/*
*****************************************************************************************************
*****************************************************************************************************
**  Name: Liam dutot                                                                               **
**  Project Name: Jasey game                                                                       **
**  Date:2024-10-07                                                                                **
**  Description:    A game with three players, each player has an assigned LED. When a player      **
**  presses their color coded button, their LED lights up, and the other players can't press thei  **
**  buttons until the "continue" button is pressed. the "reset" button restarts the game           **
**  turning off all LEDs.                                                                          **
*****************************************************************************************************
*****************************************************************************************************
*/



const int button1     = 4;          // button 1 connected to pin 4 
const int button2     = 5;          // button 2 connected to pin 5 
const int button3     = 7;          // button 3 connected to pin 7 

const int P1Led       = 9;          // LED for P1 
const int P2Led       = 10;         // LED for P2 
const int P3Led       = 6;          // LED for P3 

const int speaker     = 8;          // Speaker connected to pin 8 

const int contInt     = 2;          // Cont button interrupt on pin 2 
const int resetInt    = 3;          // Rst button interrupt on pin 3 

int contGame          = 0;          // 0 = not pressed, 1 = pressed 
int resetGame         = 0;          // 0 = not pressed, 1 = pressed 
int P1Stopped         = 0;          // P1 status: 0 = not stopped, 1 = stopped
int P2Stopped         = 0;          // P2 status: 0 = not stopped, 1 = stopped
int P3Stopped         = 0;          // P3 status: 0 = not stopped, 1 = stopped

// Interrupt handler for continue button
void contInterrupt (){
  tone(speaker, 1000, 500);         //plays sound for 500ms
	contGame  = 1;                    //cont button pressed
}

void resetInterrupt() {
  tone(speaker, 1000, 500);         //plays sound for 500ms
	resetGame = 1;
  P1Stopped = 0;                    //p1 status stopped
  P2Stopped = 0;                    //p2 status stopped
  P3Stopped = 0;                    //p3 status stopped
}


void setup() {
  // Initialize buttons 
  pinMode(button1, INPUT_PULLUP);
  pinMode(button2, INPUT_PULLUP);
  pinMode(button3, INPUT_PULLUP);

  // Initialize LEDs
  pinMode(P1Led, OUTPUT);
  pinMode(P2Led, OUTPUT);
  pinMode(P3Led, OUTPUT);

  // Initialize speaker
  pinMode(speaker, OUTPUT);

  // Initialize interrupt buttons 
  pinMode(contInt, INPUT_PULLUP);
  pinMode(resetInt, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(contInt), contInterrupt, FALLING);  // Attach cont interrupt
  attachInterrupt(digitalPinToInterrupt(resetInt), resetInterrupt, FALLING);  // Attach rst interrupt
}

void loop() {
  // Check if P1 pressed the button and is not stopped
  if (digitalRead(button1) == 0 && P1Stopped == 0) {
    P1Stopped = 1;  //block p1 from doing anything
    buttPress(P1Led);
  }//end if()

  // Check if P2 pressed the button and is not stopped
  if (digitalRead(button2) == 0 && P2Stopped == 0) {
    P2Stopped = 1;  // Stop all players
    buttPress(P2Led);
  }//end if()

  // Check if P3 pressed the button and is not stopped
  if (digitalRead(button3) == 0 && P3Stopped == 0) {
    P3Stopped = 1;  // Stop all players
    buttPress(P3Led);
  }//end if()


  // Handle cont button press
  if (contGame == 1) {
    contGame = 0;  // Rst continue flag
  }//end if()

  if(resetGame == 1) {
    resetGame = 0;
	  analogWrite(P1Led, LOW);
    analogWrite(P2Led, LOW);
    analogWrite(P3Led, LOW);
  }//end if()

}


void buttPress(int ledNumber) {  
	while( contGame == 0   &&  resetGame == 0 ) {
	    fadeUp (ledNumber);
	    fadeDown(ledNumber);
  }
  analogWrite(ledNumber ,20);
  contGame = 0;

}

void fadeUp(int LedPin) {
  int increment = 5;     // Brightness increment
  int level = 0;         // Initial brightness level

  // Fade up loop
  while (level <= 255) {
    analogWrite(LedPin, level);  
    level = level + increment;      
    delay(10);                      
  }
}

void fadeDown(int LedPin) {
  int increment = 5;      // Brightness decrement
  int level = 255;        // Start at maximum brightness

  // Fade down loop
  while (level >= 0) {
    analogWrite(LedPin, level);  // Write the current brightness level to the pin
    level = level - increment;      // Decrease the brightness by the increment
    delay(10);                      // Add a small delay to slow down the fade effect
  }
}