Multiple Wall Killer

robot.js

var Robot = function(robot) {
  
  robot.clone();
};

Robot.prototype.onIdle = function(ev) {
  ev.robot.back(30);
  
  robot.rotateCannon(180);
};

Robot.prototype.onScannedRobot = function(ev) {
  if(!ev.robot.parentId)  ev.robot.fire();
};

Robot.prototype.onWallCollision = function(ev) {
  ev.robot.ignore("onRobotCollision");
  ev.robot.ignore("onScannedRobot");
  ev.robot.turn(ev.bearing - 90);
  ev.robot.listen("onScannedRobot");
  ev.robot.listen("onRobotCollision");
};