1 files changed, 18 insertions, 3 deletions
diff --git a/src/map.rs b/src/map.rs
index dd1fe1c6347e..6d279db468e3 100644
--- a/src/map.rs
+++ b/src/map.rs
@@ -1,6 +1,10 @@
 //! Implements a map graph and world logic
 
-use crate::data::{Link, Node};
+use crate::{
+    data::{Link, Node},
+    server::{Result, ServerErr},
+    wire::Response
+};
 use async_std::sync::Arc;
 use serde::{Deserialize, Serialize};
 use std::collections::BTreeMap;
@@ -11,7 +15,7 @@ use std::collections::BTreeMap;
 /// the map nodes are placed, how much spacing there is, etc.  All
 /// this information is encoded in the same structs because it's
 /// static, and just more convenient.
-#[derive(Serialize, Deserialize)]
+#[derive(Default, Serialize, Deserialize)]
 pub struct Map {
     /// Node IDs mapped to node objects
     nodes: BTreeMap<u16, Arc<Node>>,
@@ -19,4 +23,15 @@ pub struct Map {
     links: BTreeMap<u16, Arc<Link>>,
 }
 
-impl Map {}
+impl Map {
+    pub fn new() -> Arc<Self> {
+        Arc::new(Self::default())
+    }
+
+    pub fn update<F>(&mut self, cb: F) -> Result<Response>
+    where
+        F: Fn(&mut Map) -> Result<Response>,
+    {
+        unimplemented!()
+    }
+}