// Egan Luis Tamara - 300367772 - ENGR 1190 midterm 1


#include <Servo.h> // including the servo library to enable us to use the servo 
const int buttonA = 2, buttonB = 12, buttonC = 8, buttonD = 7; // assigning the push button pins to a more readable name
const int greenLed = 10, redLed = 9, blueLed = 6, amberLed = 5; // assigning the led pins to a more readable name
Servo myServo; // declaring a servo object for the code to read our physical servo

int randomNum;

void blink(int led, int count) { 
  // a blink function for any specified led to streamline the code
  // function also features a "count" parameter to specify exactly how many times the led wants to be blinked
  
  for (int i = 0; i < count; i++) { // a for loop that loops however many times the "count" variable specifies
    digitalWrite(led, HIGH); // writes the specified led pin to be a logic HIGH, turning it on
    delay(150);
    digitalWrite(led, LOW); // writes the specified led pin to be a logic LOW, turning it off, creating the blink effect
    delay(150);
  }
  
}

void setup() {
// put your setup code here, to run once:
//setting all the buttons to be inputs
  pinMode(buttonA, INPUT);
  pinMode(buttonB, INPUT);
  pinMode(buttonC, INPUT);
  pinMode(buttonD, INPUT);

//setting all the led pins to be outputs
  pinMode(greenLed, OUTPUT);
  pinMode(redLed, OUTPUT);
  pinMode(blueLed, OUTPUT);
  pinMode(amberLed, OUTPUT);

  myServo.attach(11); // assigning pin number 11 to the servo object
  myServo.write(0); // initializing the servo heading to be 0 to start

  randomSeed(analogRead(0)); // setting a randomSeed for the button B action using an empty analog pin as its seed
}

void loop() {
  // put your main code here, to run repeatedly:
  while (digitalRead(buttonA) == HIGH) { // while button A is pressed then the lights will blink continuously
      
      // calling the blink function to blink the specified LED two times each, in sequential order,
      // and then reversing the order

      blink(greenLed, 2);  // blink the green LED twice

      blink(redLed, 2);    // blink the red LED twice

      blink(blueLed, 2);   // blink the blue LED twice

      blink(amberLed, 2);  // blink the amber LED twice

      blink(blueLed, 2);   // blink the blue LED twice

      blink(redLed, 2);    // blink the red LED twice

  }

  while (digitalRead(buttonB) == HIGH) { // while button B is pressed then a random LED will blink twice

    randomNum = random(1,5); //assign the randomNum integer to be an number between 1 and 4

  if (randomNum == 1) { // if the random number is 1, then blink the green LED twice
    blink(greenLed, 2);
    delay(100); // putting the delay in to diffrentiate the blink iterations
  }
  else if (randomNum == 2) { // if the random number is 2, then blink the red LED twice
    blink(redLed, 2);
    delay(100);
  }
  else if(randomNum == 3) { // if the random number is 3, then blink the blue LED twice
    blink (blueLed, 2);
    delay(100);
  }
  else {
    blink (amberLed, 2); // if the random number is not any of the above, in other words 4, then blink the amber LED twice
    delay(100);
  }

  }

  while (digitalRead(buttonC) == HIGH) { 
    // while button c is pressed, oscillate the servo back and forth between 9 degrees and 100 degrees
    
    myServo.write(9); // writing the servo angle to be 9 degrees
    delay(400); // setting a reasonable delay between angle writing to allow the servos to actually move
    myServo.write(100); // writing the servo angle to be 100 degrees
    delay(400);

  }

  while (digitalRead(buttonD) == HIGH) {
// while button D is pressed, excecute the following complication motion:

// rotates the servo to 25 degrees, and then blinks the blue LED twice
    myServo.write(25); 
    delay(100);
    blink(blueLed, 2);
    delay(100);

// rotates the servo to 81 degrees, and then blinks the green LED twice
    myServo.write(81); 
    delay(100);
    blink(greenLed, 3);
    delay(100);

// rotates the servo to 144 degrees, and then blinks the red and amber LEDS sequentially two times
    myServo.write(144); 
    delay(100);
    blink(redLed, 1);
    delay(100);
    blink(amberLed,1);
    delay(100);
    blink(redLed, 1);
    delay(100);
    blink(amberLed,1);
    delay(100);
  }

}