lmno: Add a new method to create a game with a specific ID value

[lmno-server] / lmno.js

diff --git a/lmno.js b/lmno.js
index 0db678957f0d0e09717fd9e6257d5c3d57189dff..b971bcb6332e4292fa8848b3325461307ac4b18c 100644 (file)
--- a/lmno.js
+++ b/lmno.js
@@ -59,14 +59,21 @@ njx.addFilter('active', function(list) {
   if (list)
     return list.filter(e => e.active === true);
   else
-    return null;
+    return [];
 });
 
 njx.addFilter('idle', function(list) {
   if (list)
     return list.filter(e => e.active === false);
   else
-    return null;
+    return [];
+});
+
+njx.addFilter('map_prop', function(list, prop) {
+  if (list)
+    return list.map(e => e[prop]);
+  else
+    return [];
 });
 
 /* Load each of our game mini-apps.
@@ -122,10 +129,9 @@ class LMNO {
     return [...Array(4)].map(() => LMNO.letters.charAt(Math.floor(Math.random() * LMNO.letters.length))).join('');
   }
 
-  create_game(engine_name) {
-    do {
-      var id = this.generate_id();
-    } while (id in this.games);
+  create_game_with_id(engine_name, id) {
+    if (this.games[id])
+      return null;
 
     const engine = engines[engine_name];
 
@@ -135,6 +141,14 @@ class LMNO {
 
     return game;
   }
+
+  create_game(engine_name) {
+    do {
+      var id = this.generate_id();
+    } while (id in this.games);
+
+    return this.create_game_with_id(engine_name, id);
+  }
 }
 
 /* Some letters we don't use in our IDs: