#include <Adafruit_NeoPixel.h>
#include <DFPlayerMini_Fast.h>
#include <Arduino.h>
#include <U8g2lib.h>
#if !defined(UBRR1H)
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 1); // RX, TX
#endif

#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif


//128x32 Ammo display on pins 9 & 10
U8G2_SSD1306_128X32_UNIVISION_F_SW_I2C u8g2(U8G2_R3, /* clock=*/ 9, /* data=*/ 10, /* reset=*/ U8X8_PIN_NONE);   // Adafruit Feather ESP8266/32u4 Boards + FeatherWing OLED
//64x32 Scop display on pins 4 & 5 (native SDA SCL pins)
U8G2_SSD1306_64X32_1F_1_HW_I2C u8g3(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
// End of constructor list

// pin definitions

int fire = 8;
int reload = 7;
int led =2;


// global variables
int count1 = 1;
int count2 = 1;
int lastButtonState1 = 1;
int lastButtonState2 = 1;
long unsigned int lastPress1;
long unsigned int lastPress2;
volatile int buttonFlag1;
volatile int buttonFlag2;
int debounceTime = 20;
int ammo = 99;

DFPlayerMini_Fast myMP3;




void setup() {
  // setup pin modes
  pinMode(reload, INPUT);
  pinMode(fire, INPUT);
  Serial.begin(9600); // dont forget to set your serial monitor speed to whatever is set here
  Serial.println("Running");
  u8g2.begin();
  u8g3.begin();

  //DFPlayer Setup
  mySerial.begin(9600);
  myMP3.begin(mySerial, true);
  Serial.println("Setting volume to max");
  myMP3.volume(30);

  
  // Ammo Count Boxes
  u8g2.setDrawColor(1);
  u8g2.setFontPosTop();
  u8g2.setFontDirection(0);
    
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_inb19_mn);
  u8g2.setCursor (2, 2);
  u8g2.print(ammo);
  
  //Draw Five Ammo Count Boxes
  u8g2.drawBox(2,110,30,17);
  u8g2.drawBox(2,91,30,17);
  u8g2.drawBox(2,72,30,17);
  u8g2.drawBox(2,53,30,17);
  u8g2.drawBox(2,34,30,17);
  u8g2.sendBuffer();

  //Play initial startup sound
  myMP3.playFromMP3Folder(0003);

  
  
}

void loop() {
  //Fire button check loop
  u8g3.firstPage(); 
  do {
    int a = random(1, 12);
    int b = random(1, 12);
    int c = random(1, 12);
    int d = random(1, 12);
    int e = random(70, 90);
   
    //Draw Scope
    u8g3.drawCircle(32, 15, 15);//Outer Ring
    u8g3.drawCircle(32, 15, 2);//Inner ring
    u8g3.drawLine(20, 15, 15, 15);//left hash
    u8g3.drawLine(44, 15, 49, 15);//right hash
    u8g3.drawLine(32, 30, 32, 25);//bottom hash
    u8g3.drawLine(32, 1, 32, 5);//top hash
    
    u8g3.setFont(u8g2_font_tom_thumb_4x6_tf);
    u8g3.setCursor (46, 6);
    u8g3.print("TI-23");
    u8g3.setCursor(52, 26);
    u8g3.print("RNG");
    u8g3.setCursor(52, 32);
    u8g3.print(e);
    u8g3.print("m");
    //Top Left Bars
    u8g3.drawLine(1, 1, a, 1);//bar 1
    u8g3.drawLine(1, 3, b, 3);//bar 2
    u8g3.drawLine(1, 5, c, 5);//bar 3
    u8g3.drawLine(1, 7, d, 7);//bar 4
    delay(50);
  } while ( u8g3.nextPage() );

digitalWrite(led, LOW);
 
if(digitalRead(fire)==HIGH && ammo>0)
  {
    
      Serial.println("Fire:");
      //Ammo Bar
      //Five bars
      if ((ammo <=100) && (ammo >= 80))
      { 
        digitalWrite(led,HIGH);
         myMP3.playFromMP3Folder(0001);
        ammo = ammo - 1;
        //Five ammo count boxes already drawn
        Serial.println("50-40");
        u8g2.setCursor (2, 2);
        u8g2.print(ammo);
        u8g2.sendBuffer();
        digitalWrite(led,LOW);
        delay(100);
        
