// https://forum.arduino.cc/t/help-for-community-driven-masters-project/995395

const int buttonPin4 = 2;    // the number of the pushbutton pin
const int buttonPin3 = 3;
const int buttonPin2 = 4;
const int buttonPin1 = 5;

const int ledPin = 8;

// Variables will change:
int buttonState4;             // the current reading from the input pin
int lastButtonState4 = HIGH;   // the previous reading from the input pin
int buttonState3;
int lastButtonState3 = HIGH;
int buttonState2;
int lastButtonState2 = HIGH;
int buttonState1;
int lastButtonState1 = HIGH;

// the following variables are unsigned longs because the time, measured in
// milliseconds, will quickly become a bigger number than can be stored in an int.
unsigned long debounceDelay = 50;    // the debounce time; increase if the output flickers
unsigned long lastDebounceTime4 = 0;  // the last time the output pin was toggled
unsigned long lastDebounceTime3 = 0;
unsigned long lastDebounceTime2 = 0;
unsigned long lastDebounceTime1 = 0;

int x = 0;
long attacker;
long opponent;

void setup() {

  Serial.begin(9600);
  Serial.println("Hello Community Driven Thing!\n");

  pinMode(buttonPin4, INPUT_PULLUP);
  pinMode(buttonPin3, INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin1, INPUT_PULLUP);

  pinMode(ledPin, OUTPUT);

  lastButtonState4 = !digitalRead(buttonPin4);   // the previous reading from the input pin
  lastButtonState3 = !digitalRead(buttonPin3);
  lastButtonState2 = !digitalRead(buttonPin2);
  lastButtonState1 = !digitalRead(buttonPin1);
}

// roll ndice number of dice
unsigned char roll(unsigned char ndice)
{
  unsigned total = 0;

  for (unsigned char tt = 0; tt < ndice; tt++)
    total += random(6) + 1;
  
  return total;
}

void loop() {
  // read the state of the switch into a local variable:
  int reading4 = !digitalRead(buttonPin4);
  int reading3 = !digitalRead(buttonPin3);
  int reading2 = !digitalRead(buttonPin2);
  int reading1 = !digitalRead(buttonPin1);

  // check to see if you just pressed the button
  // (i.e. the input went from LOW to HIGH), and you've waited long enough
  // since the last press to ignore any noise:

  // If the switch changed, due to noise or pressing:
  if (reading4 != lastButtonState4) {
    // reset the debouncing timer
    lastDebounceTime4 = millis();
  }

  if (reading3 != lastButtonState3) {
    // reset the debouncing timer
    lastDebounceTime3 = millis();
  }

  if (reading2 != lastButtonState2) {
    // reset the debouncing timer
    lastDebounceTime2 = millis();
  }

  if (reading1 != lastButtonState1) {
    // reset the debouncing timer
    lastDebounceTime1 = millis();
  }

  if ((millis() - lastDebounceTime4) > debounceDelay) {
    // whatever the reading is at, it's been there for longer than the debounce
    // delay, so take it as the actual current state:

    // if the button state has changed:
    if (reading4 != buttonState4) {
      buttonState4 = reading4;

      // only toggle the LED if the new button state is HIGH
      if (buttonState4 == HIGH) {

        x++;
      // moved up to before x is used / needed
        if (x >= 2) {
          x = 0;
        }

//        Serial.print(x);
        if (x) {
          digitalWrite(ledPin, HIGH);
//          Serial.println(" so write HIGH");
        }
        else {
          digitalWrite(ledPin, LOW);
//          Serial.println(" so write LOW");
        }
      }
    }
  }

  // save the reading. Next time through the loop, it'll be the lastButtonState:
  lastButtonState4 = reading4;

  if (x == 0) {
    if ((millis() - lastDebounceTime3) > debounceDelay) {
      // whatever the reading is at, it's been there for longer than the debounce
      // delay, so take it as the actual current state:

      // if the button state has changed:
      if (reading3 != buttonState3) {
        buttonState3 = reading3;

        if (buttonState3 == HIGH) {
          attacker = roll(1);
          Serial.print("attacker: ");
          Serial.print(attacker);
          Serial.print(" Vs. ");
        }
      }
    }
    lastButtonState3 = reading3;

        if ((millis() - lastDebounceTime2) > debounceDelay) {
      // whatever the reading is at, it's been there for longer than the debounce
      // delay, so take it as the actual current state:

      // if the button state has changed:
      if (reading2 != buttonState2) {
        buttonState2 = reading2;

        if (buttonState2 == HIGH) {
          attacker = roll(2);
          Serial.print("attacker: ");
          Serial.print(attacker);
          Serial.print(" Vs. ");
        }
      }
    }
    lastButtonState2 = reading2;

        if ((millis() - lastDebounceTime1) > debounceDelay) {
      // whatever the reading is at, it's been there for longer than the debounce
      // delay, so take it as the actual current state:

      // if the button state has changed:
      if (reading1 != buttonState1) {
        buttonState1 = reading1;

        if (buttonState1 == HIGH) {
          attacker = roll(3);
          Serial.print("attacker: ");
          Serial.print(attacker);
          Serial.print(" Vs. ");
        }
      }
    }
    lastButtonState1 = reading1;
  }

    if (x == 1) {
    if ((millis() - lastDebounceTime3) > debounceDelay) {
      // whatever the reading is at, it's been there for longer than the debounce
      // delay, so take it as the actual current state:

      // if the button state has changed:
      if (reading3 != buttonState3) {
        buttonState3 = reading3;

        if (buttonState3 == HIGH) {
          opponent = roll(1);
          Serial.print("opponent: ");
          Serial.print(opponent);
          Serial.println();
        }
      }
    }
    lastButtonState3 = reading3;

        if ((millis() - lastDebounceTime2) > debounceDelay) {
      // whatever the reading is at, it's been there for longer than the debounce
      // delay, so take it as the actual current state:

      // if the button state has changed:
      if (reading2 != buttonState2) {
        buttonState2 = reading2;

        if (buttonState2 == HIGH) {
          opponent = roll(2);
          Serial.print("opponent: ");
          Serial.print(opponent);
          Serial.println();
        }
      }
    }
    lastButtonState2 = reading2;

        if ((millis() - lastDebounceTime1) > debounceDelay) {
      // whatever the reading is at, it's been there for longer than the debounce
      // delay, so take it as the actual current state:

      // if the button state has changed:
      if (reading1 != buttonState1) {
        buttonState1 = reading1;

        if (buttonState1 == HIGH) {
          opponent = roll(3);
          Serial.print("opponent: ");
          Serial.print(opponent);
          Serial.println();
        }
      }
    }
    lastButtonState1 = reading1;
  }
}