#include <OneButton.h>

#include <OneButton.h>

#define LEDrot 3
#define LEDgruen 5
#define LEDblau 6
#define Taster 8

int TasterZustand = 1;

OneButton Taster1(Taster, false);

void setup()
{
  pinMode(LEDblau, OUTPUT);
  pinMode(LEDgruen, OUTPUT);
  pinMode(LEDrot, OUTPUT);
  pinMode(Taster, INPUT);

  Taster1.attachClick(Ein_Click);
}
void loop()
{
  Taster1.tick();

  switch (TasterZustand)
  {
  case 1:
    Rot();
    break;
  case 2:
    Gruen();
    break;
  case 3:
    Blau();
    break;
  case 4:
    Orange();
    break;
  case 5:
    Pink();
    break;
  case 6:
    Weiss();
    break;
  case 7:
    TestFarbe();
    break;
  case 8:
    FarbWechsel();
    break;
  case 9:
    LichtAus();
    break;
  default:
    break;
  }
}

void Ein_Click()
{
  TasterZustand++;
  if (TasterZustand > 9)
  {
    TasterZustand = 1;
  }
}

void Rot()
{
  analogWrite(LEDrot, 255);
  analogWrite(LEDgruen,  0);
  analogWrite(LEDblau,  0);
}

void Gruen()
{
  analogWrite(LEDrot, 0);
  analogWrite(LEDgruen, 255);
  analogWrite(LEDblau, 0);
}
void Blau()
{
  analogWrite(LEDrot, 0);
  analogWrite(LEDgruen, 0);
  analogWrite(LEDblau, 255);
}

void Orange()
{
  analogWrite(LEDrot, 255);
  analogWrite(LEDgruen, 180);
  analogWrite(LEDblau, 0);
}

void Pink()
{
  analogWrite(LEDrot, 255);
  analogWrite(LEDgruen, 0);
  analogWrite(LEDblau, 255);
}

void Weiss()
{
  analogWrite(LEDrot, 255);
  analogWrite(LEDgruen, 255);
  analogWrite(LEDblau, 255);
}

void TestFarbe()
{
  analogWrite(LEDrot, 0);
  analogWrite(LEDgruen,  100);
  analogWrite(LEDblau,  125);
}
void FarbWechsel()
{
  while (TasterZustand == 8)
  {
    //rot zu gruen

    for (int i = 0; i < 255; i++)
    {
      analogWrite(LEDrot, 255 - i);
      analogWrite(LEDgruen, i);
      analogWrite(LEDblau, 0);
      Taster1.tick();
      if (TasterZustand != 8)
      {
        return;
      }

      delay(50);
    }

    //gruen zu blau

    for (int i = 0; i < 255; i++)
    {
      analogWrite(LEDrot, 0);
      analogWrite(LEDgruen, 255- i);
      analogWrite(LEDblau, i);
      Taster1.tick();
      if (TasterZustand != 8)
      {
        return;
      }

      delay(50);
    }

    //blau zu rot

    for (int i = 0; i < 255; i++)
    {
      analogWrite(LEDrot, i);
      analogWrite(LEDgruen, 0);
      analogWrite(LEDblau, 255 - i);
      Taster1.tick();
      if (TasterZustand != 8)
      {
        return;
      }

      delay(50);
    }
  }
}

void LichtAus()
{
  analogWrite(LEDrot, 0);
  analogWrite(LEDgruen, 0);
  analogWrite(LEDblau, 0);
}