      }

      //four bars
      if ((ammo <= 79) && (ammo >= 60))
      {
       digitalWrite(led,HIGH);
         myMP3.playFromMP3Folder(0001);
           ammo = ammo - 1;
        //Draw Four Ammo Count Boxes
        Serial.println("39-30");
        u8g2.clearBuffer();
        u8g2.drawBox(2,110,30,17);
        u8g2.drawBox(2,91,30,17);
        u8g2.drawBox(2,72,30,17);
        u8g2.drawBox(2,53,30,17);
        Serial.println(ammo);
        u8g2.setCursor (2, 2);
        u8g2.print(ammo);
        u8g2.sendBuffer();
         digitalWrite(led, LOW);
          delay(100);
      }

      //Three bars
      if ((ammo <= 59) && (ammo >= 40)) {
       digitalWrite(led,HIGH);
         myMP3.playFromMP3Folder(0001);
         ammo = ammo - 1;
        //Draw Four Ammo Count Boxes
        Serial.println("29-20");
        u8g2.clearBuffer();
        u8g2.drawBox(2,110,30,17);
        u8g2.drawBox(2,91,30,17);
        u8g2.drawBox(2,72,30,17);
        Serial.println(ammo);
        u8g2.setCursor (2, 2);
        u8g2.print(ammo);
        u8g2.sendBuffer();
         digitalWrite(led, LOW);
          delay(100);
      }

      //Two bars
      if ((ammo <= 39) && (ammo >= 20)) {
         digitalWrite(led,HIGH);
         myMP3.playFromMP3Folder(0001);
         delay(100);
            ammo = ammo - 1;
        //Draw Four Ammo Count Boxes
        Serial.println("19-10");
        u8g2.clearBuffer();
        u8g2.drawBox(2,110,30,17);
        u8g2.drawBox(2,91,30,17);
        Serial.println(ammo);
        u8g2.setCursor (2, 2);
        u8g2.print(ammo);
        u8g2.sendBuffer();
         digitalWrite(led, LOW);
          delay(100);
      }

      //One bars
      if ((ammo <= 19) && (ammo >= 1)) {
        digitalWrite(led,HIGH);
         myMP3.playFromMP3Folder(0001);
         delay(100);
         ammo = ammo - 1;
        //Draw Four Ammo Count Boxes
        u8g2.clearBuffer();
        u8g2.drawBox(2,110,30,17);
        Serial.println(ammo);
        u8g2.setCursor (2, 2);
        u8g2.print(ammo);
        u8g2.sendBuffer();
        digitalWrite(led, LOW);
         delay(100);
      }

      //Zero bars
      if ((ammo == 0)) {
        Serial.println("Empty");
       myMP3.playFromMP3Folder(0005);
        //Draw Four Ammo Count Boxes
        u8g2.clearBuffer();
        Serial.println(ammo);
        u8g2.setCursor (2, 2);
        u8g2.print(ammo);
        u8g2.sendBuffer();
      }
  
    }
    if(digitalRead(fire)==LOW){
      Serial.println("do nothing");
    }
    if (digitalRead(reload) == HIGH) {
        Serial.println("...Reload...");
        myMP3.playFromMP3Folder(0003);
        ammo = 99;
        //Re-Draw Five Ammo Count Boxes for reload
        u8g2.drawBox(2,110,30,17);
        u8g2.drawBox(2,91,30,17);
        u8g2.drawBox(2,72,30,17);
        u8g2.drawBox(2,53,30,17);
        u8g2.drawBox(2,34,30,17);
        u8g2.setCursor (2, 2);
        u8g2.print(ammo);
        u8g2.sendBuffer();
       
        delay(1000);
      }
    ;
    }