/* 
HACK THE CODE / MASTERMIND-PRINZIP


--OWNER--

Bei Programmstart >3x drücken
Ownermodus im Display
Owner-Code eingabe
Code = 7218

--LED--
GRÜN  PIN 5,6,7,8
ROT   PIN 9,10,11,12

--ENCODER--
CLK = 2
DT  = 3
SW  = 4

--SERVO--
servo_pin = A0

--DISPLAY--
SDA = A4
SCL = A5
*/

// Display 16x2 IC2
#include <LiquidCrystal_I2C.h>

int totalColumns = 16;
int totalRows = 2;
int scroll_time=150;

LiquidCrystal_I2C lcd(0x27, totalColumns, totalRows);

//

// Servo PIN A0
#include <Servo.h>
Servo servo;

byte servo_pin=A0;
byte servo_open=55;
byte servo_close=75;

//
// Encoder
#define ENCODER_CLK 2
#define ENCODER_DT  3
#define ENCODER_SW  4
int lastClk = HIGH;

//

//
// LED / CODE / 
byte code_eingabe[4]={0,0,0,0};
byte code[4]={0,0,0,0};

String code_owner="7218";

byte LED_G[4]={5,6,7,8};
byte LED_R[4]={9,10,11,12};

byte owner_count=0;
byte pin;
int pos=0;
byte code_pos=6;
bool pressed=false;
bool blink=false;
bool check=false;
bool code_richtig=false;
bool restart=false;
bool open=false;
bool anzeige=false;
bool start_=false;

long akt_millis;
long blinken=300;
long anzeige_millis;

int counter = 0;

// static Values
const static int PLAY     = 1;
const static int CHECK    = 2;
const static int WIN      = 3;
const static int RESET    = 4;
const static int START    = 5;
const static int OPEN     = 6;
const static int ENDE     = 7;
const static int LOST     = 8;
const static int OWNER    = 9;
const static int LEER_3   = 10;
int state;

//Texte
String Start_txt_1 = "HALLO ZU walkaholic's LET's PLAY #6 GCXXXXX";
String Start_txt_2= "DAS SPIELPRINZIP FOLGT DEM VON MASTERMIND! STELLT DEN CODE DURCH DREHEN EIN. DURCH DRUECKEN BESTAETIGT IHR DIE EINGABE! DIE LED ZEIGT EUCH DEN STATUS DES CODES AN!";
//"LED-GRUEN = ZIFFER RICHIG! / LED-ROT = ZIFFER FALSCH! / LED-ROT-GRUEN = ZIFFER RICHTIG, ABER AN FALSCHER STELLE!";


  
void setup() 
{
  Serial.begin(115200);
  //Serial.println(Start_txt_1.length());
  //Serial.println(Start_txt_2.length());
  // Initialize LCD
  lcd.init();
  lcd.backlight();

  //randomSeed(A6);      
  // PINS
  pinMode(ENCODER_CLK, INPUT);
  pinMode(ENCODER_DT, INPUT);
  pinMode(ENCODER_SW, INPUT_PULLUP);

  // LED
  for (byte i=0; i<=3; i++)
  {
    pinMode(LED_G[i], OUTPUT);
    pinMode(LED_R[i], OUTPUT);
  }
  programm_startet();
}


void check_owner()
{
  if(digitalRead(ENCODER_SW)==LOW && pressed==false)
  {
    owner_count++;
    pressed=true;
  }
  if(digitalRead(ENCODER_SW)==HIGH && pressed==true)
  {
    pressed=false;
  }
}
void start()
{ 
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("    GCXXXXX     ");
  lcd.setCursor(0,1);
  lcd.print(" HACK THE CODE  ");
  delay(3000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("   a cache by   ");
  lcd.setCursor(0,1);
  lcd.print("   walkaholic     ");
  delay(3000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(" HACK THE CODE  ");
  lcd.setCursor(0,1);
  lcd.print(" PRESS TO START ");

  

  while (state==START) {
    if(digitalRead(ENCODER_SW)==LOW) {
      randomSeed(millis());
      /*  for (byte i=0; i<=3; i++)
      {
      //code[i]=random(0,10);
      //Serial.print(code[i]);Serial.print(",");
      }
      */
      code[0]=2;code[1]=3;code[2]=6;code[3]=3;
      /*
      while(code[3]==0) {
        int zahl=random(0,10);

        for(byte i=0; i<=3; i++) {
          if(code[i]==zahl) {
            break;
          }
          if(code[i]==0) {
            code[i]=zahl;
            //Fragen_Nummer=zahl;
            Serial.print(code[i]);
            if(code[3]!=0) {
              Serial.println();
            }
            break;
          }
        }
      }
      */
      state=PLAY;
      lcd.setCursor(0,1);
      lcd.print("      ----      ");
      delay(500);
    }
  }
}

void ende()
{
  blink_win();
  anzeige_win();
}

void reset()
{
if (digitalRead(ENCODER_SW)==LOW && pressed==false)
{
  lcd.clear();
  restart=false;
  check=false;
  code_richtig=false;
  code_pos=6;
  counter=0;
  pos=0;
  for(byte i=0; i<=3; i++)
  {
    digitalWrite(LED_G[i], LOW);
    digitalWrite(LED_R[i], LOW);
  }
  delay(200);
  
  lcd.setCursor(1,0);
  lcd.print("HACK THE CODE");
  lcd.setCursor(6,1);
  lcd.print("----");
  state=PLAY;
}
}

void oeffnen(byte pin)
{
  servo.attach(pin);
  servo.write(servo_open);
  delay(1000);
  servo.write(servo_close);
  delay(1000);
  servo.detach();
}

void win()
{
lcd.clear();
    lcd.setCursor(2,0);
    lcd.print("CODE CORRECT");
    lcd.setCursor(0,1);
    lcd.print("DRESOR OPEN NOW");
    delay(2000);
    for(byte i=0; i<=3; i++)
  {
    digitalWrite(LED_G[i], LOW);
    digitalWrite(LED_R[i], LOW);
  }
    oeffnen(servo_pin);
    delay(2000);
    state=ENDE;
}

void lost()
{
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("CODE IST FALSCH");
    lcd.setCursor(1,1);
    lcd.print("PRESS TO START");
    state=RESET;
}

void loop() 
{

if(digitalRead(ENCODER_SW)==HIGH && pressed==true)
  {
    pressed=false;
  }

  switch (state)
  {
    case START: start(); break;
    case PLAY: play(); break;
    case WIN: win(); break;
    case LOST: lost(); break;
    case RESET: reset(); break;
    case ENDE: ende(); break;
    case OWNER: owner(); break;
  }
}