#include <LiquidCrystal.h>
LiquidCrystal lcd = LiquidCrystal(9,8,5,4,3,2);

int position = 0, height = 0;
bool test = true, test2 = true, test3 = true, test4 = true;

void setup() {
  Serial.begin(9600);
  pinMode(A4, INPUT);
  digitalWrite(A4, HIGH);
  pinMode(A5, INPUT);
  digitalWrite(A5, HIGH);
  pinMode(A3, INPUT);
  digitalWrite(A3, HIGH);
  pinMode(A2, INPUT);
  digitalWrite(A2, HIGH);
  lcd.begin(16,2);

  uint8_t heart[8] = {
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000,
  };
  lcd.createChar(3, heart);

  lcd.clear();
  lcd.print("\x03");
}

void loop() {
  if (digitalRead(A5) == LOW && test) {
    test = false;
    if (position < 15) {
      position++;
    Serial.print(position);
    Serial.println(height); 
    lcd.clear();
    lcd.setCursor(position, height);
    lcd.print("\x03");
    delay(10);
    }
  }
  if (digitalRead(A5) == HIGH && !test) {
    test = true;
    delay(10);
  }


  if (digitalRead(A4) == LOW && test2) {
    test2 = false;
    if (position > 0) {
      position--;
    Serial.print(position);
    Serial.println(height); 
    lcd.clear();
    lcd.setCursor(position, height);
    lcd.print("\x03");
    delay(10);
    }
  }
  if (digitalRead(A4) == HIGH && !test2) {
    test2 = true;
    delay(10);
  }


  if (digitalRead(A2) == LOW && test3) {
    test3 = false;
    if (height < 1) {
      height++;
    Serial.print(position);
    Serial.println(height); 
    lcd.clear();
    lcd.setCursor(position, height);
    lcd.print("\x03");
    delay(10);
    }
  }
  if (digitalRead(A2) == HIGH && !test3) {
    test3 = true;
    delay(10);
  }


  if (digitalRead(A3) == LOW && test4) {
    test4 = false;
    if (height > 0) {
      height--;
    Serial.print(position);
    Serial.println(height); 
    lcd.clear();
    lcd.setCursor(position, height);
    lcd.print("\x03");
    delay(10);
    }
  }
  if (digitalRead(A3) == HIGH && !test4) {
    test4 = true;
    delay(10);
  }
}