// Here instead of just togging on/off, we will toggle between these modes:
// off, on, brigher, brightest, rave

// Define output pins for RGB LED
const int RED_PIN = 9;
const int GREEN_PIN = 10;
const int BLUE_PIN = 11;

// Possible states:
//    0 = off
//    1 = on
//    2 = brighter
//    3 = brightest
//    4 = rave
int lastLEDState = 0;

void setup()
{
  pinMode(7, INPUT);    // Set up the pushbutton pin to be an input:
  pinMode(13, OUTPUT);  // Set up the LED pin to be an output:
  pinMode(RED_PIN, OUTPUT);
  pinMode(GREEN_PIN, OUTPUT);
  pinMode(BLUE_PIN, OUTPUT);

  Serial.begin(9600);
}

void loop()
{
  int buttonState;
  int ledState;

  buttonState = digitalRead(7);

  if ( (buttonState == LOW) )
  {
    switch (lastLEDState) {
      case 0: // turn it off
        digitalWrite(BLUE_PIN, LOW);
        Serial.println("analogWrite LOW");
        break;
      case 1: // bright
        analogWrite(BLUE_PIN, 63);
        Serial.println("analogWrite 63");
        break;
      case 2: // brighter
        analogWrite(BLUE_PIN, 127);
        Serial.println("analogWrite 127");
        break;
      case 3: // brightest
        analogWrite(BLUE_PIN, 254);
        Serial.println("analogWrite 254");
        break;
      case 4: // multicolor
        Serial.println("RAVE!");
        digitalWrite(BLUE_PIN, LOW);
        rave();
        break;
    }
    lastLEDState = increment();
  }

  delay(250); // Slow the loop down a bit so we don't register a press multiple times
}

// int function since we're returning a value
int increment()
{
  // Using a switch since simply adding 1 would increment it indefinitely
  // We only have 4 or 5 cases so not a big hassle.
  switch (lastLEDState) {
    case 0:
      return 1;
      Serial.println("Setting lastLEDState to 1");
      break;
    case 1:
      return 2;
      Serial.println("Setting lastLEDState to 2");
      break;
    case 2:
      return 3;
      Serial.println("Setting lastLEDState to 3");
      break;
    case 3:
      return 4;
      Serial.println("Setting lastLEDState to 4");
      break;
    case 4:
      return 0;
      Serial.println("Setting lastLEDState to 0");
      break;
    }
}

void rave()
{
  // This was taken from Circuit_3.  Don't know everything about the color ranges.
  // Instead of looping from 0 to 786, we just take random to make it more rave'y
  // and we analogWrite the colors for as long as the button is not pressed.
  //
  // At the end we set all colors to 0 to turn the LED off, otherwise it would be
  // on along with the main single color LED
  
  int x = 0, buttonState = HIGH;

  // Need a delay so that this function wouldn't quit immediately.
  delay(200);

  while ( buttonState == HIGH )
  {
    int color = random(768);

    int redIntensity;
    int greenIntensity;
    int blueIntensity;

    if (color <= 255) {
      redIntensity = 255 - color;    // red goes from on to off
      greenIntensity = color;        // green goes from off to on
      blueIntensity = 0;             // blue is always off
    }
    else if (color <= 511) {
      redIntensity = 0;                     // red is always off
      greenIntensity = 255 - (color - 256); // green on to off
      blueIntensity = (color - 256);        // blue off to on
    }
    else {
      redIntensity = (color - 512);         // red off to on
      greenIntensity = 0;                   // green is always off
      blueIntensity = 255 - (color - 512);  // blue on to off
    }

    analogWrite(RED_PIN, redIntensity);
    analogWrite(BLUE_PIN, blueIntensity);
    analogWrite(GREEN_PIN, greenIntensity);

    // slow the color changes down a bit, but in a random manner
    int dTime = random(10,200);
    delay(dTime);
    
    buttonState = digitalRead(7);
  }

  // Button pressed, we need to quit this sub, so turn off RGB LED
  analogWrite(RED_PIN, 0);
  analogWrite(BLUE_PIN, 0);
  analogWrite(GREEN_PIN, 0);
}

