// Make eyes snake.
function playSnakeEyes() {
 if (movMode == false) {
  if (randRange(0, 9) % 3 == 0 || randRange(0, 9) % 3 == 1) {// SNAKE
   var randX:Number = randRange(0, Stage.width);
   var randY:Number = randRange(0, Stage.height);
   var pos_right:Object = getPos(rightEye, {x:randX, y:randY});
   var pos_left:Object = getPos(leftEye, {x:randX, y:randY});
  } else if (randRange(0, 9) % 3 == 2 && snakeCount % 3 == 2) {// LONPARI
   var pos_right:Object = getPos(rightEye, {x:(rightEye.x - 10), y:rightEye.y});
   var pos_left:Object = getPos(leftEye, {x:(leftEye.x + 10), y:leftEye.y});
 }
 setEyes({right:pos_right, left:pos_left}); }
 snakeCount++;
}
 
// Generate randomized number.
function randRange(min:Number, max:Number):Number {
 var randomNum:Number = Math.floor(Math.random() * (max - min + 1)) + min;
 return randomNum;
}
 
// Set positions of instance for eyes.
function setEyes(pos:Object):Void {
 var movRate:Number = randRange(1, 9) / 10;
 rightEye_mc.onEnterFrame = function():Void  {
  var xRate:Number = (pos.right.x - this._x) * movRate;
  var yRate:Number = (pos.right.y - this._y) * movRate;
  this._x += xRate;
  this._y += yRate;
  if (Math.abs(xRate) < 0.1 && Math.abs(yRate) < 0.1) {
   this._x = pos.right.x;
   this._y = pos.right.y;
   delete this.onEnterFrame;
  }
 };
 leftEye_mc.onEnterFrame = function():Void  {
  var xRate:Number = (pos.left.x - this._x) * movRate;
  var yRate:Number = (pos.left.y - this._y) * movRate;
  this._x += xRate;
  this._y += yRate;
  if (Math.abs(xRate) < 0.1 && Math.abs(yRate) < 0.1) {
   this._x = pos.left.x;
   this._y = pos.left.y;
   delete this.onEnterFrame;
  }
 };
}
// Get positions of instance for eyes from position of mouse cursor.
function getPos(eye:Object, pts:Object):Object {
 var xdiff:Number = pts.x - eye.x;
 var ydiff:Number = pts.y - eye.y;
 var radius:Number = Math.min(Math.max(Math.sqrt(xdiff * xdiff + ydiff * ydiff) / distanceFromEye, 0), MAXeyeMovement);
 var angle:Number = Math.atan2(ydiff, xdiff);
 return {x:(Math.cos(angle) * radius * ovality + eye.x), y:(Math.sin(angle) * radius + eye.y)};
}