/*
 * Exit Rum 2
 * (c) Tomas 'Harvie' Mudrunka 2018
 */


//Nastaveni bomby

#define DISARM_CODE "12345678"
#define TIME_COUNTDOWN 600
#define TIME_COUNTDOWN 15


//Prirazeni pinu

#define PIN_CABLE_CHECK 2

#define PIN_KEY_CLK 3 //IRQ!
#define PIN_KEY_DATA 4

#define PIN_LED_G 5
#define PIN_LED_B 6
#define PIN_LED_R 7

#define PIN_COIL_LO 10
#define PIN_COIL_HI 11

#define ADDR_DISPLAY 0x70

//////////////////////////////////////////////////////////////////

#include <PS2Keyboard.h>

//#include <Wire.h> // Enable this line if using Arduino Uno, Mega, etc.
#include <Adafruit_GFX.h>
#include "Adafruit_LEDBackpack.h"

PS2Keyboard keyboard;
Adafruit_7segment display = Adafruit_7segment();

#define cnt_sec(s) (s%60)
#define cnt_min(s) (s/60)
#define cnt_dec(s) (cnt_min(s)*100+cnt_sec(s))

void setup() {
  //Pripravime periferie
  Serial.begin(9600);
  keyboard.begin(PIN_KEY_DATA, PIN_KEY_CLK);
  display.begin(ADDR_DISPLAY);

  pinMode(PIN_LED_R, OUTPUT);
  pinMode(PIN_LED_G, OUTPUT);
  pinMode(PIN_LED_B, OUTPUT);
  pinMode(PIN_COIL_LO, OUTPUT);
  pinMode(PIN_COIL_HI, OUTPUT);
  pinMode(PIN_CABLE_CHECK, INPUT_PULLUP);
    
    }


void loop() {
  //Vynulujem periferie
  digitalWrite(PIN_COIL_LO, LOW);
  digitalWrite(PIN_COIL_HI, LOW);
  analogWrite(PIN_LED_R, 0);
  analogWrite(PIN_LED_G, 0);
  analogWrite(PIN_LED_B, 0);

  display.clear();
  display.writeDisplay();


  //Pockame na kabel

  display.print(0xCAB1,HEX);
  display.writeDisplay();
  while(digitalRead(PIN_CABLE_CHECK)) delay(100);
  display.clear();
  display.writeDisplay();
  
  while(!digitalRead(PIN_CABLE_CHECK)) delay(100);

  //Odpocitavame

  int guessed = 0, disarmed = 0;

  for(int cnt = TIME_COUNTDOWN; cnt>=0 && !disarmed; cnt--) {
    display.print(cnt_dec(cnt), DEC);
    display.drawColon((cnt+1)%2);
    display.writeDisplay();

    analogWrite(PIN_LED_R, random(0,3));
    analogWrite(PIN_LED_G, random(0,3));
    analogWrite(PIN_LED_B, random(0,3));

    tone(PIN_COIL_LO, 1000, 30);
    
    delay(1000);

    //Cteme klavesnici
    while(keyboard.available()) {
      char c = keyboard.read();
      if (c == PS2_ENTER) {
         Serial.println();
       } else {
         Serial.print(c);
       }
       if(c == DISARM_CODE[guessed]) {
          guessed++;
          Serial.println("\nGOT!");
        } else {
          guessed=0;
          Serial.println("\nFAIL!");
       }
       if(DISARM_CODE[guessed]==0) {
        disarmed = 1;
        Serial.println("\nDISARMED!");
       }
       }
    }

    if(disarmed) {
       tone(PIN_COIL_LO, 3000, 500);
       delay(500);
       tone(PIN_COIL_LO, 5000, 500);
       analogWrite(PIN_LED_R, 0);
       analogWrite(PIN_LED_G, 3);
       analogWrite(PIN_LED_B, 0);
       display.print(0xDEFD,HEX);
       display.writeDisplay();
       delay(1000);
       
      }

while(digitalRead(PIN_CABLE_CHECK)) {
    
    if(!disarmed) {
  
  int i;
  
  analogWrite(PIN_LED_R, random(0,255));
  analogWrite(PIN_LED_G, random(0,0));
  analogWrite(PIN_LED_B, random(0,255));

    for(i = 0; i < 10; i++) display.writeDigitRaw(i,random(0,255));
    display.setBrightness(random(0,15));
    display.writeDisplay();

    digitalWrite(PIN_COIL_HI,HIGH); delay(20); digitalWrite(PIN_COIL_HI,LOW);
    int rnd = random(30,100);
    tone(PIN_COIL_LO, random(100,8000), rnd);
    delay(rnd);
  }
}
  
  }