#include <Keypad.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
const byte ROWS = 4; // počet řádků na klávesnici
const byte COLS = 4; // počet sloupců na klávesnici
byte rowPins[ROWS] = {9, 8, 7, 6}; // připojené k pinům pro řádky
byte colPins[COLS] = {5, 4, 3, 2}; // připojené k pinům pro sloupce
char keys[ROWS][COLS] = {
  {'1','2','3','+'},
  {'4','5','6','-'},
  {'7','8','9','*'},
  {'D','0','=','/'}
};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);
int plrY = 0;
int obsYpos[2][4] = {
  {'1', '0', '1', '0'},
  {'0', '1', '0', '1'},
};
int x = random(1,3);
int obsX[4] = {15,15,15,15};
int obsY[4] = {0,0,0,0};
char obs = '#';
int actObs = 0;
char plr = 'N';
char plrList[4] = {'N', '0', '*', 'U'};
int plrNum = 0;
String win = "menu";
bool gameStart = true;



String language = "English";




void setup() {
  if (x == 1) {
    for (int i = 0; i < 3; i++) {
      obsY[i] = obsYpos[0][i];
    }
  } else {
    for (int i = 0; i < 3; i++) {
      obsY[i] = obsYpos[1][i];
    }
  }
  obstInit();
  lcd.init();
  lcd.backlight();
  // put your setup code here, to run once:
  if (win == "menu") {
    showMenuChar();
    menu();
  } else if (win == "game") {
    game();
  }
  Serial.begin(9600);
}

void obstInit() {
  obsY[0] = randomNumGen();
  obsY[1] = randomNumGen();
  obsY[2] = randomNumGen();
  obsY[3] = randomNumGen();
}

void showData(){
  lcd.clear();
  lcd.setCursor(obsX[actObs], obsY[actObs]);
  lcd.print(obs);
  lcd.setCursor(0, plrY);
  lcd.print(plr);
  Serial.println(obsY[0]);
  Serial.println(obsY[2]);
  Serial.println(obsY[3]);
  Serial.println(obsY[4]);
}

int randomNumGen() {
  int num = random(1,101); 
  if (num <= 50) {
    return 1;
  } else if (num > 50) {
    return 0;
  }
}


void game() {
  obstInit();
}

void loop() {
  // put your main code here, to run repeatedly:
  char key = keypad.getKey();
  if (key) {
    if (key == '+') {
      plrY = 0;
    } else if (key == '-')  {
      plrY = 1;
    }
  }
  obsX[actObs] -=1;
  if (obsX[actObs] == -1) {
    obsX[actObs] = 15;
    actObs += 1;
    if (actObs == 4) {
      actObs = 0;
    }
  }
  showData();
  delay(50);
}

void menu() {
  while (win == "menu") {
    char key = keypad.getKey();
    if (key) {
      if (key == '+') {
        plrNum += 1;
        if (plrNum == 4) {
          plrNum = 0;
        }
        showMenuChar();
      } else if (key == '-') {
        plrNum -= 1;
        if (plrNum == -1) {
          plrNum = 3;
        }
        showMenuChar();
      } else if (key == '=') {
        plr = plrList[plrNum];
        win = "game";
      }
    }
  }
}

void showMenuChar() {
  lcd.clear();
  lcd.setCursor(0,0);
  if (language == "English") {
      lcd.print("Choose character:");
  } else if (language == "Cesky") {
      lcd.print("Vyberte postavu:");
  } else if (language == "Bahasa Indonesia") {
      lcd.print("Vyber id");
  }
  lcd.setCursor(0,1);
  lcd.print(plrList[plrNum]);
}