int led1 = 13; // middelste led
int led2 = 12; // links boven led
int led3 = 11; // links midden led
int led4 = 10; // links onder led
int led5 = 9; // rechts boven led
int led6 = 8; // rechts midden led
int led7 = 7; // rechts onder led

int buttonPin = 2;

//states

int buttonState;

// variabelen die veranderen.
int waardeRandom = 0;   // counter voor het aantal pushes
int lastButtonState = 0;     // vorige waarde van de knop
//

// functies toekennen
void setup(){
pinMode(led1,OUTPUT);
pinMode(led2,OUTPUT);
pinMode(led3,OUTPUT);
pinMode(led4,OUTPUT);
pinMode(led5,OUTPUT);
pinMode(led6,OUTPUT);
pinMode(led7,OUTPUT);

Serial.begin(9600);

pinMode(buttonPin, INPUT);
}

void loop(){

// buttenstate krijgt de waarde van de knop.
buttonState = digitalRead(buttonPin);

// alle ledjes uit.
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
digitalWrite(led4,LOW);
digitalWrite(led5,LOW);
digitalWrite(led6,LOW);
digitalWrite(led7,LOW);

if (buttonState != lastButtonState) {
    // als buttenState ingedrukt is, dan:
    if (buttonState == HIGH) {
      // waardeRandom een waarde van random geven tussen 1 tot en met 6.
      waardeRandom = random(1,7);

       // Animatie als de knop wordt ingedrukt.
       digitalWrite(led7,HIGH);
       delay(100);
       digitalWrite(led7,LOW);

       digitalWrite(led6,HIGH);
       delay(100);
       digitalWrite(led6,LOW);

       digitalWrite(led5,HIGH);
       delay(100);
       digitalWrite(led5,LOW);

       digitalWrite(led4,HIGH);
       delay(100);
       digitalWrite(led4,LOW);

       digitalWrite(led3,HIGH);
       delay(100);
       digitalWrite(led3,LOW);

       digitalWrite(led2,HIGH);
       delay(100);
       digitalWrite(led2,LOW);

       digitalWrite(led1,HIGH);
       delay(100);
       digitalWrite(led1,LOW);
       delay(50);
       digitalWrite(led1,HIGH);
       delay(50);
       digitalWrite(led1,LOW);
       delay(50);
       digitalWrite(led1,HIGH);
       delay(50);
       digitalWrite(led1,LOW);
       delay(50);
       digitalWrite(led1,HIGH);
       delay(50);
       digitalWrite(led1,LOW);
       delay(50);
       digitalWrite(led1,HIGH);
       delay(50);
       digitalWrite(led1,LOW);


       }

  }

lastButtonState = buttonState;


  // als de waarde van waardeRandom 1 is, dan middelste led laten branden
  if (waardeRandom == 1) {

    digitalWrite(led1,HIGH);
    digitalWrite(led2,LOW);
    digitalWrite(led3,LOW);
    digitalWrite(led4,LOW);
    digitalWrite(led5,LOW);
    digitalWrite(led6,LOW);
    digitalWrite(led7,LOW);
    }

  if (waardeRandom == 2) {

    digitalWrite(led1,LOW);
    digitalWrite(led2,LOW);
    digitalWrite(led3,LOW);
    digitalWrite(led4,HIGH);
    digitalWrite(led5,HIGH);
    digitalWrite(led6,LOW);
    digitalWrite(led7,LOW);
    }

  if (waardeRandom == 3) {

    digitalWrite(led1,HIGH);
    digitalWrite(led2,LOW);
    digitalWrite(led3,LOW);
    digitalWrite(led4,HIGH);
    digitalWrite(led5,HIGH);
    digitalWrite(led6,LOW);
    digitalWrite(led7,LOW);
    }

  if (waardeRandom == 4) {

    digitalWrite(led1,LOW);
    digitalWrite(led2,HIGH);
    digitalWrite(led3,LOW);
    digitalWrite(led4,HIGH);
    digitalWrite(led5,HIGH);
    digitalWrite(led6,LOW);
    digitalWrite(led7,HIGH);
    }

  if (waardeRandom == 5) {

    digitalWrite(led1,HIGH);
    digitalWrite(led2,HIGH);
    digitalWrite(led3,LOW);
    digitalWrite(led4,HIGH);
    digitalWrite(led5,HIGH);
    digitalWrite(led6,LOW);
    digitalWrite(led7,HIGH);
    }

  if (waardeRandom == 6) {

    digitalWrite(led1,LOW);
    digitalWrite(led2,HIGH);
    digitalWrite(led3,HIGH);
    digitalWrite(led4,HIGH);
    digitalWrite(led5,HIGH);
    digitalWrite(led6,HIGH);
    digitalWrite(led7,HIGH);
    }

}