AlinaNova21

var flee = require('flee');
function checkPath(pos1, pos2) {
  var path = pos1.findPathTo(pos2);
  if (!path.length) {
    return false;
  }
  return path[path.length - 1].x == pos2.x && path[path.length - 1].y == pos2.y;
}
function costCallbackIgnoreRamparts(roomName, cm) {
  var ramparts = Game.rooms[roomName].find(FIND_STRUCTURES, {filter: i => i.structureType == STRUCTURE_RAMPART || i.structureType == STRUCTURE_WALL});

AlinaNova21

PathFinder.use(true);
for (var i in Game.creeps) { 
  var creep = Game.creeps[i], source = undefined; 
  if (!creep.room) { 
    continue; 
  }
  if (creep.memory.sourceId) { 
    source = Game.getObjectById(creep.memory.sourceId); 
  } 
  if(!source) {