#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);
uint16_t vert=0, horz=0;
byte vpos=0, hpos=0, frames=19, randomNumber=0,c=0,score=0;
byte lastVal[4]={0,0,0,0};
byte man[] = {
  B00110,
    B01110,
      B01111,
        B01110,
          B10110,
            B11110,
              B01100,
                B00100
                };
                byte ship[] = {
                  B00011,
                    B00111,
                      B01111,
                        B11111,
                          B11111,
                            B01111,
                              B00111,
                                B00011
                                };
                                void setup() {
                                  randomSeed(analogRead(A3));
                                    pinMode(A2,2);
                                     lcd.init();
                                      lcd.backlight();
                                       lcd.createChar(0,man);
                                        lcd.createChar(1,ship);
                                         lcd.home();
                                          lcd.write(0);
                                           Serial.begin(9600);
                                           }

                                           void loop() {
                                             vert=analogRead(A0);
                                               horz=analogRead(A1);

                                                 if(vert>650){
                                                     vpos--;
                                                         lcd.setCursor(hpos,vpos+1);
                                                             lcd.print(" ");
                                                               }
                                                                 else if(vert<450){
                                                                     vpos++;
                                                                         lcd.setCursor(hpos,vpos-1);
                                                                             lcd.print(" ");
                                                                               }
                                                                                 if(horz>650){
                                                                                     hpos--;
                                                                                         lcd.setCursor(hpos+1,vpos);
                                                                                             lcd.print(" ");
                                                                                               }
                                                                                                   if(horz<450){
                                                                                                       hpos++;
                                                                                                           lcd.setCursor(hpos-1,vpos);
                                                                                                               lcd.print(" ");
                                                                                                                 }
                                                                                                                   vpos=constrain(vpos,0,3);
                                                                                                                     hpos=constrain(hpos,0,19);
                                                                                                                       lcd.setCursor(hpos,vpos);
                                                                                                                         lcd.write(0);
                                                                                                                           lcd.setCursor(frames+1,randomNumber);
                                                                                                                             lcd.print(" ");
                                                                                                                               lcd.setCursor(frames,randomNumber);
                                                                                                                                 lcd.write(1);
                                                                                                                                   lcd.setCursor(frames+randomNumber+1,randomNumber);
                                                                                                                                     lcd.print(" ");
                                                                                                                                       lcd.setCursor(frames+randomNumber,randomNumber);
                                                                                                                                         lcd.write(1);
                                                                                                                                           if(hpos==frames&&vpos==randomNumber||hpos==frames+randomNumber&&vpos==randomNumber){
                                                                                                                                               score=0;
                                                                                                                                                   Serial.println("Game over");
                                                                                                                                                     }
                                                                                                                                                       for(byte i=1;i<4;i++)
                                                                                                                                                         if(hpos==i&&vpos==i&&lastVal[i]==i){
                                                                                                                                                             lastVal[i]=0;
                                                                                                                                                                 score++;
                                                                                                                                                                     lcd.setCursor(i,i);
                                                                                                                                                                         lcd.print(" ");
                                                                                                                                                                             Serial.println(score);
                                                                                                                                                                               }
                                                                                                                                                                                 if (frames-- == 0){
                                                                                                                                                                                     if(frames+randomNumber-1>0)
                                                                                                                                                                                         lastVal[randomNumber]=frames+randomNumber+1;
                                                                                                                                                                                             for(byte i=0;i<4;i++)
                                                                                                                                                                                                 randomNumber=random(4);
                                                                                                                                                                                                     frames=19;
                                                                                                                                                                                                         for(byte i=0;i<4;i++){
                                                                                                                                                                                                             lcd.setCursor(0,i);
                                                                                                                                                                                                                 lcd.print(" ");
                                                                                                                                                                                                                     }
                                                                                                                                                                                                                       }
                                                                                                                                                                                                                         //frames=(--frames==0xFF)?19:frames;
                                                                                                                                                                                                                           delay(100);
                                                                                                                                                                                                                           }