// https://forum.arduino.cc/t/laser-game-code-ir-sensor/1408805

#include <IRremote.h>

int fire = 0, reset = 0, ammo = 30, pews = 0, reload = 0;
byte pin_tx = 2, led_red = 7, led_grn = 8;
byte pin_rx = 3, button_fire = 4, button_reload = 5, button_reset = 6;
byte pot = A0;
byte pinInput[]  = {3, 4, 5, 6};
byte pinOutput[] = {2, 7, 8};

void setup() {
  Serial.begin(9600);
  for (byte i = 0; i < 4; i++)
    pinMode(pinInput[i], INPUT);
  for (byte i = 0; i < 4; i++)
    pinMode(pinOutput[i], INPUT);
}

void loop() {
  fire = digitalRead(button_fire);
  reload = digitalRead(button_reload);

  if (reload == HIGH) {
    if (ammo > 30)
      ammo = 30;
    digitalWrite(red, HIGH);
    Serial.println("reloaded");
    delay(100);
  }

  if (fire == HIGH) {
    if (ammo > 0) {
      pews++;
      ammo--;
      digitalWrite(red, HIGH);
      Serial.print("pew, ");
      Serial.print(pews);
      Serial.print(" ammo, ");
      Serial.print(ammo);
      Serial.println();
      delay(50);
    }
    else {
      digitalWrite(red, HIGH);
      Serial.println("reload");
    }
  }
  else {
    digitalWrite(red, LOW);
  }
}