feat(pet): add animation frame

include/pet.hpp

@@ -17,10 +17,14 @@ class Pet {
     int8_t getEnergy() const;
     int8_t getCleanliness() const;
     String getReasonForDeath() const;
+
+    byte getAnimationFrame();
   private:
     int8_t hunger;
     int8_t joy;
     int8_t energy;
     int8_t cleanliness;
     String reasonForDeath;
+
+    byte lastAnimationFrame;
 };

src/display.cpp

@@ -4,7 +4,7 @@
 Display::Display() : lcd(LCD_I2C_ADDRESS, LCD_COLS, LCD_ROWS) {}
 
 void Display::begin() {
-  byte CUSTOM_CHAR_PET[] = {
+  byte CUSTOM_CHAR_PET1[] = {
     B00100,
     B01110,
     B11111,
@@ -14,10 +14,23 @@ void Display::begin() {
     B10001,
     B11111
   };
+  byte CUSTOM_CHAR_PET2[] = {
+    B00100,
+    B01110,
+    B11111,
+    B10101,
+    B11111,
+    B10001,
+    B10001,
+    B11111
+  };
 
   lcd.init();
-  lcd.backlight();
+  lcd.backlight(); 
-  lcd.createChar(0, CUSTOM_CHAR_PET); // Create a custom character for the pet
+
+  // Create a custom character for the pet
+  lcd.createChar(0, CUSTOM_CHAR_PET1);
+  lcd.createChar(1, CUSTOM_CHAR_PET2);
 }
 
 void Display::clear() {
@@ -45,7 +58,7 @@ void Display::drawPet(Pet &pet) {
   lcd.print("Cleanliness: " + String(pet.getCleanliness()));
 
   lcd.setCursor(LCD_COLS - 2, LCD_ROWS / 2 - 1); // Position the pet
-  lcd.write(byte(0)); // Draw the custom pet character
+  lcd.write(pet.getAnimationFrame()); // Draw the custom pet character
 }
 
 void Display::drawMenu(Menu &menu) {

src/pet.cpp

@@ -1,7 +1,7 @@
 #include "pet.hpp"
 
 Pet::Pet()
-    : isAlive(true), hunger(0), joy(100), energy(100), cleanliness(100), reasonForDeath("") {}
+    : isAlive(true), hunger(0), joy(100), energy(100), cleanliness(100), reasonForDeath(""), lastAnimationFrame(0) {}
 
 void Pet::updateHunger(int8_t delta) {
   hunger += delta;
@@ -82,3 +82,9 @@ int8_t Pet::getCleanliness() const {
 String Pet::getReasonForDeath() const {
   return reasonForDeath;
 }
+
+byte Pet::getAnimationFrame() {
+  // Alternate between two frames for a simple animation effect
+  lastAnimationFrame = (lastAnimationFrame + 1) % 2;
+  return lastAnimationFrame;
+}