#include <LiquidCrystal_I2C.h>
#include <Arduino.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

constexpr int PIN_Y  = A0;
constexpr int PIN_X  = A1;
constexpr int PIN_SW = 2;

constexpr int PIN_LED_LEFT   = 12;
constexpr int PIN_LED_RIGHT  = 8;
constexpr int PIN_LED_TOP    = 11;
constexpr int PIN_LED_BOTTOM = 9;
constexpr int PIN_LED_CENTER = 10;


long point = 0;

enum Direction {
  LEFT,
  RIGHT,
  TOP,
  BOTTOM,
  CENTER,
  NONE
} joysticDirection, ledDirection;


void ledOnOff(int pin) {
  digitalWrite(pin, HIGH);
  delay(500);
  digitalWrite(pin, LOW);
}


void setup() {
  randomSeed(analogRead(0));

  pinMode(PIN_SW, INPUT_PULLUP);
  digitalWrite(PIN_SW, HIGH);
  Serial.begin(115200);

  lcd.init();
  lcd.backlight();
  lcd.begin(16, 2);

  pinMode(PIN_LED_LEFT,  OUTPUT);
  pinMode(PIN_LED_RIGHT, OUTPUT);
  pinMode(PIN_LED_TOP,   OUTPUT);
  pinMode(PIN_LED_BOTTOM,OUTPUT);
  pinMode(PIN_LED_CENTER,OUTPUT);
}

void loop() {
  lcd.setCursor(1, 0);
  lcd.print("TOTAL PKT. " + String(point));

  ledDirection = random(0, 5);
  
  switch (ledDirection) {
    case LEFT:
      ledOnOff(PIN_LED_LEFT);
    break;

    case RIGHT:
      ledOnOff(PIN_LED_RIGHT);
    break;

    case TOP:
      ledOnOff(PIN_LED_TOP);
    break;

    case BOTTOM:
      ledOnOff(PIN_LED_BOTTOM);
    break;
    
    case CENTER:
      ledOnOff(PIN_LED_CENTER);
    break;
  }

  // delay(1500);

  int X = (analogRead(PIN_X) - 512) * -1;
  int Y = analogRead(PIN_Y) - 512;


  if (X > 0 && Y == 0) joysticDirection = RIGHT;
  else if (X < 0 && Y == 0) joysticDirection = LEFT;
  else if (Y > 0 && X == 0) joysticDirection = TOP;
  else if (Y < 0 && X == 0) joysticDirection = BOTTOM;
  else if (Y == 0 && X == 0 && digitalRead(PIN_SW) == LOW) joysticDirection = CENTER;
  else joysticDirection = NONE;

  if (ledDirection == joysticDirection) point += 1;

  Serial.println(ledDirection);
  Serial.println(joysticDirection);
  delay(500);
}