Destroyers

robot.js

var mainTank= {};
var cloneTank= {};
var curTank= {};


var turnStep = 40;
var rotateStep = 15;
var goStep = 15;

function updateTank(robot)
{
  getCurTank( robot);
  curTank.id= robot.id;
  curTank.parentId= robot.parentId;
  curTank.position= robot.position;
  setCurTank( robot);
}

function getCurTank(robot)
{
  if ( robot.parentId)
    curTank= mainTank;
  else
    curTank= cloneTank;
}

function setCurTank(robot)
{
  if ( robot.parentId)
    mainTank= curTank;
  else
    cloneTank= curTank;
}
//FightCode can only understand your robot
//if its class is called Robot
var Robot = function(robot) {
  mainTank = this;
  
  robot.clone();
  robot.turn(90);
  robot.back(50);  
};

Robot.prototype.onIdle = function(ev) {
    var robot = ev.robot;
  
  	if ( robot.gunCoolDownTime > 0 )
    {
      robot.turn(10);
      robot.ahead(10);
    } 
  	else  
    {       
      robot.listen('onRobotCollision');
  		robot.listen('onHitByBullet');
   		robot.listen('onWallCollision');
  		getCurTank( robot);
  		curTank.is_firing= false;
    	robot.rotateCannon(rotateStep);
      robot.ahead(10);
    }
};

Robot.prototype.onScannedRobot = function(ev) {
    var robot = ev.robot;
  	var target = ev.scannedRobot;

  	if( target.parentId != robot.id
       && target.id != robot.parentId)
    {
      	robot.ignore('onRobotCollision');
  			robot.ignore('onHitByBullet');
      	robot.ignore('onWallCollision');
      	updateTank( robot);
      	curTank.is_firing= true;
      	setCurTank( robot);
    		robot.fire();
      
      	if( target.angle < 10)
        {
          robot.turn(30);
      		robot.rotateCannon(-50);
          robot.ahead();
        }
      	else if( target.angle > 170)
        {
          robot.turn(30);
      		robot.rotateCannon(-50);
          robot.ahead();
        }
      	else
      	{
      		robot.rotateCannon(-20);
    			robot.ahead(10);   
        }
    }
  	else
    {         
    	robot.cannonRotate(10);
      getCurTank( robot);
      if( !curTank.is_firing)             
    		robot.cannonRotate(-10);
    }
};

Robot.prototype.onRobotCollision = function(ev) {
    var robot = ev.robot;
  	var target = ev.collidedRobot;
  
    if( target.parentId == robot.id)
    {
      robot.back(50);
      robot.turn(ev.bearing);
    }
  	else if( target.id == robot.parentId)
    {                
      robot.back(100);
      robot.turn(-ev.bearing);
    }
  	else
    {
    	robot.rotateCannon(-target.cannonAngle-5);
      robot.fire();
    }             
};

Robot.prototype.onWallCollision = function(ev) {
    var robot = ev.robot;
  	robot.ignore('onHitByBullet');
  	robot.back(30);
    robot.turn(90-ev.bearing);
    robot.rotateCannon(ev.bearing-90);
  	robot.listen('onHitByBullet');
};

Robot.prototype.onHitByBullet = function(ev) {
    var robot = ev.robot;
  	var targetAngle= ev.bearing+robot.cannonRelativeAngle;
 
  	robot.ignore('onHitByBullet');
  
  	getCurTank(robot);
  	if( curTank.is_firing)
    {
  		robot.listen('onHitByBullet');
      return;
    }
  
  	robot.stop();
  	if((ev.bulletBearing < 10)
       || (ev.bearing > 170))
      robot.turn(20);
    robot.rotateCannon(targetAngle);
    robot.ahead(50);
  
  	robot.listen('onHitByBullet');
};