#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Define Pins
#define START_BUTTON 2
#define FEED_BUTTON 3
#define PLAY_BUTTON 4
#define BUZZER_PIN 5
#define RED_LED 6
#define GREEN_LED 7
#define BLUE_LED 8

// LCD Initialization (I2C Address: 0x27)
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Pet Attributes
int health = 70;
int happiness = 50;

void setup() {
    pinMode(START_BUTTON, INPUT_PULLUP);
    pinMode(FEED_BUTTON, INPUT_PULLUP);
    pinMode(PLAY_BUTTON, INPUT_PULLUP);
    pinMode(BUZZER_PIN, OUTPUT);
    pinMode(RED_LED, OUTPUT);
    pinMode(GREEN_LED, OUTPUT);
    pinMode(BLUE_LED, OUTPUT);
    
    lcd.init();
    lcd.backlight();
    resetGame();
}

void loop() {
    if (digitalRead(START_BUTTON) == LOW) {
        startGame();
    }
    if (digitalRead(FEED_BUTTON) == LOW) {
        feedPet();
        delay(500);
    }
    if (digitalRead(PLAY_BUTTON) == LOW) {
        playWithPet();
        delay(500);
    }
    updatePetStatus();
    delay(1000);
}

void startGame() {
    health = 70;
    happiness = 50;
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Pet Game Started!");
    delay(1000);
    updatePetStatus();
}

void feedPet() {
    health = min(health + 20, 100);
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Feeding Pet...");
    delay(1000);
}

void playWithPet() {
    happiness = min(happiness + 10, 100);
    health = max(health - 5, 0);
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Playing with Pet");
    delay(1000);
}

void updatePetStatus() {
    if (health <= 30) {
        digitalWrite(RED_LED, HIGH);
        digitalWrite(GREEN_LED, LOW);
        digitalWrite(BLUE_LED, LOW);
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Pet is Sad!");
        lcd.setCursor(0, 1);
        lcd.print("Feed Me!");
        tone(BUZZER_PIN, 1000);
        delay(500);
        noTone(BUZZER_PIN);
    } else if (health > 70 && happiness > 50) {
        digitalWrite(GREEN_LED, HIGH);
        digitalWrite(RED_LED, LOW);
        digitalWrite(BLUE_LED, LOW);
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Pet is Happy!");
    } else {
        digitalWrite(BLUE_LED, HIGH);
        digitalWrite(RED_LED, LOW);
        digitalWrite(GREEN_LED, LOW);
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Pet is Okay");
    }
    lcd.setCursor(0, 1);
    lcd.print("H:"); lcd.print(health); lcd.print("% H:"); lcd.print(happiness); lcd.print("%");
}

void resetGame() {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Press Start");
}