/* Sweep
 by BARRAGAN <http://barraganstudio.com>
 This example code is in the public domain.

 modified 8 Nov 2013
 by Scott Fitzgerald
 http://arduino.cc/en/Tutorial/Sweep
*/

#include <Servo.h>

Servo myservo;  // create servo object to control a servo
                // twelve servo objects can be created on most boards
int servoPin = 9;
int servoPos = 0;
int servoDelay = 15;
int servoStartPos = 0;
int servoEndPos = 87;

int buttonPin = 2;
int buttonState = 0;

boolean closing = false;
boolean opening = false;

void setup()
{
  pinMode(servoPin, OUTPUT);
  myservo.attach(servoPin);  // attaches the servo on pin 9 to the servo object
  pinMode(buttonPin, INPUT);

  servoPos = myservo.read();
  if (servoPos > servoStartPos){
    closing = true;
  } else if (servoPos > servoEndPos) {
    opening = true;
  }
}
void loop()
{
  if (closing == true) {

     servoPos = myservo.read();
     for (int pos = servoPos; pos >= servoStartPos; pos -= 1) {
       myservo.write(pos);
       delay(servoDelay);
     }
     closing = false;

  } else if (opening == true) {

    servoPos = myservo.read();
    for (int pos = servoPos; pos <= servoEndPos; pos += 1){
      myservo.write(pos);
      delay(servoDelay);
    }
    opening = false;

  } else {

    buttonState = digitalRead(buttonPin);
    if (buttonState == HIGH){
      if (targeting == true) {
        closing = true;
      } else {
        opening = true;
      }
    }
  }
}