// Here instead of just togging on/off, we will toggle between these modes:
// off, on, brigher, brightest, rave

// Define output pins for RGB LED
const int RED_PIN = 9;
const int GREEN_PIN = 10;
const int BLUE_PIN = 11;

// Possible states:
// 0 = off
// 1 = on
// 2 = brighter
// 3 = brightest
// 4 = rave
int lastLEDState = 0;

void setup()
{
pinMode(7, INPUT); // Set up the pushbutton pin to be an input:
pinMode(13, OUTPUT); // Set up the LED pin to be an output:
pinMode(RED_PIN, OUTPUT);
pinMode(GREEN_PIN, OUTPUT);
pinMode(BLUE_PIN, OUTPUT);

Serial.begin(9600);
}

void loop()
{
int buttonState;
int ledState;

buttonState = digitalRead(7);

if ( (buttonState == LOW) )
{
switch (lastLEDState) {
case 0: // turn it off
digitalWrite(BLUE_PIN, LOW);
Serial.println("analogWrite LOW");
break;
case 1: // bright
analogWrite(BLUE_PIN, 63);
Serial.println("analogWrite 63");
break;
case 2: // brighter
analogWrite(BLUE_PIN, 127);
Serial.println("analogWrite 127");
break;
case 3: // brightest
analogWrite(BLUE_PIN, 254);
Serial.println("analogWrite 254");
break;
case 4: // multicolor
Serial.println("RAVE!");
digitalWrite(BLUE_PIN, LOW);
rave();
break;
}
lastLEDState = increment();
}

delay(250); // Slow the loop down a bit so we don't register a press multiple times
}

// int function since we're returning a value
int increment()
{
// Using a switch since simply adding 1 would increment it indefinitely
// We only have 4 or 5 cases so not a big hassle.
switch (lastLEDState) {
case 0:
return 1;
Serial.println("Setting lastLEDState to 1");
break;
case 1:
return 2;
Serial.println("Setting lastLEDState to 2");
break;
case 2:
return 3;
Serial.println("Setting lastLEDState to 3");
break;
case 3:
return 4;
Serial.println("Setting lastLEDState to 4");
break;
case 4:
return 0;
Serial.println("Setting lastLEDState to 0");
break;
}
}

void rave()
{
// This was taken from Circuit_3. Don't know everything about the color ranges.
// Instead of looping from 0 to 786, we just take random to make it more rave'y
// and we analogWrite the colors for as long as the button is not pressed.
//
// At the end we set all colors to 0 to turn the LED off, otherwise it would be
// on along with the main single color LED

int x = 0, buttonState = HIGH;

// Need a delay so that this function wouldn't quit immediately.
delay(200);

while ( buttonState == HIGH )
{
int color = random(768);

int redIntensity;
int greenIntensity;
int blueIntensity;

if (color <= 255) {
redIntensity = 255 - color; // red goes from on to off
greenIntensity = color; // green goes from off to on
blueIntensity = 0; // blue is always off
}
else if (color <= 511) {
redIntensity = 0; // red is always off
greenIntensity = 255 - (color - 256); // green on to off
blueIntensity = (color - 256); // blue off to on
}
else {
redIntensity = (color - 512); // red off to on
greenIntensity = 0; // green is always off
blueIntensity = 255 - (color - 512); // blue on to off
}

analogWrite(RED_PIN, redIntensity);
analogWrite(BLUE_PIN, blueIntensity);
analogWrite(GREEN_PIN, greenIntensity);

// slow the color changes down a bit, but in a random manner
int dTime = random(10,200);
delay(dTime);

buttonState = digitalRead(7);
}

// Button pressed, we need to quit this sub, so turn off RGB LED
analogWrite(RED_PIN, 0);
analogWrite(BLUE_PIN, 0);
analogWrite(GREEN_PIN, 0);
}