#define set0(r,b) r &= ~(1<<b)
#define set1(r,b) r |= 1<<b
#define test(r,b) (r&(1<<b))

#include <MD_MAX72xx.h>

// display setup
#define MAX_DEVICES 1
#define	CLK		13
#define	DATA	11
#define	CS		10
MD_MAX72XX display = MD_MAX72XX(MD_MAX72XX::PAROLA_HW, CS, MAX_DEVICES);

// joystick setup
#define VERT A0
#define HORZ A2

// variables setup (positions,score)
int x=3;
int y=3;

int xPoint; 
int yPoint;
int score;

// millis setup
unsigned long previousMillis = 0;
const long interval = 500;  

void setup(){
  Serial.begin(9600);
  display.begin();
  display.control(MD_MAX72XX::INTENSITY, MAX_INTENSITY / 2);
  display.setPoint(x, y, true);
  set0(DDRC,0);
  set0(DDRC,2);
  
  // generate random position for point
  randomSeed(analogRead(0));
  xPoint =random(8);
  yPoint =random(8);

  if(yPoint == y && xPoint ==x){
      xPoint =random(8);
      yPoint =random(8);
  }

  display.setPoint(xPoint, yPoint, true);
}
void loop(){ 
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis; 

    int vertical = analogRead(VERT);
    int horizontal = analogRead(HORZ);

    // movement of character
    if (vertical > 512) {

      display.setPoint(x, y, false);  
      // nasiel som tuto zaujimavu funkciu na limitovanie int,funckia vrati vacsie cislo :D
      x = max(0, x - 1);             
      display.setPoint(x, y, true);  

    } else if (vertical < 512) {

      display.setPoint(x, y, false);
      // podobne ako pri max() ale tu fukcia vrati mensie cislo
      x = min(7, x + 1);              
      display.setPoint(x, y, true);
    }

    if (horizontal > 512) {

      display.setPoint(x, y, false);
      y = min(7, y + 1);             
      display.setPoint(x, y, true);

    } else if (horizontal < 512) {

      display.setPoint(x, y, false);
      y = max(0, y - 1);             
      display.setPoint(x, y, true);
    }

    // check for hit
    if(yPoint == y && xPoint ==x){
        score= score+1;
        xPoint =random(8);
        yPoint =random(8);
          if(yPoint == y && xPoint ==x){
          xPoint =random(8);
          yPoint =random(8);
      }
        display.setPoint(xPoint, yPoint, true);
        Serial.print("Zasah!!, tvoje skore je :");
        Serial.print(score);
        Serial.println();
    }

    // check for game over
    if(score ==10){
      Serial.println("Zvitazil si !!");
      score=0;
      display.setPoint(xPoint, yPoint, false);
      Serial.println("Zacni hrat znova");
      xPoint =random(8);
      yPoint =random(8);
      
      if(yPoint == y && xPoint ==x){
          xPoint =random(8);
          yPoint =random(8);
      }
      display.setPoint(xPoint, yPoint, true);
    }
  }
 }