrap();
+
+    Position {room, 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 }
+    )
+}
+
+fn position_to_string(position: Position) -> String {
+    format!("{} {},{}", position.room, 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()
+    )
+}
+
 // fn get_avatar(game: Game) -> Sprite {
 //     // get the sprite with an id of A
 // }