/*
Vygeneruje sa náhodna farba na RGB diódu.
Napr. R - 200, G - 10, B 75.

Úlohou užívateľa je uhádnuť,
ktoré spektrum RGB svieti najviac a kliknút 
na príslušné tlačidlo.
*/

int rgbRed = 11;
int rgbGreen = 10;
int rgbBlue = 9;

int rgbRedRand = 0;
int rgbGreenRand = 0;
int rgbBlueRand = 0;

int btnRed = 7;
int btnGreen = 6;
int btnBlue = 5;

bool btnRedState = LOW;
bool btnGreenState = LOW;
bool btnBlueState = LOW;

int buzzer = 3;

bool active = HIGH;

String correct = "";



void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  randomSeed(analogRead(0));

  pinMode(rgbRed, OUTPUT);
  pinMode(rgbGreen, OUTPUT);
  pinMode(rgbBlue, OUTPUT);

  pinMode(btnRed, INPUT_PULLUP);
  pinMode(btnGreen, INPUT_PULLUP);
  pinMode(btnBlue, INPUT_PULLUP);

  pinMode(buzzer, OUTPUT);

  // Red
  rgbRedRand = random(0, 256);
  analogWrite(rgbRed, rgbRedRand);

  // Green
  rgbGreenRand = random(0, 256);
  analogWrite(rgbGreen, rgbGreenRand);

  // Blue
  rgbBlueRand = random(0, 256);
  analogWrite(rgbBlue, rgbBlueRand);

  if(rgbRedRand > rgbGreenRand && rgbRedRand > rgbBlueRand){
    correct = "red";
  }else if(rgbGreenRand > rgbRedRand && rgbGreenRand > rgbBlueRand){
    correct = "green";
  }else{
    correct = "blue";
  }

  while(true){
    if(digitalRead(btnRed) == LOW || 
      digitalRead(btnGreen) == LOW ||
      digitalRead(btnBlue) == LOW){
      Serial.println("n");
      if(correct == "red" && digitalRead(btnRed) == LOW){
        Serial.println("Correct. Red!");
        buzzIt(HIGH);
      }else if(correct == "green" && digitalRead(btnGreen) == LOW){
        Serial.println("Correct. Green!");
        buzzIt(HIGH);
      }else if(correct == "blue" && digitalRead(btnBlue) == LOW){
        Serial.println("Correct. Blue!");
        buzzIt(HIGH);
      }else{
        Serial.println("Incorrect.");
        buzzIt(LOW);
      }
    }
  }

}
 
void loop() {
  // put your main code here, to run repeatedly:
  
}

void buzzIt(bool success){
  if(success == HIGH){
    tone(buzzer, 200, 400);
    delay(200);
    tone(buzzer, 400, 400);
    delay(400);
    tone(buzzer, 600, 600);
    delay(600);
  }else{
    tone(buzzer, 200, 400);
    delay(400);
  }

}