#include <LiquidCrystal_I2C.h>

/* ************************************
   ************************************
   **                                **
   ** NAME: Josh Shina               **
   ** PROG NAME: Wokwi Lab Test.ino  **
   ** DATE: 2024-10-22               **
   ** DESC: Simple menu cycler.      **
   **                                **
   ************************************
   ************************************
*/

// Defines the LCD Display
#define I2C_ADDR    0x27
#define LCD_COLUMNS 2
#define LCD_LINES   16

// Defines the parameters of the display
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int menuVariable = 1;

void setup() {
  // Sets the display up by lighting it up and displaying the LED Fader version
  lcd.init ();
  lcd.backlight ();
  lcd.setCursor (0, 0);
  lcd.print ("  MENU SYSTEM   ");
  delay (1000);

  // Sets up the LED
  pinMode (8, OUTPUT);

  // Sets up the button as an interrupt
  pinMode (2, INPUT_PULLUP);
  attachInterrupt (digitalPinToInterrupt (2), menuOption, FALLING);

} // End void setup ()

void loop() {
  // Resets cursor location after every loop
  lcd.setCursor (0, 0);
  
  // If menuVariable == 4 turn the LED on
  if (menuVariable == 4) {
    digitalWrite (8, HIGH);
    lcd.print("  Winner Menu   ");

  // Else turn the LED off
  } else {
    digitalWrite (8, LOW);

    if (menuVariable == 1) {
      lcd.print ("   Main Menu    ");
    } // End if ()

    if (menuVariable == 2) {
      lcd.print ("   Start Menu   ");
    } // End if ()

    if (menuVariable == 3) {
      lcd.print ("    Ply Menu    ");
    } // End if ()

    if (menuVariable == 5) {
      lcd.print ("   Game Over    ");
    } // End if ()

  } // End else

} // End void loop ()

/* *******************************************
   *******************************************
   **                                       **
   ** FUNCTION NAME: menuOption             **
   ** INPUTS: N/A                           **
   ** OUTPUTS: N/A                          **
   ** DESC: Changes menuVariable by 1,      **
   ** capping it at 5, then reseting to 1.  **
   **                                       **
   *******************************************
   ******************************************* */

void menuOption () {
  menuVariable++;
  // If menuVariable < 5 set it to 1
  if (menuVariable > 5) {
    menuVariable = 1;
  } // End if ()

} // End void menuOption ()