Basic setup new system.

ClassSpawn.js

@@ -0,0 +1,21 @@
+module.exports = {
+	setup: function () { StructureSpawn.prototype = _Spawn.prototype; }
+}
+
+
+class _Spawn extends StructureSpawn {
+
+	createHarvester() {
+		var body = [WORK, CARRY, MOVE];
+		this.createCreep(body, "harvester", Role.HARVESTER);
+	}
+
+	createCreep(body, name, role) {
+		if (this.memory.creepCounter == undefined) this.memory.creepCounter = 0;
+		const response = this.spawnCreep(body, name + ": " + this.memory.creepCounter, {
+			memory: { job: { role: role } }
+		});
+		if (response == OK) this.memory.creepCounter++;
+		return response;
+	}
+}