/*************************************************************************************************
                                      PROGRAMMINFO
**************************************************************************************************
  Funktion: Würfel

**************************************************************************************************
  Version: 27.04.2022
**************************************************************************************************
  Board: ESP32vn IoT UNO
**************************************************************************************************
  C++ Arduino IDE V1.8.19
**************************************************************************************************
  Einstellungen:
  https://dl.espressif.com/dl/package_esp32_index.json
  http://dan.drown.org/stm32duino/package_STM32duino_index.json
  https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json
*************************************************************************************************
**************************************************************************************************/
#include <Arduino.h>
#include <U8g2lib.h>

#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif

# include <Bounce2.h>
int Minimum = 1;
int Maximum = 7;
int TASTER = 27;
/*
  OLED initialisieren
  Controller: SH1106 oder SSD1306
  es wird der Page buffer mode verwendet
*/
// 1,3 Zoll SH1106
U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
// 0,96 Zoll SSD1306
// U8G2_SSD1306_128X64_NONAME_1_HW_I2C u8g2(U8G2_R0, /* reset=*/
unsigned long delayTime;
// Bounce initialisieren
Bounce Wuerfel = Bounce();

void setup()
{

  pinMode(TASTER, INPUT);
  // Taster Bounce zuordnen
  Wuerfel.attach(TASTER);
  Wuerfel.interval(20);
  u8g2.begin();
  // Zufallsgenerator starten
  randomSeed(A0);
  // Farbe weiß
  u8g2.setDrawColor(1);
  // Position 90 Grad
  u8g2.clearDisplay();
  u8g2.setFont(u8g2_font_t0_22_te);
  u8g2.setDisplayRotation(U8G2_R1);
  u8g2.setFlipMode(1);
  // Hinweis anzeigen
  u8g2.firstPage();
  do
  {
    u8g2.drawStr(2, 20, "Start");
    u8g2.drawStr(2, 50, "->");
    u8g2.drawStr(2, 80, "Taste");
  }
  while (u8g2.nextPage());
  u8g2.setDisplayRotation(U8G2_R0);
  u8g2.setFlipMode(1);
}

void Wuerfeln()
{
  int Zahl = random(Minimum, Maximum);
  u8g2.firstPage();
  // Würfelaugen zeichnen
  // 1
  if (Zahl == 1)
  {
    do
    {
      u8g2.drawRFrame(0, 0, 128, 64, 5);
      u8g2.drawDisc(60, 32, 8);
    }
    while (u8g2.nextPage());
  }
  // 2
  if (Zahl == 2)
  {
    do
    {
      u8g2.drawRFrame(0, 0, 128, 64, 5);
      u8g2.drawDisc(14, 14, 8);
      u8g2.drawDisc(112, 50, 8);
    }
    while (u8g2.nextPage());
  }
  // 3
  if (Zahl == 3)
  {
    do
    {
      u8g2.drawRFrame(0, 0, 128, 64, 5);
      u8g2.drawDisc(14, 14, 8);
      u8g2.drawDisc(60, 32, 8);
      u8g2.drawDisc(112, 50, 8);
    }
    while (u8g2.nextPage());
  }
  // 4
  if (Zahl == 4)
  {
    do
    {
      u8g2.drawRFrame(0, 0, 128, 64, 5);
      u8g2.drawDisc(14, 14, 8);


      u8g2.drawDisc(14, 50, 8);
      u8g2.drawDisc(112, 14, 8);
      u8g2.drawDisc(112, 50, 8);
    }
    while (u8g2.nextPage());
  }
  // 5
  if (Zahl == 5)
  {
    do
    {
      u8g2.drawRFrame(0, 0, 128, 64, 5);
      u8g2.drawDisc(14, 14, 8);
      u8g2.drawDisc(60, 32, 8);
      u8g2.drawDisc(112, 14, 8);
      u8g2.drawDisc(14, 50, 8);
      u8g2.drawDisc(112, 50, 8);
    }
    while (u8g2.nextPage());
  }
  // 6
  if (Zahl == 6)
  {
    do
    {
      u8g2.drawRFrame(0, 0, 128, 64, 5);
      u8g2.drawDisc(14, 14, 8);
      u8g2.drawDisc(60, 14, 8);
      u8g2.drawDisc(112, 14, 8);
      u8g2.drawDisc(14, 50, 8);
      u8g2.drawDisc(60, 50, 8);
      u8g2.drawDisc(112, 50, 8);
    }
    while (u8g2.nextPage());
  }
}
int ZufallsZahl()
{
  int Zahl = random(Minimum, Maximum);
  return Zahl;
}


void loop()
{
  if (Wuerfel.update())
  {
    if (Wuerfel.read() == LOW)
    {
      // Würfeleffekt: Zufallszahlen in schneller Folge anzeigen
      // bedingt durch den Page buffer mode nicht sehr schnell
      for (int i = 0; i < 5; i++)
      {
        int Zahl = random(Minimum, Maximum);
        Wuerfeln();
        delay(50);
      }
    }
  }
}