#include "U8g2lib.h"
#include "Bounce2.h"

int Minimum = 1;
int Maximum = 7;
int TASTER = 7;

U8G2_SSD1306_128X64_NONAME_1_HW_I2C oled(U8G2_R0, U8X8_PIN_NONE);

// Bounce initialisieren
Bounce Wuerfel = Bounce();

int Radius = 5;

void setup()
{
  pinMode(TASTER, INPUT_PULLUP);

  // Taster Bounce zuordnen
  Wuerfel.attach(TASTER);
  Wuerfel.interval(20); 

  oled.begin();

  // Zufallsgenerator starten
  randomSeed(analogRead(A0));

  // Farbe weiß
  oled.setDrawColor(1);

  // Position 90 Grad
  oled.clearDisplay();
  oled.setFont(u8g2_font_t0_22_te);

  oled.enableUTF8Print();

  // Hinweis anzeigen
  oled.firstPage();
  do
  {
    oled.setCursor(10, 20);
    oled.print("Start");
    oled.setCursor(10, 40);
    oled.print("->");
    oled.setCursor(10, 60);
    oled.print("Taste");
  }
  while (oled.nextPage());
}

void Wuerfeln()
{
  int Zahl =  random(Minimum, Maximum);
  oled.firstPage();

  // Würfelaugen zeichnen
  // 1
  if (Zahl == 1)
  {
    do
    {
      oled.drawRFrame(0, 0, oled.getDisplayWidth(), oled.getDisplayHeight(), 5);
      oled.drawDisc(oled.getDisplayWidth() / 2, oled.getDisplayHeight() / 2, Radius);
    }
    while (oled.nextPage());
  }

  // 2
  if (Zahl == 2)
  {
    do
    {
      oled.drawRFrame(0, 0, oled.getDisplayWidth(), oled.getDisplayHeight(), 5);
      oled.drawDisc(14, 14, Radius);
      oled.drawDisc(oled.getDisplayWidth() - 15, oled.getDisplayHeight() - 15, Radius);

    }
    while (oled.nextPage());
  }

  // 3
  if (Zahl == 3)
  {
    do
    {
      oled.drawRFrame(0, 0, oled.getDisplayWidth(), oled.getDisplayHeight(), 5);
      oled.drawDisc(14, 14, Radius);
      oled.drawDisc(oled.getDisplayWidth() / 2, oled.getDisplayHeight() / 2, Radius);
      oled.drawDisc(oled.getDisplayWidth() - 15, oled.getDisplayHeight() - 15, Radius);
    }
    while (oled.nextPage());
  }

  // 4
  if (Zahl == 4)
  {
    do
    {
      oled.drawRFrame(0, 0, oled.getDisplayWidth(), oled.getDisplayHeight(), 5);
      oled.drawDisc(14, 14, Radius);
      oled.drawDisc(oled.getDisplayWidth() - 15, 14, Radius);
      oled.drawDisc(14, oled.getDisplayHeight() - 15, Radius);
      oled.drawDisc(oled.getDisplayWidth() - 15, oled.getDisplayHeight() - 15, Radius);
    }
    while (oled.nextPage());
  }

  // 5
  if (Zahl == 5)
  {
    do
    {
      oled.drawRFrame(0, 0, oled.getDisplayWidth(), oled.getDisplayHeight(), 5);
      oled.drawDisc(14, 14, Radius);
      oled.drawDisc(oled.getDisplayWidth() / 2, oled.getDisplayHeight() / 2, Radius);
      oled.drawDisc(oled.getDisplayWidth() - 15, 14, Radius);
      oled.drawDisc(14, oled.getDisplayHeight() - 15, Radius);
      oled.drawDisc(oled.getDisplayWidth() - 15, oled.getDisplayHeight() - 15, Radius);
    }
    while (oled.nextPage());
  }

  // 6
  if (Zahl == 6)
  {
    do
    {
      oled.drawRFrame(0, 0, oled.getDisplayWidth(), oled.getDisplayHeight(), 5);
      oled.drawDisc(14, 14, Radius);
      oled.drawDisc(oled.getDisplayWidth() / 2, 14, Radius);
      oled.drawDisc(oled.getDisplayWidth() - 15, 14, Radius);
      oled.drawDisc(14, oled.getDisplayHeight() - 15, Radius);
      oled.drawDisc(oled.getDisplayWidth() / 2, oled.getDisplayHeight() - 15, Radius);
      oled.drawDisc(oled.getDisplayWidth() - 15, oled.getDisplayHeight() - 15, Radius);
    }
    while (oled.nextPage());
  }
}

void loop()
{
  if (Wuerfel.update())
  {
    if (Wuerfel.read() == LOW)
    {
      // Würfeleffekt: Zufallszahlen in schneller Folge anzeigen
      for (int i = 0; i < 5; i++)
      {
        int Zahl =  random(Minimum, Maximum);

        Wuerfeln();
        delay(50);
      }
    }
  }
}