import sqlite3

def init_db():
    conn = sqlite3.connect('game.db')
    cursor = conn.cursor()
    cursor.execute('''
        CREATE TABLE IF NOT EXISTS players (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            username TEXT UNIQUE,
            location TEXT,
            inventory TEXT
        )
    ''')
    cursor.execute('''
        CREATE TABLE IF NOT EXISTS game_world (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            location TEXT UNIQUE,
            description TEXT,
            items TEXT
        )
    ''')
    cursor.execute('''
        CREATE TABLE IF NOT EXISTS interactions (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            player_id INTEGER,
            action TEXT,
            result TEXT,
            timestamp DATETIME DEFAULT CURRENT_TIMESTAMP
        )
    ''')
    conn.commit()
    conn.close()

init_db()