/*
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** Name:     Liam dutot                 **
** Prog Name: Jasey Game                **
** Date: 10/03/2024                     **
** Desc:  Trivia game                   **
**                                      **
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*/
// DEFINE ALL NEEDED CONSTANTS FOR CONFIGURATION
  // the number of the push button
 // Button pins 

const int button1 = 4;   // Button 1 connected to pin 4 (use INPUT_PULLUP) 
const int button2 = 5;   // Button 2 connected to pin 5 (use INPUT_PULLUP) 
const int button3 = 7;   // Button 3 connected to pin 7 (use INPUT_PULLUP) 

 

// LED pins 

const int P1Led = 9;     // LED for Player 1 (use OUTPUT) 
const int P2Led = 10;    // LED for Player 2 (use OUTPUT) 
const int P3Led = 6;     // LED for Player 3 (use OUTPUT) 

 

// Speaker pin 

const int speaker = 8;   // Speaker connected to pin 8 (use OUTPUT) 

 

// Interrupt pins 

const int contInt = 2;   // Continue button interrupt on pin 2 (use INPUT_PULLUP) 
const int resetInt = 3;  // Reset button interrupt on pin 3 (use INPUT_PULLUP) 

 

// Flags for game control 

int whatPlayerPressed = 0;  // Keeps track of which player pressed their button 

int contGame = 0;           // 0 = not pressed, 1 = pressed (for continue button) 
int resetGame = 0;          // 0 = not pressed, 1 = pressed (for reset button) 

int P1Stopped = 0;          // Player 1 status: 0 = not stopped, 1 = stopped 
int P2Stopped = 0;          // Player 2 status: 0 = not stopped, 1 = stopped 
int P3Stopped = 0;          // Player 3 status: 0 = not stopped, 1 = stopped 

 

// Interrupt handler for continue button 

void contIntHandler() { 
  contGame = 1;  // Set the continue flag when the button is pressed 

} 

 

// Interrupt handler for reset button 

void resetIntHandler() { 
  resetGame = 1;  // Set the reset flag when the button is pressed 

} 

 

void setup() { 

  // Initialize buttons (with internal pull-up resistors) 

  pinMode(button1, INPUT_PULLUP); 
  pinMode(button2, INPUT_PULLUP); 
  pinMode(button3, INPUT_PULLUP); 

 

  // Initialize LEDs 

  pinMode(P1Led, OUTPUT); 
  pinMode(P2Led, OUTPUT); 
  pinMode(P3Led, OUTPUT); 

 

  // Initialize the speaker 

  pinMode(speaker, OUTPUT); 

 

  // Initialize interrupt buttons (continue and reset) 

  pinMode(contInt, INPUT_PULLUP); 
  pinMode(resetInt, INPUT_PULLUP); 

  attachInterrupt(digitalPinToInterrupt(contInt), contIntHandler, FALLING);  // Attach continue interrupt 
  attachInterrupt(digitalPinToInterrupt(resetInt), resetIntHandler, FALLING);  // Attach reset interrupt 

} 

 

void loop() { 

  // Check if Player 1 pressed the button and is not stopped 

  if (digitalRead(button1) == LOW && P1Stopped == 0) { 
    whatPlayerPressed = 1;  // Set Player 1 as the current player 
    P1Stopped = P2Stopped = P3Stopped = 1;  // Stop all players 

    analogWrite(P1Led, 25);  // Light up Player 1 LED at 25% brightness 
    tone(speaker, 1000, 500);  // Play sound for 500ms 

  } 

 

  // Check if Player 2 pressed the button and is not stopped 

  if (digitalRead(button2) == LOW && P2Stopped == 0) { 
    whatPlayerPressed = 2;  // Set Player 2 as the current player 
    P1Stopped = P2Stopped = P3Stopped = 1;  // Stop all players 

    analogWrite(P2Led, 25);  // Light up Player 2 LED at 25% brightness 
    tone(speaker, 1000, 500);  // Play sound for 500ms 

  } 

 

  // Check if Player 3 pressed the button and is not stopped 

  if (digitalRead(button3) == LOW && P3Stopped == 0) { 
    whatPlayerPressed = 3;  // Set Player 3 as the current player 
    P1Stopped = P2Stopped = P3Stopped = 1;  // Stop all players 

    analogWrite(P3Led, 25);  // Light up Player 3 LED at 25% brightness 
    tone(speaker, 1000, 500);  // Play sound for 500ms 

  } 

 

  // Handle reset button press 

  if (digitalRead(resetInt) == LOW && resetGame == 1) { 
    resetGame = 0;  // Reset the reset flag 

    // Turn off all LEDs 

    digitalWrite(P1Led, LOW); 
    digitalWrite(P2Led, LOW); 
    digitalWrite(P3Led, LOW); 

 

    // Reset player status flags 

    P1Stopped = P2Stopped = P3Stopped = 0; 
    whatPlayerPressed = 0; 

  } 

 

  // Handle continue button press 

  if (contGame == 1) { 

    contGame = 0;  // Reset continue flag 

 

    // Allow other players to press buttons based on who pressed first 

    if (whatPlayerPressed == 1) { 

      P2Stopped = P3Stopped = 0;  // Only Player 1 is stopped 

    } else if (whatPlayerPressed == 2) { 

      P1Stopped = P3Stopped = 0;  // Only Player 2 is stopped 

    } else if (whatPlayerPressed == 3) { 

      P1Stopped = P2Stopped = 0;  // Only Player 3 is stopped 

    } 

  } 

}