Current script (thx th_pion for base)

github.com/thPion/Screeps-Nooby-Guide

src/main.js

@@ -0,0 +1,35 @@
+// import modules
+require('prototype.creep');
+require('prototype.tower');
+require('prototype.spawn');
+
+module.exports.loop = function() {
+    // check for memory entries of died creeps by iterating over Memory.creeps
+    for (let name in Memory.creeps) {
+        // and checking if the creep is still alive
+        if (Game.creeps[name] == undefined) {
+            // if not, delete the memory entry
+            delete Memory.creeps[name];
+        }
+    }
+
+    // for each creeps
+    for (let name in Game.creeps) {
+        // run creep logic
+        Game.creeps[name].runRole();
+    }
+
+    // find all towers
+    var towers = _.filter(Game.structures, s => s.structureType == STRUCTURE_TOWER);
+    // for each tower
+    for (let tower of towers) {
+        // run tower logic
+        tower.defend();
+    }
+
+    // for each spawn
+    for (let spawnName in Game.spawns) {
+        // run spawn logic
+        Game.spawns[spawnName].spawnCreepsIfNecessary();
+    }
+};