Fixes issue #220

src/main/js/modules/at.js

@@ -47,7 +47,15 @@ at('06:00', wakeup, null, false);
 ```
 
 ***/
+var SECOND = 1000;
+var POLLING_INTERVAL = 3 * SECOND; // this is probably precise enough 
+
 function at(time24hr, callback, pWorlds, repeat) {
+  if (arguments.length === 0){
+    // TODO: Document this behaviour
+    console.log(tasksToString());
+    return;
+  }
   var timeParts = time24hr.split( ':' );
   var timeMins = (timeParts[0] * 60) + (timeParts[1] * 1);
   if (!pWorlds ||  pWorlds === undefined ) {
@@ -61,6 +69,21 @@ function at(time24hr, callback, pWorlds, repeat) {
   });
 };
 var atTasks = {};
+
+function tasksToString(){
+  var result = '';
+  for (var world in atTasks){
+    result += 'world: ' + world +'\n';
+    for (var time in atTasks[world]){
+      var scheduledFuncs = atTasks[world][time];
+      for (var i = 0;i < scheduledFuncs.length; i++){
+	result += ' ' + time + ': ' + scheduledFuncs[i].constructor + '\n';
+      }
+    }
+    result += '(current world time: ' + utils.time24(world) + ')\n';
+  }
+  return result;
+}
 /*
  constructs a function which will be called every x ticks to 
  track the schedule for a given world
@@ -68,19 +91,26 @@ var atTasks = {};
 function atMonitorFactory(world){
   var worldName = ''+ world.name;
   var lastRun = null;
+
   return function atMonitorForWorld(){
     var timeMins = utils.time24(world);
     if (timeMins === lastRun){
       return;
     }
-    lastRun = timeMins;
+    if (lastRun === null ){
+      lastRun = timeMins - 1;
+    }else {
+      lastRun = lastRun % 1440;
+    }
     var worldSchedule = atTasks[worldName];
     if (!worldSchedule){
       return;
     }
-    var tasks = worldSchedule[timeMins];
+    while ( lastRun > timeMins ? (lastRun <= 1440) : ( lastRun < timeMins ) ){
+
+      var tasks = worldSchedule[lastRun++];
       if (!tasks){
-      return;
+	continue;
       }
       utils.foreach(tasks, function(task, i){
 	if (!task){
@@ -91,6 +121,7 @@ function atMonitorFactory(world){
 	  tasks[i] = null;
 	}
       });
+    }
   };
 }
 function atAddTask( timeMins, callback, world, repeat){
@@ -105,7 +136,7 @@ function atAddTask( timeMins, callback, world, repeat){
 }
 var atMonitors = [];
 function onLoadStartMonitor(event){
-  var monitor = setInterval( atMonitorFactory(event.world), 900);
+  var monitor = setInterval( atMonitorFactory(event.world), POLLING_INTERVAL);
   atMonitors.push( monitor );
 }
 if (__plugin.canary){