X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=lmno.js;h=569d33d620244371488a64bcdca10b8804602b72;hb=bf51534cfe9f8f1d90fd6df4ae590fdecdc2825e;hp=0db678957f0d0e09717fd9e6257d5c3d57189dff;hpb=3586642fb026f5caa5da24ec8a68862509f0d4d1;p=empires-server

diff --git a/lmno.js b/lmno.js
index 0db6789..569d33d 100644
--- 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.