// AIIT, 27.09.2023      Julian Weber 5AHET

#include <Arduino.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h> //including the required libraries

#define startButton A0 //defining the start button

#define Button1 0
#define Button2 6
#define Button3 2
#define Button4 3
#define Button5 4
#define Button6 5 //defining the button pins, which when pushed whack the mole

#define LED1 13
#define LED2 12
#define LED3 11
#define LED4 10
#define LED5 9
#define LED6 8 //defining the LED Pins (moles)

bool buttonstart = 0; //needed to read the start button

bool cButtonstate1 = 0; 
bool cButtonstate2 = 0;
bool cButtonstate3 = 0;
bool cButtonstate4 = 0;
bool cButtonstate5 = 0;
bool cButtonstate6 = 0; //currentbuttonstates

bool pButtonstate1 = 0; 
bool pButtonstate2 = 0;
bool pButtonstate3 = 0;
bool pButtonstate4 = 0;
bool pButtonstate5 = 0;
bool pButtonstate6 = 0; //previousbuttonstates

bool LED_1 = 0;
bool LED_2 = 0;
bool LED_3 = 0;
bool LED_4 = 0;
bool LED_5 = 0;
bool LED_6 = 0; //needed to read the LEDs

bool timereset = 0; //resets the millis every time the state goes to start

unsigned long time = 0; //stores the time, which is going by
unsigned long ptime = 0; //stores the previous time
unsigned long gtime = 0; //stores the time, which is going by until the button is pushed
unsigned long gametime = 60000; //defining the gametime (60sec)
unsigned long moleinterval = 2000; //defining the time you have to whack the mole (2sec)
unsigned long moletime = 0; //stores the time, when the random LED went HIGH
unsigned long score = 0; //stores the score
unsigned long mole = 0; //later needed for the random function

LiquidCrystal_I2C lcd(0x27, 16, 2); //defining the LCD Display

enum state
{
    menu,
    start,
    end,
};

state game = menu; //state machine for the menu and start case

void setup()
{
    lcd.init();
    lcd.backlight(); //initialize LCD Display 

    pinMode(startButton, INPUT_PULLUP);
    pinMode(Button1, INPUT_PULLUP);
    pinMode(Button2, INPUT_PULLUP);
    pinMode(Button3, INPUT_PULLUP);
    pinMode(Button4, INPUT_PULLUP);
    pinMode(Button5, INPUT_PULLUP);
    pinMode(Button6, INPUT_PULLUP); //defining all Buttons as Pullups for less cables

    pinMode(LED1, OUTPUT);
    pinMode(LED2, OUTPUT);
    pinMode(LED3, OUTPUT);
    pinMode(LED4, OUTPUT);
    pinMode(LED5, OUTPUT);
    pinMode(LED6, OUTPUT); //defining LEDs as outputs
}

void loop()
{
    time = millis(); //storing the current time in time

    buttonstart = !digitalRead(startButton);
    cButtonstate1 = !digitalRead(Button1);
    cButtonstate2 = !digitalRead(Button2);
    cButtonstate3 = !digitalRead(Button3);
    cButtonstate4 = !digitalRead(Button4);
    cButtonstate5 = !digitalRead(Button5);
    cButtonstate6 = !digitalRead(Button6); //reading all Buttons (! because they are pullups)

    LED_1 = digitalRead(LED1);
    LED_2 = digitalRead(LED2);
    LED_3 = digitalRead(LED3);
    LED_4 = digitalRead(LED4);
    LED_5 = digitalRead(LED5);
    LED_6 = digitalRead(LED6); //reading all the LEDs

    switch (game) 
    {
        case menu:
        {
          lcd.setCursor(0,0);
          lcd.print("Playtime:"); //printing playtime on the Display
          lcd.print(gametime/1000); //printing the gametime in sec on the Display
          lcd.print(" ");
          lcd.setCursor(0,1);
          lcd.print("press start");

            if(buttonstart)
            {
                gtime = time; //sets gtime to the current time
                game = start; //if the start Button is pushed the state goes to start
                lcd.clear(); //clearing the Display
                score = 0; //setting score to zero every restart
            }
        }
        break; //case menu

        case start:
        {
          time = time-gtime; //sets time to the time going by after the button was pushed
          lcd.setCursor(0,0);
          lcd.print("Playtime:"); 
          lcd.print((gametime-time)/1000); //printing gametime on the Display
          lcd.print(" ");
          lcd.setCursor(0,1);
          lcd.print("score:");
          lcd.print(score); //printing the score on the Display

          if(!LED_1 && !LED_2 && !LED_3 && !LED_4 && !LED_5 && !LED_6) //if no LED is shining
          {
            mole = random(8,14); //pick a random LED Pin
            digitalWrite(mole,HIGH); //turn the random LED on
            moletime = time;
          }

          if(LED_1&&cButtonstate1&&!pButtonstate1)
          {
            score++;
            digitalWrite(LED1, LOW);
            moletime = 0;
          }   

          if(LED_2&&cButtonstate2&&!pButtonstate2)
          {
            score++;
            digitalWrite(LED2, LOW);
            moletime = 0;
          }      

          if(LED_3&&cButtonstate3&&!pButtonstate3)
          {
            score++;
            digitalWrite(LED3, LOW);
            moletime = 0;
          }      

          if(LED_4&&cButtonstate4&&!pButtonstate4)
          {
            score++;
            digitalWrite(LED4, LOW);
            moletime = 0;
          }      

          if(LED_5&&cButtonstate5&&!pButtonstate5)
          {
            score++;
            digitalWrite(LED5, LOW);
            moletime = 0;
          }    

          if(LED_6&&cButtonstate6&&!pButtonstate6) //if the LED is shining and the button is pressed
          {
            score++;
            digitalWrite(LED6, LOW); //the score is increasing by one and the LED is turning off
            moletime = 0; //the moletime is set to zero
          }                          

          if(time-moletime > moleinterval)
          {
            digitalWrite(LED1, LOW);
            digitalWrite(LED2, LOW);
            digitalWrite(LED3, LOW);
            digitalWrite(LED4, LOW);
            digitalWrite(LED5, LOW);
            digitalWrite(LED6, LOW); //if the moletime is expired, then set all LEDs to low
          }

          pButtonstate1 = cButtonstate1;
          pButtonstate2 = cButtonstate2;
          pButtonstate3 = cButtonstate3;
          pButtonstate4 = cButtonstate4;
          pButtonstate5 = cButtonstate5;
          pButtonstate6 = cButtonstate6; //setting all previous button states to the current button state

          if(time >= gametime) 
            {
                lcd.clear();
                game = end; //if gametime is reached, then clear the Display and go to the end sate
            }
        }
        break;

        case end:
        {
          lcd.setCursor(0,0);
          lcd.print("Playtime:0");
          lcd.setCursor(0,1);
          lcd.print("score:");
          lcd.print(score); 

          if(buttonstart)
          {
            game = menu; //if the startbutton is pushed, go back in the menu state
          }
        }
        break;
    }
}