//******************************
// NAME:    Rhys Miller        *
// Program: Arduino Interupts  *
// Date:    April 9 2024       *
// Desc:    Jasey box game     *
//******************************

const int button1       = 8;  // button pin for player one
const int button2       = 12; // button pin for player two
const int button3       = 13; // button pin for player three
const int P1Led         = 11; // LED pin for player one
const int P2Led         = 10; // LED pin for player two
const int P3Led         = 9;  // LED pin for player three
const int resetIntb     = 2;  // button pin for reset game
const int continueGameb = 3;  // button pin for continue game
int continueGame        = 0;  // variable to track continue game method
int resetGame           = 0;  // variable to track reset game method
int P1Stopped           = 0;  // variable to track player one status
int P2Stopped           = 0;  // variable to track player two status
int P3Stopped           = 0;  // variable to track player three status

void setup() {
 
  // set pin modes for LEDs
  pinMode(P1Led, OUTPUT);
  pinMode(P2Led, OUTPUT);
  pinMode(P3Led, OUTPUT);

  // set pin modes for player buttons
  pinMode(button1, INPUT_PULLUP);
  pinMode(button2, INPUT_PULLUP);
  pinMode(button3, INPUT_PULLUP);

  // set pin modes for game operator 
  pinMode(resetIntb, INPUT_PULLUP);
  pinMode(continueGameb, INPUT_PULLUP);


  // setup interupts for game control
  attachInterrupt(digitalPinToInterrupt(continueGameb), continueInt, FALLING);
  attachInterrupt(digitalPinToInterrupt(resetIntb), resetInt, FALLING);
} // end setup

// main loop responsible for most game function
void loop() {

  if (resetGame == 1){                                   // reset game code
    resetGame = 0;
    analogWrite(P1Led, 0); 
    analogWrite(P2Led, 0);
    analogWrite(P3Led, 0);

  }
  if (digitalRead(button1) == LOW && P1Stopped == 0) { // button for P1
    P1Stopped = 1;
    buttonWasPressed(P1Led);

  }
  if (digitalRead(button2) == LOW && P2Stopped == 0) { // button for P2
    P2Stopped = 1;
    buttonWasPressed(P2Led);

  }
  if (digitalRead(button3) == LOW && P3Stopped == 0) { // button for P3
    P3Stopped = 1;
    buttonWasPressed(P3Led);
  }
} // end loop

// method used to light up the led according to which button was pressed. returns nothing
void buttonWasPressed(int ledToLightUp) {

  while (continueGame == 0 && resetGame == 0) {

    // fade curreent led up and down
    fadeUp (ledToLightUp);
    delay(5);
    fadeDown (ledToLightUp);
    delay(5);
  }
  analogWrite(ledToLightUp, 5); // Dims the LED after the loop
  continueGame = 0;             // Allows for another player to press a button         

}

// method used to fade up led, returns nothing
void fadeUp( int pinNumber){
  int level = 0;
  int bright = 5 ;
  while ( level <=255){
    analogWrite (pinNumber,level);
    level = level + bright;
    delay (10);
  }

}

// method used to fade down led, returns nothing
void fadeDown( int pinNumber){
  int level = 255;
  int bright = 5;
  while (level >= 0){
    analogWrite(pinNumber, level);
    level = level - bright;
    delay (10);
  }
}

// INTERUPT HANDERLERS BELOW ******************
void continueInt() {
  continueGame = 1;
}

void resetInt() {
  resetGame = 1;
  P1Stopped = 0;
  P2Stopped = 0;
  P3Stopped = 0;

}