implement optional name for avatar

src/avatar.rs

@@ -4,6 +4,7 @@ use crate::{AnimationFrames, Image, Position, optional_data_line, ToBase36, from
 #[derive(Debug, Eq, PartialEq)]
 pub struct Avatar {
     pub animation_frames: Vec<Image>,
+    pub name: Option<String>,
     pub room_id: u64,
     pub position: Position,
     pub colour_id: Option<u64>,
@@ -24,6 +25,7 @@ impl From<String> for Avatar {
         let string = string.replace("SPR A\n", "");
         let mut lines: Vec<&str> = string.lines().collect();
 
+        let mut name: Option<String> = None;
         let mut room_id: Option<u64> = None;
         let mut position: Option<Position> = None;
         let mut colour_id: Option<u64> = None;
@@ -41,6 +43,8 @@ impl From<String> for Avatar {
                 }
 
                 position = Some(Position::from(room_pos[1].to_string()));
+            } else if last_line.starts_with("NAME") {
+                name = Some(last_line.replace("NAME ", ""));
             } else if last_line.starts_with("COL") {
                 colour_id = Some(last_line.replace("COL ", "").parse().unwrap());
             } else {
@@ -58,7 +62,7 @@ impl From<String> for Avatar {
             Image::from(frame.to_string())
         }).collect();
 
-        Avatar { animation_frames, room_id, position , colour_id }
+        Avatar { animation_frames, name, room_id, position , colour_id }
     }
 }
 
@@ -66,8 +70,9 @@ impl ToString for Avatar {
     #[inline]
     fn to_string(&self) -> String {
         format!(
-            "SPR A\n{}{}{}",
+            "SPR A\n{}{}{}{}",
             self.animation_frames.to_string(),
+            optional_data_line("NAME", self.name.as_ref()),
             self.room_position_line(),
             self.colour_line(),
         )

src/mock.rs

@@ -62,6 +62,7 @@ pub fn avatar() -> Avatar {
                 ]
             },
         ],
+        name: None,
         room_id: 0,
         position: Position { x: 2, y: 5 },
         colour_id: None,
@@ -252,6 +253,7 @@ pub fn game_default() -> Game {
                     ]
                 }
             ],
+            name: None,
             room_id: 0,
             position: Position { x: 4, y: 4 },
             colour_id: None,