#include <LiquidCrystal.h>

LiquidCrystal lcd(13, 12, 11, 10, 9, 8);
int buttons[] = {35, 37, 41, 39};
int LEDs[] = {23, 25, 27, 29, 31, 53, 51, 49, 47, 45};


void setup() {
  Serial.begin(9600);
  randomSeed(analogRead(0));
  lcd.begin(16, 2);
  random(2, 9);

  for(int i = 0; i < 10; i++) pinMode(LEDs[i], OUTPUT);

  lcd.print("   Select  P1");
}

void wait_sec(double sec){
  unsigned long startTime = millis();
  while (millis() - startTime < sec*1000){}
}

String center(String text){
  return text;
}

int* select_bullets(int n=0){
  if(n==0) n = random(2, 9);
  int* bullets = new int[8];
  for(int i = 0; i < n; i++) bullets[i] = random(1, 3);
  return bullets;
}

String concat_bullets(int bullets[]){
  String text = "";
  for(int i = 0; i < 8; i++){
    switch(bullets[i]){
      case 0: text += "_"; break;
      case 1: text += "8"; break;
      case 2: text += "u"; break;
    }
  }
  return text;
}

void show_bullets(int bullets[]){
  lcd.clear();
  lcd.setCursor(4, 0);
  lcd.print(concat_bullets(bullets));
  wait_sec(1);
  lcd.clear();
}

bool started = false;

int P1self;
int P1other;
int P2self;
int P2other;
int P1health;
int P2health;
int* P1LEDs = new int[5];
int* P2LEDs = new int[5];
bool P1turn = true;

void loop() {

  if(!started){
    while(!(digitalRead(buttons[0]) || digitalRead(buttons[1]) || digitalRead(buttons[2]) || digitalRead(buttons[3]))){}
    
    
    if(digitalRead(buttons[0]) || digitalRead(buttons[1])) {
      P1self = buttons[0];
      P1other = buttons[1];
      P2other = buttons[3];
      P2self = buttons[2];

      for(int i = 0; i < 5; i++){
        P1LEDs[i] = LEDs[i];
        P2LEDs[i] = LEDs[i+5];
      }
    }
    else {
      P2self = buttons[0];
      P2other = buttons[1];
      P1other = buttons[3];
      P1self = buttons[2];

      for(int i = 0; i < 5; i++){
        P2LEDs[i] = LEDs[i];
        P1LEDs[i] = LEDs[i+5];
      }
    }

    lcd.clear();
    for(int i = 0; i < 5; i++){
      digitalWrite(P1LEDs[i], HIGH);
      digitalWrite(P2LEDs[i], HIGH);
      wait_sec(0.5);
    }
    P1health = 5;
    P2health = 5;

    wait_sec(1);

    int* bullets = select_bullets();
    show_bullets(bullets);

    started = true;
  }

  else{
    
  }
}