#include <Wire.h>
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  lcd.begin(16, 2);

  // Task 1.2 (a): Display Text and Move Cursor
  lcd.setCursor(0, 0);
  lcd.print("Hello!");
  delay(2000);
  
  // Move cursor to next column
  lcd.setCursor(7, 0);
  lcd.print("I'm Uwais!");
  delay(2000);
  
  // Move cursor and print on second line
  lcd.setCursor(2, 1);
  lcd.print("Welcome ^_^");
  delay(2000);
  lcd.clear();
}

void loop() {
  // Task 1.2 (b): Creating Special Characters
  byte smiley[8] = {
    0b00000,
    0b01010,
    0b01010,
    0b00000,
    0b10001,
    0b01110,
    0b00000,
    0b00000,
  };
  lcd.createChar(0, smiley);
  lcd.setCursor(0, 0);
  lcd.write(byte(0));
  lcd.print(" Smile!");
  delay(2000);

  byte sad[8] = {
    0b00000,
    0b01010,
    0b00000,
    0b00000,
    0b01110,
    0b10001,
    0b00000,
    0b00000,
  };
  lcd.createChar(1, sad);
  lcd.setCursor(0, 1);
  lcd.write(byte(1));
  lcd.print(" Sad!");
  delay(2000);
  
  // Task 1.2 (c): Display Special Symbols
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.write(223); // Degree symbol
  lcd.print("C");
  delay(2000);

  // Task 1.2 (d): Creating Custom Characters
  byte snowflake[8] = {
    0b00100,
    0b10101,
    0b01110,
    0b11111,
    0b01110,
    0b10101,
    0b00100,
    0b00000
  };
  lcd.createChar(1, snowflake);

  // Animation: Move Snowflake Across the Screen
  for (int row = 0; row < 2; row++) {            // Loop through rows
    for (int col = 0; col < 16; col++) {         // Loop through columns
      lcd.clear();                               // Clear previous position
      lcd.setCursor(col, row);                   // Set new position
      lcd.write(byte(1));                        // Draw snowflake
      delay(200);                                // Pause to create animation effect
    }
  }
  
  for (int row = 1; row >= 0; row--) {           // Loop back through rows in reverse
    for (int col = 15; col >= 0; col--) {        // Loop through columns in reverse
      lcd.clear();                               // Clear previous position
      lcd.setCursor(col, row);                   // Set new position
      lcd.write(byte(1));                        // Draw snowflake
      delay(200);                                // Pause to create animation effect
    }
  }

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(" Snowflake");
  delay(2000);
  lcd.setCursor(0, 1);
  lcd.print(" Animation!");
  delay(2000);
  lcd.clear();
}