Drakim

var roleHarvester = {
    run: function(creep) {
        if(creep.carry.energy < creep.carryCapacity) {
            var sources = creep.room.find(FIND_SOURCES);
            if(creep.harvest(sources[0]) == ERR_NOT_IN_RANGE) {
                creep.moveTo(sources[0], {visualizePathStyle: {stroke: '#ffaa00'}});
            }
        }
        else {
            var targets = creep.room.find(FIND_STRUCTURES, {