DUMMYBOT

robot.js

//FightCode can only understand your robot
//if its class is called Robot
var Robot = function(robot) {

};

var radius = 100;

Robot.prototype.onIdle = function(ev) {
  var robot = ev.robot;
  var centerX = robot.arenaWidth / 2;
  var centerY = robot.arenaHeight / 2;
  var relX = centerX - robot.position.x;
  var relY = centerY - robot.position.y;
  var relAngle = Math.atan2(relY, relX)/Math.PI*180;
  
  if (relX > radius || relY > radius)
    robot.turn(relAngle - robot.angle + 90);
  else if (relX < radius * 1.1 || relY < radius * 1.1)
    robot.turn(relAngle - robot.angle + 180);
  
  robot.ahead(20);
  robot.rotateCannon(-robot.cannonRelativeAngle);
};

Robot.prototype.onScannedRobot = function(ev) {
  var robot = ev.robot;
  robot.fire();
};